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公开(公告)号：US20080066989A1
公开(公告)日：2008-03-20
申请号：US11513382
申请日：2006-08-30
IPC分类号： B62D7/00
摘要： An electrically actuated, hydraulic power steering system is provided. The steering system includes a hydraulic pump for generating hydraulic pressure, a hydraulic fluid reservoir, a hydraulic cylinder, and a control valve arrangement that selectively connects the hydraulic cylinder to the pump and the hydraulic fluid reservoir. The control valve arrangement is characterized during the on-center position by a first and a second chamber of the hydraulic cylinder being in fluid communication with each other but not with the fluid reservoir. In one embodiment, the steering system has a steering sensor, a control box, and two pressure accumulators for providing at least two levels of steering assist.
摘要翻译： 提供电动液压动力转向系统。 转向系统包括用于产生液压的液压泵，液压油箱，液压缸和选择性地将液压缸连接到泵和液压油箱的控制阀装置。 控制阀装置的特征在于在中心位置，液压缸的第一和第二室彼此流体连通但不与流体储存器连通。 在一个实施例中，转向系统具有转向传感器，控制箱和用于提供至少两个级别的转向辅助的两个压力蓄能器。
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公开(公告)号：US07487856B2
公开(公告)日：2009-02-10
申请号：US11513382
申请日：2006-08-30
IPC分类号： B62D5/06
摘要： An electrically actuated, hydraulic power steering system is provided. The steering system includes a hydraulic pump for generating hydraulic pressure, a hydraulic fluid reservoir, a hydraulic cylinder, and a control valve arrangement that selectively connects the hydraulic cylinder to the pump and the hydraulic fluid reservoir. The control valve arrangement is characterized during the on-center position by a first and a second chamber of the hydraulic cylinder being in fluid communication with each other but not with the fluid reservoir. In one embodiment, the steering system has a steering sensor, a control box, and two pressure accumulators for providing at least two levels of steering assist.
摘要翻译： 提供电动液压动力转向系统。 转向系统包括用于产生液压的液压泵，液压油箱，液压缸和选择性地将液压缸连接到泵和液压油箱的控制阀装置。 控制阀装置的特征在于在中心位置，液压缸的第一和第二室彼此流体连通但不与流体储存器连通。 在一个实施例中，转向系统具有转向传感器，控制箱和用于提供至少两个级别的转向辅助的两个压力蓄能器。
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公开(公告)号：US07426977B2
公开(公告)日：2008-09-23
申请号：US11268467
申请日：2005-11-07
IPC分类号： B62D5/06
摘要： A first vehicle power steering system includes a twistable steering torsion bar, a magnet, a Hall sensor, and a valve. The steering torsion bar has a first end fixedly connected to a vehicle steering wheel. The magnet is movable in a first and an opposite second longitudinal direction with respect to the steering torsion bar and is constrained to move in the first longitudinal direction when the steering wheel is turned to the right by a driver and is constrained to move in the second longitudinal direction when the steering wheel is turned to the left by the driver. The Hall sensor has an output and is positioned proximate the magnet. The valve is operatively connected to the output. A second vehicle power steering system includes a twistable steering torsion bar, a ring-magnet support cylinder, a ring-magnet assembly, a ball-and-ramp assembly, a spring, a Hall sensor, and a valve.
摘要翻译： 第一车辆动力转向系统包括可扭曲的转向扭杆，磁体，霍尔传感器和阀。 转向扭杆具有固定地连接到车辆方向盘的第一端。 磁体可相对于转向扭杆在第一和相对的第二纵向方向上移动，并且当方向盘由驾驶员向右转向时被限制为在第一纵向方向上移动，并被限制为在第二纵向方向上移动 方向盘由驾驶员向左转动时的纵向方向。 霍尔传感器具有一个输出端并位于磁体附近。 阀可操作地连接到输出端。 第二车辆动力转向系统包括可扭曲的转向扭力杆，环形磁体支撑圆筒，环形磁体组件，球和斜坡组件，弹簧，霍尔传感器和阀。
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公开(公告)号：US07354363B2
公开(公告)日：2008-04-08
申请号：US10848768
申请日：2004-05-18
CPC分类号： F16H7/1236 , F16H7/1281 , F16H2007/081 , F16H2007/084
摘要： A tensioner for a power transmitting belt is provided having a base, an arm pivotably attached to the base, a pulley rotatably attached to the arm and a spring operatively connected to the arm and the base for urging the arm in direction to tension the belt. A hydraulic strut is pivotably attached to the base and the arm to restrict the movement of the arm through asymmetric fluid damping. The hydraulic strut includes a hydraulic cylinder filled with magnetorheological fluid, a piston rod axially mounted through the cylinder and a piston mounted on the piston rod to divide the cylinder into first and second fluid chambers. The strut further includes a fluid flow path between the first and second fluid chambers, a check valve in the fluid flow path to provide asymmetric fluid flow and a coil that is operable to generate a magnetic field across the fluid flow path when energized. When the coil is energized fluid flow between the first and second fluid chambers is halted such that the arm of the tensioner locks up.
