Jaguar XJ (X350). Service manual — part 824
Description and operation
Evaporative Emissions - VIN Range:
G00442->G45703
Item
Part Number
Description
1
—
Evaporative emission canister vent solenoid
2
—
Fuel tank pressure sensor
3
—
Evaporative emission canister
4
—
Evaporative emission canister purge valve
5
—
Evaporative emission canister purge valve resonator.
The evaporative emission fuel vapor management system consists of an evaporative emission
canister, evaporative emission canister purge valve and an evaporative emission canister purge valve
resonator. A combination of plastic pipes and rubber hoses connect the evaporative emission
canister to the fuel tank and the evaporative emission canister purge valve to the intake manifold.
Onboard refuel vapour recovery (ORVR).
The vehicle is fitted with an onboard refuel vapour recovery (ORVR) type fuel tank. During refuelling
all vapour is collected in the evaporative emission canister as well as in normal vehicle operations.
On Federal (USA) specification vehicles the fuel vapor management system uses a canister vent
solenoid and a fuel tank pressure sensor which are used during the engine management system on
board diagnostic routines.
When the evaporative emission canister purge valve is closed, the fuel tank is vented into the
evaporative emission canister through the fuel tank roll-over valve. The evaporative emission
www.
canister absorbs the fuel vapor and prevents the release of hydrocarbons into the atmosphere.
When the vapor evaporative emission canister purge valve is opened, the canister is exposed to the
intake manifold vacuum and the fuel vapor deposits are drawn into the manifold where they mix
with the incoming air/fuel charge.
The evaporative emission fuel vapor management system is controlled by the engine control module
according to calibrated data tables.
Evaporative Emissions - VIN Range:
G45704->G99999
Item
Part Number
Description
1
—
Evaporative emission canister purge valve
2
—
Evaporative emission canister
The evaporative emission fuel vapor management system consists of an evaporative emission
canister and an evaporative emission canister purge valve. A combination of plastic pipes and rubber
hoses connect the evaporative emission canister to the fuel tank and the evaporative emission
canister purge valve to the intake manifold.
www.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст