JPH0440151U - - Google Patents
Info
- Publication number
- JPH0440151U JPH0440151U JP8187590U JP8187590U JPH0440151U JP H0440151 U JPH0440151 U JP H0440151U JP 8187590 U JP8187590 U JP 8187590U JP 8187590 U JP8187590 U JP 8187590U JP H0440151 U JPH0440151 U JP H0440151U
- Authority
- JP
- Japan
- Prior art keywords
- spool valve
- chamber
- fuel
- 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 14
- 239000007924 injection Substances 0.000 claims description 14
- 239000000446 fuel Substances 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims 3
- 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
、従来の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 a conventional injection nozzle. 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たパイロツト用
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かつ
その幅が変化している主噴射用送油溝をそれぞれ
設け、これら送油溝にはさまれたスプールバルブ
室周面のスプールバルブの変位方向の幅が変化し
ており、上記送油溝は、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. On the surface, there is a pilot oil groove set narrowly along the surface on the displacement start side of the spool valve from the initial position, and a pilot oil groove set on the displacement end side of the spool valve. Main injection oil feeding grooves are provided, each of which has a significantly different width, and the width of the spool valve chamber circumferential surface sandwiched between these oil feeding grooves in the direction of displacement of the spool valve changes. A fuel injection device equipped with an injection nozzle, wherein the oil feed groove is connected to a valve opening pressure chamber of the needle valve through a fuel passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8187590U JPH089421Y2 (en) | 1990-07-31 | 1990-07-31 | Fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8187590U JPH089421Y2 (en) | 1990-07-31 | 1990-07-31 | Fuel injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0440151U true JPH0440151U (en) | 1992-04-06 |
| JPH089421Y2 JPH089421Y2 (en) | 1996-03-21 |
Family
ID=31628197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8187590U Expired - Lifetime JPH089421Y2 (en) | 1990-07-31 | 1990-07-31 | Fuel injector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH089421Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2355526A3 (en) | 2010-01-14 | 2012-10-31 | Nintendo Co., Ltd. | Computer-readable storage medium having stored therein display control program, display control apparatus, display control system, and display control method |
-
1990
- 1990-07-31 JP JP8187590U patent/JPH089421Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH089421Y2 (en) | 1996-03-21 |
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