公开(公告)号：US20140034133A1

公开(公告)日：2014-02-06

申请号：US13832085

申请日：2013-03-15

Applicant: CATERPILLAR INC.

Inventor： Matthew J. Beschorner ,  Aleksandar M. Egelja ,  Eric Hughes ,  Mikhail Sorokine

IPC: F15B19/00 ,  F15B20/00 ,  F16K31/12 ,  F16K37/00

CPC classification number: F15B19/005 ,  F15B20/008 ,  F15B2211/30575 ,  F15B2211/329 ,  F15B2211/36 ,  F15B2211/6316 ,  F15B2211/8636 ,  F15B2211/87 ,  F16K11/0712 ,  F16K31/12 ,  F16K37/0041 ,  F16K37/005 ,  Y10T137/0318 ,  Y10T137/7768 ,  Y10T137/8326

Abstract: A system can include one or more valve arrangements with a working chamber to receive a working fluid at a first pressure, and a control chamber to receive fluid at a second pressure. A dynamic seal can be disposed on a land of a valve element. A supply passage can be in communication between the control chamber and a tank and can include a check valve. A relief valve can be disposed between the check valve and the control chamber. A pilot pump and another relief valve may be disposed upstream of the check valve. The relief valve downstream of the check valve can have a higher pressure limit than the downstream one. A pressure sensor may be disposed between the check valve and the control chamber and used to warn the operator of a high pressure in the control chamber.

Abstract translation: 系统可以包括具有工作室的一个或多个阀装置，以在第一压力下接收工作流体，以及控制室，以在第二压力下接收流体。 可以在阀元件的台面上设置动态密封件。 供应通道可以在控制室和罐之间连通，并且可以包括止回阀。 安全阀可以设置在止回阀和控制室之间。 先导泵和另一安全阀可以设置在止回阀的上游。 止回阀下游的安全阀可以具有比下游更高的压力极限。 压力传感器可以设置在止回阀和控制室之间，并且用于警告操作者控制室中的高压。

公开(公告)号：US09145660B2

公开(公告)日：2015-09-29

申请号：US13714017

申请日：2012-12-13

Applicant: Caterpillar Inc.

Inventor： Randal N. Peterson ,  Aleksandar M. Egelja ,  Rustu Cesur

IPC: E02F9/22 ,  F15B11/042 ,  F15B20/00 ,  F15B21/04

CPC classification number: E02F9/2292 ,  E02F9/2235 ,  E02F9/2242 ,  E02F9/226 ,  E02F9/2296 ,  F15B11/0423 ,  F15B20/007 ,  F15B21/042 ,  F15B2211/20546 ,  F15B2211/20576 ,  F15B2211/2656 ,  F15B2211/3052 ,  F15B2211/30595 ,  F15B2211/327 ,  F15B2211/50536 ,  F15B2211/62 ,  F15B2211/6309 ,  F15B2211/6346 ,  F15B2211/6652 ,  F15B2211/6658 ,  F15B2211/7135 ,  F15B2211/7142 ,  F15B2211/85 ,  F15B2211/8603 ,  F15B2211/8606

Abstract: A hydraulic control system for a machine is disclosed. The hydraulic control system may have a tank, a pump configured to draw fluid from the tank and pressurize the fluid, an actuator, and a control valve configured to direct fluid from the pump to the actuator and from the actuator to the tank to move the actuator. The hydraulic system may also have a main relief valve movable away from a closed position to pass pressurized fluid to the tank when a pressure of the fluid directed to the actuator exceeds a first threshold pressure, and a controller in communication with the pump. The controller may be configured to selectively reduce a displacement of the pump after the main relief valve has moved away from the closed position when the pressure of the fluid directed to the actuator exceeds a second threshold pressure.

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，泵被配置成从罐中抽出流体并对流体进行加压，致动器和控制阀被配置为将流体从泵引导到致动器并且从致动器引导到罐以移动 执行器。 液压系统还可以具有主动释放阀，其可在远离关闭位置移动，以便在被引导至致动器的流体的压力超过第一阈值压力时将加压流体传递到罐，以及与泵连通的控制器。 控制器可以被配置为当导向致动器的流体的压力超过第二阈值压力时，在主安全阀已经远离关闭位置移动之后选择性地减小泵的位移。

公开(公告)号：US20220381006A1

公开(公告)日：2022-12-01

申请号：US17334653

申请日：2021-05-28

Applicant: Caterpillar Inc.

