Kokusan Denki Co., Ltd.

Atsufumi Kinoshita

Tomohiro Iwaki

Norio Sato

Hiroshi Tamai

A control system for a reversible internal combustion engine comprising an AC magneto generator to generate an AC output voltage and a signal generator to generate pulse signals of polarity different from each other with a relation between the phases of the AC output and the pulse signals set so that the half waves of the output voltage having the same polarity when the two pulse signals of different polarities are generated whereby the rotational direction of the engine is judged from the polarity of the half wave of the output voltage of the magneto generator when the signal generator generates the pulse signal of either polarity and the engine is ignited at the low speed ignition position after it is confirmed that the rotational direction of the engine is reversed.

Control system for reversible internal combustion engine

Ignition device of capacitor discharge type for internal combustion

An ignition system for an internal combustion engine capable of carrying out operaton of an ignition position using a generating coil arranged in a magneto as a signal coil and without using an integrating circuit. For this purpose, in the ignition system, a trigger circuit for supplying a semiconductor switch with a trigger signal includes a delay rotation region setting circuit detecting that a rotational speed of an engine enters a delay rotation region to generate a delay region signal, a reference signal generating circuit for generating reference signals of different levels depending on the delay region signal, and a trigger signal generating circuit for comparing the output signal of the signal coil with the reference signal to generate a trigger signal.

Ignition system for internal combustion engine

In an ignition system for an internal combustion engine, positive half cycles of an output of the exciter coil are used as the ignition energy. A signal coil outputs a maximum advance angle side signal whose magnitude exceeds a threshold at the maximum advance angle position and a minimum advance angle side signal whose magnitude exceeds a threshold at the minimum advance angle position. An ignition timing control circuit is responsive to a maximum advance angle position indicating pulse derived from the maximum advance angle side signal and a minimum advance angle position indicating pulse derived from the minimum advance angle side signal for producing an ignition signal. The exciter coil and the signal coil have such a phase relation that the minimum advance angle side signals are produced during the negative half cycles of the exciter coil when the engine is rotating forward, and are produced during the positive half cycles of the when the engine is rotating backward. A bypassing switch bypasses the minimum advance angle position indicating pulse away from the ignition timing control circuit during the positive half cycles, so as to prevent production of the ignition signal when the engine is rotating backward.

Growing community of inventors

Numazu, Japan

Atsufumi Kinoshita