JPH0440152U - - Google Patents
Info
- Publication number
- JPH0440152U JPH0440152U JP8187690U JP8187690U JPH0440152U JP H0440152 U JPH0440152 U JP H0440152U JP 8187690 U JP8187690 U JP 8187690U JP 8187690 U JP8187690 U JP 8187690U JP H0440152 U JPH0440152 U JP H0440152U
- Authority
- JP
- Japan
- Prior art keywords
- spool valve
- fuel
- chamber
- valve
- opening pressure
- 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.)
- Granted
Links
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 239000000446 fuel Substances 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は、本考案の燃料噴射装置に用いられる
噴射ノズルのラツク移動に伴うスプールバルブの
回転を示す図、第２図は、本考案の噴射ノズルの
噴射量と噴射時期の概略を示す線図、第３図は、
本考案に用いられる噴射ノズルの、あるスプール
バルブ位置における作動状態を示す図、第４図は
、従来例の燃料噴射装置に用いられる噴射ノズル
の主要構成を示す模型図である。
１……噴射ノズル本体、２……スプールバルブ
、３……スプールバルブ内孔、４……ポンプ側燃
料入路、５……スプールバルブ室、６……パイロ
ツト用送油溝、７……主噴射用送油溝、８……パ
イロツト燃料通路、９……主噴射燃料通路、１３
……開弁圧室、１４……針弁。
Fig. 1 is a diagram showing the rotation of the spool valve as the injection nozzle is easily moved used in the fuel injection device of the present invention, and Fig. 2 is a diagram showing the outline of the injection amount and injection timing of the injection nozzle of the present invention. Figure 3 is
FIG. 4, which is a diagram showing the operating state of the injection nozzle used in the present invention at a certain spool valve position, is a model diagram showing the main structure of the injection nozzle used in a conventional fuel injection device. 1... Injection nozzle body, 2... Spool valve, 3... Spool valve inner hole, 4... Pump side fuel inlet, 5... Spool valve chamber, 6... Pilot oil feed groove, 7... Main Injection oil feed groove, 8...Pilot fuel passage, 9...Main injection fuel passage, 13
...Valve opening pressure chamber, 14...needle valve.
Claims (1)
めの開弁圧室に接続される燃料通路の一部に、ポ
ンプ側燃料入路を作動圧入路として接続されてい
るスプールバルブ室を設け、このスプールバルブ
室内には、ポンプ側燃料入路側から上記スプール
バルブ室周面に向けて開口した孔が設けられたス
プールバルブが回転可能でかつ摺動可能に挿嵌さ
れており、上記スプールバルブ室内周面には、そ
の面上に沿つて上記スプールバルブの初期位置か
らの変位始端側に小幅に設定されかつその幅が変
化しているパイロツト用送油溝と、上記スプール
バルブの変位終端側に上記パイロツト用送油溝よ
りも大幅に設定された主噴射用送油溝をそれぞれ
設け、これらの送油溝は、燃料通路によつて上記
針弁の開弁圧室に接続されていることを特徴とし
た噴射用ノズルを備えた燃料噴射装置。 A spool valve chamber is provided in a part of the fuel passage connected to the valve opening pressure chamber for setting the valve opening pressure of the needle valve in the injection nozzle, and the spool valve chamber is connected to the pump side fuel input passage as an operating pressure input passage. A spool valve is rotatably and slidably inserted into the spool valve chamber, and has a hole that opens from the fuel inlet side of the pump toward the periphery of the spool valve chamber. Along the surface, there is a pilot oil feed groove set to a small width on the displacement start side of the spool valve from the initial position and whose width changes, and the above-mentioned pilot oil groove on the displacement end side of the spool valve. Main injection oil feeding grooves are provided which are wider than the pilot oil feeding grooves, and these oil feeding grooves are connected to the valve opening pressure chamber of the needle valve by a fuel passage. A fuel injection device equipped with an injection nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8187690U JPH087093Y2 (en) | 1990-07-31 | 1990-07-31 | Fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8187690U JPH087093Y2 (en) | 1990-07-31 | 1990-07-31 | Fuel injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0440152U true JPH0440152U (en) | 1992-04-06 |
| JPH087093Y2 JPH087093Y2 (en) | 1996-02-28 |
Family
ID=31628199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8187690U Expired - Lifetime JPH087093Y2 (en) | 1990-07-31 | 1990-07-31 | Fuel injector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH087093Y2 (en) |
-
1990
- 1990-07-31 JP JP8187690U patent/JPH087093Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH087093Y2 (en) | 1996-02-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FR2450358A1 (en) | INJECTION VALVE OF AN INTERNAL COMBUSTION ENGINE WITH RECIPROCATING PISTONS | |
| JPH0440152U (en) | ||
| JPH0440151U (en) | ||
| JPH0317274U (en) | ||
| JPH0158771U (en) | ||
| JPS6133968U (en) | Fuel injection pump for internal combustion engines | |
| JPH0432255U (en) | ||
| JPS6272470U (en) | ||
| JPS623966U (en) | ||
| JPH01130066U (en) | ||
| JPS58152566U (en) | fuel injection nozzle | |
| JPS628364U (en) | ||
| JPS6392074U (en) | ||
| JPH041662U (en) | ||
| JPS6432435U (en) | ||
| JPS6334355U (en) | ||
| JPH0323649U (en) | ||
| JPH03104610U (en) | ||
| JPS6264870U (en) | ||
| JPH01114979U (en) | ||
| JPH0399864U (en) | ||
| JPH02107760U (en) | ||
| JPH024966U (en) | ||
| JPS61192564U (en) | ||
| JPS6180365U (en) |