Patent ID: 11962047
Assignee: CUMMINS INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 18:
19. A control system for monitoring and controlling emissions produced by a fuel cell engine in a vehicle and/or a powertrain, the system comprising:
an exhaust mixer configured to mix purged hydrogen from the fuel cell engine with air before being released;
a purge value configured to control a flow of the purged hydrogen from the fuel cell engine to the exhaust mixer;
a hydrogen concentration sensor configured to minitor a concentration of the purged hydrogen in the exhaust mixer;

an air handling device configured to direct the air into the fuel cell engine;
a back pressure valve configured to control a flow of the air from the fuel cell engine into the exhaust mixer; and
a controller configured to adjust one or more of a speed of the air handling device, the purge valve, or the back pressure valve in response to the monitored concentration of purged hydrogen by the hydrogen concentration sensor when different than a target hydrogen concentration, wherein in response to the hydrogen concentration sensor detecting the concentration of purged hydrogen to be less than the target hydrogen concentration, the controller is configured to decrease the speed of the air handling device, adjust an opening of the back pressure valve, adjust a purge delay time, or adjust a width time of the purge valve to increase a volume of purged hydrogen being passed through the purge valve.