An air conduction device for a motor vehicle including an air conduction element and a movement device with adjustment kinematics. The air conduction element is movable relative to the remaining body as at least part of a tail side part of the vehicle body. The air conduction element moves between an inoperative position and at least one final operating position. The tail side part has a flow guiding area along which air flows which is designed to face an area surrounding the motor vehicle. The air conduction element has a surface which is at least part of the flow guiding area. The air conduction element is configured in its final operating position to lengthen the flow guiding area in the direction of a longitudinal body axis (X) of the body. The adjustment kinematics are configured in the form of multipoint joint kinematics.

A vehicle comprising means for attaching a cargo transporting member thereto, wherein the vehicle further comprises a wind deflector for deflecting wind from the cargo transporting member when being attached to the vehicle, wherein the wind deflector comprises two or more wind deflector portions which are configured to deflect wind when the vehicle is travelling in a travelling direction, wherein the wind deflector is configured to be expanded into at least a first wind deflecting state and collapsed into a collapsed state, wherein the two or more wind deflector portions are configured to be pivoted relative each other with respect to a common rotational axis so that the wind deflector is expanded and collapsed between the first wind deflecting state and the collapsed state.

A vehicle has a spoiler fastened to an outer skin component of the vehicle. For this purpose, clip elements are provided on the outer skin component and are in engagement with corresponding mating clip elements of the spoiler. The clip elements have an end stop in a z-direction, which is oriented transversely to the surface of the outer skin component. Between the spoiler and the outer skin component there is an intermediate element, which is elastically compressed in the z-direction and presses the spoiler against the end stop. A method is provided for mounting the spoiler on the vehicle.

A vehicle has a spoiler fastened to an outer skin component of the vehicle. For this purpose, clip elements are provided on the outer skin component and are in engagement with corresponding mating clip elements of the spoiler. The clip elements have an end stop in a z-direction, which is oriented transversely to the surface of the outer skin component. Between the spoiler and the outer skin component there is an intermediate element, which is elastically compressed in the z-direction and presses the spoiler against the end stop. A method is provided for mounting the spoiler on the vehicle.

Various embodiments are directed to an air jet shield. The air jet shield may include a support frame configured to attach to a vehicle utilizing a set of security straps. Sets of V-shaped and concave air ducts may be horizontally and vertically coupled to the support frame, respectively. Each of the air ducts may have a decreasing cross-sectional area and include (i) an inlet that receives air from a surrounding environment during a travel of the vehicle into a headwind or crosswind and (ii) an outlet that dispenses the air received from the inlet as a free air jet. Upon entering a headwind or crosswind, the free air jet creates a wind shear causing rotation at an increased velocity. Within the free air jet and surrounding the vehicle, static air pressure and wind velocity is decreased, thereby causing a reduction in aerodynamic drag during travel.

Described herein are aerodynamically enhanced sensor housings. An aerodynamically enhanced sensor housing has an asymmetrical lateral cross-section that includes a first portion having a substantially spherical curvature and a second portion having a non-spherical curvature. The second portion having the non-spherical curvature may be elongated in relation to the first portion. An aerodynamically enhanced housing can also include one or more indentations formed in an exterior surface thereof to further enhance drag reducing characteristics of the housing. In addition, air flow characteristics around the sensor housing during vehicle operation can be assessed and a drag reduction protocol can be generated and implemented to further enhanced the drag reducing characteristics of the sensor housing.

Described herein are aerodynamically enhanced sensor housings. An aerodynamically enhanced sensor housing has an asymmetrical lateral cross-section that includes a first portion having a substantially spherical curvature and a second portion having a non-spherical curvature. The second portion having the non-spherical curvature may be elongated in relation to the first portion. An aerodynamically enhanced housing can also include one or more indentations formed in an exterior surface thereof to further enhance drag reducing characteristics of the housing. In addition, air flow characteristics around the sensor housing during vehicle operation can be assessed and a drag reduction protocol can be generated and implemented to further enhanced the drag reducing characteristics of the sensor housing.

An airflow adjusting apparatus to be provided in a vehicle includes a flap and an airflow generator. The vehicle includes a wheel disposed to be partly protruded downward from a vehicle body of the vehicle. The flap is protruded, in front of the wheel, downward from the vehicle body. The airflow generator is provided in an underneath of the vehicle body and vehicle-widthwise inwardly from the wheel. The airflow generator is configured to generate an airflow vehicle-widthwise inward, and backward of the vehicle. The airflow moves obliquely relative to a vehicle longitudinal direction when the vehicle travels forward.

Systems and methods are described herein to implement transverse momentum injection at low frequencies to directly modify large-scale eddies in a turbulent boundary layer on a surface of an object. A set of transverse momentum injection actuators may be positioned on the surface of the object to affect large-scale eddies in the turbulent boundary layer. The system may include a controller to selectively actuate the transverse momentum injection actuators with an actuation pattern to affect the large-scale eddies to modify the drag of the fluid flow on the surface. In various embodiments, the transverse momentum injection actuators may be operated at frequencies less than 10,000 Hertz.

Vertical bars extend downwardly from the structural siderails of a trailer frame to a guard bar extending parallel to the longitudinal axis of the trailer, thus forming a side underride guard. Two side underride guards are fixed to the structural siderails of the trailer. The guard bars are located vertically below the bed of the trailer to have an effective ground clearance of twenty-seven inches. Lateral bracing of each guard bar extends from the guard bar to the structural siderail across the trailer. Bracing at the trailing end of the side underride guards employs a K-brace to provide an air brake hose non-chafing zone. The K-brace is displaced from the trailer bed.