Control device for an internal combustion engine

Details Control device for an internal combustion engine Control device for an internal combustion engine

2007-12-28

2009-02-03

Kwon, John T (Department: 3747)

Internal-combustion engines

Engine speed regulator

By changing valve lift

C123S090120, C123S090310, C123S321000

Reexamination Certificate

active

07484497

ABSTRACT:
Provided is a control device for an internal combustion engine, including a crank angle sensor, a cam angle sensor, a real phase angle detector for detecting a real phase angle of a cam shaft based on a detection signal of the sensors, a target phase angle setting unit including a temperature parameter and battery voltage, for setting a target phase angle of the cam shaft based on an operating state of the internal combustion engine, and a phase angle feedback control unit for conducting feedback control operation so that the real phase angle coincides with the target phase angle, and for calculating an operation quantity to a hydraulically controlled solenoid valve, in which the feedback control unit sets an integral term initial value when starting the feedback control operation according to the temperature parameter, corrects a control correction quantity by the battery voltage, and outputs the operation quantity to the solenoid valve.

REFERENCES:
patent: 6691022 (2004-02-01), Takemura et al.
patent: 6792901 (2004-09-01), Sugiyama et al.
patent: 6971350 (2005-12-01), Akasaka et al.
patent: 7403849 (2008-07-01), Watanabe et al.
patent: 2003/0041823 (2003-03-01), Takemura et al.
patent: 2003/0196622 (2003-10-01), Wada et al.
patent: 2004/0083999 (2004-05-01), Miyakoshi et al.
patent: 2005/0188931 (2005-09-01), Akasaka et al.
patent: 2006/0207534 (2006-09-01), Machida
patent: 2001-234765 (2001-08-01), None

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