Combustion state detector apparatus for an internal combustion e

Details Combustion state detector apparatus for an internal combustion e Combustion state detector apparatus for an internal combustion e

1998-06-10

1999-10-26

Kwon, John

Internal-combustion engines

Spark ignition timing control

Electronic control

123481, F02P 500

Patent

active

059709529

ABSTRACT:
A combustion state detector apparatus for an internal combustion engine has a current detection device for detecting a current flowing between the ignition plug and a ground, and an ignition driving device for driving the ignition plug on the basis of an ignition instruction signal from an electronic control device of the internal combustion engine. An independent unit including a current detection device and an ignition driving device, is provided for each cylinder of the internal combustion engine. With respect to each cylinder, the apparatus determines whether a misfire has occurred on the basis of the current flowing between the ignition plug and the ground at the time of combustion. The apparatus is also capable of detecting abnormalities and/or wire breakages in a signal system provided for signal transmission between each independent unit and the electronic control device of the internal combustion engine.

REFERENCES:
patent: 5005547 (1991-04-01), Suga et al.
patent: 5087882 (1992-02-01), Iwata
patent: 5775298 (1998-07-01), Haller

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