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WO2009124788A1 - Agencement de pompe à haute pression avec pompe à haute pression à piston unique - Google Patents

Agencement de pompe à haute pression avec pompe à haute pression à piston unique Download PDF

Info

Publication number
WO2009124788A1
WO2009124788A1 PCT/EP2009/051237 EP2009051237W WO2009124788A1 WO 2009124788 A1 WO2009124788 A1 WO 2009124788A1 EP 2009051237 W EP2009051237 W EP 2009051237W WO 2009124788 A1 WO2009124788 A1 WO 2009124788A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure pump
pump
cam
pressure
fuel
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.)
Ceased
Application number
PCT/EP2009/051237
Other languages
German (de)
English (en)
Inventor
Gerhard Meier
Friedrich Boecking
Andreas Dutt
Jochen Aleker
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
Priority to EP09729288A priority Critical patent/EP2274517A1/fr
Priority to CN2009801122554A priority patent/CN101990600A/zh
Publication of WO2009124788A1 publication Critical patent/WO2009124788A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • 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
    • F04B1/0413—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
    • F04B1/06—Control
    • F04B1/07—Control by varying the relative eccentricity between two members, e.g. a cam and a drive shaft

Definitions

  • the invention relates to a high-pressure pump arrangement for injecting fuel, comprising a one-piece high-pressure pump with a high-pressure cylinder, in which a piston plunger for pressurizing fuel is arranged axially movable and driven by a pump cam with at least one survey.
  • Such a high-pressure pump arrangement is known from DE 10 2004 004 705 Al. Disclosed is a high pressure pump with a
  • the pump elements each have a driven by a drive shaft piston plunger.
  • the piston plunger is tightly guided in a corresponding high pressure cylinder of a housing part of the high pressure pump and limited in the cylinder bore a pump working space.
  • the piston plunger is supported on a pump cam of the drive shaft.
  • the piston plunger is acted upon by a biased return spring to the pump cam out.
  • a roller is rotatably mounted, via which the piston plunger bears against the pump cam of the drive shaft.
  • a rotation of the drive shaft and thus of the pump cam causes the pumping movement to pressurize the fuel located within the pump working chamber, which cooperates via a check valve arrangement arranged on the inlet and outlet side of the pump chamber.
  • Such a one-shot high-pressure pump is usually operated via a pump cam with two opposite elevations. Compared to only one survey will thus a higher Achieved delivery capacity of the one-time high-pressure pump.
  • the prior art design principle described above for a 6-cylinder engine results in a 2/3 gear ratio when using a one-shot high pressure pump with two bumps of the pump cam.
  • High-pressure pump must therefore run faster than the drive shaft.
  • an additional transmission gear has been provided by the drive shaft so far in this problem.
  • this increases the construction costs.
  • the object is achieved on the basis of a high-pressure pump arrangement according to the preamble in claim 1 in conjunction with its characterizing features.
  • the following dependent claims give advantageous developments of the invention.
  • the object is achieved by claim 8.
  • n of the mathematical number series is an integer.
  • the invention is intended for engines with a multiple of 3 cylinders.
  • injection-synchronous 3, 6 or 12-cylinder engines can be operated, in particular the most commonly used 6 or 12-cylinder engines.
  • the three elevations of the pump cam arranged at equidistant intervals along the outer circumference are arranged at an angle of 120 °. Based on the idea of the invention, injection synchronicity can also be achieved in the case of an embodiment of more than three elevations.
  • the advantage of the solution according to the invention is based on the recognition that for a synchronous delivery of fuel, the speed of the high-pressure pump is to be adapted to the engine speed.
  • the solution based on this finding invention solution can be structurally simple to implement in which only a modified pump cam with three surveys, which is easily manufacturable, is provided.
  • the inventively manufactured pump cam results in cooperation with a Einstempligen
  • the solution according to the invention is particularly suitable for diesel injection pumps.
  • high-pressure pump assemblies of Internal combustion engines with 6- or 12-cylinder engine are used, which are used to drive a motor vehicle.
  • Figure 1 is a schematic sectional view of a
  • FIG. 2 is a schematic sectional view of a high-pressure pump arrangement in the region of
  • the high-pressure pump arrangement for injecting fuel has a one-piece high-pressure pump 1, which is equipped with a high-pressure cylinder 2, in which a piston plunger 3 for axially pressurizing fuel is arranged.
  • Roller 4 via camshaft 5, which has a pump cam 6.
  • the pump cam 6 comes to the roller 4 of the piston plunger 3 to the plant and has three at equidistant intervals at an angle of 120 ° arranged elevations 7a to 7c.
  • the elevations 7a to 7c are seen in cross-section rounded and straight Intermediate sections 8a to 8c connected.
  • the straight intermediate sections 8a to 8c between the rounded elevations 7a to 7c produce a reduced stroke of the piston plunger 3 during the pumping operation.
  • sections 8a 'to 8c' can achieve a constant stroke of the piston plunger 3 during operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Reciprocating Pumps (AREA)

