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    PerformanceC O M P O N E NTS AN D S Y S TE M S F O R TH E E NG IN E AN D ITS P E R I P H E R Y 1 /2 0

  • 8/12/2019 news letter from Mahle

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    Dear readers,

    W e are pleased to present the new M AH LE

    Performancea platform for wo rldw idedialog w ith our cu stom ers. D riven by p er-

    form anc efollow ing this slogan , we w ill

    report on all asp ects m otivating ourselves

    and the sector and reveal the exp ertise

    beh ind M AH LE . This w ill provide you w ith

    inform ation o n a b road spec trum of sub-

    jects such as: innovations, R esearch &

    D evelopm ent or trend s in the m arket. W e

    report from both the M AH LE G roup a s w ell

    as from ind ividu al bu siness un its. W e p ro-

    vide insight into o ur current p roduct po rt-

    folio, discuss produ cts in specialist contri-

    butions and offer inform ation on new pro-

    duc tion p rocesse s and techn ologies. W e

    also sho w you e xtend ed a pp lication p os-

    sibilities for our products and present pio-

    nee ring solution s to prob lem s, giving you

    a direct cutting ed ge in an increasingly

    com petitive globa l m arket.

    At the sam e tim e, proxim ityis especially

    im portant to u s. As a glob al player am ong

    the 30 largest autom otive supp liers, w e

    are d irectly on site w ith 80 loc ation s

    w orldw ide and w ith Re search and D evel-

    op m ent cen ters in all key regions o f the

    autom otive ind ustry. W e deve lop an d

    m anufacture a w ide variety of com po nents

    and m odules. That m akes us one of the

    lead ing spe cialists w ith continuo usly grow -

    ing system com petence in the field o f

    eng ine an d p ow ertrain technology. O ur

    sales organization, m anag ed a s a g lob al

    key ac count organization, ensures direct

    contact to o ur custom ers w orldw ide.

    O ur driving force is close integration w ith

    the deve lopm ent processes o f our custom -

    ers. O ne of ou r strengths is our ab ility to

    w ork very closely together with you in

    com plex p rojects and to d o so interna-

    tionally. O ur Rese arch and D evelopm ent

    cen ters en able us to ha ve a flexible p res-

    ence w ith correspo nding c apac ities e ve-

    rywh ere, w hether in Europe , Asia, North

    Am erica or South Am erica. W e alw ays set

    new standa rds as a tech nolog ical lead er,

    m easuring o ur perform ance aga inst the

    very best. O ur continuously grow ing corecom petence for the com bustion eng ine

    com plete system allow s us to integrate

    directly through develop m ent tools in the

    internal proce sses of our custom ers, and

    henc e spur on developm ents with greater

    efficienc y, process safety and cost optim i-

    zation thanks to synergy effects. In this

    w ay, for exam ple, w e seek a co ntinuo us

    dialog w ith our custom ers over the entire

    project m anag em ent period w ith inter-

    disciplinary team s from D evelopm ent, Pro-

    duction, Q uality Assurance a nd P urchasing.

    O ur aim is to synch ronize all processes

    op tim ally for the very best perform anc e.

    Integrated solution s suc h as com plete

    po w er cell un its typically offer synergy

    effects and eno rm ou s po tential. Eve n

    du ring the d evelopm ent phase, the indivi-

    dua l com pon ents can be optim ally coo rdi-

    nated w ith each other by m eans of sim u-

    lation . Expenditure is redu ced, less test

    runs are necessary and the

    tim e can thus be sh ortened

    tow ards com plete m odu le

    several com po nen ts w hile inte

    tion al function s is set to con

    area of air m ana gem ent

    m anagem ent system s, w e

    new conce ptual insights an

    solutions. A nd w ith c ylinde r

    les, w e offer com plete exp

    basic developm ent to prod uct

    other supplier. The integratio

    Po w ertrain has en abled us to

    engineering and system com

    further.

    In the future as w ell, w e

    enh anc e o ur internationa lly

    research, developm ent and

    exp ertise at the focal po ints

    m otive ind ustry and in the w o

    m arkets.

    W herever you w ork together

    in the w orld: O ur aim is to

    our outstand ing perform ance

    aptly named M AH LE Performhelp achieve this very goal. W

    an interesting and enjoyab le

    Your

    Pe

    Dr. Bernd Mahr, Member of the Corporate

    Manageme nt Committee, Sales, Research and

    Advanced Engineering

    C O N T E N T

    THE COMPANY

    C orporate o rgan ization for m ore perform ance w orldw ide

    ENGINEERING SERVICES

    Ad vanced engineering and system com petence: M AH LE P ow ertrain

    MOTORSPORTS

    Form ula 1: Rac ing b y new rules:

    The cha lleng e for engine develop ers, drivers and team s

    PISTONSYSTEMS

    The ECOFORM piston: con tinuous develop m ent for greater

    perform ance an d less w eight

    CYLINDER COMPONENTS

    PVD coated p iston p in for highest fatigue resistance

    VALVE TRAINSYSTEMS

    C ylinder heads: a new M AH LE achievem ent

    AIR MANAGEMENT SYSTEMS

    Integration saves installation spa ce and costs: crankcase ventilation

    w ith oil m ist sep arator

    LIQUID MANAGEMENT SYSTEMS

    N ew two -stage d iesel fuel filter with integrated w ater separation

    MAHLE POWERTRAIN

    D ow nsizing reduc es fuel con sum ption

    INTERVIEW

    N ew regional Headq uarters in S hanghai: M AH LE Performance

    spok e to D r. U w e M ohr, D irector R esearch and A dvanc ed E ngineering

    of MA H LE International G m bH

    4

    6

    8

    10

    12

    14

    16

    18

    20

    22

    2 Per for mance

    VISIT US:

    3. 6. April SAE W orld Congress Society of Autom otive

    En gineers International (D etroit, U SA )

    27. 28. April 27. Engine Symp osium W ien (Vienna, Austria)

    9. 11. M ay European Autom otive Components Expo 2006/Engine Expo

    (Stuttgart, G erm any)

    26. 30. August M IM S Autosalon (M oscow, Russia)

    21. 28. Septem ber IAA H eavy Duty Vehicles (H anover, G erm any)

    9. 11. O ctober Aachener Colloquium Engine and Vehicle Technique

    (Aachen, Germ any)

    18. 27. N ovem ber Au to C hina International Autom otive Indu stry Exhibition

    (Beijing , Ch ina)

    MASTHEAD

    PublisherM AH LE InternationalG m bHPragstrae 2646D-70 376 Stuttgartww w.mah le.com

    Responsible for the contentDr. Bernd M ahr

    Contactsales@m ahle.comPhone + 49 (0) 7 11-5 01-1 46 12Fax +49 (0) 7 11-5 01-4 41 4 6 12

    Picture creditsM AHLE Archiv

    Concept and designLorenz & Com pany W erbeagentur Gm bH

    R ep rint, eve n pa rtially,only in acc ordance w ith and afterautho rization throu gh the e ditor. M A H L E G m b H , 2 0 06

    00007432 DE EN

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    C O R P O R A TE O R G A N IZ AT IO N

    FOR MORE P ERFORMANC EW O R L D W ID E

    Pe

    T H E

    4 Per for mance

    As a global, pioneering leader in tech-

    nology, MAHLE has aligned its corpo-

    rate organization to the growing re-

    quirements of international markets.

    With these structures, we can offer

    our customers working on global plat-

    forms and projects across continents

    more performance, more benefits,more synergies and more service for

    integrated systems solutions.

