Crank angle detecting system for an internal combustion engine

Details Crank angle detecting system for an internal combustion engine Crank angle detecting system for an internal combustion engine

1988-02-05

1988-11-29

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

123612, F02P 514

Patent

active

047873558

ABSTRACT:
A pulse generator disk is secured to a crankshaft of an engine. The disk has notches representing a compression top dead center of each cylinder. A first magnetic pickup is provided for producing a first output signal in accordance with the notch. A rotary member is secured to a camshaft of the engine. The rotary member has projections provided at positions corresponding to respective cylinders. A second magnetic pickup is provided for producing a second output signal in accordance with the projections. A control system is provided to respond to the first output signal to produce a crank angle signal. When the first output signal does not generate at a proper timing, a crank angle signal is produced dependent on the second output signal.

REFERENCES:
patent: 4615318 (1986-10-01), Imodo et al.
patent: 4644917 (1987-02-01), Yakuwa et al.
patent: 4658786 (1987-04-01), Ross et al.
patent: 4664082 (1987-05-01), Suzuki
patent: 4690123 (1987-09-01), Kimura et al.
patent: 4718395 (1988-01-01), Iwata

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