Abstract

L'invention porte sur un agencement de pompe à haute pression destiné à l'injection de carburant, comprenant une pompe à haute pression à piston unique (1) avec un cylindre à haute pression (2) dans lequel un coulisseau de piston (3) est monté mobile axialement pour appliquer une pression au carburant et est entraîné par une came de pompe (6) possédant au moins une saillie (7a, 7b, 7c), la came de pompe (6) possédant exactement trois saillies (7a, 7b, 7c) disposées en des points équidistants sur la périphérie extérieure afin de réaliser la synchronisation de l'injection pour une série de moteurs à 3x cylindres (pour x = 1, 2, 3, ..., n) sans transmission intermédiaire.
PCT/EP2009/051237 2008-04-07 2009-02-04 Agencement de pompe à haute pression avec pompe à haute pression à piston unique Ceased WO2009124788A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09729288A EP2274517A1 (fr) 2008-04-07 2009-02-04 Agencement de pompe à haute pression avec pompe à haute pression à piston unique
CN2009801122554A CN101990600A (zh) 2008-04-07 2009-02-04 设有单柱塞式高压泵的高压泵装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810001019 DE102008001019A1 (de) 2008-04-07 2008-04-07 Hochdruckpumpenanordnung mit einstempliger Hochdruckpumpe
DE102008001019.7 2008-04-07

Publications (1)

Publication Number Publication Date
WO2009124788A1 true WO2009124788A1 (fr) 2009-10-15

Family

ID=40626775

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/051237 Ceased WO2009124788A1 (fr) 2008-04-07 2009-02-04 Agencement de pompe à haute pression avec pompe à haute pression à piston unique

Country Status (4)

Country Link
EP (1) EP2274517A1 (fr)
CN (1) CN101990600A (fr)
DE (1) DE102008001019A1 (fr)
WO (1) WO2009124788A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010052054A1 (fr) * 2008-11-04 2010-05-14 Robert Bosch Gmbh Pompe à piston avec un arbre d'entraînement portant une triple came optimisée

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011083571A1 (de) * 2011-09-28 2013-03-28 Robert Bosch Gmbh Stößelbaugruppe für eine Kraftstoffhochdruckpumpe sowie Kraftstoffhochdruckpumpe
DE102014201789B4 (de) * 2014-01-31 2022-01-05 Bayerische Motoren Werke Aktiengesellschaft Antriebssystem einer Kraftstoff-Hochdruckpumpe, Kraftstoff- Hochdruckpumpen-Baugruppe sowie Verbrennungsmotor

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE522434C (de) * 1930-04-17 1931-04-09 Sidarblen Engines Ltd Brennstoffpumpe fuer Brennkraftmaschinen
DE560073C (de) * 1927-10-05 1932-09-28 John Wilkinson Onions Brennstoffpumpe
US2423701A (en) * 1945-01-01 1947-07-08 Marquette Metal Products Co Pump
DE942066C (de) * 1954-01-26 1956-04-26 Cav Ltd Kolbenpumpe
DE4127751C1 (fr) * 1991-08-22 1992-11-12 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
WO1994027039A1 (fr) * 1993-05-06 1994-11-24 Cummins Engine Company, Inc. Pompe a haute pression a deplacement variable s'utilisant dans des systemes d'injection de carburant comportant un rail commun
FR2878910A1 (fr) * 2004-12-07 2006-06-09 Renault Sas Pompe rotative a mode de fonctionnement reglable, et application

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19646581A1 (de) * 1996-11-12 1998-05-14 Bosch Gmbh Robert Kraftstoffeinspritzsystem
JP3851056B2 (ja) * 2000-04-18 2006-11-29 トヨタ自動車株式会社 高圧ポンプ
DE102004004705A1 (de) 2004-01-30 2005-08-18 Robert Bosch Gmbh Hochdruckpumpe, insbesondere für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine
JP4111956B2 (ja) * 2005-01-14 2008-07-02 三菱電機株式会社 内燃機関の燃料供給装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE560073C (de) * 1927-10-05 1932-09-28 John Wilkinson Onions Brennstoffpumpe
DE522434C (de) * 1930-04-17 1931-04-09 Sidarblen Engines Ltd Brennstoffpumpe fuer Brennkraftmaschinen
US2423701A (en) * 1945-01-01 1947-07-08 Marquette Metal Products Co Pump
DE942066C (de) * 1954-01-26 1956-04-26 Cav Ltd Kolbenpumpe
DE4127751C1 (fr) * 1991-08-22 1992-11-12 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
WO1994027039A1 (fr) * 1993-05-06 1994-11-24 Cummins Engine Company, Inc. Pompe a haute pression a deplacement variable s'utilisant dans des systemes d'injection de carburant comportant un rail commun
FR2878910A1 (fr) * 2004-12-07 2006-06-09 Renault Sas Pompe rotative a mode de fonctionnement reglable, et application

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2274517A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010052054A1 (fr) * 2008-11-04 2010-05-14 Robert Bosch Gmbh Pompe à piston avec un arbre d'entraînement portant une triple came optimisée

Also Published As

Publication number Publication date
CN101990600A (zh) 2011-03-23
EP2274517A1 (fr) 2011-01-19
DE102008001019A1 (de) 2009-10-08

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