    Autom ob ile m anu facturers are placing in-

    creasing em pha sis o n c oop eration for the

    joint use o f platform s and eng ines. So-

    called w orld engines are often produ ced

    in d ifferent reg ion s an d cou ntries. At the

    sam e tim e, the n um ber of interfaces and

    sup pliers is decreasing w hile sub -process-

    es and produc ts are being o utsourced

    through increasing use o f m odu les and

    system s. This develop m ent calls for glo-

    ba lly active supp liers w ith a presence in

    all regions, com bined w ith extensive tech-

    nical and financial potential.

    Global reach plus proximity to the

    customer

    Ag ainst this bac kgroun d, we h ave re-

    aligned our corporate organ ization to be

    bo th glob ally effective and yet custom er-

    oriented w ith a ke y account structure in

    the sales divisions and a un iform presen ce

    in the m arket. Follow ing the one face tothe custom erprinciple, key acco unt

    m anag ers represent all products and ser-

    vices across the e ntire produ ct spec trum

    on site at our custom ers. To ac hieve this,

    they w ork close ly w ith the relevan t Produc t

    Lines in all projects. Th e region ally-ba sed

    sales team s of the various key acc ount

    m anag ers guarantee con tinuo us and rapid

    ava ilab ility on site w ith their technical spe -

    cialists. This yields be nefits suc h as the

    redu ction of interfaces, sign ificantly sim pli-

    fied com m unication and po sitive e ffects, in

    pa rticular for large projects realized across

    Produ ct Lines or cou ntries. Thank s to o ur

    global sales o rganization, we are in a per-

    fect position to fulfill the future req uire-

    m ents of the g lob al m arket. Th e integrat-

    ed sales a ctivities play a significa nt role in

    increasing efficienc y and h enc e ensuring

    faster resp on se tim es.

    The five g lob ally orga nized Prod uct Lines

    P iston System s, C ylinde r C om pon ents,

    Valve Train S ystem s, Air M anage m ent

    System s and Liquid M anagem ent System s

    are close ly integrated w ith one ano ther

    via c entrally organ ized R esearch a nd Ad -

    vanced D evelop m ent, sales and p rocure-

    m ent divisions. The five p roduc t lines coverthe original equipm ent for the autom otive

    ind ustry toge ther w ith the en gineering

    service p rovider M AH LE Po w ertrain, w hich

    w as integrated in 2 005 .

    As autono m ously ope rating p rofit cen ters,

    organ izational structures po sitioned be side

    these serve the Afterm arket, M otorsports

    as w ell as Sm all Eng ine C om pon ents,

    Large Eng ine C om pon ents and Industrial

    Filtration m arket segm ents w ith a spe-

    cial custom er structure.

    Valve Train Systems

    C om plete valve train system s as w ell as

    their com pon ents: cast and com posite

    cam shafts, rocker arm s, cam follow ers,

    rocker arm s hafts and lever m od ules,

    valves, flat and roller tapp ets, valve sea t

    inserts and g uide s, m ach ined cylind er

    head s and en gine blocks as w ell as m ount-

    ed c ylinder head s and eng ines, precision

    sintered p arts, turbo cha rger pa rts.

    Air Management Systems

    C om plete air m anag em ent system s, air fil-

    ters, crankc ase ventilation system s (w ith

    oil m ist sepa ration and pressure regu la-

    tion), cylinder head and eng ine c overs,

    cabin air filters, actuators, blow -by h eating

    system s.

    Liquid Management Systems

    O il filter m od ules, oil and fuel screw -on

    filters, fue l filter m od ules, fue l pressure

    regulators, inline fuel filters, activated car-

    bo n filter m od ules, hea t exchan gers for

    eng ines and transm issions, hydraulic o il

    filters, air dryers.

    R&D

    Sales

    Procurement

    Product Lines

    Piston Systems

    Cylinder Components

    Valve Train Systems

    Air Management Systems

    Liquid Management Systems

    Aftermarket

    Small Engine Components

    Large Engine Components

    Motorsports

    Industrial Filtration

    MAHLE Powertrain: increasing

    engineering and systems competence

    W e have streng thened o ur eng inee ring

    and system s com petence w ith the acqui-

    sition of the C osw orth Tech nology G roup

    on January 1, 2005, now M AH LE Pow er-

    train. Th is strategic expansion allow s us to

    offer our custom ers an even greater spec-

    trum of services from developm ent ser-

    vices throug h to integrated pow ertrain an d

    engine equipm ent.

    Read more about M AHLE Powertrain on

    pages 6 and 7.

    PRODUCT LINES

    Piston Systems

    Alum inum pistons for gaso line and diesel

    eng ines, articulated and steel pistons for

    com m ercial vehicles, piston asse m blies

    and m odules.

    Cylinder C omponents

    Piston rings, piston p ins, con nec ting rods,

    cylind er liners, bearings a nd bu shings for

    com bustion en gines and other autom otiveap plication s, piston inserts.

    Profit Centers

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    Pe

    E N G IN E E R IN G

    6 Per for mance

    E N G IN E E R IN G S E R V IC E S

    MAHLE plus Cosworth Technology

    equals MAHLE Powertrain. An equa-

    tion with tangible results for our

    customers. At the beginning of 2005,

    MAHLE acquired the Cosworth Tech-

    nology Group with its expertise gained

    since 1958 in the area of development

    and production for road-going high-

    performance engines. (Not to be con-fused with Cosworth Racing, now

    Cosworth Ltd., the manufacturer of

    Formula 1 engines). Successful inte-

    gration in the MAHLE Group and re-

    naming to MAHLE Powertrain on July

    1, 2005 has enabled us to substantial-

    ly extend our international engineering

    and systems competence.

    Power for the future

    As a system s pa rtner, w e aim to fully uti-

    lize future p otentials bo th ec onom ically

    and techno log ically for our custom ers and

    m ake e ngines e ven m ore efficient: op ti-

    m ized for m ore pow er, long er service

    lives, reduc ed fuel consum ption and low er

    em issions. W ith M AH LE Pow ertrain, we

    offer exp ertise and exp erienc e, w hich

    exten d far beyo nd their origin in the field

    of developing high-perform ance engines.

    The com petence of M AH LE P ow ertrain

    covers a broad spectrum from engineering

    services o r integrated prototype h ardw are

    and so ftw are for the entire pow ertrain

    through to the developm ent of com plete

    eng ines and their production. O ur glob alM AH LE sales and developm ent netw ork

    allow s us to u tilize w orldw ide synergies for

    inno vative so lutions. M AH LE Po w ertrain

    has four locations for the d evelopm ent,

    production a nd assem bly of engines: The

    tw o developm ent centers in N ortham pton

    (U K) and N ovi near Detroit (M I/US A) are

    integrated in joint projects in the M AH LE

    research an d d evelopm ent activities, and

    w ork together w ith the o ther five d evelop-

    m ent centers of the M AH LE G roup. The

    two p roduc tion locations in W orcester (U K)

    and W ellingb orough (U K) are respon siblefor the casting, prod uction a nd m ach ining

    of cylinde r heads and engine blocks as

    w ell as engine a ssem bly for sm all lots. The

    first Au di R S4 and R S6 engines as w ell as

    the Aston M artin V 12 eng ines, for instance,

    all had their origin here and the A ud i/VW

    V6 2.4 and 2.8 liter engines also c om e o ff

    the p roduction line at this site.

