公开(公告)号：US10344784B2

公开(公告)日：2019-07-09

申请号：US14708788

申请日：2015-05-11

Applicant: Caterpillar Inc.

Inventor： Jeremy Todd Peterson ,  Jeffrey Lee Kuehn ,  Michael L. Knussman ,  Michael T. Verkuilen

IPC: F15B21/14 ,  F15B1/02 ,  F15B1/033 ,  F15B7/00 ,  E02F9/22

Abstract: A hydraulic system is disclosed. The hydraulic system may include a fluid source and an actuator having a first passage and a second passage. The hydraulic system may further include a pump having a first port connected to the first passage, a second port connected to the second passage, and a third port connected to the fluid source. The first and second passages may be connected to each other via the first and second ports, and the first passage and the low-pressure fluid source may be connected to each other via the first and third ports. They hydraulic system may further include a charge circuit fluidly connected to the first and second passages, and at least one damping control valve configured to selectively allow fluid from the pump to pass into the charge circuit to dampen pressure oscillations between the actuator and the pump.

公开(公告)号：US20140178164A1

公开(公告)日：2014-06-26

申请号：US13721313

申请日：2012-12-20

Applicant: CATERPILLAR INC.

Inventor： Jeremy T. Peterson ,  Jeffrey L. Kuehn ,  David J. Lomax ,  Michael L. Knussman

IPC: E02F3/43 ,  E02F9/22

CPC classification number: E02F3/432 ,  E02F9/0841 ,  E02F9/2207 ,  E02F9/2217 ,  F15B1/021 ,  F15B1/033 ,  F15B21/082 ,  F15B2211/625 ,  F15B2211/6346 ,  F15B2211/6653 ,  F15B2211/6658 ,  F15B2211/7128 ,  F15B2211/85 ,  F15B2211/8606 ,  F15B2211/8616 ,  Y10T137/85986

Abstract: A machine is disclosed. The machine can include a frame and ground engaging propulsion elements coupled with the frame. A hydraulically actuated implement system can be coupled with the frame, and can include a linkage configured to couple with an implement, a hydraulic actuator coupled with the linkage and the frame, and a ride control and downforce control circuit configured to implement a ride control mode and a downforce control mode. The ride control mode can be configured to maintain a pressure of hydraulic fluid in the hydraulic actuator at a ride control pressure, and the downforce control mode can be configured to maintain the pressure of hydraulic fluid in the hydraulic actuator at a downforce control pressure to oppose the weight of the linkage and the implement such that the implement engages a substrate with a predetermined down force pressure which is proportionate to the downforce control pressure.

Abstract translation: 公开了一种机器。 机器可以包括与框架联接的框架和接地推进元件。 液压致动的工具系统可以与框架联接，并且可以包括构造成与工具联接的联动装置，与联动装置和框架联接的液压致动器以及被配置成实现行驶控制模式的行驶控制和下压力控制电路 和下压力控制模式。 行驶控制模式可以被配置为在液压致动器中保持液压流体在行驶控制压力下的压力，并且下压力控制模式可被构造成将液压致动器中的液压流体的压力维持在下压力控制压力 联动装置和工具的重量使得工具以与下压力控制压力成比例的预定下压力与基板接合。

公开(公告)号：US20160108933A1

公开(公告)日：2016-04-21

申请号：US14981977

申请日：2015-12-29

Applicant: Caterpillar Inc.

Inventor： Michael L. Knussman ,  Jeremy T. Peterson ,  Jeffrey L. Kuehn

IPC: F15B1/02 ,  F15B11/024

CPC classification number: F15B1/024 ,  F15B1/027 ,  F15B21/14 ,  F15B2211/20546 ,  F15B2211/212 ,  F15B2211/3058 ,  F15B2211/41572 ,  F15B2211/761 ,  F15B2211/88 ,  Y02P80/13

Abstract: A method for storing and reusing hydraulic energy in a machine is disclosed. The method includes transferring the hydraulic energy from an actuator to an upstream side of a motor pump via a first valve, during a normal mode. The method includes directing excess hydraulic energy from a downstream side of the motor pump to an accumulator by opening an accumulator valve and closing a bypass valve, during an energy saving mode. The method includes retrieving stored hydraulic energy from the accumulator to the upstream side of the motor pump by opening the accumulator valve, during an energy discharging mode.

Abstract translation: 公开了一种用于在机器中储存和重复使用液压能量的方法。 该方法包括在正常模式期间将液压能量从致动器经由第一阀传递到电动泵的上游侧。 该方法包括在节能模式期间通过打开蓄能阀并关闭旁通阀来将多余的液压能量从电动泵的下游侧引导到蓄能器。 该方法包括在能量放电模式期间通过打开蓄能器阀来从蓄能器将储存的液压能量提取到电动泵的上游侧。

公开(公告)号：US09932993B2

公开(公告)日：2018-04-03

申请号：US14936137

申请日：2015-11-09

Applicant: Caterpillar Inc.

