公开(公告)号：US20060254870A1

公开(公告)日：2006-11-16

申请号：US11246029

申请日：2005-10-07

申请人： Balarama Murty ,  Chandra Namuduri ,  Jie Tong ,  Kenneth Shoemaker

发明人： Balarama Murty ,  Chandra Namuduri ,  Jie Tong ,  Kenneth Shoemaker

IPC分类号： F16D27/00

CPC分类号： F16D37/02 ,  F16D2037/004

摘要： A magneto-rheological coupling (MRC) is provided having an input assembly operable to receive a torque input and an output member operable to selectively transmit torque to a driveshaft. A magneto-rheological fluid, or MRF, having a variable viscosity in response to a magnetic flux field is operable to vary the torque transmitted from the input assembly to the output member. At least one annular lip forming a magneto-rheological fluid retention pocket is provided on at least one of the input assembly and the output member of the MRC. The annular lip is operable to direct MRF away from a roller bearing, thereby reducing the likelihood of MRF fluid incursion within the roller bearing. Additionally, a labyrinth seal may be employed to provide additional protection to the bearing. The labyrinth seal may have an annular bushing disposed therein to reduce the clearances of the labyrinth seal.

摘要翻译： 提供磁流变耦合（MRC），其具有可操作以接收扭矩输入的输入组件和可操作以选择性地将扭矩传递到驱动轴的输出构件。 响应于磁通场具有可变粘度的磁流变流体或MRF可操作以改变从输入组件传递到输出构件的扭矩。 在MRC的输入组件和输出构件中的至少一个上提供形成磁流变流体保持袋的至少一个环形唇缘。 环形唇缘可操作以将MRF引导离开滚子轴承，从而减少在滚子轴承内MRF流体侵入的可能性。 此外，可以采用迷宫式密封件来为轴承提供额外的保护。 迷宫式密封件可以具有设置在其中的环形衬套，以减少迷宫式密封件的间隙。

公开(公告)号：US20080041677A1

公开(公告)日：2008-02-21

申请号：US11974133

申请日：2007-10-11

申请人： Chandra Namuduri

发明人： Chandra Namuduri

IPC分类号： F16F9/53 ,  B60G17/016

CPC分类号： F16F9/535 ,  B60G17/0152 ,  B60G17/08 ,  B60G2200/142 ,  B60G2202/135 ,  B60G2202/312 ,  B60G2400/252 ,  B60G2400/821 ,  B60G2500/10 ,  B60G2800/162

摘要： A controllable magnetorheological (MR) damper having first, second and third portions is disclosed. The first and second portions have a translational degree of freedom therebetween, and the third portion has a rotational degree of freedom with respect to the first and second portions. The first and third portions are coupled via a translation-to-rotation converter, and the second and third portions are coupled via a magnetorheological (MR) fluid. A bearing is disposed between the first and second portions for supporting a side load therebetween, a magnetic field generator is in field communication with the magnetorheological fluid, and a signal path is in signal communication with the magnetic field generator. The third portion is rotationally responsive to translational motion between the first and second portions, the shear stress characteristic of the magnetorheological fluid is responsive to the magnetic field generator, and the magnetic field generator is controllably responsive to an excitation signal from the signal path.

摘要翻译： 公开了一种具有第一，第二和第三部分的可控磁流变（MR）阻尼器。 第一和第二部分之间具有平移自由度，并且第三部分具有相对于第一和第二部分的旋转自由度。 第一和第三部分通过平移到旋转转换器耦合，并且第二和第三部分经由磁流变（MR）流体耦合。 轴承设置在第一和第二部分之间用于支撑它们之间的侧向载荷，磁场发生器与磁流变流体现场连通，信号路径与磁场发生器信号通信。 第三部分对第一和第二部分之间的平移运动进行旋转响应，磁流变流体的剪切应力特性响应于磁场发生器，并且磁场发生器可控地响应于来自信号路径的激励信号。

公开(公告)号：US20070234980A1

公开(公告)日：2007-10-11

申请号：US11399669

申请日：2006-04-06

申请人： Chandra Namuduri ,  David Rule ,  Balarama Murty

发明人： Chandra Namuduri ,  David Rule ,  Balarama Murty

IPC分类号： F01P5/10

CPC分类号： F01P7/164 ,  F01P5/12 ,  F01P2037/02

摘要： An engine coolant pump drive system for a vehicle having an engine, an engine coolant system, and at least one sensor for sensing at least one operational condition of the vehicle is disclosed. The pump drive system includes a magnetorheological fluid (MRF) clutch, and a coolant pump. The MRF clutch includes a torque input section coupled to a torque output section via a MRF, the torque input section being configured to receive a torque input from the engine. The coolant pump is configured for operable communication with the torque output section of the MRF clutch. In response to a signal from the at least one sensor, the MRF clutch is configured to provide a continuously variable torque transfer from the torque input section to the torque output section, thereby providing for variable coolant flow in the engine coolant system via the coolant pump capable of a continuously variable speed.

