EP1697636B1 - Pompe a haute pression, notamment pour un systeme d'injection de carburant de moteur a combustion interne - Google Patents

Pompe a haute pression, notamment pour un systeme d'injection de carburant de moteur a combustion interne Download PDF

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Publication number
EP1697636B1
EP1697636B1 EP04786760A EP04786760A EP1697636B1 EP 1697636 B1 EP1697636 B1 EP 1697636B1 EP 04786760 A EP04786760 A EP 04786760A EP 04786760 A EP04786760 A EP 04786760A EP 1697636 B1 EP1697636 B1 EP 1697636B1
Authority
EP
European Patent Office
Prior art keywords
pump
piston
tappet
support element
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.)
Active
Application number
EP04786760A
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German (de)
English (en)
Other versions
EP1697636A1 (fr
Inventor
Alfons Schoetz
Walter Fuchs
Gerhard Meier
Jochen Aleker
Andreas Dutt
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 EP1697636A1 publication Critical patent/EP1697636A1/fr
Application granted granted Critical
Publication of EP1697636B1 publication Critical patent/EP1697636B1/fr
Active 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
    • F02M59/02—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
    • 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
    • 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
    • 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
    • F04B1/0439—Supporting or guiding means for the pistons

Definitions

  • the invention relates to a high-pressure pump, in particular for a fuel injection device of an internal combustion engine, according to the preamble of claim 1.
  • Such a high-pressure pump for a fuel injection device of an internal combustion engine is characterized by the DE 101 57 076 A known.
  • This high-pressure pump has at least one pump element which has a pump piston which delimits a pump working space and which is driven at least indirectly by a drive shaft against the force of a restoring spring in a lifting movement.
  • the pump piston is supported at least indirectly via a sleeve-shaped plunger on the drive shaft.
  • the return spring engages the pump piston via a spring plate.
  • a support element is used, on which the pump piston is supported to the drive shaft and which is at least indirectly supported on the drive shaft.
  • a high-pressure pump for a fuel injection device of an internal combustion engine in which the restoring spring engages via a spring plate on the pump piston and on the sleeve-shaped plunger.
  • the restoring spring engages via a spring plate on the pump piston and on the sleeve-shaped plunger.
  • very low manufacturing tolerances of the components are required.
  • the US-A-5,752,430 is a high pressure pump for a fuel injector of an internal combustion engine, in which the return spring via a spring plate on the pump piston and on engages sleeve-shaped plunger, which also very small manufacturing tolerances of the components are required to ensure the installation of the spring plate on the pump piston and the plunger.
  • the high-pressure pump according to the invention with the features of claim 1 has the advantage that a support of the return spring on the pump piston and the plunger is ensured regardless of manufacturing tolerances of these components by the elastically deformable spring plate.
  • FIG. 1 shows a fuel injection device of an internal combustion engine with a high-pressure pump in a longitudinal section and Figure 2 a designated in Figure 1 with II section of the high-pressure pump in an enlarged view.
  • FIGS. 1 and 2 show a high-pressure pump for a fuel injection device of an internal combustion engine.
  • the high-pressure pump has a housing 10, which is designed in several parts and in which a drive shaft 12 is arranged.
  • the drive shaft 12 is rotatably supported in the housing 10 via two spaced apart in the direction of the axis of rotation 13 of the drive shaft 12 bearings.
  • the bearings can be arranged in different parts of the housing 10.
  • the drive shaft 12 has an eccentrically formed to its axis of rotation 13 cam 26, wherein the cam 26 may be a multiple cam.
  • the high pressure pump has at least one or more arranged in the housing 10 pump elements 32, each with a pump piston 34 which is driven by the drive shaft 12 via the cam 26 in a lifting movement in at least approximately radial direction to the rotation axis 13 of the drive shaft 12 and along its longitudinal axis 35 ,
