JPS59190968U

JPS59190968U - Capacitor discharge type internal combustion engine ignition system

Info

Publication number: JPS59190968U
Application number: JP8576283U
Authority: JP
Inventors: 芹沢　博
Original assignee: 国産電機株式会社
Priority date: 1983-06-07
Filing date: 1983-06-07
Publication date: 1984-12-18
Also published as: JPH0118848Y2

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来例を示した回路図、第２図および第３図は
それぞれ本考案の異なる実施例の基本的な構成を示した
回路図、第４図は本考案の具体的な実施例を示した回路
図、第５図は本考案で用いる発電コイルの特性の一例を
示した線図、第６図は本考案の動作を説明する電圧波形
図、第７図および第８図は本考案により得られる点火特
性の種々の例を示した線図である。１・・・・・・点火コイル、２・・・・・・点火プラグ
、３・・・・・・コンデンサ、４・・・・・・サイリス
タ、２０・・・・・・低速用発電コイル、２１・・・高
速用発電コイル、２２・・・・・・第１のダイオード、
２３・・・・・・第２のダイオード、２４・・・・・・
第３のダイオード、２５・・・・・・第４のダイオード
。ど９ ′−Ｉ５（６／３Fig. 1 is a circuit diagram showing a conventional example, Figs. 2 and 3 are circuit diagrams showing the basic configuration of different embodiments of the present invention, and Fig. 4 is a specific embodiment of the present invention. 5 is a diagram showing an example of the characteristics of the generator coil used in the present invention, FIG. 6 is a voltage waveform diagram explaining the operation of the present invention, and FIGS. 7 and 8 are the diagrams shown in this invention. FIG. 4 is a diagram showing various examples of ignition characteristics obtained by the invention. 1... Ignition coil, 2... Spark plug, 3... Capacitor, 4... Thyristor, 20... Low speed generator coil, 21... High-speed power generation coil, 22... First diode,
23... Second diode, 24...
Third diode, 25...Fourth diode. Do9'-I5 (6/3

Claims

[Scope of utility model registration request]

ignition of an internal combustion engine, comprising an ignition coil, a capacitor provided on the primary side of the ignition coil, and a thyristor provided so as to discharge the electric charge of the capacitor to the primary coil of the ignition coil when conductive. In a capacitor discharge type internal combustion engine ignition device that performs an ignition operation by conducting the sirisk at a certain position, the low speed ignition device is provided in a generator that rotates synchronously with the internal combustion mechanism and has a characteristic that the output decreases in the high speed region of the engine. and a high-speed power generating coil that has a characteristic of generating a smaller output than the low-speed power generating coil in the low-speed region of the engine and increasing the output as the rotational speed of the engine increases from the low-speed region to the high-speed region, The low-speed generator coil and the high-speed generator coil are connected in series so as to generate outputs in the same phase, and one end of the series circuit of the low-speed generator coil and the high-speed generator coil connects the anode to the series circuit. The capacitor is coupled to one end of the capacitor through a first diode with its anode facing the other end of the series circuit, and the other end of the series circuit of both generator coils is coupled through a second diode with its anode facing the other end of the series circuit. coupled to the other end of the capacitor through a third diode coupled to the gate of the thyristor and having its cathode directed toward the other end of the series circuit;
A capacitor discharge type internal combustion engine ignition device characterized in that the cathode of the thyristor is coupled to one end of the series circuit of the two generating coils through a fourth diode whose anode faces the cathode side of the thyristor.