摘要翻译： 公开了一种用于车辆的发动机冷却剂泵驱动系统，其具有用于感测车辆的至少一个操作状态的发动机，发动机冷却剂系统和至少一个传感器。 泵驱动系统包括磁流变流体（MRF）离合器和冷却剂泵。 MRF离合器包括经由MRF联接到扭矩输出部的扭矩输入部，扭矩输入部构造成接收来自发动机的扭矩输入。 冷却剂泵配置成与MRF离合器的扭矩输出部分可操作地连通。 响应于来自至少一个传感器的信号，MRF离合器被配置为提供从扭矩输入部分到扭矩输出部分的连续可变的扭矩传递，从而通过冷却剂泵提供发动机冷却剂系统中的可变冷却剂流 能够连续变速。

公开(公告)号：US20050121269A1

公开(公告)日：2005-06-09

申请号：US10730440

申请日：2003-12-08

申请人： Chandra Namuduri

发明人： Chandra Namuduri

IPC分类号： F16F9/53

CPC分类号： F16F9/53 ,  F16F2232/06

摘要： An improved damping apparatus that utilizes a fluid having a viscosity that may be varied by the application of an electromagnetic field, such as a magnetorheological fluid or an electrorheological fluid, to provide the damping response. The damping apparatus includes a linear to rotary conversion mechanism which comprises a translatable member that is adapted for linear translation in a forward and a reverse direction and a rotatable member comprising a rotatable shaft that is rotatably coupled to the translatable member; wherein translation of the translatable member in one of the forward or the reverse directions produces a forward or a reverse rotation of the rotatable member and shaft, respectively. The damping apparatus also includes a damping mechanism which comprises a hub that is fixed to the shaft, a means for generating a variable electromagnetic field in response to an applied electrical signal that may be continuously varied in response to an input signal that is representative of a desired damping force and a fluid having a viscosity that may be continuously varied by application of the electromagnetic field that is in touching contact with the hub. Application of the variable electromagnetic field to the fluid produces changes in the viscosity of the fluid that in turn provides variable resistance to rotation of the hub and resistance to translation of the translatable member, thereby providing a damping apparatus with a continuously variable damping response.

摘要翻译： 一种改进的阻尼装置，其利用具有可通过施加电磁场（例如磁流变流体或电流变流体）而变化的粘度的流体，以提供阻尼响应。 阻尼装置包括线性到旋转转换机构，其包括适于沿正向和反向的直线平移的可平移构件和包括可旋转地联接到可平移构件的可旋转轴的可旋转构件; 其中可转动构件在正向或反向中的一个方向上的平移分别产生可旋转构件和轴的向前或反向旋转。 阻尼装置还包括阻尼机构，该阻尼机构包括固定到轴的轮毂，用于响应于施加的电信号产生可变电磁场的装置，该电信号可以响应于代表 期望的阻尼力和具有可以通过施加与轮毂接触的电磁场而连续变化的粘度的流体。 将可变电磁场施加到流体产生流体粘度的变化，这又导致轮毂的旋转的可变阻力和对可平移构件的平移的抵抗力，从而提供具有连续可变阻尼响应的阻尼装置。

公开(公告)号：US20060245929A1

公开(公告)日：2006-11-02

申请号：US11106116

申请日：2005-04-14

申请人： Mike McDonald ,  Chandra Namuduri

发明人： Mike McDonald ,  Chandra Namuduri

IPC分类号： F04B49/10

CPC分类号： F04C15/0061 ,  B62D5/063

摘要： An apparatus and method for monitoring and diagnosing the coil temperature of a magnetorheological (MR) clutch connected to a power steering pump of a vehicle is disclosed. The apparatus includes a processing circuit, and a storage medium, readable by the processing circuit, for storing instructions for execution by the processing circuit for receiving a plurality of input signals representative of dynamic operating conditions relating to the vehicle, using the input signals to generate an output signal representative of a temperature of the coil of the MR clutch, determining from the output signal whether the temperature of the coil exceeds a threshold limit, and in response to the temperature of the coil exceeding a threshold limit, triggering at least one of a remedial action and a data storage algorithm.

