Abstract: An aerodynamic noise reduction device reduces aerodynamic noise originating from a separation region located downstream of a step portion protruding from a surface of an object placed in an airflow. Since the step portion protrudes from the surface of the object placed in the airflow, aerodynamic noise is generated from the airflow separation region located downstream of the step portion. However, by forming an air discharge vent at the step portion at a position near a point, in the separation region, where a Reynolds stress is at its maximum and by discharging air from the air discharge vent toward the point where the Reynolds stress is at its maximum, the velocity gradient in the separated shear layer in the separation region is mitigated to decrease the maximum value of the Reynolds stress. The aerodynamic noise is thus effectively reduced.

Abstract: A spoiler where when a weld face is inclined with respect to a pressurization direction, a weld rib is uniformly welded, and an outer member and an inner member are welded and fixed to each other at a stable strength. An inner member is welded and fixed to on an interior face side of an outer member by a vibration welding method. The outer member and/or the inner member before being welded has a weld rib formed on a face inclined with respect to a pressurization direction at the time of welding; a cross section of the rib is formed in a triangular or quadrangular shape; and in the cross section, two corners at both ends of a bottom edge each form an angle of 90 degrees or less.

Abstract: An active air flap for a vehicle can absorb shock energy by means of a wing of a housing which pivots in a collision with a pedestrian and can minimize the pedestrian injury as possible.

Abstract: An aerodynamic drag reducing apparatus is provided for use with vehicles having surfaces that are not streamlined. The apparatus including an exterior cover supported by moveable frames which in turn are supported by sets of supporting linkages. The moveable frames extend rearward and together with the exterior cover form a drag reducing shape for use in a drag reducing configuration and collapse for use in a space saving configuration.

Abstract: A method of reducing aerodynamic drag on a moving blunt-edged body, the method comprising actively generating a flow of air at a blunt edge of a body and using the generated flow of air to control an external flow of air moving relative to an edge of a moving blunt-body.

Abstract: A towing tractor includes an operator's cockpit, a battery, a hood, a first inclined surface, a first inclined surface and a second inclined surface. The battery is disposed forward of the operator's cockpit. The hood covers the top of the battery. The first inclined surface is formed on the hood and inclined downwardly toward the front of the towing tractor. The second inclined surface is located forward of the first inclined surface and inclined downwardly toward the front of the towing tractor. The inclination angle of the second inclined surface is greater than the inclination angle of the first inclined surface.

Abstract: A retractable air dam assembly for a vehicle is provided. The air dam assembly has an air deflector panel adapted to be mounted adjacent a front bumper of a vehicle. A linear actuator is adapted to be mounted to the vehicle. At least one rocker arm is adapted to be mounted to the vehicle, and coupled to the linear actuator at a first end, and coupled to the panel at a second end. The linear actuator translates the panel linearly between a stowed position, in which the panel is at least partially concealed by the front bumper, and a deployed position, such that the panel at least partially extends a distance below a bottom surface of the front bumper to reduce airflow beneath the vehicle. A counter-balance is connected to a third end of the rocker arm to offset a weight of the panel.

Abstract: One embodiment comprised of two long triangular shaped bodies, one larger in width than the other to facilitate an insertion that is telescopic and covered at opposing ends by end caps, one smaller than the other to communicate with each of the said bodies width. The center of each end cap comprising of a triangular shaped sleeve and a retaining hole to secure the end of each triangular body; both said end caps positioned with the back mounting side in the same direction, thus perpendicular to each other so that the mounting holes can face an exterior surface. In addition, the said embodiment is made with resilient material such as polyvinyl chloride (PVC) to support UV protection and weather resistance.

Abstract: A vehicle includes a vehicle body having a first body end configured to face oncoming ambient airflow when the vehicle is in motion relative to a road surface, and also having a second body end opposite of the first body end. The vehicle also includes an underbody portion configured to span a distance between the first and second body ends and define a space between the vehicle body and the road surface. The vehicle additionally includes an active diffuser assembly disposed at the second end and configured to control the airflow past the underbody portion through the space between the vehicle body and the road surface and out to the ambient. The active diffuser assembly includes a panel configured to selectively extend into and retract from the ambient airflow aft of the second end. The active diffuser assembly also includes a first device configured to extend the panel.

