Braking method for commercial vehicle with trailer or semi-trailer involves opening intact brake circuits and trailer system control and supply circuit even below set valve closing pressure

摘要

The method involves a controlled multi-circuit safety valve opening intact brake circuits and the trailer system control and supply circuit with compressed air from at least one compressed air storage tank for the duration of a braking process or for part of a long braking process, even below the set closing pressure for its valve. The tractor vehicle has at least two brake circuits, each with a compressed air storage tank (15,16) for braking the tractor and a control/filling circuit for the trailer brake circuit (20) and a multi-circuit safety valve that closes the trailer and the control/filling circuit for the trailer at a defined lower tank pressure, an electronic/pneumatic brake value generator and an electronic brake controller or on-board computer. A controlled multi-circuit safety valve (13) opens intact brake circuits (17'',18'') and the trailer system control and supply circuit (27,27',26) with compressed air from at least one tank for the duration of a braking process or for part of a long braking process, even below the set closing pressure for its valve. An Independent claim is also included for an arrangement for braking a commercial vehicle with a trailer.