CN102105688B - High pressure fuel pump - Google Patents
High pressure fuel pump Download PDFInfo
- Publication number
- CN102105688B CN102105688B CN200980129377.4A CN200980129377A CN102105688B CN 102105688 B CN102105688 B CN 102105688B CN 200980129377 A CN200980129377 A CN 200980129377A CN 102105688 B CN102105688 B CN 102105688B
- Authority
- CN
- China
- Prior art keywords
- pump
- high pressure
- pump case
- case
- pressure 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.)
- Expired - Fee Related
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 27
- 238000005086 pumping Methods 0.000 claims abstract description 9
- 238000002485 combustion reaction Methods 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims abstract description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
- F04B23/08—Combinations of two or more pumps the pumps being of different types
- F04B23/10—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type
- F04B23/103—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type being a radial piston pump
-
- 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
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
- F04B23/08—Combinations of two or more pumps the pumps being of different types
- F04B23/12—Combinations of two or more pumps the pumps being of different types at least one pump being of the rotary-piston positive-displacement type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Reciprocating Pumps (AREA)
Abstract
The present invention relates to the high pressure fuel pump of the work for internal-combustion engine, it has a pump case (3), a pump camshaft (1) is bearing in this pump case and by a polygonal shaped configurations (4) and at least two pump piston (5a, 5b) form connection, these pump pistons are movably at the pumping cylinder head (6a be assemblied in this pump case (3) of corresponding configuration, be directed to 6b), wherein, carry out the rotary motion of described pump camshaft (1) to described at least two pump piston (5a, the conversion of each translational motion 5b), so that fuel is aspirated by by a low tension loop, be compressed into high pressure and be fed to a high pressure accumulator, in addition, described pump case (3) is fixed a low voltage unit (10), this low voltage unit receives described low tension loop.
Description
Technical field
The present invention relates to a kind of high pressure fuel pump for internal combustion engine, it has a pump case, in this pump case, carry a pump camshaft and to be formed with at least two pump pistons by a polygonal shaped configurations and be connected, be directed in the pumping cylinder head being assemblied in pump case of these pump pistons movably belonging to each, wherein carry out the conversion of rotary motion to each translational motion of at least two pump pistons of pump camshaft, fuel is aspirated, is compressed to high pressure and flows to a high pressure accumulator by a low tension loop.
Background technique
By the known a kind of high pressure fuel pump of DE69723040T2, the pump piston wherein for compressed fuel driven by the pump camshaft that is bearing in pump case.In the case pump case be made to separately and have be adapted to pump piston relative to the layout of pump camshaft and a low tension loop of existing position situation with the pipeline of a high tension loop, these pipelines maybe will be compressed to the fuel area density of high pressure to a high pressure accumulator for carrying the fuel be under low pressure.
The shortcoming of this mode of execution is: when by the line arrangement of low tension loop in pump case time, due to the structure space situation of local strong variations on different internal-combustion engines, thus the different modification for high pressure fuel pump respectively need to manufacture different pump case, this adds increased manufacture cost.
Therefore task of the present invention is, provides a kind of high-pressure fuel pump, and its pump case can be used on the high pressure fuel pump of different modification as much as possible.
Summary of the invention
This task by based on the preamble of claim 1 and the feature in conjunction with its characteristic solve.Dependent claims subsequently gives each favourable further configuration of the present invention.
The present invention includes such technological guidance, be namely provided with a low voltage unit, it receives low tension loop and is fixed in pump case.Can accomplish thus: the distribution of low pressure line in this low voltage unit adapts to structure space situation in internal-combustion engine region and pump case is made to unified housing, and pump case can be used on the high pressure fuel pump of different modification in like fashion thus.
On the side carrying pump case of low voltage unit, a transfer pump is installed according to another favourable form of implementation of the present invention.This has its advantage, namely can be realized for the extremely compact enforcement of the system of fuel high pressure generation by transfer pump direct layout in this region.
Advantageously this transfer pump is implemented according to the type of gear pump.This implementation type embodies a kind of compact and scheme reliably simultaneously.
