Magnet pump for an auxiliary assembly of a vehicle, and method for controlling a magnet pump for an auxiliary assembly

US10151307B2 · kind B2 · utility

Assignee

• PIERBURG GMBH · DE

Inventors

• Andres Toennesmann · Aachen, DE
• Matthias Baden · Krefeld, DE
• Costantino Brunetti · Freudenberg, DE
• Michael Sanders · Grand Rapids, US
• Andreas Koester · Essen, DE

Key dates

• Filing date: Aug 12, 2014
• Grant date: Dec 11, 2018
• Expiry date: Apr 30, 2035

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04B53/14
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A magnet pump for an auxiliary unit of a vehicle includes an inlet, an outlet, an electromagnet comprising an armature, a core, a coil and a yoke, a cylinder comprising an outlet opening, and an axial piston which moves in the cylinder. The axial piston includes first and second axial piston parts, a gap arranged between the first and second axial piston parts, and an axial through bore. A first non-return valve is biased between the first and second axial piston parts and against the axial piston. A second non-return valve is biased against the outlet opening of the cylinder. The first axial piston part is connected with/is integrally formed with the armature and is lifted off the second axial piston part. A fluidic connection exists between the inlet and the outlet via the gap when the first axial piston part is lifted off the second axial piston part.