EP2464866A1 - Pompe à haute pression - Google Patents

Pompe à haute pression

Info

Publication number
EP2464866A1
EP2464866A1 EP10740213A EP10740213A EP2464866A1 EP 2464866 A1 EP2464866 A1 EP 2464866A1 EP 10740213 A EP10740213 A EP 10740213A EP 10740213 A EP10740213 A EP 10740213A EP 2464866 A1 EP2464866 A1 EP 2464866A1
Authority
EP
European Patent Office
Prior art keywords
roller
pump
roller tappet
piston
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.)
Granted
Application number
EP10740213A
Other languages
German (de)
English (en)
Other versions
EP2464866B1 (fr
Inventor
Arnold Gente
Matthias Greiner
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 EP2464866A1 publication Critical patent/EP2464866A1/fr
Application granted granted Critical
Publication of EP2464866B1 publication Critical patent/EP2464866B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • 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
    • 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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • F04B9/042—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being cams

Definitions

  • High-pressure pump has a pump housing, in which a pump element is arranged, which is driven by a drive shaft in a lifting movement
  • the cam or a drive shaft, on which the cam is provided has at least one guide web associated with the cam, which limits a side run of the roller along its axis of rotation.
  • two such guide webs are provided, the two sides a
  • Supporting portion 30 of the roller tappet 20 is designed belly-shaped. This results in a bulbous support region 30 of the roller tappet 20, on which the roller tappet 20 comes into contact with the bore 8 in the radial direction with respect to the main axis 7.
  • the bulbous support portion 30 is configured so that a lever arm 31 between a rotation axis 32 of the roller 21 and a support point 33 between the bulbous support region (belly) 30 of the roller tappet 20 and the bore 8 of the housing part 2 is relatively small.
  • the lever arm 31 can also be negligibly small.
  • the lateral force to be supported occurs as a force component of the roller force, which is introduced perpendicular to the main axis 7 of the cam drive.
  • the lateral force at normal cam pitches takes on a maximum of a quarter of the force applied by the cam force.
  • the piston actuating force which acts on the pump piston 11 in the direction of the main axis 7, is therefore significantly greater than the transverse force component.
  • the roller tappet 20 is guided in the bore 8, that the transverse force is introduced at least approximately at the height of the axis of rotation 32. This means that the lever arm 31 disappears.
  • Diameter of the pump piston 1 1 is sufficient to absorb the occurring tilting moment of the roller tappet 20.
  • the roller tappet 20 can be designed so that the point of force application does not move so far from the ideal point at the height of the axis of rotation 32 of the roller 21, that is, the lever arm 31 is relatively small.
  • the moment acting on the pump piston 1 1 torque can be further reduced by an offset of the bore 12 of the projection 10 to the axis of rotation 4 of the drive shaft 3.
  • the main axis 7 of the pump assembly 6 is slightly past the axis of rotation 4 of the drive shaft 3.
  • FIG. 2 shows a partial representation of the high-pressure pump 1 shown in FIG. 1 in a schematic sectional representation along the section line designated by II.
  • the spring plate 23 has in this embodiment support projections 35, 36 which extend laterally on the roller tappet 20 along the main axis 7 of the pump assembly 6.
  • the support extensions 35, 36 are guided laterally on both sides of the roller tappet 20, wherein these are on the side of the roller 21 on the roller tappet 20 addition.
  • the support extension 35 has a stop surface 37. Furthermore, the
  • Support extensions 35, 36 is a possible side run of the roller 21 along the axis of rotation 32 of the roller 21 limited.
  • the support extensions 35, 36 can be designed like an ear.
  • Compensation holes 39 to 42 serve to allow a flow of fuel. This avoids that takes place by the roller tappet 20, a compression of the fuel.
  • roller tappet 20 is applied. Furthermore, the spring plate 23 on a collar 25. With the collar 52 of the spring plate 23 engages behind the piston 50 of the pump piston 11 to connect the pump piston 11 with the spring plate 23 and thus also with the roller tappet 20.
  • the pump piston 1 1 is in this case designed tree trunk. As a result, a high strength of the pump piston 11 even with relatively large occurring
  • the pump piston 11 can thus absorb tilting moments which act on the roller tappet 20.
  • Embodiment are on the cam 5 and on the drive shaft 3, on which the cam 5 is provided, guide webs 55, 56 are provided.
  • the guide webs 55, 56 are in this case associated with the cam 5 and thus the pump assembly 6.
  • the guide webs 55, 56 are configured circumferentially.
  • the guide web 55 has a circumferential, inner guide surface 57.
  • the guide web 56 has a circumferential, inner guide surface 58.
  • the guide surfaces 57, 58 face each other.
  • the guide webs 55, 56 with the guide surfaces 57, 58 protrude in the radial direction beyond the cam surface 22 with respect to the rotation axis 4 of the drive shaft 3.
  • the guide surfaces 57, 58 of the guide webs 55, 56 thereby limit a possible side run of the roller 21 along the axis of rotation 32 of the roller 21.
  • Support extensions 35, 36 as illustrated for example in FIGS. 2 and 4, can be omitted here. This allows the mass of moving parts of the