Abstract: An energy-saving vehicle including a housing, a pair of front wheels, a pair of rear wheels, and a steering wheel. The housing includes an outer portion, an inner portion, an air-flow channel, at least a first air inlet, and at least an air outlet. The air-flow channel is disposed between the outer portion and the inner portion of the housing. The first air inlet is disposed in the front of the vehicle. The air outlet is disposed at the back of the vehicle. The first air inlet and the air outlet are connected to the air-flow channel. The front wheels and the rear wheels are driven by a power unit. The length of the air-flow channel is no less than that of the upper portion of the housing. The vehicle consumes less energy and travels more stably compared to conventional vehicles.

Abstract: A system and method aerodynamic fairings including a gap fairing. The gap fairing includes multiple panels. The multiple panels are interconnected utilizing connectors to form a half conical shape extending from a front portion of a trailer. The gap fairing also includes supports connected to the multiple panels through support structure of the trailer.

Abstract: A motor vehicle seat including a seat portion having a wind deflector provided in a storage compartment thereof, the wind deflector being mounted for movement between a rest position in the storage compartment and an active position out of the storage compartment. The seat portion also has a rotational joint configured to permit rotation of the seat portion between a first orientation in which the seat portion permits a user to assume a seated position, and a second orientation in which the seat portion permits the wind deflector to assume the active position.

Abstract: An adjustable air diffuser is disposed in an airflow channel into which a travelling wind is directed through an opening provided in a bumper face. The diffuser opens and closes the channel by movable louver blades driven by an actuator. An upper part of the diffuser is disposed to face a rear wall of the bumper face and is attached to a bumper beam extending along a vehicle width direction. A lower part of the diffuser is attached to a vehicle body structural member. The attachment structure includes a column that is disposed behind the adjustable air diffuser. A lower end of the column is attached to a lower end of the adjustable air diffuser. Weak portions are provided on the column such that the column breaks when the column interferes with another member behind the column.

Abstract: A side cover structure for straddle type vehicle for preventing heat at a part of the vehicle such as a knee grip portion, where the passenger's legs touch. An engine is supported on the vehicle body frame with a passenger seat disposed above the engine. A side cover covers the side direction of the vehicle body. The side cover has a knee grip portion at the position where the passenger's legs touch in the front direction of a passenger seat. In addition, the knee grip portion is doubly configured inside and outside.

Abstract: An air dam deployment and retraction system includes an air dam, a compressor, an air reservoir, a first switch, a second switch, and a third switch. The air dam is configured for moving between a deployed position and a retracted position. The compressor is configured to compress fluid. The air reservoir defines a chamber that is configured to receive a volume of the compressed fluid. The first switch is configured to selectively move between a first inactive position and a first active position. The first inactive position is configured to provide the compressed fluid to the atmosphere. The first active position is configured to provide the compressed fluid from the compressor to one of the chamber of the air reservoir and the air dam. The air dam is configured to move from the retracted position to the deployed position upon receiving the compressed fluid.

Abstract: A rear structure 1 of a vehicle has a high mounted stop lamp 5 provided at the rear end of a vehicle body. The rear structure is configured such that regions bilaterally outward of a region, where the high mounted stop lamp is installed, on the upper surface of the rear end are inclined more steeply than a reference plane comprising an inclined surface of a roof panel 2, and that the lower surface of the high mounted stop lamp is located above a rearward field of view from the vehicle.

Abstract: The present invention provides a resin product for a vehicle, which can be welded, even in a shape having a part curved in a vibration direction, with a sufficient strength by means of vibration welding. A resin product 100 for a vehicle, made by welding a plurality of members 1, 2 by vibration welding is characterized in that: welded parts by vibration welding are arranged to a plurality of different surfaces 11 (11a, 11b, . . . ) discretely provided in a vibration direction Q; and a respective one of the plurality of surfaces 11 is set to fall within a predetermined angle with respect to the vibration direction Q.

Abstract: Disclosed is an automobile body undercover having durability against damage from foreign objects such as flying stones even in a case where a nonwoven fabric is used on an outer surface on a road surface side in order to achieve sound absorbing characteristics with respect to engine noise leaked outside a car, road noise originating from the road surface side, or the like.

