EP1676031A1 - Radialkolbenpumpe für common rail einspritzsysteme - Google Patents
Radialkolbenpumpe für common rail einspritzsystemeInfo
- Publication number
- EP1676031A1 EP1676031A1 EP04787234A EP04787234A EP1676031A1 EP 1676031 A1 EP1676031 A1 EP 1676031A1 EP 04787234 A EP04787234 A EP 04787234A EP 04787234 A EP04787234 A EP 04787234A EP 1676031 A1 EP1676031 A1 EP 1676031A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- pump
- radial piston
- pressure accumulator
- pressure pump
- 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
Classifications
-
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
-
- 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
- F02M59/04—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 special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps
- F02M59/06—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 special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps with cylinders arranged radially to driving shaft, e.g. in V or star arrangement
-
- 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
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/40—Fuel-injection apparatus with fuel accumulators, e.g. a fuel injector having an integrated fuel accumulator
Definitions
- the invention relates to a radial piston high pressure pump for common rail injection systems with a high pressure accumulator integrated in the radial piston high pressure pump.
- a radial piston high-pressure pump for common rail injection systems with a high-pressure accumulator integrated in the radial piston high-pressure pump is already known from the applicant's older, subsequently published patent application DE 10228551.9.
- the radial piston high-pressure pump has a housing in which a drive shaft is guided.
- the drive shaft has an eccentric section on which a cam ring is mounted.
- a plurality of pump pistons are preferably supported on the cam ring and are radially movable in the pump size with respect to the drive shaft.
- a suction valve and a pressure valve are assigned to each pump piston. Fuel from the low pressure range is fed to the pump piston via the suction valve.
- the compressed fuel is discharged via the pressure valve and fed to the common high-pressure accumulator (common rail) via a high-pressure line.
- the high pressure accumulator is integrated in a peripheral area of the radial piston high pressure pump.
- a disadvantage of such a solution is the sometimes very complicated routing of the high-pressure lines to the high-pressure reservoir, rather within the pump housing.
- the object of the invention is therefore to provide a radial piston high-pressure pump for common rail injection systems with a high-pressure accumulator integrated in the radial piston high-pressure pump, which is simple and inexpensive to manufacture.
- the object is achieved by the features of the independent claim.
- Advantageous embodiments of the invention are characterized in the subclaims.
- the invention is characterized in that the high-pressure accumulator is designed in a ring shape.
- the ring-shaped design of the high-pressure accumulator enables particularly economical and simple manufacture.
- the annular design of the high-pressure accumulator has the advantage that the high-pressure lines can open out at any point in the high-pressure accumulator. This results in very short and easy to train high pressure lines.
- a preferred embodiment of the invention provides for the high-pressure accumulator to be arranged concentrically with the drive shaft. This results in a symmetrical and particularly compact arrangement of the high-pressure fuel lines within the pump.
- a further preferred embodiment of the invention provides for the high-pressure accumulator to be formed by an annular groove introduced into the end of the pump housing and for this to be closed with a cover.
- the annular groove can be introduced into the pump housing in a particularly simple manner, for example by turning.
- the ring groove can be produced in one step with the production of the housing bore, which is required for the drive shaft, without the pump housing having to be reclamped during production. This results in a particularly inexpensive manufacture.
- the lid can also be manufactured as an inexpensive turned part.
- a further advantageous embodiment of the invention provides for at least one metallic sealing surface to be formed on the pump housing and / or on the cover in order to seal the high-pressure accumulator.
- an additional sealing element can be connected to an additional sealing element i-Qi-7 i ⁇ ⁇ f ⁇ t- uorHo ⁇ Fl ⁇ o ⁇ io al 1 i onVio 200315562
- the metallic sealing surface can preferably be formed by raised areas in the pump housing and / or in the cover.
- Another advantageous embodiment of the invention provides for the cover to be connected to the pump housing by means of a central screw arranged concentrically with the annular groove.
- the central screw offers the advantage that the force is distributed evenly over the entire circumference of the annular groove, which ensures a secure seal of the high-pressure accumulator.
