Control apparatus for internal combustion engine

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

2005-06-28

2005-06-28

Huynh, Hai (Department: 3747)

Internal-combustion engines

Spark ignition timing control

Electronic control

C123S406450, C123S406330, C123S090150, C123S568140

Reexamination Certificate

active

06910461

ABSTRACT:
Based on results of a knock control for adjusting ignition timing in accordance with the occurrence of knocking, an electronic control unit computes deposit required ignition timing akgrg, which is ignition timing determined by taking adhesion of deposits in an internal combustion engine into consideration. Based on the deposit required ignition timing akgrg, the electronic control unit reduces a vvt allowable variable range of a target VVT advancement amount, which is a control target value of a variable valve timing mechanism. The electronic control unit corrects a required ignition timing based on the actual VVT advancement amount vt, which is chanted according to the reduction of the allowable variable range of the target VVT advancement amount. As a result, problems resulting from the adhesion of deposits are effectively avoided.

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U.S. Appl. No. 10/745,555, filed Jan. 12, 2004, Tanei et al.

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