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Jaguar XJ (X350). Manual - part 824

Description and operation

Evaporative Emissions - VIN Range:
G00442->G45703

Item

Part Number

Description

—

Evaporative emission canister vent solenoid

—

Fuel tank pressure sensor

—

Evaporative emission canister

—

Evaporative emission canister purge valve

—

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

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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