摘要翻译： 用于动力传递带的张紧器设置有基部，可枢转地附接到基部的臂，可旋转地附接到臂的滑轮和可操作地连接到臂和基座的弹簧，用于沿着拉紧带的方向推动臂。 液压支柱可枢转地连接到基座和臂上，以通过不对称的流体阻尼来限制臂的移动。 液压支柱包括充满磁流变流体的液压缸，通过气缸轴向安装的活塞杆和安装在活塞杆上的活塞，以将气缸分成第一和第二流体室。 支柱还包括在第一和第二流体室之间的流体流动路径，流体流动路径中的止回阀以提供不对称流体流动，以及线圈，其可操作以在通电时在流体流动路径上产生磁场。 当线圈被通电时，第一和第二流体室之间的流体流动停止，使得张紧器的臂锁定。
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公开(公告)号：US07118504B2
公开(公告)日：2006-10-10
申请号：US10421451
申请日：2003-04-23
IPC分类号： F16H7/12
CPC分类号： F16H7/1227 , F16H7/0834 , F16H7/1236 , F16H2007/081 , F16H2007/084 , F16H2007/0874
摘要： A belt tensioner for a power transmission belt may be provided that operates on an endless path and that utilizes asymmetric motion control. The belt tensioner may have an arm with a belt engaging section and a drum section, a support member for securing the tensioner relative to the belt, where the arm pivots on the support member, and a tension spring that urges the arm to pivot about the support member in a first direction and urges the belt engaging section against the belt with a force to tension the belt. The tensioner also may have a fluid filled chamber inside a portion of the drum section of the arm and a valve pivotally attached to the tensioner so that the valve extends across the fluid containing chamber.
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6.发明授权Adaptive belt tensioner system for control of reversible torque load pulley 有权用于控制可逆转矩负载滑轮的自适应皮带张紧器系统公开(公告)号：US06689001B2
公开(公告)日：2004-02-10
申请号：US10015493
申请日：2001-12-12
IPC分类号： F16H708
CPC分类号： F16H7/1281 , F16H57/0006 , F16H2007/081 , F16H2007/0846 , F16H2007/0874 , F16H2007/0878
摘要： A tensioner for an endless power transmission belt, the belt being driven about a sheave. The tensioner may comprise a base, a resilient device, and first and second arms pivotally coupled for movement in an open and a closed direction. The tensioner may also comprise first and second pulleys rotatably coupled to the first and second arms, the resilient device biasing the arms in the closed direction in which the first and second pulleys apply tension to the belt. The tensioner may also comprise first and second stops positioned outside the arms on the base to limit the movement of the arms in the open direction in response to an increase in tension in the belt.
摘要翻译： 用于无端动力传动皮带的张紧器，皮带围绕滑轮驱动。 张紧器可以包括底座，弹性装置，以及可枢转地连接以便在打开和关闭方向上移动的第一和第二臂。 张紧器还可以包括可旋转地联接到第一和第二臂的第一和第二皮带轮，弹性装置沿着关闭方向偏置臂，第一和第二皮带轮使第一和第二滑轮向皮带施加张力。 张紧器还可以包括位于基座上的臂外部的第一和第二止动件，以响应于带中的张力的增加而限制臂在打开方向上的运动。
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公开(公告)号：US5531648A
公开(公告)日：1996-07-02
申请号：US437103
申请日：1995-05-05
CPC分类号： F16H7/1218 , F02B67/06 , F16H7/1236 , F16H7/129 , F02B2275/06 , F16H2007/084 , F16H2007/0851 , F16H2007/0859 , F16H2007/0891 , F16H7/0848
摘要： An accessory drive system for an automotive engine includes a drive pulley attached to an output shaft of the engine and a flexible drivebelt for connecting the drive pulley with driven pulleys. A tensioner maintains the drivebelt in contact with each of the drive and driven pulleys. The tensioner includes an arm which is rotatably mounted to the engine which has a wheel for contacting the drivebelt. Motion of the arm is controllably damped by a spool valve which controls the flow of hydraulic fluid in a hydrostatically lockable hydraulic cylinder incorporated in the tensioner.