    Design, Research and Development

    Today M AH LE Po w ertrain w ork is involved,

    am ong st other things, w ith e xhaust em is-

    sions a nd drivability of eng ines, fuel savingcon cep ts, diagno stics as w ell as the

    redu ction of developm ent tim es from the

    conc ept and p rodu ction through to dea ler

    supp ort. This allow s M AH LE Po w ertrain to

    offer a w ide range of services from

    sho rt-term prototype p rojects through to

    com plete engine program s w ith self-de-

    velop ed eng ine c onc epts including the

    prod uction an d develop m ent of electronic

    diagno stics. The e xpe rienc e ga ined in the

    area of com bustion engines extends from

    one-cylind er to V1 2 a nd all variants in be-

    tw een. Com puter-aided developm ent and

    ana lysis processes enable rapid and cost-

    effective designs, w hich ca n be verified

    later in relation to com po nents or in the

    entire eng ine w ith va riou s test facilities.

    For this purpose, M AH LE P ow ertrain has

    18 fired eng ine test bench es an d four

    vehicle cha ssis dynam om eters. In ad dition

    to pow er and torque be havior, the entire

    em ission sp ectrum can also be recorded

    and certified . This is of particular b enefit

    to our custom ers in rega rd to stricter

    exhau st gas regulations due to b e im ple-

    m ented in the future.

    Production and assembly through to

    the complete engine

    Besides com ponents, M AH LE P ow ertrain

    also produ ces its ow n co m plete engines.

    This includes casting and m ach ining cylin-

    der crankcases and cylinde r heads w ith

    series prod uction o f up to 120 ,00 0 un its

    each year. At the sa m e tim e, our exten-

    sive eng inee ring expe rienc e ensures that

    each solution w e de velop is also optim ized

    for prod uction in its d esign. M oreove r, we

    also o ffer our custom ers the c om plete

    assem bly of eng ines tested and deliv-

    ered read y to install. Th anks to its broad

    range o f services and the effective co m -bination of developm ent and produc tion

    expe rtise, M AH LE P ow ertrain has been

    involved in o ver 30 significan t program s

    for new engine con cepts over the p ast few

    years in the autom otive, m arine, aviation,

    m otor racing an d industrial sectors. W e

    invest continuously in research p rogram s

    in o rder to secure our lead ing po sition in

    autom ob ile techn ology. M AH L

    is currently sup po rting bo th

    jects as w ell as p rojects at

    versities in England .

    MAHLE Powertrain Integ

    powertrain technology:

    D evelopm ent, production a

    of high-perform ance eng ine

    From individua l com pon en

    system s throug h to com ple

    assem blies for prototypes

    production

    C om plete engine programcon cep t draft throu gh to p

    D em on stration en gines an

    po w ertrain installation s

    Fe asibility stud ies

    Product developm ents

    Sub -system design p rogram

    Value en gineering

    Ben chm arking of com petin

    Electron ic engine co ntrols

    diagno stics

    You can read more about MA

    train in the article Downsiz

    fuel consumption on pages

    The origin of MAHLE PoweThe fine-sound ing n am e C osw

    self and closely ass ociated

    Found ed in 1958 by the two E

    C ostin and K eith Duckw orth,

    ed rapidly in the sixties an d se

    cess ful inno vative program s and m otorsport engines. The f

    eng ine (Do uble Fou r Valves) h

    15 5 G rand P rix victories b y

    dom inate Form ula 1 for decad

    m ade a na m e for itself with

    gines for series prod uc tion v eh

    engines for Me rcedes-Benz a

    oped and p roduced by C oswo

    A D V A N C E D E N G IN E E R IN G A N D S Y S TE M C O M P E TE N C E

    MAHLE P OWER TRAIN

    Keith Duckworth , Graham Hill (behind the wheel),

    Mike Cost in and Colin Chapman 1967 together with

    the Lotus 49 and Cosworth Ford engine

    The combinat ion Jim Clark/Lotus 49 with the DFV

    engine changed th e face of Formula 1 racing in

    1967

    Final assembly at MAHLE Powertrain

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    M O TO R S P O R TS M O T

    The Formula 1 season 2006 is set t o

    s ta r t w i t h new r u les . Thei r a im is to

    lower costs, increase safety, reduce

    c i r cu i t t imes and boos t exc i t emen t .

    The mos t impo r t an t change a f f ec t s the

    dr ive units of t he racing cars. The FIA

    has consequen t l y spec i f i ed the use o f

    V8 engines with 2.4 l i ter displacement

    an eno rmous cha l lenge fo r t he teamsand eng ine manu fac tu r e r s invo lved .

    In other words, everyone has to star t

    aga in f r om scr a t ch . And tha t means

    a po ten t ia l sh i f t in the r e la t i ve

    s t r eng ths o f t he Fo rmu la 1 teams. The

    season star t in Bahrain looks set to

    herald an excit ing Grand Pr ix 2006.

    Power limits: The new V8 rule is a real

    challenge

    Ac cording to the new regulations , the

    new ly d evelop ed 2.4 liter V8 engines have

    a po w er of around only 740 H P instead

    of 900 at a speed of m ore than 19,000

    rpm . In co m parison to the previous drive

    units that rep resents a po w er loss of

    around 2 0 p ercent. At the sam e tim e, the

    eng ine m ust reliably cop e w ith tw o racing

    w eeken ds an d h ence a service life of up

    to 1,500 km . In 20 08, this requirem ent w ill

    even be three racing w eeken ds and around

    2,200 km . An e norm ous challenge for

    developm ent and production at M AH LE

    M otorsports.

    MAHLE Motorsports Formula for

    success

    M AH LE b ecam e involved in m otorsport

    as early as the 1 93 0's a truly w inning

    com bination: In 20 04, for exam ple 16 out

    of a total 18 G rand Prix races w ere w onw ith M AH LE m otorsport com ponents. In

    2005 M AH LE sup plied six of the ten team s

    yet aga in both the driver's cha m pionship

    and d esign eng ineer cham pionsh ip w ere

    w on w ith M AH LE m otorsport com ponents.

    An d in 2 006 , six of the eleven team s

    op ted for the p erform anc e a nd reliability

    of our com po nents: B M W Sa ube r, Ferrari,

    M idland F1 R acing, Red Bu ll Ra cing,

    R enau lt and Toyota.

    M AH LE M otorsports has set about tackling

    the rule ch ang es at any early stage, coo rdi-

    nating develop m ents intensively w ith its

    custom ers do w n to every detail. All core

    processes for m otorsport are b rought to-

    gether at our m otorsport plant in Fellbach.

    Around 190 engineers, designers and pro-

    du ction or qu ality specialists w ork he re in

    close coo peration und er one roof w ith

    one com m on o bjective: greater perform -

    ance. The m otorspo rt com po nents provid-

    ed m ust alw ays be d esigned to reduce

    friction and w eight w hile retaining the

    required d urab ility. The end effect: to further

    enha nce the engine pow er. The exp erts at

    M AH LE a re in con tinuo us con tact with our

    custom ers, enab ling them to respond

    rapidly and flexibly to the d em and ing re-

    quirem ents. In this w ay, for exam ple, the

    piston m ass could be reduced by 5% onaverage from 20 04 u ntil 20 05 d esp ite

    increasing sp eeds and a d oub led runn ing

    tim e. M AH LE is one of the d riving forces for

    outstand ing m otorsport success a relia-

    ble and com petent partner in pole position.

    Bad Vibrations

    In a Form ula 1 engine around 9 00 m oving

    parts m ust tolerate an d survive sp eeds of

    m ore than 1 9,000 rpm . M ore vibrations

    occu r in the new V8 eng ine g eneration than

    in a V 10 eng ine d ue to physical factors: The

    other ignition seq uen ces a nd ignition gaps

    lead to co m pletely altered vibration and

    less b alanc ed m om ents of inertia. This

    results in co nsiderably higher m ech anical

    loads for the o verall system , w hich has a n

    effect on the reliab ility and service life of the

    drive units and the m ain co m po nents, such

    as the pistons. O w ing to the low er speed

    range w hich can be utilized and low er torques

    of the V 8 en gine w ith a defined intake p ipe

    length, a highe r full-load sha re results in

    contrast to the V 10 eng ine in relation to a

    com plete racing d istance o f around 1 0% .

