초록 ▼

A fluid pathway is provided with a flow controller in at least a portion of its length wherein the flow controller comprises an active surface capable of influencing the fluid flow through the fluid pathway, the configuration of the active surface conforming to at least one logarithmic curve conform

A fluid pathway is provided with a flow controller in at least a portion of its length wherein the flow controller comprises an active surface capable of influencing the fluid flow through the fluid pathway, the configuration of the active surface conforming to at least one logarithmic curve conforming to the Golden Section.

대표청구항 ▼

What is claimed is: 1. A system for attenuating sound in a combustion engine, the system comprising: an exhaust pipe coupled to and extending away from a combustion engine, the exhaust pipe channeling gas flow away from the combustion engine; and an attenuation chamber coupled to the exhaust pipe b

What is claimed is: 1. A system for attenuating sound in a combustion engine, the system comprising: an exhaust pipe coupled to and extending away from a combustion engine, the exhaust pipe channeling gas flow away from the combustion engine; and an attenuation chamber coupled to the exhaust pipe by an inlet configured to receive the gas flow channeled away from the combustion engine by the exhaust pipe, the attenuation chamber including a curvature that unfolds at a substantially constant order of growth when measured at equiangular radii between the inlet and an outlet coupled to the attenuation chamber, the curvature inducing a vortical flow that reduces turbulence and decreases audible sound associated with the gas flow, wherein the attenuation chamber is larger in volume than the inlet thereby allowing the gas flow to expand within the attenuation chamber, the expansion of the gas flow resulting in a decrease in the speed of the gas flow as the gas flow passes through the outlet, the decrease in speed of the gas flow resulting in a further reduction in audible sound associated with the gas flow. 2. The system of claim 1, wherein the attenuation chamber includes a baffle to further decrease the speed of the gas flow. 3. A system for attenuating sound in a combustion engine, the system comprising: an exhaust pipe coupled to and extending away from a combustion engine, the exhaust pipe channeling gas flow away from the combustion engine, wherein the exhaust pipe includes a curvature that unfolds at a substantially constant order of growth when measured at equiangular radii from the combustion engine to an inlet of the attenuation chamber, the curvature inducing a vortical flow in the gas flow that reduces turbulence and decreases audible sound associated with the gas flow; and an attenuation chamber coupled to the exhaust pipe by the inlet, the inlet configured to receive the gas flow channeled away from the combustion engine by the exhaust pipe, wherein the attenuation chamber is larger in volume than the inlet thereby allowing the gas flow to expand within the attenuation chamber, the expansion of the gas flow resulting in a decrease in the speed of the gas flow as the gas flow passes through the outlet, the decrease in speed of the gas flow resulting in a further reduction in audible sound associated with the gas flow.