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-Kavitha.G

AIRCRAFT ENGINE

IGNITIONSYSTEMS

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The ignition system provies a spar! to

ignite the air"#$e% mi&t$re in the 'y%iners

o# a piston engine.

()AT IS AN IGNITION SYSTEM*

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Magneto systems

Switchable systems

Battery-operated ignition

Mechanically timed ignition

Electronic ignition

Digital electronic ignitions

TY+ES OF IGNITION SYSTEMS,

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PETROL EN!NES "ses an ELE#TR!# SP$R% &or

!N!T!ON'

D!ESEL EN!NES rely on ()EL #OMPRESS!ON

&or ignition'

$S T)RB!NES "ses M$ENTO T*PE ignition

systems+ also ha,e a #$P$#!TOR D!S#$RE!N!T!ON S*STEM "sing one or more ignitor pl"gs+

which are only "sed at start "p'

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RO#%ET EN!NES employ P*ROTE#N!#

DE.!#ES that place &lames across the &ace o& the

in/ector plate or SEL(-!N!T!ON #EM!#$LS'

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Most modern aircraft engines use magnetos to generate

the spark, magnetos are useful in aircraft because:

They produce a hotter spark at high engine speeds than

the battery system used in automobiles.

They do not depend on an external source of energy

such as a battery, a generator, or an alternator.

Self reliable,less weight.

MAGNETOS

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0OR%!N1

The magneto type ignition system is $se on most re'ipro'ating air'ra#t

engines.

Magnetos are engine riven se%#-'ontaine $nits s$pp%ying e%e'tri'a%'$rrent itho$t $sing an e&terna% so$r'e o# '$rrent.

)oever /e#ore they 'an pro$'e '$rrent the magnetos m$st /e

a't$ate as the engine 'ran!sha#t is rotate /y some other means.

To a''omp%ish this the air'ra#t /attery #$rnishes e%e'tri'a% poer tooperate a starter hi'h thro$gh a series o# gears rotates the engine

'ran!sha#t. This in t$rn a't$ates the armat$re o# the magneto to pro$'e

the spar!s #or ignition o# the #$e% in ea'h 'y%iner.

A#ter the engine starts the starter system is isengage an the /attery

no %onger 'ontri/$tes to the a't$a% operation o# the engine.

.

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01A2IGNITIONSYSTEM

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Most air'ra#t engines are e3$ippe ith a $a% ignition

system4to magnetos that s$pp%y e%e'tri'a% '$rrent to to

spar! p%$gs #or ea'h 'y%iner. One magneto system s$pp%ies

the '$rrent to one set o# p%$gs5 the se'on system s$pp%iesthe '$rrent to the other set o# p%$gs.

This is hy the ignition sit'h has #ive positions,

OFF 2 62EFT7 R 6RIG)T7 8OT) an START. (ith the

sit'h in the 2 or R position on%y one magneto s$pp%ies'$rrent an on%y one set o# spar! p%$gs #ires. (ith the sit'h

in the 8OT) position /oth magnetos s$pp%y '$rrent an

/oth sets o# spar! p%$gs #ire.

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In'rease sa#ety an e##i'ien'y.

I# one magneto system #ai%s the engine 'an operate on the

other system $nti% yo$ 'an ma!e a sa#e %aning.

To spar! p%$gs improve /$rning an 'om/$stion o# the

mi&t$re e%ivering improve per#orman'e.

A09ANTAGES OF 01A2 IGNITION

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2ASAR hi'h stans #or 2imite A$thority Spar! Avan'e Reg$%ator is the

#irst mi'ropro'essor /ase engine 'ontro% system approve /y the FAA #or

genera% aviation piston air'ra#t.

(ith the system operating in its a$tomati' moe 'y%iner hea temperat$re

mani#o% press$re an engine spee 6R+M7 are monitore /y the 2ASAR

'ontro%%er to esta/%ish an 'omman the optim$m ignition timing an spar!

energy to pro$'e ma&im$m tor3$e #rom the engine.

2ASAR has an inherent me'hani'a% magneto /a'!$p system that a$tomati'a%%y

ass$mes 'ontro% i# e%e'tri'a% poer is interr$pte or i# the mi'ropro'essor

ete'ts a system #a$%t.

L$S$R ELE#TRON!#

!N!T!ON S*STEM

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Insta%%ation re3$ires rep%a'ement o# stanar

magnetos ith 2asar magnetos a 2ASAR Contro%

8o& hi'h is mo$nte to the #irea%% a %o-vo%tage

'ontro% harness that 'arries the e%e'troni' signa%s/eteen the system 'omponents

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AIR 81S 9s 8EOING

8oeing an Air/$s are the /iggest Aero p%ane

man$#a't$ring 'ompanies in the or%$!RB)S

BEO!N

COM+ANY E1RO+EAN 8ASE0

COM+ANY

1S 8ASE0 COM+ANY

S+ECIA2IST A09ANCE0TEC)NO2OGY

8ETTER1N0ERSTAN0ING OFT)E (OR20(I0EMARKET

CONTRO2 SYSTEM F2Y 8Y (IRE F2Y 8Y (IRE

ENGINE T1R8O FANEG,RO22S ROYCE

T1R8O FANEG,RO22S ROYCE

CONTRO2 CO21MN SI0E STICKS YOKES

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$!RB)S BEO!N

AC)IE9EMENTS 2ARGEST AIR+2ANEFOR +ASSENGERS

SECON0 2ARGESTAIR+2ANE

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#O#%P!T

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