JP2008051110A5 - - Google Patents
Download PDFInfo
- Publication number
- JP2008051110A5 JP2008051110A5 JP2007261686A JP2007261686A JP2008051110A5 JP 2008051110 A5 JP2008051110 A5 JP 2008051110A5 JP 2007261686 A JP2007261686 A JP 2007261686A JP 2007261686 A JP2007261686 A JP 2007261686A JP 2008051110 A5 JP2008051110 A5 JP 2008051110A5
- Authority
- JP
- Japan
- Prior art keywords
- pressure fuel
- fuel supply
- cylinder
- supply pump
- seal
- 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 22
- 239000000463 material Substances 0.000 claims 1
Claims (9)
当該ポンプ本体に組み付けられ、前記凹所を加圧室として画成するシリンダ、
当該シリンダによって往復可能に支承され、前記加圧室内に進退して燃料を加圧するプランジャ、
前記シリンダの周囲で、前記ポンプ本体とシリンダとの間に形成された第１のシール部とを有する高圧燃料供給ポンプにおいて、
当該第１のシール部と前記加圧室との間の前記シリンダの外周に第２のシール部を備えた
ことを特徴とする高圧燃料供給ポンプ。 Pump body with a recess,
A cylinder assembled to the pump body and defining the recess as a pressurizing chamber;
A plunger that is supported by the cylinder so as to reciprocate, and that advances and retreats in the pressurizing chamber to pressurize the fuel;
In the high pressure fuel supply pump having a first seal portion formed between the pump body and the cylinder around the cylinder,
A high-pressure fuel supply pump comprising a second seal portion on an outer periphery of the cylinder between the first seal portion and the pressurizing chamber.
当該ポンプ本体に組み付けられ、前記凹所を加圧室として画成するシリンダ、
当該シリンダによって往復可能に支承され、前記加圧室内に進退して燃料を加圧するプランジャ、
前記シリンダの周囲で、前記ポンプ本体とシリンダとの間に形成されたシール部とを有する高圧燃料供給ポンプにおいて、
前記シール部は、大気側の第１のシール部と加圧室側の第２のシール部との２つのシール部から構成されている
ことを特徴とする高圧燃料供給ポンプ。 Pump body with a recess,
A cylinder assembled to the pump body and defining the recess as a pressurizing chamber;
A plunger that is supported by the cylinder so as to reciprocate, and that advances and retreats in the pressurizing chamber to pressurize the fuel;
In the high-pressure fuel supply pump having a seal portion formed between the pump body and the cylinder around the cylinder,
The seal part is composed of two seal parts, a first seal part on the atmosphere side and a second seal part on the pressure chamber side.
A high-pressure fuel supply pump characterized by that.
前記加圧室側に形成された第２のシール部が、前記加圧室側で発生するキャビテーションによって前記第１のシール部が破損するのを抑制する予備的なシール部である
ことを特徴とする高圧燃料供給ポンプ。 The high-pressure fuel supply pump according to claim 1 or 2 ,
The second seal portion formed on the pressurizing chamber side is a preliminary seal portion that suppresses damage to the first seal portion due to cavitation generated on the pressurizing chamber side. High pressure fuel supply pump.
前記２つのシール部の一方が環状の平面に形成されたシール部で、他方のシール部が円筒面に形成されたシール部である
ことを特徴とする高圧燃料供給ポンプ。 The high-pressure fuel supply pump according to claim 1 or 2,
One of the two seal portions is a seal portion formed on an annular plane , and the other seal portion is a seal portion formed on a cylindrical surface.
前記プランジャの先端部が、前記シリンダの加圧室側端部から前記加圧室内に突出している
ことを特徴とする高圧燃料供給ポンプ。 The high-pressure fuel supply pump according to any one of claims 1 to 4,
A high-pressure fuel supply pump, wherein a tip end portion of the plunger protrudes from a pressurizing chamber side end portion of the cylinder into the pressurizing chamber.
前記シリンダを前記ポンプ本体より硬度の硬い材料で形成した
ことを特徴とする高圧燃料供給ポンプ。 The high-pressure fuel supply pump according to any one of claims 1 to 5,
A high-pressure fuel supply pump characterized in that the cylinder is formed of a material harder than the pump body.
