JPS6287179U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram showing an engine ignition system according to one embodiment of this invention, Fig. 2 is a circuit diagram showing an engine ignition system according to another embodiment of this invention, and Figs. 3 and 4 are respectively FIG. 2 is a circuit diagram showing a conventional engine ignition device. 1...Generating coil, 2...Signal coil, 4, 13...
Capacitor, 6...Ignition coil, 7, 18, 22...
Thyristor, 9... Stop switch, 10... Ignition control circuit, 12, 15, 16... Resistor, 17, 21
, 23... Constant voltage diode, 25... Transistor. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims for Utility Model Registration] (1) A generator coil that generates a signal in synchronization with the rotation of the engine, an ignition circuit that generates engine ignition voltage for the ignition coil by the output of the generator coil, and a connection to one end of the generator coil. a first semiconductor switching element having an input end, an output end, and a control pole; a stop switch connected between the output end of the first semiconductor switching element and the other end of the generator coil; a first constant voltage means connected between a control pole of the switching element and the other end of the power generation coil and constant voltage applied to the control pole of the first semiconductor switching element; a second semiconductor switching element connected to the output end of the switching element and having an input end, an output end and a control pole; connected between the output end of the second semiconductor switching element and the other end of the power generation coil; a second semiconductor switching element that constantizes the voltage applied to the output terminal of the second semiconductor switching element;
a constant voltage means, a capacitor charged via the second semiconductor switching element and charged from one end of the generator coil via a resistor, which operates using the charged charge of this capacitor as a power source, and controls the ignition timing of the engine. An ignition control circuit that controls the ignition circuit based on an output signal of a signal coil that generates an ignition signal, detects a power generation output of the power generation coil, and controls a control pole of the second semiconductor switching element based on this output. An engine ignition system equipped with a voltage detection circuit. (2) The ignition system for an engine according to claim 1, wherein the first constant voltage means is set to a voltage higher than the lowest voltage that does not cause malfunction or malfunction of the ignition control circuit. (3) Registration of a utility model characterized in that the charging voltage of the capacitor is set lower than the power supply voltage of the ignition control circuit when the engine rotates at high speeds, and higher than the lowest voltage that will not cause malfunction or malfunction of the ignition control circuit. An ignition system for an engine according to claim 1 or 2. (4) Utility model registration claims 1 to 3, characterized in that the voltage set by the second constant voltage means is set lower than the voltage set by the first constant voltage means. Ignition system of the engine described in any of paragraphs. (5) The ignition system for an engine according to any one of claims 1 to 4, wherein the second semiconductor switching element is a thyristor. (6) The ignition system for an engine according to any one of claims 1 to 4, wherein the second semiconductor switching element is a transistor. (7) The engine ignition device according to any one of claims 1 to 6 of the utility model registration claim, wherein the second semiconductor switching element has a lower breakdown voltage than the first semiconductor switching element. .