Crank angle detecting device for an internal combustion engine

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

2005-05-10

2005-05-10

McCall, Eric S. (Department: 2855)

Measuring and testing

Vehicle chassis

Steering

Reexamination Certificate

active

06889540

ABSTRACT:
The present invention has: a crank signal vane in which teeth are provided on a circumference at predetermined crank angles, and a first missing tooth portion having one missing tooth and a second missing tooth portion having two missing teeth are established; a crank angle sensor for outputting a pulse shape crank signal pattern corresponding to the teeth; and an electronic control unit for calculating a crank signal period based on the crank signal pattern, computing a missing tooth identification value based on the calculated crank signal period; detecting the number of missing teeth based on the computed missing tooth identification value, detecting a crank angle reference position for cases in which the detected number of missing teeth is one or two, and identifying a cylinder group.

REFERENCES:
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patent: 6644273 (2003-11-01), Hagari et al.
patent: 6679108 (2004-01-01), Robertson et al.
patent: 6732713 (2004-05-01), Yonezawa et al.
patent: 20030000293 (2003-01-01), Robertson et al.
patent: 20040007054 (2004-01-01), Makino et al.
patent: 20040089272 (2004-05-01), Kanazawa et al.
patent: 11-315748 (1999-11-01), None

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