Internal-combustion engines – Engine speed regulator – Idle speed control
Reexamination Certificate
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.
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patent: 2002-130035 (2002-05-01), None
Nagashima Masaaki
Oie Naoki
Takagi Yasuo
Toyoshima Hirokazu
Arent & Fox PLLC
Honda Motor Co. Ltd.
Wolfe, Jr. Willis R.
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