EP1049868A1 - Pumpenanordnung zur kraftstoffhochdruckversorgung - Google Patents
Pumpenanordnung zur kraftstoffhochdruckversorgungInfo
- Publication number
- EP1049868A1 EP1049868A1 EP99906058A EP99906058A EP1049868A1 EP 1049868 A1 EP1049868 A1 EP 1049868A1 EP 99906058 A EP99906058 A EP 99906058A EP 99906058 A EP99906058 A EP 99906058A EP 1049868 A1 EP1049868 A1 EP 1049868A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- high pressure
- pressure
- pump
- fuel
- connection bore
- 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
- 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
- F02M59/08—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 two or more pumping elements with conjoint outlet or several pumping elements feeding one engine cylinder
-
- 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
- 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
- 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
Definitions
- the problem is with a pump arrangement for supplying high-pressure fuel
- Fuel injection systems of internal combustion engines in particular in a common rail injection system, with a pump housing which comprises a plurality of pump elements in which fuel is pressurized with high pressure, the high pressure fuel being conveyed via a high pressure channel system from the individual pump elements to a common high pressure connection bore , solved in that the high pressure duct system several
- High pressure channels includes, which are in communication with the pump elements and are arranged in a different plane than the common high pressure connection bore in which the high pressure channels meet.
- the arrangement of the high pressure channels in one level allows for each
- High pressure valve the same parts are used. Due to the arrangement of the common high-pressure connection bore in a different plane than the high-pressure ducts, the high-pressure ducts can hit the high-pressure connection bore eccentrically. This means that the center lines of the high pressure channels do not intersect with the center line of the high pressure connection bore. This reduces the stress peaks in the intersections of the holes. This provides the advantage that the pump housing is permanently fatigue-proof even at pressures of up to 2000 bar. In addition, the pump arrangement according to the invention has the advantage that it can be manufactured inexpensively.
- a special embodiment of the invention is characterized in that at least one of the high-pressure channels penetrates the high-pressure connection bore on the outside essentially tangentially.
- the level with the high-pressure connection is shifted relative to the level with the high-pressure ducts to such an extent that the high-pressure duct off-center, tangentially, the high-pressure connection bore penetrates. This avoids dead water areas at the interfaces. In addition to more favorable flow conditions, this provides the advantage that optimal cleaning of the high-pressure duct system is ensured in production.
- the terms "tangential” and "tangent” are to be understood in the sense of the present invention as an option that does not necessarily have to be fulfilled. Manufacturing tolerances (angle, position, straightness, diameter) must be taken into account in the design. Since the holes must not cut the lateral surface of the cross holes for reasons of strength, design must be kept for the maximum tolerance position. A reduction of the stresses is already achieved with an off-center penetration of the bores, which does not necessarily have to be tangential.
- a further special embodiment of the invention is characterized in that at least one of the high-pressure channels opens into the outlet of the high-pressure connection bore, which is spherical. Due to the spherical design of the high-pressure connection bore, drilling intersections with larger angles can be realized than with bores that are produced with conventional drills. In addition, additional notches in the outlet of the high-pressure connection bore are avoided.
- Another special embodiment of the invention is characterized in that the high-pressure channels penetrate the blind holes off-center. This reduces tensions.
- the present invention generally provides the advantage that large differences in diameter between the high-pressure ducts and the high-pressure connection bore can be implemented in a fluidically favorable manner.
- FIG. 1 shows a section through a pump arrangement according to a first embodiment of the present invention, the section shown running along the line F-F in FIG. 2;
- Figure 2 shows a section along the line E-E in Figure 1;
- FIG. 3 shows an enlarged partial view of a section along the line G-G in FIG. 1 on a scale of 2: 1;
- FIG. 4 shows a section through a pump arrangement according to a second embodiment of the present invention, the section shown running along the line F-F in FIG. 5;
- Figure 5 shows a section along the line E-E in
- FIG. 6 shows an enlarged partial view of a section along the line G-G in FIG. 4 on a scale of 2: 1.
- the pump arrangement according to the invention can be, for example, a radial piston pump.
- Radial piston pumps are used in particular in common rail injection systems Fuel supply used by diesel engines.
- "Common rail” means “common line”, “common rail” or “common distribution rail”.
- the injection nozzles in common rail injection systems are fed from a common line.
- the pump elements of a radial piston pump can be formed by cylinder spaces arranged radially to a drive shaft, in each of which a piston is accommodated so that it can be moved back and forth.
- the pistons are used to apply high pressure to fuel in the cylinder chambers.
- the high-pressure fuel is then fed into the common rail via a high-pressure duct system and a high-pressure connection.
- a high-pressure pump is shown in section in FIG.
- a pump housing part 2 three blind holes 3, 4 and 5 are shown, which are each connected to one of the pump elements via bores (not shown) (see also FIG. 2).
- Two high-pressure ducts 6 and 7 run perpendicular to the blind holes 3, 4 and 5
- High-pressure duct 6 connects the blind holes 3 and 4 with one another and penetrates a high-pressure connection bore 8, the diameter of which is larger than the diameter of the high-pressure ducts.
