发明名称 |
Induction system with low pass filter for turbo charger applications |
摘要 |
A flow tube for an induction system with a turbo charger defines a longitudinal flow path and includes a noise attenuation plate positioned within the flow tube. A plurality of ribs formed on an internal surface of the tube. The ribs are spaced apart from one another and are tuned to a desired frequency. The noise attenuation plate includes a plurality of holes having varying diameter and depths. When acoustic energy created by the turbo charger encounters the noise attenuation plate and the ribs, the change in impedance results in acoustic reflections back toward the turbo charger. Thus the noise attenuation plate cooperates with the ribs to serve as a low pass filter that attenuates high frequencies while allowing lower frequencies through.
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申请公布号 |
US6688425(B2) |
申请公布日期 |
2004.02.10 |
申请号 |
US20020267980 |
申请日期 |
2002.10.09 |
申请人 |
SIEMENS VDO AUTOMOTIVE, INC. |
发明人 |
COLE RODERIC;LETOURNEAU MARK;PETTIPIECE JASON |
分类号 |
F02B33/44;F02B37/00;F02M35/12;F04D29/66;(IPC1-7):F01N1/02 |
主分类号 |
F02B33/44 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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