  • the pump piston 34 is guided in a cylinder bore 36 in the housing 10 or an insert in the housing 10 and slidably limited with its the drive shaft 12 facing away from the end in the cylinder bore 36 a pump chamber 38.
  • the pump chamber 38 has a running in the housing 10 fuel inlet channel 40 a Connection with a fuel inlet, such as a feed pump. At the mouth of the fuel inlet channel 40 into the pump working chamber 38 an opening into the pump working chamber 38 inlet valve 42 is arranged, which has a spring-loaded valve member 43.
  • the pump working chamber 38 also has a connection extending in the housing 10 fuel drain passage 44 to an outlet with an outlet, for example, with a High-pressure accumulator 110 is connected.
  • an outlet valve 46 which opens out of the pump working chamber 38 is arranged, which likewise has a spring-loaded valve member 47.
  • One or preferably a plurality of injectors 120 arranged on the cylinders of the internal combustion engine are connected to the high-pressure accumulator 110, through which fuel is injected into the cylinders of the internal combustion engine.
  • the pump piston 34 is supported on the cam 26 of the drive shaft 12 via a support element 50 and a cylindrical roller 52 mounted in the latter on its side facing the drive shaft 12.
  • the support member 50 is for example approximately cylindrical and has a recess 54 in which the roller 52 is rotatably mounted.
  • the axis of rotation 53 of the roller 52 extends at least approximately parallel to the axis of rotation 13 of the drive shaft 12.
  • the pump piston 34 has at its the support member 50 facing the end of a diameter greater than the rest of the pump piston 34 enlarged piston 56 and the pump piston 34 is located with the end face of his piston 56 on the support member 50 at.
  • the support member 50 is inserted into a sleeve-shaped plunger 60 which is guided in a bore 62 of the housing 10 of the high-pressure pump in the direction of movement of the pump piston 34, that is, in the direction of its longitudinal axis 35 slidably.
  • the plunger 60 is formed hollow throughout and has an end portion facing the drive shaft 12, in which the support member 50 is received with little play in the plunger 50, to which the drive shaft 12 facing away from an inwardly projecting annular collar 64 connects, the support member 50th on which the drive shaft 12 facing away from overlaps.
  • a spring plate 66 On the pump piston 34, a spring plate 66, which is supported on the piston foot 56, is pushed by its end limiting the pump working space 38. Between the spring plate 66 and the housing 10 of the high pressure pump, a biased return spring 68 is arranged, which is formed for example as a helical compression spring.
  • the spring plate 66 rests with its central region 166 in the direction of the longitudinal axis 35 of the pump piston 34 on the piston foot 56. With its peripheral region 266 of the spring plate 66 is located in the direction of the longitudinal axis 35 of the pump piston 34 in the plunger 60 on the annular collar 64 on the support member 50 opposite side.
  • the spring plate 66 is formed so elastically deformable that its peripheral portion 266 relative to the central region 166 in the direction of the longitudinal axis 35 of the pump piston 34 is movable.
  • the spring plate 66 is shown in its elastically deformed state. In its undeformed initial state, the spring plate 66 may be planar or may already have a deflection according to FIG. 2 in its peripheral region 266.
  • the spring plate 66 may for example consist of sheet metal and preferably has a lower rigidity than the return spring 68.
  • the return spring 68 is also held on the spring plate 66 of the plunger 60 with its annular collar 64 in contact with the support member 50. Due to the elastic deformability of the spring plate 66, its abutment is ensured both on the piston foot 56 and on the annular collar 64 of the plunger 60, even if the contact surfaces for the spring plate 66 on the piston base 56 and the annular collar 64 of the plunger 60 in the direction of the longitudinal axis 35 of the pump piston 34th offset from each other, which will be the case as a result of manufacturing tolerances of the individual components can. By compared to the spring plate 66 greater rigidity of the return spring 68, the elastic deformation of the spring plate 66 is achieved so that it rests securely on both the piston foot 56 and the annular collar 64 of the plunger 60.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Reciprocating Pumps (AREA)

Claims (8)

