A vapor canister for a vehicle evaporative emissions control system comprises a canister housing defining an internal volume for receiving therein one or more volumes of adsorbent; a fuel vapor inlet port for connecting the canister to a fuel tank; a vent port for intake of fresh air into the canister; a purge port for withdrawing fuel vapors from the canister; and a pump integrated with the canister housing. The integrated pump is actuated to provide an overpressure or underpressure in the canister. The integrated pump can be used for various operating modes, such as e.g. canister purging, leak detection diagnostic, refueling or engine shut down.
Vapor canister and evaporative emissions control system for a vehicle
2019-12-18
Patent
Electronic Resource
English
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