초록 ▼

A trailer brake valve (1) is to be mounted in a compressed air brake system of a trailer of a truck. The brake system of the trailer includes an anti lock control unit and a load sensing control unit. The trailer brake valve (1) includes a housing (2), a relay piston (3) being movably guided in the

A trailer brake valve (1) is to be mounted in a compressed air brake system of a trailer of a truck. The brake system of the trailer includes an anti lock control unit and a load sensing control unit. The trailer brake valve (1) includes a housing (2), a relay piston (3) being movably guided in the housing (2) and a control chamber (4). A brake chamber (5) includes connections (31) for conduits leading to brake cylinders (33) of the brake system. The control chamber (4) and the brake chamber (5) are defined by the relay piston (3). A brake conduit (7) is connected to the control chamber (4). A reservoir chamber (47) and an outlet valve (43, 54) are located in the housing (2) and an inlet valve (43, 51) is located adjacent the reservoir chamber (47). A first solenoid valve (8) is arranged in the brake conduit (7) and a second solenoid valve (18) is designed and arranged to deaerate the control chamber (4). A first pressure/voltage converter (16) senses control pressure prevailing in the control conduit (7) and a second pressure/voltage (17) converter senses pressure prevailing in a region adjacent the relay piston (3). A load sensing control unit (26) is designed and arranged to produce a load signal and an independent electronic control (22) unit is designed and arranged to control the first and second solenoid valve (8, 18) exclusively with the load signal produced by the load sensing control unit (26).

대표청구항 ▼

1. A trailer brake valve (1) to be used in a compressed air brake system of a trailer including an anti lock control unit (37) and a load sensing control unit (26), comprising:a housing (2); a relay piston (3) being movably guided in said housing; a control chamber (4) being located in said housing

1. A trailer brake valve (1) to be used in a compressed air brake system of a trailer including an anti lock control unit (37) and a load sensing control unit (26), comprising:a housing (2); a relay piston (3) being movably guided in said housing; a control chamber (4) being located in said housing on one side of said relay piston (3); a brake chamber (5) being located in said housing on the other side of said relay piston and including connections (31) for pneumatic conduits (32) leading to brake cylinders (33) of a brake system, said control chamber (4) and said brake chamber (5) being defined by said relay piston (3); a brake conduit (7) being connected to said control chamber (4); an inlet valve (43, 51) being located adjacent said reservoir chamber (47); an outlet valve (45, 54) being located in said housing; a first solenoid valve (8) adapted to control the control pressure prevailing in said brake conduit (7); a second solenoid valve (18) being designed and arranged to deaerate said control chamber; a first pressure/voltage converter (16) being designed and arranged to sense control pressure prevailing in said brake conduit (7) for detecting whether and which braking action is required; a second pressure/voltage converter (17) being designed and arranged to sense control pressure prevailing in a region on one of the sides of said relay piston (3) for detecting whether and which pressure is urging said relay piston (3); a load sensing control unit (26) being designed to detect the pressure of the bellows (30) and arranged to produce a load signal in response to the loading of the trailer with goods; and an independent electronic control unit (22) being designed and arranged to control said first and second solenoid valve with the load signal produced by said load sensing control unit (26) and not with an antilock signal produced by said antilock control unit (37).