- the high pressure channels 6 and 7 run in a plane which corresponds to the drawing plane in FIG. 1.
- the high-pressure connection bore 8 extends in one plane parallel to the high-pressure channels 6 and 7. The distance between the parallel planes is chosen such that the High-pressure channel 6 penetrates the high-pressure connection bore 8 essentially tangentially.
- the outer surface of the high-pressure duct 6 on the one hand touches the outer surface of the high-pressure connection bore and, on the other hand, meets the outer surface of the high-pressure connection bore almost perpendicularly.
- the high-pressure duct 7 connects the blind hole 5 with the high-pressure connection bore 8.
- the high-pressure duct 7 opens out of the center and essentially tangentially into the high-pressure connection bore 8, as can be seen from the section shown in FIG. 3.
- the high-pressure channels 6 and 7 also penetrate the blind holes 3, 4 and 5 essentially tangentially and off-center.
- FIGS. 4 to 6 largely corresponds to the embodiment shown in FIGS. 1 to 3.
- the following description mainly deals with the differences between the two embodiments. Parts that occur in both embodiments are given the same reference numerals for the sake of simplicity.
- the high-pressure connection bore 8 has a spherical outlet 11.
- the embodiment shown in FIG. 1 has an outlet
- the angle ⁇ between the high pressure channel 7 and the outlet 10 of the high pressure connection bore 8 is approximately 60 °.
- the Angle a between the high pressure channel 7 and the outlet 11 of the high pressure connection bore 8 is approximately 75 ', which is in relation to the level of the stresses on the
- all high-pressure ducts merge off-center and essentially tangentially into high-pressure bores with a larger diameter.
- the essentially tangential penetration is realized, although the high-pressure ducts are arranged in the same plane.
- High-pressure connection bore (8) is conveyed, characterized in that the high-pressure duct system comprises a plurality of high-pressure ducts (6, 7) which are connected to the pump elements and are arranged in a different plane than the common one
- High-pressure channels (6) penetrate the high-pressure connection bore (8) on the outside essentially tangentially.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19802476 | 1998-01-23 | ||
DE19802476A DE19802476A1 (de) | 1998-01-23 | 1998-01-23 | Pumpenanordnung zur Kraftstoffhochdruckversorgung |
PCT/DE1999/000088 WO1999037910A1 (de) | 1998-01-23 | 1999-01-18 | Pumpenanordnung zur kraftstoffhochdruckversorgung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1049868A1 true EP1049868A1 (de) | 2000-11-08 |
EP1049868B1 EP1049868B1 (de) | 2002-05-08 |
Family
ID=7855432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99906058A Expired - Lifetime EP1049868B1 (de) | 1998-01-23 | 1999-01-18 | Pumpenanordnung zur kraftstoffhochdruckversorgung |
Country Status (5)
Country | Link |
---|---|
US (1) | US6588405B1 (de) |
EP (1) | EP1049868B1 (de) |
JP (1) | JP4372999B2 (de) |
DE (2) | DE19802476A1 (de) |
WO (1) | WO1999037910A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100406722C (zh) * | 2002-10-09 | 2008-07-30 | 罗伯特·博世有限公司 | 高压泵、尤其是用于内燃机的燃料喷射装置的高压泵 |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19851286C2 (de) * | 1998-11-06 | 2001-05-17 | Siemens Ag | Vorrichtung mit Bohrungsverschneidung |
DE10029431A1 (de) * | 2000-06-15 | 2001-12-20 | Siemens Ag | Bohrungsanordnung mit einer aus mindestens zwei Bohrungen gebildeten Verschneidung sowie Verfahren zu deren Herstellung |
DE10029425B4 (de) * | 2000-06-15 | 2004-11-18 | Siemens Ag | Bohrungsanordnung mit einer aus mindestens drei Bohrungen gebildeten Verschneidung sowie Verfahren zu deren Herstellung |
DE10042305A1 (de) * | 2000-08-29 | 2002-03-21 | Siemens Ag | Abdichtungsvorrichtung für einen Übergangsbereich an Hochdruckbauteilen |
DE10046315C2 (de) * | 2000-09-19 | 2002-11-14 | Siemens Ag | Hochdruckpumpe für ein Speichereinspritzsystem sowie Speichereinspritzsystem |
