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1.发明授权
公开(公告)号：US4959959A
公开(公告)日：1990-10-02
申请号：US268693
申请日：1988-11-08
申请人： Akihito Okuda , Yoshihiro Katagiri , Hiromi Aoki
发明人： Akihito Okuda , Yoshihiro Katagiri , Hiromi Aoki
CPC分类号： F16H39/14
摘要： A hydraulically operated continuously variable transmission comprising a hydraulic motor of the variable displacement type having a motor cylinder coupled to an output shaft and including motor plungers slidably disposed respectively in a number of cylinder holes defined in an annular pattern surrounding the axis of rotation of the motor cylinder, and a hydraulic pump coupled to an input shaft. The hydraulic motor and hydraulic pump are interconnected by a closed hydraulic circuit in which the flow of working oil is controlled by a distribution ring which is relatively rotatably and slidably held against an end surface of the motor cylinder for successively switching the introduction of working oil into the cylinder bores and the discharge of working oil from the cylinder bores in response to rotation of the motor cylinder. The distribution ring has an asymmetrical hydraulic pressure bearing area in order to minimize forces tending to tilt the distribution ring relative to the motor cylinder end surface.
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公开(公告)号：US4891944A
公开(公告)日：1990-01-09
申请号：US132481
申请日：1987-12-14
IPC分类号： F16H39/14
CPC分类号： F16H39/14
摘要： A hydraulically operated continuously variable transmission comprises a hydraulic motor coupled to an output shaft, a hydraulic pump coupled an input shaft, and a closed hydraulic circuit interconnecting the hydraulic motor and the hydraulic pump. The hydraulic motor has an annular array of slidable motor plungers disposed around an axis of rotation thereof and slidably disposed in respective cylinder holes defined in the motor cylinder. The hydraulic motor also has a distribution ring supported on the fixed shaft and rotatable relatively to and slidable against an end face of the motor cylinder for introducing high-pressure oil successively into the cylinder holes and discharging oil successively from the cylinder holes in response to rotation of the motor cylinder. The transmission also includes a hydraulic pump coupled to an input shaft, at least one of the hydraulic pump and the hydraulic motor being of the variable-displacement type, and a closed hydraulic circuit interconnecting the hydraulic pump and the hydraulic motor. The distribution ring is held in engagement with the fixed shaft for preventing the distribution ring from rotating with respect to the fixed shaft.
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3.发明授权
公开(公告)号：US06109031A
公开(公告)日：2000-08-29
申请号：US146138
申请日：1998-09-03
CPC分类号： F16H61/423 , F16H47/04 , F16H61/4017 , F16H2037/0866 , F16H2059/6853 , F16H59/24
摘要： A relief pressure controlling device comprises a driving side relief pressure controlling valve, a capacity detector which detects the capacity of a hydraulic pump, and an engine throttle opening detector. When the hydraulic pump and the hydraulic motor which are connected by a first oil passage and a second oil passage constituting a hydraulic closed circuit are driven by an engine, the relief pressure controlling valve controls the relief pressure of the oil passage on the driving side that is either the first oil passage or the second oil passage whose pressure becomes higher than the other, to a target relief pressure. The target relief pressure is determined in correspondence with the engine output and corrected on the basis of the pump efficiency which is predetermined in relation to the capacity of the hydraulic pump and to the throttle opening, and this corrected target relief pressure is set as a driving side target relief pressure. The driving side relief pressure controlling valve performs a relief pressure control so that the relief pressure of the driving side oil passage will become the driving side target relief pressure, which is set in correspondence with the capacity of the hydraulic pump and the engine throttle opening.
