Ford Global Technolgoies, LLC

Chris Kragh

Scott Alan Bohr

Michael G Heim

James Michael Kerns

Mark W Peters

Russell Randall Pearce

Timothy DeBastos

Dennis S Yang

Methods and systems are provided for operating a fuel vapor recovery system having a fuel tank isolation valve coupled between a fuel tank and a canister. Fuel vapors are purged from the fuel tank to a canister buffer over a plurality of purge pulses. The pulses are adjusted based on the buffer capacity, a purge flow rate, and a fuel tank pressure to improve control of canister loading and reduce air-to-fuel ratio disturbances.

Method and system for fuel vapor control

A hydrocarbon canister purge system includes a hydrocarbon storage canister, a fuel tank disposed in fluid communication with the hydrocarbon storage canister, an engine disposed in fluid communication with the hydrocarbon storage canister, a hydrocarbon sensor provided in the hydrocarbon storage canister and a controller disposed in signal-receiving communication with the hydrocarbon sensor and in signal-transmitting communication with the engine.

Hydrocarbon storage canister purge system and method

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Commerce Township, MI, United States of America

Chris Kragh