The disclosure provides a vehicle body lower structure. The vehicle body lower structure includes: a deflector, disposed on a vehicle body and movable between a stowed position covering a lower part of the vehicle body and a deployed position protruding downward; and a shaft member, extending in a vehicle left-right direction and rotatably connecting a front end of the deflector to the vehicle body. The deflector is maintained in the deployed position protruding downward by its own weight, and receiving an impact load from below, the deflector moves from the deployed position to the stowed position.

A vehicle includes an air dam assembly disposed at a first end of the vehicle body that is configured to control an airflow between the vehicle body and a road surface from outside the vehicle to the under-hood compartment of the vehicle. The air dam assembly includes a housing having a top wall and a bottom wall defining a forward wall and an opposing rearward wall therebetween. A plurality of flexible pleats are disposed on the forward wall of the of the air dam housing.

An active air dam system comprises a mounting bracket for mounting beneath the vehicle; a linkage having an air dam mounting portion; and an air dam. The linkage moves between stored and deployed positions by a driver. The air dam is connected to the air dam mounting portion by a pivotal connector and a selectively releaseable connector, which cooperate to maintain a fixed relationship between the air dam and the air dam mounting portion. The selectively releaseable connector releases its connection in response to a force exceeding a threshold amount, thus enabling the air dam when striking an object in an active position thereof to pivot rearwardly. In another aspect, the active air dam system has a biasing structure for biasing the air dam forwardly about the pivotal connector, and is configured to enable the air dam to pivot rearwardly in response to a force applied thereto, thus enabling the air dam when striking an object in the active position thereof to pivot rearwardly and return pivoting forwardly.

The invention exhibits an apparatus for improving the aerodynamics of a commercial vehicle having a cab with doors and below-situated footboards for climbing in and out, and having a front panel in which air inlets are present, wherein the air inlets are connected, via air ducts in or on the panel, to the front wheel case of the commercial vehicle and to an air outlet, wherein the at least one footboard of the cab can be folded away and has at least one through-flow region in the vehicle longitudinal direction.

A motor vehicle includes a body having a front apron, and an underbody. The body forms at least one left and one right front wheel house for receiving one front wheel each. The air-guiding devices have at least one left flow duct and at least one right flow duct. The at least one left flow duct opens in the underbody in front of the left wheel house. The at least one right flow duct opens in the underbody in front of the right wheel house. The respective exit opening is arranged in front of that region of the respective wheel house which is adjacent to the inner side, which faces the vehicle central plane, of the respective vehicle wheel in the straight-ahead position.

A front structure of a saddle ride type vehicle includes a headlight unit, a front cowl, and a middle cowl. At a position outside the headlight unit in the vehicle width direction, an air intake portion opening to the front side of the vehicle is formed between the front cowl and the middle cowl. The front cowl includes a partition wall configured to divide the air intake portion into an upper region and a lower region. The lower region forms an inlet of an air intake path of an air cleaner. The upper region forms a first wind guide path configured to discharge a traveling wind to the rear side of the front cowl.

A vehicle (1; 101) is provided comprising a deployable closure panel (3; 103) which, in a deployed position, closes an air inlet (5; 105) of a vehicle body so that one edge thereof aligns with one edge of the vehicle body. A method is also provided for moving the closure panel (3; 103) into one of the deployed position and a retracted position, based on the vehicle (1; 101) satisfying a criterion. A control system (50) is provided for controlling deployment of the deployable closure panel. The control system (50) is configured progressively to deploy the deployable closure panel from the retracted position to the deployed position in dependence on an operating parameter associated with the vehicle (1; 101) to increase airflow through a closed channel formed by an airflow modification device disposed transversely across a recessed channel formed in a bonnet extending towards a bonnet rear edge.

A vehicle having one or more guide vanes each disposed at each of a respective front and/or rear quarter of the vehicle for guiding the airflow in the vicinity of an adjacent wheel of the vehicle.

A vehicle having a first lateral diffuser provided on a first side of the vehicle and a second lateral diffuser provided on a second side of the vehicle. The first and second lateral diffusers are movably mounted and can be displaced from a retracted position to at least a first deployed position.

A vehicle having a transverse panel and a transverse aerodynamic member, and a control unit. The transverse aerodynamic member is movable to an operating position in which it is spaced apart from the transverse panel. In that operating position, the transverse aerodynamic member is operable to direct airflow downwardly at the rear of the vehicle to control the vertical propagation of the wake formed behind the vehicle.