JPS5914971U

JPS5914971U - Capacitor charge/discharge type ignition device

Info

Publication number: JPS5914971U
Application number: JP11010782U
Authority: JP
Inventors: 英夫新井
Original assignee: 澤藤電機株式会社
Priority date: 1982-07-20
Filing date: 1982-07-20
Publication date: 1984-01-30

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図は本考案の一実施例に係るコンデンサ充放電式点
火装置の回路図、第２図はこの点火装置の遅角前の点火
動作を示すグラフ、第３図は遅角が行なわれている動作
を示すグラフ、第４図ｉよこの点火装置のエンジンの回
転数に対する点火角度を示すグラフである。なお図面に用いた符号において、１・・・・・・エキサ
イタコイル、３・・・・・・充放電用コンデンサ、４・
・・・・・点火用サイリスタ、１１・・・・・・信号コ
イル、１３・・・・・・第１のトランジスタ、１６・・
・・・・遅角用コンデンサ、２０・・・・・・遅角用サ
イリスク、２１・・・・・・第２のトランジスタである
。Fig. 1 is a circuit diagram of a capacitor charge/discharge type ignition system according to an embodiment of the present invention, Fig. 2 is a graph showing the ignition operation of this ignition system before retardation, and Fig. 3 is a graph showing the ignition operation before retardation. FIG. 4 is a graph showing the ignition angle of the ignition device shown in FIG. In addition, in the symbols used in the drawings, 1...exciter coil, 3...charging/discharging capacitor, 4...
... Ignition thyristor, 11 ... Signal coil, 13 ... First transistor, 16 ...
. . . Capacitor for retardation, 20 . . . Silisk for retardation, 21 . . . Second transistor.

Claims

[Scope of utility model registration request]

In the ignition device, the output of the exciter coil is stored in a charging/discharging capacitor, and the ignition thyristor is made conductive by the output of the signal coil, thereby discharging the electric charge of the charging/discharging capacitor and igniting the ignition device. A first transistor is connected between the coil and the gate of the ignition thyristor;
A second transistor is connected to the base of the transistor of the engine, and this second transistor is further connected via a retard capacitor charged by the negative output of the signal coil and a retard timing risk. When the rotational speed increases, the retard thyristor becomes conductive, and the second transistor is made conductive for a predetermined time by discharging the retard capacitor, and the first transistor is switched to a non-conducting state. A capacitor charge/discharge type ignition device characterized by: