EP1570178A1 - Hochdruckpumpe f r eine kraftstoffeinspritzeinrichtung einer brennkraftmaschine - Google Patents
Hochdruckpumpe f r eine kraftstoffeinspritzeinrichtung einer brennkraftmaschineInfo
- Publication number
- EP1570178A1 EP1570178A1 EP03812124A EP03812124A EP1570178A1 EP 1570178 A1 EP1570178 A1 EP 1570178A1 EP 03812124 A EP03812124 A EP 03812124A EP 03812124 A EP03812124 A EP 03812124A EP 1570178 A1 EP1570178 A1 EP 1570178A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure pump
- ring
- solid lubricant
- pump according
- drive shaft
- 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 title claims description 21
- 238000002485 combustion reaction Methods 0.000 title claims description 8
- 238000002347 injection Methods 0.000 title claims description 5
- 239000007924 injection Substances 0.000 title claims description 5
- 239000000314 lubricant Substances 0.000 claims abstract description 29
- 239000007787 solid Substances 0.000 claims abstract description 29
- 239000011230 binding agent Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 4
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 238000005461 lubrication Methods 0.000 description 6
- 150000002484 inorganic compounds Chemical class 0.000 description 3
- 229910010272 inorganic material Inorganic materials 0.000 description 3
- 150000002894 organic compounds Chemical class 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009760 electrical discharge machining Methods 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 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
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/102—Mechanical drive, e.g. tappets or cams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0001—Fuel-injection apparatus with specially arranged lubricating system, e.g. by fuel oil
-
- 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
- F04B1/053—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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2203/00—Non-metallic inorganic materials
- F05C2203/08—Ceramics; Oxides
- F05C2203/0804—Non-oxide ceramics
- F05C2203/0808—Carbon, e.g. graphite
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2203/00—Non-metallic inorganic materials
- F05C2203/08—Ceramics; Oxides
- F05C2203/0804—Non-oxide ceramics
- F05C2203/0856—Sulfides
- F05C2203/086—Sulfides of molybdenum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2203/00—Non-metallic inorganic materials
- F05C2203/08—Ceramics; Oxides
- F05C2203/0865—Oxide ceramics
- F05C2203/0882—Carbon, e.g. graphite
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/04—PTFE [PolyTetraFluorEthylene]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2251/00—Material properties
- F05C2251/14—Self lubricating materials; Solid lubricants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2253/00—Other material characteristics; Treatment of material
- F05C2253/12—Coating
Definitions
- the invention relates to a high-pressure pump for a fuel injection device of an internal combustion engine according to the preamble of claim 1.
- Such a high pressure pump is known from DE 198 29 548 AI.
- This high-pressure pump has a drive shaft and at least one pump element with a pump piston driven in one stroke by the drive shaft.
- the drive shaft has a shaft section which is formed eccentrically to its axis of rotation and on which a ring is rotatably mounted.
- the pump piston is supported on the ring by a support element. The rotary movement of the drive shaft is converted into a stroke movement of the pump piston via the ring, which does not rotate with the drive shaft.
- High forces act in the contact area between the ring and the support element due to the pressure generated by the pump piston. For further reductions in consumption and pollutant emissions in internal combustion engines, ever higher pressures are required for fuel injection, which are caused by the
- High pressure pump must be generated. This increases the load on the components of the high-pressure pump and increases the wear on the ring and the support element.
- new fuels are being developed which contain little sulfur in particular, but which impair the lubricating properties of the fuel. Because of this, under certain circumstances insufficient life of the high pressure pump can be guaranteed.
- the high-pressure pump according to the invention with the features according to claim 1 has the advantage that the wear resistance of the ring and the support element is improved in such a way that the high-pressure pump achieves a sufficient service life even when generating very high pressures and with a low lubricating effect of the fuel.
- FIG. 1 shows a high-pressure pump in a longitudinal section.
- 2 shows the high-pressure pump in a cross section along line II-II in FIG. 1
- FIG. 3 shows a section of the high-pressure pump, designated III in FIG. 2, with a first embodiment of microwells and the
- Figures 4 to 6 further versions of microwells.
- the high-pressure pump delivers fuel under high pressure of up to 2000 bar, for example into a memory, from which fuel is injected to the internal combustion engine is removed.
- the high-pressure pump has a housing 10 in which a drive shaft 12 is rotatably mounted about an axis 13. At least one, preferably a plurality of pump elements 14, which are driven by the drive shaft 12, are arranged in the housing 10.