    This en tails high er piston tem peratures,

    w hich in turn requires an op tim ization of the

    piston cooling or the use of hea t-resistant

    alloys.

    A further o bjective is to redu ce eng ine vi-bration s to a tolerable leve l. Ea ch individu al

    engine com ponent is com puted and ana-

    lyzed in the sim ulation , while its behavior is

    asc ertained w ithin the overall interplay. A

    new spe cification o nly gets the go-ahead

    for racing after extensive end urance runs

    on dyn am om eters involving thousand s of

    kilom eters. This is bec ause the ne w V8 en-

    gines have to exhibit the sam e stability as

    their tried-and-tested prede cessors righ t

    from the beginning, thus setting the highest

    dem and s for the q uality of all com po nen ts.

    No variable intake, exhaust and valve

    controls allowed

    A further crucial cha nge in the ne w set of

    rules is the proh ibition of variab le air intake

    system s w hich w ere previously used for

    optim izing the torque and po w er. A m ore

    narrow speed range is now available ow ing

    to the fixed pa ssage lengths. Th erefore, this

    calls for a com prom ise betwe en m axim um

    po w er and go od drivab ility. B esides the

    variab le a ir intake system s, variab le

    exhaust system s as w ell as valve controls

    are prohibited. In the sam e w ay, a long list

    of exotic m aterials have been ruled out

    the regulation s stipu late co nve ntion al tita-

    nium and alum inum alloys for connec ting

    rods, valves an d p istons.

    O ne thing is clear: Th e co nce

    from V1 0 to V8 entails eno rm

    fort and exp ense, not only in t

    also the entire veh icle.

    H ow ever, the objective in m ot

    struction rem ains the deve lo

    perfectly co ordinated com ple

    W ith high p erform ance and rel

    FOR MULA 1: R AC ING B Y NEW RU LEST H E C H A LLE N G E FO R E N G IN E D E V ELO P E R S , D R IV E R S A N D T E A M S

    The most important rules for engines from

    2006

    From the 200 6 season onw ards, only V8 e ngines

    w ith m axim um 2.4 liters displacem ent are perm it-

    ted as w ell as older V1 0 d rive un its with a sp eed

    lim itation still to be de fine d b y the F IA for a tran s-

    itiona l pe riod . Turbines , diese l, W ank el engines o r

    sup ercharging are not perm itted . Also proh ibited

    are variab le exh aus t pipe leng ths, oval piston s and

    energy acc um ulators wh ich sup port the en gine in

    its op eration.

    In the 2006 sea son, an engine m ust withstand two

    entire racing w eeken ds. Re pair w ork on add itional

    units of the en gine such a s the oil pu m p is allow ed .

    An engine chang e is penalized b y m oving the d river

    ba ck ten p lace s in the s tart line-u p.

    Considerable changes expected for engine

    manufacturers from 2008 and 2009O n Dece m ber 21, 2005 the FIA annou nced the pro-

    spective rules w hich are to app ly from 200 8 on -

    w ards in relation to co st redu ction a nd g ene ral

    stand ardization. T here is a provision al neg otiation

    basis between the FIA and the autom obile m anu-

    facturers.

    From 200 8 on w ards, the

    w ithstand three instead o f

    for the transm ission, this n

    Each team m ay only use tw

    chassis) at the racing w eek

    Th e s pe ed lim it is to be p

    to 19,000 rpm , w hereby a

    rpm is no t ruled ou t.

    A 5.75% com pon ent of th

    of a biologically prod uce d

    hybrid e ngines are to be p

    The m inim um w eight wi

    605 to 550 kg.

    O nly m aterials authorized

    used in ch assis and engine

    A m ajor change to the C onc

    vide s for cha ssis and en gi

    from one team to the next

    it easier for new team s to

    R evo lution ary tech no log ies dual team a com petitive ad

    and force the other team s

    cos t intensively are to b e

    of the first seaso n.

    8 Per for mance Pe

  • 8/12/2019 news letter from Mahle

    6/12

    As a leading manufacturer of light-

    weight pistons for gasoline engines,

    MAHLE has constantly redefined thelimits of performance through continu-

    ous development and innovative con-

    cepts. With the rising price of fuel

    making efficient engines ever more

    attractive, MAHLE can now offer its

    customers an even more economical

    solution for engines thanks to its pat-

    ented ECOFORM piston. This makes

    the ECOFORM piston superior to con-

    ventional pistons in terms of mass and

    performance. When combined with

    other refined engine components, the

    reciprocating masses of the engine are

    reduced.

    Continuous development in production

    C ontinuo us de velopm ent and o ptim ization

    is the ke y to techn ical advancem ent for anyproduct and com pany. M AH LE is renow ned

    throughout the w orld for setting the p ace o f

    inno vative piston d evelopm ent. O ne of the

    latest developm ents in reduc ing the m ass

    in its pistons for ligh tweight ga soline en-

    gines, the EC O FO RM piston, has already

    been launched on the m arket.

    The ECO FORM piston is sim ilar to con-

    ven tion al alum inum alloy pistons. B oth

    have the sam e m aterial w hile the casting

    m olds are also sim ilar. H ow ever, im prove-

    m ents in the casting p rocess a nd m old

    design have ena bled a significan t reduction

    in the m ass by up to 20% w ith the EC O -

    FORM piston.

    The difference s in the m old design affect

    the d em olding process. In co nventiona l

    pistons, the s ide co re is released by

    straight pulling of the core aw ay from the

    cast piston (see figu re 1). Th is casting pro-

    cess prevents ring belt undercuts in the

    direction of the p in an d restricts the design

    of the skirt area. Th e box w alls are parallelor sym m etrical to the p iston ce nter axis

    (see figu re 2).

    In the ECO FO RM process, the w indo w

    insert rotates o n a pin as the p in c ore is

    pu lled straigh t ou t of the m old (see figu re

    3). Th is en ables u ndercuts of the piston

    ring grooves. This ne w casting m ethod

    offers design en gineers new op po rtunities

    for w eight reduction . A large p ocket in the

    balcon y in the direction of the bo lt reduce s

    the m ass o f the p iston, w hile the sha pe

    can be ch anged to m eet the design and

    perform ance requ irem ents of the cu stom er.

    Instead of the ed ge o f the w indo w being

    pa rallel to the centerline as in con ven tion al

    piston s, it is obliqu e an d rou nd in sh ape

    w ith the EC O FO RM piston. The d istance

    from the ce nter of the piston is large r at the

    bo ttom of the skirt than at the top; this

    gives the skirt a be ll-like shap e. The com bi-

    nation of chang e in the window shap e and

    inclination of the w indow w all provide a

    redu ction of abou t 19% in the su rface area

    of the skirt.

    The inner core needs to b e cha nged in or-

    der to m atch the w indo w incline. The inner

    shape d esign can b e adap ted w ith repo -

    sitioned w indow w alls, w hich reduces the

    w eight of the p iston. By m aintaining a co n-

    stant w all thickn ess, the inne r core follow s

    the curvature of the rounded w ind ow . This

    ad ds stiffness to the skirt. Th e use o f a sin-

    gle piece inner core can then be a n op tion.

    A draft is no t need ed since over ha lf of the

    surface area that w ould ne ed to be d rafted

    in co nve ntional pistons is already ang led .

    As described above, the EC O FO RM piston

    and con ven tion al pistons a re visually differ-

    ent (see figure 4). The w eight of the E C O -

    FORM piston is low er and is disting uished

    by im proved d urab ility.

