Method of controlling an internal combustion engine

Details Method of controlling an internal combustion engine Method of controlling an internal combustion engine

1991-03-06

1992-08-25

Cross, E. Rollins

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9011, 123435, F01L 134, F01L 904

Patent

active

051409550

ABSTRACT:
A method of controlling an internal combustion engine having at least one intake valve comprises the steps of (1) detecting a demand of the driver to the engine, (2) detecting operating parameters of the engine including engine rotational speed, and (3) setting the timing of closing the at least one intake valve to timing which makes output of the engine the maximum at the detected engine rotational speed, when it is detected that the driver demands that the maximum output of the engine should be obtained in at least a predetermined operating region of the engine. In another form of the invention, when the knocking of the engine is detected, the timing of closing the at least one intake valve is advanced or retarded by a predetermined amount from timing applied before occurrence of the knocking such that the engine has intake efficiency thereof lowered, at least in a predetermined operating region of the engine determined based on at least the detected demand of the driver to the engine and the detected engine rotational speed, and the advancing or retarding of the timing is continued even after the knocking of the engine ceases to occur.

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