Internal-combustion engines – High tension ignition system – Having specific trigger circuitry
Patent
1979-10-12
1981-02-10
Cox, Ronald B.
Internal-combustion engines
High tension ignition system
Having specific trigger circuitry
123643, F02P 100
Patent
active
042495067
ABSTRACT:
An ignition device for an internal combustion engine comprises two signal generator coils for generating the output having steep variation from positive (or negative) peak value to negative (or positive) peak value by corresponding to the ignition timing of the engine. The two signal coils are serially connected in reverse polarity and the output terminals of the generator coils are connected in parallel to a circuit in which two rectifying elements are serially connected in reverse polarity. The joint between the two generator coils is connected to the joint between the two rectifying elements. The output terminals of the two generator coils are connected to the two input terminals of a differential amplifying circuit and the output of the differential amplifying circuit is given as input signal of the ignition circuit. Variation of the ignition timing caused by variation of the rotating speed of the signal generator can be decreased and the ignition device is stable against the external noise and the noise formed between the generator coils.
REFERENCES:
patent: 3938490 (1976-02-01), Snyder
patent: 3991733 (1976-11-01), Harris
patent: 4153850 (1979-05-01), Bover
Cox Ronald B.
Mitsubishi Denki & Kabushiki Kaisha
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