An air guide for a vehicle having a pair of side members. The air guide includes a base member having a pair of opposing ends and a pair of attachment members configured to be coupled to the pair of side members. Each of the pair of attachment members are coupled to a respective opposing end of the base member for movement between a folded position, an unfolded position, and an attachment position between the folded position and the unfolded position.

The aerodynamic skirt assembly for attachment to a trailer may comprise a side skirt fairing, a rear skirt fairing, and a secondary treatment. The side skirt fairing may comprise an inner surface and an outer surface. The rear skirt fairing may comprise an inner surface and an outer surface and located aft of the side skirt fairing. The secondary treatment may be coupled to the outer surface of the rear skirt fairing, wherein the secondary treatment is canted outwardly at an angle from the outer surface of the skirt fairing and configured to redirect the air around the at least one rear wheel assembly.

An airflow adjusting apparatus to be installed in a vehicle includes two or more outward airflow generators and a controller. The outward airflow generators are disposed side by side in a vehicle front-rear direction in vicinity of an outer edge in a vehicle widthwise direction on an upper surface of a vehicle body on a front side of a windshield. The outward airflow generators are each configured to form an outward airflow with respect to the vehicle body. The outward airflow flows in a direction that is toward an outer side in the vehicle widthwise direction and toward a rear side of the vehicle. The controller is configured to control the outward airflow generators.

An inwardly disposed vehicle skirt panel assembly disposed laterally inset toward the longitudinal centerline of the vehicle. The vehicle skirt panel assembly is suspended underneath a rearward body component of a truck or semitrailer, extending forwards in front of a rearward wheel assembly. The vehicle skirt panel assembly stabilizes otherwise laterally displaced air passing under the central portion of the moving vehicle, further increasing the effective air pressure developed immediately behind the vehicle. Maintaining air generally static while passing under the vehicle increases the effective pressure developed immediately behind the vehicle to reduce drag thereon.

A passively activated flow control device including a valve body configured to be mounted in a vehicle. The valve body includes an inlet and an outlet. A valve member is arranged at the valve body for selectively opening and closing flow between the inlet and the outlet. The valve member is responsive to acceleration induced forces on the vehicle to shift from one of an open configuration and a closed configuration toward the other of the open configuration and the closed configuration.

In a vehicle air guide path structure, a vertically long air guide path forming member is provided along an outer edge of a side surface portion of a vehicle body on a rear side of a wheel house. A vertically long air guide path is formed at the rear side of the wheel house. The vertically long air guide path suctions air from the wheel house and exhausts air along a side surface of the vehicle body. A partition member partitions the vertically long air guide path so as to form a plurality of sections in an upper-lower direction. A vertically long inclined surface is formed on the side surface portion of the vehicle body at a rear side of the vertically long air guide path. The partition member protrudes to a rear side from the vertically long air guide path.

An inner wheel skirt panel centrally located under the body of a vehicle reduces overall vehicle drag by inhibiting air from otherwise being displaced laterally inward by the passing wheels of the moving vehicle. Maintaining air to remain generally static while passing under the vehicle through the central open-space between the wheels increases the effective air pressure developed immediately behind the vehicle to reduce overall drag developed between the front and rear of the vehicle.

A motor vehicle side spoiler arrangement with a spoiler blade which can be moved in a motorized manner between a retracted rest position and a laterally extended spoiler position. A spoiler shell is fixed on the vehicle and provided with a shell rear wall, a guide mechanism which guides the spoiler blade in the longitudinal direction, and an actuating motor. A sliding seal lip is provided between the spoiler blade and the shell rear wall, which sliding seal lip closes a front-side gap (S) between the spoiler blade and the shell rear wall in the spoiler position of the spoiler blade.

An active side panel assembly having at least one deployable panel (22) and at least one actuator (30). The deployable panel deploys and retracts based on vehicle requirements and provides valueable reduction in vehicle drag, thereby reducing emissions and improving fuel economy. Additionally, it allows for the system to retract so the vehicle can still meet ground clearances, ramp angles, off-road requirements, etc. The active side panel provides a fully deployable system with object detection, declutching of the actuator to help prevent damage, and communication with the vehicle to determine proper deployment and function.

A mudflap-integrated aerodynamic member for improving aerodynamic characteristics of a motor vehicle is described. The motor vehicle includes a vehicle body, a front wheelhouse, and a frame. The mudflap-integrated aerodynamic member includes a mudflap portion configured to attach to the front wheelhouse and cover at least a portion of the front wheelhouse and an elongated air strake attached to and projecting from the mudflap portion. The elongated air strake includes an elongated strake body extending longitudinally with respect to the vehicle body from an outboard edge contiguous with the mudflap portion to an inboard edge adjacent to the vehicle body.