Abstract: A vehicle boundary layer air flow control structure is provided with a vehicle body and a side view mirror. The vehicle body includes an exterior contoured surface with an air flow deflector. The side view mirror is attached to the vehicle body to provide a diagonally rearward direction to be viewed from a driver's seat. The air flow deflector has an inward longitudinal air flow guiding surface provided in a vehicle body region of the exterior contoured surface of the vehicle body along which an air flow heading toward the side view mirror passes. The inward longitudinal air flow guiding surface extends in an air flow direction of the air flow with respect to the side view mirror to divert the air flow inward of the side view mirror with respect to a vehicle widthwise direction.

Abstract: A front underfloor structure of a vehicle (EV) includes a protruding member protruding downward from a front underfloor surface of the vehicle, and redirects a flow of traveling air that flows around a front underfloor while traveling. The protruding member is configured as a protruding member with curved surface (31) disposed at a position closer to the vehicle front than front tires (1L, 1R) and in a central portion of the front underfloor straddling a vehicle center line (CL). The protruding member with curved surface (31) has a circumference of protrusion in a vehicle longitudinal direction that is longest at the position of the vehicle center line (CL), and the circumference of protrusion in the vehicle longitudinal direction becomes gradually shorter with increasing distance from the vehicle center line (CL) on both sides in a vehicle width direction.

Abstract: A vehicle boundary layer air flow control structure is provided with a vehicle body and a side view mirror. The vehicle body includes an exterior contoured surface with an air flow deflector. The side view mirror is attached to the vehicle body to provide a diagonally rearward direction to be viewed from a driver's seat. The air flow deflector has a downward air flow guiding surface provided in a vehicle body region of the exterior contoured surface of the vehicle body along which an air flow heading toward the side view mirror passes. The downward air flow guiding surface extends in an air flow direction of the air flow with respect to the side view mirror to divert the air flow underneath the side view mirror.

Abstract: An aerodynamic device 24 for fitting to a vehicle 1 comprising a load compartment 10 having a roof 16 with front section 22, which is the section of the roof 16 towards an edge 20 of the roof 16 that is forward-most in relation to the direction of travel of the vehicle 1. The device 24 has an air guiding member 26 and an attachment structure 32 for attaching the member 26 to the vehicle 1 in a first, active position in spaced apart relation to the front section 22 of the roof 16 thereby to define an airway 34 between the member 26 and the front section 22 of the roof 16.

Abstract: A sprint car wing or wing assembly is provided. The wing, which is known as a top wing, includes a wing belly and left and right side boards attached generally perpendicular to the wing belly. The wing belly includes a non-uniform thickness along its width to create downforce for the car. The right and left side boards are positioned mostly below and above the wing belly to aid in the creation of downforce, and also to provide the car with a sideforce during cornering. The side boards include a flexible surface, which will curve or bow to create greater sideforce. The side boards also house mounting frames of the wing assembly to mount the side boards to the wing belly.

Abstract: A convertible has a roof (8) that can be adjusted between an opened and covered positions and a wind deflector (12) that can be adjusted between a retracted position (RS) and a deployed position (WS). The wind deflector (12) is mounted movably on longitudinal sides (2) of the convertible (1) adjacent to interior paneling (10) and has a section underneath the interior paneling (10). Openings (17) for a soft top linkage of the convertible can be closed or opened by flaps (16) on the longitudinal sides (2) of the convertible (1) adjacent to the wind deflector (12). The convertible (1) also has a control device (19) for the roof arrangement (8) and a position-detection device (27) for the flap (16). The control device (19) permits adjustment of the roof (8) only if the position-detection device (27) detects an open position (P2) of the flap (16).

Abstract: A drag reducing device utilizing sealed aft cavities designed to limit interference with existing truck and trailer designs is described. The invention comprises one or more sealed aft cavities affixed to the rear of a traditional commercial straight truck or trailer, or any other blunt (or mostly blunt) aft faced vehicle. A capability is provided by which the device is stowed to allow normal operation of the straight truck, trailer or vehicle. Drag is reduced by the streamlining of the rear of the vehicle, postponing and narrowing the flow separation downstream of the trailing edge as well as increasing the pressure on the back of the vehicle with the open to the rear, sealed aft cavity. The concept described focuses on the utilization of sealed aft cavities) to limit the effects of blunt body drag and the means for attachment and stowage for loading and unloading cargo.

