Engine torque regulation

Engine torque regulation takes place after bus communication with the engine control module. The ESP control module requests an engine torque between -100 and +400 Nm. This is achieved through ignition retardation and throttle control, i.e. by changing the throttle angle and the boost pressure (air mass/combustion). Using engine torque regulation means that the brakes need not be applied as often, resulting in a higher degree of comfort.

These actions mean that kinetic energy in the drive wheels is converted into heat in both cases. Applying the brakes heats the wheel brakes and ignition retardation increases the exhaust temperature. Ignition retardation is not allowed at high exhaust temperatures to protect the turbocharger and catalytic converter.