Electrically driven coolant pump for an internal combustion engine

US5785013A · kind A · utility

Assignee

• PIERBURG GMBH · DE

Inventors

• Walther Sinn · Anrath, DE
• Frank Langner · Würselen, DE
• Wolfgang Weller · Winnenden, DE
• Wolfgang Zacher · Dobbeln, DE
• Jens Teubel · Hartha, DE
• Ronald Rathke · Döbeln, DE

Key dates

• Filing date: Dec 5, 1996
• Grant date: Jul 28, 1998
• Expiry date: Dec 5, 2016

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01P2060/18
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A pump-motor unit for pumping a coolant for cooling an internal combustion engine in which a centrifugal pump is connected to an electrically commutated d.c. motor to be driven thereby. A power electronic circuit is mounted on a plate and installed in the unit in connection with the d.c. motor to operate the motor in accordance with signals delivered to said power electronic circuit from an external power source. A cooling body is supported in the unit to cool the power electronic circuit by transferring heat from the power electronic circuit to the coolant. The centrifugal pump and the d.c. motor are interconnected through the cooling body.