Ignition timing control device for an internal combustion engine

Details Ignition timing control device for an internal combustion engine Ignition timing control device for an internal combustion engine

1989-10-13

1990-08-28

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Fuel injection system

123476, 123612, F02P 7067

Patent

active

049516280

ABSTRACT:
An ignition timing control device for a multi-cylinder internal combustion engine is disclosed, which determines the control timings of the ignition system on the basis of a rotational position signal, the leading and trailing edges of the pulses of which signal correspond to the first and second rotational positions of the crankshaft in relation to respective cylinders, wherein the second rotational position with respect to a specific cylinder is displaced by an offset angle. The pulses corresponding to the specific cylinder are identified by a cylinder identifying means on the basis of duty ratio t/T of the pulses. When the control timings such as the ignition timings are determined on the basis of the second rotational positions of the crankshaft, an offset compensator means compensates for the offset angle of the second rotational position with respect to the specific cylinder in the determination of the control timings, in response to an identification of a pulse corresponding to the specific cylinder by the cylinder identifying means.

REFERENCES:
patent: 4442822 (1984-04-01), Kondo et al.
patent: 4553426 (1985-11-01), Capurka
patent: 4700305 (1987-10-01), Lotterbach et al.
patent: 4760827 (1988-08-01), Schreiber et al.
patent: 4783627 (1988-11-01), Pagel et al.

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