JPH0351164U - - Google Patents
Info
- Publication number
- JPH0351164U JPH0351164U JP11201089U JP11201089U JPH0351164U JP H0351164 U JPH0351164 U JP H0351164U JP 11201089 U JP11201089 U JP 11201089U JP 11201089 U JP11201089 U JP 11201089U JP H0351164 U JPH0351164 U JP H0351164U
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- pressure
- passage
- closed
- injection
- 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
- 239000000446 fuel Substances 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案実施例による燃料噴射装置の全
体構成を示すブロツク図、第２図は第１図に示し
た構成の作用を説明するための線図である。
１……燃料噴射装置、２……プランジヤ、３…
…燃料圧送通路、４……噴射ノズル、４Ａ……噴
孔、５……電磁弁、５Ａ……密閉空間、５Ｂ……
吸い戻し弁、５Ｃ……アクチユエータ、６……吸
い戻し弁用のリターンスプリング、８……制御部
。
FIG. 1 is a block diagram showing the overall structure of a fuel injection system according to an embodiment of the present invention, and FIG. 2 is a diagram for explaining the operation of the structure shown in FIG. 1...Fuel injection device, 2...Plunger, 3...
... Fuel pressure passage, 4 ... Injection nozzle, 4A ... Nozzle hole, 5 ... Solenoid valve, 5A ... Sealed space, 5B ...
Suction back valve, 5C... Actuator, 6... Return spring for the sucking back valve, 8... Control unit.
Claims (1)
る燃料通路の一部に、この通路に連通する密閉空
間を有し、この空間と上記通路との連通部を開閉
可能な吸い戻し弁をアクチユエータに備えた電磁
弁を配置し、 上記電磁弁は、上記プランジヤの上限位置への
変位時、上記連通部を閉じた状態にある第１の態
位から、その連通部を開放して吸い戻し弁を連通
部から離間させる第２の態位に変化することで、
上記燃料圧送通路内の圧力を負圧化し、その燃料
圧送通路内の圧力により開放する噴射ノズルの針
弁を閉鎖させて燃料噴射を一旦休止させ、再度燃
料圧送通路の圧力が上昇することで燃料の再噴射
が行なわれた後には、段階的な第１の態位への復
帰を行なわせることを特徴とする燃料噴射装置。[Claims for Utility Model Registration] A part of the fuel passage through which the fuel is pumped by the plunger in the fuel injection pump has a sealed space communicating with this passage, and the communication part between this space and the passage can be opened and closed. A solenoid valve having a return valve in the actuator is disposed, and the solenoid valve opens the communication portion from a first position in which the communication portion is closed when the plunger is displaced to the upper limit position. By changing to the second position in which the suction valve is separated from the communication part,
The pressure in the fuel pressure passage is reduced to negative pressure, the needle valve of the injection nozzle, which is opened by the pressure in the fuel pressure passage, is closed to temporarily stop fuel injection, and the pressure in the fuel pressure passage increases again, causing the fuel A fuel injection device characterized in that after re-injection of fuel is performed, a stepwise return to a first position is performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11201089U JPH0351164U (en) | 1989-09-25 | 1989-09-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11201089U JPH0351164U (en) | 1989-09-25 | 1989-09-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0351164U true JPH0351164U (en) | 1991-05-17 |
Family
ID=31660464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11201089U Pending JPH0351164U (en) | 1989-09-25 | 1989-09-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0351164U (en) |
-
1989
- 1989-09-25 JP JP11201089U patent/JPH0351164U/ja active Pending
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