EP2265811B1 - Pompe haute pression - Google Patents

Pompe haute pression Download PDF

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Publication number
EP2265811B1
EP2265811B1 EP09722786A EP09722786A EP2265811B1 EP 2265811 B1 EP2265811 B1 EP 2265811B1 EP 09722786 A EP09722786 A EP 09722786A EP 09722786 A EP09722786 A EP 09722786A EP 2265811 B1 EP2265811 B1 EP 2265811B1
Authority
EP
European Patent Office
Prior art keywords
pump
drive shaft
pump assembly
spring element
piston
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.)
Not-in-force
Application number
EP09722786A
Other languages
German (de)
English (en)
Other versions
EP2265811A1 (fr
Inventor
Friedrich Boecking
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 EP2265811A1 publication Critical patent/EP2265811A1/fr
Application granted granted Critical
Publication of EP2265811B1 publication Critical patent/EP2265811B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F02M59/48—Assembling; Disassembling; Replacing
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2307/00—Preventing the rotation of tappets

Definitions

  • a similar high-pressure pump which has 3 pump pistons arranged on a circumference. These pump pistons also cooperate with a stop ring, which is needle-mounted on an eccentric of the drive shaft. These pistons are pressed by a retaining ring against this actuating ring.
  • the well-known High-pressure pump has a pump housing in which a pump element is arranged, which has a driven by a drive shaft in a stroke pump piston which is slidably guided in a cylinder bore of a portion of the pump housing and limited in this a pump working space.
  • the pump piston is supported on the drive shaft via a hollow-cylindrical ram, wherein the ram is displaceably guided in a bore of a part of the pump housing in the direction of the longitudinal axis of the pump piston.
  • a return spring is provided, which ensures a contact of the pump piston on the plunger, so that the entire composite of pump piston, plunger and support element is acted upon via a roller to the cam of the drive shaft.
  • the main body 6 of the housing 2 has a first bore 15 and at least one second bore 16, which are arranged with respect to the axis 4 of the drive shaft 3 in mutually opposite radial directions.
  • a first pump assembly 17 is arranged in the first bore 15 of the base body 6.
  • a second pump assembly 18 is disposed in the second bore 16 of the base body 6.
  • the structure and function of the pump assemblies 17, 18 are described mainly with reference to the first pump assembly 17.
  • the structure of the second pump assembly 18 substantially corresponds to that of the first pump assembly 17.
  • the cam 9 serves both to drive the first pump assembly 17 and the second pump assembly 18.
  • the spring elements 40, 41, the respective elements of the pump assemblies 17, 18 are held together, so that a reliable operation of the high-pressure pump 1 is possible, with separate return springs for the pistons 23, 23 'of the pump assemblies 17, 18 can each be saved.
  • This allows, inter alia, the relatively thick-walled design of the projection 21 to the cylinder bore 22 of the first pump assembly 17 and a corresponding configuration in the second pump assembly 18.
  • Fig. 2 shows an excerpted section through the in Fig. 1 shown high pressure pump 1 along the designated II cutting line according to the embodiment of the first embodiment of the invention.
  • the headband 45 is designed band-shaped and inserted into a groove-shaped recess 48 in the skate 35.
  • the spring elements 40, 41 are at least partially inserted into the groove-shaped recess 48 of the roller skate 35.
  • By inserting the retaining clip 45 and the spring elements 40, 41 in the groove-shaped recess 48 is a rotation of the skate 35 with respect to a desired position in which the roller 36 is guided coaxially with the axis 4 of the drive shaft 3, prevented.
  • a coaxial movement of the roller 36 is achieved to the drive shaft 3.
  • a high reliability of the high-pressure pump 1 can be ensured.
  • Fig. 3 shows an excerpted section through a high pressure pump 1 along the in Fig. 1 designated III cutting line according to a second embodiment of the invention.
  • the headband 45 is shown cut back at the height of an axis 49 of the piston 23 to allow the view of the spring element 40, the groove-shaped recess 48 and the skate 35.
  • the spring element 40 has a band-shaped portion 49.
  • the band-shaped portion 49 has a circular opening 50, through which the pin-shaped projection 46 'of the starting element 46 extends.
  • the pin-shaped projection 46 'of the starting element 46 also extends through a corresponding opening in the retaining clip 45, so that the spring element 40 is reliably connected at its band-shaped portion 49 to the retaining clip 45.
  • the band-shaped portion 49 of the spring element 40 is partially inserted into the groove-shaped recess 48 of the skate 35, so that a rotation of the skate 35 is prevented from its desired position.
  • the spring element 40 runs in the region of the roller skate 35 in a groove-shaped recess 48, so that a rotation of the roller skate 35 is prevented.
  • the high-pressure pump 1 Special advantages of the high-pressure pump 1 are thus a significantly reinforced, given by the housing part 19 cylinder head and the guaranteed rotation.
  • the reinforced cylinder head allows an optionally significant increase in the efficiency of the high pressure pump. 1