摘要翻译： 安全压力控制装置包括驱动侧释放压力控制阀，检测液压泵的容量的容量检测器和发动机节气门开度检测器。 当通过第一油路连接的液压泵和液压马达和构成液压闭合回路的第二油路由发动机驱动时，溢流压力控制阀控制驱动侧油路的溢流压力， 是压力变得高于另一个的第一油路或第二油路，达到目标减压压力。 目标释放压力是根据发动机输出确定的，并根据相对于液压泵的容量和节气门开度而预先确定的泵效率进行校正，该修正后的目标释放压力被设定为行驶 侧目标缓解压力。 驱动侧泄压控制阀进行溢流压力控制，使得驱动侧油路的溢流压力成为与液压泵和发动机节气门开度相对应地设定的驱动侧目标溢流压力。
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公开(公告)号：US4845961A
公开(公告)日：1989-07-11
申请号：US132410
申请日：1987-12-14
申请人： Akihito Okuda , Yoshihiro Katagiri
发明人： Akihito Okuda , Yoshihiro Katagiri
IPC分类号： F16H39/14
CPC分类号： F16H39/14
摘要： A hydraulically operated continuously variable transmission includes a hydraulic motor coupled to an output shaft, a hydraulic pump coupled to an input shaft, and a closed hydraulic circuit interconnecting the hydraulic motor and the hydraulic pump. The hydraulic motor has an annular array of slidable motor plungers disposed around an axis of rotation thereof and slidably disposed in respective cylinder holes defined in a motor cylinder, the motor cylinder having an annular array of communication ports disposed around the axis of rotation and communicating with the cylinder holes. The hydraulic motor also has a distribution ring supported on a fixed shaft and rotatable relative to and slidable against an end face of the motor cylinder, the distribution ring having a suction port for communicating with the communication ports corresponding to those motor plungers which are in an expansion stroke, and a discharge port for communicating with the communication ports corresponding to those motor plungers which are in a contraction stroke. The suction and discharge ports are arcuate in shape and extend substantially along the annular array of communication ports, the suction and discharge ports having outer peripheral edges having a radius greater than the radius of a circumscribed circle of the communication ports and inner peripheral edges having a radius smaller than the radius of an inscribed circle of the communication ports.
摘要翻译： 液压操作的无级变速器包括联接到输出轴的液压马达，耦合到输入轴的液压泵以及将液压马达和液压泵相互连接的闭合液压回路。 液压马达具有围绕其旋转轴设置的可滑动的马达柱塞的环形阵列，并且可滑动地布置在限定在马达缸中的相应的气缸孔中，所述马达缸具有围绕旋转轴设置的连通孔的环形阵列， 气缸孔。 液压马达还具有支撑在固定轴上并且相对于马达缸的端面可旋转并可滑动的分配环，该分配环具有用于与对应于那些马达柱塞的那些马达柱塞的连通端口连通的抽吸口 膨胀冲程，以及用于与对应于处于收缩冲程中的那些马达柱塞的通信端口进行通信的排出口。 吸入口和排出口的形状是弧形的，并且基本上沿着连通口的环形阵列延伸，吸入口和排出口的外周边缘的半径大于连通口的外接圆的半径， 半径小于通信端口的内接圆的半径。
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公开(公告)号：US06859693B2
公开(公告)日：2005-02-22
申请号：US10394174
申请日：2003-03-24
申请人： Yutaka Tamagawa , Hiroyuki Makino , Yoshihiro Katagiri , Tomoyuki Takano , Atsushi Matsubara , Shinichi Kitajima
发明人： Yutaka Tamagawa , Hiroyuki Makino , Yoshihiro Katagiri , Tomoyuki Takano , Atsushi Matsubara , Shinichi Kitajima
CPC分类号： G01M1/30 , G01L3/02 , Y02T10/7258 , Y10T477/60
摘要： A torque variation control device for a vehicle which has a motor providing rotational torque to a drive shaft of a vehicle, a motor control means controlling the motor based on drive torque, and a rotational velocity detection means detecting a rotational velocity of the drive shaft or a rotational shaft of the motor. The device has a feature that the device includes a torque variation detection means detecting a torque variation of the vehicle caused by a variation of the rotational velocity, and a compensation torque setting means setting compensation torque in an opposite phase relative to the torque variation.
