Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1992-06-16
1993-08-31
Wolfe, Willis R.
Internal-combustion engines
Charge forming device
Fuel injection system
123476, 123617, F02P 515, F02P 7067, F02D 4126
Patent
active
052399621
ABSTRACT:
An engine control apparatus for a multi-cylinder engine is provided which precisely controls a plurality of groups of cylinders on the basis of a plurality of reference position sensors, each of which senses a reference crank position of a corresponding group of cylinders. The apparatus generates control signals for controlling the plurality of groups of cylinders even in the event of a failure of any one of the sensors thus providing a fail-safe operation. The sensors generate output signals, in synchronization with the crankshaft, which are feed to an OR gate which generates a single output signal each time a signal is received from the sensors. The output signal from the OR gate is feed to an interrupt terminal of a microcomputer whereupon the latter starts an interrupt processing which identifies the group of cylinders corresponding to the output signal and generates control signals. In another form, a rotation sensor successively senses a rotational angle of a ring gear which rotates in synchronism with the crankshaft and generates a pulse signal which is counted by a counter. The counter generates an output signal indicative of a counted number. The microcomputer generates control signals based upon the output signal of the counter as well as the output signals from the sensors. In the event of a failure of any one of the sensors, the microcomputer generates control signals based on the output signals from the other normally operating sensors.
REFERENCES:
patent: 4338903 (1982-07-01), Bolinger
patent: 4457286 (1984-07-01), Katayama et al.
patent: 4485784 (1984-12-01), Fujii et al.
patent: 4494518 (1985-01-01), Katayama et al.
patent: 4499875 (1985-02-01), Katayama et al.
patent: 4664092 (1987-05-01), Kaufmann
patent: 4788956 (1988-12-01), Suzuki et al.
Fukui Wataru
Umemoto Hideki
Mitsubishi Denki & Kabushiki Kaisha
Wolfe Willis R.
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