    Continuous development in piston

    performance

    W ith the reduction of m ass an d running

    surface in the sk irt area, the EC O FO RM

    piston has enabled a red uction in friction

    and hence an im provem ent in the running

    condition. The results reco rded in the graph

    below (see figu re 5) indicate the suc cess of

    THE EC OFORM P IS TONC O N T IN U O U S D E V ELO P M E N T

    F O R G R E A TE R P E R FO R M A N C E A N D L E S S W E IG H T

    10 Per f or m an ce Per f

    P IS T O NP IS T O N S Y S TE M S

    Figure 3:

    Swivel window mold cast ing tool

    Figure 4:

    Conventional pisto n (left) versus

    ECOFORM piston (right)

    Figure 2:

    Side view of a conventional piston

    Figure 1:

    Conventional mold

    the ECO FORM piston a long w ith weight-

    op tim ized ring s and con nec ting rod s (test

    num bers 2 and 3) in com parison to con-

    ven tion al pistons (test num be r 1). Prelim i-

    nary testing on a piston w ith 25% less sk irt

    surface area show ed that it even im proved

    the hyd rodyn am ic prope rties of the E C O -

    FORM piston, w ith a sign ificant reduction

    in the m idd le and upp er engine sp eed

    range (test num ber 4). These results revea l

    that M AH LE is on the right cou rse w ith

    developm ent of the EC O FO RM piston.

    A p iston op tim ized in this w ay form s a very

    com pact lightw eight assem bly in co m bina-

    tion w ith a stepped co nnecting rod using

    M AH LE's new 36M nVS 4 forged steel and

    a p iston pin w ith conical end s. Initial deve l-

    op m ent resu lts ind icate that the oscillating

    m asses of the piston/ring/bolt/conn ecting

    rod unit could b e reduced b y 17 to 18%

    w ithout dec reasing the streng th of the

    individua l com pon ents.

    The ECOFO RM piston is a trem end ous step

    tow ards m ore efficient gasoline e ngines

    w ith low er fuel consu m ption. Thanks to tar-geted and continuous d evelopm ent, M AH LE

    rem ains the d riving force for greater perform -

    ance w ith innovative d esigns and conc epts

    as the w orld's lead ing piston m anu facturer.

    Figure 5:

    Performance scuffing resistance

  • 8/12/2019 news letter from Mahle

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    C Y L IN D E R C O M

    MAHLE has always been enhancing

    innovative developments which are

    more powerful than anything yet exist-

    ing through research and development.

    By thinking in systems and interrela-

    tions and the optimized coordination of

    all components, further performance

    reserves can be mobilized. The piston

    pin may be a small component but it

    plays an important role for the perform-

    ance of an engine. MAHLE piston pins

    excel through utmost quality, precision

    and application variety. The product

    portfolio comprises diameters from 6

    to 250 mm. For the application in pas-

    senger car engines, piston pins are form-

    ed by MAHLE with the latest multiple-

    stage molding presses thus achieving

    innovative and complex molds for high-

    er stress-resistance. The increasing

    ignition pressures require a permanent

    optimization of the piston pins stress

    resistance. For highly stressed en-

    gines, MAHLE has therefore developed

    piston pins of case-hardened steels or

    nitrided steels with PVD coating.

    PVD Coated Piston Pin

    Piston p ins m ust have a high fatigue resis-

    tance as w ell as w ear and seizure resis-

    tance d uring c ontact w ith the p iston an d

    conn ecting rod. C ase-hardened steels and ,

    in a sim ilar w ay, nitride d steels revea l opti-

    m um prop erties for achieving these re-

    qu irem ents. Nevertheless, bushings in the

    bo res are often nec essary in o rder to

    attain acceptab le tribo log ical cond ition s.

    For bo th w eight and cost reduction, en-

    gine m anufacturers pu rsue the aim of

    sup erseding bushings. The resulting stress

    con ditions and con tact partners often

    m ake the use o f a coa ted p iston p in ne-

    cessary. Furtherm ore, a po sitive influen ce

    on the friction perform anc e is exp ected.

    In racing ap plications, coating s ba sed on

    PV D (plasm a vap or depo sition, physical

    gas pha se sep aration process, high-vacu-

    um vap orization p rocess), w hich are often

    based o n D iam ondLikeC arbon (D LC ), have

    prove n the ir m erit. Tests a re cu rren tly

    being carried out for the se ries production

    cap ab ility of PVD -coated piston pins.

    C oating tem peratures abo ve 200 C seem

    to be critical for co ating case -hardened

    steel, as high tem pe ratures lead to a

    redu ction of surface hardness and core

    strength. In such con dition s, nitride d steel

    can be used b ecause increased tem pera-

    tures w ill not reduce the co re streng th and

    surface ha rdness.

    M AH LEs experience m eans value enha nce-

    m ent for custom er produ cts.

    Exp erience w ith PV D coa tings for various

    products.

    Exp erience w ith P VD coatings for case-

    hardend and nitrided steels.

    Experienc e w ith PVD coa tings for piston

    pins of Form ula 1 as w ell as high-per-

    form anc e application s.

    M ono layer coatings such as C rN, D LC ,

    W C/C, TiN.

    M ultilayer coatings such as a com bina-

    tion of CrN and DL C .

    C Y L IN D E R C O M P O N E N T S

    Per f12 Per for mance

    P VD C OATED P IS TON P INFO R H IG H EST FATIG U E RES ISTAN C E

    Testings which leave nothi

    For highly stressed com pon ent

    m aterial testing and qu ality c

    increased c om pon ent safety

    of engine dam ages. Therefore

    and w ill further inves t m u

    ods in this sector. The m ost sure that the com pon ents ar

    in p ractical test run s. The high

    of the au tom otive ind ustry are

    Performance scuffing resistance

    A P VD -coated piston p in inc

    resistanc e, cuffing resistanc e

    sistance and dry-running pro

    redu cing friction .

  • 8/12/2019 news letter from Mahle

    8/12

    14 Per f or m an ce Per f

    It is the cylinder head that makes the

    engine intelligent. Although there is

    nothing exclusive about this state-

    ment, the complexity of the assembly

    is beyond doubt a complexity which

    has increased in recent years due to

    extensive measures aimed at greater

    flexibility in sub-systems for carbure-

    tion and charge exchange for instance.

    The performance characteristics of a

    combustion engine, its fuel consump-

    tion and raw emissions are determined

    by charge exchange, carburetion and

    combustion performance parameters

    and, more so than ever, by the cylinder

    head and its adjoining components. Atthe same time, the cylinder head com-

    plete system plays a crucial role in

    determining the manufacturing costs

    of the complete engine, as this essen-

    tially defines the engine concept.

    Cost-effective series solutions in the

    sense of an intelligent simplicity

    require a uniform and simultaneous

    development for this, owing to the di-

    verse and reciprocal dependencies

    between the individual systems in re-

    lation to the combustion process.

    In response to this, M AH LE p ursues a

    m od ular approac h in con junc tion w ith

    cylind er hea d refinem ent, and is ab le to

    develop and produce cylinder head m od-

    ules itself. The p roven c om petence o f its

    subsidiary M AH LE Po w ertrain in the d evel-

    opm ent of high-perform ance engines

    form s the basis beh ind the system s ex-

    pertise of M AH LE. This know -how co m -

    plem ents the Va lve Train S ystem s Produ ct

    Line o f the p arent G roup in a unique w ay.

    It is especially im po rtant in this co ntext

    that M AH LE Po w ertrain a lso o ffers its o w n

    produc tion fac ilities (prec ision ca sting ,

    m achining, assem bly and production) for

    prototypes and larger series in addition to

    its developm ent exp erience.

