JPS62130175U

JPS62130175U -

Info

Publication number: JPS62130175U
Application number: JP1748086U
Authority: JP
Priority date: 1986-02-12
Filing date: 1986-02-12
Publication date: 1987-08-17
Also published as: JPH0413420Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す回路図、第２
図は第１図の各部の信号電圧波形を示す波形図、
第３図は本考案で用いる過進角防止回路の他の構
成例を示した回路図である。１……点火回路、２……内燃機関用点火信号発
生回路、２００……電源回路、２０１……信号コ
イル、２０２Ａ……第１の波形整形回路、２０２
Ｂ……第２の波形整形回路、２０３……フリツプ
フロツプ回路、２０４……点火区間信号発生回路
、２０５……第１の積分回路、２０６……第２の
積分回路、２０７……比較回路、２０８……過進
角防止回路。 Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a waveform diagram showing the signal voltage waveform of each part in Figure 1,
FIG. 3 is a circuit diagram showing another configuration example of the overadvance angle prevention circuit used in the present invention. DESCRIPTION OF SYMBOLS 1... Ignition circuit, 2... Ignition signal generation circuit for internal combustion engine, 200... Power supply circuit, 201... Signal coil, 202A... First waveform shaping circuit, 202
B...Second waveform shaping circuit, 203...Flip-flop circuit, 204...Ignition interval signal generation circuit, 205...First integration circuit, 206...Second integration circuit, 207...Comparison circuit, 208 ...Overadvanced angle prevention circuit.

Claims

[Claims for Utility Model Registration] A signal coil that outputs a maximum advance position signal and a minimum advance position signal that are equal to or higher than a threshold level at the maximum advance position and the minimum advance position of an internal combustion engine, respectively; an ignition interval signal generation circuit that receives an angular position signal and a minimum advance position signal and generates an ignition interval signal whose signal width corresponds to an ignition interval from a maximum advance position to a minimum advance position; and an ignition interval signal generating circuit that is controlled by the ignition interval signal. A first integrating circuit that performs an integrating operation by charging the first integrating capacitor from the maximum advance position and a second integrating capacitor are charged, with the period during which the ignition interval signal is generated being the maximum charging period. a second integrating circuit that performs an integrating operation when the minimum advance angle position signal exceeds a threshold level; a reset circuit that instantly discharges the second integrating capacitor when the minimum advance angle position signal exceeds a threshold level; An ignition signal that determines the ignition timing of an ignition system for an internal combustion engine when the terminal voltage of the first integrating capacitor exceeds the terminal voltage of the second integrating capacitor by comparing the terminal voltage with the terminal voltage of the second integrating capacitor. an ignition signal generating circuit for an internal combustion engine, comprising: a comparison circuit that outputs a voltage at the terminal of the first integrating capacitor; An ignition signal generator for an internal combustion engine, comprising an overadvance prevention circuit that limits the upper limit value of the terminal voltage of the first integrating capacitor to a set voltage by preventing charging of the first integrating capacitor. circuit.