EP1519033A2 - Pompe à piston, notamment pompe haute pression à piston - Google Patents

Pompe à piston, notamment pompe haute pression à piston Download PDF

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Publication number
EP1519033A2
EP1519033A2 EP04104464A EP04104464A EP1519033A2 EP 1519033 A2 EP1519033 A2 EP 1519033A2 EP 04104464 A EP04104464 A EP 04104464A EP 04104464 A EP04104464 A EP 04104464A EP 1519033 A2 EP1519033 A2 EP 1519033A2
Authority
EP
European Patent Office
Prior art keywords
piston
piston pump
spring plate
supported
spring
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.)
Withdrawn
Application number
EP04104464A
Other languages
German (de)
English (en)
Other versions
EP1519033A3 (fr
Inventor
Heinz Siegel
Thomas Jakisch
Siamend Flo
Andreas Utler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1519033A2 publication Critical patent/EP1519033A2/fr
Publication of EP1519033A3 publication Critical patent/EP1519033A3/fr
Withdrawn legal-status Critical Current

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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
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • 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
    • F02M63/02—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
    • 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

Definitions

  • the invention initially relates to a piston pump, in particular high-pressure fuel pump, with a housing and with a in a guide portion of the housing guided piston, with an end portion in one Workspace protrudes, with a piston spring a spring plate is supported, and wherein the spring plate supported in the axial direction on the piston.
  • a piston pump of the type mentioned is from the EP 1 162 365 Al known. This shows a high pressure fuel pump an internal combustion engine, which as Radial piston pump is executed.
  • a piston is in one Cylinder sleeve slidably guided and protrudes with a End area in a work space. That from the workroom opposite end of the piston carries a spring plate on which a piston spring is supported, the other end itself in turn supported on the housing of the piston pump.
  • the spring plate At this Piston pump is the spring plate in a bucket tappet guided.
  • the remote from the working space end of the piston is in installation position of a cam of a drive shaft acted upon, whereby the piston during a rotation of the Drive shaft is placed in a reciprocating motion.
  • the present invention has the object, a piston pump of the type mentioned in such a way that they as completely and simply pre-assembled as possible Nevertheless, it can be produced inexpensively.
  • This object is in a piston pump the above mentioned type solved in that the spring plate in axial direction supported on a support disc, and that the support disk in an annular groove in the lateral surface of the Piston engages.
  • the inventive piston pump is easy to produce and completely pre-assembled. Because in pre-assembled State of the piston is held captive in the housing, even if the piston pump is not connected to one Drive range of the piston pump is coupled, simplifies the final assembly of the piston pump according to the invention Significantly and the error rate in the final assembly is strong reduced. In addition, the radial guidance of the piston spring and the spring plate guaranteed without compromise.
  • the spring plate in the radial direction supported on the piston wherein it is particularly advantageous when the spring plate over a center hole in radial direction on the piston is supported.
  • the spring plate in this way can without additional effort the radial fixation of Federtellers be guaranteed relative to the piston.
  • This also ensures that the power of Piston spring is always coaxially introduced into the piston, which has a positive effect on the service life of pistons and Cylinder affects.
  • the spring plate can also be in radial Direction supported on the support disk, and it is particularly is advantageous if the support disc a collar has and the support disk with the collar, especially with a rounded collar, the spring plate supported radially on an inner diameter. Also by it a coaxial initiation of the spring force is ensured.
  • At least one end of the Piston has a conical insertion section.
  • This introduction section can, for example, a Piston seal pushed onto the piston or the piston be introduced into the piston seal without the Piston seal is damaged.
  • piston pump according to the invention is characterized that faces away from the support plate end of the Piston spring is supported on an adapter part of the housing.
  • an adapter part which for example Plastic can be made, otherwise same piston pump in different installation situations be used.
  • the adapter part forms, so to speak, the "Interface" to the individual installation requirements, for example, to different drive ranges.
  • an internal combustion engine carries the total Reference numeral 10. It includes a fuel system 12.
  • the fuel system 12 consists inter alia of a Fuel tank 14, from which an electrically driven Pre-feed pump 16 the fuel to a high-pressure piston pump 18 promotes. This is to a cylinder head 20th the internal combustion engine 10 grown.
  • the high pressure piston pump 18 is not shown in detail in Figure 1 Way of a camshaft (not shown) driven, which in turn with the camshaft (also not shown) of the internal combustion engine 10 is coupled.
  • the high-pressure piston pump 18 compresses the supplied to her Fuel and pump it into a fuel rail 22, where the fuel is under very high pressure is stored.
  • a fuel rail 22 To the fuel rail 22 are several fuel injectors 24 are connected, the combustion chambers directly associated with the fuel Inject 26.
  • FIG. 2 shows:
  • the high-pressure piston pump 18 comprises a housing 28, which is a fuel guide member 30 and a Cylinder sleeve 32 includes.
  • a housing 28 which is a fuel guide member 30 and a Cylinder sleeve 32 includes.
  • On the fuel guide part 30 are an inlet port 34, an outlet 36, and a pressure damper 38 attached.
  • the cylinder liner 32 In the cylinder liner 32 is in a guide bore 39, a piston 40 slidably guided, It thus forms a guide section for the piston 40.
  • the cylinder liner 32 is in a stepped blind bore 42 used in the fuel guide member 30 and on Fuel guide member 30 by means of a retaining ring 44th established.
  • an adapter part 46 made of plastic used in a region of the blind bore 42 is coaxial with Cylinder sleeve 32 an adapter part 46 made of plastic used. This engages in an opening 48 in Cylinder head 20 of the internal combustion engine 10 a.
  • the Adapter part 46 is thus the connection of the Fuel guide member 30 to the cylinder head 20 of the Internal combustion engine 10 produced.
  • the seal between the adapter part 46 and the fuel guide part 30 done by an O-ring 50, those between the Adapter part 46 and the cylinder head 20 via an O-ring 52.
  • the high pressure piston pump 18 is on the cylinder head 20th via a flange ring 54 and corresponding screws (without Reference numeral) attached.
  • the fuel guide member 30 and the adapter part 46 is formed so that in the installation position of the high-pressure piston pump shown in Figure 2 18 between the fuel guide member 30 and the cylinder head 20 of the engine 10 still a there is little gap. This is in the present embodiment 0.1 mm. This will ensures that the power flow in the installation position on the Adapter part 46 extends to the cylinder head 20.
  • An upper end portion 56 of the piston 40 protrudes into a Working space 58 into which fluidly with the Inlet port 34 and the outlet port 36 communicate can.
  • an annular groove 60 present, in which a snap ring 62 is inserted.
  • an annular groove 66 present, but which clearly is deeper than the annular groove 60.
  • this annular groove 66 is of the side of a support plate 68 is inserted. This is the support disk 68 on one side with a slot 70th Mistake. Its width corresponds approximately to the diameter the annular groove 66. This relationship is from the bottom Part of the figure 2 section through the piston 40th to recognize well at the height of the support plate 68.
  • a spring plate 69 On the support plate 68 is a spring plate 69. Of the Spring plate 69 is a pot-shaped component with a closed edge 71; that is contrary to the support disk 68 no slot. Between the edge 71 of the spring plate 68 and the adapter part 46 is a Piston spring 72 braced. Due to the fact that the spring plate 69 cup-shaped and he has no slot he is very resilient, especially in the axial direction, so that he the 72 initiated by the piston spring forces always safe and reliable.
  • the spring plate 69 has a central bore 75, whose diameter D B is slightly larger than the diameter of the piston 40 above the annular groove 66. As a result, the spring plate 69 is centered in the installed state by the piston 40.
  • An inner diameter D i of the cup-shaped spring plate 69 is dimensioned such that it centers the support plate 68. This ensures that the support disk 68 can not migrate out of the annular groove 66 in the assembled state. In addition, the inner diameter D i causes the support plate 68 can not expand radially even under the greatest load, which would lead to a loss of functionality of the high-pressure piston pump 18. Finally, it is always ensured by the construction according to the invention that the spring force of the piston spring 72 always acts centrally on the piston 40.
  • the high-pressure piston pump 18 is as follows pre-assembled:
  • the snap ring 62 in the annular groove 60 of Piston 40 inserted.
  • the piston 40 with the End portion 64 is inserted into the cylinder liner 32 in advance.
  • 64 insertion chamfers (bevels) are provided at the end region.
  • 73a and 73b turned on.
  • the cylinder liner 32 in the blind bore 42 is pressed in the fuel guide part 30 and by means of the retaining ring 44 on the fuel guide part 30th welded.
  • the adapter part 46 is used and the piston spring 72 on the adapter part 46 and coaxial with the piston 40 arranged.
  • the bias of the piston spring 72 is not effected by illustrated sideshifter.
  • the piston spring 72 was released, so that these on the spring plate 69 rests, the side sliders can be easily removed, because the spring force of the piston spring 72 is no longer on it acts.
  • the piston spring 72 now pushes the piston 40 from the Working space 58 out until the snap ring 62 at the Cylinder sleeve 32 comes into contact.
  • the piston 40 are not moved out of the working space 58, since the Outer diameter of the snap ring 62 is greater than that Inner diameter of the guide bore 39 of the cylinder liner 32.
  • the snap ring 62 thus forms a backup section in the sense of a "captive" for the piston 40th
  • the force of the piston spring 72 is also the adapter part 46 so reliable against the Fuel guide member 30 pressed that the O-ring 50th can not slip.
  • the high pressure fuel pump 18 operates as follows:
  • the support disk 68 has at its outer diameter a rounded collar 80, which is used to center the Spring plate 69 is used. This means that the Center bore 75 of the spring plate 69 not for centering is needed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Details Of Reciprocating Pumps (AREA)
EP04104464A 2003-09-25 2004-09-15 Pompe à piston, notamment pompe haute pression à piston Withdrawn EP1519033A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003144459 DE10344459B4 (de) 2003-09-25 2003-09-25 Kolbenpumpe, insbesondere Hochdruck-Kolbenpumpe
DE10344459 2003-09-25

