Evaporative (Evap) Emission Control System - Toyota 22R-E Service Manual

EVAPORATIVE (EVAP) EMISSION CONTROL SYSTEM

To reduce HC emission, evaporated fuel from the fuel tank is routed through the charcoal canister to the intake manifold for
combustion in the cylinders. '
Engine
Coolant
TVV
Temp.
Below
CLOSED
35SC (95SF)
Above
OPEN
54SC (129SF)
High pressure
in tank
High vacuum
in tank
Check Valve is Charcoal Canister
Throttle Valve
Opening
Positioned below
CLOSED
purge port
Positioned above
OPEN
purge port
ENGINE – EMISSION CONTROL SYSTEMS
Check
Valve in
Cap
OPEN
CLOSED CLOSED
CLOSED
OPEN OPEN
EG2–145
Evaporated Fuel (HC)
HC from tank is absorbed
in the canister.
HC from canister is led into
air intake manifold.
HC from tank is absorbed
in the canister.
(Air is led into the fuel tank.)