Review of cylinder block/valve plate interface in axial piston pumps: Theoretical models,experimental investigations, and optimal design

Jiangao ZHAO; Yongling FU; Jiming MA; Jian FU; Qun CHAO; Yan WANG

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Review of cylinder block/valve plate interface in axial piston pumps: Theoretical models,experimental investigations, and optimal design

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Axial piston pumps have been widely used in aircraft hydraulic systems to supply the system with pressurized fluid. The continuous improvement of the aircraft performance has put forward the demand on aviation piston pumps for high power density, safety, and reliability. The lubricating interfaces in axial piston machines are the key design issue that greatly determines the pump performance and service life. The cylinder block/valve plate interface is one of these critical lubricating interfaces and has received considerable attention from many researchers in the last half century. This study aims to review the state-of-the-art literature on the cylinder block/valve plate interface comprehensively and systematically. First, we introduce various theoretical models developed to investigate the lubrication behaviors of the interface and compare them in terms of their assumptions and limitations. Second, the experimental studies on the cylinder block/valve plate interface are presented comprehensively, where the involved test rigs are divided into three types according to their fidelity levels and measurement functionality. Third, we summarize some typical approaches of structure optimization, surface shaping, and surface strengthening, which help improve the load-carrying and anti-wear capacities of the interface under severe operating conditions. Finally, the challenges and future trends of the cylinder block/valve plate interface research are discussed briefly.

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《中国航空学报：英文版》 |2021年第1期|111-134|共24页
作者
Jiangao ZHAO; Yongling FU; Jiming MA; Jian FU; Qun CHAO; Yan WANG;
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作者单位

School of Mechanical Engineering and Automation;

Beihang University;

Beijing 100191;

China;

Laboratory of Aerospace Servo Actuation and Transmission;

Beihang University;

Beijing 100191;

China;

State Key Laboratory of Mechanical System and Vibration;

Shanghai Jiao Tong University;

Shanghai 200240;

China;

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原文格式 PDF
正文语种 chi
中图分类液压设备;
关键词
Axial piston pump; Cylinder block/valve plate interface; Theoretical model; Test rig; Optimization methods;

Review of cylinder block/valve plate interface in axial piston pumps: Theoretical models,experimental investigations, and optimal design

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