JP2012163111A5 - - Google Patents
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- Publication number
- JP2012163111A5 JP2012163111A5 JP2012126672A JP2012126672A JP2012163111A5 JP 2012163111 A5 JP2012163111 A5 JP 2012163111A5 JP 2012126672 A JP2012126672 A JP 2012126672A JP 2012126672 A JP2012126672 A JP 2012126672A JP 2012163111 A5 JP2012163111 A5 JP 2012163111A5
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- pressure fuel
- fuel
- low
- chamber
- 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
Claims (2)
前記ポンプボディとの間で前記シリンダを挟むシリンダホルダと、
シリンダに滑合して往復動するプランジャと、
前記プランジャの一端部により燃料が加圧される加圧室と、
前記加圧室に吸入される燃料が通過する低圧燃料通路と、
前記低圧燃料通路に連通し、前記シリンダホルダとシンリンダとで形成される低圧燃料室とを備え、
前記プランジャの外周部には前記シリンダと滑合する部分よりも直径が小さい段付き部を有し、
前記段付き部は、前記低圧燃料室の燃料を加圧又は減圧することで、前記低圧燃料通路に燃料を吐出し、または前記低圧燃料室に燃料を吸入し、
前記低圧燃料室と前記低圧通路との間の燃料流動は、前記シリンダと前記シリンダホルダとの間に設けた孔若しくは溝を通るように構成された高圧燃料供給ポンプ。 A cylinder combined with the pump body;
A cylinder holder that sandwiches the cylinder with the pump body;
A plunger that slides back and forth in a cylinder,
A pressurizing chamber in which fuel is pressurized by one end of the plunger;
A low-pressure fuel passage through which fuel sucked into the pressurizing chamber passes,
A low pressure fuel chamber communicating with the low pressure fuel passage and formed by the cylinder holder and a cylinder;
The outer peripheral portion of the plunger has a stepped portion having a smaller diameter than the portion that slides on the cylinder,
The stepped portion pressurizes or depressurizes the fuel in the low pressure fuel chamber, thereby discharging the fuel into the low pressure fuel passage, or sucking the fuel into the low pressure fuel chamber,
A high-pressure fuel supply pump configured to allow a fuel flow between the low-pressure fuel chamber and the low-pressure passage to pass through a hole or a groove provided between the cylinder and the cylinder holder.
前記孔若しくは溝が、前記シリンダの周囲に沿う方向の幅（Ｂ）よりも中心軸線から放射方向の寸法（Ｈあるいはｍ）の方が小さく形成されている高圧燃料供給ポンプ。 In claim 1,
The high-pressure fuel supply pump in which the hole or groove is formed so that a radial dimension (H or m) from the central axis is smaller than a width (B) in a direction along the circumference of the cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012126672A JP5625016B2 (en) | 2012-06-04 | 2012-06-04 | High pressure fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012126672A JP5625016B2 (en) | 2012-06-04 | 2012-06-04 | High pressure fuel pump |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008279043A Division JP5017233B2 (en) | 2008-10-30 | 2008-10-30 | High pressure fuel pump |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2012163111A JP2012163111A (en) | 2012-08-30 |
| JP2012163111A5 true JP2012163111A5 (en) | 2012-11-01 |
| JP5625016B2 JP5625016B2 (en) | 2014-11-12 |
Family
ID=46842697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012126672A Active JP5625016B2 (en) | 2012-06-04 | 2012-06-04 | High pressure fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5625016B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015219419B3 (en) * | 2015-10-07 | 2017-02-23 | Continental Automotive Gmbh | Pumping device and fuel supply device for an internal combustion engine and mixing device, in particular for a motor vehicle |
| DE102015219415B4 (en) | 2015-10-07 | 2020-07-09 | Vitesco Technologies GmbH | High-pressure fuel pump and fuel supply device for an internal combustion engine, in particular a motor vehicle |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3327438B2 (en) * | 1995-02-01 | 2002-09-24 | 愛三工業株式会社 | Electromagnetic fuel injection valve |
| JP3477334B2 (en) * | 1996-11-29 | 2003-12-10 | 三菱重工業株式会社 | Fuel injection pump and unit injector using the same |
| EP1471247B1 (en) * | 1999-02-09 | 2006-10-18 | Hitachi, Ltd. | High pressure fuel supply pump for internal combustion engine |
| EP1348868B8 (en) * | 2001-01-05 | 2007-06-13 | Hitachi, Ltd. | Fluid pump and high-pressure fuel feed pump |
| DE10134069B4 (en) * | 2001-07-13 | 2011-07-07 | Robert Bosch GmbH, 70469 | Fuel pump for a fuel system of an internal combustion engine |
| JP2007064076A (en) * | 2005-08-30 | 2007-03-15 | Toyota Motor Corp | Fuel injection device for internal combustion engine |
| JP4648254B2 (en) * | 2006-06-22 | 2011-03-09 | 日立オートモティブシステムズ株式会社 | High pressure fuel pump |
| JP4625789B2 (en) * | 2006-07-20 | 2011-02-02 | 日立オートモティブシステムズ株式会社 | High pressure fuel pump |
-
2012
- 2012-06-04 JP JP2012126672A patent/JP5625016B2/en active Active
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