Abstract: A system and method for controlling an active grille shutter system for a vehicle upon startup of an associated engine includes determining if flaps of the AGS system are in a closed position upon cold-startup of the vehicle; moving the flaps to the closed position if it is determined that the flaps are not in the closed position upon cold-startup of the vehicle; and maintaining the flaps in the closed position until an engine coolant temperature (ECT) reaches a predetermined temperature that initially overshoots a predetermined continuous ECT target associated with steady-state operation of the engine. The initial overshoot of the ECT during cold-startup is configured to rapidly raise an engine oil temperature (EOT) to a predetermined continuous EOT target thereby reducing viscosity of the engine oil during cold-startup operation and increasing fuel efficiency of the vehicle.

Abstract: A system and method for controlling an active grille shutter system for a vehicle upon startup of an associated engine includes determining if flaps of the AGS system are in a closed position upon cold-startup of the vehicle; moving the flaps to the closed position if it is determined that the flaps are not in the closed position upon cold-startup of the vehicle; and maintaining the flaps in the closed position until an engine coolant temperature (ECT) reaches a predetermined temperature that initially overshoots a predetermined continuous ECT target associated with steady-state operation of the engine. The initial overshoot of the ECT during cold-startup is configured to rapidly raise an engine oil temperature (EOT) to a predetermined continuous EOT target thereby reducing viscosity of the engine oil during cold-startup operation and increasing fuel efficiency of the vehicle.

Abstract: A duct for a vehicle includes an inlet fluidly coupled to an interior of the vehicle and an outlet fluidly coupled to the inlet. A buoyant closure member is disposed between the inlet and the outlet and is movable between an open position permitting flow between the inlet and the outlet and a closed position preventing flow between the inlet and the outlet. The buoyant closure member is normally in the open position and is movable from the open position to the closed position in response to a predetermined volume of water entering the outlet.

Abstract: A thermal management system for vehicles includes a refrigerant circuit containing at least one evaporator for providing conditioned air to a passenger compartment of the vehicle. A coolant circuit circulates coolant to cool an electric power source and high voltage electronics powered by the electric power source. A heat exchanger communicated with the refrigerant circuit and the coolant circuit transfers heat from the coolant to the refrigerant in the refrigerant circuit.