JPS60114278U

JPS60114278U - internal combustion engine ignition system

Info

Publication number: JPS60114278U
Application number: JP96184U
Authority: JP
Inventors: 桃山　勉; 本庄　由尚
Original assignee: 三菱電機株式会社
Priority date: 1984-01-10
Filing date: 1984-01-10
Publication date: 1985-08-02

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 the drawing]

第１図は本案の一実施例による内燃機関点火装置の概念
図、第３図はその具体化例の回路図、第４図は他の実施
例の回路図、第２図は第１図および第３図の動作説明図
である。１・・・・・・発電コイル、２・・・・・・ダイオード
、３・・・・・・コンデンサ、４・・・・・・サイリス
タ、５・・・・・・点火コイル、６・・・・・・１次コ
イル、　７　曲ｍｍ　２　次コイル、８・・・・・・点
火プラグ、９・・・・・・信号源（信号コイル）、９ａ
・・・・・・遅れ信号、９ｂ・・・・・・進み信号、９
Ｃ・・・・・・信号源（遅れ信号発電機）、９ｄ・・・
・・・信号源（進み信号発電機）、１７・・・・・・電
源回路、１８・・・・・・Ｆ　−■回路、２１・・・・
・・スイッチング素子（トランジスタ）。なお、図中、
同一符号は同一、又は相当部分を示す。　　　　　゛１７６−FIG. 1 is a conceptual diagram of an internal combustion engine ignition system according to an embodiment of the present invention, FIG. 3 is a circuit diagram of an embodiment thereof, FIG. 4 is a circuit diagram of another embodiment, and FIG. FIG. 4 is an explanatory diagram of the operation of FIG. 3; 1... Generator coil, 2... Diode, 3... Capacitor, 4... Thyristor, 5... Ignition coil, 6... ...Primary coil, 7 mm Secondary coil, 8...Spark plug, 9...Signal source (signal coil), 9a
...Delay signal, 9b...Advance signal, 9
C... Signal source (delayed signal generator), 9d...
...Signal source (advance signal generator), 17...Power supply circuit, 18...F-■ circuit, 21...
...Switching element (transistor). In addition, in the figure,
The same reference numerals indicate the same or equivalent parts.゛176-

Claims

[Scope of utility model registration request]

(1) A power generating coil that generates power for ignition of an internal combustion engine;
A diode that rectifies the output of the generator coil, and a capacitor that is charged by the output of the generator coil rectified by the diode are connected by a signal at the ignition timing of the internal combustion engine, and the charge in the capacitor is transferred to the primary side of the ignition coil. an internal combustion engine ignition device comprising: a thyristor that emits a high voltage to the secondary side of the ignition coil to ignite the internal combustion engine; and a signal source that provides a signal to the gate of the thyristor to determine the ignition timing of the internal combustion engine. In the apparatus, the signal source generates a delay signal adapted to the ignition timing at low speed rotation of the internal combustion engine and an advance signal adapted to the ignition timing at high rotation speed of the internal combustion engine, and an advance signal circuit for transmitting the advance signal. is provided with a switching circuit, and this switching circuit is controlled by a power supply circuit that operates with input from the generator coil or the signal source and an F-V circuit that outputs a voltage according to the rotation speed of the internal combustion engine, An internal combustion engine ignition device, wherein the switching circuit disables the advance signal when the rotational speed of the internal combustion engine is below a certain value.゛

(2) The switching circuit is configured so that the lead signal can be bypassed, and when the output of the F-V circuit exceeds a certain value, the switching element of the switching circuit becomes non-conductive, and the lead signal is bypassed. The output of the signal circuit is set so that a voltage capable of driving the thyristor is obtained at a rotation speed n1 at which the rotation speed of the internal combustion engine becomes a certain level. high,
The internal combustion engine ignition system according to claim 1, wherein the advance angle and the required rotational speed n2 of the internal combustion engine are set lower than n2.

(3) Constructed so that the advance signal is applied to the gate of the thyristor via the switching element of the switching circuit!
The internal combustion engine ignition system according to claim 1, wherein the switching element is made conductive when the output of the F-V circuit exceeds a certain value. −