Cylinder recognition apparatus for an internal combustion engine

Details Cylinder recognition apparatus for an internal combustion engine Cylinder recognition apparatus for an internal combustion engine

1989-10-03

1990-12-25

Nelli, Raymond A.

Internal-combustion engines

High tension ignition system

Having engine component position sensor

123643, F02P 900

Patent

active

049794850

ABSTRACT:
A cylinder recognition apparatus for a multi-cylinder internal combustion engine has a position sensor which generates for each cylinder output pulses which indicate prescribed positions of the piston of the cylinder. The output pulse for a prescribed reference cylinder of the engine has a different pulse width from the pulses for the other cylinders. A cylinder recognition circuit calculates a ratio which is a function of the pulse width and the period of each output pulse. A comparator compares the ratio with a prescribed value and a cylinder is recognized on the basis of the comparison.

REFERENCES:
patent: Re31709 (1984-10-01), Ford
patent: 3613654 (1971-10-01), Gilbert
patent: 3621826 (1971-11-01), Chrestensen
patent: 4122814 (1978-10-01), Ford
patent: 4700305 (1987-02-01), Lotterbache et al.
patent: 4856489 (1989-08-01), Ozawa

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