Emission
s Control s
Exhaus t Emission s Control s
Th e exhaus t emission s control s
includ e thre e systems : PGM-FI ,
Ignitio n Timin g Contro l an d Thre e
Wa y Catalyti c Converter . Thes e
thre e system s wor k togethe r t o
contro l th e engine' s combustio n an d
minimiz e th e amoun t o f HC , CO , an d
NO x tha t come s ou t th e tailpipe . Th e
exhaus t emission s contro l system s
ar e separat e fro m th e crankcas e an d
evaporativ e emission s contro l
systems .
PGM-FI
System
Th e PGM-F I Syste m use s sequentia l
multipor t fue l injection .
I t ha s thre e subsystems : Ai r Intake ,
Engin e Control , an d Fue l Control .
Th e Engin e Contro l Modul e (ECM )
o r th e Powertrai n Contro l Modul e
(PCM ) use s variou s sensor s t o
determin e ho w muc h ai r i s goin g
int o th e engine . I t the n control s ho w
muc h fue l t o injec t unde r al l operat -
in g conditions .
Ignition Timing Control System
Thi s syste m constantl y adjust s th e
ignitio n timing , reducin g th e amoun t
o f HC , C O an d NO x produced .
Three Way Catalytic Converter
Th e thre e wa y catalyti c converte r i s
i n th e exhaus t system . Throug h
chemica l reactions , i t convert s HC ,
CO , an d NO x in th e engine' s exhaus t
t o carbo n dioxid e (CO 2) , dinitroge n
(N 2) , an d wate r vapor . Replacemen
t Part s
Th e emission s contro l system s ar e
designe d an d certifie d to wor k to -
gethe r i n reducin g emission s t o
level s tha t compl y wit h th e Clea n Ai r
Act . T o mak e sur e th e emission s
remai n low , yo u shoul d us e onl y ne w
genuin e Hond a replacemen t part s o r
thei r equivalen t fo r repairs . Usin g
lowe r qualit y part s ma y increas e th e
emission s fro m you r vehicle .
Th e emission s contro l system s ar e
covere d b y warrantie s separat e fro m
th e res t o f you r vehicle . Rea d you r
warrant y manua l fo r mor e informa -
tion .
Technica l Informatio n
