9-5 SE Wagon (9600) V6-3.0L Turbo (B308) (2001)
Evaporative Emission Control Canister: Description and Operation
Evaporative Emission Canister
The evaporative emission canister is located on top of the tank and comprises a canister filled with special carbon pellets. Carbon pellets are used to
obtain as little back pressure as possible from the emission canister. Evaporated hydrocarbons from the tank pass through a line to the emission canister.
When refuelling, the hydrocarbons and air from the tank are evacuated via a line to the emission canister, which absorbs the hydrocarbons.
Separate lines connect the evaporative emission canister with the fuel tank, EVAP purge valve and shut-off valve. When the engine starts, air is drawn in
through the shut-off valve to the emission canister and then via the purge valve into the intake manifold. The hydrocarbons a taken with it and are burned
in the engine.
The evaporative emission canister absorbs approx. 80 g hydrocarbon for each full tank. The emission canister is purged while the car is being driven, the
time it takes depends on the driving. The emission canister can absorb a maximum of approx. 120 g hydrocarbon.
Fuel Tank