JPH0287965U - - Google Patents
Info
- Publication number
- JPH0287965U JPH0287965U JP16687488U JP16687488U JPH0287965U JP H0287965 U JPH0287965 U JP H0287965U JP 16687488 U JP16687488 U JP 16687488U JP 16687488 U JP16687488 U JP 16687488U JP H0287965 U JPH0287965 U JP H0287965U
- Authority
- JP
- Japan
- Prior art keywords
- spill valve
- fuel
- fuel injection
- chamber
- 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 27
- 238000002347 injection Methods 0.000 claims description 20
- 239000007924 injection Substances 0.000 claims description 20
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
Landscapes
- High-Pressure Fuel Injection Pump Control (AREA)
- Fuel-Injection Apparatus (AREA)
Description
第１図は、本考案の一実施例による燃料噴射装
置の概略説明図、第２図はカム角度に対する噴射
率の関係を示すグラフである。
１……燃料噴射装置、２……燃料噴射ポンプ、
３……燃料噴射ノズル、４……スピルバルブ、５
……燃料噴射管、５Ａ……噴射用燃料通路、５Ｂ
……噴射・スピル用燃料通路、５Ｃ……スピルバ
ルブ上流側燃料通路、５Ｄ……スピルバルブ下流
側燃料通路、６……プランジヤ、７……制御スリ
ーブ、８……ポンプ室、９……プランジヤ室、１
０……デリバリバルブ、１１……スピルポート、
１２……ノズルボデイ、１３……ニードル弁、１
４……プレツシヤスプリング、１５……燃料溜り
室（ノズル圧力室）、１６……噴口、１７……燃
焼室、１８……スピルバルブホルダ、１９……ス
ピルバルブ収容室、２０……スピルバルブ本体、
２１……スピルバルブセツトスプリング、２２…
…スピルバルブ背圧室、２３……スピルバルブ受
圧室、２４……スピル室、２５……オリフイス、
２６……リーク燃料リターン通路、２７……フイ
ルター、２８……燃料タンク、ＰＵ……スピルバ
ルブ上流側燃料通路５Ｃ内の圧力、ＰＤ……スピ
ルバルブ下流側燃料通路５Ｄ内の圧力。
FIG. 1 is a schematic explanatory diagram of a fuel injection system according to an embodiment of the present invention, and FIG. 2 is a graph showing the relationship between the injection rate and the cam angle. 1...Fuel injection device, 2...Fuel injection pump,
3... Fuel injection nozzle, 4... Spill valve, 5
...Fuel injection pipe, 5A ...Injection fuel passage, 5B
...Injection/spill fuel passage, 5C...Spill valve upstream fuel passage, 5D...Spill valve downstream fuel passage, 6...Plunger, 7...Control sleeve, 8...Pump chamber, 9...Plunger chamber, 1
0... Delivery valve, 11... Spill port,
12... Nozzle body, 13... Needle valve, 1
4... Pressure spring, 15... Fuel reservoir chamber (nozzle pressure chamber), 16... Nozzle port, 17... Combustion chamber, 18... Spill valve holder, 19... Spill valve housing chamber, 20... Spill valve body ,
21... Spill valve set spring, 22...
... Spill valve back pressure chamber, 23 ... Spill valve pressure receiving chamber, 24 ... Spill chamber, 25 ... Orifice,
26...Leak fuel return passage, 27...Filter, 28...Fuel tank, PU...Pressure in the fuel passage 5C on the upstream side of the spill valve, PD...Pressure in the fuel passage 5D on the downstream side of the spill valve.
Claims (1)
圧送する燃料通路を形成する噴射管と、 この噴射管からの高圧燃料を機関の燃焼室内に
噴射する燃料噴射ノズルとを有する燃料噴射装置
であつて、 前記燃料噴射ポンプと前記燃料噴射ノズルとの
間の前記燃料通路に並列にスピルバルブを設ける
とともに、このスピルバルブのスピルバルブ本体
によりスピルバルブ背圧室およびスピルバルブ受
圧室を区画形成し、このスピルバルブ背圧室を前
記燃料噴射ポンプに連通し、かつスピルバルブ受
圧室を前記燃料噴射ノズルに連通し、前記スピル
バルブの開弁により前記スピルバルブ受圧室内の
高圧燃料をスピルさせることを特徴とする燃料噴
射装置。[Scope of Claim for Utility Model Registration] A fuel injection pump, an injection pipe forming a fuel passage for pumping high-pressure fuel discharged from the fuel injection pump, and an injection pipe for injecting the high-pressure fuel from the injection pipe into the combustion chamber of an engine. A fuel injection device having a fuel injection nozzle, wherein a spill valve is provided in parallel in the fuel passage between the fuel injection pump and the fuel injection nozzle, and a spill valve main body of the spill valve provides a spill valve back pressure chamber and a spill valve pressure receiving pressure chamber. defining a chamber, communicating the spill valve back pressure chamber with the fuel injection pump, communicating the spill valve pressure receiving chamber with the fuel injection nozzle, and spilling the high pressure fuel in the spill valve pressure receiving chamber by opening the spill valve; A fuel injection device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16687488U JPH0287965U (en) | 1988-12-26 | 1988-12-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16687488U JPH0287965U (en) | 1988-12-26 | 1988-12-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0287965U true JPH0287965U (en) | 1990-07-12 |
Family
ID=31454651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16687488U Pending JPH0287965U (en) | 1988-12-26 | 1988-12-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0287965U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008502838A (en) * | 2004-06-16 | 2008-01-31 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | High pressure pump for fuel injection device of internal combustion engine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60116856A (en) * | 1983-11-09 | 1985-06-24 | ローベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Fuel jet apparatus internal combustion engine |
-
1988
- 1988-12-26 JP JP16687488U patent/JPH0287965U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60116856A (en) * | 1983-11-09 | 1985-06-24 | ローベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Fuel jet apparatus internal combustion engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008502838A (en) * | 2004-06-16 | 2008-01-31 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | High pressure pump for fuel injection device of internal combustion engine |
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