Chery QQ6 Service Manual download pdf (Page 23)

pressure difference between the inlet and the outlet of the canister control valve. The canister control

valve will be closed when there is not any electric pulse.

12.4 Installation attentions

See above installation drawing for connection among canister control valve, carbon canister and

intake manifold.

l In order to avoid transfer of solid borne noise, floating installation of the canister control valve

on the hose is recommended.

l During installation, make sure that the airflow direction meets the specification.

l Appropriate measures such as filtering and purge etc. must be taken to prevent such foreign

material as particles from entry into the canister control valve from carbon canister or hose.

It is recommended that a corresponding protective strainer (size of grid<50µm) should be

installed on outlet of carbon canister.

12.5. Failure effects and judgment method

l Failure effects: Failure of functions etc.

Reasons for general failure: corrosion or poor sealing performance etc. due to entry of foreign

material into inside of the valve.

l Maintenance precautions:

1. During installation, make sure that the airflow direction meets the specification;

2. In case of control valve failure due to black particle inside the valve body, when replacement

of the control valve is required, check the status of the canister;

3. During maintenance, try to avoid entry of such liquid as water and oil etc. into the valve;

4. In order to avoid transfer of solid borne noise, floating installation of the canister control

valve on the hose is recommended.

87# pin of main relay

anister control valve

1 From fuel tank

2 Canister

3 Atmosphere

4 Canister control valve

5 To intake manifold

6 Throttle

Cross-section view of

canister control valve

Installation drawing of canister control valve

ΔP

is the difference between environmental pressure

Pu and intake manifold pressure Ps

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 84 85

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Chery QQ6 Service Manual Page 23