Abstract: A plasma spoiler is mounted in a rear portion of a vehicle for exerting a force on a passing air flow. The plasma spoiler has a dielectric substrate formed of a dielectric material, a first electrode mounted on a bottom surface of the dielectric substrate and insulated by the dielectric substrate, a second electrode mounted on an upper, exposed surface of the dielectric substrate, and a power source connected to the first and second electrodes. The first electrode is disposed in a rearward direction relative to the second electrode. A switch is disposed between the power source and one of the first electrode and the second electrode. The switch is controlled by a controller that is in communication with a speed sensor, so as to activate the plasma spoiler only when the vehicle exceeds a trigger speed.

Abstract: An air deflection apparatus for reduction of vehicular air drag comprises at least two air deflection elements coupled to a rear portion of the vehicle but not to the rear-facing surface of the vehicle or, in other embodiments, at least two air deflection elements coupled to a rear portion of the vehicle but not to any rear door which the vehicle may have. The air deflection elements are displaceable, preferably in unison, between a retracted position and at least one deployed position, and may be deployed and retracted manually, or remotely with powered assistance, or under microprocessor control. The air deflection elements are preferably arranged above, below and on either side of the rear-facing surface of the vehicle, with at least the latter two air deflection elements having matching configurations, and in some embodiments, with one or more of the air deflection elements being associated with a frame within which it is substantially disposed when in the retracted position.

Abstract: An aerodynamic drag reducing apparatus is adaptable for use with vehicles having downstream surfaces that are not streamlined. The apparatus consists of a series of nesting shapes and/or frameworks that extend rearward for use in a drag reducing configuration and collapse for use in a space saving configuration.

Abstract: A car having a frame, which supports a pair of front wheels and a pair of rear wheels, a passenger compartment, at least one pair of doors, and an underbody which delimits the car on the lower side, faces the road surface, and has an aerodynamic diffuser, which is arranged in a rear position and is provided with a chute having a height with respect to the road surface that progressively increases when longitudinally moving from the front to the rear. The underbody can include a pair of aerodynamic channels, each of which extends longitudinally, leads to the aerodynamic diffuser, is open on the lower side towards the road surface, has a shape of an upside-down “U” in its transverse section and is open underneath towards the road surface and has, in its transverse section, an area that progressively increases when longitudinally moving from the front to the rear.

Abstract: A method of reducing aerodynamic drag on a moving blunt-edged body, the method comprising actively generating a flow of air at a blunt edge of a body and using the generated flow of air to control an external flow of air moving relative to an edge of a moving blunt-body.

Abstract: A system for controlling airflow through an under-hood compartment of a vehicle body includes a folding air dam assembly configured to control an airflow from the ambient to the under-hood compartment. The air dam assembly includes an extendable portion having a pleat configured to fold when the extendable portion is retracted. The air dam assembly also includes an actuator configured to selectively extend and retract the extendable portion. The system also includes a controller configured to regulate the actuator. A vehicle employing the system is also disclosed.

Abstract: An air dam is provided which includes an upper portion, an intermediate portion and a flexible lower portion. The upper portion is affixed to the underside of a vehicle. The intermediate portion is integral to the upper portion. The flexible lower portion is affixed to the upper portion. The intermediate portion of the air dam is operatively configured to structurally support the flexible intermediate portion.

Abstract: A sprint car wing or wing assembly is provided. The wing, which is known as a top wing, includes a wing belly and left and right side boards attached generally perpendicular to the wing belly. The wing belly includes a non-uniform thickness along its width to create downforce for the car. The right and left side boards are positioned mostly below and above the wing belly to aid in the creation of downforce, and also to provide the car with a sideforce during cornering. The side boards include a flexible surface, which will curve or bow to create greater sideforce. The side boards also house mounting frames of the wing assembly to mount the side boards to the wing belly.

Abstract: The invention is a drag reducer for use in commercial semitrailers, trucks, cargo containers, rail cars, and the like. The drag reducer takes the form of a hollow fluid conduit that collects fast moving air from under the trailer while the truck is moving at speed and forces it through vertical hollow fluid conduit up and around the sides of the trailer's rear door. Small holes facing outward from the vertical hollow fluid conduit eject the air in a direction perpendicular to the direction of motion, thereby reducing overall drag on the trailer. At least two hollow fluid conduits are contemplated, with at least one hollow fluid conduit being vertically placed, and at least one hollow fluid conduit being placed horizontally in each system.