    The acqu isition of Co sw orth Tec hnology by

    M AH LE in 2005 m arked an extension to

    the product po rtfolio u nprecede nted in the

    history of the co m pan y. D ecad es of expe-

    rienc e in developing high-perform ance an d

    m otorsport engines especially w orth

    noting h ere is the lege nd ary DFV Fo rm ula

    1 eng ine of the 19 60s an d 19 70s, wh ich

    notched u p a total of 155 G rand P rix vic-

    tories, an d the first fou r-valve eng ines for

    M ercedes and O pel at the end of the

    1980 s have created a skilled team , w hich

    recen tly provide d a crucial contribu tion to

    O EM engine developm ents with bench-

    m arking po tential. The broad horizon of ex-

    perience in de velop m ent activities e xtends

    from con cep tual studies, all areas of C AE

    ana lysis, design , func tional developm ent

    on com ponent and dynam om eters as w ell

    as eng ine a pp lication and calibration

    throug h to co m plete vehicle integration.

    The fact that the ch arge exch ang e w ith the

    resultant (bec ause indu ced ) com bustion

    cham ber m ovem ent can m ore or less be

    rega rded as an elem ent conn ecting a ll

    developm ent wo rk on the eng ine form s the

    basis un derlying the profound expertise o f

    our en gineers in the area of cylinder head

    developm ent. The n am e C osw orth is close-

    ly associated w ith high-perform ance en-

    gines w hose unrivalled perform ance prop-

    erties are the result of m eticulou s fine-

    tuning of their gas-dyna m ic param eters.

    Valve tim ing, valve lifts, channel geom etries

    and intake pipe lengths, as w ell as co llec-

    tor volum es a nd their distribu tion have

    alw ays be en stand ard features of our devel-

    op m ent activities. 10 0 H P/lfrom a na tu-

    rally-aspirated eng ine under conventional

    series con ditions are not the result of exot-

    ic high-tech app lications, but rather target-

    ed a nd hen ce efficient system coo rdination.

    D irect injection, the d esire for increased

    perform ance through su percharging as w ell

    as the required reduction in u ntreated en-

    gine em issions e.g. through internal or cool-

    ed external exhaust gas recirculation po se

    new cha lleng es w hich significantly extend

    our stand ard repertoire o w ing to the in-

    creasing nu m ber of individual com po nen ts

    w hich have to be ha rm onized w ith each

    other. Only an und erstand ing of all interre-

    lations guarantees o ptim um (cost/benefit)

    and robust solutions (tolerance and sensi-

    tivity to w ear) now and in the future.

    M AH LE is currently w orking on num erous

    new de velop m ents w hich w ill further

    increase op eration al flexibility and hence

    the efficienc y o f future m ass-produc tion

    engines. These developm ents are co n-

    centrated on the cylinde r head an d b ene-

    fit from the expertise of M AH LE Po w er-

    train. System s for valve deactivation or for

    valve lift chan geover, as w ell as system s

    w hich ultim ately enable com pletely new

    com bustions p rocesses, such as con trolled

    auto-ign ition in gaso line e ng ine s are

    w orthy of note here. As su ch system s

    som etim es require ch ang es to existingbasic de signs of the cylind er head or have

    to be taken into ac cou nt righ t from the

    start w ith new designs, being ab le to

    develop the cylinde r head system from a

    sing le sou rce represen ts an ob viou s

    advantage.

    The driving force beh ind the developm ent

    process is the sim ulation, wh ich suppo rts

    the conc ept form ulation and design pro-

    cess a nd p rovides im po rtant inform ation

    on the test program s required. W hether

    charge exchan ge and engine process cal-

    culations, non-linea r therm o-m echanical or

    dyn am ic structural ana lyses, CFD calcula-

    tions e.g. for designing c harge e xchang e

    elem ents, com bustion cham ber geom e-

    tries, injection system configurations o r flow

    analyses in the coo ling w ater jacket, dynam -

    ic m ultibo dy sim ulations and N VH op tim i-

    zations: the c ylind er head com plete system

    is righ t at the center of this work. The sim u-

    lation w ork is co ordinated according to

    requirem ents on the basis of spec ified pro-

    ject m ilestones. Targeted trials, com ponen t

    tests or dam age a nalyses are applied for

    this, all of w hich c an be provided at our

    com pan y. Sim ultaneou s engineering con sti-

    tutes an essential factor for efficient use of

    the sim ulation . This in turn c alls for speed

    and an accurate selection of the sim ulation

    tools. Experience and com petence are

    ind ispensab le here, as is integrated project

    planning w ith agreed d esign review s during

    the d evelopm ent phase.

    Th e prod uction facilities, alread y used pre-

    dom inantly for the p rod uction and assem -

    bly of cylind er hea ds, co nstitute a further

    cornerstone of our system s com petence.In a dd ition to the e fficient foundry for pre-

    cision die-cast parts in a lum inum , M AH LE

    Pow ertrain also ben efits from m ach ining

    cen ters suitable for series prod uction as

    w ell as a ssem bly lines w ith a level of flexi-

    bility allow ing for the prod uction an d

    assem bly of prototype batch sizes at the

    sam e tim e.

    The foundry uses the patented C O SC AS T

    process w hich h as b een specially de velop-

    ed for true-to-shap e and w eigh t-op tim ized

    com pon ents capable of w ithstanding ex-

    trem e loads. Very sm all w all thicknesse s

    can be realized thanks to the use of zir-

    con sand , w hich exhibits the low est possi-

    ble core displace m ent ow ing to its low

    therm al exp ansion in the m elt. M oreove r,

    the m elt is extrem ely pure due to the na -

    ture of the p rocess w hen m elting the

    alum inum feed stock, w ith the result that

    trem endo usly hom oge nous structures can

    be achieved in the subsequent com po-

    ne nt. In p articu lar, filling the m old via a

    m elt pu m p from be low , i.e. head first,

    gua rantees m inim um turbulences du ring

    the ca sting . Th is typically preve nts the

    oxide layer alw ays p resent from interacting w ith the co r

    the co m po nen t, instead al

    pen etrate the w alls o f the

    com ing into contact w ith th

    controlled m old filling also re

    few gas traps in the com pon

    low est possible residual stres

    In order to ensure the high est

    ity, all the q ua lity tests neces

    (com po nent m easurem ents,

    m aterial testing , real-tim e X -ra

    sure tests, eng ine hot tests)

    gral com pon ent of our produ c

    M AH LE Po w ertrain ha s the ta

    the op tim um solution und

    bound ary conditions. C om plian

    utory em ission lim its, ach ievin

    possible fuel consum ption a

    low production costs with high

    ability are ind ispe nsable elem

    w ork. W e are also pleased to

    add ed b onus for our custom

    and perform ance values be

    for driving pleasure an d c om

    da y road traffic.

    C YLINDER HEADS :A N E W M A H L E A C H IE VE M E N T

    3d in-cylinder flow field (left), mixture formation (middle) and combu stion (right) in a GDI eng

    Thermal Stress on the cylinder head (a), instantaneous surface temperatures (b),

    cooling flow in the water jacket (c) and contact p ressure distribution to the cylinder head g asket (d)

    (a)

    (b)(c)

    (d)

    V A L V E TR A IN

  • 8/12/2019 news letter from Mahle

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    MAHLE crankcase ventilation systems

    are reliably cleaning the oil-loaded

    gases out of the crankcase. Thus, oil

    consumption can be decreased further

    and emission limits are fulfilled. The

    oil mist separator, integrated into the

    crankcase ventilation, separates the

    aerial from the liquid elements. The

    extracted oil is newly integrated into

    the oil circulation and the purified air

    into the intake system. The quality ofthe oil mist separator has direct

    influence on the combustion and the

    oil consumption of the engine. Oil mist

    separators steadily gain importance

    due to the pollution during changing

    operating conditions of premium com-

    ponents such as mass-airflow sensor,

    turbo charger, charged air cooler or

    exhaust sensor.

