Unit and method for controlling internal combustion engines

Details Unit and method for controlling internal combustion engines Unit and method for controlling internal combustion engines

2004-07-08

2008-03-25

Huynh, Hai (Department: 3747)

Internal-combustion engines

Charge forming device

Including cylinder pressure or temperature responsive means

C123S406410

Reexamination Certificate

active

07347185

ABSTRACT:
An internal combustion engine (1) generates power by burning a mixture of fuel and air in a combustion chamber (3). The internal combustion engine (1) is provided with a crank angle sensor (14), an in-cylinder pressure sensor (15) detecting an in-cylinder pressure at the time when a crank angle detected by the crank angle sensor (14) reaches a predetermined angle, and an ECU (20). The ECU (20) calculates a combustion rate at predetermined timing based upon a control parameter which is a product of an in-cylinder pressure detected by the in-cylinder pressure sensor (15) and a value obtained by exponentiating an in-cylinder volume at the timing of detecting the in-cylinder pressure with a predetermined index, and corrects ignition timing by each ignition plug (7) so that the calculated combustion rate is equal to a target value.

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