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公开(公告)号：US08919114B2
公开(公告)日：2014-12-30
申请号：US13278479
申请日：2011-10-21
CPC分类号： F15B7/003 , E02F9/2228 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B7/006 , F15B11/17 , F15B2211/20546 , F15B2211/20576 , F15B2211/30595 , F15B2211/3144 , F15B2211/613 , F15B2211/6346 , F15B2211/7142 , F15B2211/781 , F15B2211/785 , Y02P80/13
摘要： A hydraulic system is disclosed having first, second, and third pumps. The hydraulic system may also have a first actuator connected to the first pump in closed-loop manner, a second actuator connected to the second pump in closed-loop manner, and a third actuator. The hydraulic system may further have a selector valve associated with the third pump, and a first switching valve associated with the third pump and the third actuator. The first switching valve may be movable between a first position at which the third pump is connected to the third actuator in a closed-loop manner to move the third actuator in a first direction, a second position at which the third pump is connected to the third actuator in a closed-loop manner to move the third actuator in a second direction, and a third position at which the third pump is connected to the selector valve.
摘要翻译： 公开了一种具有第一，第二和第三泵的液压系统。 液压系统还可以具有以闭环方式连接到第一泵的第一致动器，以闭环方式连接到第二泵的第二致动器和第三致动器。 液压系统还可以具有与第三泵相关联的选择阀，以及与第三泵和第三致动器相关联的第一切换阀。 第一切换阀可以在第一位置和第三位置之间移动，在第一位置，第三泵以闭环方式连接到第三致动器，以沿第一方向移动第三致动器，第二位置将第三泵连接到第三泵 第三致动器以闭环方式沿第二方向移动第三致动器，以及第三位置，第三泵连接到选择阀。
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公开(公告)号：US20130098010A1
公开(公告)日：2013-04-25
申请号：US13278479
申请日：2011-10-21
CPC分类号： F15B7/003 , E02F9/2228 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B7/006 , F15B11/17 , F15B2211/20546 , F15B2211/20576 , F15B2211/30595 , F15B2211/3144 , F15B2211/613 , F15B2211/6346 , F15B2211/7142 , F15B2211/781 , F15B2211/785 , Y02P80/13
摘要： A hydraulic system is disclosed having first, second, and third pumps. The hydraulic system may also have a first actuator connected to the first pump in closed-loop manner, a second actuator connected to the second pump in closed-loop manner, and a third actuator. The hydraulic system may further have a selector valve associated with the third pump, and a first switching valve associated with the third pump and the third actuator. The first switching valve may be movable between a first position at which the third pump is connected to the third actuator in a closed-loop manner to move the third actuator in a first direction, a second position at which the third pump is connected to the third actuator in a closed-loop manner to move the third actuator in a second direction, and a third position at which the third pump is connected to the selector valve.
摘要翻译： 公开了一种具有第一，第二和第三泵的液压系统。 液压系统还可以具有以闭环方式连接到第一泵的第一致动器，以闭环方式连接到第二泵的第二致动器和第三致动器。 液压系统还可以具有与第三泵相关联的选择阀，以及与第三泵和第三致动器相关联的第一切换阀。 第一切换阀可以在第一位置和第三位置之间移动，在第一位置，第三泵以闭环方式连接到第三致动器，以沿第一方向移动第三致动器，第二位置将第三泵连接到第三泵 第三致动器以闭环方式沿第二方向移动第三致动器，以及第三位置，第三泵连接到选择阀。
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公开(公告)号：US08973358B2
公开(公告)日：2015-03-10
申请号：US13278788
申请日：2011-10-21
CPC分类号： E02F9/2285 , E02F9/2228 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B11/17 , F15B2211/20546 , F15B2211/20561 , F15B2211/265 , F15B2211/3111 , F15B2211/3116 , F15B2211/3144 , F15B2211/329 , F15B2211/7053 , F15B2211/7058 , Y02P80/13
摘要： A hydraulic system is disclosed. The hydraulic system may have a unidirectional variable displacement first pump, a first actuator connected to the first pump via a closed-loop first circuit, and a first switching valve disposed between the first actuator and the first pump. The first switching valve may be configured to control a fluid flow direction through the first actuator. The hydraulic system may also have a second actuator connected to the first pump in parallel with the first actuator via the first circuit, and a second switching valve disposed between the second actuator and the first pump. The second switching valve may be configured to control a fluid flow direction through the second actuator. The hydraulic system may further have a modulation valve associated with the first circuit and configured to selectively modulate a pressure of the first circuit during actuation of the first or second switching valves.