- a through hole is made in the central screw, through which a leakage current can be discharged from the radial piston high-pressure pump.
- a further advantageous embodiment of the invention provides for the high-pressure accumulator to be designed as an annular groove, the annular groove being introduced into the outer circumference of a rotationally symmetrical pump insert.
- the annular groove can be made very easily and inexpensively, for example by turning, in the outer circumference of the rotationally symmetrical pump insert.
- the pump insert is pushed into a corresponding opening in the pump housing and the outer peripheral surface of the rotationally symmetrical pump insert interacts with the inner peripheral surface of the pump housing.
- the pump insert is cylindrical.
- the cylindrical design enables a particularly simple and inexpensive manufacture of the pump insert and the corresponding pump opening.
- a further advantageous embodiment of the invention provides that at least one high-pressure valve; 7i ⁇ Vpr ⁇ nrrmn ⁇ vnn ⁇ pni ⁇ s priR pi npm Tni ektor ei 200315562
- the high-pressure connection can be formed in the pump housing or in the pump cover.
- a further advantageous embodiment of the invention provides that the high-pressure accumulator is operatively connected to a pressure relief valve integrated in the radial piston high-pressure pump or arranged on the radial piston high-pressure pump.
- the integration of the pressure relief valve or the arrangement in the immediate vicinity of the radial piston high-pressure pump enables a particularly compact design.
- FIG. 1 shows a first embodiment of the radial piston high-pressure pump, in which the high-pressure accumulator is formed by an annular groove made on the end face in the pump housing and is closed by a cover,
- FIG. 2 shows a second embodiment of the radial piston high-pressure pump, in which the high-pressure accumulator is designed as an annular groove, which is introduced into the outer circumference of a rotationally symmetrical pump insert.
- FIG. 1 shows a first embodiment of the radial piston high pressure pump.
- the radial piston high-pressure pump has a pump housing 1 in which a drive shaft 2 is rotatably mounted.
- the drive shaft 2 is designed as an eccentric shaft.
- three pump pistons 3 are preferably arranged at an angle of 120 ° to one another. During one revolution of the drive shaft? neither pump piston 3 leads a complete suction and 200315562
- the pump housing 1 can be processed in one step without reclamping, which results in a particularly simple manufacturing process.
- the open side of the high-pressure accumulator 4 is closed by a cover 5.
- the cover 5 is screwed to the pump housing 1 via a central screw 8.
- the central screw 8 offers the advantage that the force is distributed evenly over the entire circumference of the annular groove due to the central arrangement.
- a through hole 14 is formed in the central screw 8, through which a leakage current is discharged from the pump housing 1. Additional screws, which are distributed around the circumference of the cover 5, can be used for a particularly secure sealing of the high-pressure accumulator 4.
- a plurality of high-pressure connections 12 are formed in the cover 5.
- the high-pressure accumulator 4 can be connected to the individual injectors of the internal combustion engine via the high-pressure connections 12.
- a secure seal of the cover is ensured by metallic sealing surfaces.hp fi. 7 ⁇ p réellerl i continuously.
- the raised area can be formed in the cover 5 and / or in the pump housing 1.
- the ring-shaped high-pressure accumulator 4 which is integrated in the pump housing 1, enables a particularly compact design.
- each high-pressure line 16 opens individually into the high-pressure accumulator in the embodiment according to the invention. This eliminates the otherwise common intersection of holes when the individual high-pressure lines meet. Borehole intersection has so far been very problematic, particularly with regard to component strength.
- the high-pressure line 16 can be made as short as possible.
- the short high-pressure lines 16 can be manufactured with a greater tolerance, since deviations on the short length are not as noticeable. In the state of the art, on the other hand, very small tolerances must be observed, since it can otherwise happen that the individual high-pressure lines do not meet exactly.
- the lines In order to implement high-pressure lines 16 that are as short as possible, the lines preferably lead into the high-pressure accumulator at an angle of 120 ° to one another.
