Abstract: A method and system for controlling the stability and yaw response of a vehicle being equipped with a front axle (24), a rear axle (26), a controllable differential (22) and a control unit (50) arranged for locking and unlocking the differential (22), the method includes: selectively locking or unlocking the differential (22) depending on the operation of the vehicle; measuring at least the longitudinal vehicle speed (v); comparing the measured vehicle speed (v) with a predetermined first reference speed (vH); and locking the differential (22) if the measured vehicle speed (v) exceeds the first reference speed (vH).

Abstract: A method and system for controlling the stability and yaw response of a vehicle being equipped with a front axle (24), a rear axle (26), a controllable differential (22) and a control unit (50) arranged for locking and unlocking the differential (22), the method includes: selectively locking or unlocking the differential (22) depending on the operation of the vehicle; measuring at least the longitudinal vehicle speed (v); comparing the measured vehicle speed (v) with a predetermined first reference speed (vH); and locking the differential (22) if the measured vehicle speed (v) exceeds the first reference speed (vH).

Abstract: The present invention relates to a differential gear equipped with a selectively controllable locking device. Said locking device is self energizing, i.e. it utilizes the differentiation energy (i.e. the possible torque imbalance) to self-lock on its own accord. The control signal is therefore not needed to lock the locking device but rather to selectively control it not to lock itself. Said control signal is designed to, separately for each of the two possible differentiation directions, allow or not allow the locking device to lock. In this way the differential gear will get four different working modes. Said working modes are respectively; open regardless of differentiation direction; open in one differentiation direction but self-locking in the other direction; open in the other direction but self-locking in the first one; self-locking regardless of differentiation direction. A control unit is supplied with sensor data of the present “driving situation”. Said control unit has a steering strategy.