System Purpose - Volkswagen Taro 1989 Workshop Manual

E M I S S I O N C O N T R O L S Y S T E M
SYSTEM PURPOSE
System
Positive crankcase ventilation
Thronle positioner
Spark delay
Air suction
Auxiliary system
1
Fuel evaporation control
2
Automat~c hot air ~ntake
3
Choke breaker
4
Auxlliaty accelerat~on pump
5 Deceieratlon fuel cut-out
PCV
TP
SD
AS
EVAP
HA1
CB
AAP
Reduces gas leakage from the
crankcase (HC)
Reduces HC and CO
Reduces NOx and HC
Reduces HC and CO
Improves re starting
lmproves runnlng when the englne
IS
cold
lmproves
running
when the englne
Is
cold
Improves
running
when the englne
IS
cold
Prevents alter burn~ng