公开(公告)号：US6068428A

公开(公告)日：2000-05-30

申请号：US965958

申请日：1997-11-07

Applicant: Satish S. Nair ,  Hongliu Du

Inventor： Satish S. Nair ,  Hongliu Du

IPC: B65G51/01 ,  B41J2/00

CPC classification number: B65G51/01

Abstract: Apparatus for spacing consecutive capsules of solid material traveling as a capsule train in a pipeline in which the capsules are carried by a fluid flowing through the pipeline includes a separation system interposed between upstream and downstream portions of the pipeline for receiving the train of capsules. The separation system passes consecutively separated capsules within the capsule train to the downstream portion. The separation system is constructed for increasing the spacing between consecutive capsules within the capsule train in the downstream portion of the pipeline after passing through the separation system. The volume of fluid flowing from an outlet location of the separation system is substantially the same as the volume of fluid flowing into an inlet location of the separation system. A method for boosting fluid pressure in the capsule carrying pipeline consecutively spaces capsules within a capsule train as the train approaches a dual lock booster station to permit the booster station to alternately divert the trains into the first and second locks of the booster station.

Abstract translation: 用于将固体材料间隔连续的胶囊的装置用于在管道中作为胶囊序列行进的胶囊，其中胶囊由流过管道的流体承载，包括插入在管道的上游和下游部分之间用于接收胶囊列的分离系统。 分离系统将胶囊系列内的连续分离的胶囊通到下游部分。 分离系统被构造用于在通过分离系统之后增加管道下游部分中的胶囊序列内的连续胶囊之间的间隔。 从分离系统的出口位置流动的流体的体积与流入分离系统的入口位置的流体的体积基本相同。 随着列车接近双重增压站，增强胶囊载运管道中的流体压力的连续空间使胶囊内的胶囊的方法允许升压站将火车交替地转移到增压站的第一和第二锁中。

公开(公告)号：US08790091B2

公开(公告)日：2014-07-29

申请号：US13116709

申请日：2011-05-26

Applicant: Viral S. Mehta ,  Noah D. Manring ,  Hongliu Du ,  Bryan E. Nelson

Inventor： Viral S. Mehta ,  Noah D. Manring ,  Hongliu Du ,  Bryan E. Nelson

IPC: F04B1/32

CPC classification number: F04B1/306

Abstract: A pump is disclosed. The pump may have a housing, a body rotatably disposed within the housing and at least partially defining a plurality of barrels, a plurality of plungers associated with the plurality of barrels, and a swashplate tiltable by a swivel torque to vary a displacement of the plurality of plungers relative to the plurality of barrels. The pump may also have a port plate with an inlet port, a discharge port, and a protrusion. The port plate may be configured to engage an end of the rotatable body. The pump may further have at least one piston disposed within the housing and configured to selectively engage the protrusion of the port plate to rotate the port plate and adjust the swivel torque.

Abstract translation: 公开了一种泵。 泵可以具有壳体，可旋转地设置在壳体内并且至少部分地限定多个筒的主体，与多个筒相关联的多个柱塞，以及可由旋转扭矩倾斜以改变多个筒的位移的斜盘 的柱塞相对于多个筒。 泵还可以具有带有入口端口，排放口和突起的端口板。 端口板可以构造成接合可旋转主体的端部。 泵还可以具有设置在壳体内的至少一个活塞并且构造成选择性地接合端口板的突起以旋转端口板并调节旋转扭矩。

公开(公告)号：US20120282115A1

公开(公告)日：2012-11-08

申请号：US13102850

申请日：2011-05-06

Applicant: Hongliu Du ,  Patrick W. Sullivan

Inventor： Hongliu Du ,  Patrick W. Sullivan

IPC: F04B49/06

CPC classification number: F04B23/06 ,  F04B49/002 ,  F04B49/06 ,  F04B2205/09

Abstract: Methods, apparatuses, and computer program products for controlling the torque load of multiple variable displacement hydraulic pumps are described herein. A pump displacement limit for each variable displacement hydraulic pump is determined using a nonlinear control law to limit the total pump torque load of the variable displacement hydraulic pumps on the engine. The value of the actual pump displacement of each variable displacement hydraulic pump is controlled based upon the respective determined pump displacement limit.

