Controller for internal combustion engine

Details Controller for internal combustion engine Controller for internal combustion engine

1989-04-07

1990-07-31

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Including cylinder pressure or temperature responsive means

123494, 123425, 123417, F02M 5100

Patent

active

049442716

ABSTRACT:
This invention provides a controller for controlling the combustion of an internal combustion engine. The controller comprises pressure sensors for detecting the pressure in a set of cylinders. The detected pressure profile in the cylinders is used to determine the combustion parameters, based on which the drive control parameters are determined. The combustion of the engine is normally controlled with those drive control parameters while the control is performed by means of predetermined parameters in the event of no combustion occurring. In determining the combustion parameters, the controller in accordance with this invention calibrates the pressure profile detected by the pressure sensor to eliminate the modulus and the offset of the pressure sensor from the pressure profile. The modulus and the offset are renewed on a proper basis to make up for the drawback that the modulus and the offset fluctuate in response to changes in temperature.

REFERENCES:
patent: 4660535 (1987-04-01), Asano
patent: 4732126 (1988-03-01), Ikeura et al.
patent: 4762105 (1988-08-01), Beyer et al.
patent: 4773375 (1988-09-01), Okino et al.
patent: 4819490 (1989-04-01), Isobe et al.

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