On the side of pump case, one is being combined with for the batching unit to the fuel metering by compression in the low voltage unit being arranged in pump case outside in a further configuration of the present invention.This batching unit can be reliably protected in order to avoid the impact of machinery by batching unit being arranged in this region.This enhances the functional reliability of system.
The interface of the low tension loop be arranged in low voltage unit is exceeded according to a favourable further configuration pump case of the present invention and/or pumping cylinder head.This has its advantage, namely makes the interface of low tension loop be blocked effectively to prevent the impact of machinery by pump case or pumping cylinder head thus.
In a further configuration of the present invention, the drive unit of transfer pump is realized by pump camshaft.Can cancel a drive unit separated of transfer pump thus, this makes the compactedness of system improve further.In addition the manufacture cost of this high pressure fuel pump can reduce further.
Bearing according to another form of implementation pump camshaft of the present invention is implemented according to the type of sliding bearing.The firmly also simple supporting simultaneously of pump camshaft can be realized by this measure.
Other corrective measure of the present invention will jointly describe in detail below with by the description of accompanying drawing to a preferred implementing form of the present invention.
Accompanying drawing explanation
Unique accompanying drawing represents a longitudinal section according to high pressure fuel pump of the present invention.
Concrete form of implementation
In figure, a pump camshaft 1 is bearing in a pump case 3 by sliding bearing 2a and 2b.In addition pump camshaft 1 is provided with a polygonal shaped configurations 4, and pump camshaft is formed with two pump piston 5a and 5b contacted by this polygonal shaped configurations, and these pump pistons are each to be movably directed to being assemblied in pumping cylinder head 6a and 6b in pump case.The rotary motion of pump camshaft 1 converts the translational motion of pump piston 5a and 5b to by polygonal shaped configurations 4 in the case.On pump piston 5a and 5b and in corresponding pumping cylinder head 6a and 6b, be respectively provided with pressure chamber 7a and 7b, in each pressure chamber, suck fuel when corresponding pump piston 5a or 5b moves downward by suction valve 8a or 8b belonging to and then carry out compressing when corresponding pump piston 5a or 5b moves upward and be input to a high tension loop by high pressure valve 9a or 9b belonging to each and be input to one thus here in unshowned high pressure accumulator.As feature is in pump case 3, set up the low voltage unit 10 that receives low tension loop.This this low voltage unit 10 external is provided with a gear pump 11 on the side carrying pump case 3, and this gear pump is the transfer pump of low tension loop.Another feature is that a batching unit 12 is combined in low voltage unit 10 on the side towards pump case 3, and this batching unit is only illustrated by the broken lines in the figure.Here batching unit 12 is positioned at the outside of pump case 3.Interface 13a and 13b of low tension loop in this external low voltage unit 10 is exceeded by pump case 3 and pumping cylinder head 6a and 6b, so that these interfaces 13a and 13b is blocked in case the impact of stop machine tool.
Pump case 3 can be made to be configured standard housings, because the different distributions of the pressure piping of low tension loop only need make change in low voltage unit 10 by using low voltage unit 10.
Claims (6)
1. for the high pressure fuel pump of the work of internal-combustion engine, there is a pump case (3), a pump camshaft (1) is bearing in this pump case and by a polygonal shaped configurations (4) and at least two pump piston (5a, 5b) form connection, these pump pistons are movably at the pumping cylinder head (6a be assemblied in this pump case (3) of corresponding configuration, be directed to 6b), wherein, carry out the rotary motion of described pump camshaft (1) to described at least two pump piston (5a, the conversion of each translational motion 5b), so that fuel is aspirated by by a low tension loop, be compressed into high pressure and be fed to a high pressure accumulator, it is characterized in that: in described pump case (3), fix a low voltage unit (10), this low voltage unit receives described low tension loop, wherein, the side carrying described pump case (3) of described low voltage unit (10) has been installed a transfer pump, this transfer pump is arranged in outside described pump case (3), in described low voltage unit (10), on the side towards described pump case (3), be combined with one in described pump case (3) outside treat by the batching unit of the fuel compressed (12) for measuring.
2. high pressure fuel pump according to claim 1, is characterized in that: this transfer pump is implemented according to the type of gear pump (11).
