JPH0296466U - - Google Patents
Info
- Publication number
- JPH0296466U JPH0296466U JP383589U JP383589U JPH0296466U JP H0296466 U JPH0296466 U JP H0296466U JP 383589 U JP383589 U JP 383589U JP 383589 U JP383589 U JP 383589U JP H0296466 U JPH0296466 U JP H0296466U
- Authority
- JP
- Japan
- Prior art keywords
- port
- valve
- fuel
- hole
- nozzle
- 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 12
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図はこの考案の一実施例を示す縦断面図、
第２図はこの考案の他の実施例を示す要部の拡大
断面図である。
１…ノズル本体、７…切換弁、２２…ノズルば
ね、５２…針弁、５３…弁座、５４…燃料溜まり
、５５…噴射孔、７１…弁孔、７２…弁体、７６
ａ…第１のポート、７６ｂ…第２のポート、７６
ｃ…第３のポート、７６ｄ…第４のポート。
FIG. 1 is a longitudinal sectional view showing an embodiment of this invention.
FIG. 2 is an enlarged sectional view of main parts showing another embodiment of this invention. DESCRIPTION OF SYMBOLS 1... Nozzle body, 7... Switching valve, 22... Nozzle spring, 52... Needle valve, 53... Valve seat, 54... Fuel reservoir, 55... Injection hole, 71... Valve hole, 72... Valve body, 76
a...First port, 76b...Second port, 76
c...Third port, 76d...Fourth port.
Claims (1)
れた燃料溜まりに燃料が圧送され、この圧送され
た燃料によつて針弁をノズルばねの付勢力に抗し
て弁座からリフトさせることにより、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、前記燃料噴射ポンプに接続される第１のポ
ート、前記燃料溜まりにそれぞれ接続される第２
、第３のポート、および燃料の低圧側に接続され
る第４のポートがそれぞれ開口する弁孔と、この
弁孔に摺動自在に設けられ、弁ばねによつて弁孔
の一端側の閉弁位置に位置せしめられるとともに
、前記第１のポートから弁孔内に圧送される燃料
によつて前記弁ばねの付勢力に抗して弁孔の他端
側の開弁位置に位置せしめられる弁体とを有する
切換弁を前記ノズル本体に設け、前記第１、第２
、第３および第４のポートを、前記弁体が開弁位
置に位置している際には、第１のポートと第２の
ポートとが連通されるとともに、第３のポートと
第４のポートとが遮断され、前記弁体が閉弁位置
に位置している際には、第１のポートと第２のポ
ートとが遮断されるとともに、第３のポートと第
４のポートとが連通されるように配置したことを
特徴とする燃料噴射ノズル。 Fuel is pumped from the fuel injection pump to the fuel reservoir formed inside the nozzle body, and the pumped fuel lifts the needle valve from the valve seat against the urging force of the nozzle spring, thereby opening the injection hole. A first port connected to the fuel injection pump, a second port connected to the fuel reservoir, and a second port connected to the fuel reservoir.
, a third port, and a fourth port connected to the low pressure side of the fuel are respectively open, and the valve hole is slidably provided, and one end of the valve hole is closed by a valve spring. a valve that is located at a valve position and is also located at an open position on the other end side of the valve hole against the biasing force of the valve spring by the fuel pumped into the valve hole from the first port; a switching valve having a body is provided in the nozzle body, and a switching valve having a
, the third port and the fourth port are connected to each other, and when the valve body is located in the valve open position, the first port and the second port communicate with each other, and the third port and the fourth port communicate with each other. When the port is shut off and the valve body is located in the closed position, the first port and the second port are shut off, and the third port and the fourth port are communicated with each other. A fuel injection nozzle characterized in that the fuel injection nozzle is arranged so as to
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP383589U JPH0296466U (en) | 1989-01-19 | 1989-01-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP383589U JPH0296466U (en) | 1989-01-19 | 1989-01-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0296466U true JPH0296466U (en) | 1990-08-01 |
Family
ID=31205820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP383589U Pending JPH0296466U (en) | 1989-01-19 | 1989-01-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0296466U (en) |
-
1989
- 1989-01-19 JP JP383589U patent/JPH0296466U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0296466U (en) | ||
| JPH0317274U (en) | ||
| JPH0212063U (en) | ||
| JPS6336662U (en) | ||
| JPS63102968U (en) | ||
| JPH0449660U (en) | ||
| JPS5818166U (en) | pressure regulating valve | |
| JPS6365855U (en) | ||
| JPH0424659U (en) | ||
| JPS63168266U (en) | ||
| JPH0377009U (en) | ||
| JPS6317863U (en) | ||
| JPS6324363U (en) | ||
| JPS61130760U (en) | ||
| JPS60187365U (en) | Throttle type fuel injection nozzle | |
| JPS62175261U (en) | ||
| JPH01166762U (en) | ||
| JPH0269064U (en) | ||
| JPH0283371U (en) | ||
| JPS6383459U (en) | ||
| JPS6443202U (en) | ||
| JPH01114979U (en) | ||
| JPS6248869U (en) | ||
| JPS6186565U (en) | ||
| JPS61167471U (en) |