GB2384529B (en) * | 2002-01-25 | 2005-06-01 | Delphi Tech Inc | Fuel pump assembly |
DE10221305A1 (de) | 2002-05-14 | 2003-11-27 | Bosch Gmbh Robert | Radialkolbenpumpe für Kraftstoffeinspritzsystem mit verbesserter Hochdruckfestigkeit |
DE10229396A1 (de) * | 2002-06-29 | 2004-01-22 | Robert Bosch Gmbh | Radialkolbenpumpe zur Kraftstoffhochdruckversorgung bei Einspritzsystemen von Brennkraftmaschinen mit verbessertem Wirkungsgrad |
JP4650629B2 (ja) * | 2004-11-16 | 2011-03-16 | 株式会社アドヴィックス | ラジアルプランジャポンプ |
EP1780415B1 (de) * | 2005-10-25 | 2015-08-05 | Delphi International Operations Luxembourg S.à r.l. | Bauteil für Hochdruckfluidvorrichtungen und Verfahren zu seiner Herstellung |
DE102007052748A1 (de) * | 2007-11-06 | 2009-05-07 | Robert Bosch Gmbh | Radialkolbenpumpe mit einem prismatischem Grundkörper für ein Kraftstoffeinspritzsystem |
DE102008001587A1 (de) * | 2008-05-06 | 2009-11-12 | Robert Bosch Gmbh | Hochdruckkraftstoffpumpe zum Betrieb einer Brennkraftmaschine |
DE102009027827A1 (de) * | 2009-07-20 | 2011-01-27 | Robert Bosch Gmbh | Pumpengehäuse eines Kraftfahrzeug-Hydroaggregats mit mindestens einer Hauptzylinderanschlussöffnung |
UA109683C2 (uk) * | 2010-12-09 | 2015-09-25 | Зміщений клапанний отвір у поршневому насосі | |
CN104204519B (zh) | 2012-02-01 | 2016-08-03 | S.P.M.流量控制股份有限公司 | 具有集成腹板部分的泵流体端 |
DE102016106232B3 (de) * | 2016-04-06 | 2017-08-31 | L'orange Gmbh | Radialkolbenpumpe, insbesondere für Kraftstoff, mit mehreren Speicherbohrungen im Gehäuse der Radialkolbenpumpe |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3119340A (en) * | 1961-09-22 | 1964-01-28 | Thompson Ramo Wooldridge Inc | Variable pump for fuel injection supply |
IT1217254B (it) * | 1987-08-25 | 1990-03-22 | Weber Srl | Pompa in linea per impianti di iniezione del combustibile con iniettori comandati per motori a ciclo diesel |
US5255658A (en) * | 1990-10-12 | 1993-10-26 | Coltec Industries Inc. | System and apparatus to improve atomization of injected fuel |
DE9213982U1 (de) * | 1992-10-16 | 1993-08-12 | Wap Reinigungssysteme Gmbh & Co, 89287 Bellenberg, De | |
JPH08135462A (ja) * | 1994-11-09 | 1996-05-28 | Yamaha Motor Co Ltd | 縦型エンジン |
JPH07167009A (ja) * | 1993-12-14 | 1995-07-04 | Yamaha Motor Co Ltd | エンジンへの燃料供給装置 |
US5463997A (en) * | 1994-10-05 | 1995-11-07 | Cutler Induction Systems, Inc. | Single point fuel injection system |
DE19640480B4 (de) * | 1996-09-30 | 2004-04-22 | Robert Bosch Gmbh | Kraftstoffhochdruckspeicher |
EP0816675B1 (de) * | 1996-07-01 | 2002-04-10 | Mannesmann Rexroth AG | Vorrichtung zur Stabilisierung des Exzenterrings einer Radialkolbenpumpe |
US5956953A (en) * | 1997-02-08 | 1999-09-28 | Folsom; Lawrence R. | Concentric radial piston transmission with flexible cam ring |
US5970956A (en) * | 1997-02-13 | 1999-10-26 | Sturman; Oded E. | Control module for controlling hydraulically actuated intake/exhaust valves and a fuel injector |
FI101999B1 (fi) * | 1997-02-20 | 1998-09-30 | Waertsilae Nsd Oy Ab | Järjestely polttomoottorin ruiskutuspumppua varten |
-
1998
- 1998-01-23 DE DE19802476A patent/DE19802476A1/de not_active Ceased
-
1999
- 1999-01-18 JP JP2000528792A patent/JP4372999B2/ja not_active Expired - Fee Related
- 1999-01-18 WO PCT/DE1999/000088 patent/WO1999037910A1/de active IP Right Grant
- 1999-01-18 EP EP99906058A patent/EP1049868B1/de not_active Expired - Lifetime
- 1999-01-18 DE DE59901391T patent/DE59901391D1/de not_active Expired - Lifetime
- 1999-01-18 US US09/600,917 patent/US6588405B1/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9937910A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100406722C (zh) * | 2002-10-09 | 2008-07-30 | 罗伯特·博世有限公司 | 高压泵、尤其是用于内燃机的燃料喷射装置的高压泵 |
Also Published As
Publication number | Publication date |
---|---|
DE19802476A1 (de) | 1999-07-29 |
JP2002501144A (ja) | 2002-01-15 |
US6588405B1 (en) | 2003-07-08 |
WO1999037910A1 (de) | 1999-07-29 |
JP4372999B2 (ja) | 2009-11-25 |
EP1049868B1 (de) | 2002-05-08 |
DE59901391D1 (de) | 2002-06-13 |
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