Ionization misfire detection apparatus and method for an interna

Details Ionization misfire detection apparatus and method for an interna Ionization misfire detection apparatus and method for an interna

1993-03-08

1995-02-28

Raevis, Robert

Measuring and testing

Vehicle chassis

Steering

G01M 1500

Patent

active

053926412

ABSTRACT:
A misfire detection apparatus and method is provided for detecting misfire in cylinders of an internal combustion engine in a motor vehicle. The method includes sensing ionization current through spark plugs in either a distributorless ignition system or a distributor ignition system. The method also includes disabling ionization current sensing during ignition coil discharge time. The method further includes making and storing the combustion ionization measurements in order to determine if a misfire has occurred and if catalyst damage has occurred due to the misfire.

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Publication, "Vehicular Technology", IEEE Vehicular Technology Society vol. VT-27 No.1, Feb. 1978.

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