EP1060334A1 - Radial piston pump for fuel high pressure generation - Google Patents
Radial piston pump for fuel high pressure generationInfo
- Publication number
- EP1060334A1 EP1060334A1 EP99907315A EP99907315A EP1060334A1 EP 1060334 A1 EP1060334 A1 EP 1060334A1 EP 99907315 A EP99907315 A EP 99907315A EP 99907315 A EP99907315 A EP 99907315A EP 1060334 A1 EP1060334 A1 EP 1060334A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plate
- piston
- piston pump
- radial piston
- pump according
- 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
- 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
- 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
- F04B1/0426—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
- 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
- F02M2200/02—Fuel-injection apparatus having means for reducing wear
Definitions
- the invention relates to a radial piston pump for high-pressure fuel generation in fuel injection systems of internal combustion engines, in particular in a common rail injection system, with a drive shaft mounted in a pump housing, which is eccentrically formed or has cam-like elevations in the circumferential direction, and preferably several radially in one with respect to the drive shaft Piston arranged in each cylinder space, at the ends facing the drive shaft, a plate is attached, which has a blind hole in the middle, in which the end of the associated piston is received, the piston having a groove on its circumference, in which a snap ring is attached to attach a plate holder to the piston that holds the plate to the piston.
- the cylinder countersink serves to receive the snap ring, more precisely, to receive the part of the snap ring which protrudes from the groove.
- the dimensioning of the cylinder lowering according to the invention ensures that the snap ring is tied up in its installation space. This means that larger forces can be transmitted than with conventional radial piston pumps.
- a further special embodiment of the invention is characterized in that the plate has a groove on its circumference, into which a retaining ring is received, which rests on the plate holder.
- the elastic locking ring provides a non-positive and therefore play-free connection between the plate holder and the plate. This ensures that the piston foot remains in contact with the plate during operation.
- the locking ring gives way, so that the plate holder can be rigid.
- Another special embodiment of the invention is characterized in that snap segments are formed on the plate holder, which abut the periphery of the plate.
- the snap segments have the advantage over the claws known from the prior art that their size makes them more stable.
- the snap segments of a plate holder do not get caught so easily with the snap segments of other plate holders during storage. This simplifies the assembly of the plate holder.
- Another special embodiment of the invention is characterized in that a polygonal or cylindrical ring is arranged between the drive shaft and the plate.
- the ring is used to transmit the forces from the eccentrically designed drive shaft to the plate.
- the ring is advantageously slidably mounted on the drive shaft.
- the ring can either be cylindrical or be flattened.
- three snap segments 22 extend parallel to the piston 1.
- the ends 23 of the snap segments 22 are first bent inwards and then slightly outwards.
- the inwardly bent piece of the snap segments 22 forms an annular space in the plate holder 4 which serves to receive a collar 24 which is formed on the plate 3.
- the outwardly bent end pieces 23 of the snap segments 22 facilitate the insertion of the plate 3 into the plate holder 4.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19809315A DE19809315A1 (en) | 1998-03-05 | 1998-03-05 | Radial piston pump for high-pressure fuel generation |
DE19809315 | 1998-03-05 | ||
PCT/DE1999/000345 WO1999045271A1 (en) | 1998-03-05 | 1999-02-09 | Radial piston pump for fuel high pressure generation |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1060334A1 true EP1060334A1 (en) | 2000-12-20 |
EP1060334B1 EP1060334B1 (en) | 2004-09-29 |
Family
ID=7859738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99907315A Expired - Lifetime EP1060334B1 (en) | 1998-03-05 | 1999-02-09 | Radial piston pump for fuel high pressure generation |
Country Status (5)
Country | Link |
---|---|
US (1) | US6412474B1 (en) |
EP (1) | EP1060334B1 (en) |
JP (1) | JP2002506163A (en) |
DE (2) | DE19809315A1 (en) |
WO (1) | WO1999045271A1 (en) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10039210A1 (en) * | 2000-08-10 | 2002-02-28 | Siemens Ag | Radial piston pump has two-part spring carrier in form of pivoted connecting element between piston and return spring |
