Controller of internal combustion engine

Details Controller of internal combustion engine Controller of internal combustion engine

2006-06-27

2006-06-27

Gimie, Mahmoud (Department: 3747)

Internal-combustion engines

Spark ignition timing control

Electronic control

C123S568140

Reexamination Certificate

active

07066146

ABSTRACT:
A device for controlling an internal combustion engine, comprising a variable valve mechanism for varying opening areas (valve lift) or the working angles (valve-opening periods) of at least either the intake valves or the exhaust valves, wherein a pressure in the cylinder is calculated based on the opening area or the working angle of at least either the intake valve or the exhaust valve varied by the variable valve mechanism, and the internal combustion engine is controlled based on the pressure in the cylinder. Upon calculating the pressure in the cylinder based on the opening areas or the working angles of the intake and exhaust valves, it is possible to more suitably control the internal combustion engine based not only upon the peak combustion pressure in the cylinder like when a combustion pressure sensor is used but also upon a pressure in the cylinder at a moment other than the peak combustion pressure.

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