| 摘要 |
The invention relates to a control valve for automatic compressed-air brakes for generating a brake cylinder pressure (C) in at least one connected brake cylinder (4) in accordance with a pressure difference between a pressure (L) in a connected main brake pipe (6) of a train and a stored reference pressure (A), comprising a main part (1), a support (2) and a pipe part (3), the main part (1) comprising the following parts: a control piston (7), said control piston being subjected, on the one hand, to the reference pressure (A) and, on the other hand, to a control pressure (S) and at least one pressure spring (13), and a compensating piston (8) that is subjected to the pressure (C) of the brake cylinder (4) against the force of at least one pressure spring (20), and a double-seat valve (10), comprising an inlet valve (103) adapted to open via a piston rod (16) of the control piston (7) when the control piston (7) approaches and an outlet valve (101) adapted to open when the control piston (7) moves away, wherein the inlet valve (103) is located in an air path from an air storage reservoir (5) in the direction of the brake cylinder (4), whereas the outlet valve (101) is located in an air path from the brake cylinder (4) to the surroundings (O), the cross section of the air path from the air storage reservoir (5) via the opened inlet valve (103) being at least equal to the cross section required for achieving the shortest normative braking time at the greatest possible amount of air in the at least one brake cylinder. |
