Control apparatus for controlling the amount of intake air...

Details Control apparatus for controlling the amount of intake air... Control apparatus for controlling the amount of intake air...

2006-01-10

2006-01-10

Wolfe, Jr., Willis R. (Department: 3747)

Internal-combustion engines

Engine speed regulator

Idle speed control

C123S339250, C123S572000, C123S396000

Reexamination Certificate

active

06983735

ABSTRACT:
A control for controlling an intake air into an engine is provided. A control valve for adjusting an amount of the intake air into the engine is provided. A desired opening degree of a control valve provided in an intake air passage into the engine is determined based on a clogging coefficient. The clogging coefficient indicates a degree of clogging of the intake air passage. An opening degree of the control valve is controlled to converge to the desired opening degree. The clogging coefficient is updated based on a feedback correction amount for feedback controlling a rotational speed of the engine during idling operation. If a leakage in a blow-by gas passage that is connected between the engine and the intake air passage is detected, the update of the clogging coefficient is prohibited.

REFERENCES:
patent: 5024196 (1991-06-01), Ohuchi
patent: 6016787 (2000-01-01), Sakai et al.
patent: 6098603 (2000-08-01), Maegawa et al.
patent: 6247464 (2001-06-01), Maegawa et al.
patent: 6338329 (2002-01-01), Maegawa et al.
patent: 2558153 (1997-05-01), None
patent: 2002-130035 (2002-05-01), None

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