Exhaust processor with variable tuning system
First Claim
1. An exhaust processor comprisinga housing defining an interior region and having an inlet and an outlet, a flow conduit located in the interior region of the housing to conduct engine combustion product from the inlet to the outlet, a static tuning volume located in the interior region of the housing and separate from the flow conduit, a longitudinally extending tuning tube positioned to lie in the interior region of the housing to extend into the static tuning volume, the tuning tube being formed to include an inlet opening positioned to receive therein engine combustion product extant in the flow conduit and an outlet opening arranged to lie in the static tuning volume and to place the static tuning volume in acoustic communication with acoustic waves associated with engine combustion product in the tuning tube, and a regulator mounted for movement in the static tuning volume longitudinally alongside the tuning tube to vary the size of the outlet opening formed in the tuning tube.
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Accused Products
Abstract
An exhaust processor comprises a Helmholtz resonance chamber with a variable tuning throat. The tuning frequency of the exhaust processor changes as the outlet opening from the variable tuning throat into the Helmholtz resonance chamber changes.
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Citations
13 Claims
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1. An exhaust processor comprising
a housing defining an interior region and having an inlet and an outlet, a flow conduit located in the interior region of the housing to conduct engine combustion product from the inlet to the outlet, a static tuning volume located in the interior region of the housing and separate from the flow conduit, a longitudinally extending tuning tube positioned to lie in the interior region of the housing to extend into the static tuning volume, the tuning tube being formed to include an inlet opening positioned to receive therein engine combustion product extant in the flow conduit and an outlet opening arranged to lie in the static tuning volume and to place the static tuning volume in acoustic communication with acoustic waves associated with engine combustion product in the tuning tube, and a regulator mounted for movement in the static tuning volume longitudinally alongside the tuning tube to vary the size of the outlet opening formed in the tuning tube.
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11. An exhaust processor comprising
a housing defining an interior region and having a housing inlet and a housing outlet, a static tuning volume located in the interior region, a chamber located in the interior region to receive engine combustion product from the housing inlet, a first tube extending from the chamber through the static tuning volume to the housing outlet to conduct engine combustion product from the chamber through the static tuning volume to the housing outlet, a longitudinally extending tuning tube located in the static tuning volume, the tuning tube including a tube inlet located to receive engine combustion product from the chamber and a tube outlet located in the static tuning volume for acoustic communication between the tuning tube and the static tuning volume through the tube outlet, and a regulator mounted for movement in the static tuning volume longitudinally alongside the tuning tube to vary the size of the tube outlet formed in the tuning tube.
Specification