Internal-combustion engines – Combustion chamber means combined with air-fuel mixture...
Patent
1991-04-19
1992-04-07
Nelli, Raymond A.
Internal-combustion engines
Combustion chamber means combined with air-fuel mixture...
F02P 514
Patent
active
051017881
ABSTRACT:
An internal-combustion engine control device includes a pressure sensing device for sensing a cylinder pressure of the internal-combustion engine, a crank angle sensing device for sensing a crank angle, an indicated mean effective pressure computing device for computing the illustrated mean effective pressure from the output of the pressure sensing device and the output of the crank angle sensing device, an indicated device effective pressure averaging means for averaging the output of the indicated mean effective pressure computing device, a load sensing device for sensing a load of the internal-combustion engine, a speed sensing device for sensing an engine speed of the internal-combustion engine from the output of the crank angle sensing device, an operating condition judging device for judging the operating condition of the internal-combustion engine from the output of the load sensing device and the output of the speed sensing device, and a control device for controlling at least one of air-fuel ratio and an ignition timing so that the mean value of an the indicated mean effective pressure will become a maximum value, under a designated operating condition judged by the operating condition judging device. Even when engine components have variations or are subjected to a change with time or a change in environmental conditions, the engine can be operated at all times with optimum air-fuel ration and optimum ignition timing. That is, the control device insures improved output torque, low fuel consumption, improved responsiveness, and operating stability.
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Demizu Akira
Inoue Hitoshi
Mitsubishi Denki K.K.
Nelli Raymond A.
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