Engine control system

Details Engine control system Engine control system

1989-10-24

1990-10-02

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Fuel injection system

123479, 123643, 36443111, F02D 4500, F02D 1100

Patent

active

049600923

ABSTRACT:
An engine control system comprises a crank angle sensor for generating reference signals, each outputted at a first predetermined rotational angle interval of the engine and position signals for controlling the ignition timing, an angle ignition signal generator for generating an angle ignition signal on the basis of the reference signal and the position signal, a clock signal generator for generating clock signals with a constant time period, a time ignition signal generator for generating a time ignition signal on the basis of the reference signal and the clock signal, abnormality detector for detecting abnormality in the position signals and outputting selecting means for selecting to output the angle ignition signals in a normal state and the time ignition signals when the abnormality in the position signals is detected, whereby the ignition timing is controlled in both normal and abnormal states of the position signal.

REFERENCES:
patent: 4485784 (1984-12-01), Fujii et al.
patent: 4494518 (1985-01-01), Katayama et al.
patent: 4644917 (1987-02-01), Yakuwa et al.
patent: 4658786 (1987-04-01), Foss et al.
patent: 4664082 (1987-05-01), Suzuki
patent: 4690123 (1987-09-01), Kimura et al.
patent: 4718395 (1988-01-01), Iwata
patent: 4788956 (1988-12-01), Suzuki et al.

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