Abstract: A convertible having a convertible top, a windbreak device, which has at least two windbreak bows which are mounted in pivot axles on the convertible and can be pivoted between a folded-in position of rest (RS) and a folded-out active position (WS) and which are connected to one another via a coupling mechanism underneath their pivoting axes, and having an inner trim which covers the pivot axles. The windbreak device can be activated manually between the position of rest and the active position, the inner trim has a through-opening for linkage of the convertible top, and the through-opening can be closed off or opened by a movable flap, wherein in an open position of the flap, the flap is arranged at least partially under the inner trim, and a blocking element is provided which blocks the manual activation of the windbreak bows if the flap is in the open position.

Abstract: A drag reducing apparatus is provided for use with vehicles having surfaces that are not streamlined. The apparatus includes an exterior cover that forms a drag reducing shape when the apparatus is fully extended. The apparatus can be retracted to a space saving configuration. A scissors linkage extends and retracts the apparatus. The scissors linkage can be motorized, and the motor can extend the scissors linkage by turning in a first direction and can retract the apparatus by turning in a second direction. The scissors linkage can hold the exterior cover taut when the apparatus is fully extended. The scissors linkage can support the exterior cover at intermediate locations when the apparatus is not fully extended. The apparatus can include support linkages and intermediate moveable members that support the exterior cover and define the drag reducing shape.

Abstract: The invention provides an Air Foil for Vehicles, is a specially designed cover for the backs of pickup trucks and trailers that provides them an aerodynamic quality and provides lift reducing their effective weight as they travel in a forward direction. The invention is a self contained system that reduces energy needed to power a motor vehicle without requiring an excess use of fossil fuels. The Air Foil for Vehicles applies an auto wing mobile airfoil configuration to the bed of a pickup truck and the open area of a trailer to lift the back ends off the road and facilitate a smoother ride and better miles per gallon.

Abstract: A side skirt system for reducing drag on a trailer includes a side skirt wall configured to be coupled to one side of the trailer to extend below a side wall of the trailer along a length of the trailer. A mounting bracket assembly of the system is coupled to the side skirt wall and is configured to be coupled to a floor assembly of the trailer. The mounting bracket assembly is configured to tilt laterally outwardly and laterally inwardly with respect to a generally vertical axis parallel to the side wall of the trailer.

Abstract: An air splitter panel is attached to a vehicle fascia panel. One of the panels has a plurality of longitudinal extending slots and the other of the panels has a plurality of fastener holes that register with the slots. Fasteners are mounted in each of the holes and extend through the slot registered therewith to attach the panels together while permitting sliding movement of the splitter panel relative to the fascia panel. A yieldable detent acts between the fastener and the one of the panels with the slot to block the sliding movement of the splitter panel until a force applied upon the splitter panel overcomes the yieldable detent to permit the sliding movement of the splitter panel.

Abstract: The present invention is directed to a device for reducing drag on a vehicle. The device comprises a sheet of material and a plurality of depressions/elevations. The sheet of material having a base portion and an apex extending from the base portion.

Abstract: A modified air dam includes an integral spring-like, corrugate-shaped portion for absorbing impact forces imposed on the air dam. A lower portion of the air dam is generally planar and angled slightly from a vertical plane toward the front of the vehicle. The air dam also includes a rounded portion to provide a horizontal offset between upper and lower portions of the air dam and to direct airflow toward a bottom portion of the radiator. The air dam may also be curved side-to-side or employ an inverted, generally U-shaped portion as a first force absorbing region and a spaced rib that serves as a second force absorbing region. The generally U-shaped portion also advantageously extends over a fastener and mounting region of the air dam.

Abstract: An air deflection apparatus for reduction of vehicular air drag comprises at least two air deflection elements coupled to a rear portion of the vehicle but not to the rear-facing surface of the vehicle. The air deflection elements are displaceable, preferably in unison, between a retracted position and at least one deployed position, and may be deployed and retracted manually, or remotely with powered assistance, or under microprocessor control. The air deflection elements are preferably arranged above, below and on either side of the rear-facing surface of the vehicle, with at least the latter two air deflection elements having matching configurations. Vehicles equipped with the apparatus, and methods of reducing vehicular air drag using the apparatus, are also disclosed.

