Method of detecting engine speed for detecting misfires in an in

Details Method of detecting engine speed for detecting misfires in an in Method of detecting engine speed for detecting misfires in an in

1996-06-10

1998-10-13

Dombroske, George M.

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

73116, 123419, 123436, G01M 1500

Patent

active

058227105

ABSTRACT:
The invention is directed to a method for detecting combustion misfires in a multicylinder internal combustion engine. The method includes the steps of: forming a criterion for the rough running of the engine for each cylinder individually on the basis of time intervals during which the crankshaft passes through predetermined angular ranges; and, forming corrective values from rough-running values for each cylinder individually during misfire-free operation so that the rough-running values for each individual cylinder coupled to said corrective values become equal with respect to each other.

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