Abstract translation: 这里描述了用于控制多个可变排量液压泵的扭矩负载的方法，装置和计算机程序产品。 使用非线性控制定律确定每个可变排量液压泵的泵排量极限，以限制发动机上可变排量液压泵的总泵转矩负载。 每个可变排量液压泵的实际泵排量的值根据相应确定的泵排量极限进行控制。

公开(公告)号：US20110094213A1

公开(公告)日：2011-04-28

申请号：US12874248

申请日：2010-09-02

Applicant: Hongliu Du

Inventor： Hongliu Du

IPC: F15B21/08 ,  F04B49/06

CPC classification number: F04B49/002

Abstract: An electro-hydraulic control system for pump control is disclosed. The hydraulic actuator is configured to control the inclination of a swashplate. The position of the hydraulic actuator is controlled by controlling the flow of pressurized fluid into and out of two pressure chambers, one on either side of the actuator. A fluid passageway is provided that selectively connects the passageway to tank. The passageway has an orifice for each pressure chamber, and the actuator is configured to selectively block all or a portion of one or more of the orifices, depending on the position of the actuator. The components of the control system are configured such that the actuator will return to a neutral or near-neutral position upon loss of electric power.

Abstract translation: 公开了一种用于泵控制的电液控制系统。 液压致动器被配置成控制斜盘的倾斜度。 液压致动器的位置通过控制加压流体流入和流出两个压力室的控制，一个在致动器的两侧。 提供了一种流体通道，其选择性地将通道连接到罐。 通道具有用于每个压力室的孔口，并且致动器构造成根据致动器的位置选择性地阻挡一个或多个孔的全部或一部分。 控制系统的部件被构造成使得在电力损失时致动器将返回中立或近中性位置。

公开(公告)号：US07130721B2

公开(公告)日：2006-10-31

申请号：US10975984

申请日：2004-10-29

Applicant: Jerry A. Wear ,  Hongliu Du ,  Greg A. Ferkol ,  Mark P. Vonderwell ,  Jeff L. Kuehn ,  Jason L. Brinkman

Inventor： Jerry A. Wear ,  Hongliu Du ,  Greg A. Ferkol ,  Mark P. Vonderwell ,  Jeff L. Kuehn ,  Jason L. Brinkman

IPC: G05D7/00 ,  F15B13/00

CPC classification number: G05D16/2073

Abstract: Consistent with an aspect of the disclosure, a method for controlling a hydraulic cylinder is provided. The hydraulic cylinder is provided with a chamber and configured to receive fluid from a valve. The method includes receiving a user input and determining a desired velocity of the hydraulic cylinder in accordance with the user input. In addition, the velocity of the hydraulic cylinder is measured and a position of the valve is determined in accordance with the desired velocity of the hydraulic cylinder and the measured velocity of the hydraulic cylinder. The method further includes determining a desired force to be applied to the valve in accordance with a difference between the desired and measured velocities of the hydraulic cylinder, and actuating the valve in accordance with the desired force to thereby inject the fluid into the chamber and move the hydraulic cylinder.

公开(公告)号：US20060162439A1

公开(公告)日：2006-07-27

申请号：US11369333

申请日：2006-03-07

Applicant: Hongliu Du

Inventor： Hongliu Du

IPC: G01M19/00

CPC classification number: F15B19/005

Abstract: A method and apparatus for determining the operating health of a hydraulic system are provided. The method may include the steps of determining a plurality of operating parameters of the hydraulic system during operation of the hydraulic system, determining an estimated working condition value of the hydraulic system, modifying the estimated working condition value as a function of the operating parameters, and determining the operating health of the hydraulic system as a function of the working condition value. In one method, the working condition value may be indicative of an effective bulk modulus value of an operating fluid within at least part of the hydraulic system.

公开(公告)号：US07043975B2

公开(公告)日：2006-05-16

申请号：US10628837

申请日：2003-07-28

Applicant: Hongliu Du

Inventor： Hongliu Du

IPC: G01M19/00

CPC classification number: F15B19/005

Abstract: A method and apparatus for determining the operating health of a hydraulic system are provided. The method may include the steps of determining a plurality of operating parameters of the hydraulic system during operation of the hydraulic system, determining an estimated working condition value of the hydraulic system, modifying the estimated working condition value as a function of the operating parameters, and determining the operating health of the hydraulic system as a function of the working condition value. In one method, the working condition value may be indicative of an effective bulk modulus value of an operating fluid within at least part of the hydraulic system.

