JPS60124547U - Protection circuit for electromagnetic fuel injection valve drive circuit - Google Patents
Protection circuit for electromagnetic fuel injection valve drive circuitInfo
- Publication number
- JPS60124547U JPS60124547U JP1024684U JP1024684U JPS60124547U JP S60124547 U JPS60124547 U JP S60124547U JP 1024684 U JP1024684 U JP 1024684U JP 1024684 U JP1024684 U JP 1024684U JP S60124547 U JPS60124547 U JP S60124547U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- fuel injection
- injection valve
- valve drive
- electromagnetic fuel
- 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
Links
Landscapes
- 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
第１図は電磁式燃料噴射弁駆動回路の従来例を示す回路
図、第２図は本考案の一実施例を示す回路図である。
１・・・・・・バッテリ、２・・・・・・弁駆動用ソレ
ノイド、−３・・・・・・パワートランジスタ、１２・
・・・・・コンデンサ、１３・・・・・、・比較器、１
７・・・・・・トランジスタ、１８・・・・・・リレー
。FIG. 1 is a circuit diagram showing a conventional example of an electromagnetic fuel injection valve drive circuit, and FIG. 2 is a circuit diagram showing an embodiment of the present invention. 1...Battery, 2...Valve drive solenoid, -3...Power transistor, 12...
...Capacitor, 13...Comparator, 1
7...Transistor, 18...Relay.
Claims (1)
駆動時制御装置によりスイッチング制御されて前記弁駆
動用ソレノイドに流れる電流を制御するパワートランジ
スタと、により直列回路を形成してなる電磁式燃料噴射
弁駆動回路において、前記弁駆動用ソレノイドの電流値
を検出する電流検出手段と、該電流検出手段により検出
された電流値が所定値以上のときに前記直列回路を開、
路する開路手段と、を設けたことを特徴とする電磁
式燃料噴射弁駆動回路の保護回路。An electromagnetic type in which a series circuit is formed by a power source, a valve driving solenoid of an electromagnetic fuel injection valve, and a power transistor whose switching is controlled by a valve driving control device to control the current flowing to the valve driving solenoid. In the fuel injection valve drive circuit, current detection means detects a current value of the valve drive solenoid, and the series circuit is opened when the current value detected by the current detection means is equal to or higher than a predetermined value;
A protection circuit for an electromagnetic fuel injection valve drive circuit, characterized in that it is provided with a circuit opening means for opening the circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1024684U JPS60124547U (en) | 1984-01-30 | 1984-01-30 | Protection circuit for electromagnetic fuel injection valve drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1024684U JPS60124547U (en) | 1984-01-30 | 1984-01-30 | Protection circuit for electromagnetic fuel injection valve drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60124547U true JPS60124547U (en) | 1985-08-22 |
Family
ID=30491249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1024684U Pending JPS60124547U (en) | 1984-01-30 | 1984-01-30 | Protection circuit for electromagnetic fuel injection valve drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60124547U (en) |
-
1984
- 1984-01-30 JP JP1024684U patent/JPS60124547U/en active Pending
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