CN102472257A - High pressure pump - Google Patents
High pressure pump Download PDFInfo
- Publication number
- CN102472257A CN102472257A CN2010800291238A CN201080029123A CN102472257A CN 102472257 A CN102472257 A CN 102472257A CN 2010800291238 A CN2010800291238 A CN 2010800291238A CN 201080029123 A CN201080029123 A CN 201080029123A CN 102472257 A CN102472257 A CN 102472257A
- Authority
- CN
- China
- Prior art keywords
- pump
- pressure service
- service pump
- plunger
- eccentric
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0408—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0413—Cams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0426—Arrangements for pressing the pistons against the actuated cam; Arrangements for connecting the pistons to the actuated cam
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0435—Arrangements for disconnecting the pistons from the actuated cam
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0448—Sealing means, e.g. for shafts or housings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/042—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being cams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/045—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being eccentrics
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to a high-pressure pump (1) for a fuel injection device of an internal combustion engine, which has a pump element (6) with a pump piston (7) which, by means of an eccentric (21) provided on a rotatably mounted drive shaft (3) and an eccentric ring (22), can be moved up and down in accordance with an eccentric stroke, wherein the pump piston (7) is arranged in a bucket tappet (26).
Description
Technical field
The present invention relates to one like claim 1 high-pressure service pump that is used for the fuel injection system of internal-combustion engine as described in the preamble.
Background technique
Can use radial plunger pump for the pressure-accumulating tube co-rail oil injection system in the prior art, be used for setting up high pressure at the high-pressure storage of pressure-accumulating tube co-rail oil injection system.Radial plunger pump can have one or more pump parts that have pump plunger respectively; They for example place to-and-fro motion through cam or eccentric wheel indirectly by live axle; Be used to carry out intake stroke and compression stroke; During intake stroke, fuel is drawn in the pump working chamber of high-pressure service pump the fuel of compression suction and output to the high-pressure storage of pressure-accumulating tube co-rail oil injection system in compression stroke.
By the known radial plunger pump of DE 43 05 791 A1, wherein pass through the radial plunger transfer the fuel of handling by the eccentric wheel of an axle.Three radial plungers are evenly distributed on the excircle of eccentric shaft.Each radial plunger touches through piston shoes and eccentric hoop and leans against on the eccentric shaft.Eccentric hoop can be rotated to support on the eccentric shaft through sliding bearing.
In DE 198 26 961 A1, described a radial plunger pump, one of them eccentric shaft is in order to drive supply unit and to be bearing in the pump case and a shaft sealing that is made up of bearing ring seal is set on the end segments of freely giving prominence to of axle single-endedly.This slip ring touches on the eccentric hoop that leans against eccentric shaft, and this eccentric hoop is through the precompression roof pressure slip ring of jack unit and conveying equipment.This eccentric hoop cover shape ground constitutes and surrounds the end segments of freely giving prominence to of eccentric shaft.
But by the known high-pressure service pump of existing technology structurally be very bothersome and therefore work in-process be expensive.
Summary of the invention
Plunger pump, the especially radial plunger pump of the simple structure in other words that therefore needs to simplify on the implementation structure, but it has high high stability simultaneously.
Stipulate a high-pressure service pump that is used for the fuel injection system of internal-combustion engine according to the present invention; It has pump parts; These pump parts have pump plunger; It moves up and down corresponding to eccentric stroke through an eccentric part and an eccentric hoop that surrounds eccentric part that is located on the live axle that rotatably is supported, and wherein said pump plunger is arranged in the bucket tappet.Through simplify the design proposal of the high-pressure radial plunger pump that constitutes by single plunger according to high-pressure service pump of the present invention, through being provided with eccentric hoop and bucket tappet with very simple structure transmission.The combination of simple structure and high stability is provided according to solution of the present invention.Through being installed, pump plunger in bucket tappet, makes the push rod transverse force of transfer function on push rod particularly well.High pressure also only is positioned on the cylinder cap and the housing of high-pressure service pump only support mechanism and low pressure recycle.
