Axle valve module and relay valve module of a compressed-air brake system

摘要

The invention relates to an axle valve module (2 ') of a compressed air brake system for the actuation of the wheel brakes of a vehicle axle of a wheeled vehicle, with a relay valve (26), to whose control pressure input (36) a control pressure line (48) is connected, which alternately via a changeover valve (74) with a braking pressure line leading to an applied brake pressure line (20 ') or with a supply pressure leading supply pressure line (14') is connectable, and each having an ABS inlet valve (28, 30, 32, 34) and an ABS outlet valve (30, 34 ) for at least one wheel brake cylinder each side of the vehicle axle, which are each designed as a pressure-controlled diaphragm valve with an associated pilot valve (62, 64, 66, 68), these pilot valves are designed as clocked controllable 3/2-way solenoid valves, over the in each case one control pressure chamber of the associated diaphragm valve alternately with one on a to the working pressure output (40) the relay valve (26) connected Achsbremsleitung (56) or at the control pressure line (48) of the relay valve (26) tapped control pressure or with the ambient pressure can be acted upon. In order to allow the setting of an exact same brake pressure in the wheel brake cylinders on both sides of the vehicle axle in the context of certain driving safety functions, in the control pressure line (48) of the relay valve (26) between the switching valve (50, 74) and the control pressure input (36) of the relay valve ( 26) or the branch of a control pressure line (70 ') of the ABS valves (28, 30, 32, 34) a shut-off valve (76) arranged by means of which the control pressure applied to the control pressure input (36) of the relay valve (26) is enclosed if necessary ,