Retractable aerodynamic structures for cargo bodies and methods of controlling positioning of the same
A system that has electrically or electro-pneumatically actuated aerodynamic structures. An electric or electro-pneumatic actuator is employed, which receives signals from an existing anti-lock braking system (ABS) controller to determine when actuation occurs. Other systems are also provided that feature electric or electro-pneumatic actuation, including underbody skirts and scoops, as well as inflatable tractor-trailer gap sealing devices, adjustable tractor-trailer gap sealing flaps and inflatable trailer upper streamlining devices. Electronic control units (ECUs) for aerodynamic system control interfacing with alternate sensors for calculating speed are also provided. Satellite navigation, platooning awareness and managed pressure reserve capability can be employed with the aerodynamics ECU.
1. A system comprising:
an aerodynamic structure having two or more panels;
one or more actuators operatively connected to the aerodynamic structure to move the aerodynamic structure from a deployed position to a retracted position or from a retracted position to a deployed position; and
one or more electronic control units that process sensor signals to analyze motion of a vehicle and control the one or more actuators based on the motion of the vehicle,
wherein the two or more panels of the aerodynamic structure are operatively connected so that movement of one panel causes movement in another panel.
2. The system of claim 1 , wherein one or more of the one or more electronic control units includes a built-in GPS to analyze the motion of the vehicle.
3. The system of claim 1 , wherein the one or more actuators includes one or more of: a linear pneumatic cylinder, a pneumatic contracting muscle, a pneumatic expanding bladder, an indirect drive linear electric motor, a linear hydraulic cylinder, an electric winch, a rotary pneumatic motor, a linear actuator, or a rotary electric motor.
4. The system of claim 1 , wherein the aerodynamic structure is rear-facing, and wherein the aerodynamic structure comprises at least an upper panel, a first side panel, and a second side panel.
5. The system of claim 4 , wherein:
the upper panel, the first side panel, and the second side panel are each mounted to a door of a cargo body of the vehicle and move between a folded position on the door in the retracted position and the deployed position, and
in the deployed position, the aerodynamic structure has an internal cavity defined by the upper panel, the first side panel, and the second side panel.
6. The system of claim 4 , wherein:
the aerodynamic structure further comprises one or more bottom panels,
the upper panel, the one or more bottom panels, the first side panel, and the second side panel each mounted to a door of the cargo body and move between a folded position on the door in the retracted position and the deployed position,
in the deployed position, the aerodynamic structure has an internal cavity defined by the upper panel, the one or more bottom panels, the first side panel, and the second side panel, and
a linkage assembly is operatively connected between the upper panel and the one or more bottom panels so that movement of the one or more bottom panels causes movement of the linkage assembly in response thereto and movement of the upper panel in response to the movement of the linkage assembly.
7. The system of claim 4 , wherein the one or more actuators are operatively connected between a door of a cargo body of the vehicle and the upper panel.
8. The system of claim 1 , further comprising one or more mechanisms that bias the aerodynamic structure into the deployed position or the retracted position when the one or more actuators are not actuated.
9. A system comprising:
an aerodynamic structure having two or more panels;
one or more actuators operatively connected to the aerodynamic structure to control positioning of the aerodynamic structure between one of a deployed position or a retracted position; and
one or more electronic control units that process sensor signals to analyze motion of the vehicle and control the one or more actuators based on motion of the vehicle,
wherein the two or more panels of the aerodynamic structure are operatively connected so that movement of one panel causes movement in another panel,
wherein the aerodynamic structure comprises at least one upper panel, a first side panel, and a second side panel, and
wherein the one or more actuators are operatively connected between a door of a cargo body of the vehicle and the at least one upper panel or the at least two side panels.
10. The system of claim 9 , wherein one or more of the one or more electronic control units includes a built-in GPS to analyze the motion of the vehicle.
11. The system of claim 9 , wherein the one or more actuators includes one or more of: a linear pneumatic cylinder, a pneumatic contracting muscle, a pneumatic expanding bladder, an indirect drive linear electric motor, a linear hydraulic cylinder, an electric winch, a rotary pneumatic motor, a linear actuator, or a rotary electric motor.
12. The system of claim 9 , wherein:
the upper panel, the first side panel, and the second side panel are each mounted to a door of a cargo body of the vehicle and move between a folded position on the door in the retracted position and the deployed position, and
in the deployed position, the aerodynamic structure has an internal cavity defined by the upper panel, the first side panel, and the second side panel.
13. The system of claim 9 , wherein:
the aerodynamic structure further comprises one or more bottom panels,
the upper panel, the one or more bottom panels, the first side panel, and the second side panel each mounted to a door of the cargo body and move between a folded position on the door in the retracted position and the deployed position, in the deployed position, the aerodynamic structure has an internal cavity defined by the upper panel, the one or more bottom panels, the first side panel, and the second side panel, and
a linkage assembly is operatively connected between the upper panel and the one or more bottom panels so that movement of the one or more bottom panels causes movement of the linkage assembly in response thereto and movement of the upper panel in response to the movement of the linkage assembly.
14. A system comprising:
an aerodynamic structure having two or more panels;
one or more actuators operatively connected to the aerodynamic structure by a linkage to move the aerodynamic structure from a deployed position to a retracted position or from a retracted position to a deployed position; and
one or more electronic control units that process sensor signals to analyze motion of a vehicle and control the one or more actuators based on the motion of the vehicle.
15. The system of claim 14 , wherein the two or more panels of the aerodynamic structure are operatively connected so that movement of one panel causes movement in another panel.
16. The system of claim 14 , wherein one or more of the one or more electronic control units includes a built-in GPS to analyze the motion of the vehicle.
17. The system of claim 14 , further comprising one or more mechanisms that bias the aerodynamic structure into the deployed position or the retracted position when the one or more actuators are not actuated.
18. The system of claim 14 , wherein the aerodynamic structure is rear-facing, and wherein the aerodynamic structure comprises at least an upper panel, a first side panel, and a second side panel.
19. The system of claim 18 , wherein:
the upper panel, the first side panel, and the second side panel are each mounted to a door of a cargo body of the vehicle and move between a folded position on the door in the retracted position and the deployed position, and
in the deployed position, the aerodynamic structure has an internal cavity defined by the upper panel, the first side panel, and the second side panel.
20. The system of claim 18 , wherein:
the aerodynamic structure further comprises one or more bottom panels,
the upper panel, the one or more bottom panels, the first side panel, and the second side panel each mounted to a door of the cargo body and move between a folded position on the door in the retracted position and the deployed position,
in the deployed position, the aerodynamic structure has an internal cavity defined by the upper panel, the one or more bottom panels, the first side panel, and the second side panel, and
the linkage is operatively connected between the upper panel and the one or more bottom panels so that movement of the one or more bottom panels causes movement of the linkage in response thereto and movement of the upper panel in response to the movement of the linkage.