Engine misfire detector

Details Engine misfire detector Engine misfire detector

1995-06-15

1996-12-03

Chilcot, Richard

Measuring and testing

Vehicle chassis

Steering

36443107, 123436, G01M 1500

Patent

active

055810225

ABSTRACT:
A system for determining the occurrence of a misfire in an internal combustion engine includes an oscillator, a phase detector coupled to receive an engine timing signal and the oscillating signal from the oscillator for producing an error signal functionally relating to phase difference between the signals. A loop filter is coupled to the phase detector for producing a tracking signal for producing the oscillating signal functionally related to the tracking signal. A phase error accumulator is coupled to receive the error signal and is operative to produce an output signal when the magnitude of at least one of the duration and magnitude of the error signal exceeds a predetermined value.

REFERENCES:
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patent: 4586369 (1986-05-01), Vogler
patent: 5263453 (1993-11-01), Wakahara et al.
patent: 5287737 (1994-02-01), Osawa et al.
patent: 5303158 (1994-04-01), Kuroda
patent: 5379634 (1995-01-01), Kuroda et al.
patent: 5394330 (1995-02-01), Horner
patent: 5440921 (1995-08-01), Matsuno et al.
patent: 5471869 (1995-12-01), Kuroda et al.

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