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公开(公告)号：US07503424B2
公开(公告)日：2009-03-17
申请号：US11316041
申请日：2005-12-22
申请人： Adam Joe Shuttleworth , Jeffrey John Girard , Paul Thomas Bruss , James Reginald Byrd , Jason Michael Edgington , Loren Avan DeVries
发明人： Adam Joe Shuttleworth , Jeffrey John Girard , Paul Thomas Bruss , James Reginald Byrd , Jason Michael Edgington , Loren Avan DeVries
IPC分类号： G10K11/172
CPC分类号： B60R13/0815 , B60R11/0217 , B60R13/0225 , B60R2013/0287
摘要： A vehicle cab noise suppressing system includes a cab interior panel having an opening exposed to acoustic noise in the cab, an acoustic resonator chamber, and a conduit communicating the resonator chamber to the opening. The resonator chamber is formed by a plurality of walls which are spaced apart from the interior panel and which are formed by a second panel. A third panel cooperates with the walls to enclose the resonator chamber. The chamber volume and the diameter and length of the conduit are chosen so as to acoustically tune the chamber to a noise frequency in the cab and thereby reduce noise in the cab.
摘要翻译： 车辆驾驶室噪声抑制系统包括驾驶室内部面板，驾驶室内部面板具有暴露于驾驶室内的声学噪声的开口，声学谐振腔，以及将谐振器室连通到开口的导管。 谐振腔由多个与内板隔开并由第二面板形成的壁形成。 第三面板与壁配合以包围谐振腔。 导管的容积和导管的直径和长度被选择为将腔室声学调谐到驾驶室内的噪声频率，从而降低驾驶室内的噪音。
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公开(公告)号：US20110108358A1
公开(公告)日：2011-05-12
申请号：US12613877
申请日：2009-11-06
IPC分类号： F02M35/12
CPC分类号： F02M35/1266
摘要： A resonator attenuates sound waves at first and second frequencies. The resonator includes a first tube, and a second tube received within the first tube. Both tubes have an open end and a closed end. The first tube has an axial length which is longer than the axial length of the second tube. The first tube attenuates sound waves at the first frequency and the second tube attenuates sound waves at the second frequency. The second tube has an outer wall which engages an inner wall of the first tube. The open end of the second tube is surrounded by the open end of the first tube. The open end of the first tube is attached to an engine air intake conduit. The conduit communicates air from a charge air cooler to an engine intake manifold.
摘要翻译： 谐振器在第一和第二频率衰减声波。 谐振器包括第一管，以及容纳在第一管内的第二管。 两个管都有开口端和封闭端。 第一管具有比第二管的轴向长度更长的轴向长度。 第一管衰减第一频率的声波，第二管衰减第二频率的声波。 第二管具有与第一管的内壁接合的外壁。 第二管的开口端由第一管的开口端包围。 第一管的开口端连接到发动机进气管。 导管将空气从增压空气冷却器连接到发动机进气歧管。
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公开(公告)号：US20110133680A1
公开(公告)日：2011-06-09
申请号：US12633003
申请日：2009-12-08
IPC分类号： H02P1/04
CPC分类号： H02P1/04
摘要： The invention relates to a method of control fan speed in a fan speed control system having a cooling fan driven by a motor, a motor driver for driving the motor at a speed corresponding to a fan speed control signal, and an electronic control unit (ECU) for generating the fan speed control signal. The method includes generating a fan speed control signal and communicating the fan speed control signal to the motor driver so that the motor driver drives the motor at a speed corresponding to the fan speed control signal. If the fan speed control signal is at a level below a noisy fan speed range, then the ECU maintains the fan speed control signal below the noisy fan speed range until the ECU commands a fan speed above the noisy fan speed range. If the fan speed control signal is at a level above the noisy fan speed range, then the ECU maintains the fan speed control signal at a level above the noisy fan speed range until the ECU commands a fan speed below the noisy fan speed range. The method may also include generating a minimum fan speed control signal so that the motor driver drives the motor at a lowest speed that will allow the cooling fan to provide a desired cooling effect.
摘要翻译： 本发明涉及一种风扇转速控制系统中控制风扇转速的方法，该风扇转速控制系统具有由电动机驱动的冷却风扇，以与风扇转速控制信号对应的速度驱动电动机的电动机驱动器以及电子控制单元 ），用于产生风扇速度控制信号。 该方法包括产生风扇速度控制信号并将风扇速度控制信号传送到电动机驱动器，使得电动机驱动器以对应于风扇速度控制信号的速度驱动电动机。 如果风扇转速控制信号处于低于噪声风扇转速范围的水平，则ECU将风扇转速控制信号保持在嘈杂风扇转速范围以下，直到ECU将风扇转速高于嘈杂的风扇转速范围。 如果风扇转速控制信号处于高于噪声风扇转速范围的水平，则ECU将风扇转速控制信号保持在高于嘈杂风扇转速范围的水平，直到ECU将风扇转速低于嘈杂的风扇转速范围。 该方法还可以包括产生最小风扇速度控制信号，使得电动机驱动器以最低速度驱动电动机，其将允许冷却风扇提供期望的冷却效果。
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