Abstract: A vehicle includes an electric motor, a fuel cell, and a fuel cell thermal management system. A control system of the vehicle is configured to operate the fuel cell and the fuel cell thermal management system according to different modes. The modes include an acoustic signature mode in which an acoustic signature of the vehicle is reduced, a thermal signature mode in which a thermal signature of the vehicle is reduced, an acoustic and thermal signature mode in which both the acoustic signature and the thermal signature of the vehicle are reduced, a mission mode in which the vehicle is a node of a mesh network of other vehicles, and an optimized efficiency mode in which the fuel cell and the fuel cell thermal management system are controlled based on ambient conditions.

Abstract: A power conversion unit can include a housing, a first converter module, and a second converter module. The housing can define a shape of the power conversion unit, provide a first slot to receive the first converter module, provide a second slot to receive the second converter module. The first converter module can electrically couple with a first power source, and the first converter module can establish a first bi-directional flow of electrical power between a voltage bus of the power conversion unit and the first power source. The second converter module can electrically couple with a second power source, and establish a second bi-directional flow of electrical power between the voltage bus of the power conversion unit and the second power source.

Abstract: A suspension system for a vehicle includes a plurality of air spring assemblies, each having an air spring, and a suspension position sensor; and a controller. The controller is programmed to determine corner forces associated with each air spring of the plurality of air spring assemblies based on a pressure provided by a pressure sensor and an effective area of each air spring of the plurality of air spring assemblies based on a total length provided by the suspension position sensor, according to a target total length of each air spring.

Abstract: A suspension system for a vehicle includes a plurality of air spring assemblies, each having an air spring, and a suspension position sensor; and a controller. The controller is programmed to determine corner forces associated with each air spring of the plurality of air spring assemblies based on a pressure provided by a pressure sensor and an effective area of each air spring of the plurality of air spring assemblies based on a total length provided by the suspension position sensor, according to a target total length of each air spring.