JPH0269064U - - Google Patents
Info
- Publication number
- JPH0269064U JPH0269064U JP14828088U JP14828088U JPH0269064U JP H0269064 U JPH0269064 U JP H0269064U JP 14828088 U JP14828088 U JP 14828088U JP 14828088 U JP14828088 U JP 14828088U JP H0269064 U JPH0269064 U JP H0269064U
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- port
- fuel
- nozzle body
- valve
- 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 7
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図および第２図はこの考案の一実施例を示
すもので、第１図はその縦断面図、第２図は切換
弁を示す縦断面図である。
１……ノズルホルダ、１ａ……ばね収納孔（圧
力導入室）、１ｂ……戻し通路（圧力導入室）、
２……ノズルばね、８……ノズル本体、８ａ……
針弁、８ｂ……弁座、８ｃ……噴射孔、１１……
切換弁、１１３……第１のポート、１１４……第
２のポート、１１５……第３のポート、Ｐ……燃
料加圧手段。
FIGS. 1 and 2 show an embodiment of this invention, with FIG. 1 being a longitudinal sectional view thereof, and FIG. 2 being a longitudinal sectional view showing a switching valve. 1... Nozzle holder, 1a... Spring storage hole (pressure introduction chamber), 1b... Return passage (pressure introduction chamber),
2... Nozzle spring, 8... Nozzle body, 8a...
Needle valve, 8b... Valve seat, 8c... Injection hole, 11...
Switching valve, 113...first port, 114...second port, 115...third port, P...fuel pressurizing means.
Claims (1)
と、このノズルホルダの下端部に設けられ、内部
に前記ノズルばねによつて弁座に着座せしめられ
る針弁を有するノズル本体とを備え、燃料加圧手
段からノズル本体に圧送される燃料によつて針弁
をノズルばねの付勢力に抗してリフトさせること
により、ノズル本体の噴射孔から燃料を噴射させ
るようにした燃料噴射ノズルにおいて、前記ノズ
ルホルダに、内部に導入される燃料の圧力によつ
て前記針弁を着座移動方向へ押圧する圧力導入室
を形成するとともに、前記ノズルホルダに、前記
燃料加圧手段に接続される第１のポートと、前記
ノズル本体に接続される第２のポートと、前記圧
力導入室に接続される第３のポートとを有し、第
１のポートと第２のポートとの間と、第２のポー
トと第３のポートとの間とのいずれか一方を開状
態とし、他方を閉状態とする切換弁を設けたこと
を特徴とする燃料噴射ノズル。 The nozzle body is equipped with a nozzle holder having a nozzle spring provided at its lower end, and a nozzle body having a needle valve provided at the lower end of the nozzle holder and seated on a valve seat by the nozzle spring. In the fuel injection nozzle, the fuel is injected from the injection hole of the nozzle body by lifting the needle valve against the biasing force of the nozzle spring by the fuel pumped from the means to the nozzle body. a pressure introduction chamber for pressing the needle valve in the seating movement direction by the pressure of the fuel introduced therein; and a first port connected to the fuel pressurizing means in the nozzle holder; , a second port connected to the nozzle body, and a third port connected to the pressure introduction chamber, and between the first port and the second port, and between the second port and the second port. A fuel injection nozzle characterized by being provided with a switching valve that opens one side between the valve and the third port and closes the other side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14828088U JPH0269064U (en) | 1988-11-14 | 1988-11-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14828088U JPH0269064U (en) | 1988-11-14 | 1988-11-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0269064U true JPH0269064U (en) | 1990-05-25 |
Family
ID=31419456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14828088U Pending JPH0269064U (en) | 1988-11-14 | 1988-11-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0269064U (en) |
-
1988
- 1988-11-14 JP JP14828088U patent/JPH0269064U/ja active Pending