JPH0196585U - - Google Patents
Info
- Publication number
- JPH0196585U JPH0196585U JP19186187U JP19186187U JPH0196585U JP H0196585 U JPH0196585 U JP H0196585U JP 19186187 U JP19186187 U JP 19186187U JP 19186187 U JP19186187 U JP 19186187U JP H0196585 U JPH0196585 U JP H0196585U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- current detection
- detection circuit
- electromagnetic valve
- valve drive
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Fuel-Injection Apparatus (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Magnetically Actuated Valves (AREA)
Description
第１図は本考案による電磁弁駆動回路の一実施
例の構成図、第２図は作用説明の波形図、第３図
は従来の電磁弁駆動回路図、第４図は従来装置の
作用説明の波形図である。
１……電磁弁コイル、２，３……出力トランジ
スタ、４……入力端子、５……電流検出抵抗、６
……ピーク電流検出回路、７……ホールド電流検
出回路、Ｆ，Ｆ……フリツプ・フロツプ回路、Ｚ
Ｄ……ツエナ・ダイオード、Ｄ……フライホイー
ル・ダイオード。
Fig. 1 is a configuration diagram of an embodiment of the solenoid valve drive circuit according to the present invention, Fig. 2 is a waveform diagram explaining the operation, Fig. 3 is a diagram of the conventional solenoid valve drive circuit, and Fig. 4 is an explanation of the operation of the conventional device. FIG. 1... Solenoid valve coil, 2, 3... Output transistor, 4... Input terminal, 5... Current detection resistor, 6
...Peak current detection circuit, 7 ...Hold current detection circuit, F, F...Flip-flop circuit, Z
D...Zena diode, D...Flywheel diode.
Claims (1)
接続し、前記コイル電流値をピーク電流検出回路
とホールド電流検出回路とを用いて所定値に維持
するよう制御する内燃機関用の電磁弁駆動回路に
おいて、前記ピーク電流検出回路及びホールド電
流検出回路の出力段にフリツプ・フロツプ回路を
接続して、この出力にて出力トランジスタのオン
・オフを制御すると共に、電磁弁コイルの一端に
接続するサージ吸収用ツエナ・ダイオード回路に
電流検出抵抗を接続することを特徴とする電磁弁
駆動回路。 In the electromagnetic valve drive circuit for an internal combustion engine, the electromagnetic valve drive circuit for an internal combustion engine connects output transistors across the electromagnetic valve coil, and controls the coil current value to be maintained at a predetermined value using a peak current detection circuit and a hold current detection circuit. A flip-flop circuit is connected to the output stage of the peak current detection circuit and the hold current detection circuit, and this output controls the on/off of the output transistor, and a surge absorbing zener circuit is connected to one end of the solenoid valve coil. A solenoid valve drive circuit characterized by connecting a current detection resistor to a diode circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987191861U JPH0632534Y2 (en) | 1987-12-17 | 1987-12-17 | Solenoid valve drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987191861U JPH0632534Y2 (en) | 1987-12-17 | 1987-12-17 | Solenoid valve drive circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0196585U true JPH0196585U (en) | 1989-06-27 |
| JPH0632534Y2 JPH0632534Y2 (en) | 1994-08-24 |
Family
ID=31482752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987191861U Expired - Lifetime JPH0632534Y2 (en) | 1987-12-17 | 1987-12-17 | Solenoid valve drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0632534Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014020287A (en) * | 2012-07-18 | 2014-02-03 | Denso Corp | Fuel injection control device |
| JP2015130763A (en) * | 2014-01-08 | 2015-07-16 | 株式会社デンソー | Fuel injection valve drive device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5614668A (en) * | 1979-07-17 | 1981-02-12 | Japan Electronic Control Syst Co Ltd | Current controller for solenoid valve |
-
1987
- 1987-12-17 JP JP1987191861U patent/JPH0632534Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5614668A (en) * | 1979-07-17 | 1981-02-12 | Japan Electronic Control Syst Co Ltd | Current controller for solenoid valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014020287A (en) * | 2012-07-18 | 2014-02-03 | Denso Corp | Fuel injection control device |
| JP2015130763A (en) * | 2014-01-08 | 2015-07-16 | 株式会社デンソー | Fuel injection valve drive device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0632534Y2 (en) | 1994-08-24 |
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