Vehicle Dynamics
It’s more than just moving forwards.
More lateral acceleration? More agility and performance? Better lap times?
Originally introduced as a safety system, today with the aid of many value added functions, ESC can also have a noticeable impact on vehicle dynamics.
Torque vectoring for example allows a broadening of the lateral vehicle dynamic limits of a vehicle. While driving through a corner, this technology allows the propulsion forces between the right and left driven wheels to be separately controlled. This results in a measurable difference on vehicle agility: Maximum lateral acceleration can be increased by up to 10 % during a transient maneuver, resulting in a clear lap time improvement for a motorsport application. Bosch incorporates torque vectoring under the acronym of DWT (Dynamic Wheel Torque):
- Via brakes: DWT-B
- Via an active differential: DWT-D
- Via wheel individual electric motors: DWT-E
Combined with a limited slip differential, Dynamic Coupling Torque Control, named DCT-R, allows for more stability and traction.
Optimization of straight line acceleration is achieved with the launch control function through the coordination of engine, transmission and ESC control modules.
