Toyota Camry Manual page 1982

EMISSION CONTROL SYSTEM
PURPOSE
The emission control systems are installed to reduce the amount of CO, HC and NOx exhausted from the
engine ((3), (4), (5) and (6)), to prevent the atmospheric release of blow–by gas–containing HC (1) and evap-
orated fuel containing HC being released from the fuel tank (2).
The function of each system is shown in these table.
System
(1) Positive Crankcase Ventilation
(2) Evaporative Emission Control
(3) Exhaust Gas Recirculation
(4) Warm Up Three–Way Catalytic Converter
(5) Three–Way Catalytic Converter
(6) Sequential Multiport Fuel Injection*
Remark: * For inspection and repair of the SFI system, refer to the SF section of this manual.
EMISSION CONTROL (1MZ–FE)
Abbreviation
PCV
EVAP
EGR
WU–TWC
TWC
SFI
– EMISSION CONTROL SYSTEM
Reduces HC
Reduces evaporated HC
Reduces NOx
Reduces HC, CO and NOx
Reduces HC, CO and NOx
Injects a precisely timed, optimum amount of fuel for reduced
exhaust emissions
Author :
Function
Date :
EC–1
EC01U–03
1416