EMISSION SYSTEM OUTLINE [F2]

id011694100100

•  The emission system consists of a TWC for exhaust gas purification, PCV valve for blowby gas recirculation, a purge solenoid valve, a charcoal canister, a evaporative gas check valve (two-way), and rollover valves for evaporative emission control.

System

Main component

Purpose
Exhaust purification system
CIS (air/fuel ratio control)
PCM, O2S, etc.
•  To reduce CO and HC in exhaust gas
•  To improve purification ratio of catalytic converter
Catalyst system
TWC
To reduce CO, HC, and NOX in exhaust gas
Positive crankcase ventilation (PCV) system
PCV valve
To prevent blowby gas from escaping into atmosphere
Fuel evaporative system
Purge solenoid valve, charcoal canister, rollover valve, evaporative gas check valve (two-way), fuel-filler cap, check valve (two-way)*1, evaporative chamber*1
To prevent evaporative gas from escaping into atmosphere

*1  :Without box