JPS6272468U - - Google Patents
Info
- Publication number
- JPS6272468U JPS6272468U JP16423385U JP16423385U JPS6272468U JP S6272468 U JPS6272468 U JP S6272468U JP 16423385 U JP16423385 U JP 16423385U JP 16423385 U JP16423385 U JP 16423385U JP S6272468 U JPS6272468 U JP S6272468U
- Authority
- JP
- Japan
- Prior art keywords
- diameter piston
- pressure chamber
- small
- low
- high 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.)
- Pending
Links
- 239000000446 fuel Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Description
第１図は本考案の一実施例の構成を示す縦断面
図。第２図は本考案の一実施例の作用の説明に供
する噴射率を示す線図。第３図は本考案の一実施
例の変形例を示す縦断面図。第４図は本考案の他
の実施例の構成を示す縦断面図。
Ａ……燃料噴射弁本体、Ｂ……増圧装置、Ｃ…
…燃料噴射ポンプ、２Ｃ……油溜室、１１……大
径ピストン、１２……小径ピストン。
FIG. 1 is a longitudinal sectional view showing the structure of an embodiment of the present invention. FIG. 2 is a diagram showing the injection rate for explaining the operation of one embodiment of the present invention. FIG. 3 is a longitudinal sectional view showing a modification of one embodiment of the present invention. FIG. 4 is a longitudinal sectional view showing the structure of another embodiment of the present invention. A... Fuel injection valve body, B... Pressure booster, C...
...Fuel injection pump, 2C...Oil reservoir chamber, 11...Large diameter piston, 12...Small diameter piston.
Claims (1)
を内蔵し、前記大径ピストンの背部側に低圧室を
、前記小径ピストンの先端部側に高圧室をそれぞ
れ形成し、前記低圧室に燃料噴射ポンプからの圧
送燃料を供給し、前記高圧室を燃料噴射弁本体の
油溜室に連通し、絞り部を有する通路にて前記低
圧室と前記高圧室とを連通するとともに、前記大
径ピストンおよび前記小径ピストンの前記高圧側
への所定距離の移動によつて前記大径ピストンま
たは前記小径ピストンにより前記通路を遮断する
増圧装置を備えたことを特徴とする燃料噴射弁。 A large-diameter piston and a small-diameter piston are built in that are brought into contact with each other, a low-pressure chamber is formed on the back side of the large-diameter piston, a high-pressure chamber is formed on the tip side of the small-diameter piston, and fuel is injected into the low-pressure chamber. Pressurized fuel is supplied from a pump, the high pressure chamber is communicated with the oil reservoir chamber of the fuel injection valve main body, the low pressure chamber and the high pressure chamber are communicated with each other through a passage having a constriction part, and the large diameter piston and A fuel injection valve comprising a pressure increase device that blocks the passage by the large diameter piston or the small diameter piston by moving the small diameter piston a predetermined distance toward the high pressure side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16423385U JPS6272468U (en) | 1985-10-28 | 1985-10-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16423385U JPS6272468U (en) | 1985-10-28 | 1985-10-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6272468U true JPS6272468U (en) | 1987-05-09 |
Family
ID=31093162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16423385U Pending JPS6272468U (en) | 1985-10-28 | 1985-10-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6272468U (en) |
-
1985
- 1985-10-28 JP JP16423385U patent/JPS6272468U/ja active Pending
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