Abstract: A system may include a computer to obtain orientation information of a determined travel route for a vehicle system that includes a first power source and a second power source. The computer may determine one or more energy requirements of a hybrid propulsion system based on the orientation information. The computer may generate a trip plan to control a performance parameter(s) of a hybrid propulsion system and control a stable low temperature combustion. The computer may select at least one of the first power source or the second power source to deliver the one or more energy requirements. A method may include obtaining the orientation information, determining the one or more energy requirements, generating the trip plan, and selecting at least one of the first power source or the second power source. A vehicle system may include a hybrid power source, an electric motor(s), and a computer.

Abstract: A system and method for controlling a hybrid propulsion system. The system includes a computer programmed to obtain altitude and terrain information associated with a predetermined route for the hybrid propulsion system comprising a first energy source and a second energy source. The computer is also programmed to determine a power requirement and a torque requirement associated with the altitude and the terrain along the the predetermined route of the hybrid propulsion system, generate a trip plan to control at least one of a plurality of performance parameters and enable a stable low temperature combustion conditions in the hybrid propulsion system, as the hybrid propulsion system travels along the predetermined route. The computer is further programmed to preferentially select at least one of: the first energy source and the second energy source based on the trip plan to deliver at least one of: the power requirement and the torque requirement of the hybrid propulsion system.