Modulator for generating a pressure change, pneumatic vehicle system, commercial vehicle, and method for controlling a pneumatic pressure in a pneumatic load by open-loop or closed-loop control

A modulator (20;

• 124, 127, 129) for generating a pressure change, the modulator comprising:
• a control-pressure input (24) for receiving a control pressure (Pcc),
• a pressurized-gas input (21;
• 51),
• at least one pressurized-gas output (22;
• 22, 22′;
• 22, 52;
• 22, 22′, 52, 52′),
• a first venting path (25) and a second venting path (26) for venting a pneumatic load (11;
• 11, 11′;
• 11, 50;
• 125, 128, 130), at least part of the first venting path (25) being different from at least part of the second venting path (26),
• a relay valve (30;
• 30′) that is pneumatically controllable by the control pressure (Pcc) and has at least a first valve position and a second valve position, the relay valve (30;
• 30′) being configured to provide, in the first valve position, a fluidic connection between the pressurized-gas input (21;
• 51) and the at least one pressurized-gas output (22;
• 22, 22′;
• 22, 52;
• 22, 22′, 52, 52′) and to provide, in the second valve position, a fluidic connection between the at least one pressurized-gas output (22;
• 22, 22′;
• 22, 52;
• 22, 22′, 52, 52′) and the first venting path (25) for the purpose of venting the pneumatic load (11;
• 11, 11′;
• 11, 50;
• 125, 128, 130), and
• a vent valve (40;
• 40′) that is pneumatically controllable by the control pressure (Pcc) and that is configured to selectively provide, in dependence on the control pressure (Pcc), a fluidic connection between the at least one pressurized-gas output (22;
• 22, 22′;
• 22, 52;
• 22, 22′, 52, 52′) and the second venting path (26) for the purpose of venting the pneumatic load (11;
• 11, 11′;
• 11, 50;
• 125, 128, 130).