公开(公告)号：US06318519B1

公开(公告)日：2001-11-20

申请号：US09654607

申请日：2000-09-01

申请人： William Charles Kruckemeyer ,  Eric Lee Jensen ,  Richard Edward Longhouse ,  Patrick Neil Hopkins ,  John David Fehring ,  Ilya Lisenker ,  James A. Morgan

发明人： William Charles Kruckemeyer ,  Eric Lee Jensen ,  Richard Edward Longhouse ,  Patrick Neil Hopkins ,  John David Fehring ,  Ilya Lisenker ,  James A. Morgan

IPC分类号： F16F953

CPC分类号： F16F9/535 ,  B60G2204/112 ,  F16F9/3214 ,  F16F9/3405

摘要： An improved magnetorheological fluid damper is provided which effectively provides a smooth transition, without a sharp break in the damper force/velocity curve, between very low damping forces near zero damper velocity to higher damping forces at higher piston velocities while maintaining desirable maximum force levels. The damper includes a piston assembly, including a magnet assembly and a flow gap extending through the piston assembly to permit fluid flow between the chambers. The force/velocity optimization feature includes a groove or passage open to the flow gap, positioned in series with a part of the flow gap in a magnetic circuit generated by the magnet assembly and dimnensioned/sized to permit fluid flowing through the passage to experience a magnetorheological effect less than a magnetorheological effect experienced by fluid flowing through the flow gap but not through the groove. Preferably, the passage is formed in an inner annular surface of a flux ring positioned around a piston core. The passage may be formed, for example, by a curvilinear surface, a modified rectangular surface or a triangular surface.

摘要翻译： 提供了一种改进的磁流变流体阻尼器，其有效地提供了在阻尼器力/速度曲线下的非常低的阻尼力与零阻尼器速度的非常低的阻尼力之间的平滑过渡，而在更高的活塞速度下具有较高的阻尼力，同时保持期望的最大力水平。 阻尼器包括活塞组件，其包括磁体组件和延伸穿过活塞组件的流动间隙，以允许流体在腔室之间流动。 力/速度优化特征包括通向流动间隙的凹槽或通道，与由磁体组件产生的磁路中的一部分流动间隙串联定位，并且被延伸/尺寸设定为允许流体流过通道以体验 磁流变效应小于流体流过流动间隙但不通过凹槽的磁流变效应。 优选地，通道形成在位于活塞芯周围的磁通环的内环形表面中。 通道可以例如由曲线表面，改进的矩形表面或三角形表面形成。

公开(公告)号：US6161662A

公开(公告)日：2000-12-19

申请号：US270559

申请日：1999-03-16

申请人： Gary Lee Johnston ,  Richard Edward Longhouse ,  William Charles Kruckemeyer ,  Michael Leslie Oliver ,  Donelle Robert Mills

发明人： Gary Lee Johnston ,  Richard Edward Longhouse ,  William Charles Kruckemeyer ,  Michael Leslie Oliver ,  Donelle Robert Mills

IPC分类号： F16F9/512 ,  F16F9/50

CPC分类号： F16F9/5123

摘要： A monotube suspension damper including a cylinder tube having a fluid chamber and a gas chamber, a piston dividing the fluid chamber into a compression chamber and a rebound chamber, a primary fluid flow path across the piston including flow control valves which throttle fluid flow, a secondary fluid flow path across the piston parallel to the primary flow path including flow control valves which throttle fluid flow, and a tubular connecting rod on the cylinder tube connected to the piston. A valve spool is supported on the piston for linear translation between closed and open positions blocking and unblocking the secondary flow path. A control rod inside of the connecting rod is disposed between the valve spool and a flexible diaphragm exposed to pneumatic pressure in an expansible load leveling chamber between sprung and unsprung masses of the motor vehicle. As the pneumatic pressure in the expansible chamber varies, the control rod transfers flexure of the diaphragm to the valve spool to close the secondary flow path and increase the stiffness of the suspension damper as pneumatic pressure increases and to open the secondary flow path and decrease the stiffness of the suspension damper as pneumatic pressure decreases.

摘要翻译： 一种单管悬挂阻尼器，包括具有流体室和气室的气缸筒，将流体室分成压缩室和反弹室的活塞，横跨活塞的主要流体流动路径，包括节流阀的流量控制阀， 平行于主流路的活塞的二次流体流动路径包括节流流体的流量控制阀以及连接到活塞的气缸管上的管状连接杆。 阀芯支撑在活塞上，用于在闭合和打开位置之间进行线性平移，阻止和解除二次流动路径。 连杆的内部的控制棒设置在阀芯和在机动车辆的悬挂质量和非悬挂质量之间的可膨胀负载调平室中暴露于气动压力的柔性隔膜之间。 随着可膨胀室中的气压变化，控制杆将隔膜的挠曲传递到阀芯，以闭合二次流动路径，并且随着气压增加并增加悬挂阻尼器的刚度并且打开二次流动路径并减小 悬挂阻尼器的刚度随气压的降低而减小。

