Internal combustion engine control apparatus

Details Internal combustion engine control apparatus Internal combustion engine control apparatus

2008-06-24

2010-06-01

Cronin, Stephen K (Department: 3747)

Internal-combustion engines

Engine speed regulator

Having condition responsive means with engine being part of...

C123S350000

Reexamination Certificate

active

07726278

ABSTRACT:
In order to accurately detect an abnormal state of a rotation direction detection unit for detecting a rotation direction of a crank shaft, provided is an internal combustion engine control apparatus including: a rotation detection unit including the rotation direction detection unit for detecting the rotation direction of the crank shaft of an engine to output a rotation direction signal, and a rotation speed detection unit for outputting a pulse signal according to a rotation speed of the crank shaft; a stop position calculation unit for calculating, based on an output from the rotation detection unit, a stop position of the crank shaft when the engine stops; and an abnormal state detection unit for detecting the abnormal state of the rotation direction detection unit when an actual rotation direction of the crank shaft differs from the rotation direction of the crank shaft based on the rotation direction signal.

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Japanese Office Action dated Aug. 3, 2009.

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