High-pressure fuel pump for a fuel system for an internal combustion engine

US10393081B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Gerd Teike · Ditzingen, DE
• Michael Kleindl · Schwieberdingen, DE

Key dates

• Filing date: Sep 10, 2015
• Grant date: Aug 27, 2019
• Expiry date: May 12, 2036

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16K17/042
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A high-pressure fuel pump for a fuel delivery system of an internal combustion engine includes a pressure limiting valve positioned between an outlet and an inlet of the pump. The valve includes a spring-loaded closing element and a closing body that radially holds the closing element in place, and that has a concave receiving portion configured to at least partially receive the closing element. The receiving portion has a radially outer first area with a first opening angle, and a radially inner second area with a second opening angle larger than the first opening angle. The first area and the second area are located outside of a contact region between the closing element and the closing body.