Control apparatus for internal combustion engine

Details Control apparatus for internal combustion engine Control apparatus for internal combustion engine

2007-04-16

2008-09-23

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

C123S520000

Reexamination Certificate

active

07428458

ABSTRACT:
A control apparatus for an internal combustion engine, where a calculated fuel injection quantity is corrected with a purge-air-concentration learnt value calculated by subjecting a purge air concentration to purge-air-concentration filtering. A filtering effect in the purge-air-concentration filtering is changed in the direction of enhancing exhaust gas purification, when the purge air concentration is thick and when the purge air concentration is thin, whereby an air/fuel ratio introduced into the internal combustion engine is precisely controlled to a target air/fuel ratio so as to enhance the exhaust gas purification.

REFERENCES:
patent: 5626122 (1997-05-01), Azuma
patent: 6880541 (2005-04-01), Hanazaki et al.
patent: 7171960 (2007-02-01), Hagari
patent: 8-261038 (1996-10-01), None
patent: 2005-98137 (2005-04-01), None
patent: 2006-125304 (2006-05-01), None

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