公开(公告)号：US09829014B2

公开(公告)日：2017-11-28

申请号：US14696869

申请日：2015-04-27

Applicant: Caterpillar Inc.

Inventor： Andrew J. Kleitsch ,  Pengfei Ma ,  Jason L. Brinkman ,  Mikhail Sorokin

IPC: F15B11/16 ,  F15B11/00 ,  E02F9/22

CPC classification number: F15B11/165 ,  E02F9/2228 ,  F15B11/006 ,  F15B11/163 ,  F15B2211/20553 ,  F15B2211/20576 ,  F15B2211/30535 ,  F15B2211/30555 ,  F15B2211/30575 ,  F15B2211/61 ,  F15B2211/6313 ,  F15B2211/6316 ,  F15B2211/6346 ,  F15B2211/6355 ,  F15B2211/6652 ,  F15B2211/6654 ,  F15B2211/7142

Abstract: An independent metering valve circuit includes an actuator, a set of independent metering valves, an independent metering valve pre-compensator, an inverse resolver, and a signal conditioning element. The set of independent metering valves are fluidly coupled to the actuator and configured to independently control a flow of a hydraulic fluid to the actuator. The independent metering valve pre-compensator is configured to control the flow of the hydraulic fluid to the set of independent metering valves. The inverse resolver is configured to receive a first pressure signal from the independent metering valve circuit and a second pressure signal from a load-sense hydraulic system and output a third pressure signal. The signal conditioning element is configured to receive the third pressure signal and output a forth pressure signal configured to control a pump fluidly coupled to the load-sense hydraulic system and the independent metering valve circuit.

公开(公告)号：US09869359B2

公开(公告)日：2018-01-16

申请号：US14473124

申请日：2014-08-29

Applicant: Caterpillar Inc.

Inventor： Carl McIlheran ,  Andrew J. Kleitsch ,  John C. Vacca ,  Daniel Mather ,  Michael D. Hudson ,  Derek W. Holmes

IPC: F16D65/78 ,  B60T5/00 ,  F15B21/04

CPC classification number: F16D65/78 ,  B60T5/00 ,  F15B21/042 ,  F15B2211/50518 ,  F15B2211/5156 ,  F15B2211/611 ,  F15B2211/62 ,  F16D2065/783

Abstract: A relief valve in a hydraulic system in a machine selectively sends pressurized oil to both a brake cooling apparatus and a cylinder used to hoist a load. A relief valve lowers pressure spikes in a brake cooling line by dumping fluid in a brake cooling line to tank responsive to a pressure spikes at the head end of the cylinder during hoisting or other transitions in the hydraulic system. Reducing the pressure spikes in the brake cooling line improves reliability of the brake cooling apparatus by protecting seals from undue stresses.

公开(公告)号：US20160312807A1

公开(公告)日：2016-10-27

申请号：US14696869

申请日：2015-04-27

Applicant: Caterpillar Inc.

Inventor： Andrew J. Kleitsch ,  Pengfei Ma ,  Jason L. Brinkman ,  Mikhail Sorokin

IPC: F15B11/028

CPC classification number: F15B11/165 ,  E02F9/2228 ,  F15B11/006 ,  F15B11/163 ,  F15B2211/20553 ,  F15B2211/20576 ,  F15B2211/30535 ,  F15B2211/30555 ,  F15B2211/30575 ,  F15B2211/61 ,  F15B2211/6313 ,  F15B2211/6316 ,  F15B2211/6346 ,  F15B2211/6355 ,  F15B2211/6652 ,  F15B2211/6654 ,  F15B2211/7142

Abstract: An independent metering valve circuit includes an actuator, a set of independent metering valves, an independent metering valve pre-compensator, an inverse resolver, and a signal conditioning element. The set of independent metering valves are fluidly coupled to the actuator and configured to independently control a flow of a hydraulic fluid to the actuator. The independent metering valve pre-compensator is configured to control the flow of the hydraulic fluid to the set of independent metering valves. The inverse resolver is configured to receive a first pressure signal from the independent metering valve circuit and a second pressure signal from a load-sense hydraulic system and output a third pressure signal. The signal conditioning element is configured to receive the third pressure signal and output a forth pressure signal configured to control a pump fluidly coupled to the load-sense hydraulic system and the independent metering valve circuit.

Abstract translation: 独立的计量阀电路包括致动器，一组独立计量阀，独立计量阀预补偿器，逆解算器和信号调节元件。 该组独立计量阀流体地联接到致动器并且构造成独立地控制液压流体到致动器的流动。 独立的计量阀预补偿器构造成控制液压流体流向该组独立的计量阀。 逆解算器被配置为接收来自独立计量阀电路的第一压力信号和来自负载感测液压系统的第二压力信号并输出​​第三压力信号。 信号调节元件构造成接收第三压力信号并输出​​配置成控制流体耦合到负载感测液压系统和独立计量阀回路的泵的第四压力信号。

公开(公告)号：US10001147B2

公开(公告)日：2018-06-19

申请号：US14713737

申请日：2015-05-15

Applicant: Caterpillar Inc.

