JPH01152070U

JPH01152070U -

Info

Publication number: JPH01152070U
Application number: JP4777988U
Authority: JP
Priority date: 1988-04-11
Filing date: 1988-04-11
Publication date: 1989-10-19

Description

[Brief explanation of drawings]

第１図は本考案の内燃機関点火装置の望ましい
一実施例における要部概略構成図、第２図は第１
図中の各回路点における波形をタイム・チヤート
により説明する説明図、第３図は本考案と従来例
との対比を示す説明図、である。図中、１は点火信号発生回路、２は単安定マル
チ・バイブレータ、３は発振回路、４はスイツチ
ング手段、５は点火トランス、６は整流手段、７
は負荷容量、８は点火プラグ、である。 FIG. 1 is a schematic diagram of the main parts of a preferred embodiment of the internal combustion engine ignition system of the present invention, and FIG.
FIG. 3 is an explanatory diagram illustrating waveforms at each circuit point in the figure using a time chart, and FIG. 3 is an explanatory diagram showing a comparison between the present invention and a conventional example. In the figure, 1 is an ignition signal generation circuit, 2 is a monostable multi-vibrator, 3 is an oscillation circuit, 4 is a switching means, 5 is an ignition transformer, 6 is a rectifier means, 7
is the load capacity, and 8 is the spark plug.

Claims

[Claims for Utility Model Registration] (1) To selectively interrupt the primary current flowing through the ignition transformer and the primary coil of the ignition transformer,
A switching means capable of switching from an on state to an off state, and an ignition plug that generates discharge sparks based on a high voltage generated in the secondary coil of the ignition transformer when the primary current is cut off by switching the switching means to the off state. and an ignition signal generation circuit that keeps the switching means in the OFF state for a period longer than the time required from the start to completion of discharge in the ignition plug in accordance with the ignition timing of the internal combustion engine. An internal combustion engine ignition system, wherein the switching means is turned on for a certain period of time, at least after completion of effective discharge in the spark plug and before the switching means is turned back on by the ignition signal generating circuit. a circuit that turns on and off at least a plurality of times at a cycle shorter than the ignition cycle; rectifies the high voltage induced on the secondary side of the ignition transformer as the switching means turns on and off at least a plurality of times; and a rectifying means for charging a load capacity in parallel with the spark plug. (2) The internal combustion engine ignition system according to claim 1, wherein the load capacity parallel to the spark plug is a floating capacity existing around the spark plug. (3) The internal combustion engine ignition system according to claim 1, characterized in that the load capacity in parallel with the spark plug is obtained by a capacitor as a tangible part intentionally connected in parallel with the spark plug.