CONTROL SYSTEM FOR DISPLACING POOLED MOLECULAR HYDROGEN IN A FUEL CELL VEHICLE

A control system for a vehicle including a fuel cell system includes at least one of a cooling fan and an aerodynamic device configured to selectively increase airflow under a hood of the vehicle. A thermal management controller is configured to control the at least one of the cooling fan and the aerodynamic device in response to a sensed temperature of a coolant of a coolant system of the vehicle. A sensor is configured to sense a concentration of molecular hydrogen under the hood of the vehicle. A molecular hydrogen airflow controller is configured to selectively request additional airflow from the thermal management controller using the at least one of the cooling fan and the aerodynamic device in response to the sensed concentration of the molecular hydrogen under the hood of the vehicle being greater than a predetermined concentration.