Landscapes

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

Claims (8)

  1. Pompe haute pression (1), notamment pompe à carburant pour installations d'injection de carburant de moteurs à combustion interne à auto-allumage et compression d'air, comprenant un premier module de pompe (17), au moins un deuxième module de pompe (18) et un arbre d'entraînement (3), le premier module de pompe (17) étant disposé par rapport à l'arbre d'entraînement (3) au moins approximativement en face du deuxième module de pompe (18), l'arbre d'entraînement (3) servant à entraîner le premier module de pompe (17) et le deuxième module de pompe (18), et au moins un élément de ressort (40) étant prévu, lequel est connecté d'une part au moins de manière indirecte à un piston (23) du premier module de pompe (17) et d'autre part au moins de manière indirecte à un piston (23') du deuxième module de pompe (18), l'arbre d'entraînement (3) présentant au moins une came (9), caractérisée en ce que le premier module de pompe (17) présente un patin de roulement (35) qui reçoit un rouleau (36) roulant sur la came (9) de l'arbre d'entraînement (3), en ce que le patin de roulement (35) présente un évidement (48) en forme de rainure dans lequel l'élément de ressort (40) est disposé au moins en partie, en ce que l'élément de ressort (40) présente une portion en forme de bande (49) et en ce que la portion en forme de bande (49) de l'élément de ressort (40) est au moins en partie incorporée dans l'évidement (48) en forme de rainure du patin de roulement (35).
  2. Pompe haute pression selon la revendication 1, caractérisée en ce que l'élément de ressort (40) est réalisé sous forme d'élément de ressort annulaire (40).
  3. Pompe haute pression selon la revendication 2, caractérisée en ce que l'élément de ressort annulaire (40) entoure l'arbre d'entraînement (3).
  4. Pompe haute pression selon l'une quelconque des revendications précédentes, caractérisée en ce que le rouleau (36) est orienté au moins essentiellement coaxialement à un axe (4) de l'arbre d'entraînement (3), et en ce qu'au moins un élément de butée (46, 47) est fixé sur l'élément de ressort (40) dans la région du rouleau (36), lequel limite un déplacement du rouleau (36) dans la direction de l'axe (4) de l'arbre d'entraînement (3).
  5. Pompe haute pression selon l'une quelconque des revendications 1 à 4, caractérisée en ce que le premier agencement de pompe (17) présente un étrier de retenue (45) qui relie le piston (23) du premier module de pompe (17) à l'élément de ressort (40).
  6. Pompe haute pression selon la revendication 5, caractérisée en ce qu'il est prévu un autre élément de ressort (41) qui est connecté d'une part au moyen de l'étrier de retenue (45) au piston (23) du premier module de pompe (17) et d'autre part au moins de manière indirecte au piston (23') du deuxième module de pompe (18), et en ce que l'élément de ressort (40) et l'autre élément de ressort (41) sont espacés l'un de l'autre dans la direction d'un axe (4) de l'arbre d'entraînement (3) et sont prévus sur des côtés différents de la came (9) de l'arbre d'entraînement (3).
  7. Pompe haute pression selon l'une quelconque des revendications 1 à 6, caractérisée en ce que le premier module de pompe (17) est fermé par une culasse (19) sur laquelle est réalisé un élément rapporté (21) saillant dans le premier module de pompe (17), en ce qu'un alésage de cylindre (22) est réalisé dans l'élément rapporté (21), le piston (23) limitant un espace de travail de pompe (24) dans l'alésage de cylindre (22) et en ce qu'un diamètre extérieur (31) de l'élément rapporté (21) est essentiellement égal à un diamètre intérieur (32) d'un alésage (15) dans un corps de base (6) d'un boîtier (2) dans lequel est inséré le premier module de pompe (17).
  8. Pompe haute pression selon la revendication 7, caractérisée en ce que l'élément de ressort (40) précontraint le piston (23) dans la direction de l'arbre d'entraînement (3) et en ce qu'aucun ressort de rappel séparé n'est prévu dans la région de l'élément rapporté (21) de la culasse (19).
EP09722786A 2008-03-17 2009-01-22 Pompe haute pression Not-in-force EP2265811B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008000710A DE102008000710A1 (de) 2008-03-17 2008-03-17 Hochdruckpumpe
PCT/EP2009/050679 WO2009115353A1 (fr) 2008-03-17 2009-01-22 Pompe haute pression

