NOISE REDUCTION SYSTEMS FOR QUICK RELEASE VALVES

A noise-reduction system for pneumatic quick release valves includes a module attachable to an exhaust outlet of an existing valve or integrated directly into a valve housing. Noise reduction may be achieved using either a single asymmetric discharge outlet or multiple outlets, depending on implementation. In various embodiments, noise reduction is achieved using expansion chambers, turbulence-generating features, or exhaust-port geometries—including single or multiple non-circular outlets—configured to disrupt coherent airflow and reduce tonal and broadband noise. Optional features include resonator cavities, micro-structured liners, perforated elements, porous or composite media, and additive-manufactured structures. The system may be implemented as a retrofit module or as part of an original-equipment valve assembly and may include sensors or diagnostic features for performance monitoring. The disclosed designs maintain required brake-system performance and durability for heavy-duty vehicle environments.