Misfire-detecting system for internal combustion engines

Details Misfire-detecting system for internal combustion engines Misfire-detecting system for internal combustion engines

1992-03-05

1993-06-22

Wieder, Kenneth A.

Electricity: measuring and testing

Internal-combustion engine ignition system or device

123479, 324388, F02P 1700, F02M 5100

Patent

active

052219046

ABSTRACT:
A misfire-detecting system detects a misfire occurring in an internal combustion engine in such a manner that a value of discharge current is detected when sparking voltage is generated in response to an ignition command signal, the detected value of discharge current is compared with a predetermined current value, and it is determined that a misfire has occurred when a time period over which the detected discharge current value after generation of the ignition command signal is above the predetermined current value is shorter than a predetermined time period.

REFERENCES:
patent: 3961240 (1976-06-01), Pohl
patent: 4825167 (1989-04-01), Bayba
patent: 4886029 (1959-12-01), Lill et al.
patent: 4918389 (1990-04-01), Schleupen et al.
patent: 5019779 (1991-05-01), Ookawa
patent: 5046470 (1991-09-01), Entenmann et al.
patent: 5174261 (1992-12-01), Fuji et al.

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