JPS62124278U

JPS62124278U -

Info

Publication number: JPS62124278U
Application number: JP1035286U
Authority: JP
Priority date: 1986-01-29
Filing date: 1986-01-29
Publication date: 1987-08-07
Also published as: JPH045737Y2

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す回路図、第２
図は第１図の各部の電圧波形図、第３図は本考案
の装置により得られる点火特性の一例を示す線図
、第４図は第１図の実施例における信号電圧の波
形を示す線図である。１……点火コイル、２……点火プラグ、３……
点火エネルギー蓄積用コンデンサ、４……放電制
御用サイリスタ、７……エキサイタコイル、１１
……信号コイル、１２……抵抗（電流制限素子）
、１３……信号短絡用サイリスタ、１４……ダイ
オード、１５……抵抗、１９……点火時期制御用
コンデンサ、２５……信号側路用スイツチ回路。 Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a voltage waveform diagram of each part in Figure 1, Figure 3 is a line diagram showing an example of the ignition characteristics obtained by the device of the present invention, and Figure 4 is a line diagram showing the waveform of the signal voltage in the embodiment of Figure 1. It is a diagram. 1...Ignition coil, 2...Spark plug, 3...
Ignition energy storage capacitor, 4... Thyristor for discharge control, 7... Exciter coil, 11
... Signal coil, 12 ... Resistor (current limiting element)
, 13...Thyristor for signal short circuit, 14...Diode, 15...Resistor, 19...Capacitor for ignition timing control, 25...Switch circuit for signal bypass.

Claims

[Claims for Utility Model Registration] An ignition coil, an exciter coil, and an ignition energy storage capacitor provided on the primary side of the ignition coil and charged to one polarity by the positive half-cycle output of the exciter coil. , a discharge control thyristor provided to discharge the electric charge of the ignition energy storage capacitor to the primary coil of the ignition coil when conductive, and a signal coil that outputs a signal of one cycle per engine rotation. and a trigger circuit that supplies a trigger signal to the discharge control thyristor with the output of the previous half cycle of the signal coil, wherein the signal of the previous half cycle generated by the signal coil is a signal shorting thyristor connected in parallel to the signal coil in a forward direction; a current limiting element connected in series to the signal shorting thyristor; and a current limiting element after the signal coil. an ignition timing control capacitor that is charged to one polarity by the output of a half cycle; a discharge circuit that discharges the electric charge of the ignition timing control capacitor at a constant time constant; An ignition signal supply circuit that supplies an ignition signal to the signal shorting thyristor and a gate cathode of the signal shorting thyristor are connected in parallel to each other, and are controlled by the terminal voltage of the ignition timing control capacitor. The present invention is characterized by comprising a signal shunting switch circuit that becomes conductive when the firing signal is supplied in a state where the terminal voltage is less than a set level and bypasses the firing signal from the signal shorting thyristor. Ignition system for internal combustion engines.