Method of detecting misfire of engine ignition system and device

Details Method of detecting misfire of engine ignition system and device Method of detecting misfire of engine ignition system and device

1994-12-15

1997-01-14

Argenbright, Tony M.

Internal-combustion engines

High tension ignition system

Safety device

123656, 324388, 324399, F02P 1700

Patent

active

055929265

ABSTRACT:
A method of detecting a misfire of an ignition system for an internal combustion engine is provided. By the method, after completion of spark discharge of a spark plug, a high tension pulse which is not so high as to cause spark discharge is applied to each spark plug by way of a reverse current preventing diode and a secondary winding of an ignition coil or by way of a reverse current preventing diode and a leakage preventing diode for preventing ingress of an ignition high voltage. Misfire at each cylinder is detected on the basis of a voltage attenuation characteristic at a passing side terminal of the reverse current preventing diode. A device for carrying out the above method is also provided.

REFERENCES:
patent: 5144936 (1992-09-01), Murata et al.
patent: 5283527 (1994-02-01), DeBiasi
patent: 5400760 (1995-03-01), Miyata et al.

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