- the drive shaft 12 has a shaft section 16 which is formed eccentrically to its axis of rotation 13 and on which a ring 18 is rotatably mounted.
- the pump elements 14 each have a pump piston 20 which is displaceably and sealingly guided in a cylinder bore 22 which extends at least approximately radially to the axis of rotation 13 of the drive shaft 12.
- the pump piston 20 of each pump element 14 is supported with its piston foot 21 via a support element 24 on the ring 18.
- the piston foot 21 can by a spring 26, which is on the one hand on the housing 10 and on the other hand via a
- Spring plate 23 is supported on the support element 24, held in contact with the support element 24 and via this on the ring 18.
- the support element 24 can be designed, for example, as a support plate or as a plunger.
- a pump work chamber 28 is delimited by the respective pump piston 20 and can be connected to a fuel supply line in which low pressure prevails through an inlet valve 30 opening into the pump work chamber 28.
- the pump work space 28 can also be connected to the reservoir by an outlet valve 32 opening towards the reservoir.
- the ring 18 Corresponding to the number of pump elements 14, the ring 18 has flats 34 on its outside, against which the respective support element 24 rests.
- the ring 18 and the support elements 24 are subjected to an oscillating load due to the cyclical loading and unloading of the pump pistons 20 during their delivery stroke and suction stroke, by different pressure forces acting in the contact area between the support elements 24 and the ring 18.
- the amount of fuel delivered by the high-pressure pump can be adapted to the requirements of the internal combustion engine.
- the inflow of fuel into the pump work spaces 28 can be limited in such a way that they are only partially filled.
- a solid lubricant layer 40 is applied to the outside of the ring 18 at least on the flats 34, which represent the contact area with the support elements 24.
- the ring 18 also has a plurality of microwells 42 on its outside, at least on the flats 34 and thus in the contact area with the support elements 24, which are shown enlarged in FIGS. 3 to 6.
- the ring 18 is preferably made of steel.
- the micro-depressions 42 can be designed as cups which are arranged uniformly or irregularly distributed over the surface of the flats 34 of the ring 18.
- the micro-depressions 42 can alternatively also be formed as at least approximately straight grooves, as shown in FIG.
- the micro-depressions 42 can alternatively also be formed, as shown in FIG. 5, as intersecting grooves which run over the surface of the flats 34 of the ring 18.
- the micro-depressions 42 can alternatively also be formed, as shown in FIG. 6, as grooves which run at least approximately in the shape of a segment of a circle and which are arranged at least approximately concentrically to one another and distributed over the surface of the flats 34 of the ring 18.
- a combination of the different designs of the microwells 42 explained above can also be used.
- the micro-depressions 42 preferably have a depth of approximately 2 to 30 ⁇ m, a width of approximately 15 to 30 ⁇ m and are arranged at a distance of approximately 30 to 150 ⁇ m from one another.
- the micro-depressions 42 can be introduced into the surface of the flats 34 of the ring 18 by means of known processing methods such as laser production, hard turning, spark erosion or lithopraphic methods.
- the solid lubricant layer 40 is applied to the surface of the flats 34 of the ring 18 and can cover the entire surface, ie not only the microwells 42 but also the raised areas lying between them. In the surface of the '
- Solid lubricant layer 40 can Microwells 42 are correspondingly depicted as wells . his. Fuel can collect in the depressions of the solid lubricant layer 40, as a result of which the lubrication between the ring 18 and the support elements 24 is improved.
- the solid lubricant layer 40 is present between the contact areas of the ring 18 and the support elements 24 and facilitates the running-in of the high-pressure pump, the solid lubricant layer 40 being removed during the operation of the high-pressure pump. After a certain period of operation of the high pressure pump, the
- Solid lubricant layer 40 is only present in the microwells 42. With further wear of the ring 18, further solid lubricant constantly emerges from the micro-depressions 42 and improves the lubrication between the ring 18 and the support elements 24.
- Solid lubricant layer 40 in its initial state is, for example, between 10 ⁇ m and 20 ⁇ m.
- the solid lubricant layer 40 is first applied to the ring 18 and then the microwells 42 are produced. In this case, there is no solid lubricant in the micro-depressions 42, but these have the effect that fuel collects in them, which improves the lubrication between the ring 18 and the support elements 24.