Preferred said bucket tappet is the single hole bucket tappet.The single hole bucket tappet be used for transfer function better on pump plunger transverse force and be particularly suitable for transmitting transverse force to pump case with high rotating speed.
Said in accordance with the preferred embodiment high-pressure service pump is a single plunger pump.
Be configured to sinusoidal cam according to the said eccentric part of another embodiment.
A bearing also preferably is set between said eccentric part and eccentric hoop.
Preferred especially said bearing is made up of the PEEK bearing.Can realize high rotating speed through being provided with the PEEK bearing.The high speed stability of high-pressure service pump allows transmission ratio and allows littler plunger diameter thus in addition, and this also causes better efficient.
Be installed in the dead slot that in the housing of high-pressure service pump, forms according to the said bucket tappet of another preferred embodiment.
Have an outer wall according to the said bucket tappet of another preferred embodiment, it touches on the wall that leans against housing.
Have inwall at bucket tappet described in another preferred embodiment, it is positioned at the bar section opposite of cylinder cap, in the bar section, pump plunger is set.
Be preferably in addition between inwall and the bar section of said bucket tappet a spring is set.
Description of drawings
Describe embodiments of the invention in detail by means of accompanying drawing below.In the accompanying drawing:
Fig. 1 illustrates the high-pressure service pump according to existing technology with partial cross section,
Fig. 2 illustrates according to high-pressure service pump of the present invention with sectional view.
Embodiment
Shown in Fig. 1 according to the high-pressure service pump 1 of the fuel injection system that is used for internal-combustion engine of existing technology.High-pressure service pump 1 according to existing technology has housing 2, and its many bodies ground constitutes, and the live axle 3 that rotation drives is set in housing, on live axle, is provided with cam 4.This high-pressure service pump 1 has pump parts 6 that are arranged in the cylinder cap 5, has pump plunger 7, and its cam 4 through live axle 3 is upwards driving near the footpath of live axle 3 spin axis D with to-and-fro motion indirectly at least.Seal guiding movably in the cylinder hole 8 of pump plunger 7 in cylinder cap 5 and in cylinder hole 8, limit a pump working chamber 9 through its end face that deviates from live axle 3.Deviate from it that pump plunger 7 has the plunger mat 19 than its all the other position larger diameters on end of pump working chamber 9.
As shown in the figure, cylinder cap 5 is furnished with bar section 10, is provided with the cylinder hole 8 that holds pump plunger 7 therein, and around pump plunger spring 11 is set.
Said pump working chamber 9 has with fuel through a fuel input channel (not shown) that in housing 2, extends and imports for example being connected of transfer pump.To the inlet of pump working chamber 9, an entering valve 12 of in pump working chamber 9, opening is set in the fuel input channel, it has spring-loading valve body 13.Said pump working chamber 9 also has and being connected of exporting through a fuel discharge route 14 that in cylinder cap 5, extends, and it for example is connected with the high-pressure storage of (unshowned) pressure-accumulating tube co-rail oil injection system.One or preferably a plurality of sparger (not shown) that are arranged on the internal combustion engine cylinders be connected with high-pressure storage, inject fuel into through sparger in the cylinder of internal-combustion engine.To the inlet of pump working chamber 9, an outlet valve 15 of opening from pump working chamber 9 is set at fuel discharge route 14.
Said spring holder 20 is connected with pump plunger 7, spring 11 is not only acted on the pump plunger 7, and act on the rolling push rod 16, is used to make the cam 4 of rolling push rod roof pressure live axle 3.Described high-pressure service pump 1 according to existing technology does not have high pressure in housing 2 inside, need not measure high pressure resistant or that improve intensity for housing 2 thus.
As shown in Figure 1 in addition, said high-pressure service pump 1 has metering unit 23, and on housing 2, has mounting flange 24.
Fig. 2 illustrates the sectional view according to high-pressure service pump 1 embodiment.The same basic setup of the parts of this high-pressure service pump 1 is in the housing 2 and cylinder cap 5 of many bodies.Eccentric part 21 is set on live axle 3, and it is configured to sinusoidal cam here.Excircle around eccentric part 21 is provided with eccentric hoop 22.Between eccentric hoop 22 and eccentric part 21, be provided with PEEK bearing 30, be used to realize high rotating speed.
