Patent ID: 7562651

Claim:
A vapor canister having an integrated evaporative emission canister purge actuation monitoring system for a motor vehicle having an engine, and at least one control unit, said vapor canister comprising: a plurality of sidewalls defining a housing for said vapor canister, a valve body formed integrally on said housing of said vapor canister and a cover mounted to said valve body so as to define a vent chamber between the cover and the valve body; said integrated valve body having a main flow passage and a canister port adapted to establish fluid communication between the vapor canister and said main flow passage; an air filter assembly disposed adjacent said valve body on said housing and providing fluid communication between said main flow passage and the ambient air; a first one-way umbrella valve mounted to said integrated valve body and responsive to a predetermined positive pressure in said main flow passage to control the flow of fluid from the vapor canister to the ambient air through said vent chamber and said air filter assembly; and a second one-way umbrella valve mounted to said integrated valve body and responsive to a predetermined negative pressure in said main flow passage to control the flow of ambient air through said air filter assembly and said vent chamber and through said main flow passage and said canister port.