摘要翻译： 公开了一种用于监测和诊断连接到车辆的动力转向泵的磁流变（MR）离合器的线圈温度的装置和方法。 该设备包括处理电路和可由处理电路读取的存储介质，用于存储用于由处理电路执行的指令，用于接收表示与车辆有关的动态操作条件的多个输入信号，使用输入信号产生 表示MR离合器的线圈的温度的输出信号，根据输出信号确定线圈的温度是否超过阈值极限，并且响应于线圈的温度超过阈值极限，触发至少一个 补救措施和数据存储算法。

公开(公告)号：US20060124413A1

公开(公告)日：2006-06-15

申请号：US11008419

申请日：2004-12-09

申请人： Chandra Namuduri

发明人： Chandra Namuduri

IPC分类号： F16F15/03

CPC分类号： F16F9/535 ,  B60G17/0152 ,  B60G17/08 ,  B60G2200/142 ,  B60G2202/135 ,  B60G2202/312 ,  B60G2400/252 ,  B60G2400/821 ,  B60G2500/10 ,  B60G2800/162

摘要： A controllable magnetorheological (MR) damper having first, second and third portions is disclosed. The first and second portions have a translational degree of freedom therebetween, and the third portion has a rotational degree of freedom with respect to the first and second portions. The first and third portions are coupled via a translation-to-rotation converter, and the second and third portions are coupled via a magnetorheological (MR) fluid. A bearing is disposed between the first and second portions for supporting a side load therebetween, a magnetic field generator is in field communication with the magnetorheological fluid, and a signal path is in signal communication with the magnetic field generator. The third portion is rotationally responsive to translational motion between the first and second portions, the shear stress characteristic of the magnetorheological fluid is responsive to the magnetic field generator, and the magnetic field generator is controllably responsive to an excitation signal from the signal path.

摘要翻译： 公开了一种具有第一，第二和第三部分的可控磁流变（MR）阻尼器。 第一和第二部分之间具有平移自由度，并且第三部分具有相对于第一和第二部分的旋转自由度。 第一和第三部分通过平移到旋转转换器耦合，并且第二和第三部分经由磁流变（MR）流体耦合。 轴承设置在第一和第二部分之间用于支撑它们之间的侧向载荷，磁场发生器与磁流变流体现场连通，信号路径与磁场发生器信号通信。 第三部分对第一和第二部分之间的平移运动进行旋转响应，磁流变流体的剪切应力特性响应于磁场发生器，并且磁场发生器可控地响应于来自信号路径的激励信号。

公开(公告)号：US20060052198A1

公开(公告)日：2006-03-09

申请号：US11112445

申请日：2005-04-22

申请人： Chandra Namuduri ,  Balarama Murty ,  Anthony Smith ,  Jie Tong ,  Mark Golden ,  John Ulicny

发明人： Chandra Namuduri ,  Balarama Murty ,  Anthony Smith ,  Jie Tong ,  Mark Golden ,  John Ulicny

IPC分类号： F16H3/72

CPC分类号： F16H48/30 ,  B60K17/3462 ,  B60K23/0808 ,  F16D37/02 ,  F16D2037/004 ,  F16H3/721 ,  F16H48/10 ,  F16H48/26 ,  F16H48/34 ,  F16H2048/106 ,  F16H2048/204 ,  F16H2048/346

摘要： A magnetorheological (MR) fluid coupling for vectoring torque with respect to a shaft capable of rotary motion is disclosed. The coupling includes a stator, a rotor having a rotational degree of freedom with respect to the stator and configured for physical communication with the shaft, and a magnetic field generator. The stator and rotor define an annular space therebetween and are coupled via a MR fluid disposed within the annular space. The magnetic field generator is in field communication with the MR fluid and is disposed to produce a substantially radially directed magnetic field across the annular space. The rotor is rotationally responsive to the application of a magnetic field at the MR fluid.