    Oil mist separator and pressure

    regulation

    For gasoline a nd diesel eng ines, pressu re

    in the crankcase is lim ited b y ventilation

    using spring-load ed valves either regulat-

    ing the pressure or lim iting the flow rate.

    The valves are developed at M AH LE and

    are designed as either m em brane or

    throttle valves integ rated in the ven tilation

    system . D ifferent separators can be a p-

    plied to sep arate the oil m ist from the ga sflow . The sep arator is cho sen w ith resp ect

    to requirem ents such a s the nece ssary

    sep aration rate an d p erm issible pressure

    drop , the existing installation space as w ell

    as costs and m aintenance requirem ents.

    Per f

    A IR M A N A G E M E N T

    16 Per for mance

    A IR M A N A G E M E N T S Y S T EM S

    What purpose does crankcase

    ventilation with oil mist separation

    serve?

    D uring the c om bustion process o f a piston

    eng ine, gase s w ill alw ays p ass by pistons

    and rings into the crankcase. Du e to high

    tem peratures and high p ressure differen-

    ces betw een the com bustion cham ber and

    crankc ase, the o il adhering at the piston

    is carried along and dispersed into fine oil

    m ist.

    For environm ental reaso ns, it is not accept-

    ab le to em it the engine ventilation into the

    atm osp here. Instead, the b low -by gases

    are clean ed of the oil m ist and returned to

    the com bustion proce ss. This gives rise to

    two tasks. The resulting overpressure in

    the crankcase m ust be discharged to a

    defined vacu um level using a ventilation.

    In add ition to this, the ven tilation m ust be

    clean ed of the oil droplets by sep aration.

    The q uality of the oil m ist separation has

    a significan t im pac t on the em ission b eha v-

    ior of an eng ine and crankc ase ventilation

    is thus of increasing im po rtanc e w ithin

    engine developm ent.

    Separation mechanisms and their

    implementation

    M AH LE u ses inertia-driven sep arators,

    developed either as a passive o r as an

    active system . Am on g the passive inertia-

    driven sep arators a re sp irals, im pactors

    and cyclones. Base d o n a sim ple con struc-

    tion princ iple, they a re resistant to d irt,

    m aintenance-free an d ac hieve a g ood to

    very goo d separation perform ance . In the

    case of a passive system w ith very highsep aration requirem ents, additional fiber

    filter elem ents ca n b e u sed follow ing the

    inertia-driven sep arator. Am ong the ac tive

    system s are driven c entrifug es, such a s

    the plate separator which co m bines low

    pressure drop w ith outstand ing se pa ration

    perform anc e. Inside the en gine, sep aration

    system s are also c om bined , e. g. w ith the

    cam shaft.

    M AH LE integrates crankcase ventilation

    system s in valve co vers or oil m od ules. This

    results in integrative com po nen ts w hich save

    costs and installation spa ce. The se ha vebeen developed at M AH LE w ith respect to

    future requ irem ents regarding ventilation ,

    sep aration and func tional integration.

    IN TEG RATIO N SAVES IN STALLATIO N SPAC E A N D C O STS

    C RANKC AS E VENTILATIONW ITH O IL M IST SEPAR ATO R

    Multi-cyclo ne as oil mist separator w

    regulating valve

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  • 8/12/2019 news letter from Mahle

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    20 Per f or m an ce Per f

    M A H L E P O

    Direct injection opens up new oppor-

    tunities for supercharging in gasoline

    engines, as downsizing really comes

    into its own in conjunction with high-

    pressure charging. The combination of

    direct injection and supercharging is

    today's prior art in diesel engines. It is

    this development in particular which

    has paved the way for advances in the

    specific power and torque of low fuel-

    consumption, auto-ignition systems

    and played a crucial role in the diesel

    boom of the last few years.

    Th e introd uction of direct injection in gas-

    oline e ngines creates new op po rtunitiesfor sup ercharging in these eng ines as w ell.

    Som e of the d raw backs in supercharged

    m ulti-point injection e ngines a re now com -

    pensated for w ith direct injection. Ab ove

    all, the vap orization of the fuel within the

    com bustion cham ber plays a significant

    role in coo ling the co m bu stion p rocess.

    The lim it tem perature w as also increased

    further thanks to advance s in the m ateri-

    als for turbocharge rs. As a result, the fuel/

    air m ixture no long er needs to b e g reased

    to such an e xtent at higher load s. A sig-

    nificant red uction in fuel co nsu m ption is

    conseq uently ac hieved in real-life driving

    m ode.

    The torqu e is proportionally dep end ent on

    the displacem ent and the break m ean

    effective pressu re. Increasing the b reak

    m ean effective p ressure m eans that the

    displacem ent can also be redu ced w ith-out ad versely affecting the en gine perform -

    anc e. In o ther wo rds, dow nsizing entails

    increasing the p ow er and torque p erform -

    anc e of sm aller engines so that they can

    replace larger eng ines. Th ese e ng ines

    have the follow ing a dva ntage: sm aller en-

    gines w ith less displacem ent (possibly w ith

    less cylinders) consequently w ork in m ore

    effective op erating po ints, w hile e xhibiting

    less losse s through friction and cha rge

    exchan ge, accom pan ied b y im proved effi-

    cienc y. This red uce s the fuel consum ption

    yet furthe r.

    N evertheless, m any cha lleng es still rem ain

    as regards d ow nsizing . In particular, the

    increase d therm al and m ech anical stresses

    as w ell as kno cking tende ncies in the com -

    bustion p rocess create problem s. Thu s, for

    instance, the respo nse p erform ance of

    dow nsized turbo eng ines d uring acce lerationfrom low er speeds is m uch less effective

    than in large r naturally-asp irated en gines.

    Engine

    2.4-liter V6

    1.8 T

    Max.

    Performance [kW]

    125

    120

    Max.Torque

    [Nm]

    230

    225

    Vmax

    [km/h]

    225

    228

    0 100 km/h

    [sec.]

    8.8

    8.6

    Fuel Consumption (l/100 km

    Within City Limits Outside City Limits

    13.611.3

    7.26.4

    % Improvement

    Figure 2

    Performance, torque and fuel consump tion for a

    vehicle with 2.4-liter engine compared to an engine

    with 25% less displacement through downsizing

    DOWNS IZINGR E D U C E S FU E L C O N S U M P TIO N

    M A H L E P O W E R T R A IN

    Intensive work is currently being carried

    out tow ards so lutions for these problem

    areas. Turbo chargers w ith variable geo m -

    etry, two -stage turbocharging or also a

    com bination o f turbo and m echan ical

    cha rgers are op tions here. Neve rtheless,

    these system s all have an uppe r lim it in

    the leve l of cha rging .

    Su percharging w ith c harging pressures o f

    m ore than three bar loo ks set to provide

    a further increase in efficiency. H ow eve r,

    the com po nen t streng th then req uires

    eng ine o peration in the M iller proce ss,

    w hich thereb y restricts the propo rtion ally

    increasing m axim um pressure. Pa rt of the

    com pression is displaced outw ards as a

    result. The co oled ch arge air has a ve ry

    high density, resulting in b reak m ean effec-

    tive p ressures w ell above 25 bar. At the

    sam e tim e, the low final com pression tem -

    perature prevents kno cking during com -

    bustion. Suc h a c once pt enables the en -

    gines to be dow nsized e ven further and

    allow s correspo nding consum ption ad van-

    tages, provided that the respo nse p erform -

    ance and low -end torque are at an effec-

    tive level as a result.

