公开(公告)号：US09925983B2

公开(公告)日：2018-03-27

申请号：US15213077

申请日：2016-07-18

Applicant: Caterpillar Inc.

Inventor： Michael D. Mitchell ,  Sameer S. Marathe ,  Mark A. Robinson ,  Wesley T. Payne

IPC: B60W10/04 ,  B60W10/18 ,  B60W30/18 ,  B62D5/065 ,  B62D6/00 ,  B60W10/20 ,  B60W50/00

CPC classification number: B60W30/18145 ,  B60W10/04 ,  B60W10/18 ,  B60W10/20 ,  B60W50/0098 ,  B60W2300/126 ,  B60W2520/22 ,  B62D5/065 ,  B62D6/002

Abstract: A system and method for limiting articulation between a front frame and a rear frame of an articulated machine are disclosed. The system and method receive steering signals and determine impending contact between the front frame and the rear frame based on the received steering signals. Additionally, an amount by which to reduce torque at a hitch coupled between the front and rear frames so as to limit an articulation characteristic of the front frame relative to the rear frame to a predetermined value is determined, responsive to determination of impending contact. Prior to contact, rimpull of the articulated machine is reduced based on the determined amount of torque.

公开(公告)号：US10920396B1

公开(公告)日：2021-02-16

申请号：US16527586

申请日：2019-07-31

Applicant: Caterpillar Inc.

Inventor： Travis N. Richards ,  Ernest E. Stoops ,  Michael L. Repscher ,  Stive Ramalho ,  Wesley T. Payne

IPC: E02F9/22 ,  E02F3/84

Abstract: A hydraulic system for a motor grader is disclosed. The hydraulic system may include a first hydraulic subsystem and a second hydraulic subsystem. A pump may be configured to provide pressurized fluid to the first and second hydraulic subsystems. The hydraulic system may further include a control valve located upstream of the first and second hydraulic subsystems. The control valve may be configured to vary a standby pressure of pressurized fluid for use by the first and second hydraulic subsystems.

公开(公告)号：US20140238007A1

公开(公告)日：2014-08-28

申请号：US13778967

申请日：2013-02-27

Applicant: CATERPILLAR INC.

Inventor： Wesley T. Payne

IPC: F15B1/02

CPC classification number: F15B1/021 ,  E02F9/2207 ,  E02F9/2221 ,  F15B1/027

Abstract: A hydraulic system is provided including a hydraulic actuator having a first chamber. A pump is configured to supply pressurized fluid to the hydraulic actuator. A balancing valve is configured to be operable in a balancing mode to equalize pressure in an accumulator and the first chamber of the hydraulic actuator. An activation valve is configured to be operable in a ride control mode to place the first chamber of the hydraulic actuator in communication with the accumulator. A flow control valve is configured to block flow from the pump when a flow rate from the pump exceeds a predetermined amount.

Abstract translation: 提供一种液压系统，其包括具有第一室的液压致动器。 泵配置成向液压致动器供应加压流体。 平衡阀构造成在平衡模式下可操作以平衡蓄能器和液压致动器的第一室中的压力。 活动阀构造成可以在行驶控制模式下操作以将液压致动器的第一腔室与蓄能器连通。 流量控制阀构造成当来自泵的流量超过预定量时阻止来自泵的流动。