- the solid lubricant layer 40 is only introduced into the micro-depressions 42 and that the raised areas lying between these do not have a solid lubricant layer 40.
- solid lubricant then constantly escapes from the micro-depressions 42 due to the wear and tear and improves the lubrication between the ring 18 and the support elements 24.
- the solid lubricant layer 40 only partially fills the micro-depressions 42 in the direction of their depth. In this case, fuel can collect in the micro-depressions 42 at the start of the operation of the high-pressure pump, as a result of which the lubrication between the ring 18 and the support elements 24 is improved.
- the depth of the micro-depressions 42 decreases due to the wear, so that the solid lubricant gradually emerges from them and then improves the lubrication between the ring 18 and the support elements 24.
- the solid lubricant layer 40 consists of a binder material in which solid lubricant particles are embedded.
- the solid lubricant layer 40 can be applied to the ring 18, for example in the form of a liquid lacquer or using other known application techniques.
- the binder material can consist of organic or inorganic compounds.
- the use of inorganic compounds for the binder material offers the advantage of higher temperature resistance than organic compounds.
- the use of organic compounds for the binder material offers the advantage of better corrosion resistance than inorganic compounds.
- the choice of binder material is based on the requirements regarding temperature resistance and fuel resistance.
- the solid lubricant particles are uniformly present in the binder material as particles with a size of a few ⁇ m, preferably between about 3 and 8 ⁇ m in diameter.
- polytetrafluoroethylene or graphite or molybdenum disulfide can be used as solid lubricants, it also being possible to use a mixture of these substances.
- a mixture of polytetrafluoroethylene and molybdenum disulfide enables a low coefficient of friction between the ring 18 and the support elements 24.
- a chemical pretreatment of the surface of the ring 18 can be carried out, for example phosphating, which produces an adhesion-promoting intermediate layer 44.
- This intermediate layer is to be applied in such a way that the microwells 42 are not leveled by it.
- the thickness of the intermediate layer should be a maximum of approximately 20% of the depth of the microwells 42.
- the support elements 24 can also be provided in their contact area with the ring 18 with a corresponding solid lubricant layer 40 and microwells 42 as described above.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10256528 | 2002-12-04 | ||
DE10256528A DE10256528A1 (de) | 2002-12-04 | 2002-12-04 | Hochdruckpumpe für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine |
PCT/DE2003/002703 WO2004051084A1 (de) | 2002-12-04 | 2003-08-11 | Hochdruckpumpe für eine kraftstoffeinspritzeinrichtung einer brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1570178A1 true EP1570178A1 (de) | 2005-09-07 |
EP1570178B1 EP1570178B1 (de) | 2011-06-08 |
Family
ID=32335940
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03812124A Expired - Lifetime EP1570178B1 (de) | 2002-12-04 | 2003-08-11 | Hochdruckpumpe für eine kraftstoffeinspritzeinrichtung einer brennkraftmaschine |
Country Status (6)
Country | Link |
---|---|
US (1) | US7278348B2 (de) |
EP (1) | EP1570178B1 (de) |
JP (1) | JP2006509142A (de) |
CN (1) | CN100557234C (de) |
DE (1) | DE10256528A1 (de) |
WO (1) | WO2004051084A1 (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20313014U1 (de) * | 2003-08-21 | 2004-12-23 | Robert Bosch Gmbh | Hochdruckpumpe für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine |
DE102007044499A1 (de) | 2007-09-18 | 2009-03-19 | Robert Bosch Gmbh | Kraftstoffpumpe, insbesondere für ein Kraftstoffsystem einer Kolben-Brennkraftmaschine |
