Control arrangement for a mechanically controllable coolant pump of an internal combustion engine

US11181112B2 · kind B2 · utility

Assignee

• PIERBURG GMBH · DE

Inventors

• Stephan Zielberg · Bochum, DE
• Michael-Thomas Benra · Castrop-Rauxel, DE
• Michael Sanders · Grand Rapids, US
• STEFAN ROTHGANG · Rheinberg, DE
• Andreas Burger · Krefeld, DE
• Sven Nigrin · Goldkronach, DE

Key dates

• Filing date: Oct 19, 2016
• Grant date: Nov 23, 2021
• Expiry date: Oct 22, 2037

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F05D2270/64
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A control arrangement for a coolant pump of an internal combustion engine includes a control slide which controls a throughflow cross-section of an annular gap arranged between an outlet of a coolant pump impeller and a surrounding delivery duct. A control pump adapts a hydraulic pressure generated in a flow duct. An electromagnetic valve includes a first and second valve seat, a first, second and third flow connection, a closing member and an armature. The first flow connection is fluidically connected to an outlet of the control pump. The second flow connection is fluidically connected to a first pressure chamber of the control slide. The third flow connection is fluidically connected to an inlet of the coolant pump. The first valve seat is arranged between the first flow connection and the second flow connection. The second valve seat is arranged between the second flow connection and the third flow connection.