公开(公告)号：US20070044654A1

公开(公告)日：2007-03-01

申请号：US11213269

申请日：2005-08-26

申请人： David Schedgick ,  Michael Karolek

发明人： David Schedgick ,  Michael Karolek

IPC分类号： F01B1/00

CPC分类号： B62D33/0608 ,  B60G13/14 ,  B60G17/015 ,  B60G99/008 ,  B60G2300/082

摘要： A hydraulic actuator for an active of semi-active vehicle suspension system has a cylinder with a piston therein. A piston rod is attached to the piston and extends out of the cylinder. First and second chambers are formed on opposites sides of the piston enabling the piston to be driven in a manner that counteracts vibrations in the vehicle, A third chamber is provided in the cylinder for connection to a load leveling apparatus. A novel structure reduces the overall length of the hydraulic actuator. A displacement sensor is incorporated into the hydraulic actuator to provide an electrical signal that indicated how far the piston rod extends from the cylinder.

摘要翻译： 用于半主动车辆悬架系统的主动的液压致动器具有其中具有活塞的气缸。 活塞杆连接到活塞并延伸出气缸。 第一和第二腔室形成在活塞的相对侧上，使得能够以抵消车辆振动的方式驱动活塞。第三腔室设置在气缸中用于连接到负载调平装置。 新颖的结构减小了液压致动器的总长度。 位移传感器被结合到液压致动器中以提供指示活塞杆从气缸延伸多远的电信号。

公开(公告)号：US20070045067A1

公开(公告)日：2007-03-01

申请号：US11394548

申请日：2006-03-31

申请人： David Schedgick ,  Michael Karolek ,  Eric Griesbach

发明人： David Schedgick ,  Michael Karolek ,  Eric Griesbach

IPC分类号： B60G17/00

CPC分类号： B60G99/002 ,  B60G17/0152 ,  B60G17/01933 ,  B60G2202/413 ,  B60G2300/082 ,  B60G2400/102 ,  B60G2400/252 ,  B60G2500/30 ,  B60G2600/182 ,  B60G2800/916

摘要： A suspension system, connected between two members of a vehicle, includes a cylinder having first and second chambers separated by a moveable piston. The piston has a larger surface area in the first chamber than in the second chamber. A first proportional valve connects the first chamber selectively to a source of pressurized fluid or a tank, and a second proportional valve connects the second chamber selectively to the source or the tank. A controller electrically operates the first and second proportional valves. A pilot-operated valve opens when pressure in the second chamber exceeds a predefined level, thereby providing a path through which fluid flows from the first chamber to the tank. Thus when fluid from the source is applied to the second chamber, both the second proportional valve and the pilot-operated valve open to convey a greater amount of fluid from the first chamber to the tank.

摘要翻译： 连接在车辆的两个构件之间的悬架系统包括具有由可移动活塞分隔开的第一和第二室的缸。 活塞在第一室中具有比在第二室中更大的表面积。 第一比例阀将第一室选择性地连接到加压流体或罐的源，并且第二比例阀选择性地将第二室连接到源或罐。 控制器电动操作第一和第二比例阀。 当第二室中的压力超过预定水平时，先导阀打开，从而提供流体从第一室流向罐的路径。 因此，当来自源的流体被施加到第二室时，第二比例阀和先导操作阀都打开以将更多量的流体从第一室传送到罐。