摘要翻译： 公开了一种液压系统。 液压系统可以具有单向可变排量的第一泵，通过闭环第一回路连接到第一泵的第一致动器和设置在第一致动器和第一泵之间的第一切换阀。 第一切换阀可被配置成控制通过第一致动器的流体流动方向。 液压系统还可以具有经由第一回路与第一致动器并联的第一泵连接的第二致动器，以及设置在第二致动器和第一泵之间的第二切换阀。 第二切换阀可以被配置为控制通过第二致动器的流体流动方向。 液压系统还可以具有与第一回路相关联的调节阀，并配置成在第一或第二切换阀的致动期间选择性地调制第一回路的压力。
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公开(公告)号：US20130098014A1
公开(公告)日：2013-04-25
申请号：US13278788
申请日：2011-10-21
IPC分类号： F15B13/02
CPC分类号： E02F9/2285 , E02F9/2228 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B11/17 , F15B2211/20546 , F15B2211/20561 , F15B2211/265 , F15B2211/3111 , F15B2211/3116 , F15B2211/3144 , F15B2211/329 , F15B2211/7053 , F15B2211/7058 , Y02P80/13
摘要： A hydraulic system is disclosed. The hydraulic system may have a unidirectional variable displacement first pump, a first actuator connected to the first pump via a closed-loop first circuit, and a first switching valve disposed between the first actuator and the first pump. The first switching valve may be configured to control a fluid flow direction through the first actuator. The hydraulic system may also have a second actuator connected to the first pump in parallel with the first actuator via the first circuit, and a second switching valve disposed between the second actuator and the first pump. The second switching valve may be configured to control a fluid flow direction through the second actuator. The hydraulic system may further have a modulation valve associated with the first circuit and configured to selectively modulate a pressure of the first circuit during actuation of the first or second switching valves.
摘要翻译： 公开了一种液压系统。 液压系统可以具有单向可变排量的第一泵，通过闭环第一回路连接到第一泵的第一致动器和设置在第一致动器和第一泵之间的第一切换阀。 第一切换阀可被配置成控制通过第一致动器的流体流动方向。 液压系统还可以具有经由第一回路与第一致动器并联的第一泵连接的第二致动器，以及设置在第二致动器和第一泵之间的第二切换阀。 第二切换阀可以被配置为控制通过第二致动器的流体流动方向。 液压系统还可以具有与第一回路相关联的调节阀，并配置成在第一或第二切换阀的致动期间选择性地调制第一回路的压力。
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公开(公告)号：US20130098013A1
公开(公告)日：2013-04-25
申请号：US13278745
申请日：2011-10-21
IPC分类号： F15B11/17
CPC分类号： F15B11/17 , E02F9/2242 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B2211/20523 , F15B2211/20546 , F15B2211/20561 , F15B2211/20576 , F15B2211/265 , F15B2211/3144 , F15B2211/329 , F15B2211/7053 , F15B2211/7058 , Y02P80/13
摘要： A hydraulic system is disclosed. The hydraulic system may have a plurality of pumps with unidirectional functionality and being variable displacement, a common discharge passage connected to the plurality of pumps, and a common intake passage connected to the plurality of pumps. The hydraulic system may also have at least one actuator connected in closed-loop manner to the common discharge and common intake passages, and a switching valve associated with the at least one actuator and disposed between the at least one actuator and the common discharge and intake passages. The hydraulic system may additionally have at least one isolation valve configured to selectively isolate a portion of the common discharge passage and a portion of the common intake passage associated with one pump of the plurality of pumps from another pump of the plurality of pumps.
摘要翻译： 公开了一种液压系统。 液压系统可以具有多个具有单向功能并具有可变排量的泵，连接到多个泵的公共排放通道以及连接到多个泵的公共进气通道。 液压系统还可以具有至少一个致动器，其以闭环方式连接到公共排放和公共进气通道，以及与至少一个致动器相关联并设置在至少一个致动器和公共排放和进气口之间的切换阀 段落。 液压系统可以另外具有至少一个隔离阀，该隔离阀构造成选择性地将公共排放通道的一部分和与多个泵中的一个泵相关联的公共进气通道的一部分与多个泵中的另一个泵隔离。
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公开(公告)号：US20100043418A1
公开(公告)日：2010-02-25
申请号：US12575716
申请日：2009-10-08
IPC分类号： F15B13/00
CPC分类号： F15B11/163 , F15B11/006 , F15B21/08 , F15B2211/253 , F15B2211/30535 , F15B2211/30575 , F15B2211/3144 , F15B2211/327 , F15B2211/6313 , F15B2211/7053
摘要： A hydraulic system is disclosed having at least two hydraulic circuits. The disclosed system compares pressures between the hydraulic circuits and alters valve commands of the circuit associated with higher pressures in order to reduce overall system pressure.
摘要翻译： 公开了具有至少两个液压回路的液压系统。 所公开的系统比较了液压回路之间的压力并改变了与较高压力相关联的回路的阀门命令，以便降低总体系统压力。
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公开(公告)号：US20130152565A1
公开(公告)日：2013-06-20
申请号：US13328716
申请日：2011-12-16
申请人： Pengfei Ma , Jeffrey L. Kuehn , Jeremy T. Peterson
发明人： Pengfei Ma , Jeffrey L. Kuehn , Jeremy T. Peterson
IPC分类号： F15B1/027
CPC分类号： F15B21/14 , E02F9/123 , E02F9/2217 , E02F9/2242 , E02F9/2292 , E02F9/2296 , F15B2211/20546 , F15B2211/20569 , F15B2211/20576 , F15B2211/625 , F15B2211/88
摘要： A hydraulic system for a machine is disclosed. The hydraulic system may have a pump configured to pressurize fluid, a swing motor driven by pressurized fluid to swing a body of the machine relative to an undercarriage, and a first circuit fluidly connecting the pump to the swing motor. The hydraulic system may also have an energy recovery motor mechanically connected to the swing motor, at least one accumulator, and a second circuit fluidly connecting the at least one accumulator to the energy recovery motor.
