WO2016198188A1 - Poussoir à galet pour une pompe à piston, pompe à piston - Google Patents

Poussoir à galet pour une pompe à piston, pompe à piston Download PDF

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Publication number
WO2016198188A1
WO2016198188A1 PCT/EP2016/058496 EP2016058496W WO2016198188A1 WO 2016198188 A1 WO2016198188 A1 WO 2016198188A1 EP 2016058496 W EP2016058496 W EP 2016058496W WO 2016198188 A1 WO2016198188 A1 WO 2016198188A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
bore
bearing gap
tappet
plunger body
Prior art date
Application number
PCT/EP2016/058496
Other languages
German (de)
English (en)
Inventor
Zafer AKKAYA
Rainer Kwasny
Markus Majer
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 WO2016198188A1 publication Critical patent/WO2016198188A1/fr

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
    • F04B1/0417—Cams consisting of two or more cylindrical elements, e.g. rollers
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0001—Fuel-injection apparatus with specially arranged lubricating system, e.g. by fuel oil
    • 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
    • F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/18—Lubricating

Definitions

  • roller tappet is specified with the features of claim 1.
  • piston pump is proposed with the features of claim 6.
  • Plunger body received in some areas and is rotatably mounted directly or indirectly on a bearing bush on a bolt.
  • a trained between the roller and the bolt or between the roller and the bearing bush radial bearing gap is supplied via at least one opening formed in the plunger body and opening into the frontal recess of the plunger bore with a lubricating medium.
  • the mouth region of the bore which serves to supply with a lubricating medium, is arranged in overlap with a negative pressure region of the radial bearing gap.
  • the underpressure area is defined by a roller bearing expanding in the direction of rotation of the roller under load of the roller tappet and / or in the case of a roller running on the cam or eccentric.
  • Plunger body which is formed between the plunger body and the roller and / or the bearing bush. In this way, at the same time the lubrication of the axial bearing gap can be optimized.
  • the bore is arranged substantially at the height of the axis of rotation of the roller.
  • the radial bearing gap has reached a gap width, which facilitates the entry of the lubricant, but which is below the maximum gap width, so that here there is a negative pressure, which pulls the lubricant into the bearing gap.
  • a piston pump in particular high-pressure fuel pump for fuel supply of an internal combustion engine, proposed, which comprises a liftable pump piston which is supported via a roller tappet according to the invention on a cam or eccentric of a drive shaft.
  • the plunger body of the roller tappet is received in a cylinder bore of a housing part of the piston pump liftable.
  • the roller tappet 1 comprises a tappet body 5, which is received in a liftable manner in a cylinder bore 17 of a housing part 18 of the piston pump, and a roller 6, which is partially received and rotatably mounted in a frontal recess 7 of the tappet body 5.
  • the rotatable mounting of the roller 6 is effected via a pin 9, which passes through the plunger body 5 in the region of the recess 7 and is held at its ends in the plunger body 5.
  • a bearing bush 8 is arranged between the pin 9 and the roller 6, but this bearing is not absolutely necessary.
  • the roller 6 is thus rotatable about a rotation axis 16 which is arranged perpendicular to a longitudinal axis 20 of the roller tappet 1 and parallel to a longitudinal axis 21 of the drive shaft 4. As the Fig. 1 also shows, opens into the cylinder bore 17 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

L'invention concerne un poussoir à galet (1) pour une pompe à piston, en particulier pour une pompe à carburant haute pression, pour l'appui d'un piston de pompe (2) mobile en translation sur une came (3) ou un excentrique d'un arbre d'entraînement (4), comprenant un corps de poussoir (5) et un galet cylindrique creux (6) disposé partiellement dans un logement frontal (7) du corps de poussoir (5) et monté rotatif sur un axe (9), directement, ou indirectement par l'intermédiaire d'une bague de palier (8), de telle sorte qu'un espace radial (10) est formé entre le galet (6) et l'axe (9), ou entre le galet (6) et la bague de palier (8), dans lequel un lubrifiant peut introduit par un perçage (11) formé dans le corps de poussoir (5), débouchant dans le logement (7). Selon l'invention la zone de sortie (12) du perçage (11) est agencée de manière à correspondre à une zone en dépression (13) dans l'espace radial (10), de sorte que lors d'une sollicitation du poussoir à galet (1) et/ou lorsque le galet (6) roule sur la came (3) ou sur l'excentrique, un espace qui s'élargit dans la direction de rotation du galet (6) est formé. L'invention concerne en outre une pompe à piston dotée d'un tel poussoir à galet (1).
PCT/EP2016/058496 2015-06-11 2016-04-18 Poussoir à galet pour une pompe à piston, pompe à piston WO2016198188A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015210721.3A DE102015210721A1 (de) 2015-06-11 2015-06-11 Rollenstößel für eine Kolbenpumpe, Kolbenpumpe
DE102015210721.3 2015-06-11

Publications (1)

Publication Number Publication Date
WO2016198188A1 true WO2016198188A1 (fr) 2016-12-15

Family

ID=55754312

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/058496 WO2016198188A1 (fr) 2015-06-11 2016-04-18 Poussoir à galet pour une pompe à piston, pompe à piston

Country Status (2)

Country Link
DE (1) DE102015210721A1 (fr)
WO (1) WO2016198188A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109751164A (zh) * 2017-11-02 2019-05-14 株式会社电装 用于燃料泵的挺杆

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2608626A (en) * 2021-07-06 2023-01-11 Delphi Tech Ip Ltd Roller tappet assembly

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001221131A (ja) * 2000-02-07 2001-08-17 Bosch Automotive Systems Corp 噴射ポンプのタペット潤滑機構
DE10115168C1 (de) * 2001-03-27 2002-08-22 Orange Gmbh Kraftstoff-Hochdruckpumpe, insbesondere für Einspritzsysteme von Brennkraftmaschinen
US20080006233A1 (en) * 2006-06-30 2008-01-10 Bartley Bradley E Tappet assembly
DE102009047568A1 (de) * 2009-12-07 2011-06-09 Robert Bosch Gmbh Kraftstoffhochdruckpumpe
DE102010030498A1 (de) * 2010-06-24 2011-12-29 Robert Bosch Gmbh Pumpe, insbesondere Kraftstoffhochdruckpumpe
DE102011086703A1 (de) * 2011-11-21 2013-05-23 Robert Bosch Gmbh Hochdruckpumpe
DE102012223413A1 (de) 2012-12-17 2014-06-18 Robert Bosch Gmbh Rollenstößel für eine Pumpe, insbesondere Kraftstoffhochdruckpumpe, und Pumpe mit Rollenstößel

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001221131A (ja) * 2000-02-07 2001-08-17 Bosch Automotive Systems Corp 噴射ポンプのタペット潤滑機構
DE10115168C1 (de) * 2001-03-27 2002-08-22 Orange Gmbh Kraftstoff-Hochdruckpumpe, insbesondere für Einspritzsysteme von Brennkraftmaschinen
US20080006233A1 (en) * 2006-06-30 2008-01-10 Bartley Bradley E Tappet assembly
DE102009047568A1 (de) * 2009-12-07 2011-06-09 Robert Bosch Gmbh Kraftstoffhochdruckpumpe
DE102010030498A1 (de) * 2010-06-24 2011-12-29 Robert Bosch Gmbh Pumpe, insbesondere Kraftstoffhochdruckpumpe
DE102011086703A1 (de) * 2011-11-21 2013-05-23 Robert Bosch Gmbh Hochdruckpumpe
DE102012223413A1 (de) 2012-12-17 2014-06-18 Robert Bosch Gmbh Rollenstößel für eine Pumpe, insbesondere Kraftstoffhochdruckpumpe, und Pumpe mit Rollenstößel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109751164A (zh) * 2017-11-02 2019-05-14 株式会社电装 用于燃料泵的挺杆
CN109751164B (zh) * 2017-11-02 2022-03-29 株式会社电装 用于燃料泵的挺杆

Also Published As

Publication number Publication date
DE102015210721A1 (de) 2016-12-15

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