JPS58181979U - Pressure boosting unit injector - Google Patents
Pressure boosting unit injectorInfo
- Publication number
- JPS58181979U JPS58181979U JP8048582U JP8048582U JPS58181979U JP S58181979 U JPS58181979 U JP S58181979U JP 8048582 U JP8048582 U JP 8048582U JP 8048582 U JP8048582 U JP 8048582U JP S58181979 U JPS58181979 U JP S58181979U
- Authority
- JP
- Japan
- Prior art keywords
- pressure chamber
- check valve
- upper pressure
- unit injector
- fuel
- 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 5
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の増圧式ユニットインジェクタの縦断面図
、第２図は従来の増圧式ユニットインジェクタのチェッ
ク弁１，２の作動説明図、第３図は本考案−実施例の縦
断面図である。
２３は上部チェック弁機構、２４は摺動孔部、 。
２５は上部チェック弁、２８はチェック弁用バネ。Fig. 1 is a longitudinal cross-sectional view of a conventional pressure-increasing unit injector, Fig. 2 is an explanatory diagram of the operation of check valves 1 and 2 of a conventional pressure-increasing unit injector, and Fig. 3 is a longitudinal cross-sectional view of an embodiment of the present invention. be. 23 is an upper check valve mechanism; 24 is a sliding hole portion; 25 is an upper check valve, and 28 is a spring for the check valve.
Claims (1)
圧力室１３内に供給される高圧燃料の押圧力にて作動し
またバネにてメータリング動作するピストンと、上部圧
力室１３に燃料通路２２−を介して連通し上記ピストン
のメータリング動作時に燃料通路２２からの燃料が流入
してメータリングされる下部圧力室１６とを備えたもの
におい”で、燃料通路２２の上部圧力室１３側に上部チ
ェック弁機構２３を設け、この上部チェック弁機構２３
を装置本体１０に形成された摺動孔部２４とこの摺動孔
部２４に摺動可能に嵌挿された上部チェック弁２５とこ
のチェック弁２５を上部圧力室１３側に付勢してチェッ
ク弁２５の弁部２７をシート部より離間させるチェック
弁用バネ２８とより構成したことを特徴とする増圧式ユ
ニットインジェクタ。an upper pressure chamber 13; a piston that is fitted into the upper pressure chamber 13 and operates under the pressure of the high-pressure fuel supplied into the upper pressure chamber 13; and that operates meteringly using a spring; The upper pressure chamber 13 of the fuel passage 22 is equipped with a lower pressure chamber 16 that communicates with the upper pressure chamber 13 of the fuel passage 22 through the passage 22 and is metered by the flow of fuel from the fuel passage 22 during the metering operation of the piston. An upper check valve mechanism 23 is provided on the side, and this upper check valve mechanism 23
Check the sliding hole 24 formed in the device body 10, the upper check valve 25 slidably fitted into the sliding hole 24, and the check valve 25 by urging it toward the upper pressure chamber 13. A pressure-increasing unit injector characterized by comprising a check valve spring 28 that separates a valve portion 27 of a valve 25 from a seat portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8048582U JPS58181979U (en) | 1982-05-31 | 1982-05-31 | Pressure boosting unit injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8048582U JPS58181979U (en) | 1982-05-31 | 1982-05-31 | Pressure boosting unit injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58181979U true JPS58181979U (en) | 1983-12-05 |
Family
ID=30089627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8048582U Pending JPS58181979U (en) | 1982-05-31 | 1982-05-31 | Pressure boosting unit injector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58181979U (en) |
-
1982
- 1982-05-31 JP JP8048582U patent/JPS58181979U/en active Pending
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