Operation control for a fuel feeding module with variable system pressure

US6412475B1 · kind B1 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Klaus Joos · Walheim, DE
• Jens Wolber · Gerlingen, DE
• Thomas Frenz · Nördlingen, DE
• Markus Amler · Rutesheim, DE
• Hansjoerg Bochum · Leinfelden, DE

Key dates

• Filing date: Aug 2, 2000
• Grant date: Jul 2, 2002
• Expiry date: Aug 14, 2020

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M37/025
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A fuel supply system for supplying an internal combustion engine has a consumption-controlled fuel feeding module which at a suction side is connected with a supply tank and at the pressure side is connected with an internal combustion engine. At pressure side of the fuel feeding module a return conduit is leads to at least one pump for filling of the fuel feeding aggregate. A preliminarily supplied return is blockable by a switchable adjusting member which adjusts the return quantity with an open switchable adjusting member by means of a throttle element in all operational conditions above a minimal pump consumption.