JPH0442242U - - Google Patents
Info
- Publication number
- JPH0442242U JPH0442242U JP8386790U JP8386790U JPH0442242U JP H0442242 U JPH0442242 U JP H0442242U JP 8386790 U JP8386790 U JP 8386790U JP 8386790 U JP8386790 U JP 8386790U JP H0442242 U JPH0442242 U JP H0442242U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- circuit
- fuel injection
- combustion engine
- internal combustion
- 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
- 239000000446 fuel Substances 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims 5
- 230000007423 decrease Effects 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は本考案の実施例の電気的な構成を示し
た回路図、第２図は機関の低速時における第１図
の各部の電圧波形を概略的に示した波形図、第３
図は本考案の他の実施例を示した回路図、第４図
は従来の燃料噴射装置の電気的な構成を示した回
路図、第５図は第４図の各部の電圧波形を示した
波形図、第６図は第４図の燃料噴射装置において
バツテリを発電機で置き換えた場合の構成を示し
た回路図、第７図は機関の高速時における第６図
の各部の電圧波形を示した波形図、第８図は機関
の低速時における第６図の各部の電圧波形を示し
た波形図である。
１……主電源回路、１０３……発電コイル、１
０４……整流器、１０５……定電圧回路、２……
インジエクタ、３……スイツチング回路、４……
スイツチ制御回路、５……制御電源回路、５０１
……定電圧回路、５０２……コンデンサ、５０５
……電池。
Fig. 1 is a circuit diagram showing the electrical configuration of an embodiment of the present invention, Fig. 2 is a waveform diagram schematically showing voltage waveforms at various parts of Fig. 1 when the engine is running at low speed, and Fig. 3 is a waveform diagram schematically showing voltage waveforms at various parts of Fig.
Figure 4 is a circuit diagram showing another embodiment of the present invention, Figure 4 is a circuit diagram showing the electrical configuration of a conventional fuel injection device, and Figure 5 shows voltage waveforms at various parts of Figure 4. Waveform diagram, Figure 6 is a circuit diagram showing the configuration when the battery is replaced with a generator in the fuel injection system of Figure 4, Figure 7 shows the voltage waveforms of each part of Figure 6 when the engine is at high speed. FIG. 8 is a waveform diagram showing voltage waveforms at various parts of FIG. 6 when the engine is running at low speed. 1...Main power circuit, 103...Generating coil, 1
04... Rectifier, 105... Constant voltage circuit, 2...
Injector, 3... Switching circuit, 4...
Switch control circuit, 5... Control power supply circuit, 501
... Constant voltage circuit, 502 ... Capacitor, 505
……battery.
Claims (1)
間燃料を噴射するインジエクタと、前記主電源回
路からインジエクタに供給される駆動電流をオン
オフするように設けられていてトリガ信号が与え
られている間導通して前記インジエクタに駆動電
流を供給するスイツチング回路と、燃料噴射指令
信号が与えられたときに前記スイツチング回路に
所定の時間幅のトリガ信号を与えるスイツチ制御
回路と、前記スイツチ制御回路の電源端子に電源
電圧を与える制御電源回路とを備えてなり、前記
スイツチ制御回路は電源端子に所定の動作可能レ
ベル以上の電源電圧が与えられているときに動作
可能となつて前記燃料噴射指令信号が与えられて
いる間前記トリガ信号を発生する内燃機関用燃料
噴射装置において、 前記主電源回路は内燃機関により駆動される発
電機の出力を電源とする回路からなり、 前記制御電源回路は、電力を蓄積する蓄電手段
を備えていて、前記主電源回路の出力の低下時に
も前記蓄電手段を電源として前記スイツチ制御回
路に前記動作可能レベル以上の電源電圧を供給す
るように構成されていることを特徴とする内燃機
関用燃料噴射装置。 (2) 前記蓄電手段は前記主電源回路の出力によ
り充電されるコンデンサからなつている請求項１
記載に記載の内燃機関用燃料噴射装置。 (3) 前記蓄電手段は電池からなつている請求項
１に記載の内燃機関用燃料噴射装置。[Claims for Utility Model Registration] (1) An injector that injects fuel while a drive current is applied from the main power circuit, and an injector that is provided to turn on and off the drive current supplied to the injector from the main power circuit. a switching circuit that is conductive while a trigger signal is applied to supply a drive current to the injector; and a switch control circuit that provides a trigger signal of a predetermined time width to the switching circuit when a fuel injection command signal is applied. and a control power supply circuit that applies a power supply voltage to a power supply terminal of the switch control circuit, and the switch control circuit is operable when a power supply voltage equal to or higher than a predetermined operable level is applied to the power supply terminal. In the fuel injection device for an internal combustion engine that generates the trigger signal while the fuel injection command signal is applied, the main power supply circuit includes a circuit whose power source is the output of a generator driven by the internal combustion engine, The control power supply circuit is equipped with a power storage means for storing electric power, and is configured to use the power storage means as a power source to supply a power supply voltage higher than the operable level to the switch control circuit even when the output of the main power supply circuit decreases. A fuel injection device for an internal combustion engine, characterized in that it is configured as follows. (2) Claim 1, wherein the electricity storage means is comprised of a capacitor charged by the output of the main power supply circuit.
A fuel injection device for an internal combustion engine according to the description. (3) The fuel injection device for an internal combustion engine according to claim 1, wherein the power storage means is a battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8386790U JPH089393Y2 (en) | 1990-08-08 | 1990-08-08 | Fuel injection device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8386790U JPH089393Y2 (en) | 1990-08-08 | 1990-08-08 | Fuel injection device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0442242U true JPH0442242U (en) | 1992-04-09 |
| JPH089393Y2 JPH089393Y2 (en) | 1996-03-21 |
Family
ID=31631895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8386790U Expired - Lifetime JPH089393Y2 (en) | 1990-08-08 | 1990-08-08 | Fuel injection device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH089393Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002256962A (en) * | 2001-02-26 | 2002-09-11 | Mikuni Corp | Power supply for internal combustion engine |
| JP4378224B2 (en) * | 2004-06-04 | 2009-12-02 | 株式会社ミクニ | Power supply |
-
1990
- 1990-08-08 JP JP8386790U patent/JPH089393Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH089393Y2 (en) | 1996-03-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |