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1. WO2013127546 - HIGH-PRESSURE PUMP

Publication Number WO/2013/127546
Publication Date 06.09.2013
International Application No. PCT/EP2013/050140
International Filing Date 07.01.2013
IPC
F02M 59/10 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
59Pumps specially adapted for fuel-injection and not provided for in groups F02M39/-F02M57/126
02of reciprocating-piston type
10characterised by the piston drive
F04B 1/04 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
1Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
04having cylinders in star- or fan-arrangement
CPC
F02M 59/102
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
59Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00 ; , e.g. rotary cylinder-block type of pumps
02of reciprocating-piston ; or reciprocating-cylinder; type
10characterised by the piston-drive
102Mechanical drive, e.g. tappets or cams
F04B 1/0417
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
1Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
04having cylinders in star- or fan-arrangement
0404Details or component parts
0413Cams
0417consisting of two or more cylindrical elements, e.g. rollers
Applicants
  • ROBERT BOSCH GMBH [DE]/[DE] (AllExceptUS)
  • AMBROCK, Sascha [CN]/[CN] (US)
Inventors
  • AMBROCK, Sascha
Common Representative
  • ROBERT BOSCH GMBH
Priority Data
10 2012 203 328.902.03.2012DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) HOCHDRUCKPUMPE
(EN) HIGH-PRESSURE PUMP
(FR) POMPE À HAUTE PRESSION
Abstract
(DE)
Die Erfindung betrifft Hochdruckpumpe für ein Kraftstoffeinspritzsystem umfassend wenigstens ein Pumpenelement (1) mit einem hubbeweglichen Pumpenkolben (2) und einer Antriebswelle (3), über welche der Pumpenkolben (2) zu einer Hubbewegung antreibbar ist, wobei der Pumpenkolben (2) mittelbar über eine Stößelbaugruppe (4), umfassend einen Stößelkörper (5) und eine hierin aufgenommene, drehbar gelagerte Laufrolle (6), an einem Nocken (7) der Antriebswelle (3) abgestützt ist. Erfindungsgemäß steht die Laufrolle (6) über wenigstens 2/3 ihrer Länge (a) in Kontakt mit dem Nocken (7) und über maximal 1/3 ihrer Länge (a) in Kontakt mit einem Gleitlager (8) zur drehbaren Lagerung der Laufrolle (6).
(EN)
The invention relates to a high-pressure pump for a fuel injection system, comprising at least one pump element (1) with a pump piston (2) which can carry out a stroke movement and with a driveshaft (3), via which the pump piston (2) can be driven so as to carry out a stroke movement. The pump piston (2) is supported on a cam (7) of the driveshaft (3) indirectly via a tappet assembly (4), which comprises a tappet body (5) and a rotatably mounted running roller (6) received in said tappet body. According to the invention, the running roller (6) is in contact with the cam (7) over at least 2/3 of the length (a) of the running roller and with a sliding bearing (8) over maximally 1/3 of the length (a) of the running roller in order to rotatably mount the running roller (6).
(FR)
L'invention concerne une pompe à haute pression pour un système d'injection de carburant, comprenant au moins un élément de pompe (1) muni d'un piston de pompe (2) pouvant effectuer un mouvement alternatif et d'un arbre d'entraînement (3) par le biais duquel le piston de pompe (2) peut être entraîné selon un mouvement alternatif. Le piston de pompe (2) s'appuie indirectement sur une came (7) de l'arbre d'entraînement (3) par le biais d'un sous-ensemble coulisseau (4), comprenant un corps de coulisseau (5) dans lequel est logé un galet de roulement (6) supporté en rotation. Conformément à l'invention, le galet de roulement (6) se trouve sur au moins 2/3 de sa longueur (a) en contact avec la came (7) et sur un maximum de 1/3 de sa longueur (a) en contact avec un palier lisse (8) destiné à supporter en rotation le galet de roulement (6).
Also published as
Latest bibliographic data on file with the International Bureau