SERVICE BRAKE CONTROL SYSTEM FOR A COMBINATION VEHICLE.

Abstract

A service brake control system for a combination vehicle that includes a towing member and first and second towed members includes an electro-pneumatic brake control valve in the first towed member that supplies fluid pressure through a supply port in response to an electronic control signal that is generated by a brake controller in the towing member.A dual check valve includes a first fluid supply port in communication with a forward fluid coupling on the first towed member that supplies a first fluid control signal from the towing member, a second fluid supply port in communication with the supply port of the electro-pneumatic brake control valve, and a fluid supply port in communication with a rear fluid coupling on the first towed member that supplies a second fluid control signal from the dual check valve to the second towed member.

Images