19
FUEL SYSTEM
Non - evaporative loss equipment
1.
2.
3.
Throttle disc
Fuel cut-off valve
Two way valve
4. Charcoal canister
5. Purge control valve
6. Fuel filler cap
7. ECM
8. One way valve
Charcoal canister
Purge control valve
A charcoal canister is used for the temporary storage
of fuel vapour from the fuel tank until the vapour can
be purged from the canister into the engine and
burned.
A purge control valve is operated by the ECM The
valve remains closed when the engine is cold and at
idling speed to protect engine tune and catalyst
performance. If the charcoal canister was purged
during cold running or at idling speed, the additional
enrichment in fuel mixture would delay catalyst light
off time and cause erratic idle. When the engine
temperature is above 75°C, the purge control valve
will be operational (modulated ON and OFF)
The charcoal canister is purged when the purge
control valve is open, fresh air is drawn through the
purge air hose, through the charcoal canister and into
a port in the inlet manifold.
whenever the engine speed is above approximately
1600
rev/min. When the purge valve is opened, fuel
vapour from the charcoal canister is drawn into the
inlet manifold for combustion.
6
DESCRIPTION AND OPERATION
| Categories | Range Rover |
|---|---|
| Tags | Land Rover |
| Model Year | 1998 |
| Download File |
|
| Document Type | Workshop Manual |
| Language | English |
| Product Brand | Land Rover |
| Document File Type | |
| Publisher | landrover.com |
| Wikipedia's Page | http://en.wikipedia.org/wiki/Land_Rover |
| Copyright | Attribution Non-commercial |
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