Direct fire ignition system having individual knock detection se

Details Direct fire ignition system having individual knock detection se Direct fire ignition system having individual knock detection se

1990-09-28

1992-05-12

Argenbright, Tony M.

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

123634, 123635, 123643, 123654, 324380, F02P 515, F02P 1700, G01L 2322

Patent

active

051117908

ABSTRACT:
A direct fire ignition system for an internal combustion engine having a coil assembly attachable to each spark plug. Each coil assembly has a high voltage transformer for producing a voltage sufficient to cause the spark plug to generate a spark, an integral capacitor parallel with the spark plug, and a spark plug sensor circuit coupling to the high voltage transformer for generating a spark confirmation signal when a spark is generated. The spark sensor circuit is responsive to a high frequency signal generated in the high voltage transformer within a predetermined frequency range to generate the spark confirmation signal. The direct fire ignition system is compatible with single strike or multi-strike modes of operation. The system can also generate a probe voltage across the spark plug to test for auto or pre-ignition.

REFERENCES:
patent: 3621826 (1971-11-01), Chrestensen
patent: 4090125 (1978-05-01), Warner
patent: 4382430 (1983-05-01), Iwasaki
patent: 4502454 (1985-03-01), Hamai et al.
patent: 4547734 (1985-10-01), Spaude
patent: 4825844 (1989-05-01), Fasola
patent: 4846129 (1989-07-01), Noble
patent: 4886029 (1989-12-01), Lill et al.
patent: 5003958 (1991-04-01), Yoneyama et al.

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