    Figure 1:

    Shift in operating point through downsizing

    These benefits in real-life cust

    tion im prove the acc eptance o

    eng ines. Increasing fuel prices

    peop le to chan ge their w ays

    Su percharging w ill increasingl

    fuel saving in gasoline eng ines

    just as a m eans to bo ost pe

    top m otorizations.

    As a system s pa rtner to the

    ind ustry, M AH LE c an offer it

    com petent sup po rt for tech no

    ership w ith integrated so lution

    of dow nsizing.

  • 8/12/2019 news letter from Mahle

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    MAHLE is represented in all key re-

    gions of the automotive industry with

    development activities as well as its

    own technology centers. A further de-

    velopment center in Shanghai/China is

    set to open its doors on April 19, 2006.

    This ensures that MAHLE is present

    with technological expertise in one of

    the most important growth regions of

    the world. MAHLE Per f o rmancespoke

    to Dr. Uwe Mohr, Director Research

    and Advanced Engineering of MAHLE

    International GmbH about the oppor-

    tunities in China, as well as interna-

    tional networking and regional anchor-

    ing of our technological expertise in

    the markets.

    China a growth market. What tasks

    will the new regional Headquarters

    in Shanghai assume central researchand development projects as well?

    The new regional H eadq uarters in S hang -

    hai w ill com bine ce ntral functions for our

    prod uction plants in C hina, for instance

    developm ent, testing , laboratories, sa les,

    hum an resources, IT a nd finances. W e sha ll

    not have a research center there in the

    sense of fund am ental research, as has

    been incorrectly portrayed b y som e in the

    m edia. O ur app roach is no t to transfer

    core com petencies in the areas of resea rch

    and predevelopm ent to C hina, but instead

    to serve the loc al m arket w ith its specific

    requ irem ents through a local developm ent

    team . The develop m ent center is therefore

    integrated w ithin the new region al H ead -

    qua rters develop m ent functions such as

    design, com putation, com po nent testing,

    engine testing , electronics lab oratory, che-

    m ical laboratory, m etallog raphy etc. being

    loca ted h ere. In o ther w ords, all the func-

    tions required to develop a p roduc t from

    the blank shee t of pape r to testing in the

    eng ine and , finally, approval by the custom -

    er. W e ha ve R &D centers in S tuttgart, Nor-

    tham pton, Detroit, So Pa ulo, Tokyo a ndshortly in S hang hai too. A nd only a few of

    these are ac tually invo lved in p ure re-

    search and prede velopm ent w ork.

    What does the market in China call

    for? How do you collaborate

    with automobile manufacturers?

    In g eneral, all the reg ion s have their ow n

    requ irem ents. O ur aim is to fulfill them re-

    giona lly as w ell, w ith reg ion al contacts and

    close interaction betw een custom ers and

    supp liers. The C hinese m arket dem ands

    products at very low prices. The local ex-

    hau st gas regu lations a re currently at the

    level w e ha d se veral years ago. W hen it

    com es to developm ent, autom obile m anu-

    facturers in C hina tend to follow the tradi-

    tion al rou te: The y w ill typically have the

    com plete eng ine d eveloped by a Europe-

    an e nginee ring service p rovider, and then

    produce it in C hina.

    Why is MAHLE going to Shanghai

    then?

    In the future, Ch ina w ill have its ow nautom otive ind ustry w ith self-sufficient

    areas of developm ent. And w e can expect

    this trend to continue at a fast pac e. W hat

    is lacking for the tim e being, tho ug h, is

    the expertise of a sup plier in the country,

    w ho speaks the sam e language and can

    be integrated sim ultaneously in the d evel-

    opm ent process. W e have decided to

    bu ild up a local developm ent cap acity just

    w here the m arket need s it. If w e sup ply

    our custom ers on site tod ay, that w ill give

    us unrivalled op po rtun ities for establishing

    lasting and viab le su pp lier relation s w ith

    a h igh level of custom er loyalty. W e there-

    fore attach c on side rable im po rtance to

    project team s w ith sales peo ple an d d e-

    velop ers w ho know the regional cond itions

    in this m arket, w orking together effective-

    ly w ithin a close ne twork. An d all this on

    the ba sis of a standardized M AH LE p rod-

    uct developm ent process, which is acce pt-

    ed internationally and ensures perm ane nt

    qu ality righ t from the start.

    How extensive is the knowledge

    transfer to China?W e alread y carry out production at seven

    plants in C hina. Nu m erous com pan ies lim it

    their activities in C hina to p rodu ction for

    com petitive reason s. You can view this

    from two sides. W e be lieve that a collabo-

    ration b ased on the de velopm ent of tech-

    nological com petence in the c ustom er's

    ow n language enables an open dialog

    and offers m ore op po rtunities on a long-

    term basis. In S han ghai, we are prim arily

    conce rned w ith cu stom er requirem ents

    and developm ent over the n ext three tofive ye ars. To this en d, em ployees from

    Shan ghai have received spe cial training on

    our Product Lines in different regions over

    a pe riod of 6 to 9 m onths. But one thing

    is clear: Th e fundam ental exp ertise at

    M AH LE rem ains at central locations w here

    w e actually carry out fundam ental research

    and custom er-indep ende nt predevelop-

    m ent. There we w ork on tasks wh ose

    sign ifican ce is trans-regional and lon g-

    term , and d evelop products for the n ext

    decade.

    How does the international network-

    ing of development centers work?

    Through extensive p roject m anag em ent

    w ith internation ally exp erienced p roject

    m anag ers w ho are fam iliar w ith the unique

    character of a coun try's culture an d c ustom -

    ers, and w ho provide targeted im petus to

    developm ent w ith p ow erful process tools

    and the very best staff. Key priorities a re

    defined together w ith the individu al devel-

    op m ent centers in the regions, de term in-

    ing w hich issue s requ ire greater attention.

    In this w ay, w e can com bine o ur energies

    and ach ieve synergy effects.

    What advantages does MAHLE offer

    the market with its structure?

    W hen it com es to the interaction of com -

    po nen ts and products, it is safe to say

    that we en joy the m ost com prehensivesystem s exp ertise there is in the a rea of

    com bustion en gines an d eng ine pe riph-

    erals. That pu ts us in a very strong p osi-

    tion for the future. To rem ain a hea d in re-

    spect to costs, perform ance and w eight in

    an increasingly com pe titive fie

    zation, you need a firm grasp

    relations. The m ore you un de

    how the produ cts influen ce

    the g reater the op tim ization p

    can ach ieve. Th is is reinfor

    close co ntacts w ith science a

    com bined w ith our expertise

    netw orked g lob ally and firm ly

    gion ally.

    What are your personal int

    Dr. Mohr?

    I am pa rticularly interested in

    of know ledge m anagem ent

    or to en sure that the expe r

    bu ilt up is availab le to ev

    need s it for their work. After a

    tive is to insp ire our custom e

    standing pe rform ance tim e

    M AH LE resem bles a d ynam ic

    organism and , as such, ena

    do us sco pe for individu al cre

    it is extrem ely satisfying to

    achieve our goals with this cr

    Dr. Mohr, we thank you for

    interview.

    N E W R E G IO N A L H E A D Q U A R TE R S IN

    S HANG HAI

    22 Per f or m an c e Per f

    INT ER VIEW

    Dr. Uwe Mohr, Director Research an

    Engineering of MAHLE International

    The new regional Headquarters of MAHLE

    in Shanghai