Publications (2)

Publication Number Publication Date
EP2265811A1 EP2265811A1 (fr) 2010-12-29
EP2265811B1 true EP2265811B1 (fr) 2011-09-07

Family

ID=40430017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09722786A Not-in-force EP2265811B1 (fr) 2008-03-17 2009-01-22 Pompe haute pression

Country Status (5)

Country Link
EP (1) EP2265811B1 (fr)
CN (1) CN101978158B (fr)
AT (1) ATE523685T1 (fr)
DE (1) DE102008000710A1 (fr)
WO (1) WO2009115353A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010063363A1 (de) * 2010-12-17 2012-06-21 Robert Bosch Gmbh Hochdruckpumpe
DE102012212579B4 (de) * 2012-07-18 2018-11-22 Continental Automotive Gmbh Rollenstößelanordnung für eine Radialkolbenpumpe mit zwei Sicherungselementen für die Laufrolle des Rollenstößels
CN103726964A (zh) * 2012-10-16 2014-04-16 北京亚新科天纬油泵油嘴股份有限公司 高压共轨泵用的吸油控制装置
FR3016929B1 (fr) * 2014-01-30 2018-02-16 Societe De Motorisations Aeronautiques Dispositif d'injection de carburant pour moteur a pistons a plat
DE102017103483B3 (de) * 2017-02-21 2018-01-04 Schaeffler Technologies AG & Co. KG Rollenstößel
DE102017107100B3 (de) * 2017-04-03 2018-06-14 Schaeffler Technologies AG & Co. KG Leichtbau Rollenstößel
DE102017107099B3 (de) 2017-04-03 2018-06-28 Schaeffler Technologies AG & Co. KG Mehrteiliger Rollenstößel für eine Kraftstoffhochdruckpumpe
IT201800006423A1 (it) * 2018-06-18 2019-12-18 Gruppo di pompaggio per alimentare combustibile, preferibilmente gasolio, ad un motore a combustione interna

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB533405A (en) * 1939-11-03 1941-02-12 Automotive Prod Co Ltd Improvements in or relating to reciprocating pumps
DE4027794C2 (de) 1990-09-01 2002-06-20 Continental Teves Ag & Co Ohg Hydraulische Radialkolbenpumpe
DE9209366U1 (de) * 1992-07-11 1993-07-29 Wap Reinigungssysteme Gmbh & Co, 89287 Bellenberg Radialkolbenpumpe
DE19650276A1 (de) * 1996-12-04 1998-06-10 Teves Gmbh Alfred Hubkolbenpumpe
DE19816044C2 (de) * 1998-04-09 2002-02-28 Bosch Gmbh Robert Radialkolbenpumpe zur Kraftstoffhochdruckerzeugung
DE19948445A1 (de) * 1999-10-08 2001-04-12 Continental Teves Ag & Co Ohg 6-Kolben-Pumpe, insbesondere für geregelte Bremssysteme
DE10355027A1 (de) * 2003-11-25 2005-06-23 Robert Bosch Gmbh Hochdruckpumpe, insbesondere für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine
DE102005046670A1 (de) 2005-09-29 2007-04-05 Robert Bosch Gmbh Hochdruckpumpe, insbesondere für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine

Also Published As

Publication number Publication date
ATE523685T1 (de) 2011-09-15
WO2009115353A1 (fr) 2009-09-24
DE102008000710A1 (de) 2009-09-24
CN101978158B (zh) 2013-03-27
EP2265811A1 (fr) 2010-12-29
CN101978158A (zh) 2011-02-16

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