- Figure 2 shows a second embodiment of the radial piston high pressure pump.
- the basic mode of operation of the radial piston high-pressure pump is identical to the first exemplary embodiment, to which reference is also made here.
- the high-pressure accumulator 4 is not formed in the pump housing 1 but in a pump insert 10.
- the high-pressure accumulator 4 is designed as an annular groove in the outer surface of a rotationally symmetrical pump insert 10.
- the ring groove can again be introduced in a simple manner, in particular by a machining process, for example turning.
- a cylindrical pump insert is preferably selected as the rotationally symmetrical pump insert, since this is easy to manufacture and with the smallest tolerances.
- other rotationally symmetrical inserts are also conceivable, for example a conically shaped pump insert.
- the pump insert 10 is inserted into an appropriately designed opening of the pump housing 1 and, not shown in FIG. 2, is fixed by additional fastening elements.
- the outer circumferential surface 9 of the pump insert 10 corresponds to the inner circumferential surface 11 of the pump housing 1. This ensures that the pump insert 10 is seated without play.
- the play-free seat already provides a good seal between the pump housing 1 and the pump insert 10.
- additional sealing lips are provided in the area of the high-pressure accumulator 4 in the pump insert 10 and / or in the pump housing 1.
- the high-pressure lines 16 can again be made very short 200315562
- High-pressure accumulator 4 can open. They preferably open into the high-pressure accumulator 4 at an angle of 120 ° to one another.
- a particularly compact design of the injection system results if a pressure relief valve required for regulation is integrated directly into the high-pressure accumulator 4 or is attached directly to the pump housing 1.
- High-pressure connections 12 are formed in the pump housing 1, via which the high-pressure accumulator 4 can be connected to the injectors of an internal combustion engine. Alternatively, the high-pressure connections 12 can also be introduced into the pump insert 10.
- the invention is thus characterized in that the annular design of the high-pressure accumulator 4 enables particularly inexpensive and simple manufacture. Because the high-pressure ducts 16 can open into the high-pressure accumulator 4 at any point, particularly short high-pressure ducts 16 can be realized. Overall, the radial piston high-pressure pump according to the invention enables a particularly compact design of the radial piston pump and high-pressure accumulator.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10349310A DE10349310B3 (de) | 2003-10-23 | 2003-10-23 | Radialkolbenpumpe für Common Rail Einspritzsysteme |
| PCT/EP2004/052338 WO2005040609A1 (de) | 2003-10-23 | 2004-09-28 | Radialkolbenpumpe für common rail einspritzsysteme |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1676031A1 true EP1676031A1 (de) | 2006-07-05 |
| EP1676031B1 EP1676031B1 (de) | 2015-07-29 |
Family
ID=34442219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04787234.6A Expired - Lifetime EP1676031B1 (de) | 2003-10-23 | 2004-09-28 | Radialkolbenpumpe für common rail einspritzsysteme |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7647918B2 (de) |
| EP (1) | EP1676031B1 (de) |
| CN (1) | CN100422550C (de) |
| DE (1) | DE10349310B3 (de) |
| WO (1) | WO2005040609A1 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009000964A1 (de) * | 2009-02-18 | 2010-08-19 | Robert Bosch Gmbh | Hochdruckkraftstoffpumpe für eine Brennkraftmaschine |
