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

Claim 7:
8. A method of monitoring and controlling hydrogen emission concentrations of a fuel cell engine in a vehicle and/or a powertrain, the method comprising:
setting a purge delay time and/or width time of a purge valve,
calculating a volume of purged hydrogen configured to pass through the purge valve,
determining an amount of purged air that is passed into the fuel cell engine by an air handling device,
mixing the purged air and the purged hydrogen in an exhaust mixer to form an exhaust,
monitoring a volume of the purged hydrogen in the exhaust using a hydrogen concentration sensor,
changing a speed of the air handling device or the purge valve when the hydrogen concentration sensor detects a difference between the monitored volume of the purged hydrogen and a target hydrogen concentration, and releasing the exhaust from the exhaust mixer.