US Patent:
20100178578, Jul 15, 2010
Inventors:
Milos Milacic - New Boston MI, US
Falko Berg - Canton MI, US
Jordan John Masters - Schafhof, DE
Suriyaprakash Ayyangar Janarthanam - Westland MI, US
Assignee:
FORD MOTOR COMPANY - Dearborn MI
International Classification:
H01M 8/04
Abstract:
In at least one embodiment, a purge system for a fuel cell stack is provided. The system comprises a blower, a differential pressure sensor and a purge valve. The blower delivers a recirculated gas back to the stack at varying electrical power levels and blower speeds. The differential pressure sensor senses pressure of the recirculated gas across the blower. The purge valve purges the recirculated gas based on at least one of a blower power level, a blower speed, and the pressure of the recirculated gas.