Abstract: An underbody cladding element includes a first air channelling region, a second air channelling region disposed at a rear end of the underbody cladding element, and a flow separation edge. The flow separation edge is disposed behind the second air channelling region in the longitudinal direction of the vehicle. An air flow channelled along the second air channelling region is detachable in a defined manner at the flow separation edge when the vehicle is travelling forward. A longitudinal region of the flow separation edge is configured unevenly in a first plane projected onto a second plane defined by a transverse direction of the vehicle and the longitudinal direction of the vehicle. The flow separation edge has a basic body which is curved downward in the vertical direction of the vehicle.

Abstract: An air deflection device of a motor vehicle includes an air deflection element and a displacement kinematic system. The air deflection element is displaceable by the displacement kinematic system from an extended deflection position, in which the air deflection element with a deflection surface in a front region of the air deflection element in a longitudinal direction of the motor vehicle diverts an airflow hitting the air deflection element in an underbody region in a forward direction of travel of the motor vehicle, into a retracted position. The air deflection element is displaceable by the displacement kinematic system rearwards in the longitudinal direction of the motor vehicle and upwards in a vertical direction of the motor vehicle and is pushable back in a direction of the retracted position in an event of an obstacle-related force component acting on the air deflection element in the longitudinal direction of the motor vehicle.

Abstract: An underbody cladding element includes a first air channelling region, a second air channelling region disposed at a rear end of the underbody cladding element, and a flow separation edge. The flow separation edge is disposed behind the second air channelling region in the longitudinal direction of the vehicle. An air flow channelled along the second air channelling region is detachable in a defined manner at the flow separation edge when the vehicle is travelling forward. A longitudinal region of the flow separation edge is configured unevenly in a first plane projected onto a second plane defined by a transverse direction of the vehicle and the longitudinal direction of the vehicle. The flow separation edge has a basic body which is curved downward in the vertical direction of the vehicle.

Abstract: An air deflection device of a motor vehicle includes an air deflection element and a displacement kinematic system. The air deflection element is displaceable by the displacement kinematic system from an extended deflection position, in which the air deflection element with a deflection surface in a front region of the air deflection element in a longitudinal direction of the motor vehicle diverts an airflow hitting the air deflection element in an underbody region in a forward direction of travel of the motor vehicle, into a retracted position. The air deflection element is displaceable by the displacement kinematic system rearwards in the longitudinal direction of the motor vehicle and upwards in a vertical direction of the motor vehicle and is pushable back in a direction of the retracted position in an event of an obstacle-related force component acting on the air deflection element in the longitudinal direction of the motor vehicle.