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Developing a drivetrain to meet today’s expectations is a formidable task. Comfort

and performance are critical factors in determining the success of today’s vehicles.

Car and truck buyers expect durable, quiet, vibration-free, smooth vehicles with

brisk acceleration and solid, confident handling. Add to these requirements the

continuing need to increase vehicle efficiency while delivering more horsepower,

and you have significant engineering challenges.

The industry is changing as consumers increase their acceptance of fuel-saving

powertrains with technologies as diverse as diesel, ethanol, hydrogen, gas-electric, and

plug-in electric. Demand for these systems is growing, and the competition to provide

technology with a high level of durability and refinement is becoming fierce.

To meet these demands, you need tools that can help you build performance into your

products without compromising quality. These tools must have the capability to help you

quickly determine the effectiveness of your components, and must provide your designers

and product managers with feedback on the areas that need improvement.

Drivetrain Test Systems

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T o o l S f o r i m p r o v i n g D r i v e T r a i n p e r f o r m a n c e a n D D u r a b i l i T y

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mTS has been providing chassis development systems to the automotive community

since 1966. We understand the challenges drivetrain customers face and we know

how to work with you to address the needs of your ever-changing marketplace.

in more than four decades of serving the automotive industry, mTS has developed

a set of tools that provide valuable information to product managers and engineers.

These tools include standard turn-key systems, custom systems built to meet a

specific need, and system components that you can integrate into your laboratory.

only mTS can provide the full range of testing solutions, including: servo-hydraulic

actuators, electric dynamometers, and mechanical fixtures developed specifically for

drivetrain applications. industry standard mTS controllers and software provide the

interface to reproduce real-time events such as engine cylinder firing pulses and other

torque transients. Trust mTS to provide the testing expertise necessary to help you

deliver drivetrain systems that meet your customers’ expectations.

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Drivetrain Dynamometers

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The Drivetrain Dynamometers are compact in size, enabling

the dynamometer to be directly connected to the test subject,

eliminating unnecessary shafting and joints that cause

torque errors during the test. They have been designed to

accommodate a wide range of drivetrain architectures, such

as transverse mount front-wheel drive (fWD), all wheel drive

(aWD), and hybrid electric.

These dynamometers can come equipped with engine

torque pulse simulation capability for realistic transmission

development in the laboratory. Their low inertia and extremely

high power allow you to simulate the actual cylinder firing

torque during each revolution, adding a new level of fidelity

to drivetrain performance testing.

MTS has developed permanent magnet dynamometers and modular vector control

drive components specifically designed for transmission and transaxle manufacturers.

Based on advanced technology first developed for Formula 1 racing gearbox testing,

these Drivetrain Dynamometers feature the low inertia and dynamic performance

required to accurately reproduce the loading from an internal combustion engine or

hybrid powertrain during transmission development.

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Drivetrain Dynamometers from mTS are also exceptionally

clean and quiet. Due to a unique design that does not

require messy oil or noisy fans to keep the rotor cool,

these dynamometers are capable of being used in anechoic

environments to study the noise, vibration and harshness

(nvH) properties of drivetrain components and systems.

mTS Drivetrain Dynamometers can be coupled to test

systems for a wide range of applications and are the most

adaptable dynamometer component available today. They

are particularly well suited for transaxles and transfer case

development due to their very compact size, and are the

perfect choice for the evolving world of drivetrain alternatives.

aWD Systems Development

mTS also offers traditional ac dynamometers and drives. These dynamometers

are practical alternatives where low inertia and high dynamics are not required for

the test, such as in simple durability testing.

mTS offers the integration of various technologies in a complete system,

including input and output dynamometers for different test applications such as

transmission only, or complete driveline testing, in 2WD or aWD configurations.

Servo-hydraulic, traditional ac dynamometers, and mTS proprietary permanent

magnet technology can be seamlessly combined to meet your application needs.

MTS Drivetrain Dynamometers are a good choice for active torque transfer devices

common in many modern AWD vehicles. The compact size, power, and ability to use for

NVH testing make them particularly attractive solutions for performance characterization,

tuning, and early development of transfer cases and power take-off units (PTUs).

