Piston pump for delivering a fluid, and associated brake system

US8845038B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Josef Hipp · Seeg, DE
• Beate Schumann · Brackenheim, DE
• Horst Beling · Heilbronn, DE
• Marc Zimmermann · Sonthofen, DE
• Stefan Hallermann · Kempten, DE

Key dates

• Filing date: Sep 18, 2008
• Grant date: Sep 30, 2014
• Expiry date: Jul 3, 2030

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04B1/0452
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A piston pump includes a piston assembly which has a first piston element, a second piston element, and at least one transverse bore which corresponds to a longitudinal bore. The piston pump further includes a cylinder in which the piston assembly is guided in a longitudinally movable manner, and an inlet valve which includes a cage element, in which an inlet valve spring and sealing element are arranged, and a corresponding inlet valve seat which is arranged on the piston assembly. The inlet valve sealing element can be pressed sealingly into the corresponding inlet valve seat by means of a restoring spring in order to close off the longitudinal bore. The second piston element is configured as a sleeve made of a wear-resistant material, which accommodates axially acting power components. The inlet valve seat is disposed on a bending edge of the second piston element configured as a sleeve. The at least one transverse bore corresponding to the longitudinal bore is placed in the second piston element. The invention further relates to an associated braking system.