Adjustable aerodynamic system for a motor vehicle

An adjustable aerodynamic system for a motor vehicle includes a deployable rear spoiler assembly, a deployable rocker extension assembly and a deployable air dam assembly. The deployable rear spoiler assembly includes a main body portion operatively associated with the rear deck lid and linearly translatable rearward to a deployed position. The deployable rocker extension assembly includes a lower member and an intermediate member. The lower member is driven by a ball screw motor to a deployed position and the intermediate member is downwardly spring biased so as conceal a gap created between the vehicle and the lower member upon deployment. The air dam assembly is operatively associated with the front facie and downwardly translatable to its deployed position. In the deployed position, the air dam functions to lower the front profile of the vehicle and further functions to block one or more venting passages in the front facia.

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We claim:

1. An aerodynamic system for a motor vehicle including a rear deck lid and a front facia having a plurality of openings, the adjustable aerodynamic system comprising:

a rear spoiler assembly including a main body portion movable between an undeployed position and a deployed position, the main body portion being operatively attached to the rear deck lid of the motor vehicle;

a rocker extension assembly including a lower member and an intermediate member, the lower member downwardly translatable relative to the vehicle from an undeployed position to a deployed position, the intermediate member pivotally attached tothe motor vehicle; and

an air dam assembly including a main body portion operatively associated with the front facia, said main body portion downwardly translatable from an undeployed position to a deployed position such that at least one of the plurality of openingsin the facia is covered when said main body portion is in said undeployed position and said at least one opening is opened when said main body portion is in said deployed position.

2. An aerodynamic system in combination with a motor vehicle including a rear deck lid, the adjustable aerodynamic system comprising:

a rear spoiler assembly including a main body portion movable between an undeployed position and a deployed position, the main body portion being operatively attached to the rear deck lid of the motor vehicle;

wherein said main body portion is mounted to an underside of said deck lid and rearwardly extends from said undeployed position to said deployed position.

3. The aerodynamic system for a motor vehicle of claim 2, further comprising:

a pair of channels secured to said main body portion; and

a pair of guide portions carried by said vehicle, each guide portion of said pair of guide portions being slidably disposed with one of said pair of channels.

4. The aerodynamic system for a motor vehicle of claim 3, wherein each of said pair of channels is generally hat-shaped.

5. An aerodynamic system in combination with a motor vehicle, the adjustable aerodynamic system comprising:

a rocker extension assembly including a lower member and an intermediate member, the lower member downwardly translatable relative to the vehicle from an undeployed position to a deployed position, said intermediate member movable between anupper position and a lower position.

6. The aerodynamic system for a motor vehicle of claim 5, wherein said intermediate member functions to conceal a gap between said motor vehicle and said lower member when said lower member is in said deployed position.

7. The aerodynamic system for a motor vehicle of claim 6, wherein said intermediate member is pivotally attached to the motor vehicle.

8. The aerodynamic system for a motor vehicle of claim 5, wherein the motor vehicle defines a channel and further comprising a guide portion carried by said lower member, said guide portion being slidably received within said channel.

9. The aerodynamic system for a motor vehicle of claim 5, further comprising a drive unit for translating said lower member between said undeployed and said deployed positions.

10. The aerodynamic system for a motor vehicle of claim 9, wherein the drive unit includes an internally threaded sleeve interconnected to one of the motor vehicle and the lower member, a motor attached to the other of the motor vehicle and thelower member, and a threaded rod operatively engaged with said motor and in threaded engagement with said sleeve.

11. The aerodynamic system for a motor vehicle of claim 10, wherein said motor is attached to said lower member.

12. The aerodynamic system for a motor vehicle of claim 10, wherein said motor is a ball screw motor.

13. An aerodynamic system in combination with a motor vehicle including a front facia having a plurality of openings, the adjustable aerodynamic system comprising:

an air dam assembly including a main body portion operatively associated with the front facia, said main body portion downwardly translatable from an undeployed position to a deployed position such that at least one of the plurality of openingsin the facia is covered when said main body portion is in said undeployed position and said at least one opening is opened when said main body portion is in said deployed position.

14. The aerodynamic system for a motor vehicle of claim 13, further comprising a drive unit for translating said main body portion between said undeployed and said deployed positions.

15. The aerodynamic system for a motor vehicle of claim 14, wherein the drive unit includes an internally threaded sleeve interconnected to one of the motor vehicle and the main body portion, a motor attached to the other of the motor vehicleand the main body portion, and a threaded rod operatively engaged with said motor and in threaded engagement with said sleeve.

16. The aerodynamic system for a motor vehicle of claim 15, wherein said motor is attached to said main body portion.

17. The aerodynamic system for a motor vehicle of claim 15, wherein said motor is a ball screw motor.

18. An aerodynamic system in combination with a motor vehicle including a rear deck lid, the adjustable aerodynamic system comprising:

a rear spoiler assembly including a main body portion movable between an undeployed position and a deployed position, the main body portion being operatively attached to the rear deck lid of the motor vehicle;

wherein said main body portion is mounted to an underside of said deck lid;

a pair of channels secured to said main body portion; and

a pair of guide portions carried by said vehicle, each guide portion of said pair of guide portions being slidably disposed with one of said pair of channels.

19. The aerodynamic system for a motor vehicle of claim 18, wherein said main body portion rearwardly extends from said undeployed position to said deployed position.

20. The aerodynamic system for a motor vehicle of claim 18, wherein each of said pair of channels is generally hat-shaped.