摘要翻译： 公开了一种用于相对于能够旋转运动的轴的矢量转矩的磁流变（MR）流体联轴器。 联轴器包括定子，具有相对于定子的旋转自由度并被配置为与轴物理连通的转子和磁场发生器。 定子和转子在它们之间限定一个环形空间，并通过布置在环形空间内的MR流体耦合。 磁场发生器与MR流体现场连通并被设置成跨越环形空间产生基本上径向定向的磁场。 转子响应于在MR流体处施加磁场而旋转。

公开(公告)号：US20060017290A1

公开(公告)日：2006-01-26

申请号：US10899212

申请日：2004-07-26

申请人： Balarama Murty ,  Chandra Namuduri

发明人： Balarama Murty ,  Chandra Namuduri

IPC分类号： F02N11/04 ,  H02P9/04

CPC分类号： H02P9/48 ,  F02D2041/2044 ,  F02N11/04 ,  F02N11/0814 ,  F02N2011/0896 ,  F02N2300/104 ,  Y02T10/48

摘要： A belted-alternator starter system that continuously provides pre-flux when the vehicle ignition is on and the engine is off to provide a faster torque response when the engine is turned on. The alternator/starter device operates as an alternator for providing electrical energy to vehicle electrical devices and the battery when the ignition is on and the engine is running, and operates as a starter for providing engine torque to start the engine when the engine is off and the ignition is on. The system further includes an inverter/rectifier circuit to provide AC current to the armature coils when the alternator/starter device is operating as a starter. The system provides an operating field current to the field coil when the ignition and the engine are on and provides a pre-flux field current to the field coil when the vehicle ignition is on and the engine is off.

公开(公告)号：US20060254871A1

公开(公告)日：2006-11-16

申请号：US11341786

申请日：2006-01-27

申请人： Balarama Murty ,  Chandra Namuduri ,  Kenneth Shoemaker

发明人： Balarama Murty ,  Chandra Namuduri ,  Kenneth Shoemaker

IPC分类号： F16D37/02

CPC分类号： F16D37/02 ,  F16D2037/004

摘要： A magneto-rheological coupling (MRC) having an input assembly and an output member. The output member includes a generally cylindrical drum portion and a hub portion extending radially inwardly therefrom. The generally cylindrical drum portion has a low magnetically permeable region having a plurality of passages defined therein. Additionally, a plurality of apertures are defined by the hub portion. The plurality of passages and apertures enhance the flow of magneto-rheological fluid (MRF) within the MRC. The drum portion has a surface treatment of tungsten-carbide to enhance wear resistance. Additionally, the drum portion has an average roughness, or Ra value, of between 10 and 250 microns.

摘要翻译： 具有输入组件和输出构件的磁流变耦合（MRC）。 输出构件包括大致圆柱形的鼓部分和从其径向向内延伸的毂部分。 大致圆柱形的滚筒部分具有低导磁区域，其中限定了多个通道。 此外，多个孔由轮毂部分限定。 多个通道和孔径增强MRC内磁流变流体（MRF）的流动。 鼓部分具有碳化钨的表面处理以增强耐磨性。 此外，滚筒部分具有10至250微米的平均粗糙度或Ra值。

公开(公告)号：US20060059905A1

公开(公告)日：2006-03-23

申请号：US11244807

申请日：2005-10-06

申请人： Chandra Namuduri

发明人： Chandra Namuduri

IPC分类号： F16D31/02

CPC分类号： F16D39/00 ,  F16D31/06 ,  F16D37/02 ,  F16D48/066 ,  F16D2037/004 ,  F16D2500/10406 ,  F16D2500/10475 ,  F16D2500/31 ,  F16D2500/508 ,  F16D2500/7044 ,  F16D2500/7109

摘要： A power steering system for a vehicle includes a hydraulic pump interconnected with a power steering gear and a fluid coupling that operatively connects a drive shaft of an engine of the vehicle with the hydraulic pump. The power steering system also includes an electronic controller operable to provide a variable control signal based on received input and a power electronic converter that energizes the fluid coupling in response to the control signal to vary torque transmitted via said fluid coupling.

摘要翻译： 用于车辆的动力转向系统包括与动力转向装置互连的液压泵和将车辆的发动机的驱动轴与液压泵可操作地连接的流体联轴器。 动力转向系统还包括可操作以基于接收到的输入提供可变控制信号的电子控制器和响应于控制信号激励流体联轴器以改变经由所述流体联接传递的扭矩的电力电子转换器。