DE10150351A1 (en) * | 2001-10-15 | 2003-05-08 | Bosch Gmbh Robert | Pump element and piston pump for high-pressure fuel generation |
DE10157375A1 (en) * | 2001-11-22 | 2003-06-05 | Daimler Chrysler Ag | high pressure pump |
DE10200792A1 (en) | 2002-01-11 | 2003-07-31 | Bosch Gmbh Robert | Fuel pump for an internal combustion engine |
DE10203600B4 (en) * | 2002-01-30 | 2004-12-23 | Siemens Ag | Leakage connection for attaching a leakage line to a fuel injector |
DE10326879A1 (en) * | 2003-06-14 | 2004-12-30 | Daimlerchrysler Ag | Radial piston pump for fuel high pressure generation in fuel injection systems of internal combustion engines |
US7726000B2 (en) * | 2005-05-17 | 2010-06-01 | Dana Automotive Systems Group, Llc | Method of securing first and second splined members together |
US20060275160A1 (en) * | 2005-05-17 | 2006-12-07 | Leu Shawn A | Pump improvements |
FR2899285B1 (en) * | 2006-03-31 | 2008-06-27 | Poclain Hydraulics Ind Soc Par | PISTON FOR A RADIAL PISTON HYDRAULIC ENGINE AND METHOD OF MANUFACTURING THE SAME |
DE102006032244A1 (en) * | 2006-07-12 | 2008-01-17 | Siemens Ag | Radial piston pump for high pressure fuel injection system, has high pressure piston formed as two-piece with cylindrical piston part and ring that are connected with each other in force-fitting and/or form-fitting manner |
US8628305B2 (en) * | 2006-09-05 | 2014-01-14 | Gardner Denver Thomas, Inc. | Fluid intake and exhaust fittings for a compressor or pump |
HUE026768T2 (en) * | 2007-10-12 | 2016-07-28 | Delphi Int Operations Luxembourg Sarl | Improvements relating to fuel pumps |
DE102008000824A1 (en) * | 2008-03-26 | 2009-10-01 | Robert Bosch Gmbh | Pump, in particular high-pressure fuel pump |
IT1401914B1 (en) * | 2010-09-01 | 2013-08-28 | Bosch Gmbh Robert | PUMPING UNIT FOR FUEL SUPPLEMENT, PREFERABLY GASOIL, TO AN INTERNAL COMBUSTION ENGINE AND RELATIVE ASSEMBLY METHOD |
JP5352646B2 (en) * | 2011-01-27 | 2013-11-27 | 株式会社日本自動車部品総合研究所 | High pressure pump |
US20130084198A1 (en) * | 2011-10-04 | 2013-04-04 | Woodward, Inc. | Pump with centralized spring forces |
JP6339492B2 (en) * | 2014-12-25 | 2018-06-06 | 株式会社Soken | High pressure fuel pump |
DE102019106531A1 (en) * | 2019-03-14 | 2020-09-17 | Baier & Köppel GmbH & Co. KG | Lubricant pump with automatically coupling pump unit and method for coupling a pump unit to a lubricant pump |
DE102020104313B3 (en) * | 2020-02-19 | 2021-01-28 | Schaeffler Technologies AG & Co. KG | Plunger for acting on a pump piston of a high-pressure fuel pump |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3857642A (en) * | 1973-02-26 | 1974-12-31 | Ingersoll Rand Co | Flexible or universal coupling means |
DE4216877C2 (en) * | 1991-08-12 | 1996-08-29 | Elasis Sistema Ricerca Fiat | Radial piston pump |
DE4213798C2 (en) * | 1992-04-27 | 2002-10-24 | Bosch Gmbh Robert | Radial piston pump, in particular fuel pump for internal combustion engines |
US5364234A (en) * | 1992-05-20 | 1994-11-15 | Karl Eickmann | High pressure devices |
US5382140A (en) * | 1993-02-11 | 1995-01-17 | Elasis Sistema Ricerca Fiat Nel Mezzogiorno | Radial-piston pump |
AU6828294A (en) * | 1993-05-06 | 1994-12-12 | Cummins Engine Company Inc. | Distributor for a high pressure fuel system |
DE19705205A1 (en) * | 1997-02-12 | 1998-08-13 | Bosch Gmbh Robert | Piston pump, esp. high pressure fuel injection pump for IC engine |
DE19804275A1 (en) * | 1998-02-04 | 1999-08-12 | Bosch Gmbh Robert | Radial piston pump for high-pressure fuel supply |
JP4284429B2 (en) * | 1998-02-27 | 2009-06-24 | スタナダイン・オートモティブ・コーポレーション | Gasoline common rail supply pump |
US6311674B1 (en) * | 1998-04-15 | 2001-11-06 | Denso Corporation | Fuel injection system for internal combustion engine |
-
1998
- 1998-03-05 DE DE19809315A patent/DE19809315A1/en not_active Withdrawn
-
1999
- 1999-02-09 JP JP2000534775A patent/JP2002506163A/en not_active Withdrawn
- 1999-02-09 US US09/623,429 patent/US6412474B1/en not_active Expired - Fee Related
- 1999-02-09 DE DE59910657T patent/DE59910657D1/en not_active Expired - Lifetime
- 1999-02-09 EP EP99907315A patent/EP1060334B1/en not_active Expired - Lifetime
- 1999-02-09 WO PCT/DE1999/000345 patent/WO1999045271A1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9945271A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE19809315A1 (en) | 1999-09-09 |
DE59910657D1 (en) | 2004-11-04 |
EP1060334B1 (en) | 2004-09-29 |
JP2002506163A (en) | 2002-02-26 |
WO1999045271A1 (en) | 1999-09-10 |
US6412474B1 (en) | 2002-07-02 |
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