Piston pump, particularly a high-pressure fuel pump for an internal combustion engine

US11168677B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Siamend Flo · Stuttgart, DE
• Oliver Albrecht · Bietigheim-Bissingen, DE
• Frank Nitsche · Kornwestheim, DE
• Olaf Schoenrock · Schwieberdingen, DE
• Jurij Giesler · Ditzingen, DE
• Andreas Plisch · Erbach, DE
• Dietmar Uhlenbrock · Stuttgart, DE
• Ekrem Cakir · Oberriexingen, DE

Key dates

• Filing date: Jun 7, 2018
• Grant date: Nov 9, 2021
• Expiry date: Jun 26, 2038

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M59/442
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A piston pump, in particular high-pressure fuel pump for an internal combustion engine, includes a pump housing, a pump piston and a conveying chamber defined at least by the pump piston and the pump housing. A seal for sealing the conveying chamber and a separate guide element for guiding the pump piston may be arranged between the pump piston and the pump housing. The seal is designed as a metal sleeve, and may have a radially outwardly projecting web.