Hybrid valve for attenuation of low frequency noise

摘要

A hybrid valve assembly for an exhaust system includes an exhaust tube having a bore defining an exhaust flow path. A vane is mounted within the bore and is moveable between an open position and a closed position. A resilient member biases the vane toward the closed position. A valve actuator has an ON position where movement of the vane is actively controlled by the valve actuator and an OFF position where movement of the vane is passively controlled by exhaust gas flow.

主权项

1. A valve assembly for an exhaust system comprising:
an exhaust tube having a bore defining an exhaust flow path, said exhaust tube having one end to be connected to a first exhaust component and a second end to be connected to a second exhaust component; a vane mounted within said bore and being moveable between an open position and a closed position; a resilient member that biases said vane toward said closed position; and a valve actuator having an ON position where movement of said vane is actively controlled by said valve actuator as said vane moves between a fully open position and a fully closed position and an OFF position where movement of said vane is passively controlled by exhaust gas flow as said vane moves between the fully open position and the fully closed position, and wherein the fully open position defines a maximum open area of the exhaust flow path and the fully closed position defines a minimum open area of exhaust flow path.