Back to results
US 2025/0140227 A1Published application
Broadband silencer using acoustic metamaterial and method of designing the same
AssigneeAjou University Industry-Academic Cooperation Foundation
InventorsJin Woo LEE, Jae Ho CHO
Life of this patent
Estimating the term…
Abstract
A method of designing a silencer by using an acoustic metamaterial according to the present disclosure includes distributing design variables through an experimental design method, performing optimal design on initial design proposals, obtaining an insertion loss of an optimal unit cell, and selecting a unit cell to be used first for effective noise reduction.
Claims8
A silencer mounted on an exhaust pipe of an internal combustion engine, comprising:
- an exhaust flow pipe having an inlet formed on a first side for exhaust air of the internal combustion engine to flow in, an outlet formed on a second side for the exhaust air to flow out, and a flow path formed inside the exhaust flow pipe for the exhaust air to flow from the first side to the second side;
- and
- multiple unit cells provided inside the silencer in a longitudinal direction of the exhaust flow pipe to reduce noise in a corresponding frequency band among exhaust noises flowing along the exhaust flow pipe.
A method of designing a silencer by using an acoustic metamaterial, the method comprising:
- distributing design variables through an experimental design method;
- performing optimal design on initial design proposals;
- obtaining an insertion loss of an optimal unit cell;
- and
- selecting a unit cell to be preferentially used for effective noise reduction.
2 more elements
Dependencies are inferred from the claim text.