Piston fuel pump for an internal combustion engine

US10288025B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Jochen Kaesser · Winnenden, DE
• Bernd Beiermeister · Steinheim an der Murr, DE
• Soeren Stritzel · Rayong, TH
• Wolfgang Ochs · Bornsteiner Straße, DE
• Ralf Assmann · Waldbronn, DE
• Heiko Jahn · Tamm, DE
• Christian Preissner · Nuremberg, DE
• Achim Laub · Waiblingen, DE
• Peter Ropertz · Oberriexingen, DE
• Stefen Zaensch · Stein, DE

Key dates

• Filing date: Dec 4, 2015
• Grant date: May 14, 2019
• Expiry date: Jan 21, 2036

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M2200/9015
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A piston fuel pump for an internal combustion engine includes a pump cylinder, a pump piston, and a seal. The pump piston is configured to be moved axially in the pump cylinder, wherein a working chamber is delimited by the pump piston. The seal is disposed on the pump piston and seals off the working chamber from a low-pressure region. The seal seals off an end section of the pump piston adjacent to the working chamber from the working chamber.