Method and apparatus for venting and purging of a fuel cell

Details Method and apparatus for venting and purging of a fuel cell Method and apparatus for venting and purging of a fuel cell

2006-11-07

2006-11-07

Kalafut, Stephen J. (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

C429S006000

Reexamination Certificate

active

07132181

ABSTRACT:
Hydrogen in a fuel cell is vented and purged with a fail-closed valve using stored energy (e.g. from a capacitor) when a diagnostic parameter is outside of an acceptable operating range. The valve closes after the stored energy has depleted. A safety switch in the relay circuit of the solenoid switch (or solenoid valve) is also grounded in computer-implemented shutdowns. Benefits from the invention include use of air-compatible catalysts, minimized parasitic losses to power output, minimized contamination of fuel cell internal surfaces after venting, minimized risk of explosive mixture buildup, and efficient operation.

REFERENCES:
patent: 5870914 (1999-02-01), Dawson
patent: 6395414 (2002-05-01), Clingerman et al.
patent: 6727012 (2004-04-01), Chen et al.
patent: 6828048 (2004-12-01), Margiott et al.
patent: 6887606 (2005-05-01), Parr et al.
patent: 2003/0072978 (2003-04-01), Meyer et al.
patent: 2005/0074660 (2005-04-01), Linder et al.

Affiliated with

Also associated with

Rating

Method and apparatus for venting and purging of a fuel cell does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for venting and purging of a fuel cell, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for venting and purging of a fuel cell will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3652363