Patent ID: 8132560

Claim:
A method for combusting a vapor of a fuel accumulated in an adsorbent canister in a vehicle, the vehicle having an engine and a fuel tank coupled to the adsorbent canister, the method comprising: during a first operating condition including a higher availability of compressed air, metering the compressed air from a first air source, and flowing the metered, compressed air through the adsorbent canister along a first flow path and flowing compressed air from the first air source through a crankcase to yield a crankcase effluent enriched in the vapor, and combining the crankcase effluent with an effluent from the adsorbent canister also enriched in the vapor; during a second operating condition including a lower availability of compressed air, flowing air from a second air source through the adsorbent canister; and during the first and second operating conditions, venting the fuel tank to an intake of the engine and flowing effluent enriched in the vapor from the adsorbent canister to the intake of the engine.