Abstract translation: 提供了一种用于确定液压系统的运行健康的方法和装置。 该方法可以包括以下步骤：在液压系统的操作期间确定液压系统的多个操作参数，确定液压系统的估计工作状态值，修改作为运行参数的函数的估计工作状态值;以及 根据工作状况值确定液压系统的运行状况。 在一种方法中，工作条件值可以指示至少部分液压系统内的工作流体的有效体积模量值。

公开(公告)号：US20060095163A1

公开(公告)日：2006-05-04

申请号：US10975984

申请日：2004-10-29

Applicant: Jerry Wear ,  Hongliu Du ,  Greg Ferkol ,  Mark Vonderwell ,  Jeff Kuehn ,  Jason Brinkman

Inventor： Jerry Wear ,  Hongliu Du ,  Greg Ferkol ,  Mark Vonderwell ,  Jeff Kuehn ,  Jason Brinkman

IPC: G05D7/00

CPC classification number: G05D16/2073

Abstract: Consistent with an aspect of the disclosure, a method for controlling a hydraulic cylinder is provided. The hydraulic cylinder is provided with a chamber and configured to receive fluid from a valve. The method includes receiving a user input and determining a desired velocity of the hydraulic cylinder in accordance with the user input. In addition, the velocity of the hydraulic cylinder is measured and a position of the valve is determined in accordance with the desired velocity of the hydraulic cylinder and the measured velocity of the hydraulic cylinder. The method further includes determining a desired force to be applied to the valve in accordance with a difference between the desired and measured velocities of the hydraulic cylinder, and actuating the valve in accordance with the desired force to thereby inject the fluid into the chamber and move the hydraulic cylinder.

Abstract translation: 根据本公开的一个方面，提供了一种用于控制液压缸的方法。 液压缸设置有腔室并构造成从阀接收流体。 该方法包括根据用户输入接收用户输入并确定液压缸的期望速度。 此外，测量液压缸的速度，并且根据液压缸的期望速度和液压缸的测量速度来确定阀的位置。 该方法还包括根据液压缸的期望速度和测量速度之间的差异来确定要施加到阀的期望力，并根据期望的力致动阀，从而将流体注入到腔室中并且移动 液压缸。

公开(公告)号：US20140169987A1

公开(公告)日：2014-06-19

申请号：US13713610

申请日：2012-12-13

Applicant: Hongliu Du

Inventor： Hongliu Du

IPC: F04B49/12

CPC classification number: F04B49/12 ,  F04B1/146 ,  F04B1/2078 ,  F04B1/295 ,  F04B1/324

Abstract: Swashplate angle sensing arrangement for a variable displacement pump a nonrotating swashplate and a rotating pump barrel includes a dielectric sensor in a swashplate angle sensing arrangement. The arrangement includes a sensing probe coupled to the casing, a sensor target coupled to the swashplate, and a controller configured to direct an alternating current through the sensing probe to establish an impedance between the probe and the target, and to determine voltage across the probe. The controller is further adapted to determine the angle of the swashplate relative to the casing based on the determined voltage.

Abstract translation: 用于可变排量泵的斜盘角度检测装置，非旋转斜盘和旋转泵筒包括斜盘角度感测装置中的介电传感器。 该装置包括耦合到壳体的感测探头，耦合到斜盘的传感器靶，以及配置成引导交流电流通过感测探头以在探针和靶之间建立阻抗并且确定探针两端的电压的控制器 。 控制器还适于基于所确定的电压来确定斜盘相对于壳体的角度。

公开(公告)号：US08500587B2

公开(公告)日：2013-08-06

申请号：US12973572

申请日：2010-12-20

Applicant: Hongliu Du ,  Tony L. Marcott

Inventor： Hongliu Du ,  Tony L. Marcott

IPC: F16H47/04

CPC classification number: F16H47/04 ,  F16H41/28 ,  F16H61/448 ,  F16H2037/088 ,  F16H2200/2007 ,  Y10T29/49229 ,  Y10T74/19149 ,  Y10T74/19153

Abstract: A system for providing hydraulic power in a machine transmission includes a first hydraulic variator and a second hydraulic variator, each variator having a mechanical input to a hydraulic pump, and a hydraulic motor linked to the hydraulic pump via a hydraulic circuit, and a mechanical output from the hydraulic motor. In an embodiment, the first hydraulic circuit side of one variator is hydraulically connected to the first hydraulic side of the other variator, and the second hydraulic circuit sides are likewise linked together. A common input is geared to the inputs of the variators and a common output is geared to the outputs of the variators, tying the pump and motor of each variator to rotate at the same speed as the counterpart components of the other variator.

Abstract translation: 一种用于在机械变速器中提供液压动力的系统包括第一液压变速器和第二液压变速器，每个变速器具有到液压泵的机械输入，以及通过液压回路连接到液压泵的液压马达，以及机械输出 从液压马达。 在一个实施例中，一个变换器的第一液压回路侧液压连接到另一变换器的第一液压侧，并且第二液压回路侧同样连接在一起。 通用输入适用于变换器的输入，并且公共输出适用于变换器的输出，使每个变换器的泵和电机与其他变换器的对应部件以相同的速度旋转。