前記ポンプ本体と前記シリンダとを相対的に押圧する押圧機構を備えた
ことを特徴とする高圧燃料供給ポンプ。 The high-pressure fuel supply pump according to any one of claims 1 to 6 ,
High-pressure fuel supply pump, characterized in that a pressing mechanism for pressing said before and SL pump body cylinder relative basis.
前記加圧室とは反対側の前記シリンダの端部に配置され、前記プランジャと摺動するシール機構、
当該シール機構を前記ポンプ本体に取り付けるためのホルダを備え、
前記シール機構と前記ホルダによって、前記シリンダの反加圧室側の端部と前記第１のシール部の大気圧側を包囲する低圧燃料室を設けた
ことを特徴とする高圧燃料供給ポンプ。 The high-pressure fuel supply pump according to claim 1,
A seal mechanism disposed at the end of the cylinder opposite to the pressurizing chamber and sliding with the plunger;
A holder for attaching the seal mechanism to the pump body;
A high-pressure fuel supply pump characterized in that a low-pressure fuel chamber is provided by the seal mechanism and the holder so as to surround an end portion of the cylinder on the side opposite to the pressure chamber and an atmospheric pressure side of the first seal portion .
前記低圧燃料室を低圧燃料通路に接続する通路を設けた
ことを特徴とする高圧燃料供給ポンプ。 The high-pressure fuel pump according to claim 8,
A high-pressure fuel supply pump comprising a passage connecting the low-pressure fuel chamber to a low-pressure fuel passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007261686A JP4372817B2 (en) | 2007-10-05 | 2007-10-05 | High pressure fuel supply pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007261686A JP4372817B2 (en) | 2007-10-05 | 2007-10-05 | High pressure fuel supply pump |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002556500A Division JPWO2002055870A1 (en) | 2001-01-05 | 2001-01-05 | High pressure fuel supply pump |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2008051110A JP2008051110A (en) | 2008-03-06 |
| JP2008051110A5 true JP2008051110A5 (en) | 2008-04-17 |
| JP4372817B2 JP4372817B2 (en) | 2009-11-25 |
Family
ID=39235373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2007261686A Expired - Fee Related JP4372817B2 (en) | 2007-10-05 | 2007-10-05 | High pressure fuel supply pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4372817B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5677329B2 (en) * | 2012-01-20 | 2015-02-25 | 日立オートモティブシステムズ株式会社 | High pressure fuel supply pump with electromagnetically driven suction valve |
| JP6221410B2 (en) * | 2013-06-27 | 2017-11-01 | トヨタ自動車株式会社 | High pressure fuel pump |
-
2007
- 2007-10-05 JP JP2007261686A patent/JP4372817B2/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2014088838A5 (en) | ||
| EP1881191A3 (en) | High-pressure fuel pump | |
| EP1857666A3 (en) | High pressure fuel pump for internal combustion engine | |
| JP2019090425A5 (en) | ||
| DE502007003793D1 (en) | PISTON PUMP, IN PARTICULAR FUEL HIGH PRESSURE PUMP, WITH WHEEL PISTON | |
| WO2012163686A3 (en) | Improvements to fuel pumps | |
| IN2014DN07218A (en) | ||
| ATE484674T1 (en) | HIGH PRESSURE PUMP PISTON CYLINDER UNIT | |
| WO2012065569A8 (en) | High-pressure fuel pump | |
| WO2012033982A3 (en) | High pressure pump including hollow stud | |
| TWI456115B (en) | Inflator with universal turning nozzle | |
| JP2008051110A5 (en) | ||
| JP2014001779A5 (en) | ||
| SE0602396L (en) | A fuel pump device | |
| US20180266374A1 (en) | Tappet roller retaining approach | |
| TW200848616A (en) | Improved head of air pump | |
| JP2015086699A5 (en) | ||
| JP2017025924A5 (en) | ||
| CN203374787U (en) | High-temperature and high-pressure container elastic sealing structure | |
| DE60130489D1 (en) | HIGH PRESSURE SEAL | |
| RU2010127326A (en) | MEANS FOR LEVELING AND PRELIMINARY VOLTAGE OF COMPONENTS OF THE FUEL INJECTOR ASSEMBLY | |
| JP6616765B2 (en) | Reciprocating pump | |
| CN110792541A (en) | Seepage-proofing plunger coupling part | |
| JP2004020048A5 (en) | ||
| CN203308671U (en) | Double-driving-head gas booster pump |