Fuel cell coolant temperature determination method

Details Fuel cell coolant temperature determination method Fuel cell coolant temperature determination method

2004-10-18

2008-11-25

Jiang, Chen-Wen (Department: 3744)

Automatic temperature and humidity regulation

Thermostatic

Expanding solid

C236S09300A, C236S034000, C374S187000

Reexamination Certificate

active

07455241

ABSTRACT:
A method of determining a temperature of a coolant in a coolant circulation system is disclosed. The coolant circulation system includes a coolant flow valve having a valve housing and an expansion element provided in the valve housing for controlling flow of the coolant through the valve housing. According to the method, an ohmic resistance of the expansion element is measured. The temperature of the coolant is determined by correlating the ohmic resistance of the expansion element with the temperature of the coolant.

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patent: 5135163 (1992-08-01), Cho
patent: 6101988 (2000-08-01), Evans
patent: 6569550 (2003-05-01), Khelifa
patent: 2004/0074894 (2004-04-01), Santanam

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