Be provided with in this external cylinder cap 5 and get into valve 12 and expulsion valve 15,, will direct into the high-pressure storage (not shown) of pressure-accumulating tube co-rail oil injection system through expulsion valve with the fuel that high pressure loads through getting into valve high-pressure service pump 1 transfer the fuel.The fuel relief valve 25 that in housing 2, still has letter to show in this embodiment.
Power transmission between live axle 3 and pump plunger 7 is through moving the roller (not shown), be bearing in the eccentric hoop 22 on the eccentric part 21 and be fixed on plunger mat 20 realizations on the pump plunger 7; Wherein when the spin axis D of live axle 3 rotates, make pump plunger 7 place to-and-fro motion, alternately carry out intake stroke and compression stroke in other words corresponding to eccentric stroke in live axle 3, eccentric part 21 and eccentric hoop 22 one common peripheral.
The same with above-mentioned high-pressure service pump 1 according to existing technology, only in cylinder cap 5, there is high pressure in the embodiment shown in Figure 2, so 2 support mechanisms of housing and low pressure recycle.
Provide the combination of particularly advantageous simple structure and high speed stability, wherein high speed stability also to allow transmission ratio and realize littler plunger diameter thus according to high-pressure service pump 1 of the present invention, this also causes better high-pressure service pump efficient.
Claims (10)
1. high-pressure service pump (1) that is used for the fuel injection system of internal-combustion engine; This high-pressure service pump has pump parts (6); These pump parts have pump plunger (7); This pump plunger can move up and down corresponding to eccentric stroke through the eccentric hoop (22) that is located at the eccentric part (21) on the live axle (3) that rotatably is supported and surrounds this eccentric part (21), it is characterized in that said pump plunger (7) is arranged in the bucket tappet (26).
2. high-pressure service pump as claimed in claim 1 (1) is characterized in that, said bucket tappet (26) is the single hole bucket tappet.
3. according to claim 1 or claim 2 high-pressure service pump (1) is characterized in that said high-pressure service pump (1) is a single plunger pump.
4. like each or multinomial described high-pressure service pump (1) in the claim 1 to 3, it is characterized in that said eccentric part (21) is configured to sinusoidal cam.
5. like each or multinomial described high-pressure service pump (1) in the claim 1 to 4, it is characterized in that, between said eccentric part (21) and said eccentric hoop (22), a bearing is set.
6. high-pressure service pump as claimed in claim 5 (1) is characterized in that, said bearing is PEEK bearing (30).
7. like each or multinomial described high-pressure service pump (1) in the claim 1 to 6, it is characterized in that said bucket tappet (26) is installed in the dead slot (31) that forms in the housing in said high-pressure service pump (1) (2).
8. like each or multinomial described high-pressure service pump (1) in the claim 1 to 7, it is characterized in that said bucket tappet (26) has outer wall (27), this outer wall touches on the wall that leans against said housing (2).
9. like each or multinomial described high-pressure service pump (1) in the claim 1 to 8, it is characterized in that said bucket tappet (26) has inwall (28), this inwall is positioned at bar section (10) opposite of cylinder cap (5), and said pump plunger (7) is arranged in this bar section.