摘要翻译： 一种用于车辆的转矩变化控制装置，其具有向车辆的驱动轴提供旋转扭矩的电动机，基于驱动转矩控制电动机的电动机控制装置和检测驱动轴的转速的转速检测装置， 马达的旋转轴。 该装置的特征在于，该装置包括检测由转速的变化引起的车辆的转矩变动的转矩变动检测单元，以及补偿转矩设定单元，将相对于转矩变化相反的相位设定为补偿转矩。
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公开(公告)号：US4972675A
公开(公告)日：1990-11-27
申请号：US414110
申请日：1989-09-28
CPC分类号： F16H39/14
摘要： A hydraulically operated continuously variable transmission comprises a hydraulic pump and a hydraulic motor having a motor cylinder including an integral tubular member. A distribution disc is coupled to the motor cylinder at one end of the tubular portion and has oil passages communicating with the hydraulic pump and the hydraulic motor. A hollow fixed shaft is inserted in the tubular member, and a distribution ring is axially movably mounted on the fixed shaft and has an end face slidably held against the distribution disc. A mechanical seal assembly includes an annular rotatable seal member rotatably disposed in the tubular member, and an annular fixed seal member axially movably, but nonrotatably, mounted on the fixed shaft. A compression spring is disposed between the fixed seal member and the distribution ring and is resiliently extensible for applying a preload to abut an axial end face of the fixed seal member against an axial end face of the rotatable seal member and a preload to abut the end face of the distribution ring against the distribution disc.
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公开(公告)号：US4944201A
公开(公告)日：1990-07-31
申请号：US137756
申请日：1987-12-24
申请人： Takashi Iino , Yoshihiro Katagiri
发明人： Takashi Iino , Yoshihiro Katagiri
IPC分类号： F16H61/40 , F16H61/4052 , F16H61/42 , F16H61/423 , F16H61/46 , F16H61/472
CPC分类号： F16H61/4052 , F16H61/423 , F16H61/472 , Y10T477/636
摘要： A hydraulically operated continuously variable automotive transmission includes a transmission ratio controlling member and a hydraulic actuator operatively coupled to the transmission ratio controlling member for continuously operating the transmission ratio controlling member to increase or reduce the transmission ratio of the continuously variable automotive transmission. A control valve is provided for applying a controlling hydraulic pressure to the hydraulic actuator dependent on the difference between a first control force commensurate with an indication of the automobile driver's intention of acceleration or deceleration and a second force commensurate with the engine rotational speed, in order to change the direction in which the hydraulic actuator is operated. The control valve includes, but is not limited to, a cylinder having two ports communicating with the hydraulic actuator, a port communicating with a source of hydraulic pressure, and a port communicating with an oil tank, a first spool slidably disposed in the cylinder and slidable dependent on the difference between the first and second control forces for selectively bringing the ports into and out of communication, a second spool slidably disposed in the first spool and movable in response to a control force commensurate with a control signal, and variable restrictions disposed between the first and second spools for varying the amount of controlling hydraulic pressure applied to the hydraulic actuator.
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公开(公告)号：US07364176B2
公开(公告)日：2008-04-29
申请号：US10923812
申请日：2004-08-24
IPC分类号： B60G7/00
CPC分类号： B60G7/02 , B60G2200/1424 , B60G2200/445 , B60G2200/462 , B60G2202/135 , B60G2202/312 , B60G2204/1431 , B60G2204/41 , B60G2204/4104 , B60G2204/41042 , B60G2206/122 , F16F1/3732 , F16F1/3873
摘要： A suspension bushing is provided in a connection between a lower arm supporting a drive front wheel and a subframe. The suspension bushing includes an inner cylindrical portion secured to the subframe, an outer cylindrical portion secured to the lower arm, and a rubber resilient member joining the inner and outer cylindrical portions. A protrusion, provided on the rubber resilient member as a region receiving a load during acceleration of the vehicle, is arranged to have a greater spring constant than a portion of the rubber resilient member surrounding a second opening section provided as a region receiving a load during braking of the vehicle.
