Fuel vapor treatment

Details Fuel vapor treatment Fuel vapor treatment

2007-12-11

2008-07-01

Solis, Erick (Department: 3747)

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

C123S520000

Reexamination Certificate

active

07392800

ABSTRACT:
A fuel vapor treatment system includes a canister containing an adsorbent, a detector detecting a concentration of a fuel vapor, a purge passage for introducing the mixture gas into an engine, and an ECU which controls a purge based on a detected fuel vapor condition quantity and learns a fuel vapor concentration. If a difference between a learned concentration and a detection concentration is not less than a specified value, the ECU performs a purge control based on the learned concentration prior to a purge control based on the detection concentration.

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patent: 7302933 (2007-12-01), Kerns
patent: 2004/0261765 (2004-12-01), Osanai
patent: 2005/0056262 (2005-03-01), Osanai
patent: 2006/0042605 (2006-03-01), Amano et al.
patent: 6-101534 (1994-04-01), None

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