Pump device for a brake system with a reluctance drive

US10683857B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Guenter Escher · Oberstdorf, DE
• Gerhard Stransky · Immenstadt im Allgäu, DE
• Ben Ferguson · Knoxville, US
• Dietmar Kratzer · Tamm, DE
• Franz Mayer · Birkenfeld, DE
• Michael Specker · Blaichach, DE
• Stefan Achilles · Immenstadt im Allgäu, DE
• Bernd Lutz · Überlingen, DE
• Alice Schacherl · Bürgberg, DE
• Anton Paweletz · Fellbach, DE
• Hermann Bamberger · Immenstadt im Allgäu, DE
• Roland Heller · Kornwestheim, DE

Key dates

• Filing date: Apr 18, 2016
• Grant date: Jun 16, 2020
• Expiry date: Nov 26, 2036

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02K33/02
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A pump device, in particular for a brake system of a motor vehicle, includes two hydraulic chambers, a linear drive, and a pump piston. Each of the chambers has at least two fluid connections. The pump piston interacts with the chambers. The linear drive is embodied as a reluctance drive and includes a longitudinally movable armature, a housing-fastened stator that is configured to receive current, and at least one spring element. The at least one spring element is associated with the armature, and is configured to counteract a drive force of the reluctance drive. The armature is connected to the pump piston.