JPH02124270U

JPH02124270U -

Info

Publication number: JPH02124270U
Application number: JP3310689U
Authority: JP
Priority date: 1989-03-23
Filing date: 1989-03-23
Publication date: 1990-10-12

Description

[Brief explanation of drawings]

第１図及び第２図はそれぞれ本願第１及び第２
の考案の基本的な構成を示した回路図、第３図は
第１図及び第２図の点火装置の電源電圧波形及び
トリガ信号波形を示す波形図、第４図及び第５図
はそれぞれ第１の考案の異なる実施例を示す回路
図、第６図及び第７図はそれぞれ第２の考案の異
なる実施例を示す回路図である。１……点火コイル、２……スイツチ手段、３…
…トリガ回路、４……点火プラグ、Ｆ……電界効
果トランジスタ、Ｒ１〜Ｒ４……抵抗、Ｔｒ１〜
Ｔｒ２……トランジスタ、Ｄ１，Ｄ２……ダイオ
ード、Ｔｈ……サイリスタ。 Figures 1 and 2 are the first and second figures of the present application, respectively.
FIG. 3 is a waveform diagram showing the power supply voltage waveform and trigger signal waveform of the ignition device shown in FIGS. 1 and 2, and FIGS. 4 and 5 are respectively shown in FIG. FIGS. 6 and 7 are circuit diagrams showing different embodiments of the first invention, and FIGS. 6 and 7 are circuit diagrams showing different embodiments of the second invention, respectively. 1...Ignition coil, 2...Switch means, 3...
...Trigger circuit, 4...Spark plug, F...Field effect transistor, R1~R4...Resistor, Tr1~
Tr2...transistor, D1, D2...diode, Th...thyristor.

Claims

[Claims for Utility Model Registration] (1) An ignition coil that is installed in a generator attached to an internal combustion engine and that induces a voltage in the primary coil in synchronization with the rotation of the engine, and the primary coil of the ignition coil. switch means connected in parallel to;
An ignition device for an internal combustion engine, comprising a trigger circuit that applies a trigger signal from the primary coil side to the switch means at a position whose phase is advanced from the ignition position of the internal combustion engine, and extinguishes the trigger signal at the ignition position, An ignition device for an internal combustion engine, characterized in that said switch means comprises a field effect transistor whose drain-source circuit is connected in parallel to said primary coil, and whose gate is supplied with said trigger signal. (2) An exciter coil that is provided in a generator attached to an internal combustion engine and that induces a voltage in a primary coil in synchronization with the rotation of the engine, an ignition coil, and an exciter coil that is connected in parallel to the exciter coil. An ignition system for an internal combustion engine comprising a switch means and a trigger circuit which applies a trigger signal from the exciter coil side to the switch means at a position whose phase is more advanced than the ignition position of the internal combustion engine and extinguishes the trigger signal at the ignition position. An ignition device for an internal combustion engine, characterized in that the switch means comprises a field effect transistor whose drain-source circuit is connected in parallel to the primary coil, and whose gate receives the trigger signal.