3. according to the high pressure fuel pump of claim 1 or 2, it is characterized in that: described pump case (3) and/or described pumping cylinder head (6a, 6b) exceed described low tension loop, the interface (13a, 13b) be arranged in described low voltage unit (10).
4. high pressure fuel pump according to claim 1, is characterized in that: the described pump camshaft (1) that is driven through of described transfer pump realizes.
5. according to the high pressure fuel pump of claim 1 or 2, it is characterized in that: the bearing device of described pump camshaft (1) is implemented according to the type of sliding bearing (2a, 2b).
6., for the internal-combustion engine of driving machine motor-car, comprise the high pressure fuel pump any one of claim 1 to 5.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008040966.9 | 2008-08-04 | ||
| DE102008040966A DE102008040966A1 (en) | 2008-08-04 | 2008-08-04 | High pressure fuel pump |
| PCT/EP2009/056913 WO2010015436A1 (en) | 2008-08-04 | 2009-06-05 | High-pressure fuel pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102105688A CN102105688A (en) | 2011-06-22 |
| CN102105688B true CN102105688B (en) | 2015-11-25 |
Family
ID=41077992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980129377.4A Expired - Fee Related CN102105688B (en) | 2008-08-04 | 2009-06-05 | High pressure fuel pump |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2310679B1 (en) |
| CN (1) | CN102105688B (en) |
| DE (1) | DE102008040966A1 (en) |
| RU (1) | RU2516081C2 (en) |
| WO (1) | WO2010015436A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6126407A (en) * | 1997-08-20 | 2000-10-03 | Robert Bosch Gmbh | Pump device for high pressure fuel delivery in fuel injection system of internal combustion engines |
| CN101137837A (en) * | 2005-03-09 | 2008-03-05 | 卡特彼勒公司 | High pressure pump and method of reducing fluid mixing within same |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2068110C1 (en) * | 1992-01-29 | 1996-10-20 | Олег Иванович Савинов | Fuel injection system for internal combustion engine |
| RU2116496C1 (en) * | 1994-10-24 | 1998-07-27 | Александр Алексеевич Пустынцев | Multifunction pump unit |
| IT239879Y1 (en) | 1996-12-23 | 2001-03-13 | Elasis Sistema Ricerca Fiat | REFINEMENTS TO A PISTON PUMP, IN PARTICULAR TO A RADIAL APISTON PUMP FOR THE FUEL OF AN INTERNAL COMBUSTION ENGINE. |
| DE10228551A1 (en) * | 2002-06-26 | 2004-01-22 | Siemens Ag | Radial piston pump |
| DE10337847A1 (en) * | 2003-08-18 | 2005-03-17 | Robert Bosch Gmbh | Pump arrangement with a high-pressure pump and a low-pressure pump upstream of this for a fuel injection device of an internal combustion engine |
| JP2007154711A (en) * | 2005-12-02 | 2007-06-21 | Denso Corp | Fuel injection pump |
-
2008
- 2008-08-04 DE DE102008040966A patent/DE102008040966A1/en not_active Withdrawn
-
2009
- 2009-06-05 CN CN200980129377.4A patent/CN102105688B/en not_active Expired - Fee Related
- 2009-06-05 EP EP09779639.5A patent/EP2310679B1/en not_active Not-in-force
- 2009-06-05 WO PCT/EP2009/056913 patent/WO2010015436A1/en active Application Filing
- 2009-06-05 RU RU2011108007/06A patent/RU2516081C2/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6126407A (en) * | 1997-08-20 | 2000-10-03 | Robert Bosch Gmbh | Pump device for high pressure fuel delivery in fuel injection system of internal combustion engines |
| CN101137837A (en) * | 2005-03-09 | 2008-03-05 | 卡特彼勒公司 | High pressure pump and method of reducing fluid mixing within same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102105688A (en) | 2011-06-22 |
| RU2516081C2 (en) | 2014-05-20 |
| EP2310679B1 (en) | 2018-01-24 |
| WO2010015436A1 (en) | 2010-02-11 |
| RU2011108007A (en) | 2012-09-10 |
| EP2310679A1 (en) | 2011-04-20 |
| DE102008040966A1 (en) | 2010-02-11 |
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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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 Termination date: 20160605 |