Abstract: A drag reducing tailgate with decorative attachments. The tailgate may include a frame with an upper board, a lower board, a first side board, and a second side board. An opening may be formed in between the boards. A decorative attachment, such as an antler, may be attached to the lower board and extend passed the opening and up to the upper board.

Abstract: An air guiding device for a motor vehicle has a spoiler lip (12) extending in the transverse direction (FQ) of the vehicle, and an actuating device (34) for the spoiler lip (12) in such a manner that the spoiler lip (12) is movable between a retracted rest position (RS) and an extended maximum position (MS). The spoiler lip (12) has, in the region of the longitudinal side (22) thereof which is directed toward a roadway, a flexurally elastic rod (24) that is guided movably in a guide device (26). A displacement measuring device (40) detects a position of the rod member (24).

Abstract: A device for attaching to and covering an entire blunt nose of a blunt-nosed trailer that is attached to and spaced behind a towing vehicle without impinging upon the towing vehicle so as to reduce drag of the blunt-nosed trailer when being towed by the towing vehicle by changing the blunt nose of the blunt-nosed trailer to a lateral wedge. The device includes a frame and a skin. The frame is laterally wedge-shaped, is rigid, and is for attaching to the blunt nose of the blunt-nosed trailer without impinging upon the towing vehicle. The skin covets the frame, is rigid, is laterally wedge-shaped, encloses the frame, and is for covering the entire blunt nose of the blunt-nosed trailer so as to reduce drag of the blunt-nosed trailer when being towed by the towing vehicle by changing the blunt nose of the blunt-nosed trailer to a lateral wedge.

Abstract: An apparatus for converting a substantially flat vehicular surface on the rear of a vehicle so as to create at least one surface which operates to reduce aerodynamic drag, comprising: at least one support adapted to be moveably attached to the rear surface of a vehicle; at least one surface supported by the at least one support; the at least one surface movably position so as to move from deployed position extending from the rear of a vehicle to a retracted position; whereby the apparatus operates to reduce aerodynamic drag in the deployed position and does not interfere with vehicle loading in the retracted position.

Abstract: The purpose of this device is to reduce the fuel consumption of heavy trucks by improving airflow along the underside of a trailer, using a series of rectangular panels to close the gaps between trailer crossmembers and create a continuous smooth surface. These panels are placed in between adjacent crossmembers and secured to their flanges using a plurality of clamping mechanisms. Each clamp is comprised of a U nut fitted to edge of the panel and a half clip that is bolted to the bottom. With the U nut clamping down on the topside of the flange and the half clip gripping the bottom surface of the crossmember, these clamps secure each panel in place. These fittings, requiring no modification to the crossmembers themselves, are easily installed and readily removable.

Abstract: The invention relates to a resilient infill for positioning in a channel in a crossbar of a roof rack or load carrier. The infill comprises a flexible upper portion and a base comprising a bottom. A pair of flexible, opposing side walls extend from the bottom and curve upwardly and outwardly to meet with outer edges of the flexible upper portion. The width of the upper portion is greater than the width of the bottom and the infill has a substantially hollow interior. The infill is compressible and makes minimal wind noise when positioned in the crossbar of a roof rack located on a moving vehicle.

Abstract: A wind deflector system for a motor vehicle having an end segment for limiting extension of the wind deflector system at the top in the vertical direction, a flexible planar structure fastened to ends of the end segment, and a winding shaft for holding the wound-on planar structure. At least one swivel arm is provided, by means of which the wind deflector system can be transferred from a stowed position to a functioning position with a raised end segment, and a retainer is provided on the planar structure which is arranged, at least when in the functioning position, such that, together with the swivel arm, it restricts mobility of the planar structure relative to the swivel arm in the transverse direction of the vehicle. The system is effective for avoiding the formation of creases in the wound-up planar structure of the wind deflector system.

Abstract: An open roof construction for a vehicle comprising a roof opening that can be closed by a panel of which at least the rear edge can be pivoted upward and downward. A three-dimensional body is provided on the underside of said panel to influence the air flow, near the rear edge of the panel. The three-dimensional body generates swirls in the air flow over the panel.