2000 MITSUBISHI PAJERO PININ Workshop Manual




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G EN ER AL IN FO RM ATIO N
T he e va pora tiv e e m is sio n c o ntr o l s yste m p re ve nts
f u el v a pours g enera te d in th e fu el ta nk fr o m e sca pin g
i n to th e a tm osp here .
F uel v a pours fr o m th e fu el ta nk flo w th ro ugh th e
f u el ta nk p re ssu re c o ntr o l v a lv e a nd v a pour
p ip e/h ose to b e s to re d te m pora rily in th e c a nis te r.
W hen d riv in g th e v e hic le , fu el v a pours s to re d in
t h e c a nis te r flo w th ro ugh th e p urg e s o le noid a nd
p urg e p ort a nd g o in to th e in ta ke m anif o ld to b e s
e nt to th e c o m bustio n c h am ber.
W hen th e e ngin e c o ola nt te m pera tu re is lo w o r w hen
t h e in ta ke a ir q uantit y is s m all ( w hen th e e ngin e
i s a t id le , fo r e xa m ple ), th e e ngin e c o ntr o l u nit tu rn s
t h e p urg e s o le noid o ff to s h ut o ff th e fu el v a pour
f lo w to th e in ta ke m anif o ld .
T his d oes n ot o nly in su re th e d riv e abilit y w hen th e
e ngin e is c o ld o r r u nnin g u nder lo w lo ad b ut a ls o
s ta biliz e th e e m is sio n le ve l.
S YSTE M D IA G RAM S
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C O M PO NEN T L O CATIO N

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7-1 3 E
XH AUST G AS R EC IR CULA TIO N ( E G R) S YSTE M
G EN ER AL IN FO RM ATIO N
T he e xh aust g as r e cir c u la tio n ( E G R) s yste m lo w ers
t h e n it r o gen o xid e ( N O x) e m is sio n le ve l. W hen t h e
a ir /fu el m ix tu re c o m bustio n te m pera tu re is h ig h, a
l a rg e q uantit y o f n it r o gen o xid es ( N O x) is g enera te d
i n th e c o m bustio n c h am ber. T here fo re , th is s yste m
r e cir c u la te s p art o f e m is sio n g as fr o m th e e xh aust p
ort o f th e c ylin der h ead to th e c o m bustio n c h am ber
t h ro ugh th e in ta ke m anif o ld to d ecre ase th e a ir /fu el
m ix tu re c o m bustio n te m pera tu re , r e su lt in g in
r e ductio n o f N O x.
T he E G R flo w r a te is c o ntr o lle d b y th e E G R v a lv e
s o a s n ot to d ecre ase th e d riv e abilit y .
O PER ATIO N
T he E G R v a lv e is b ein g c lo se d a nd d ose n ot
r e cir c u la te e xh aust g ase s u nder o ne o f th e fo llo w in g
c o ndit io ns. O th erw is e , th e E G R v a lv e is o pened
a nd r e cir c u la te e xh aust g ase s.
The e ngin e c o ola nt te m pera tu re is lo w .
The e ngin e is a t id le .
The th ro ttle v a lv e is w id ely o pened.
S YSTE M D IA G RAM

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R EM OVA L A ND IN STA LLA TIO N 2
4 N m 1
9 N m
1 0 7
6
R em oval s te p s

A 1. Fuel p um p p ro te cto r
2 . E G R v a lv e h arn ess c o nnecto r
c o nnectio n
3 . W ate r h ose
4 . W ate r p ip e
5 . W ate r h ose 6
. E G R v a lv e a nd s u pport a sse m bly
7 . E G R p ip e g aske t
8 . E G R v a lv e
9 . E G R v a lv e g aske t
1 0. W ate r h ose
R EM OVA L S ER VIC E P O IN T

A FU EL P U M P P R O TE C TO R R EM OVA L
L if t u p th e tr a nsm is sio n w it h a ja ck to c re ate c le ara nce b etw een
t h e e ngin e a nd fr o nt d eck, a nd th en r e m ove th e fu el p um p
p ro te cto r.