Fuel gas purge system having failure diagnostic function in...

Details Fuel gas purge system having failure diagnostic function in... Fuel gas purge system having failure diagnostic function in...

2005-03-01

2005-03-01

Vo, Hieu T. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C701S114000, C073S116070, C123S520000

Reexamination Certificate

active

06862516

ABSTRACT:
When detection of malfunction is interrupted for any reason, the integrated purge amount is cleared, and the next malfunction judgment conditions are determined satisfied when said integrated purge amount is not less than a second predetermined value shorter than said first predetermined value. The detection of malfunction is carried out again by purging the canister taking a time shorter than conventionally required. As a result, a fuel gas purge system having failure diagnostic function and being capable of improving frequency in detection of malfunction and preventing deterioration in drivability and emission is obtained.

REFERENCES:
patent: 5143035 (1992-09-01), Kayanuma
patent: 6308559 (2001-10-01), Davison
patent: 5-125997 (1993-05-01), None
patent: 9-21359 (1997-01-01), None
patent: 9-177617 (1997-07-01), None
patent: 11-22564 (1999-01-01), None
patent: 11-210569 (1999-08-01), None
patent: 2001-12315 (2001-01-01), None

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