  1. Pompe à haute pression notamment pour une installation d'injection de carburant d'un moteur à combustion interne comprenant au moins un élément de pompe (32) ayant un piston de pompe (34) délimitant une chambre de travail de pompe (38) et qui est entraîné suivant un mouvement de translation au moins indirectement par un arbre d'entraînement (22), contre la force développée par un ressort de rappel (68),
    le piston de pompe (34) s'appuyant au moins indirectement contre l'arbre d'entraînement (12) par l'intermédiaire d'un poussoir (60) en forme de manchon, le ressort de rappel (68) s'appuyant au moins contre le piston de pompe (34),
    un élément d'appui (50) est placé dans le poussoir (60) contre lequel s'appuie le piston de pompe (34) par rapport à l'arbre d'entraînement (12) et qui vient au moins indirectement contre l'arbre d'entraînement (12),
    le ressort de rappel (68) étant relié au piston de pompe (14) par au moins une coupelle à ressort (66),
    caractérisée en ce que
    le ressort de rappel (68) agit par la coupelle de ressort (66) sur le piston de pompe (34) et le poussoir (60) et
    la coupelle à ressort (66) est déformable élastiquement dans la direction de mouvement du piston de pompe (34) de façon que cette déformation élastique compense les déviations de position par rapport aux surfaces d'appui (56 ; 64) contre le piston de pompe (34) et contre le poussoir (60).
  2. Pompe à haute pression selon la revendication 1,
    caractérisée en ce que
    le ressort de rappel (68) tient le poussoir (60) en appui contre l'élément d'appui (50).
  3. Pompe à haute pression selon la revendication 2,
    caractérisée en ce que
    le poussoir (60) a un appui (64) en saillie vers l'intérieur pour l'élément d'appui (50) par lequel le poussoir (60) de l'élément d'appui (50) vient en appui sur l'arbre d'entraînement (12).
  4. Pompe à haute pression selon l'une des revendications 1 à 3,
    caractérisée en ce que
    la coupelle à ressort (66) agit par sa zone centrale (166) contre le piston de pompe (34) et par sa zone périphérique (266) contre le poussoir (60).
  5. Pompe à haute pression selon la revendication 4,
    caractérisée en ce que
    le piston de pompe (34) présente à son extrémité tournée vers l'élément d'appui (50), un pied de piston (56) de diamètre agrandi par rapport à la partie restante, et la coupelle à ressort (66) agit sur ce pied de piston (56).
  6. Pompe à haute pression selon l'une des revendications précédentes,
    caractérisée en ce que
    la coupelle à ressort (66) a une rigidité moindre que le ressort de rappel (68).
  7. Pompe à haute pression selon l'une des revendications précédentes,
    caractérisée en ce que
    le côté de l'élément d'appui (50), tourné vers l'arbre d'entraînement (12) a un galet (52) monté à rotation et roulant sur l'arbre d'entraînement (12).
  8. Pompe à haute pression selon la revendication 7,
    caractérisée en ce que
    l'élément d'appui (50) est muni d'une couche de revêtement anti-usure au moins au niveau du palier (54) du galet (52).
EP04786760A 2003-11-25 2004-09-14 Pompe a haute pression, notamment pour un systeme d'injection de carburant de moteur a combustion interne Active EP1697636B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10355027A DE10355027A1 (de) 2003-11-25 2003-11-25 Hochdruckpumpe, insbesondere für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine
PCT/DE2004/002039 WO2005052367A1 (fr) 2003-11-25 2004-09-14 Pompe a haute pression, notamment pour un systeme d'injection de carburant de moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1697636A1 EP1697636A1 (fr) 2006-09-06
EP1697636B1 true EP1697636B1 (fr) 2007-11-14

Family

ID=34609266

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04786760A Active EP1697636B1 (fr) 2003-11-25 2004-09-14 Pompe a haute pression, notamment pour un systeme d'injection de carburant de moteur a combustion interne

Country Status (6)

Country Link
US (1) US7308849B2 (fr)
EP (1) EP1697636B1 (fr)
JP (1) JP4243630B2 (fr)
CN (1) CN100422551C (fr)
DE (2) DE10355027A1 (fr)
WO (1) WO2005052367A1 (fr)

Families Citing this family (31)