DE102007047015A1 (de) * | 2007-10-01 | 2009-04-02 | Robert Bosch Gmbh | Beschichtetes Bauteil und Verfahren zur Herstellung eines solchen Bauteils |
DE102007060772A1 (de) * | 2007-12-17 | 2009-06-18 | Robert Bosch Gmbh | Pumpe, insbesondere Kraftstoffhochdruckpumpe |
DE102008001713A1 (de) * | 2008-05-13 | 2009-11-19 | Robert Bosch Gmbh | Radialkolbenpumpe |
IT1392791B1 (it) * | 2008-07-17 | 2012-03-23 | Bosch Gmbh Robert | Pompa di alta pressione per alimentare combustibile ad un motore a combustione interna |
JP2010216262A (ja) * | 2009-03-12 | 2010-09-30 | Denso Corp | 燃料噴射ポンプ |
DE102009027272A1 (de) * | 2009-06-29 | 2010-12-30 | Robert Bosch Gmbh | Hochdruckpumpe |
IT1394573B1 (it) * | 2009-07-07 | 2012-07-05 | Bosch Gmbh Robert | Pompa ad alta pressione migliorata per alimentare combustibile a un motore a combustione interna e anello di tenuta albero migliorato per la stessa |
ATE554283T1 (de) * | 2009-07-08 | 2012-05-15 | Delphi Tech Holding Sarl | Pumpeneinheit |
DE102010063351A1 (de) * | 2010-12-17 | 2012-06-21 | Robert Bosch Gmbh | Hochdruckpumpe |
DE102013204897A1 (de) | 2013-03-20 | 2014-09-25 | Robert Bosch Gmbh | Pumpe, insbesondere Kraftstoffhochdruckpumpe für eine Kraftstoffeinspritzeinrichtung |
US9816493B2 (en) * | 2013-03-21 | 2017-11-14 | Exergy Engineering Llc | Fuel injection pump |
DE102013210036A1 (de) * | 2013-05-29 | 2014-12-04 | Robert Bosch Gmbh | Hochdruckpumpe für ein Kraftstoffeinspritzsystem |
DE102013212047A1 (de) | 2013-06-25 | 2015-01-08 | Robert Bosch Gmbh | Pumpvorrichtung, insbesondere Kraftstoffhochdruckpumpvorrichtung für eine Kraftstoffeinspritzeinrichtung |
CN103470416B (zh) * | 2013-09-26 | 2016-08-17 | 南岳电控(衡阳)工业技术股份有限公司 | 一种应用于高压共轨燃油喷射系统的径向柱塞供油泵 |
DE102014220937B4 (de) * | 2014-10-15 | 2016-06-30 | Continental Automotive Gmbh | Antriebsvorrichtung zum Antreiben einer Kraftstoffhochdruckpumpe sowie Kraftstoffhochdruckpumpe |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3628425A (en) * | 1968-12-13 | 1971-12-21 | Messrs Mitsubishi Jukogyo Kk | Fluid motor-pump construction |
DE2716890A1 (de) * | 1977-04-16 | 1978-10-19 | Rexroth Gmbh G L | Radialkolbenpumpe |
US4799654A (en) * | 1981-01-13 | 1989-01-24 | Karl Eickmann | Fluid flow facilitating arrangement which includes a coned ring |
JPH0216370A (ja) * | 1988-07-01 | 1990-01-19 | Kayaba Ind Co Ltd | ラジアルピストンポンプ |
JP3114874B2 (ja) * | 1990-09-28 | 2000-12-04 | 株式会社豊田自動織機製作所 | ピストンリングをもつ圧縮機用ピストン |
JPH06280740A (ja) * | 1993-03-26 | 1994-10-04 | Zexel Corp | 低粘性燃料油用ラジアルピストンポンプ |
DE19635164A1 (de) * | 1996-08-30 | 1998-03-05 | Bosch Gmbh Robert | Kolbenpumpe |
IT239879Y1 (it) * | 1996-12-23 | 2001-03-13 | Elasis Sistema Ricerca Fiat | Perfezionamenti ad una pompa a pistoni, in particolare ad una pompa apistoni radiali per il carburante di un motore a combustione interna. |
JP4023872B2 (ja) * | 1997-06-26 | 2007-12-19 | 大豊工業株式会社 | 斜板式コンプレッサー用斜板 |
JPH11157954A (ja) * | 1997-11-30 | 1999-06-15 | Ngk Spark Plug Co Ltd | セラミック部材と金属部材との接合体 |
DE19836901C2 (de) * | 1998-08-14 | 2002-08-29 | Bosch Gmbh Robert | Radialkolbenpumpe |
US6183212B1 (en) | 1999-02-17 | 2001-02-06 | Stanadyne Automotive Corp. | Snap-in connection for pumping plunger sliding shoes |
JP2002227761A (ja) * | 2001-02-02 | 2002-08-14 | Ichimaru Giken:Kk | ラジアルプランジャポンプ |
DE10249818B4 (de) * | 2002-10-24 | 2005-10-20 | Daimler Chrysler Ag | Oberfläche eines Körpers, auf dem ein anderer Körper in einer bevorzugten Gleitrichtung gegeneinander gleitend anordenbar ist |
-
2002
- 2002-12-04 DE DE10256528A patent/DE10256528A1/de not_active Withdrawn
-
2003
- 2003-08-11 WO PCT/DE2003/002703 patent/WO2004051084A1/de active Application Filing
- 2003-08-11 JP JP2004555988A patent/JP2006509142A/ja active Pending
- 2003-08-11 EP EP03812124A patent/EP1570178B1/de not_active Expired - Lifetime
