Misfire detection in internal combustion engines

Details Misfire detection in internal combustion engines Misfire detection in internal combustion engines

1994-05-02

1996-04-23

Chilcot, Richard

Measuring and testing

Vehicle chassis

Steering

36443108, G01M 1500

Patent

active

055093027

ABSTRACT:
Internal combustion engine misfires are diagnosed through monitoring of change in engine speed wherein an acceleration spike index is generated for each cylinder event over a number of engine cycles in a test period and is corrected in accord with sensed part tolerancing, and wherein the corrected acceleration spike index is compared to at least one misfire threshold. For each engine cylinder, a degree of misfire severity is diagnosed at the end of the test period in accord with the frequency of excursions by the corresponding misfire index above the at least one misfire threshold.

REFERENCES:
patent: 4064747 (1977-12-01), Rackliffe et al.
patent: 4179922 (1979-12-01), Bouverie et al.
patent: 4295363 (1981-10-01), Buck et al.
patent: 4337647 (1982-07-01), Radcliffe et al.
patent: 4344140 (1982-08-01), Leung
patent: 4532592 (1985-07-01), Citron et al.
patent: 4697561 (1987-10-01), Citron
patent: 4930479 (1990-06-01), Osawa et al.
patent: 4936277 (1990-06-01), Deutsch et al.
patent: 5041979 (1991-08-01), Hirka et al.
patent: 5086741 (1992-02-01), Nakamura et al.
patent: 5214958 (1993-06-01), Inada et al.
patent: 5237504 (1993-08-01), Holmes et al.
patent: 5239473 (1993-08-01), Ribbens et al.
patent: 5245865 (1993-09-01), Kayanuma
patent: 5245866 (1993-09-01), Hashiguchi et al.
patent: 5263364 (1993-11-01), Nakayama et al.
patent: 5278760 (1994-01-01), Ribbens et al.
900232 "Methods of On-Board Misfire Detection" Plapp et al.

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