Patent · US Active

High pressure pump, in particular for a fuel injection system of an internal combustion engine

US8191459B2 · kind B2 · utility

1Cited by

5References

33Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Peter-Josef Bauer · Bühl, DE
Markus Koch · Neu-Ulm, DE
Gernot Repphun · Balingen, DE
Wolfram Rittmannsberger · Stuttgart, DE

Key dates

Filing date	Jan 26, 2007
Grant date	Jun 5, 2012
Priority date	—
Expiry date	Nov 6, 2029

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2200/02
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The high pressure pump includes a drive shaft with at least one cam or eccentric and at least one pump element with a pump piston driven in the reciprocating direction by the cam or eccentric on the driveshaft in a reciprocating motion. A support element is arranged between the pump piston and the cam or eccentric on the driveshaft and also a roller running on the cam or eccentric is mounted to rotate therein. A support for the roller in the direction of rotation is arranged adjacent to the same in the direction of the rotational axis of the roller. The roller and/or the support include a surface with high wear resistance at least in the contact region between the roller and the support.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.