公开(公告)号：US06085877A

公开(公告)日：2000-07-11

申请号：US105334

申请日：1998-06-26

申请人： Steven Ray Robinson ,  James Louis Lopez, Jr. ,  Donelle Robert Mills ,  Gary Lee Johnston ,  Richard Edward Longhouse ,  Michael Leslie Oliver

发明人： Steven Ray Robinson ,  James Louis Lopez, Jr. ,  Donelle Robert Mills ,  Gary Lee Johnston ,  Richard Edward Longhouse ,  Michael Leslie Oliver

IPC分类号： F16F9/46 ,  F16F9/34

CPC分类号： F16F9/466

摘要： A damper provides tunable variable rates in both extension and compression operation. A piston is carried in a cylinder tube separating out extension and compression chambers. The piston carries a first valving assembly that is tuned to provide a first damping level when fluid flows through the piston from the extension chamber to the compression chamber and a second valving assembly that is tuned to provide a second damping level when fluid flows through the piston from the compression chamber to the extension chamber. A control valve assembly is mounted to move with the piston. When the control valve assembly is closed, fluid flow between the compression and extension chamber flows substantially only through the first and second valving assemblies and when the control valve is open at least some fluid flows between the compression and extension chambers through a secondary valve assembly without passing through the first and second valving assemblies. The secondary valve assembly is mounted to move with the piston and includes a third valving assembly that is tuned to provide a third damping level, and includes a fourth valving assembly that is tuned to provide a fourth damping level. When the control valve is open, fluid flow from the extension chamber to the compression chamber passes through both the first valving assembly and the third valving assembly wherein performance of the damper is determined by the first and third valving assemblies in parallel, and fluid flow from the compression chamber to the extension chamber passes through both the second valving assembly and the fourth valving assembly wherein performance of the damper is determined by the second and fourth valving assemblies in parallel.

摘要翻译： 阻尼器在扩展和压缩操作中提供可调变量。 活塞被承载在分离出延伸室和压缩室的气缸管中。 活塞承载第一阀门组件，其被调节以在流体从延伸室流过压缩室时流过活塞以提供第一阻尼水平;以及第二阀组件，其被调节以在流体流过活塞时提供第二阻尼水平 从压缩室到延伸室。 安装控制阀组件以与活塞一起移动。 当控制阀组件关闭时，压缩室和延伸室之间的流体流动基本上仅通过第一和第二阀组件，并且当控制阀打开时，至少一些流体在压缩室和延伸室之间通过次级阀组件流动，而没有 通过第一和第二阀组件。 辅助阀组件安装成与活塞一起移动并且包括调节以提供第三阻尼水平的第三阀组件，并且包括调节以提供第四阻尼水平的第四阀组件。 当控制阀打开时，从延伸室到压缩室的流体流动通过第一阀组件和第三阀组件，其中阻尼器的性能由第一和第三阀组件并联确定，并且流体从 到扩展室的压缩室通过第二阀组件和第四阀组件，其中阻尼器的性能由第二和第四阀组件并联确定。

公开(公告)号：US5897130A

公开(公告)日：1999-04-27

申请号：US441369

申请日：1995-05-15

申请人： Kamal Naif Majeed ,  Richard Edward Longhouse ,  Albert Victor Fratini, Jr. ,  Donald Edward Schenk ,  John Francis Hoying

发明人： Kamal Naif Majeed ,  Richard Edward Longhouse ,  Albert Victor Fratini, Jr. ,  Donald Edward Schenk ,  John Francis Hoying

IPC分类号： B60G17/019 ,  B60G17/0195 ,  B60G17/00 ,  B60G17/15

CPC分类号： B60T8/4266 ,  B60G17/019 ,  B60G17/0195 ,  B60G2400/102 ,  B60G2400/106 ,  B60G2400/208 ,  B60G2400/252 ,  B60G2400/61 ,  B60G2400/841 ,  B60G2400/91 ,  B60G2500/30 ,  B60G2600/182 ,  B60G2600/60 ,  B60G2600/602 ,  B60G2800/012 ,  B60G2800/014 ,  B60G2800/18 ,  B60G2800/22 ,  B60G2800/914 ,  B60G2800/92 ,  B60T2240/06

摘要： A chassis system control method comprising the steps of measuring rotational speed of a plurality of vehicle wheels; estimating, responsive to each wheel rotational velocity, a relative velocity between the wheel and a corresponding corner of a vehicle body; determining a chassis system control command responsive to the estimations; and applying the chassis system control command to control the chassis system responsive to the estimations, wherein need for body to wheel relative position and/or relative velocity sensors is eliminated.

摘要翻译： 一种底盘系统控制方法，包括以下步骤：测量多个车轮的转速; 响应于每个车轮旋转速度，估计车轮与车体的对应拐角之间的相对速度; 响应于所述估计确定底盘系统控制命令; 以及应用所述底盘系统控制命令来响应于所述估计来控制所述底盘系统，其中消除了车身相对位置和/或相对速度传感器的需要。