JPS63166664U - - Google Patents
Info
- Publication number
- JPS63166664U JPS63166664U JP5875687U JP5875687U JPS63166664U JP S63166664 U JPS63166664 U JP S63166664U JP 5875687 U JP5875687 U JP 5875687U JP 5875687 U JP5875687 U JP 5875687U JP S63166664 U JPS63166664 U JP S63166664U
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- chamber
- needle
- pressure
- main body
- 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
- 239000000446 fuel Substances 0.000 claims description 17
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000009825 accumulation Methods 0.000 claims description 2
- 230000008602 contraction Effects 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 239000002828 fuel tank Substances 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案の第１実施例に係る燃料噴射弁
の縦断面図、第２図は本考案の第２実施例に係る
燃料噴射弁の縦断面図、である。
１，２１……燃料タ噴射弁、２……燃料タンク
、３……ポンプ、５……本体ボデイ、６……噴孔
、７，２７……ニードル、８……プツシユロツド
、１２……燃料供給路、１３……高圧燃料通路、
１４，２３……燃料溜り室、１５，２８……受圧
面、１６……電歪式アクチユエータ、１７，２６
……圧力室、１８，２２……蓄圧室、１９……ク
リアランス、２４…燃料通路、２５……逆止弁。
FIG. 1 is a vertical cross-sectional view of a fuel injection valve according to a first embodiment of the present invention, and FIG. 2 is a vertical cross-sectional view of a fuel injection valve according to a second embodiment of the present invention. 1, 21...Fuel injection valve, 2...Fuel tank, 3...Pump, 5...Main body, 6...Nozzle hole, 7, 27...Needle, 8...Push rod, 12...Fuel supply 13...high pressure fuel passage;
14, 23... Fuel reservoir chamber, 15, 28... Pressure receiving surface, 16... Electrostrictive actuator, 17, 26
... Pressure chamber, 18, 22 ... Pressure accumulation chamber, 19 ... Clearance, 24 ... Fuel passage, 25 ... Check valve.
Claims (1)
前記噴孔を開閉可能に挿入され、開作動用の受圧
面を有するニードルと、前記本体ボデイ内の前記
ニードルの受圧面周りに形成され、供給されてく
る燃料を一時的に収容する燃料溜り室と、伸縮作
動する圧電素子を用いた電歪式アクチユエータと
、該電歪式アクチユエータの伸縮作動を内部に充
満された燃料を介して前記ニードルの開閉方向の
力に変換する圧力室と、を備えた燃料噴射弁にお
いて、該燃料噴射弁内の前記圧力室近傍でかつ燃
料供給方向にみて前記燃料溜り室よりも上流側の
位置に、供給されてくる燃料が一時的に充満され
、前記圧力室に燃料を補給可能な蓄圧室を設けた
ことを特徴とする燃料噴射弁。 A main body having a nozzle hole, a needle inserted into the main body so that the nozzle hole can be opened and closed and having a pressure receiving surface for opening operation, and a needle formed around the pressure receiving surface of the needle in the main body and supplying a fuel storage chamber that temporarily accommodates the incoming fuel; an electrostrictive actuator using a piezoelectric element that operates to expand and contract; and the expansion and contraction of the electrostrictive actuator to the needle via the fuel filled inside. and a pressure chamber that converts force into an opening/closing direction, the fuel is supplied to a position near the pressure chamber in the fuel injection valve and upstream of the fuel reservoir chamber when viewed in the fuel supply direction. 1. A fuel injection valve characterized in that a pressure accumulation chamber is provided which is temporarily filled with incoming fuel and capable of replenishing the pressure chamber with fuel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5875687U JPH055252Y2 (en) | 1987-04-20 | 1987-04-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5875687U JPH055252Y2 (en) | 1987-04-20 | 1987-04-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63166664U true JPS63166664U (en) | 1988-10-31 |
| JPH055252Y2 JPH055252Y2 (en) | 1993-02-10 |
Family
ID=30889611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5875687U Expired - Lifetime JPH055252Y2 (en) | 1987-04-20 | 1987-04-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH055252Y2 (en) |
-
1987
- 1987-04-20 JP JP5875687U patent/JPH055252Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH055252Y2 (en) | 1993-02-10 |