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mTS 839 Sprague clutch System

MTS has developed a test system to address the unique set of challenges presented

by sprague clutches. The design utilizes a low speed motor to rotate the inner

race of the specimen at up to 20 rpm with respect to the outer race. The system’s

hydraulic actuator and lever assembly then ratchet the outer race equal to the inner

race rotation speed. This ratcheting lock-ups the clutch in order to duplicate the

sometimes punishing conditions that occur in actual service. An optional automatic

transmission fluid conditioning system is available, allowing you to achieve accurate

simulation of real service environments.

a unique peak load detector helps ensure that the maximum

specified torque is applied to your specimen on every cycle.

running on the industry-standard mTS flexTest® test control

platform using simple block programming, it coordinates control

of the Dc drive motor and hydraulic stroke so the model 839 will

apply full torque cycles to your specimen at up to 20 Hz. Data

acquisition channels provide for simultaneous measurement of

torque, aTf temperature, number of torque cycles, frequency,

time, and position.

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mTS 814 clutch Test System

The need to realistically simulate speed and torque led

mTS to develop the model 814 Spinning Torsion system.

it features a rotary hydraulic actuator driven with a motor

(either hydraulic or electric). Hydraulic slip-rings provide oil

flow from the servovalve to the torque actuator.

a unique high-precision shear-beam torque cell with

integrated angular accelerometer is connected through slip

rings to provide feedback for test control. mTS also offers

transducers to measure angular displacement and speed.

High-frequency torque fluctuations may be simulated with

spinning torsional systems to reproduce the dynamics of

a running engine with speeds up to 7000 rpm. for clutch

testing, the primary objective is to test the clutch’s damper

section. Testing the damper simulates the clutch in an

engaged condition. for slipping clutch applications, it is

possible for you to run the system at the slip speed and

react the transmission side of the clutch to ground.

The mTS Spinning Torsion system can also be configured

to allow testing of wet clutches with engage and disengage

cycles under controlled environmental conditions.

The performance of clutches and couplings changes with speed. The applied

centrifugal force changes the dynamic behavior of components such as

springs as they deflect. Couplings designed to slip have isolation properties

that must be evaluated under realistic conditions.

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Transmission component Test benches

MTS supplies rotary actuator components, and

test bench design expertise to configure a test

system for any budget. Using proven actuator

designs along with many other standard products

(servovalves, transducers, and controllers), MTS

can configure test stands for many components

used in today’s vehicle drivetrains. With MTS

rotary actuators and test heads you can measure

static and dynamic hysteresis, deflection of the

clutch plate, and fatigue due to cyclic torque and/

or engage-disengage cycles.

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mTS 813 four Square System

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The four Square principle creates a highly efficient test system. using a unique

gearbox with integral spinning torsional actuators, the torque is recirculated in the

system by creating a continuous mechanical loop. gearboxes placed at each end

of the system link the test articles together, and the torque is reacted among the

shafts under test. mTS uses two high-performance spinning torsion actuators and

two electric drive motors placed at the four corners. The result is a highly responsive

system with evenly distributed torque in each of the specimens.

The system may be configured to test two or four specimens at a time. an optional

power ball-screw gearbox positioner provides you with the ability to change

specimens faster and with greater ease. environmental chambers, temperature

probes, pyrometers, and other sensors can be purchased as options or upgrades later.

MTS 813 Four Square systems are used to test axle and drive shafts with their joint assemblies under realistic in-

service conditions. Using our advanced test system controller technology, the MTS Four Square can be used to

reproduce, in real time, the actual torque, speed, jounce, steer and plunge inputs to your components with speeds up

to 8000 rpm. You can closely simulate the environment of the shaft joints by monitoring and controlling temperature

with optical pyrometers, or by introducing air flow, mud, dirt, or moisture. The result is a highly effective laboratory

simulation you can use to quickly evaluate your joints, drive shafts and propeller shafts.