Landscapes

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

Abstract

La présente invention concerne une pompe à haute pression (1), qui fait office en particulier de pompe à pistons radiaux ou de pompe à pistons en ligne pour des installations d'injection de carburant de moteurs à combustion interne comprimant de l'air et à autoallumage, qui présente un ensemble pompe (6) et un arbre d'entraînement (3). L'arbre d'entraînement (3) comprend une came (5) attribuée à l'ensemble pompe (6). L'ensemble pompe (6) comprend également un piston de pompe (11), un galet (21) roulant sur une surface (22) de la came (5) et un poussoir à galets (20), qui reçoit le galet (21). Selon l'invention, un basculement du poussoir à galets (20) par rapport un axe principal (7) de l'ensemble pompe (6), le long duquel le piston de pompe (11) peut être actionné, est limité par une action conjuguée du poussoir à galets (20) avec le piston de pompe (11), étant donné que le poussoir à galets (20) conçu de façon bombée s'appuie radialement dans un alésage de boîtier (8).
EP10740213.3A 2009-08-10 2010-08-03 Pompe à haute pression Not-in-force EP2464866B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910028394 DE102009028394A1 (de) 2009-08-10 2009-08-10 Hochdruckpumpe
PCT/EP2010/061260 WO2011018389A1 (fr) 2009-08-10 2010-08-03 Pompe à haute pression

Publications (2)

Publication Number Publication Date
EP2464866A1 true EP2464866A1 (fr) 2012-06-20
EP2464866B1 EP2464866B1 (fr) 2016-10-12

Family

ID=43034340

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10740213.3A Not-in-force EP2464866B1 (fr) 2009-08-10 2010-08-03 Pompe à haute pression

Country Status (5)

Country Link
EP (1) EP2464866B1 (fr)
KR (1) KR101773210B1 (fr)
CN (1) CN102472258B (fr)
DE (1) DE102009028394A1 (fr)
WO (1) WO2011018389A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014056975A1 (fr) * 2012-10-11 2014-04-17 Continental Automotive Gmbh Porte-galet multifonctionnel pour un ensemble poussoir à galet
DE102013212302A1 (de) * 2013-06-26 2014-12-31 Robert Bosch Gmbh Hochdruckpumpe und Kraftstoffeinspritzanlage mit einer Hochdruckpumpe
DE102013218260A1 (de) * 2013-09-12 2015-03-12 Continental Automotive Gmbh Rollenstößel
EP2915994A1 (fr) * 2014-03-06 2015-09-09 Continental Automotive GmbH Agencement de poussoir et pompe
CN104088769A (zh) * 2014-08-01 2014-10-08 吉首大学 偏心可调式柱塞泵
GB2543354A (en) 2015-10-16 2017-04-19 Gm Global Tech Operations Llc Roller tappet for a fuel unit pump of an internal combustion engine
DE102016203768B4 (de) * 2015-11-12 2017-10-26 Robert Bosch Gmbh Pumpe, insbesondere Hochdruckpumpe eines Kraftstoffeinspritzsystems, mit einem Montageverbund von Stößel-Baugruppe und Pumpenzylinderkopf, insbesondere durch eine Rastverbindung zwischen Federteller und Stößelkörper
GB2549303A (en) * 2016-04-12 2017-10-18 Delphi Int Operations Luxembourg Sarl High pressure fuel pump
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

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10355027A1 (de) * 2003-11-25 2005-06-23 Robert Bosch Gmbh Hochdruckpumpe, insbesondere für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine
DE602005020417D1 (de) * 2004-01-14 2010-05-20 Bosch Corp Kraftstoffzufuhrpumpe
DE102004002487A1 (de) * 2004-01-17 2005-08-11 Robert Bosch Gmbh Rollenstößel
DE102004004705A1 (de) * 2004-01-30 2005-08-18 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
DE102006041673A1 (de) * 2006-02-20 2007-08-23 Robert Bosch Gmbh Hochdruckpumpe, insbesondere für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine
DE102006012458A1 (de) * 2006-03-17 2007-09-20 Robert Bosch Gmbh Rollenstößel für ein Pumpenelement einer Kraftstoffhochdruckpumpe
DE102006045933A1 (de) * 2006-09-28 2008-04-03 Robert Bosch Gmbh Stößelbaugruppe für eine Hochdruckpumpe und Hochdruckpumpe mit wenigstens einer Stößelbaugruppe
DE102006048722A1 (de) * 2006-10-16 2008-04-17 Robert Bosch Gmbh Kolbenpumpe, insbesondere Kraftstoffhochdruckpumpe, mit Rollenstößel
DE102008043436A1 (de) * 2008-11-04 2010-05-06 Robert Bosch Gmbh Kolbenpumpe mit einem Kolbenhalter
DE102009001096A1 (de) * 2009-02-24 2010-08-26 Robert Bosch Gmbh Radialkolbenpumpe mit einer Nockenwelle mit partiell gehärteten Nockenflanken

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011018389A1 *

Also Published As

Publication number Publication date
CN102472258B (zh) 2015-08-12
WO2011018389A1 (fr) 2011-02-17
KR101773210B1 (ko) 2017-08-31
DE102009028394A1 (de) 2011-02-17
EP2464866B1 (fr) 2016-10-12
CN102472258A (zh) 2012-05-23
KR20120052293A (ko) 2012-05-23

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