Method and system for fuel vapor control

Details Method and system for fuel vapor control Method and system for fuel vapor control

2010-05-28

2011-11-15

Gimie, Mahmoud (Department: 3747)

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

C123S520000

Reexamination Certificate

active

08056540

ABSTRACT:
A method and system for fuel vapor control in a hybrid vehicle (HEV). The HEV fuel vapor recovery system includes a fuel tank isolation valve, which is normally closed to isolate storage of refueling from storage of diurnal vapors. The method for fuel vapor control includes selectively actuating the fuel tank isolation valve during interrelated routines for refueling, fuel vapor purging, and emission system leak detection diagnostics to improve regulation of pressure and vacuum the HEV fuel vapor recovery system.

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DeBastos, Timothy et al. “Method and System for Fuel Vapor Control,” U.S. Appl. No. 12/790,790, filed May 28, 2010, 58 pages.
Pearce, Russell Randall et al. “Method and System for Fuel Vapor Control,” U.S. Appl. No. 12/790,791, filed May 28, 2010, 58 pages.

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