Patent · US Expired

High-pressure pump for a fuel injection system of an internal combustion engine

US7278348B2 · kind B2 · utility

2Cited by

9References

21Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Thomas Kleinbeck · Lambach, DE
Andreas Vogt · Eitorf, DE
Alexander Redlich · Echterdingen, DE
Markus Koch · Neu-Ulm, DE

Key dates

Filing date	Aug 11, 2003
Grant date	Oct 9, 2007
Priority date	—
Expiry date	Apr 22, 2024

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05C2253/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A high-pressure pump having a drive shaft and at least one pump element including a pump piston driven in a reciprocating motion by the drive shaft. A ring on which the pump piston is braced via a support element is rotatably supported on a portion of the drive shaft that is disposed eccentrically to its pivot axis. The ring and/or the support element, at least in their contact region, has many microscopic indentations, and a solid lubricant film is applied to the ring and/or to the support element, at least in their contact region.

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