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1. (WO2014206609) PUMPING DEVICE, IN PARTICULAR HIGH PRESSURE FUEL PUMPING DEVICE FOR A FUEL INJECTION DEVICE

Pub. No.:    WO/2014/206609    International Application No.:    PCT/EP2014/058926
Publication Date: Thu Jan 01 00:59:59 CET 2015 International Filing Date: Thu May 01 01:59:59 CEST 2014
IPC: F02M 63/00
F02M 59/06
F02M 59/10
F04B 1/04
F04B 53/00
F04B 53/18
F02M 63/02
Applicants: ROBERT BOSCH GMBH
Inventors: DUTT, Andreas
Title: PUMPING DEVICE, IN PARTICULAR HIGH PRESSURE FUEL PUMPING DEVICE FOR A FUEL INJECTION DEVICE
Abstract:
The pumping device, in particular high pressure fuel pumping device, has at least one pump element (10) which has a pump piston (12) which is driven in a reciprocating movement by a drive shaft (14) via a tappet (18), wherein the drive shaft (14) has at least one cam (16) or eccentric, on which the tappet (18) is supported at least indirectly. The drive shaft (14) is mounted rotatably via at least one bearing point (60), wherein the at least one bearing point (60) is fed lubricating medium which exits from the at least one bearing point (60) towards the at least one cam (16) or eccentric. Between the at least one bearing point (60) and the at least one cam (16) or eccentric, the drive shaft (14) has an outer contour (66) which increases in diameter from the at least one bearing point (60) towards the at least one cam (16) or eccentric and ends in the region of the tappet (18) as viewed in the direction of the rotational axis (15) of the drive shaft (14). Lubricating medium is guided in a targeted manner to the tappet (18) by way of the outer contour (66).