| DE102009000965A1 (de) * | 2009-02-18 | 2010-08-19 | Robert Bosch Gmbh | Hochdruckkraftstoffpumpe mit intergriertem Hochdruckspeicher |
| DE102010001252A1 (de) * | 2010-01-27 | 2011-07-28 | Robert Bosch GmbH, 70469 | Kraftstoffeinspritzsystem mit integriertem Hochdruckspeicher an einem Zylinderkopf |
| DE102010002291A1 (de) * | 2010-02-24 | 2011-08-25 | Robert Bosch GmbH, 70469 | Hochdruckpumpe und Hochdruckspeicher |
| DE102014220937B4 (de) * | 2014-10-15 | 2016-06-30 | Continental Automotive Gmbh | Antriebsvorrichtung zum Antreiben einer Kraftstoffhochdruckpumpe sowie Kraftstoffhochdruckpumpe |
| US9593653B2 (en) | 2015-01-21 | 2017-03-14 | Ford Global Technologies, Llc | Direct injection fuel pump system |
| DE102016106232B3 (de) * | 2016-04-06 | 2017-08-31 | L'orange Gmbh | Radialkolbenpumpe, insbesondere für Kraftstoff, mit mehreren Speicherbohrungen im Gehäuse der Radialkolbenpumpe |
| DE102018215132A1 (de) * | 2018-09-06 | 2020-03-12 | Ford Global Technologies, Llc | Hochdruckpumpe für eine Treibstoffzufuhr eines Verbrennungsmotors |
| JP7836296B2 (ja) | 2020-09-10 | 2026-03-26 | カミンズ インコーポレーテッド | 燃料ポンプ装置、システム、及び方法 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2679808A (en) | 1949-04-22 | 1954-06-01 | Bernard M Thun | Fluid pressure generator |
| US5634777A (en) | 1990-06-29 | 1997-06-03 | Albertin; Marc S. | Radial piston fluid machine and/or adjustable rotor |
| CN2202803Y (zh) * | 1994-09-19 | 1995-07-05 | 霍启顺 | 径向柱塞泵 |
| DE19801398A1 (de) * | 1998-01-16 | 1999-07-22 | Bosch Gmbh Robert | Radialkolbenpumpe zur Kraftstoffhochdruckversorgung |
| EP0979353B1 (de) * | 1998-02-27 | 2004-09-29 | Stanadyne Corporation | Brennstoffzufuhrpumpe für benzineinspritzanlagen |
| DE19920998B4 (de) * | 1999-05-06 | 2004-11-04 | Siemens Ag | Radialkolbenpumpe |
| US6669166B2 (en) * | 2000-07-28 | 2003-12-30 | Nippon Soken, Inc. | Electromagnetic valve |
| DE10118884A1 (de) * | 2001-04-18 | 2002-11-07 | Bosch Gmbh Robert | Hochdruck-Kraftstoffpumpe für ein Kraftstoffsystem einer direkteinspritzenden Brennkraftmaschine, Kraftstoffsystem sowie Brennkraftmaschine |
| DE10139519A1 (de) | 2001-08-10 | 2003-02-27 | Bosch Gmbh Robert | Radialkolbenpumpe zur Kraftstoffhochdruckerzeugung, sowie Verfahren zum Betreiben einer Brennkraftmaschine, Computerprogramm und Steuer- und/oder Regelgerät |
| WO2003023232A2 (en) * | 2001-09-10 | 2003-03-20 | Stanadyne Corporation | Hybrid demand control for hydraulic pump |
| DE10228552B9 (de) * | 2002-06-26 | 2007-08-23 | Siemens Ag | Radialkolbenpumpeneinheit |
| DE10228551A1 (de) * | 2002-06-26 | 2004-01-22 | Siemens Ag | Radialkolbenpumpe |
-
2003
- 2003-10-23 DE DE10349310A patent/DE10349310B3/de not_active Expired - Fee Related
-
2004
- 2004-09-28 CN CNB2004800310962A patent/CN100422550C/zh not_active Expired - Fee Related
- 2004-09-28 EP EP04787234.6A patent/EP1676031B1/de not_active Expired - Lifetime
- 2004-09-28 WO PCT/EP2004/052338 patent/WO2005040609A1/de not_active Ceased
- 2004-09-28 US US10/595,451 patent/US7647918B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005040609A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1676031B1 (de) | 2015-07-29 |
| US7647918B2 (en) | 2010-01-19 |
| US20070277785A1 (en) | 2007-12-06 |
| CN100422550C (zh) | 2008-10-01 |
| DE10349310B3 (de) | 2005-05-19 |
| CN1871434A (zh) | 2006-11-29 |
| WO2005040609A1 (de) | 2005-05-06 |
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