The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 08, 2012
Filed:
May. 26, 2011
Arnold R. Miller, Lakewood, CO (US);
Kris S. Hess, Westminster, CO (US);
Timothy L. Erickson, Parker, CO (US);
James L. Dippo, Arvada, CO (US);
Arnold R. Miller, Lakewood, CO (US);
Kris S. Hess, Westminster, CO (US);
Timothy L. Erickson, Parker, CO (US);
James L. Dippo, Arvada, CO (US);
BNSF Railway Company, Fort Worth, TX (US);
Abstract
A cooling system for a hydrogen hybrid locomotive including a set of electric traction motors and a hydrogen fuel cell system for providing electric power for driving the traction motors. The cooling system includes a radiator for extracting heat from cooling fluid circulated through the hydrogen fuel cell system and a circulation system. The circulation system has a pump for moving the cooling fluid through the circulation system, a first circulation path including a radiator output valve for controlling a selected amount of the cooling fluid provided by the pump to a cooling fluid inlet of the hydrogen fuel cell system through the radiator, and a second circulation path including a bypass valve for bypassing a selected amount of the cooling fluid provided by the pump around the radiator and to the cooling fluid inlet of the hydrogen fuel cell system. A fan system provides air flow across the radiator. A control system selectively sets a position of the radiator output valve and a position of the bypass valve such that the cooling fluid provided by the first and second circulation paths maintains a selected approximate temperature at the cooling inlet of the hydrogen fuel cell system and selectively controls a speed of the fan to control cooling of the hydrogen fuel cell system.