Inventor： Andrew J. Kleitsch

IPC: F15B11/16

CPC classification number: F15B11/162 ,  F15B2211/30555 ,  F15B2211/30575 ,  F15B2211/3116 ,  F15B2211/50563 ,  F15B2211/528 ,  F15B2211/605 ,  F15B2211/6313 ,  F15B2211/6346 ,  F15B2211/7142 ,  F15B2211/781

Abstract: An IMV circuit includes a set of IMVs, an IMV resolver, an on/off bypass valve, and a bypass valve. The set of IMVs is fluidly coupled to an actuator to independently control a flow of a hydraulic fluid to the actuator. The IMV resolver is configured to receive a first pressure signal and a second pressure signal and output a third pressure signal. The on/off bypass valve is configured to control the flow of the hydraulic fluid to the set of IMVs in response to the third pressure signal. The bypass valve is fluidly coupled to a hydraulic fluid supply conduit downstream of an IMV circuit supply. The bypass valve is fluidly coupled to the IMV resolver and is configured to reduce the flow of hydraulic fluid through the hydraulic fluid supply conduit in response to an increase in pressure in the third pressure signal.

公开(公告)号：US20160061280A1

公开(公告)日：2016-03-03

申请号：US14473124

申请日：2014-08-29

Applicant: Caterpillar Inc.

Inventor： Carl McIlheran ,  Andrew J. Kleitsch ,  John C. Vacca ,  Daniel Mather ,  Michael D. Hudson ,  Derek W. Holmes

IPC: F16D65/78

CPC classification number: F16D65/78 ,  B60T5/00 ,  F15B21/042 ,  F15B2211/50518 ,  F15B2211/5156 ,  F15B2211/611 ,  F15B2211/62 ,  F16D2065/783

Abstract: A relief valve in a hydraulic system in a machine selectively sends pressurized oil to both a brake cooling apparatus and a cylinder used to hoist a load. A relief valve lowers pressure spikes in a brake cooling line by dumping fluid in a brake cooling line to tank responsive to a pressure spikes at the head end of the cylinder during hoisting or other transitions in the hydraulic system. Reducing the pressure spikes in the brake cooling line improves reliability of the brake cooling apparatus by protecting seals from undue stresses.

Abstract translation: 机器中的液压系统中的安全阀选择性地将加压油输送到制动冷却装置和用于提升负载的气缸。 安全阀通过在液压系统的提升或其它过渡期间，响应于缸体头端处的压力尖峰而将制冷剂冷却管路中的流体倾倒在制动冷却管线中，降低了压力尖峰。 减少制动冷却线中的压力尖峰通过保护密封件免受不适当的应力而提高制动器冷却装置的可靠性。

公开(公告)号：US20170108015A1

公开(公告)日：2017-04-20

申请号：US14918146

申请日：2015-10-20

Applicant: Caterpillar Inc.

Inventor： Andrew J. Kleitsch

IPC: F15B13/04 ,  F15B11/16 ,  F15B13/044

CPC classification number: F15B11/163 ,  E02F9/2228 ,  E02F9/2296 ,  F15B11/006 ,  F15B2211/20546 ,  F15B2211/30535 ,  F15B2211/30575 ,  F15B2211/50536 ,  F15B2211/528 ,  F15B2211/6306 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/6316 ,  F15B2211/6346

Abstract: A hydraulic system includes a source of pressurized fluid, a plurality of fluid actuators, each fluid actuator associated with an implement control system for hydraulically controlling the fluid actuator, and a load sense signal conditioning passageway fluidly connecting each of the implement control systems and configured to facilitate flow sharing between each of the implement control systems. Each of the fluid actuators includes a first chamber and a second chamber, and each of the implement control systems includes: a head-end IM supply valve configured to selectively fluidly connect the source with the first chamber; a rod-end IM supply valve configured to selectively fluidly connect the source with the second chamber; and a load compensating valve configured to control a pressure of a fluid directed between the source and the head-end IM supply and rod-end IM supply valves in response to a load acting on the fluid actuator.

公开(公告)号：US20160040736A1

公开(公告)日：2016-02-11

申请号：US14457024

申请日：2014-08-11

Applicant: Caterpillar Inc.

Inventor： Andrew J. Kleitsch

IPC: F16D65/853 ,  F16D55/24

CPC classification number: F16D65/853 ,  F16D55/24 ,  F16D55/40 ,  F16D65/186 ,  F16D2065/783

Abstract: A wheel housing for a vehicle, such as a truck. The wheel housing includes a rotatable hub and stationary axle housing disposed within the hub. A wet brake assembly is disposed between the axle housing and the hub. The wet brake assembly includes a disc stack, which includes a plurality of friction plates that are coupled for rotation with the hub and that are separated from each other by a plurality of separator plates that remain stationary with the axle housing. The disc stack is cooled by coolant or oil that flows through a closed circuit. During a braking event, pressure spikes in the coolant circuit are alleviated by the placement of a compressible accumulator in the outlet passageway of the coolant circuit.

Abstract translation: 用于车辆的车轮壳体，例如卡车。 轮壳体包括设置在轮毂内的可旋转轮毂和固定轴壳体。 湿式制动组件设置在轴壳体和轮毂之间。 湿式制动组件包括盘叠，其包括多个摩擦板，其被联接以与轮毂一起旋转，并且通过多个与轴壳保持静止的分隔板彼此分离。 盘片由流过闭路的冷却液或油冷却。 在制动事件期间，通过将可压缩蓄能器放置在冷却剂回路的出口通道中来减轻冷却剂回路中的压力尖峰。