Patent · US Expired

High-pressure fuel pump with integrated blocking-vane prefeed pump

US6807951B2 · kind B2 · utility

1Cited by

3References

19Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Wolfgang Fehlmann · Stuttgart, DE
Juergen Frasch · Holzgerlingen, DE

Key dates

Filing date	Dec 10, 2002
Grant date	Oct 26, 2004
Priority date	—
Expiry date	Dec 10, 2022

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04C11/005
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A high-pressure fuel pump having at least one pump element is driven by a camshaft. An inside chamber of the pump housing, together with the cam-shaped portion of the camshaft and a blocking vane, forms a blocking-vane pump, which can act as a prefeed pump for the at least one pump element, whereby a prefeed pump can be integrated with the high-pressure fuel pump, which saves both production costs and installation space.

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