Nippondenso Co., Ltd.

Katsuhisa Mase

Takeshi Matsui

Noboru Yamamoto

Yoshiyuki Miyase

Motoshi Kawai

In an ignition system for an internal combustion engine, a signal generator generates a given ac signal in synchronism with the rotation of the engine and a waveform reshaping circuit reshapes the waveform of the ac signal from the signal generator thus generating a pulse signal. An ignition timing control circuit is responsive to the pulse signal from the waveform reshaping circuit to control the timing of ignition of an ignition coil in which a primary current is switched on and off in accordance with the pulse signal.

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Aichi, Japan

Katsuhisa Mase