JPH0280770U - - Google Patents
Info
- Publication number
- JPH0280770U JPH0280770U JP15910488U JP15910488U JPH0280770U JP H0280770 U JPH0280770 U JP H0280770U JP 15910488 U JP15910488 U JP 15910488U JP 15910488 U JP15910488 U JP 15910488U JP H0280770 U JPH0280770 U JP H0280770U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- hole
- spring
- tip
- rear end
- 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 6
- 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図は第１
図の−矢視断面図、第３図および第４図はこ
の考案の他の実施例を示すもので、第３図はその
縦断面図、第４図は第３図の−矢視断面図、
第５図はこの考案のさらに他の実施例を示す要部
の拡大図である。
１……ノズルホルダ、４……ノズル、１１……
ばね収納室（ばね収納室）、１２……ノズルばね
、１５……案内孔、１５ａ……ダンパ室、１６…
…プランジヤ、１７，１９……第２の絞り部、４
２……弁収納孔、４３……針弁、４４……燃料溜
まり、４５……弁座、４６……噴射孔、４７……
第１の絞り部。
Figures 1 and 2 show an embodiment of this invention, with Figure 1 being a longitudinal sectional view and Figure 2 being a vertical cross-sectional view of the device.
3 and 4 show other embodiments of this invention, FIG. 3 is a longitudinal sectional view thereof, and FIG. 4 is a sectional view taken in the direction of FIG. 3. ,
FIG. 5 is an enlarged view of the main parts showing still another embodiment of this invention. 1... Nozzle holder, 4... Nozzle, 11...
Spring storage chamber (spring storage chamber), 12... Nozzle spring, 15... Guide hole, 15a... Damper chamber, 16...
...Plunger, 17, 19...Second throttle part, 4
2... Valve storage hole, 43... Needle valve, 44... Fuel reservoir, 45... Valve seat, 46... Injection hole, 47...
First aperture section.
Claims (1)
たばね収納室と、前記弁収納孔に摺動自在に設け
られた針弁と、前記ばね収納孔に設けられ、前記
針弁を弁収納孔の先端側へ付勢して、前記弁収納
孔の先端部に形成された弁座に着座させるノズル
ばねとを備え、前記弁収納孔の中間部に形成され
た燃料溜まり室に圧送される燃料によつて前記針
弁を前記ノズルばねの付勢力に抗してリフトさせ
、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、前記弁収納孔と前記針弁との
互いの摺動面の少なくとも一方に前記燃料溜まり
室と前記ばね収納室とを連通させる第１の絞り部
を形成し、前記ばね収納室の後端面に前記弁収納
孔と軸線をほぼ一致させて延びる案内孔を形成し
、前記ばね収納室内に、先端部が前記針弁の後端
部に突き当たり、後端部が前記案内孔の先端部に
摺動自在に挿入されたプランジヤを、前記弁収納
孔の軸線方向へ移動自在に設け、このプランジヤ
によつて前記案内孔の底部に区画されたダンパ室
と前記ばね収納室との間にそれらを連通させる第
２の絞り部を設けたことを特徴とする燃料噴射ノ
ズル。 A valve storage hole, a spring storage chamber connected to the rear end of the valve storage hole, a needle valve slidably provided in the valve storage hole, and a needle valve provided in the spring storage hole to accommodate the needle valve. a nozzle spring that urges toward the tip of the valve housing hole and seats on a valve seat formed at the tip of the valve housing hole; In the fuel injection nozzle, the needle valve is lifted against the biasing force of the nozzle spring by the fuel, and the fuel is injected from the injection hole. A first constriction portion is formed on at least one of the sliding surfaces to communicate the fuel reservoir chamber and the spring storage chamber, and a guide extends on the rear end surface of the spring storage chamber so that its axis substantially coincides with the valve storage hole. A plunger is inserted into the spring storage chamber, the tip of which abuts against the rear end of the needle valve, and the rear end of which is slidably inserted into the tip of the guide hole. The damper chamber is movable in the axial direction, and is characterized by being provided with a second throttle section that communicates between the damper chamber defined at the bottom of the guide hole by the plunger and the spring storage chamber. fuel injection nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15910488U JPH0280770U (en) | 1988-12-07 | 1988-12-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15910488U JPH0280770U (en) | 1988-12-07 | 1988-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0280770U true JPH0280770U (en) | 1990-06-21 |
Family
ID=31440022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15910488U Pending JPH0280770U (en) | 1988-12-07 | 1988-12-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0280770U (en) |
-
1988
- 1988-12-07 JP JP15910488U patent/JPH0280770U/ja active Pending
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