Inventor： Jiao Zhang ,  Dayao Chen ,  Jeremy T. Peterson ,  Michael L. Knussman

IPC: F15B11/024 ,  F15B11/08 ,  F15B1/04 ,  F15B1/26 ,  F15B21/14 ,  F15B1/027 ,  F15B1/02 ,  F15B13/02

CPC classification number: F15B11/024 ,  F15B1/024 ,  F15B1/027 ,  F15B1/04 ,  F15B1/26 ,  F15B11/08 ,  F15B13/021 ,  F15B21/14 ,  F15B2201/00 ,  F15B2211/20546 ,  F15B2211/20569 ,  F15B2211/212 ,  F15B2211/3058 ,  F15B2211/3133 ,  F15B2211/6306 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/7142 ,  F15B2211/88

Abstract: A hydraulic control system for a machine is provided. The hydraulic control system includes a fluid reservoir, a pump motor and an accumulator. The pump motor is configured to provide pressurized fluid and to receive fluid to provide a power output. The hydraulic control system further includes a hydraulic actuator having a first and a second chamber, a first valve, a regenerative valve, and a controller. The controller is in communication with the first valve and the regenerative valve to selectively actuate the regenerative valve to allow flow of a first portion of the fluid from the first chamber to the second chamber. The controller is further configured to selectively actuate the first valve to allow flow of a second portion of the fluid from the first chamber through the pump motor to provide the power output to a shaft of a power source.

公开(公告)号：US09677572B2

公开(公告)日：2017-06-13

申请号：US14981977

申请日：2015-12-29

Applicant: Caterpillar Inc.

Inventor： Michael L. Knussman ,  Jeremy T. Peterson ,  Jeffrey L. Kuehn

IPC: F15B21/14 ,  F15B1/02 ,  F15B1/027

CPC classification number: F15B1/024 ,  F15B1/027 ,  F15B21/14 ,  F15B2211/20546 ,  F15B2211/212 ,  F15B2211/3058 ,  F15B2211/41572 ,  F15B2211/761 ,  F15B2211/88 ,  Y02P80/13

Abstract: A method for storing and reusing hydraulic energy in a machine is disclosed. The method includes transferring the hydraulic energy from an actuator to an upstream side of a motor pump via a first valve, during a normal mode. The method includes directing excess hydraulic energy from a downstream side of the motor pump to an accumulator by opening an accumulator valve and closing a bypass valve, during an energy saving mode. The method includes retrieving stored hydraulic energy from the accumulator to the upstream side of the motor pump by opening the accumulator valve, during an energy discharging mode.

公开(公告)号：US20170130744A1

公开(公告)日：2017-05-11

申请号：US14936137

申请日：2015-11-09

Applicant: Caterpillar Inc.

Inventor： Jiao Zhang ,  Dayao Chen ,  Jeremy T. Peterson ,  Michael L. Knussman

IPC: F15B11/024 ,  F15B1/04 ,  F15B1/26 ,  F15B11/08

CPC classification number: F15B11/024 ,  F15B1/024 ,  F15B1/027 ,  F15B1/04 ,  F15B1/26 ,  F15B11/08 ,  F15B13/021 ,  F15B21/14 ,  F15B2201/00 ,  F15B2211/20546 ,  F15B2211/20569 ,  F15B2211/212 ,  F15B2211/3058 ,  F15B2211/3133 ,  F15B2211/6306 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/7142 ,  F15B2211/88

Abstract: A hydraulic control system for a machine is provided. The hydraulic control system includes a fluid reservoir, a pump motor and an accumulator. The pump motor is configured to provide pressurized fluid and to receive fluid to provide a power output. The hydraulic control system further includes a hydraulic actuator having a first and a second chamber, a first valve, a regenerative valve, and a controller. The controller is in communication with the first valve and the regenerative valve to selectively actuate the regenerative valve to allow flow of a first portion of the fluid from the first chamber to the second chamber. The controller is further configured to selectively actuate the first valve to allow flow of a second portion of the fluid from the first chamber through the pump motor to provide the power output to a shaft of a power source.

公开(公告)号：US09068323B2

公开(公告)日：2015-06-30

申请号：US13721313

申请日：2012-12-20

Applicant: Caterpillar Inc.

Inventor： Jeremy T. Peterson ,  Jeffrey L. Kuehn ,  David J. Lomax ,  Michael L. Knussman

IPC: G05D1/02 ,  E02F3/43 ,  E02F9/08 ,  E02F9/22 ,  F15B1/02 ,  F15B21/08 ,  F15B1/033

CPC classification number: E02F3/432 ,  E02F9/0841 ,  E02F9/2207 ,  E02F9/2217 ,  F15B1/021 ,  F15B1/033 ,  F15B21/082 ,  F15B2211/625 ,  F15B2211/6346 ,  F15B2211/6653 ,  F15B2211/6658 ,  F15B2211/7128 ,  F15B2211/85 ,  F15B2211/8606 ,  F15B2211/8616 ,  Y10T137/85986

Abstract: A machine is disclosed. The machine can include a frame and ground engaging propulsion elements coupled with the frame. A hydraulically actuated implement system can be coupled with the frame, and can include a linkage configured to couple with an implement, a hydraulic actuator coupled with the linkage and the frame, and a ride control and downforce control circuit configured to implement a ride control mode and a downforce control mode. The ride control mode can be configured to maintain a pressure of hydraulic fluid in the hydraulic actuator at a ride control pressure, and the downforce control mode can be configured to maintain the pressure of hydraulic fluid in the hydraulic actuator at a downforce control pressure to oppose the weight of the linkage and the implement such that the implement engages a substrate with a predetermined down force pressure which is proportionate to the downforce control pressure.

Abstract translation: 公开了一种机器。 机器可以包括与框架联接的框架和接地推进元件。 液压致动的工具系统可以与框架联接，并且可以包括构造成与工具联接的联动装置，与联动装置和框架联接的液压致动器以及被配置成实现行驶控制模式的行驶控制和下压力控制电路 和下压力控制模式。 行驶控制模式可以被配置为在液压致动器中保持液压流体在行驶控制压力下的压力，并且下压力控制模式可被构造成将液压致动器中的液压流体的压力维持在下压力控制压力 联动装置和工具的重量使得工具以与下压力控制压力成比例的预定下压力与基板接合。