JPS5824472U

JPS5824472U - Non-contact spark ignition device for internal combustion engines

Info

Publication number: JPS5824472U
Application number: JP11774581U
Authority: JP
Inventors: 杉本　桂吾; 博小池
Original assignee: 株式会社日立製作所
Priority date: 1981-08-10
Filing date: 1981-08-10
Publication date: 1983-02-16

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図は従来技術の一例を示す回路図、第２図は第１図
中波形成形回路７の一例を示す回路図、第３図は短い三
角波発生回路１３の一例を示す回路図、第４図は演算回
路（１）１５の一例を示す回路図、第５図は第１図に示
す回路の動作を説明するための各都電圧のシーケシス図
、第６図は本考案の一実施例を示す回路図、第７藺は第
６図に示す電源電圧検出回路３２の一例を示す回路図°
である。１５・・・演算回路＜１）、１７・・・コンパレータ、
３２・・・電源電圧検出回路、３３・・・トランジスタ
、１６１．１６２・・・抵抗器、１６５・・・トランジ
スタ。「痴７５／一一一」νＬ1 is a circuit diagram showing an example of the prior art, FIG. 2 is a circuit diagram showing an example of the waveform shaping circuit 7 in FIG. 1, FIG. 3 is a circuit diagram showing an example of the short triangular wave generating circuit 13, and FIG. The figure is a circuit diagram showing an example of the arithmetic circuit (1) 15, FIG. 5 is a sequence diagram of various voltages to explain the operation of the circuit shown in FIG. 1, and FIG. 6 is a circuit diagram showing an example of the present invention. The circuit diagram shown in Fig. 7 is a circuit diagram showing an example of the power supply voltage detection circuit 32 shown in Fig. 6.
It is. 15... Arithmetic circuit <1), 17... Comparator,
32...Power supply voltage detection circuit, 33...Transistor, 161.162...Resistor, 165...Transistor. “Chi75/111” νL

Claims

[Scope of utility model registration request]

Each cylinder! a pulser that generates a detection signal at a reference ignition position before and after the advance, a triangular wave that connects the pulser signals at a constant slope, and an arithmetic circuit that adds a voltage to the triangular wave; In a multi-cylinder non-contact ignition device that advances the angle by comparing the output voltage and a voltage that is inversely proportional to the rotational speed and determining the ignition position at the intersection, a power supply voltage detection circuit is added and the power supply voltage is set to the set value. A non-contact ignition device for an internal combustion engine, characterized in that the output of the arithmetic circuit is short-circuited when the power supply voltage falls below a set value, so that ignition is performed at a forward position when the power supply voltage falls below a set value. .