摘要翻译： 悬架衬套设置在支撑驱动前轮和副车架的下臂之间的连接中。 悬挂衬套包括固定到副车架的内圆柱形部分，固定到下臂的外圆柱形部分和连接内圆柱形部分和外圆柱形部分的橡胶弹性构件。 设置在橡胶弹性构件上作为在车辆加速期间接收负载的区域的突出部布置成具有比围绕设置为接收负载的区域的第二开口部分的橡胶弹性构件的一部分更大的弹簧常数 制动车辆。
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公开(公告)号：US20050051987A1
公开(公告)日：2005-03-10
申请号：US10923812
申请日：2004-08-24
CPC分类号： B60G7/02 , B60G2200/1424 , B60G2200/445 , B60G2200/462 , B60G2202/135 , B60G2202/312 , B60G2204/1431 , B60G2204/41 , B60G2204/4104 , B60G2204/41042 , B60G2206/122 , F16F1/3732 , F16F1/3873
摘要： Suspension bushing is provided in a connection between a lower arm supporting a drive front wheel and a subframe. The suspension bushing includes an inner cylindrical portion secured to the subframe, an outer cylindrical portion secured to the lower arm, and a rubber resilient member joining the inner and outer cylindrical portions. Protrusion, provided on the rubber resilient member as a region receiving a load during acceleration of the vehicle, is arranged to have a greater spring constant than a portion of the rubber resilient member surrounding a second opening section provided as a region receiving a load during braking of the vehicle.
摘要翻译： 悬架衬套设置在支撑驱动前轮和副车架的下臂之间的连接中。 悬挂衬套包括固定到副车架的内圆柱形部分，固定到下臂的外圆柱形部分和连接内圆柱形部分和外圆柱形部分的橡胶弹性构件。 设置在橡胶弹性构件上作为在车辆加速期间接收负载的区域的突出部布置成具有比围绕设置为在制动期间接收负载的区域的第二开口部分的橡胶弹性构件的部分更大的弹簧常数 的车辆。
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公开(公告)号：US6067795A
公开(公告)日：2000-05-30
申请号：US75030
申请日：1998-05-08
CPC分类号： F16H47/04 , F16H2037/0866
摘要： A hydraulic continuously variable transmission for use on a vehicle comprises a hydraulic closed circuit, first and second pressure controlling means, brake operation detecting means and deceleration detecting means. The hydraulic closed circuit includes a hydraulic pump, a hydraulic motor, a first oil passage connecting a port of the hydraulic pump with a port of the hydraulic motor and a second oil passage connecting another port of the hydraulic pump with another port of the hydraulic motor, and first and second pressure controlling means control the pressures of the first and second oil passages, respectively. If the deceleration of the vehicle is greater than a standard deceleration when the operation of the brake is detected, then the pressure of the first or second oil passage whose pressure is higher than that of the other is lowered to a predetermined low pressure that is higher than the pressure of either oil passage which is lower by either the first or second pressure controlling means. This predetermined low pressure is determined in reverse proportion to the engine rotational speed, thus preventing the engine from stalling when the wheels are locked up in an abrupt braking operation.
摘要翻译： 一种用于车辆的液压无级变速器包括液压闭合回路，第一和第二压力控制装置，制动操作检测装置和减速度检测装置。 液压闭合回路包括液压泵，液压马达，将液压泵的端口与液压马达的端口连接的第一油路和连接液压泵的另一个端口的液压马达的另一个端口的第二油路 第一和第二压力控制装置分别控制第一和第二油路的压力。 如果在检测到制动器的操作时车辆的减速度大于标准减速度，则将压力高于另一个的第一或第二油路的压力降低到较高的预定低压 比通过第一或第二压力控制装置较低的任一油路的压力。 该预定的低压与发动机转速成反比地确定，从而防止发动机在突然制动操作中锁定时发动机失速。
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