Kevin C Keene

US Patent:

7377237, May 27, 2008

Filed:

Sep 13, 2006

Appl. No.:

11/520260

Inventors:

Allen B. Carney - Vadnain Heights MN, US
John C. Hughes - Andover MN, US
Kevin J. Keene - Coon Rapids MN, US
Deborah A. Klinkert - Plymouth MN, US
Bradley D. Padget - Richfield MN, US

Assignee:

Cummins Power Generation Inc. - Minneapolis MN

International Classification:

F01P 1/06

US Classification:

123 4131, 123 4112, 123 4149

Abstract:

A cooling system for a hybrid power system that includes an engine employs an engine cooling circuit to deliver coolant to the engine, the engine cooling circuit including a radiator and a main fan to draw air through the radiator. When the hybrid power system further includes an inverter, then the inverter is cooled via an inverter cooling circuit that is formulated as one portion of the cooling system to deliver coolant to the inverter, the inverter cooling circuit including a heat exchanger located such that the main fan draws air through the heat exchanger when the main fan is active. The cooling system also includes a secondary fan to selectively draw air though the heat exchanger during operation of an inverter cooling circuit coolant pump.

US Patent:

20080060370, Mar 13, 2008

Filed:

Sep 13, 2006

Appl. No.:

11/520461

Inventors:

Kevin J. Keene - Coon Rapids MN, US
Mitchell E. Peterson - Maple Grove MN, US

Assignee:

Cummins Power Generation Inc. - Minneapolis MN

International Classification:

F25B 27/00
B60H 1/32
F25D 23/12
F25B 31/00

US Classification:

62236, 62505, 622592, 62239

Abstract:

A method of controlling a cooling system is provided for a hybrid power system that includes an engine that employs an engine cooling circuit to deliver coolant to the engine, the engine cooling circuit including a radiator and a main fan to draw air through the radiator. When the hybrid power system further includes an inverter, then the inverter is cooled via an inverter cooling circuit that is formulated as one portion of the cooling system to deliver coolant to the inverter, the inverter cooling circuit including a heat exchanger located such that the main fan draws air through the heat exchanger when the main fan is active. The cooling system also includes a secondary fan to selectively draw air though the heat exchanger during operation of an inverter cooling circuit coolant pump.