Inventor： Kalpeshkumar N. Patel ,  Darren A. Blum ,  Aleksandar M. Egelja ,  Barrett A. Flinn ,  Ryan P. McEnaney ,  Trung Q. Nguyen ,  David J. Lomax

IPC: E02F9/22 ,  F04B23/06 ,  F04B17/03 ,  F04B49/06 ,  F04B49/20 ,  E02F3/43 ,  E02F9/20 ,  E02F9/12 ,  E02F3/32 ,  E02F3/42 ,  F15B15/20

Abstract: One embodiment of a hydraulic system for a machine has a first hydraulic circuit including a first pump coupled to a first hydraulic actuator configured to move a first implement of the machine. A second hydraulic circuit includes a second pump coupled to a second hydraulic actuator configured to move a second implement. An electric motor mechanically couples to the first pump and to the second pump. An operator interface receives input from an operator requesting movement of the first and second implements. A controller communicatively coupled to the electric motor and to the operator interface determines, based on the requested movement of the first and second implements respectively, first and second flow allocations respectively for the first and second pumps and determines respective target displacements for the first and second pumps. The controller also determines first and second target electric motor speeds based on the target displacements for the first and second pumps, respectively, and controls the electric motor to operate at the larger of the first and second target electric motor speeds.

公开(公告)号：US20140208728A1

公开(公告)日：2014-07-31

申请号：US13752085

申请日：2013-01-28

Applicant: CATERPILLAR INC.

Inventor： Pengfei Ma ,  Victor Wen ,  Jiao Zhang ,  Dayao Chen ,  Tonglin Shang ,  Aleksandar M. Egelja

IPC: E02F9/22 ,  F15B11/042 ,  F15B13/04

CPC classification number: E02F9/2217 ,  E02F9/123 ,  E02F9/2296 ,  F15B1/024 ,  F15B11/006 ,  F15B11/042 ,  F15B13/04 ,  F15B21/14 ,  F15B2211/20546 ,  F15B2211/212 ,  F15B2211/30575 ,  F15B2211/6306 ,  F15B2211/6313 ,  F15B2211/6658 ,  F15B2211/7058 ,  F15B2211/88

Abstract: A hydraulic control system includes a swing control valve between a pump and a swing motor to control flow to/from the swing motor, and a selector valve between an accumulator and the swing motor to regulate fluid flow. A controller is configured to receive inputs indicative of the pressure differential between the accumulator and conduit between the pump and swing motor, and a swing motor command, calculate a target swing motor flow based on the swing motor command input, and modulate operation of the swing control valve and the selector valve to regulate a swing speed.

Abstract translation: 液压控制系统包括在泵和回转马达之间的回转控制阀，以控制往返于回转马达的流量，以及在蓄能器和回转马达之间的选择阀以调节流体流量。 控制器被配置为接收表示在泵和回转马达之间的蓄能器与导管之间的压力差的输入和摆动马达指令，基于回转马达指令输入计算目标回转马达流量，并且调节摆动的运行 控制阀和选择阀调节摆动速度。

公开(公告)号：US09394928B2

公开(公告)日：2016-07-19

申请号：US13832085

申请日：2013-03-15

Applicant: Caterpillar Inc.

Inventor： Matthew J. Beschorner ,  Aleksandar M. Egelja ,  Eric Hughes ,  Mikhail Sorokine

IPC: F17D1/00 ,  F15B19/00 ,  F16K37/00 ,  F15B20/00 ,  F16K31/12 ,  F16K11/07

CPC classification number: F15B19/005 ,  F15B20/008 ,  F15B2211/30575 ,  F15B2211/329 ,  F15B2211/36 ,  F15B2211/6316 ,  F15B2211/8636 ,  F15B2211/87 ,  F16K11/0712 ,  F16K31/12 ,  F16K37/0041 ,  F16K37/005 ,  Y10T137/0318 ,  Y10T137/7768 ,  Y10T137/8326

Abstract: A system can include one or more valve arrangements with a working chamber to receive a working fluid at a first pressure, and a control chamber to receive fluid at a second pressure. A dynamic seal can be disposed on a land of a valve element. A supply passage can be in communication between the control chamber and a tank and can include a check valve. A relief valve can be disposed between the check valve and the control chamber. A pilot pump and another relief valve may be disposed upstream of the check valve. The relief valve downstream of the check valve can have a higher pressure limit than the downstream one. A pressure sensor may be disposed between the check valve and the control chamber and used to warn the operator of a high pressure in the control chamber.

Abstract translation: 系统可以包括具有工作室的一个或多个阀装置，以在第一压力下接收工作流体，以及控制室，以在第二压力下接收流体。 可以在阀元件的台面上设置动态密封件。 供应通道可以在控制室和罐之间连通，并且可以包括止回阀。 安全阀可以设置在止回阀和控制室之间。 先导泵和另一安全阀可以设置在止回阀的上游。 止回阀下游的安全阀可以具有比下游更高的压力极限。 压力传感器可以设置在止回阀和控制室之间，并且用于警告操作者控制室中的高压。