Patent ID: 9193338
Filing Date: 2015-11-24
Classification: B60T

Abstract:
1. A pressure-medium-activated brake device of a vehicle, comprising: a brake slip control (ABS) for driver-independent control of a brake slip during a braking process; and a traction control (TCS) for driver-independent control of a drive slip during an acceleration process; wherein as part of the brake slip control (ABS), there is at least one ABS pressure control valve controlled by a brake controller unit that is connected in pressure lines running between a service brake valve and at least one brake cylinder to increase, maintain and reduce a pressure in an allocated brake cylinder, wherein as part of the traction control, there is at least one TCS valve controlled by the brake controller unit to create a compressed air connection between a pressure medium store and the at least one ABS pressure control valve, wherein at least one of a hill start assistant and a creep suppression function is controlled by control routines, as part of which function a brake pressure generated by a driver during a preceding braking in at least some brake cylinders of the vehicle, on a detected stoppage of the vehicle on a hill or a detected creep of the vehicle, is at least maintained in the at least one brake cylinder without the driver having to activate a brake further, wherein all control routines of the at least one of the hill start assistant and the creep suppression function are implemented in the brake controller unit, which brake controller unit is configured to implement the at least one of the hill start assistant and the creep suppression function, and wherein the brake controller unit controls exclusively the at least one ABS pressure control valve and the at least one TCS valve, wherein there is at least one changeover valve which on an input side is connected to the at least one TCS valve and to a channel of the service brake valve and on an output side to at least one ABS pressure control valve to be able to transfer to an output of the at least one ABS pressure control valve a res respective greater pressure at two inputs of the at least one ABS pressure control valve, and wherein the at least one changeover valve ensures that a brake pressure corresponding to a driver's brake pressure request, which is higher than a last highest brake pressure during a period of automatically maintained braking always takes priority, since the at least one changeover valve passes a higher driver-dependent brake pressure to at least one of the brake cylinders.