Publications (2)

Publication Number Publication Date
EP1519033A2 true EP1519033A2 (fr) 2005-03-30
EP1519033A3 EP1519033A3 (fr) 2006-05-17

Family

ID=34177938

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04104464A Withdrawn EP1519033A3 (fr) 2003-09-25 2004-09-15 Pompe à piston, notamment pompe haute pression à piston

Country Status (2)

Country Link
EP (1) EP1519033A3 (fr)
DE (1) DE10344459B4 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010050569A1 (fr) 2008-10-30 2010-05-06 日立オートモティブシステムズ株式会社 Pompe pour délivrer un carburant haute pression
DE102009027576A1 (de) 2009-07-09 2011-01-13 Robert Bosch Gmbh Kraftstoffhochdruckpumpe
DE102009027689A1 (de) 2009-07-14 2011-01-20 Robert Bosch Gmbh Kraftstoffhochdruckpumpe
DE102009027937A1 (de) 2009-07-22 2011-01-27 Robert Bosch Gmbh Kraftstoffhochdruckpumpe
WO2012019881A1 (fr) * 2010-08-10 2012-02-16 Robert Bosch Gmbh Pompe haute pression à niveau sonore optimisé
ITMI20110976A1 (it) * 2011-05-30 2012-12-01 Bosch Gmbh Robert Gruppo di pompaggio per alimentare combustibile, preferibilmente gasolio, ad un motore a combustione interna
ITMI20120270A1 (it) * 2012-02-23 2013-08-24 Bosch Gmbh Robert Pompa di alta pressione per alimentare combustibile ad un motore a combustione interna
WO2014170105A1 (fr) * 2013-04-17 2014-10-23 Robert Bosch Gmbh Pompe à piston, notamment pompe à haute pression pour carburant
CN106014736A (zh) * 2011-11-30 2016-10-12 日立汽车系统株式会社 高压燃料供给泵
EP3153702A1 (fr) * 2015-10-05 2017-04-12 Delphi International Operations Luxembourg S.à r.l. Module de pompage
KR20170040760A (ko) * 2015-10-05 2017-04-13 델피 인터내셔널 오퍼레이션즈 룩셈부르크 에스.에이 알.엘. 펌핑 조립체

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010038468A1 (de) * 2010-07-27 2012-02-02 Robert Bosch Gmbh Hochdruckpumpe
DE102013200548A1 (de) * 2013-01-16 2014-07-17 Continental Teves Ag & Co. Ohg Kolbenpumpe
DE102013219712B4 (de) * 2013-09-30 2020-04-23 Continental Automotive Gmbh Dämpfer mit Stützring für eine Dichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1453626B2 (de) * 1964-11-03 1974-12-12 G.L. Rexroth Gmbh, 8770 Lohr Ventil mit einem plattenförmigen Ventilglied
DE3201011A1 (de) * 1982-01-15 1983-07-28 Robert Bosch Gmbh, 7000 Stuttgart Brennstoff-einspritzpumpe
EP1471248B1 (fr) * 1999-02-09 2006-10-11 Hitachi, Ltd. Pompe d'alimentation en combustible à haute pression pour moteur a combustion interne
EP1415092A1 (fr) * 2001-08-08 2004-05-06 CRT Common Rail Technologies AG Pompe d'alimentation haute pression
DE10147981A1 (de) * 2001-09-28 2003-04-24 Siemens Ag Verbindungselement zur Verbindung eines Kolbens mit einem Rückstellelement
US6607149B2 (en) * 2001-12-28 2003-08-19 Robert Bosch Fuel Systems Corporation Follower assembly with retainer clip for unit injector
DE10200792A1 (de) * 2002-01-11 2003-07-31 Bosch Gmbh Robert Kraftstoffpumpe für eine Brennkraftmaschine
DE10322597A1 (de) * 2003-05-20 2004-12-09 Robert Bosch Gmbh Kolbenpumpe, insbesondere Hochdruck-Kraftstoffpumpe, sowie Verfahren zu deren Herstellung

