Patent ID: 7510050

Claim:
A vehicular exhaust system for modifying at least one pressure wave of at least one moving fluid, said system comprising: a fluid transfer conduit having an inlet and an outlet, the fluid transfer being conduit adapted to transfer the at least one moving fluid from the inlet to the outlet; and at least one energy dissipater adapted to dissipate energy from the at least one pressure wave during such transfer of the at least one moving fluid by the fluid transfer conduit each energy dissipater comprising a collection chamber having a length L, for receiving a portion of the at least one moving fluid as the fluid transfers through the fluid transfer conduit to modify the at least one pressure wave; and a plurality of apertures adapted to pass the at least one portion of the at least one pressure wave from the fluid transfer conduit to the collection chamber; wherein the plurality of apertures and the at least one energy dissipater possess a particular configuration adapted to minimally hinder the flow of high speed exhaust gas pulses downstream through the exhaust system while reducing backpressure waves upstream through the exhaust system, wherein the configuration of the plurality of apertures includes a ratio that ensures each of the plurality of apertures comprises an effective diameter that is 5% of the length L of the collection chamber, wherein the ratio reduces the resonance of the collection chamber due to exhaust pulse frequencies.