Abstract: A fuel cell APU system comprising a plurality of fuel cell modules connected in parallel. Each module includes a local controller connected to a master controller that coordinates the modules to achieve a desired power output at any given time. Each module is operated within an output range to maximize efficiency of the system. When load demand on a first module exceeds the desired output range of the module, an additional module is brought online in parallel with the first. As the load increases further, additional modules are brought online in cascade fashion to permit all modules to be operated efficiently. If a module is disabled, it is automatically switched out of service and replaced by a standby module. The master controller keeps track of the total operating time of each module and varies the sequence in which different modules are brought into service to balance deterioration among the modules.

Abstract: A fuel cell APU system comprising a plurality of fuel cell modules connected in parallel. Each module includes a local controller connected to a master controller that coordinates the modules to achieve a desired power output at any given time. Each module is operated within an output range to maximize efficiency of the system. When load demand on a first module exceeds the desired output range of the module, an additional module is brought online in parallel with the first. As the load increases further, additional modules are brought online in cascade fashion to permit all modules to be operated efficiently. If a module is disabled, it is automatically switched out of service and replaced by a standby module. The master controller keeps track of the total operating time of each module and varies the sequence in which different modules are brought into service to balance deterioration among the modules.

Abstract: A diverter valve is disclosed and may comprise an actively cooled valve actuation section, an actuator, and a valve section comprising a rotationally actuated valve plate that is structured to be rotationally actuated by the actuator to direct flow wherein the actuation section may be thermally insulated from the valve actuation section.

Abstract: A diverter valve is disclosed and may comprise an actively cooled valve actuation section, an actuator, and a valve section comprising a rotationally actuated valve plate that is structured to be rotationally actuated by the actuator to direct flow wherein the actuation section may be thermally insulated from the valve actuation section.

Abstract: A diverter valve is disclosed and may comprise an actively cooled valve actuation section, an actuator, and a valve section comprising a rotationally actuated valve plate that is structured to be rotationally actuated by the actuator to direct flow wherein the actuation section may be thermally insulated from the valve actuation section.

Abstract: A tool for aligning a stator with respect to a crankshaft of a hybrid vehicle is provided. The tool comprises a central hub, a plurality of alignment members, and an actuating device. The central hub has a mating surface configured to secure the central hub to the crankshaft. The alignment members are configured to engage the stator and are slideably mated with the central hub for movement between a first position and a second position. The actuating device moves the plurality of alignment members between the first and second positions. The second position is further away from the crankshaft than the first position. The stator is moved to an aligned position with respect to the crankshaft when the aligning members are at the second position.

Abstract: A tool for aligning a stator with respect to a crankshaft of a hybrid vehicle is provided. The tool comprises a central hub, a plurality of alignment members, and an actuating device. The central hub has a mating surface configured to secure the central hub to the crankshaft. The alignment members are configured to engage the stator and are slideably mated with the central hub for movement between a first position and a second position. The actuating device moves the plurality of alignment members between the first and second positions. The second position is further away from the crankshaft than the first position. The stator is moved to an aligned position with respect to the crankshaft when the aligning members are at the second position.