Abstract: A full-vehicle thermal model of a subject vehicle including a plurality of components can be generated. An experimental design includes input variables and output variables for each of the components under steady-state operating conditions. A meta-model is generated for each of the components based upon the input variables and the output variables. A time history including a time-based variation of the input variables is obtained for a plurality of drive cycles. A time history for a heat transfer coefficient and a film temperature for each of the components is determined based upon the meta-models for the components and the time histories for the plurality of input variables. The time histories for the heat transfer coefficient and the film temperature for the components are provide to a lumped-parameter thermal solver as time-varying boundary conditions, and a time-temperature profile for one of the components is determined employing the lumped-parameter thermal solver.

Abstract: A power steering waste heat recovery system for a vehicle and method of operating is disclosed. The system may include a power steering system and a waste heat absorption system. The power steering system may include a power steering pump, a liquid-to-liquid heat exchanger located downstream of the power steering pump and configured to allow power steering fluid flow therethrough, and a steering rack operatively engaging the heat exchanger to receive the power steering fluid therefrom. The waste heat absorption system may include an auxiliary heater loop configured to direct a liquid through the heat exchanger; and an automatically controllable heat control valve having an inlet, a first outlet for directing the liquid to bypass the auxiliary heater loop, and a second outlet for directing the liquid through the heat exchanger in the auxiliary heater loop.

Abstract: Methods, systems, and vehicles are provided for determining the sun's rays inside a vehicle. A communication device is configured to obtain information as to a current angle of the sun. A process is coupled to the communications device. The processor is configured to define a ray from a point of interest inside the vehicle toward the sun using the information and determine whether the ray intersects a transparent surface of the vehicle, for use in determining whether the point of interest is irradiated by rays of the sun if the ray intersects the transparent surface.

Abstract: Methods, systems, and vehicles are provided for determining the sun's rays inside a vehicle. A communication device is configured to obtain information as to a current angle of the sun. A process is coupled to the communications device. The processor is configured to define a ray from a point of interest inside the vehicle toward the sun using the information and determine whether the ray intersects a transparent surface of the vehicle, for use in determining whether the point of interest is irradiated by rays of the sun if the ray intersects the transparent surface.

Abstract: A power steering waste heat recovery system for a vehicle and method of operating is disclosed. The system may include a power steering system and a waste heat absorption system. The power steering system may include a power steering pump, a liquid-to-liquid heat exchanger located downstream of the power steering pump and configured to allow power steering fluid flow therethrough, and a steering rack operatively engaging the heat exchanger to receive the power steering fluid therefrom. The waste heat absorption system may include an auxiliary heater loop configured to direct a liquid through the heat exchanger; and an automatically controllable heat control valve having an inlet, a first outlet for directing the liquid to bypass the auxiliary heater loop, and a second outlet for directing the liquid through the heat exchanger in the auxiliary heater loop.