Audi improves quattro AWD with new sport differential
Audi has developed a new performance differential for its quattro AWD cars available from next year onwards. The new system distributes torque from the engine independently between the rear wheels, improving traction beyond that of the current AWD set-up. According to Audi, the tendency of its AWD cars to understeer has been reduced to almost nil thanks to the system analyzing acceleration, yaw angle and speed to identify where traction is lost.
In its basic setting, the torque-sensing centre differential delivers 40% of torque to the front axle and 60% to the rear. The new set-up is able to send part of this torque to the individual rear wheels almost instantly (less than 100 milliseconds) if it detects any loss of traction. The new differential features a multi-plate clutch running in an oil bath, with the clutches activated by an electro-hydraulic actuator.
Drivers will be able to select from three different operating modes, with ‘comfort’ mode focusing on stability, ‘auto’ mode providing a balance between stability and handling, and finally ‘dynamic,’ which offers the best handling but the roughest ride.
Audi drive select is different, the torque vectoring between the left and right wheels is without a doubt not available on the S5 or any Audi model yet. It is rumored that the new S4 maybe the first model to have this system.I think it's already avaliable on S5's. ADS is a comfort/auto/dynamic selection and the quattro that comes on S5's now can send up to 85% of tourque to the back wheels. My 2 cents.
Hmmm... now I am confused How does this system work exactly?Audi drive select is different, the torque vectoring between the left and right wheels is without a doubt not available on the S5 or any Audi model yet. It is rumored that the new S4 maybe the first model to have this system.