Internal-combustion engines – Combustion chamber means combined with air-fuel mixture...
Patent
1992-11-05
1993-09-21
Wolfe, Willis R.
Internal-combustion engines
Combustion chamber means combined with air-fuel mixture...
123423, 123425, 123435, F02P 510, F02D 4110
Patent
active
052459691
ABSTRACT:
An object of the present invention is to provide an engine control device and an engine control method which can detect air quantities charged into the cylinders of the engine without delay, and the fuel injection quantity and ignition timing of the engine can be controlled with high accuracy. According to the present invention, when an engine is in steady state, charging efficiency calculating means calculates a fundamental charging efficiency for the suction air quantity of the engine from the difference between cylinder pressures which are detected in synchronization with two predetermined crank angles on the compression stroke, cylinder pressure sensors measure at least one cylinder pressure in synchronization with a crank angle on a suction stroke, averaging means averages cylinder pressures measured on the suction stroke, to provide an average value, correcting charging efficiency calculating means calculates a correcting charging efficiency from the variation in the variation of the average value averaging means in a predetermined period of time, and when the variation is equal to or larger a predetermined value, control means operates to correct the fuel injection quantity and ignition timing of the engine according to the value which is obtained by adding the correcting charging efficiency to the fundamental charging efficiency. The fuel injection quantity, the air/fuel ratio, and the ignition timing of the engine can be controlled with high accuracy.
REFERENCES:
patent: 4448163 (1984-05-01), Yoshida
patent: 4658789 (1987-04-01), Morita
patent: 4766545 (1988-08-01), Nagai
patent: 4875450 (1989-10-01), Yoshikawa et al.
patent: 4913118 (1990-04-01), Watanabe
patent: 4971009 (1990-11-01), Washino et al.
patent: 4996960 (1991-03-01), Nishiyama et al.
patent: 5027773 (1991-07-01), Shimomura et al.
patent: 5107813 (1992-04-01), Inoue et al.
patent: 5107814 (1992-04-01), Nishiyama et al.
patent: 5116356 (1992-05-01), Ohkubo et al.
Katashiba Hideaki
Nishiyama Ryoji
Mitsubishi Denki K.K.
Wolfe Willis R.
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