Description
The fuel vapor recovery system works on the principle of using a container filled with activated carbon. Fuel vapors come from the fuel tank to the fuel vapors receiving tank (with activated carbon) during engine shutdown. When the engine is running, fuel vapor is displaced from the carbon element by the incoming air stream and fed into the intake manifold for subsequent combustion in the cylinders. Gasoline vapors come from the fuel tank line into the tube marked TANK (TANK). These vapors are absorbed by the coal.
Tank purge is regulated by the engine control unit (ECM) when the engine is running for a certain period of time. Air is introduced into the tank and mixed with vapors. After that, the air-fuel mixture enters the intake manifold.
The ECM closes the power circuit to the EVAP exhaust purge solenoid valve. This valve has pulse width modulation (PWM) those. turns on and off several times a second. The EVAP canister purge PWM sleep mode varies depending on operating conditions determined by airflow mass, fuel trim, and intake air temperature.
Unsatisfactory idling, jamming and poor handling may occur under the following conditions:
- EVAP reservoir purge solenoid valve inoperable; tank damage;
- rupture, cracks in hoses, incorrect connection of tubes.
Evaporative Emission System Capacity
Evaporation tank (EVAP) is a device with the inclusion of charcoal pellets. The EVAP Evaporation Tank is used to store fuel vapor from the fuel tank. Upon receiving the necessary conditions, the engine control unit activates the EVAP reservoir purge solenoid, which allows fuel vapor to be directed into the engine cylinders and burned.
Withdrawal
Attention: the elements of the system may contain hot vapours. Avoid open flames and do not smoke nearby.
1. Remove the canister evaporator hoses.
2. Remove the bolt securing the EVAP reservoir flange to the vehicle.
4. Remove the EVAP vapor reservoir.
Installation
1. Place the can of the evaporative emission system in the slide, install it in place and tighten the flange mounting bolt to 20 Nm.
2. Connect the hoses.