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Dynamometer-based Testing

MTS offers a wide range of AC-dynamometers that are perfect for more demanding axle and prop

shaft testing. These systems can be equipped with mud and salt slurry environmental chambers to

meet the most grueling tests required by some OEMs. Dynamometer systems from MTS recycle

the power electrically, providing a system that is economical to operate and still possesses the high

power necessary for applications such as off-highway, heavy and medium truck testing. MTS has vast

experience in providing extremely large dynamometer systems for specialized testing purposes.

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Torsion Tests

mTS offers the following features in its

industry-leading rotary actuators:

• model 215: Dynamic torque ratings from 226 n-m to 11,000 n-m

• model 216: Dynamic torque ratings from 22,000 n-m to 82,000 n-m

• Dynamic rotation of 90 degrees (+/- 45 degrees)

• Heavy-duty roller bearings to withstand the high radial loads associated with

rotational testing while providing low friction and long life

• a precision-machined, fatigue-rated design with one piece rotor bearings

that reduce friction and eliminate backlash that can cause load spikes and

disturb loading rates

• Hydrostatic thrust bearings and precision matched rotor-cylinder sets to

reduce friction and wave form distortion

• fatigue rating for cyclic use and extended service life

• Hydraulic cushions to protect the actuator when maximum displacement

conditions occur

Rotary actuators are the critical component in axle, drive, and propeller shafts test

benches. These simple systems provide you with the ability to quickly assess fatigue

life by applying cyclic or dynamic torque in an easy-to-configure test. A long-lasting,

high performance actuator is critical in the design of such a test bench.

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Spinning Torsion Tests

mTS model 217 Spinning rotary actuators are used to provide torque pulses

in a rotating environment. They can be driven with either an electric or

hydraulic motor, and have the following features:

• model 217: Dynamic torque ratings from 500 n-m to 4,000 n-m

• maximum rotation speed of 6000 rpm

• optional high-speed balancing for up to 20,000 rpm operation

(1000 n-m dynamic torque)

• Heavy-duty roller bearings to withstand the high radial loads associated

with rotational testing while providing low friction and long life

• a precision-machined, fatigue-rated design with specially fitted rotor

bearings that reduce friction and eliminate backlash that can cause load

spikes and disturb loading rates

• Hydrostatic thrust bearings and precision matched rotor-cylinder sets

to reduce friction and wave form distortion

• fatigue rating for cyclic use and extended service life

The mTS Spinning rotary actuator can be used to build torque loop test

systems for durability testing of shafts and joints. These components can

also be used to develop transmission test stands that reproduce the dynamic

loads associated with engine torque pulses.

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Structural Testing

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many of today’s gas and diesel engines would cease to function after several minutes without a crankshaft torsional

damper; the shaft would fracture, “venting” the engine. The ultimate, smooth drivetrain is often developed by adding

a torsional damper. The characteristics of this non-linear, elastomeric device are critical to providing the optimal

damping properties at the required frequency without adversely affecting other aspects of driveline performance.

To provide you with the tools you need, mTS has engineered a variety of elastomer characterization systems. These

high-performance, sophisticated testing tools have been designed with control and analysis software that will

generate a great deal of information on your torsional damper. mTS elastomer test systems are able to apply loads at

up to 1000 Hz. We developed the first ever multi-axial system for evaluating elastomers under tri-axial conditions, and

today we can build a system to measure both the torsional and axial properties of your elastomeric dampers.

mTS has a broad range of tools for structural testing of your products. We can supply

actuators and load frames to test structures including: axle housings, crank shafts, con

rods, and engine blocks. We can either build a system for you, or provide you with the

components to do it yourself.

no matter what test system you build or buy, mTS offers you a broad range of controller

options. you can choose from a set of building blocks to configure a fully integrated solution

for your entire laboratory.

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engine Torsional Damper Testing

modular Solutions

We recognize that your mechanical testing needs are as unique and

specific as your products, so MTS has developed modular solutions

that allow you to engineer a test system that meets your immediate

needs, and can accommodate your changing requirements.

mTS Testline components are the same as those

integrated into the most advanced mTS custom

test systems. They are precision engineered to

the highest quality and designed for seamless

integration. every Testline component ships with a

published specification that it will meet or exceed.

mTS engineers work directly with you throughout

the ordering and specifying process, integrating

the components of each order and checking their

performance before they are shipped.

