Method of misfire detection for an internal combustion engine

Details Method of misfire detection for an internal combustion engine Method of misfire detection for an internal combustion engine

1997-09-03

1998-10-06

Dombroske, George M.

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

73116, 731173, 123419, 123436, 701101, G01M 1500

Patent

active

058191976

ABSTRACT:
A method of misfire detection for an internal combustion engine in a motor vehicle includes the step of sampling a misfire indicator and filtering the misfire indicator to provide a filtered misfire indicator. The method also includes the step of selecting one misfire indicator point from the filtered misfire indicator. The method further includes the steps of comparing the one misfire indicator point to a misfire threshold to detect a misfire event and identifying a misfire if a misfire event is detected.

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U.S.S.N. 08/468,117, filed Jun. 6, 1995, "Engine Misfire Detection with Compensation for Normal Acceleration of Crankshaft".
U.S.S.N. 08/468,117, filed Jun. 6, 1996, "Engine Misfire Detection with Rough Road Inhibit".
U.S.S.N. 08/468,113, filed Jun. 6, 1995, "Engine Misfire Detection with Cascade Filter Configuration".
U.S.S.N. 08/511,125, filed Aug. 4, 1995, "Engine Misfire Detection with Digital Filtering".

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