JPS6047852U - Drive current control device for electromagnetic fuel injection valves in internal combustion engines - Google Patents

Drive current control device for electromagnetic fuel injection valves in internal combustion engines

Info

Publication number
JPS6047852U
JPS6047852U JP7376483U JP7376483U JPS6047852U JP S6047852 U JPS6047852 U JP S6047852U JP 7376483 U JP7376483 U JP 7376483U JP 7376483 U JP7376483 U JP 7376483U JP S6047852 U JPS6047852 U JP S6047852U
Authority
JP
Japan
Prior art keywords
fuel injection
valve
injection valve
current
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7376483U
Other languages
Japanese (ja)
Inventor
隆明 品川
Original Assignee
日本電子機器株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本電子機器株式会社 filed Critical 日本電子機器株式会社
Priority to JP7376483U priority Critical patent/JPS6047852U/en
Publication of JPS6047852U publication Critical patent/JPS6047852U/en
Pending legal-status Critical Current

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  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

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

【図面の簡単な説明】[Brief explanation of drawings]

、　　第１図Ａは噴射パルスの波形図、第１図Ｂは従来
の駆動電流制御装置による燃料噴射弁の駆動電流波形図
、第２図は本考案の一実施例を示す回路図、第３図は第
２図の各部の信号波形図である。 １・・・燃料噴射弁、２・・・保持用スイッチングトラ
ンジスタ、５・・・開弁電流用トランジスタ、７・・・
・・・コンパレータ、１０・・・ＡＮＤ回路、１１・・
・ＮＯＴ回路二, FIG. 1A is a waveform diagram of an injection pulse, FIG. 1B is a drive current waveform diagram of a fuel injection valve by a conventional drive current control device, FIG. 2 is a circuit diagram showing an embodiment of the present invention, and FIG. The figure is a signal waveform diagram of each part in FIG. 2. DESCRIPTION OF SYMBOLS 1... Fuel injection valve, 2... Switching transistor for holding, 5... Transistor for valve opening current, 7...
...Comparator, 10...AND circuit, 11...
・NOT circuit 2

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 電磁式燃料噴射弁に開弁初期に前記燃料噴射弁を開弁さ
せるための開弁電流を通電し、その後開弁状態を保持さ
せる保持電流を通電してなる電磁式燃料噴射弁の駆動電
流制御装置において、前記開弁電流を燃料噴射弁に通電
する開弁用トランジスタと、該開弁用トランジスタに並
列接続されると共に導通状態で飽和領域になるように設
定され前記保持電流を燃料噴射弁に通電する保持用トラ
ンジスタと、燃料噴射弁に流れる保持電流を検出する手
段と、該手段によって検出される電流値により前記保持
電流を燃料噴射弁に通電するように前記保持用トランジ
スタをＯＮ・ＯＦＦ制御するスイッチング手段と、を設
けたことを特徴とする内燃機関における電磁式燃料噴射
弁の駆動電流側、　御装置。Driving current control of an electromagnetic fuel injection valve by applying a valve opening current to the electromagnetic fuel injection valve to open the fuel injection valve at the initial stage of opening, and then applying a holding current to maintain the valve in the open state. In the device, a valve-opening transistor that supplies the valve-opening current to the fuel injection valve; and a valve-opening transistor that is connected in parallel to the valve-opening transistor and is set to be in a saturation region in a conductive state and supplies the holding current to the fuel injection valve. A holding transistor to be energized, a means for detecting a holding current flowing to the fuel injection valve, and ON/OFF control of the holding transistor so that the holding current is applied to the fuel injection valve based on the current value detected by the means. A control device for a drive current side of an electromagnetic fuel injection valve in an internal combustion engine, characterized in that a switching means is provided to control the driving current of an electromagnetic fuel injection valve in an internal combustion engine.
JP7376483U 1983-05-19 1983-05-19 Drive current control device for electromagnetic fuel injection valves in internal combustion engines Pending JPS6047852U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7376483U JPS6047852U (en) 1983-05-19 1983-05-19 Drive current control device for electromagnetic fuel injection valves in internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7376483U JPS6047852U (en) 1983-05-19 1983-05-19 Drive current control device for electromagnetic fuel injection valves in internal combustion engines

Publications (1)

Publication Number Publication Date
JPS6047852U true JPS6047852U (en) 1985-04-04

Family

ID=30203878

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7376483U Pending JPS6047852U (en) 1983-05-19 1983-05-19 Drive current control device for electromagnetic fuel injection valves in internal combustion engines

Country Status (1)

Country Link
JP (1) JPS6047852U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04287850A (en) * 1991-03-18 1992-10-13 Kokusan Denki Co Ltd Solenoid type fuel injection valve driving method and drive unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04287850A (en) * 1991-03-18 1992-10-13 Kokusan Denki Co Ltd Solenoid type fuel injection valve driving method and drive unit

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