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rpc® Software

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remote parameter control (rpc) software provides the ultimate in test

accuracy. rpc pro is the latest evolution of the world’s leading software

suite for data validation, analysis, laboratory simulation and test monitoring.

The advantage of rpc is that rather than developing a test based on desired

actuator inputs, you develop your test using field measured responses

– responses from transducers mounted on or around the test article.

These transducers may be remote from the actuators themselves.

once the desired response has been developed, the rpc software

measures a dynamic model of the system and through an iterative process

develops an actuator drive signal that reproduces the desired response. The

rpc software is then able to provide sophisticated online data analysis to

help ensure that the test maintains its accuracy and to detect any changes

to the specimen as the test progresses.

S u p e r i o r a c c u r a c y f o r b e T T e r i n f o r m a T i o n

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mTS controller family

The flexTest Se digital controller offers real-time closed-

loop control of single-channel and two-channel tests. The

flexTest Se has front panel system controls for use without

a computer, facilitating convenient test monitoring and

specimen handling. you may further expand functionality by

using a computer to access flexTest software applications.

The flexTest vme-based hardware includes a processor,

a two-stage or three-stage valve driver, digital universal

conditioners, and analog input channel, three analog output

channels, four pairs of digital i/o, a multi-position handle, and

a 100mbps ethernet port. flexTest Se controllers can also be

linked to run multi-channel tests. This portable controller can

be conveniently positioned on or near a load frame.

f l e X T e S T ® S e c o n T r o l l e r

The MTS controller family provides a complete range of powerful and scalable

digital controllers, designed to address material testing applications including

component, sub-system, and full system testing.

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mTS controller family

f l e X T e S T ® g T c o n T r o l l e r

The flexTest gT is a proven control solution for performing complex drivetrain

component testing. This flexible controller delivers high-speed, real-time closed-

loop control, data acquisition, function generation, and transducer conditioning.

easily reconfigure your flexTest gT controller as your needs change. by

adding hardware and software modules, you can readily expand your system’s

capabilities and customize it for a wide range of tests.

Designed for multi-channel, multi-station configurations, one flextTest gT

controller can drive several test systems. capable of supporting up to eight

channels and multiple stations, the flexTest gT enhances productivity by

allowing you to manage several stations from one pc screen. or, if you prefer,

the pc-per-station option enables you to employ additional pcs so different

operators can run their respective test stations without having to share a pc.

This option also makes it possible to support test stations in different locations.

The flexTest gT runs with mTS 793 software and a multitasking Windows®

operating system, allowing you to take advantage of the full array of proven mTS

test application software.

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mTS controller family

The mTS advanced Dynamometer controller (aDc) is an

expandable, flexible, fully digital control system designed for

a wide range of test applications. The aDc controller uses

Windows® multi-tasking operating system, and allows you to

define new tests or analyze results of prior and current tests

while the current test is running. The mTS aDc is used for

simulating test conditions including torque-speed, speed-

torque, speed-speed (unlocked specimen), road load, and

inertia simulation. a flexible data acquisition system is also

included for analysis.

The mTS aDc, based on industry leading mTS controller

hardware, is an efficient and powerful platform for drivetrain

testing. This controller provides a Windows-based graphical

interface to your dynamometer system, allowing you to use

predefined templates to change test configurations quickly.

it also uses a scripting language that gives you the power to

create high levels of automation.

a D v a n c e D D y n a m o m T e r c o n T r o l l e r ( a D c )

This controller features a direct connection to an embedded

disk, which provides high speed sustained data play out and

data acquisition of either time history or telemetry data. The

embedded real-time processors are used for all closed loop

control, transformations and other processing that requires

very high update rates. To enable high speed interfaces to

ecus and other third party devices, pmc modules have

been integrated into the system providing various standard

interfaces such as canopen and reflective memory.

