PORSCHE DYNAMIC CHASSIS CONTROL
PDCC is becoming more common as a standard feature on modern Neunelfers. Total 911 explains how the anti-roll system works
“PDCC uses hydraulically actuated cylinders to mechanically alter the load”
When cornering, all cars roll towards their outside wheels. This means that the loads experienced by each tyre are no longer even, as the inside edge ‘goes light’.
In order to achieve a greater equilibrium between all four contact patches Porsche has developed an electrohydraulic anti-roll bar system, resulting in more responsive handling when driving your 911 to the limit.
Rather than using normal drop links between the dampers and the antiroll bar, PDCC uses hydraulically actuated cylinders to mechanically alter the load on both the front and rear anti-roll bars. Sensors connected to each damper measure the movement under both bump and rebound, and these measurements are then used to determine how to load both anti-roll bars.
At each corner of the car the cylinders move in the opposite direction to the dampers, pushing the anti-roll bar under bump and pulling during rebound. This optimises the camber of each wheel, improving the wheel’s contact patch to the ground as well as ensuring that the ideal amount of load is transferred from wheel to wheel when turning the corner. All of this results in a more direct turn-in while also ensuring that the car feels more stable during cornering. However, there is a caveat, as the technology can rob the driver of ‘driver feel’ from the car during this period. Whether you like the technology will come down to your driving style, but we feel it’s a great system for providing even more stability right when you need it – on the limit.