10. high-pressure service pump as claimed in claim 9 (1) is characterized in that, between the said inwall (28) of said bucket tappet (26) and said bar section (10), a spring (11) is set.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009027272.0 | 2009-06-29 | ||
| DE200910027272 DE102009027272A1 (en) | 2009-06-29 | 2009-06-29 | high pressure pump |
| PCT/EP2010/055887 WO2011000598A1 (en) | 2009-06-29 | 2010-04-30 | High pressure pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102472257A true CN102472257A (en) | 2012-05-23 |
Family
ID=42313866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800291238A Pending CN102472257A (en) | 2009-06-29 | 2010-04-30 | High pressure pump |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2449261A1 (en) |
| CN (1) | CN102472257A (en) |
| DE (1) | DE102009027272A1 (en) |
| WO (1) | WO2011000598A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047100A (en) * | 2013-01-10 | 2013-04-17 | 无锡开普机械有限公司 | Rotor pump with cam shaft sleeve |
| CN103452789A (en) * | 2013-09-06 | 2013-12-18 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Cam mechanism for oil supply pump of internal combustion engine |
| CN103470416A (en) * | 2013-09-26 | 2013-12-25 | 南岳电控(衡阳)工业技术有限公司 | Radial plunger piston oil supplying pump applied to high-pressure common-rail fuel oil injection system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425533A (en) * | 2011-09-23 | 2012-04-25 | 重庆工商大学 | Sinusoidal flow generating device |
| DE102022206919A1 (en) * | 2022-07-06 | 2024-01-11 | Thyssenkrupp Ag | Radial piston pump, especially radial piston compressor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040156733A1 (en) * | 2001-08-08 | 2004-08-12 | Crt Common Rail Technologies Ag | High pressure feed pump |
| CN1714239A (en) * | 2002-12-04 | 2005-12-28 | 罗伯特·博世有限公司 | High pressure pump for a fuel injection device of an internal combustion engine |
| US20090120280A1 (en) * | 2007-11-12 | 2009-05-14 | Denso Corporation | Fuel injection pump and method for assembling the same |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4305791C2 (en) | 1993-02-25 | 2001-12-13 | Hydraulik Ring Gmbh | Radial piston pump, in particular fuel pump for internal combustion engines |
| WO1998058172A1 (en) | 1997-06-17 | 1998-12-23 | Mannesmann Rexroth Ag | Radial piston pump |
| JP2006170184A (en) * | 2004-11-16 | 2006-06-29 | Denso Corp | High pressure fuel pump |
| DE102004056940A1 (en) * | 2004-11-25 | 2006-06-01 | Schaeffler Kg | High pressure injection pump, has housing in which pump pistons are provided, where pistons abut against pressure surface, pressure plate arranged in bucket tappet, and pistons self adjustably supported at pressure plate |
| AT504520B1 (en) * | 2007-03-26 | 2008-06-15 | Bosch Gmbh Robert | High pressure piston pump driving device for internal combustion engine, has cam with cam lobe curve having form in its section that is obtained from overlapping of alternation of sinusoidal waves |
-
2009
- 2009-06-29 DE DE200910027272 patent/DE102009027272A1/en not_active Withdrawn
-
2010
- 2010-04-30 EP EP10718148A patent/EP2449261A1/en not_active Withdrawn
- 2010-04-30 WO PCT/EP2010/055887 patent/WO2011000598A1/en active Application Filing
- 2010-04-30 CN CN2010800291238A patent/CN102472257A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040156733A1 (en) * | 2001-08-08 | 2004-08-12 | Crt Common Rail Technologies Ag | High pressure feed pump |
| CN1714239A (en) * | 2002-12-04 | 2005-12-28 | 罗伯特·博世有限公司 | High pressure pump for a fuel injection device of an internal combustion engine |
| US20090120280A1 (en) * | 2007-11-12 | 2009-05-14 | Denso Corporation | Fuel injection pump and method for assembling the same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047100A (en) * | 2013-01-10 | 2013-04-17 | 无锡开普机械有限公司 | Rotor pump with cam shaft sleeve |
| CN103452789A (en) * | 2013-09-06 | 2013-12-18 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Cam mechanism for oil supply pump of internal combustion engine |
| CN103470416A (en) * | 2013-09-26 | 2013-12-25 | 南岳电控(衡阳)工业技术有限公司 | Radial plunger piston oil supplying pump applied to high-pressure common-rail fuel oil injection system |
| CN103470416B (en) * | 2013-09-26 | 2016-08-17 | 南岳电控（衡阳）工业技术股份有限公司 | A kind of radial plunger oil feed pump being applied to high pressure common rail fuel injection system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011000598A1 (en) | 2011-01-06 |
| EP2449261A1 (en) | 2012-05-09 |
| DE102009027272A1 (en) | 2010-12-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120523 |