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Electronic Fuel Injection

Electronic Fuel Injection we;s úug fya;='

Carburetor u.ska we;sjk fodaI wjulr .eksu ioyd'

Emission Control ms<sno wjokh fhduq ùu'

Carburetor u.ska we;sjk fodaI

1. wjYH fõ,djg blaukska l%shd;aul fkdùu'

2. jeä fõ. j,os ksisf,i bkaOk jdhq ñY%Kh fkd,ìu'

3. mßud ld¾laIu;djh wvqh'

4. ieu is,skavrhlgu tl f,i bkaOk jdhq ñY%Kh fkd,eìu'

5. wvq o;a; m%udKhla wkqj bkaOk jdhq ñY%Kh iemhsu ksid mßir ÿIKh

jeäúu'

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by; fya;=ka uq,sl f,i Fuel Injection System tlla we;súug fya;= úh'

fuu l%uh c¾uka cd;slhka úiska fidhd.kakd ,oaols' fuh fudag¾ r:

j,g fhdod.eksug m%:u .=jka hdkd j, fhdodf.k we;s nj ioykah'

miqj fuh fudag¾ r: fl%a;%h ioyd fhdod.kakd ,os' uq,a ld,fhaos t;rï

id¾:l l%uhla fkdjqk;a fuh wojk úg fudag¾ r: fl%aI;%fha úYd, fmr,shla

we;slsßug iu;a úh'

Electronic Fuel Injection System uq,sl jYfhka m%Odk fldgia follska oelaúh

yel'

úoskq ,nka ia:dkh u;'

úoskq ,nk wdldrh u;'

úoskq ,nka ia:dkh u; j¾.SlrKh lsßu

Multi point injection (M.P.I)

Single point injection

Direct injection (G.D.I)

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Multi point injection

nyq,ju fudag¾ r:j, ndú;d

jkqfha fuu l%uhhs' fuys Engine ys ieu

is,skavrhlg Injector tl ne.ska iú ù

we;s w;r Inlet valve tl u;g úosu

fuu l%uh hgf;a isÿfõ'

Single point injection

fuh nyq,ju ndú;d fkdjk l%uhls'

fuysos isÿjkafka Throtle valve wdikakfha

Injector tlla we;s w;r th tl os.gu

úosug i,iaj ;sìuhs' fuu l%uh ioyd jeä

o;a; m%udKhla i,lkq fkd,nhs'

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Direct injection

fuh E.F.I l%ufha jeäoshqKq l, l%uhls' tkï fuysos ieu is,skavrhlgu

Injector tl ne.ska iújk w;r fuh Piston h u;gu úosu isÿlrhs' tysos Piston

o úfYaI yevhlska iukaú;h'

fuu l%uh jvd;a ndú;d lrkq ,nkafka Mitsubishi iud.u úisks' fuysos

Emission Control ;j;a wju lsßu ioyd E.G.R (Exhaust Gas Recirculation)

nú;d lr we;s w;r fuh bkaOk msßueiau w;ska fydo l%uhls' tkï fuys

G.D.I l%shd;aul jk úg bkaOk jdhq ñY%Kh 40:1 olajd Lean mixture f,i ,nd

fokq we;'

fuyso lsßu ioyd fjkuu Unite tlla we;s w;r Submersible pump g

wu;rj fjku High pressure petrol pump o Ndú;d fõ'

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úoskq ,nk wdldrh u; j¾.slrKh lsßu

úoskq ,nk wdldrh u; j¾. folg fnosh yel

Intermittent injection / Control Injection

(iúrdu úÿu)

Continuous Injection

(tldldß úÿu

Intermittent injection

fuh m%Odk f,i fldgia ;=klska iukaú; fõ tkï

1. Sequel Injection

2. Simultaneous Injection

3. Group Injection

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Sequel Injection

fuh úoskq ,nkafka Firing Oder tl wkqj fõ' tkï is,skavr 04 ys

tkacsula kï wjia:d y;rlos fjk fjku Fuel úosu isÿlrkq ,nhs'

Firing Oder 1,3,4,2 kï

Simultaneous Injection

fuh wjia:d follos úosu isÿlrkq ,nhs' tkï is,skavr y;rla kï

is,skavr y;rgu fojrlos úoskq ,nhs' fuh mßir ÿIKh wju jk l%uhls'

idudkHfhka fudag¾ r:hl Sequel yd Simultaneous hk folu ndú;d lr

we;s w;r Starting yd Sadden acceleration ysos Simultaneous l%uh ndú;d

fkdlrhs'

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Group Injection

fuu l%uh is,skavr jeä fudag¾ r:j, fhfoa fndfyda úg V Type Engine

ioyd nú;d lrkq ,nhs' fuysos Bank follg wjia:d follos Injection lsßu

isÿlrkq ,nhs'

Continuous Injection

fuh fndfyda úg Single point injection (Mono Injection) j, fhdok w;r

jdykh mk.ekajq fudfydf;a isg bkaOk úosu isÿlrkq ,nhs'

fuh l%uh K Jetronic Ndú;d jq fudag¾ r: j,o oelsh yelsh'

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Injectors

Injectors m%Odk f,i j¾. folla oelaúh yelsh

1. Top Feed Injectors

nyq,ju oelsh yels jkqfha fuu j¾.fha Injectors fõ' fuys

Injectors socket tl me;af;ka iúúug we; Fuel Injectors Wäka

meñfkhs'

