Evaporative fuel control system for internal combustion engine

Details Evaporative fuel control system for internal combustion engine Evaporative fuel control system for internal combustion engine

2005-12-13

2005-12-13

Mohanty, Bibhu (Department: 3747)

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

Reexamination Certificate

active

06973924

ABSTRACT:
An evaporative fuel control system for an internal combustion engine having improved leak check precision and decreased false check results.The system provides a controller including a leak check control section to operate the leak check system, a refuel detecting section to determine whether refueling of the fuel tank has occurred, a purge quantity totalizing section to add up the quantity of purge during operation of the engine, and a leak check stop section to prevent the leak check until the total purge quantity that is added by the purge quantity totalizing section during operation of the engine is larger than a predetermined value if refueling is determined by the refuel check section.

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patent: 6789523 (2004-09-01), Oki et al.
patent: 6854452 (2005-02-01), Morinaga et al.
patent: 11-336620 (1999-12-01), None
patent: 2002-256988 (2002-09-01), None
patent: 2003-120437 (2003-04-01), None

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