Ignition timing control apparatus

Details Ignition timing control apparatus Ignition timing control apparatus

1992-04-30

1993-05-25

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Fuel injection system

F02P 7067, F02P 1100

Patent

active

052130797

ABSTRACT:
An ignition timing control device for an internal combustion engine includes an ignition signal coil for producing a first pulse signal in synchronism with the revolution of the engine and in correspondence to a predetermined crank angle position, a crank angle sensor for producing a second pulse signal in synchronism with the revolution of the crank, the second pulse signal having a greater frequency than said first pulse signal, and a microcomputer for performing an ignition control of the engine by detecting the crank angle on the basis of the first and second pulse signals. The microcomputer is adapted to perform an ignition control by another means when an abnormal state of the crank angle sensor is detected from the second pulse signal.

REFERENCES:
patent: 4485784 (1984-12-01), Fujii et al.
patent: 4494518 (1985-01-01), Katayama et al.
patent: 4583176 (1986-04-01), Yamato et al.
patent: 4658786 (1987-04-01), Foss et al.
patent: 4664082 (1987-05-01), Suzuki
patent: 4825691 (1989-05-01), Sekiguchi

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