2. Boottom Feed Injectors

fuh nyq,j oelsh fkdyels w;r t;rï Ndú;d fkdfõ' fuys

Injectors socket Injectors by,ska iïnkaO ú we;'

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E F I System ioyd o;a; ,nd.kakd wdldrh

fuu l%uh o;a; mokï lrf.k f.dvke.= l%uhla jk w;r o;a;

,nd.eksu ioyd Sensor ndú;d lrkq ,nhs' ish¿ o;a; ,ndf.k tjd md,kh

lsßug mß>Klhla we; th Electronic Control Unit (E C U) f,i yÿkajkq

,efí'

E F I moaO;sl we;s Sensor j¾.

Air flow sensor

Intake air temperature sensor

Barometric pressure sensor

Coolant temperature sensor

Throttle position sensor

Engine speed

Manifold vacuum sensor

Idler position sensor

Vehicle speed sensor

Crank angle sensor

Cam angle sensor

Knock sensor

O2 sensor / Lambda sensor

Battery voltage

Injectors signal

Fuel pump signal

Purge control solenoid valve

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Air Flow Sensor

fuh we;=,g .kakd jd;

mßudj ueK.eksu ioyd fhdod we;'

fuys Potency meter (Variable assister)

tlla ndú;d fõ'

idudkaHfhka by; ls j¾.h

uq,slj jd; mßudj muKla ukskq ,nhs fuys fodaI iy.; ;;ajhkao fõ'

fuh u.yrjd .eksug Air mass sensor ndú;d lrkq olakg ,efí'

Air mass sensor

1. Hot wire type

fuysos isÿjkqfha tl ksúug .;jk ld,h

wkqj t ;=,ska w;=,g .kakd jd; m%udKh

ueksuls' fuh by; l%uhg jdvd

id¾:lfõ'

2. Hot air film type

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Carmanwartec sensor

fuh Mitsubishi ys nyq,j ndú;d õ' fuu.ska isÿlrka ,nkafka ndOlhla

u.ska iq,s we;slr tu.ska .;a jdhqj Micro valve tlla wdOdrfhka uek .eksuls'

fuys Air temperature fjku ueksh hq;=h'

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Intake air temperature sensor

we;=,g .kakd jd;fha WIAK;ajh

ueksu fuu.ska isÿlrkq ,nhs'

Barometric pressure sensor

jdhqf.da,sh msvkh ueksu fuu.ska

isÿfõ'

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Coolant temperature sensor

tkacsu l%shdldß WIAK;ajhg

(Working temperature)meñK

;sfíoeh ne,su isÿlrKq ,nhs'

Throttle position sensor

Throttle valve jh wereKq

m%udKh ueksu isÿlrkq

,nhs'

Idler position sensor

Engine idler ;;ajfha

;sfíoehs yÿkd .eksu'

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Crank angle sensor

tkacsfuys m<uq fyda y;rjk

Piston tl yÿkd .eksu fuu.ska

isÿlrkq ,nhs'

Cam angle sensor

Compression TDC

yÿkd.eksu yd Firing

order mj;ajdf.k heu

fuu.ska isÿfõ'

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Knock sensor

Ignition advance

retard úu md,kh lrkq

,nhs' fuh Engine

block ys iúúh hq;=

w;r kshñ; Torque

tlg iúl, hq;=hs'

fuh úfYaI jq

Sensor la jk w;r fuh Piezoelectrio eliment (;srejdk úfYaIhla) u.ska ksmojd

we;s w;r lmamkhlos fuh ;=, úNj wka;rhla we;sfõ' Motronic l%uh ndú;

jk moaO;shl wksjd¾h f,i fuh ;sìh hq;=h'

O2 sensor / Lambda sensor

msgdr jdhqfõ O2 m%;sY;h ueksu

isÿlrkq ,nhs'

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Battery voltage

EFI moaO;sh l%shd;aul lsßug wjYH Odrdj ;sfíoehs mßlaId lsßu'

Purge control solenoid valve

pdflda,a leksiag¾ ys we;s Petrol jdIamh kej; Intake manifold tlg

,ndosu fuu.ska isÿlrkq ,efí' fuh Engine part load fyda Cruse control

wjia:dj, l%shd;aul fõ'

Rail pressure regulator

fuh EFI moaOd;shl we;s

iqúfYAIs ldrhhla bgqlrk

fldgils' fuu.ska flfrk m%Odk

ld¾Hh jkqfha Manifold pressure

yd Rail pressure w;r we;s mSvk

fjki kshñ; mßos ;nd.eksuhs'

tkï fuysos bkaOk úosug

n,mdk m%Odk ldrHh jkafka

Injector weß we;s ld,hhs( Injector drive time )' th w;r iïnkaOh mj;skqfha

Pressure regulator u;h'

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O2 sensor ys l%shdldß;ajh

fuho iqúfYaIs jq fldgils fuho ksßudKh ú we;af;a Piezo ceramic j,ks' fuu

Sensor l%shd;aul jk wjia:djl tu moaO;sh Close loop system tlla f,i

yeoskafõ'

Close loop system tl l%shd;aul fkdjk wjia:d

Full load

Cold start

First start

Sadden start