GM 2017 Patent on Aero Devices
GM applied for a patent showing a C7 and a computer controlled way to control downforce with movable splitter, spoiler and rear diffuser elements.
The Abstract States:
The system includes an adjustable aerodynamic-aid element mounted to the vehicle body. It includes a mechanism configured to vary a position of the adjustable aerodynamic-aid element relative to the vehicle body and thereby control movement of the airflow.
Additionally it includes a sensor configured to detect a height of the vehicle body relative to a predetermined reference frame and a controller configured to receive a signal from the sensor indicative of the detected vehicle body height.
The controller is configured to determine a ride-height of the vehicle using the detected vehicle body height and to regulate the mechanism in response to the determined ride-height to control aerodynamics of the vehicle.
Mabe we'll see in the C8!