公开(公告)号：US20170058876A1

公开(公告)日：2017-03-02

申请号：US14839128

申请日：2015-08-28

Applicant: Caterpillar Inc.

Inventor： Kevin J. Graf ,  Kaimei Sun ,  Hongliu Du

IPC: F04B1/18 ,  F04B49/00 ,  F04B1/32

CPC classification number: F04B1/188 ,  F04B1/2021 ,  F04B1/2042 ,  F04B1/205 ,  F04B1/2057 ,  F04B1/303 ,  F04B1/32 ,  F04B1/324

Abstract: A port plate for a swashplate type axial piston pump is described herein. The port plate includes an inlet port, a discharge port, and a first metering notch in fluidic communication via a first passage with a metering notch area adjustment valve configured to adjust the effective area of the metering notch. The first metering notch is disposed at a leading edge of one of the inlet port or the discharge port.

Abstract translation: 本文描述了用于斜盘式轴向柱塞泵的端口板。 端口板包括入口端口，排出口和经由第一通道流体连通的第一计量凹口，配置有调节计量凹口的有效面积的计量切口区域调节阀。 第一计量槽口设置在入口或排出口之一的前缘。

公开(公告)号：US10227964B2

公开(公告)日：2019-03-12

申请号：US14839128

申请日：2015-08-28

Applicant: Caterpillar Inc.

Inventor： Kevin J. Graf ,  Kaimei Sun ,  Hongliu Du

IPC: F04B1/20 ,  F04B1/30 ,  F04B1/18 ,  F04B1/32

Abstract: A port plate for a swashplate type axial piston pump is described herein. The port plate includes an inlet port, a discharge port, and a first metering notch in fluidic communication via a first passage with a metering notch area adjustment valve configured to adjust the effective area of the metering notch. The first metering notch is disposed at a leading edge of one of the inlet port or the discharge port.