公开(公告)号：US20220145589A1

公开(公告)日：2022-05-12

申请号：US17093120

申请日：2020-11-09

Applicant: Caterpillar Inc.

Inventor： Patrick W. Sullivan, JR. ,  Ryan R. Stoffel ,  Beau D. Kuipers ,  Andrew N. Schifferer ,  Royce E. Leaders ,  Fuaad Sayeed

IPC: E02F9/22 ,  E02F3/28 ,  E02F3/43 ,  E02F3/42 ,  F15B13/02

Abstract: A hydraulic system for a machine includes an implement pump, a valve, and an implement valve subsystem. The implement pump includes a load sensing control, and the valve controls the flow of hydraulic fluid to the implement pump. The implement valve subsystem includes one or more implement control subsystems to control movement of an implement. The valve is an electrohydraulic proportional relief valve and includes a solenoid configured to adjust the pressure of hydraulic fluid delivered to the implement pump proportionally to a current delivered through the solenoid.

公开(公告)号：US20160152261A1

公开(公告)日：2016-06-02

申请号：US15016277

申请日：2016-02-05

Applicant: Caterpillar Inc.

Inventor： Beau D. Kuipers ,  Sudheer Holenarasipura ,  Patrick W. Sullivan, JR.

IPC: B62D5/14

CPC classification number: B62D5/06 ,  B62D5/065 ,  B62D5/07 ,  E02F9/0841 ,  E02F9/225 ,  E02F9/2292 ,  E02F9/2296

Abstract: A hydraulic system with margin based flow supplementation is provided. The hydraulic system includes a steering pump, an implement pump and a flow sharing device. The steering pump is associated with a steering circuit. The implement pump is associated with an implement circuit. The flow sharing device is disposed between the steering circuit and the implement circuit and is configured to operate in one of a first mode and a second mode. Further, the flow sharing device allows hydraulic fluid to flow from the implement circuit to the steering circuit in the first mode, when a margin pressure of the steering circuit is below a threshold value, and the flow sharing device stops the hydraulic fluid to flow from the implement circuit to the steering circuit in the second mode, when the margin pressure of the steering circuit is equal to or above the threshold value.

Abstract translation: 提供了一种具有基于边缘的流量补充的液压系统。 液压系统包括转向泵，工具泵和分流装置。 转向泵与转向回路相关联。 工具泵与工具电路相关联。 流量共享装置设置在转向电路和实施电路之间，并且被配置为在第一模式和第二模式之一中操作。 此外，当转向回路的余量压力低于阈值时，流量共享装置允许液压流体在第一模式中从工具回路流向转向回路，并且流量共享装置停止液压流体从 当转向电路的余量压力等于或高于阈值时，在第二模式中转向电路的实现电路。