公开(公告)号：US20140060025A1

公开(公告)日：2014-03-06

申请号：US13718938

申请日：2012-12-18

Applicant: CATERPILLAR INC.

Inventor： Rustu CESUR ,  Jiao ZHANG ,  Tonglin SHANG ,  Bryan J. HILLMAN ,  Peter SPRING ,  Lawrence J. TOGNETTI ,  Pengfei MA

IPC: F15B21/08

CPC classification number: F15B21/08 ,  E02F9/2203 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/17 ,  F15B2211/20546 ,  F15B2211/20576 ,  F15B2211/30575 ,  F15B2211/30595 ,  F15B2211/327 ,  F15B2211/6306 ,  F15B2211/6309 ,  F15B2211/6346 ,  F15B2211/6654 ,  F15B2211/7135 ,  F15B2211/7142 ,  F15B2211/75 ,  F15B2211/86

Abstract: A hydraulic control system is disclosed for use with a machine. The hydraulic control system may have a tank, a pump, an actuator, and a control valve configured to direct fluid from the pump to the actuator and from the actuator to the tank. The hydraulic control system may also have a pressure sensor to generate a first signal indicative of a pressure differential across the control valve, an operator input device to generate a second signal indicative of a desired movement of the actuator, and a controller. The controller may be configured to make a first determination of an opening amount of the control valve based on the second signal, and to make a second determination based on the first signal of whether the opening amount will result in overspeeding of the actuator. The controller may also be configured to reduce the opening amount based on the second determination.

Abstract translation: 公开了一种用于机器的液压控制系统。 液压控制系统可以具有罐，泵，致动器和配置成将流体从泵引导到致动器并且从致动器引导到罐的控制阀。 液压控制系统还可以具有压力传感器以产生指示跨越控制阀的压力差的第一信号，操作者输入装置以产生指示致动器的期望运动的第二信号和控制器。 控制器可以被配置为基于第二信号来首先确定控制阀的打开量，并且基于第一信号来确定开启量是否将导致致动器的超速。 控制器还可以被配置为基于第二确定来减少打开量。

公开(公告)号：US20140060024A1

公开(公告)日：2014-03-06

申请号：US13718922

申请日：2012-12-18

Applicant: CATERPILLAR INC.

Inventor： Jiao ZHANG ,  Pengfei MA ,  Tonglin SHANG ,  Rustu CESUR ,  Bryan J. HILLMAN ,  Peter SPRING ,  Lawrence J. TOGNETTI ,  Randal N. PETERSON ,  Dayao CHEN

IPC: F15B21/14

CPC classification number: F15B21/14 ,  F15B1/024 ,  F15B2211/625 ,  F15B2211/6306 ,  F15B2211/6313 ,  F15B2211/6336 ,  F15B2211/7058 ,  F15B2211/75 ,  F15B2211/755 ,  F15B2211/88

Abstract: A hydraulic control system is disclosed for use with a machine. The hydraulic control system may have a tank, a pump, a swing motor, and at least one control valve configured to control fluid flow between the pump, the swing motor, and the tank. The hydraulic system may also have an accumulator configured to selectively receive pressurized fluid discharged from the swing motor and selectively supply pressurized fluid to the swing motor, at least one accumulator valve, and a controller. The controller may be configured to receive input indicative of a difference between desired and actual speeds of the swing motor, and determine if the swing motor is accelerating or decelerating based on the difference. The controller may also be configured to control the at least one accumulator valve to cause the accumulator to selectively receive or supply pressurized fluid only when the swing motor is accelerating or decelerating.

Abstract translation: 公开了一种用于机器的液压控制系统。 液压控制系统可以具有罐，泵，回转马达和构造成控制泵，回转马达和罐之间的流体流动的至少一个控制阀。 液压系统还可以具有蓄能器，其被配置为选择性地接收从回转马达排出的加压流体，并且选择性地将加压流体供应到回转马达，至少一个储能阀和控制器。 控制器可以被配置为接收指示回转马达的期望速度和实际速度之间的差异的输入，并且基于该差异来确定回转马达是加速还是减速。 控制器还可以被配置成控制至少一个蓄能阀，使得蓄能器仅在回转马达正在加速或减速时有选择地接收或供应加压流体。

公开(公告)号：US20140060023A1

公开(公告)日：2014-03-06

申请号：US13718882

申请日：2012-12-18

Applicant: CATERPILLAR INC.

Inventor： Jiao ZHANG ,  Lawrence J. TOGNETTI ,  Pengfei MA ,  Dayao CHEN ,  John FERRAZ, JR. ,  Tetsuya YOSHINO

IPC: F15B1/027

CPC classification number: F15B1/027 ,  F15B1/024 ,  F15B21/14 ,  F15B2211/625 ,  F15B2211/6306 ,  F15B2211/6313 ,  F15B2211/7058 ,  F15B2211/88

Abstract: A hydraulic control system is disclosed for use in a machine. The hydraulic control system may have a work tool, a motor configured to swing the work tool, a tank, a pump configured to draw fluid from the tank and pressurize the fluid, and a control valve operable to control fluid flow from the pump to the motor and from the motor to the tank via first and second chamber passages to affect motion of the motor. The hydraulic control system may also have an accumulator, and an accumulator circuit configured to selectively direct fluid discharged from the motor to the accumulator for storage and to direct stored fluid from the accumulator to the motor to assist the motor. The hydraulic control system may further have a selector valve configured to selectively connect a higher pressure one of the first and second chamber passages with the accumulator, and a single pressure relief valve disposed within the accumulator circuit and configured to relief pressure from opposing sides of the motor.

Abstract translation: 公开了一种在机器中使用的液压控制系统。 液压控制系统可以具有工作工具，构造成摆动工作工具的电动机，一个构造成从罐中抽出流体并对流体加压的泵;以及控制阀，该控制阀可操作以控制从泵到 电动机，并通过第一和第二室通道从电动机到燃料箱，以影响电动机的运动。 液压控制系统还可以具有蓄能器和蓄电池电路，其被配置为选择性地将从电动机排出的流体引导到蓄电池以进行存储，并将存储的流体从蓄能器引导到电动机以辅助电动机。 液压控制系统还可以具有一个选择阀，其配置成选择性地将第一和第二室通道中的较高压力的一个与蓄能器连接，以及一个设置在蓄电池回路内的单个泄压阀， 发动机。