Environmentally robust noise attenuation system
    12.
    发明授权
    Environmentally robust noise attenuation system 有权
    环保强噪声衰减系统

    公开(公告)号:US06775384B2

    公开(公告)日:2004-08-10

    申请号:US09931394

    申请日:2001-08-16

    CPC classification number: F02M35/125 B60K13/02 G10K11/178

    Abstract: The air induction system comprises an air induction body with a mouth and a speaker forming an interface with the mouth. A fender portion of a vehicle at least partially covers the interface, protecting the interface from environmental conditions. A control unit controls with the speaker to thereby generate a noise attenuating sound.

    Abstract translation: 空气感应系统包括具有口部的空气感应体和形成与口部接口的扬声器。 车辆的挡泥板部分至少部分地覆盖接口,从而保护接口免受环境条件的影响。 控制单元与扬声器一起控制,从而产生噪声衰减声音。

    Active dipole inlet using drone cone speaker driver
    13.
    发明授权
    Active dipole inlet using drone cone speaker driver 有权
    主动偶极子入口使用无人机锥形扬声器驱动器

    公开(公告)号:US06557665B2

    公开(公告)日:2003-05-06

    申请号:US09858414

    申请日:2001-05-16

    CPC classification number: G10K11/178 G10K2210/128 G10K2210/3212 H04R1/2834

    Abstract: An air induction system comprises an air induction body, a speaker with a first diaphragm disposed about the air induction body, and a second diaphragm spaced from the first diaphragm. A signal is generated from the first diaphragm and transmitted to the second diaphragm. The second diaphragm generates a noise attenuating sound.

    Abstract translation: 空气感应系统包括空气感应体,具有围绕空气感应体设置的第一隔膜的扬声器和与第一隔膜间隔开的第二隔膜。 信号从第一光阑产生并被传送到第二光阑。 第二个隔膜产生噪音衰减的声音。

    Variably tuned Helmholtz resonator with linear response controller
    14.
    发明授权
    Variably tuned Helmholtz resonator with linear response controller 失效
    可变调谐亥姆霍兹谐振器与线性响应控制器

    公开(公告)号:US5771851A

    公开(公告)日:1998-06-30

    申请号:US902454

    申请日:1997-07-29

    Applicant: Ian R. McLean

    Inventor: Ian R. McLean

    CPC classification number: F02M35/1222 F02M35/1261

    Abstract: A variably tuned Helmholtz resonator which has a connection establishing fluid communication between fixed volume chamber and a duct of an induction system for an internal combustion engine. The tubular connection has a special configuration which affects changes in open area and length of the tubular connection so as to create a linear relationship between the resonant frequency and the angular position of the tuning plate. The tuning plate is positioned correspondingly to engine speed to provide noise attenuation over a wide range of engine speeds.

    Abstract translation: 一种可变调谐的亥姆霍兹共振器,其具有在固定容积室和用于内燃机的感应系统的管道之间建立流体连通的连接。 管状连接具有影响管状连接的开口面积和长度变化的特殊构造,以便在谐振频率和调谐板的角度位置之间产生线性关系。 调谐板相应于发动机转速定位,以便在大范围的发动机转速下提供噪声衰减。

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