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experienced professionals

37

MTS mechanical, electrical, software, and systems engineers represent the best

in the business. Our engineers work directly with you so that they are able to

understand your issues, concerns, and constraints.

When you place an order with MTS, your order is assigned to a professional

Project Manager who ensures that your system is built to meet the agreed-upon

specifications with predictable delivery and high quality. The Project Manager is

your representative in the factory, a focal point at MTS who always knows the

status of your order and is able to find answers to your questions.

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mTS understands how test systems are used. When you purchase a simulation system from

mTS, a test consultant will work with you as you commission the system. The consultant

will help you design your tests, select vehicle transducers, collect road data, edit and analyze

results, and, through the process, perform training. our main interest is in transferring the

technology to you so that you may be more productive.

once your system has been in operation for a while, you may decide you need more in-depth

training, or you may find that you need help on a specific test. These are the times when mTS

test consultants are of especially high value.

T e S T c o n S u l T i n g

people dedicated to supporting you and your system

mTS has a comprehensive network of sales and service offices around the world, so you can be sure

that, no matter where you are, we’re close by. We work hard to ensure that our representatives are

technically competent and well-equipped to meet your needs. a variety of service support contracts

are available, all of which guarantee the availability of fully qualified, trained field service engineers.

S e r v i c e a n D S u p p o r T

When you invest in mTS technology, you can feel confident that our years of experience, our global

network of support, and our integrated product line will combine to give you exactly what you need.

no matter how your needs change in the future, mTS will be there with you.

We believe it is our job to help you develop your products better and faster, yet with the consistent,

high quality you expect.

if the drivetrain test technology in this brochure is of interest to you, we welcome your technical

discussion. please contact your mTS sales engineer to take the first step toward improving your tests.

e a r n i n g y o u r c o n f i D e n c e

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ISO 9001 Certified.

1-800-328-2255 +1-952-937-4000www.mts.cominfo@mts.com

MTS Systems Corporation 14000 Technology DriveEden Prairie, MN 55344-2290 USA

©2007 MTS SYSTEMS CORPORATION100-179-405 DrivetrainTestSystems01. PRINTED IN U.S.A 03/07

Regional BuSineSS CenTeRS

The aMeRiCaS

MTS Systems Corporation 14000 Technology DriveEden Prairie, MN 55344-2290 uSa Toll Free 1-800-328-2255 Fax: 1-952-937-4515 E-mail: info@mts.com Internet: www.mts.com

aSia/PaCifiC

MTS Japan Ltd.ArcaCentral Bldg. 8F1-2-1 Kinshi. Sumida-kuTokyo 130-0021, JapanTelephone: +81-3-6658-0901Fax: +81-3-6658-0904E-mail: mtsj-info@mts.com

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euRoPe

MTS Systems FranceBAT EXA 1616/18 rue Eugène Dupuis94046 Créteil CedexFranceTelephone: +33-1-58 43 90 00Fax: +33-1-58 43 90 01E-mail: contact.france@mts.com

MTS Systems gmbhHohentwielsteig 3 14163 BerlinGermany Telephone: +49-30-81002-0Fax: +49-30-81002-100E-mail: euroinfo@mts.com

MTS Systems S.R.l. socio unicoCorso Cincinnato, 228/b - 10151Torino Italy Telephone: +011-45175.11 sel. pass. Fax: +011-45175.00-01E-mail: mtstorino@mts.com

MTS Systems norden aBSödra Långebergsgatan 16SE-421 32 Västra FrölundaSwedenTelephone: +46 31 68 6999Fax: +46 31 68 6980E-mail: norden@mts.com

MTS Systems ltd. uKBrook HouseSomerford CourtSomerford RoadCirencester GL7 1TWGlos. -United KingdomTelephone: +44-1285-648800Fax: +44-1285-658052E-mail: mtsuksales@mts.com

mTS, rpc, and flexTest are registered trademarks of mTS Systems corporation. Testline is a trademark of mTS Systems corporation. microsoft Windows is a registered trademark of microsoft corporation.