JPS58156171U

JPS58156171U - Ignition system for internal combustion engines

Info

Publication number: JPS58156171U
Application number: JP5365882U
Authority: JP
Inventors: 湯川　秀樹; 坊山　公央; 敦文木下
Original assignee: 国産電機株式会社
Priority date: 1982-04-15
Filing date: 1982-04-15
Publication date: 1983-10-18

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来例を示す接続図、第２図は本考案の基本的
な構成を示すブロック図、第３図乃至第７図はそれぞれ
本考案の異なる実施例を示す接続図、第８図ａ乃至ｆは
第７図の各部の信号波形図、第９図は本考案で用いるこ
とができる回転検出回路の変形例を示した接続図、第１
０図ａ乃至ｅは第９図の各部の信号波形図である。１１・・・点火コイル、１２・・・第１のトランジスタ
スイッチ、１３・・・バッテリ、１４・・・第２のトラ
ンジスタスイッチ、１５・・・Ｗスイッチ、１６・・・
第３のトランジスタスイッチ、１７・・・回転検出回路
、１８・・・ベース電流漸減回路、２０・・・信号供給
回路。Fig. 1 is a connection diagram showing a conventional example, Fig. 2 is a block diagram showing the basic configuration of the present invention, Figs. 3 to 7 are connection diagrams showing different embodiments of the present invention, and Fig. 8 a to f are signal waveform diagrams of each part in Fig. 7, Fig. 9 is a connection diagram showing a modification of the rotation detection circuit that can be used in the present invention, and Fig. 1
0A to 0E are signal waveform diagrams of each part in FIG. 9. DESCRIPTION OF SYMBOLS 11... Ignition coil, 12... First transistor switch, 13... Battery, 14... Second transistor switch, 15... W switch, 16...
Third transistor switch, 17... Rotation detection circuit, 18... Base current gradual reduction circuit, 20... Signal supply circuit.

Claims

[Scope of utility model registration request]

an ignition coil; a first transistor switch that is connected in series to the primary coil of the ignition coil and turns on and off the current supplied from the battery to the primary coil; a second transistor switch configured to bypass a base current from the first transistor switch; and a second transistor switch configured to conduct a base current through the second transistor switch at the ignition position of the internal combustion engine. an ignition device for an internal combustion engine, comprising: a signal supply circuit for supplying a signal; the conduction of the second transistor switch interrupts the first transistor switch to induce a high voltage for igniting a secondary coil of the ignition coil; a rotation detection circuit that outputs a rotation detection signal of a predetermined level or higher when the rotation speed of the internal combustion engine is equal to or higher than a set value; and a rotation detection circuit that is supplied with a base current by the rotation detection signal and conducts from the battery to the first transistor. A third transistor switch that supplies a Bae-Sumi current to the switch, and a capacitor that is charged while the rotation detection signal of the predetermined level or higher is generated, the level of the rotation detection signal being lower than the predetermined value. an ignition device for an internal combustion engine, comprising: a base current gradual reduction circuit that causes a gradually decreasing base current to flow through the first transistor switch by discharging the charge of the capacitor at a predetermined time constant when