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GB0519680D0 (en) * 2005-09-27 2005-11-02 Delphi Tech Inc Fuel pump assembly
DE102008000710A1 (de) * 2008-03-17 2009-09-24 Robert Bosch Gmbh Hochdruckpumpe
DE102008017823B4 (de) 2008-04-08 2016-09-29 Continental Automotive Gmbh Hochdruckpumpe mit einem Pumpenkolben, einem Stößel und einem Rollenschuh bestehend aus wenigstens zwei plattenförmigen Rollenschuhsegmenten
DE102009028392B4 (de) 2009-08-10 2018-05-24 Robert Bosch Gmbh Hochdruckpumpe
DE102009028394A1 (de) * 2009-08-10 2011-02-17 Robert Bosch Gmbh Hochdruckpumpe
DE102010030498A1 (de) * 2010-06-24 2011-12-29 Robert Bosch Gmbh Pumpe, insbesondere Kraftstoffhochdruckpumpe
DE102010031185A1 (de) 2010-07-09 2012-01-12 Continental Automotive Gmbh Hochdruckpumpe
DE102010041002A1 (de) 2010-09-20 2012-03-22 Robert Bosch Gmbh Hochdruckpumpe
DE102010041402A1 (de) 2010-09-27 2012-03-29 Robert Bosch Gmbh Hochdruckpumpe
DE102011003396A1 (de) 2011-01-31 2012-08-02 Continental Automotive Gmbh Pumpeneinheit für eine Hochdruckpumpe
DE102011017571A1 (de) 2011-04-27 2012-10-31 Robert Bosch Gmbh Federteller für eine Stößelbaugruppe einer Hochdruckpumpe sowie Hochdruckpumpe
DE102011017573A1 (de) 2011-04-27 2012-10-31 Robert Bosch Gmbh Federteller für eine Stößelbaugruppe einer Hochdruckpumpe sowie Hochdruckpumpe
DE102011076255A1 (de) 2011-05-23 2012-11-29 Robert Bosch Gmbh Stößelbaugruppe sowie Kraftstoffhochdruckpumpe mit Stößelbaugruppe
DE102012201302A1 (de) * 2012-01-31 2013-08-01 Robert Bosch Gmbh Hochdruckpumpe
DE102012202205A1 (de) 2012-02-14 2013-08-14 Robert Bosch Gmbh Kraftstoffhochdruckpumpe
EP2660459B1 (fr) * 2012-05-03 2016-04-06 Delphi International Operations Luxembourg S.à r.l. Réduction de charge
DE202012004455U1 (de) 2012-05-03 2012-05-29 Robert Bosch Gmbh Komponente einer Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
KR101371897B1 (ko) * 2012-09-05 2014-03-07 현대자동차주식회사 윤활성능이 개선된 고압연료펌프
KR20140037707A (ko) * 2012-09-19 2014-03-27 현대자동차주식회사 고압연료펌프
DE102013211755A1 (de) * 2013-06-21 2014-12-24 Robert Bosch Gmbh Hochdruckpumpe
DE102014220881A1 (de) * 2014-10-15 2016-04-21 Continental Automotive Gmbh Rollenstößelvorrichtung und Verfahren zur Herstellung einer Rollenstößelvorrichtung
GB201506173D0 (en) * 2015-04-13 2015-05-27 Delphi Internat Operations Luxembourg S � R L Fuel pump
CN104929885A (zh) * 2015-07-07 2015-09-23 中国航天科技集团公司烽火机械厂 一种径向柱塞泵
DE102015219036A1 (de) * 2015-10-01 2017-04-06 Robert Bosch Gmbh Verfahren und Vorrichtung zum Betreiben einer Hochdruckpumpe für einen Brennkraftmotor
KR102239680B1 (ko) 2017-03-29 2021-04-12 바르실라 핀랜드 오이 내연 피스톤 기관을 위한 고압 연료 펌프 어셈블리
EP3601776A1 (fr) 2017-03-29 2020-02-05 Wärtsilä Finland Oy Pompe à carburant permettant d'alimenter un moteur à piston à combustion interne en carburant
CN110709598B (zh) 2017-03-29 2021-08-06 瓦锡兰芬兰有限公司 用于向内燃活塞发动机供应燃料的燃料泵
CN107965434B (zh) * 2018-01-16 2019-04-09 上海交通大学 一种压缩膨胀机的驱动机构
DE102018203319A1 (de) * 2018-03-06 2019-09-12 Robert Bosch Gmbh Kraftstoff-Hochdruckpumpe
DE102019208179A1 (de) * 2019-06-05 2020-12-10 Robert Bosch Gmbh Pumpe, insbesondere Kraftstoffhochdruckpumpe
DE102020104313B3 (de) * 2020-02-19 2021-01-28 Schaeffler Technologies AG & Co. KG Stößel zur Beaufschlagung eines Pumpenkolbens einer Kraftstoffhochdruckpumpe

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JP2000145572A (ja) * 1998-09-10 2000-05-26 Denso Corp 燃料噴射ポンプ
JP2002031017A (ja) * 2000-07-14 2002-01-31 Toyota Motor Corp 高圧ポンプ
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DE10215038A1 (de) * 2002-04-05 2003-10-23 Bosch Gmbh Robert Fluidpumpe

Also Published As

Publication number Publication date
CN100422551C (zh) 2008-10-01
DE502004005537D1 (de) 2007-12-27
EP1697636A1 (fr) 2006-09-06
US7308849B2 (en) 2007-12-18
DE10355027A1 (de) 2005-06-23
JP4243630B2 (ja) 2009-03-25
JP2006528744A (ja) 2006-12-21
CN1886594A (zh) 2006-12-27
WO2005052367A1 (fr) 2005-06-09
US20070071620A1 (en) 2007-03-29

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