Patent · US Expired

Radial piston pump with piston rod elements in rolling contact with the pump pistons

US6991438B2 · kind B2 · utility

11Cited by

10References

26Claims

0Family size

Assignee

Daimlerchrysler AG · US

Inventors

Gerd Blessing · Meckenbeuren, DE
Swen Fleisch · Stuttgart, DE
Karl-Heinz Hoffmann · Rommerskirchen, DE
Manfred Muller · Wuppertal, DE
Claus Stenger · Stuttgart, DE
Bernd Wiemann · Hersbruck, DE

Key dates

Filing date	Mar 20, 2003
Grant date	Jan 31, 2006
Priority date	—
Expiry date	Sep 16, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/2107
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In a piston pump for providing high-pressure fuel in a common-rail fuel injection system including a camshaft (2), which is mounted rotatably in a pump housing (1) and which has at least one eccentric cam 93) for operating a pump piston (4, 14) in an approximately radial direction with respect to the camshaft (2), in order to reduce the wear of the piston pump, a piston-rod element (6, 16, 26, 36, 46) is arranged between each pump piston (4, 14) and the eccentric cam (3) so as to transmit the stroke movement (5) and the force from the eccentric cam of the camshaft (2) to the pump piston (4, 14) by a rolling movement.

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