Patent ID: 11958450
Assignee: ZF CV SYSTEMS EUROPE BV
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 9:
10. A compressed-air braking system (DBA*) for a motor vehicle, the compressed-air braking system comprising:
a compressed-air supply device (1) with a compressor (2) and
several brake circuits which are connected to the compressed-air supply device (1) via a multi-circuit protection valve (7), and include at least one parking brake circuit with parking brake cylinders (25.1, 25.2),
a quick-venting valve (29) connected to the parking brake cylinders (25.1, 25.2) and configured to vent the parking brake cylinders,
a changeover valve (30) downstream from the quick-venting valve (29) and connected to the quick-venting valve (29) via an output line (38) therefrom,
a reservoir (31) downstream from the changeover valve (30),
wherein the parking brake cylinders (25.1, 25.2) are configured to be vented, per wheel or per vehicle axle, to both the surrounding atmosphere and into the reservoir (31) via the changeover valve (30),
wherein the parking brake cylinders (25.1, 25.2) vent to either the surrounding atmosphere or into the reservoir depending on a pressure level at the changeover valve (30).