摘要翻译： 公开了一种用于机器的液压系统。 液压系统可以具有构造成对流体加压的泵，由加压流体驱动的摆动马达相对于起落架摆动机体，以及将泵流体连接到回转马达的第一回路。 液压系统还可以具有机械地连接到回转马达，至少一个储能器和将至少一个蓄能器流体连接到能量回收马达的第二回路的能量回收马达。
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公开(公告)号：US20130008246A1
公开(公告)日：2013-01-10
申请号：US13178797
申请日：2011-07-08
CPC分类号： G01M99/00
摘要： A method for estimating a fluid charge of a hydraulic accumulator includes determining a first accumulator pressure at a first time with a pressure sensor, the first time during accumulator charging; determining a second accumulator pressure at a second time with the pressure sensor, the second time during accumulator charging; determining a first fan speed at the first time; determining a second fan speed at the second time; and estimating the fluid charge of the hydraulic accumulator as a function of the first accumulator pressure, the second accumulator pressure, the first fan speed, and the second fan speed.
摘要翻译： 用于估计液压蓄能器的流体充量的方法包括：在蓄能器充电期间第一次使用压力传感器确定第一时间的第一蓄能器压力; 在第二时间用压力传感器确定第二蓄能器压力，在蓄电池充电期间第二次; 首次确定第一个风扇速度; 在第二时间确定第二风扇速度; 以及作为所述第一蓄能器压力，所述第二蓄能器压力，所述第一风扇速度和所述第二风扇速度的函数来估计所述液压蓄能器的流体充量。
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公开(公告)号：US20120134848A1
公开(公告)日：2012-05-31
申请号：US12957094
申请日：2010-11-30
CPC分类号： E02F9/226 , F01P7/044 , F15B21/14 , F15B2211/20523 , F15B2211/20561 , F15B2211/20569 , F15B2211/27 , F15B2211/305 , F15B2211/31529 , F15B2211/625 , F15B2211/633 , F15B2211/6336 , F15B2211/665 , F15B2211/6652 , F15B2211/7058 , F15B2211/88
摘要： A hydraulic fan circuit is disclosed. The hydraulic fan circuit may have a primary pump, a high-pressure passage fluidly connected to the primary pump, and a low-pressure passage fluidly connected to the primary pump. The hydraulic fan circuit may also have at least one accumulator in selective fluid communication with at least one of the high- and low-pressure passages, a motor, and a fan connected to the motor. The hydraulic fan circuit may further have a fan isolation valve fluidly connected to the high- and low-pressure passages. The fan isolation valve may be movable between a flow-passing position at which the motor is fluidly connected to the primary pump via the high- and low-pressure passages, and a flow-blocking position at which the motor is substantially isolated from the primary pump.
摘要翻译： 公开了一种液压风扇电路。 液压风扇回路可以具有主泵，与主泵流体连接的高压通道和与主泵流体连接的低压通路。 液压风扇回路还可以具有至少一个与高压通道和低压通道中的至少一个选择性流体连通的蓄能器，马达和连接到马达的风扇。 液压风扇回路还可以具有与高压通道和低压通道流体连接的风扇隔离阀。 风扇隔离阀可以在电动机通过高压和低压通道流体地连接到初级泵的流动通过位置之间移动，以及电动机基本上与主电动机隔离的阻流位置 泵。
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公开(公告)号：US08984872B2
公开(公告)日：2015-03-24
申请号：US13178797
申请日：2011-07-08
IPC分类号： G01M99/00
CPC分类号： G01M99/00
摘要： A method for estimating a fluid charge of a hydraulic accumulator includes determining a first accumulator pressure at a first time with a pressure sensor, the first time during accumulator charging; determining a second accumulator pressure at a second time with the pressure sensor, the second time during accumulator charging; determining a first fan speed at the first time; determining a second fan speed at the second time; and estimating the fluid charge of the hydraulic accumulator as a function of the first accumulator pressure, the second accumulator pressure, the first fan speed, and the second fan speed.
摘要翻译： 用于估计液压蓄能器的流体充量的方法包括：在蓄能器充电期间第一次使用压力传感器确定第一时间的第一蓄能器压力; 在第二时间用压力传感器确定第二蓄能器压力，在蓄电池充电期间第二次; 首次确定第一个风扇速度; 在第二时间确定第二风扇速度; 以及作为所述第一蓄能器压力，所述第二蓄能器压力，所述第一风扇速度和所述第二风扇速度的函数来估计所述液压蓄能器的流体充量。
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