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EP2182210A3 - Piston pump with a piston holder - Google Patents

Piston pump with a piston holder Download PDF

Info

Publication number
EP2182210A3
EP2182210A3 EP09169898.5A EP09169898A EP2182210A3 EP 2182210 A3 EP2182210 A3 EP 2182210A3 EP 09169898 A EP09169898 A EP 09169898A EP 2182210 A3 EP2182210 A3 EP 2182210A3
Authority
EP
European Patent Office
Prior art keywords
piston
pump
roller
compression spring
pump 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.)
Withdrawn
Application number
EP09169898.5A
Other languages
German (de)
French (fr)
Other versions
EP2182210A2 (en
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 EP2182210A2 publication Critical patent/EP2182210A2/en
Publication of EP2182210A3 publication Critical patent/EP2182210A3/en
Withdrawn legal-status Critical Current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
    • F04B1/0439—Supporting or guiding means for the pistons
    • 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

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)

Abstract

Bei einer Kolbenpumpe (1) mit mindestens einem zumindest annähernd radial zu einer Antriebswelle (3) verschiebbar geführten Pumpenkolben (8), der über eine in einem Rollenschuh (12) drehbar gelagerte Laufrolle (13) auf einer Nockenbahn (7) der Antriebswelle (3) abgestützt ist und dadurch in einer Hubbewegung angetrieben ist, und mit einer Druckfeder (16), die sowohl den Pumpenkolben (8) in Anlage an dem Rollenschuh (12) als auch die Laufrolle (13) über den Rollenschuh (12) in Anlage an der Nockenbahn (7) hält, drückt erfindungsgemäß die Druckfeder (16) auf einen Kolbenhalter (14), der an dem Pumpenkolben (8) gehalten ist und in Druckrichtung (17) der Druckfeder (16) sowohl an dem Pumpenkolben (8) als auch an dem Rollenschuh (12) anliegt.

Figure imgaf001
In a piston pump (1) with at least one at least approximately radially to a drive shaft (3) slidably guided pump piston (8) via a roller shoe (12) rotatably mounted roller (13) on a cam track (7) of the drive shaft (3 ) is supported and thereby driven in a lifting movement, and with a compression spring (16), both the pump piston (8) in contact with the roller shoe (12) and the roller (13) via the roller shoe (12) in abutment the cam track (7) holds, according to the invention presses the compression spring (16) on a piston holder (14) which is held on the pump piston (8) and in the pressure direction (17) of the compression spring (16) both on the pump piston (8) and rests against the roller shoe (12).
Figure imgaf001
EP09169898.5A 2008-11-04 2009-09-10 Piston pump with a piston holder Withdrawn EP2182210A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810043436 DE102008043436A1 (en) 2008-11-04 2008-11-04 Piston pump with a piston holder

Publications (2)

Publication Number Publication Date
EP2182210A2 EP2182210A2 (en) 2010-05-05
EP2182210A3 true EP2182210A3 (en) 2013-07-17

Family

ID=41629374

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09169898.5A Withdrawn EP2182210A3 (en) 2008-11-04 2009-09-10 Piston pump with a piston holder

Country Status (2)

Country Link
EP (1) EP2182210A3 (en)
DE (1) DE102008043436A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009028394A1 (en) * 2009-08-10 2011-02-17 Robert Bosch Gmbh high pressure pump
EP2628942B1 (en) 2012-02-14 2014-10-01 Continental Automotive GmbH Pump and common rail fuel injection system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003031816A1 (en) * 2001-09-28 2003-04-17 Siemens Aktiengesellschaft Connecting element for connecting a piston to a restoring element
EP1557558A1 (en) * 2002-10-29 2005-07-27 Bosch Automotive Systems Corporation Fuel supply pump and tappet structure body
WO2005073554A1 (en) * 2004-01-30 2005-08-11 Robert Bosch Gmbh High-pressure pump, particularly for a fuel injection device of a combustion engine
DE102006012458A1 (en) * 2006-03-17 2007-09-20 Robert Bosch Gmbh Roller tappet for a pump element of a high-pressure fuel pump

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006045933A1 (en) 2006-09-28 2008-04-03 Robert Bosch Gmbh Plunger assembly for a high pressure pump and high pressure pump with at least one plunger assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003031816A1 (en) * 2001-09-28 2003-04-17 Siemens Aktiengesellschaft Connecting element for connecting a piston to a restoring element
EP1557558A1 (en) * 2002-10-29 2005-07-27 Bosch Automotive Systems Corporation Fuel supply pump and tappet structure body
WO2005073554A1 (en) * 2004-01-30 2005-08-11 Robert Bosch Gmbh High-pressure pump, particularly for a fuel injection device of a combustion engine
DE102006012458A1 (en) * 2006-03-17 2007-09-20 Robert Bosch Gmbh Roller tappet for a pump element of a high-pressure fuel pump

Also Published As

Publication number Publication date
EP2182210A2 (en) 2010-05-05
DE102008043436A1 (en) 2010-05-06

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