Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1979-10-09
1981-04-14
Myhre, Charles J.
Internal-combustion engines
Charge forming device
Fuel injection system
123445, F02M 5100
Patent
active
042613140
ABSTRACT:
A fuel injection control system utilizes a microprocessor to calculate and generate one or more logic control signals that determine the duration of the energization time of intermittently energized electromagnetic fuel injectors. The microprocessor has a number of inputs which are indicative of engine operation, such as intake manifold vacuum, engine crankshaft position and speed, engine operating temperature, and perhaps less important parameters. During engine cranking most of these parameters are not available. The invention overcomes this problem with the use of an analog computer that shares circuitry used by the microprocessor when the microprocessor is either in a default mode of operation or when the engine is being cranked.
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patent: 3906205 (1975-09-01), Yoshida et al.
patent: 3969614 (1976-07-01), Moyer et al.
patent: 4089317 (1978-05-01), Drews et al.
patent: 4099495 (1978-07-01), Kiencke et al.
patent: 4116169 (1978-09-01), Krupp et al.
patent: 4184460 (1980-01-01), Harada et al.
patent: 4199812 (1980-04-01), Klotzner et al.
Abolins Peter
Ford Motor Company
Myhre Charles J.
Nelli R. A.
Sadler Clifford L.
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