| 摘要 |
The invention relates to a method for adjusting brake pressures (P) on pneumatically operated wheel brakes (6) of a motor vehicle (2), the brake pressure being adjusted depending on a driver brake request (19) in a normal braking mode (18). In a pressure control mode (24), a control unit (21) adjusts the brake pressure on the respective wheel brakes (6) during reception of an external brake request (30) which is independent of the driver brake request (19) as a function of a resulting target deceleration value, the control unit (21) determining the resulting target deceleration value by combining the external target deceleration value according to the external brake request (30) and a value corresponding to the driver brake request (19). The invention also relates to a brake system (2) for carrying out the method and to a motor vehicle (1) comprising said brake system. In order to reliably guarantee a jerk-free and continuous braking behavior of the motor vehicle (2) when the brake pressure is adjusted in a pressure control mode (24) with external brake request (30) and additional driver brake request (19), in normal braking mode (18), a braking power index (34) is determined which quantitatively represents the brake effect of the wheel brakes (6), taking into account the value of the driver brake request (19) of at least one braking action and of a measured or determined actual deceleration value of the vehicle deceleration. The braking power index (34) is kept ready for a consideration in the pressure control mode (24) and is combined with the value of the driver brake request (19) in the pressure control mode (24). |
