JPH0264752U - - Google Patents
Info
- Publication number
- JPH0264752U JPH0264752U JP14271688U JP14271688U JPH0264752U JP H0264752 U JPH0264752 U JP H0264752U JP 14271688 U JP14271688 U JP 14271688U JP 14271688 U JP14271688 U JP 14271688U JP H0264752 U JPH0264752 U JP H0264752U
- Authority
- JP
- Japan
- Prior art keywords
- injection
- pipe
- fuel
- valve
- pilot
- 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
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 239000000446 fuel Substances 0.000 claims description 7
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims 2
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
Landscapes
- High-Pressure Fuel Injection Pump Control (AREA)
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案の第１実施例を示す機構図、第
２図は第１図の各信号比較特性図、第３図は第１
図の噴射圧力と針弁リフトの波形比較特性図、第
４図は第２実施例の機構図、第５図は従来例の機
構図、第６図は第５図の噴射圧力と針弁リフトの
波形比較特性図、第７図は他の従来例の機構図、
第８図は第７図の電磁弁の応答模式図である。
２：高圧ポンプ、４：蓄圧器、５：高圧作動油
パイプ、６：管制弁、７：主噴射用ピストン、８
：燃料供給パイプ、９：メータリング弁、１１：
噴射パイプ、１２：燃料弁、１４：分岐路、１５
：パイロツト用電磁弁、１７：パイロツト噴射用
パイプ、１８，１９：逆止弁、２０：パイロツト
噴射用プランジヤ装置。
Fig. 1 is a mechanism diagram showing the first embodiment of the present invention, Fig. 2 is a comparison characteristic diagram of each signal in Fig. 1, and Fig. 3 is a diagram showing the characteristics of each signal in Fig. 1.
Figure 4 is a mechanical diagram of the second embodiment, Figure 5 is a mechanism diagram of the conventional example, and Figure 6 is the injection pressure and needle valve lift of Figure 5. Figure 7 is a diagram of the waveform comparison characteristics of another conventional example.
FIG. 8 is a schematic response diagram of the solenoid valve shown in FIG. 7. 2: High pressure pump, 4: Pressure accumulator, 5: High pressure hydraulic oil pipe, 6: Control valve, 7: Main injection piston, 8
: Fuel supply pipe, 9: Metering valve, 11:
Injection pipe, 12: Fuel valve, 14: Branch path, 15
: Pilot solenoid valve, 17: Pilot injection pipe, 18, 19: Check valve, 20: Pilot injection plunger device.
Claims (1)
噴射パイプ間に介装された主噴射用ピストンに、
高圧ポンプ付き蓄圧器を高圧作動油パイプと主噴
射時期の規定用管制弁を介して連設した燃料噴射
装置において、前記高圧作動油パイプの分岐路に
切換え制御されて主噴射の少し前に開路するパイ
ロツト用電磁弁を設け、該電磁弁と前記噴射パイ
プに逆止弁を設けて連設されたパイロツト噴射用
パイプ間に、高圧パイロツト圧で作動される排油
リード付きプランジヤと、該プランジヤで開閉さ
れる排油孔および供給燃料を吐出するプランジヤ
室を有するパイロツト噴射用プランジヤ装置を設
けたことを特徴とする燃料噴射装置。 The main injection piston is interposed between the fuel supply pipe with metering valve and the injection pipe of the fuel valve.
In a fuel injection system in which a pressure accumulator with a high-pressure pump is connected via a high-pressure hydraulic oil pipe and a control valve for regulating the main injection timing, the branching path of the high-pressure hydraulic oil pipe is controlled to open slightly before the main injection. A pilot solenoid valve is provided, and a plunger with an oil drain lead operated by high pilot pressure is provided between the solenoid valve and the pilot injection pipe which are connected to each other by providing a check valve in the injection pipe; A fuel injection device comprising a pilot injection plunger device having an oil drain hole that is opened and closed and a plunger chamber that discharges supplied fuel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14271688U JPH0264752U (en) | 1988-11-02 | 1988-11-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14271688U JPH0264752U (en) | 1988-11-02 | 1988-11-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0264752U true JPH0264752U (en) | 1990-05-15 |
Family
ID=31408901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14271688U Pending JPH0264752U (en) | 1988-11-02 | 1988-11-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0264752U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001088364A1 (en) * | 2000-05-17 | 2001-11-22 | Bosch Automotive Systems Corporation | Fuel injection device |
| JP2013529745A (en) * | 2010-06-22 | 2013-07-22 | スカニア シーブイ アクチボラグ | Injection device for injecting first fuel and second fuel in combustion space |
-
1988
- 1988-11-02 JP JP14271688U patent/JPH0264752U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001088364A1 (en) * | 2000-05-17 | 2001-11-22 | Bosch Automotive Systems Corporation | Fuel injection device |
| JP2013529745A (en) * | 2010-06-22 | 2013-07-22 | スカニア シーブイ アクチボラグ | Injection device for injecting first fuel and second fuel in combustion space |
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