US 12,469,866 B2
Integrated noise attenuating volume for fuel cell system
Joseph Hahn, White Lake Township, MI (US); and Scott May, Daytona Beach, FL (US)
Assigned to GM Global Technology Operations LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Feb. 1, 2023, as Appl. No. 18/162,797.
Prior Publication US 2024/0258543 A1, Aug. 1, 2024
Int. Cl. H01M 8/04746 (2016.01); H01M 8/04701 (2016.01)
CPC H01M 8/04753 (2013.01) [H01M 8/04708 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A multi-function fuel delivery system, comprising:
a hydrogen (H2) heat exchanger configured to (i) receive cold H2, and (ii) perform an H2 fuel heating/cooling function on the cold H2;
an H2 fuel manifold configured to (i) receive a heated H2 fuel after the cold H2 has been heated by the H2 heat exchanger, and (ii) perform an H2 noise-attenuating function on the heated H2 to reduce noise; and
an upper fuel rail (UFR) configured to (i) receive, as noise-attenuated H2, the heated H2 that is noise-attenuated by the H2 fuel manifold, and (ii) provide the noise-attenuated H2 simultaneously to a plurality of injectors,
wherein the H2 fuel manifold and the UFR are housed in a single chamber.