摘要翻译： 用于汽车发动机的附件驱动系统包括附接到发动机的输出轴的驱动滑轮和用于将驱动滑轮与从动滑轮连接的柔性驱动带。 张紧器保持驱动带与每个驱动和从动滑轮接触。 张紧器包括可旋转地安装到发动机的臂，该发动机具有用于接触驱动带的轮。 臂的运动通过滑阀可控地阻尼，该滑阀控制结合在张紧器中的可静压锁定的液压缸中的液压流体的流动。
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公开(公告)号：US07163478B2
公开(公告)日：2007-01-16
申请号：US10421046
申请日：2003-04-23
IPC分类号： F16H7/08
CPC分类号： F16H7/1281 , F16H57/0006 , F16H2007/081 , F16H2007/0846 , F16H2007/0874 , F16H2007/0878
摘要： A tensioner for generating tension in a power-transmitting belt is provided. The tensioner includes a base, which may be secured to an engine, and an arm that is movably attached to the base. A pulley is rotatably attached to the arm for engaging the belt. A spring is operatively connected to the arm and the base for urging the arm to move relative to the base in a first direction. When the arm is moved in the first direction, the pulley is moved into engagement with the belt with a force to tension the belt. The tensioner further includes a stop that is adjustably positioned on the base to limit the movement of the arm in a second direction. The position of the stop on the base may be automatically adjusted by the spring during installation of the tensioner.
摘要翻译： 提供了用于在动力传递带中产生张力的张紧器。 张紧器包括可固定到发动机的基座和可移动地附接到基座的臂。 滑轮可旋转地附接到臂上用于接合皮带。 弹簧可操作地连接到臂和基座，用于在第一方向上推动臂相对于基座移动。 当臂沿第一方向移动时，滑轮通过力拉动皮带与皮带接合。 张紧器还包括可调节地定位在基座上以限制臂沿第二方向的运动的止挡件。 停止在基座上的位置可以在张紧器安装期间通过弹簧自动调整。
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9.发明授权
公开(公告)号：US5752891A
公开(公告)日：1998-05-19
申请号：US406438
申请日：1995-03-20
CPC分类号： F16H7/1236 , F02B67/06 , F16H7/1209
摘要： An electronically controlled accessory drive system for an automotive engine includes a drive pulley attached to an output shaft of the engine and a flexible drivebelt for connecting the drive pulley with driven pulleys. A tensioner maintains the drivebelt in contact with each of the drive and driven pulleys. The tensioner includes an arm which is rotatably mounted to the engine, and has a wheel for contacting the drivebelt. The wheel is urged into contact with the drivebelt by the arm, with the tensioner further including a governor for controlling rotational motion of the arm, with the arm being able to rotate freely in the direction toward the drivebelt, with the governor resisting motion of the arm in the direction in which tension in the drivebelt is decreased. Motion of the governor is controlled by an electronic controller which operates a magnetic coil disposed about a fluid passage through which a magnetorheological fluid must pass as the tensioner arm rotates.
摘要翻译： 用于汽车发动机的电子控制附件驱动系统包括附接到发动机的输出轴的驱动滑轮和用于将驱动滑轮与从动滑轮连接的柔性驱动带。 张紧器保持驱动带与每个驱动和从动滑轮接触。 张紧器包括可旋转地安装在发动机上的臂，并具有用于接触驱动带的轮。 轮被推动通过臂与驱动带接触，张紧器还包括用于控制臂的旋转运动的调节器，其中臂能够沿着朝向驱动带的方向自由旋转，调速器抵抗 在驱动带中的张力减小的方向上的臂。 调速器的运动由电子控制器控制，电子控制器操作设置在流体通道周围的磁性线圈，当张紧器臂旋转时磁流变流体必须通过该磁路。
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公开(公告)号：US5131889A
公开(公告)日：1992-07-21
申请号：US600652
申请日：1990-10-22
CPC分类号： F16H7/1281 , F02B67/06 , F02B2275/06 , F16H2007/081 , F16H2007/0878
摘要： An accessory drive tensioner for an engine includes a cover adapted to enclose a portion of the engine, a hub carrier formed integrally with the cover, and a tensioner arm and wheel assembly journalled to the hub carrier. The tensioner arm and wheel assembly includes a flanged hub having a clindrical center section in contact with a bearing post also formed integrally with the cover, and a generally planar cover section in contact with the annular wall.
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