US 12,458,913 B2
Multi-stage filtration system for fuel cell hybrid propulsion system
Richard J. Ancimer, Toronto (CA); Joseph P. Chandraraj, Columbus, IN (US); David P. Genter, Columbus, IN (US); Brian K. Landes, Seymour, IN (US); and Agneya Turlapati, Indianapolis, IN (US)
Assigned to Cummins Inc., Columbus, IN (US)
Filed by Cummins Inc., Columbus, IN (US)
Filed on Apr. 18, 2023, as Appl. No. 18/136,220.
Claims priority of provisional application 63/332,574, filed on Apr. 19, 2022.
Prior Publication US 2024/0157277 A1, May 16, 2024
Int. Cl. B01D 35/143 (2006.01); B01D 24/00 (2006.01); B01D 25/00 (2006.01); B01D 29/56 (2006.01); B01D 46/58 (2022.01); B01D 46/62 (2022.01); H01M 8/0662 (2016.01); B01D 46/00 (2022.01)
CPC B01D 35/1435 (2013.01) [B01D 24/008 (2013.01); B01D 25/006 (2013.01); B01D 25/007 (2013.01); B01D 46/62 (2022.01); H01M 8/0662 (2013.01); H01M 8/0687 (2013.01); B01D 46/0027 (2013.01); B01D 46/58 (2022.01); B01D 2253/102 (2013.01); B01D 2257/708 (2013.01); B01D 2265/023 (2013.01); B01D 2265/027 (2013.01); B01D 2311/246 (2013.01); Y02E 60/50 (2013.01)] 20 Claims
OG exemplary drawing
 
19. A system comprising:
a filtration assembly configured to be positioned upstream of a fuel cell assembly, the filtration assembly including a plurality of filter stages;
an air inlet positioned upstream of the filtration assembly, the air inlet is selectively closable or restrictable;
an onboard air storage configured to store an air supply and facilitate selectively providing the air supply to the filtration assembly or the fuel cell assembly;
a controller having programmed instructions to:
acquire air quality data regarding an air quality of air upcoming, proximate, or entering the air inlet;
close or restrict the air inlet in response to the air quality data indicating that the air upcoming, proximate, or entering the air inlet is of a quality lower than a quality threshold to prevent dirty ambient air from entering the filtration assembly;
activate the onboard air storage to provide the air supply to the filtration assembly or the fuel cell assembly when the air inlet is closed or restricted; and
provide power to an electric motor using a battery when the air inlet is closed or restricted and the onboard air storage is below a predefined threshold.