Patent · US Expired

Fuel system, method for operating the fuel system, computer program and control and/or regulating unit for controlling the fuel system

US6769414B2 · kind B2 · utility

12Cited by

6References

18Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Helmut Rembold · Stuttgart, DE
Jens Wolber · Gerlingen, DE
Uwe Mueller · Cleebronn, DE
Markus Amler · Rutesheim, DE

Key dates

Filing date	Feb 25, 2003
Grant date	Aug 3, 2004
Priority date	—
Expiry date	Feb 25, 2023

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M59/366
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fuel system serves to supply fuel to an internal combustion engine includes a reservoir and a first fuel pump whose input is connected to the reservoir and a second fuel pump whose input is connected to the first fuel pump. At least one injection valve is connected to the second fuel pump and can supply fuel at least indirectly to a combustion chamber. A leakage line is provided between the second fuel pump and the reservoir. In order to permit a reliable hot start of the engine with a simultaneously low strain on the components, the leakage line is provided with a valve device which has a shutoff function and a pressure relief function that are connected in parallel with each other.

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