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9410519B2 (en) 2008-10-30 2016-08-09 Hitachi Automotive Systems, Ltd. High-pressure fuel pump assembly mechanism
CN102197212A (zh) * 2008-10-30 2011-09-21 日立汽车系统株式会社 高压燃料供给泵
US20110253109A1 (en) * 2008-10-30 2011-10-20 Hitachi Automotive Systems Ltd High-Pressure Fuel Pump
EP2341237A4 (fr) * 2008-10-30 2017-05-17 Hitachi Automotive Systems, Ltd. Pompe pour délivrer un carburant haute pression
JP2010106740A (ja) * 2008-10-30 2010-05-13 Hitachi Automotive Systems Ltd 高圧燃料供給ポンプ
WO2010050569A1 (fr) 2008-10-30 2010-05-06 日立オートモティブシステムズ株式会社 Pompe pour délivrer un carburant haute pression
DE102009027576A1 (de) 2009-07-09 2011-01-13 Robert Bosch Gmbh Kraftstoffhochdruckpumpe
DE102009027689A1 (de) 2009-07-14 2011-01-20 Robert Bosch Gmbh Kraftstoffhochdruckpumpe
DE102009027937A1 (de) 2009-07-22 2011-01-27 Robert Bosch Gmbh Kraftstoffhochdruckpumpe
WO2012019881A1 (fr) * 2010-08-10 2012-02-16 Robert Bosch Gmbh Pompe haute pression à niveau sonore optimisé
WO2012163576A1 (fr) * 2011-05-30 2012-12-06 Robert Bosch Gmbh Pompe d'alimentation en carburant, de préférence du carburant diesel, à un moteur à combustion interne
ITMI20110976A1 (it) * 2011-05-30 2012-12-01 Bosch Gmbh Robert Gruppo di pompaggio per alimentare combustibile, preferibilmente gasolio, ad un motore a combustione interna
CN106014736A (zh) * 2011-11-30 2016-10-12 日立汽车系统株式会社 高压燃料供给泵
CN106014736B (zh) * 2011-11-30 2019-04-09 日立汽车系统株式会社 高压燃料供给泵
WO2013124097A1 (fr) * 2012-02-23 2013-08-29 Robert Bosch Gmbh Pompe à haute pression pour fournir du carburant à un moteur à combustion interne
ITMI20120270A1 (it) * 2012-02-23 2013-08-24 Bosch Gmbh Robert Pompa di alta pressione per alimentare combustibile ad un motore a combustione interna
CN105121831A (zh) * 2013-04-17 2015-12-02 罗伯特·博世有限公司 活塞泵、特别是燃料高压泵
JP2016515681A (ja) * 2013-04-17 2016-05-30 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングＲｏｂｅｒｔ Ｂｏｓｃｈ Ｇｍｂｈ ピストンポンプ、特に高圧燃料ポンプ
WO2014170105A1 (fr) * 2013-04-17 2014-10-23 Robert Bosch Gmbh Pompe à piston, notamment pompe à haute pression pour carburant
EP3153702A1 (fr) * 2015-10-05 2017-04-12 Delphi International Operations Luxembourg S.à r.l. Module de pompage
KR20170040758A (ko) * 2015-10-05 2017-04-13 델피 인터내셔널 오퍼레이션즈 룩셈부르크 에스.에이 알.엘. 펌핑 조립체
KR20170040760A (ko) * 2015-10-05 2017-04-13 델피 인터내셔널 오퍼레이션즈 룩셈부르크 에스.에이 알.엘. 펌핑 조립체

Also Published As

Publication number Publication date
EP1519033A3 (fr) 2006-05-17
DE10344459A1 (de) 2005-04-14
DE10344459B4 (de) 2012-06-14

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