Device for delivering fuel from a fuel tank to the internal combustion engine of a motor vehicle

US5564397A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Stephan Kleppner · Bretten, DE
• Kurt Frank · Schorndorf, DE
• Ansgar Seitz · Bad Liebenzell, DE
• Hannelore Scheerer · Heubach, DE
• Guenter-Paul Ballier · Oberriexingen, DE
• Rolf Fischerkeller · White Lake, US
• Wolfgang Wuerl · Sachsenheim, DE

Key dates

• Filing date: May 19, 1995
• Grant date: Oct 15, 1996
• Expiry date: May 19, 2015

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M37/106
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

Arranged in the fuel tank is a reservoir into which fuel is pumped by a jet pump connected to a return line from the internal combustion engine. The jet pump has a jet nozzle which is arranged in a holder formed on the reservoir. Between its inlet opening and the propulsion-nozzle opening, the jet nozzle has a bypass opening which is connected to a stub projecting into the reservoir. At its end, the stub is provided with a seat which can be closed by a closing element. Arranged in the reservoir is a leaf spring which is fixed at one end and which presses the closing element onto the seat. Together with the closing element, the bypass opening forms a bypass valve which allows fuel to flow out of the jet nozzle if a certain pressure is exceeded.