- 2003-08-11 CN CNB038255391A patent/CN100557234C/zh not_active Expired - Fee Related
- 2003-08-11 US US10/537,247 patent/US7278348B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2004051084A1 * |
Also Published As
Publication number | Publication date |
---|---|
US7278348B2 (en) | 2007-10-09 |
DE10256528A1 (de) | 2004-06-24 |
US20060093490A1 (en) | 2006-05-04 |
CN100557234C (zh) | 2009-11-04 |
WO2004051084A1 (de) | 2004-06-17 |
JP2006509142A (ja) | 2006-03-16 |
CN1714239A (zh) | 2005-12-28 |
EP1570178B1 (de) | 2011-06-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1570178A1 (de) | Hochdruckpumpe f r eine kraftstoffeinspritzeinrichtung einer brennkraftmaschine | |
EP1658433B1 (de) | Hochdruckpumpe für eine kraftstoffeinspritzeinrichtung einer brennkraftmaschine | |
DE102006041673A1 (de) | Hochdruckpumpe, insbesondere für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine | |
DE19905462A1 (de) | Keramischer Plungerkolben für ein Hochdruckkraftstoffsystem eines Innenverbrennungsmotors | |
DE102012202720A1 (de) | Hochdruckpumpe | |
EP1013926B1 (de) | Hydraulische Verdrängermaschine, insbesondere Verdrängerpumpe | |
WO2005031151A1 (de) | Stössel für eine hochdruckpumpe und hochdruckpumpe mit wenigstens einem stössel | |
DE102008001960A1 (de) | Pumpe, insbesondere Kraftstoffhochdruckpumpe | |
DE102008010242A1 (de) | Hochdruckerzeuger für Einspritzanlagen von Brennkraftmaschinen | |
DE102011055871A1 (de) | Kraftstoffversorgungspumpe und Verfahren zur Herstellung eines Gehäuses für diese | |
DE19836901C2 (de) | Radialkolbenpumpe | |
DE10259178A1 (de) | Hochdruckpumpe für eine Kraftstoffspritzeinrichtung einer Brennkraftmaschine | |
DE102013219284A1 (de) | Pumpe, insbesondere Kraftstoffhochdruckpumpe für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine | |
DE102012101585B4 (de) | Hochdruck-Kraftstoffpumpe | |
DE19844326A1 (de) | Radialkolbenpumpe | |
DE102014224724A1 (de) | Hochdruckpumpe | |
DE102004018163A1 (de) | Radialkolbenpumpe | |
DE102008043993B3 (de) | Common-Rail-Hochdruckpumpe | |
DE102008042877A1 (de) | Hochdruckpumpenanordnung | |
DE10313745A1 (de) | Hochdruckpumpe für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine | |
DE102009028392A1 (de) | Hochdruckpumpe | |
EP1583908A1 (de) | Hochdruckpumpe für eine kraftstoffeinspritzeinrichtung einer brennkraftmaschine | |
DE102017218730A1 (de) | Kraftstoffhochdruckpumpe | |
DE102007035100A1 (de) | Pumpe, insbesondere Kraftstoffhochdruckpumpe | |
EP1798415B1 (de) | Hochdruckpumpe |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20050704 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR |
|
RBV | Designated contracting states (corrected) |
Designated state(s): DE FR IT |
|
17Q | First examination report despatched |
Effective date: 20101008 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAC | Information related to communication of intention to grant a patent modified |
Free format text: ORIGINAL CODE: EPIDOSCIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR IT |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 50313753 Country of ref document: DE Effective date: 20110721 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20120309 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 50313753 Country of ref document: DE Effective date: 20120309 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20120824 Year of fee payment: 10 Ref country code: FR Payment date: 20120831 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20121024 Year of fee payment: 10 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140301 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 50313753 Country of ref document: DE Effective date: 20140301 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20140430 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130811 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130902 |