Overview & Comment

Analysis and Prospect on the Development of Hydraulic Technology in China .........HU Yan(1)

Design & Research

Research on Hydraulic Drive System Matching for Engineering Machinery Cooling Fan ............ZHENG Jian-feng,et al(3)

Design and Experimental Study of Solenoid Directional Control Valve with 2D Technology ............ZHENG Fang,et al(6)

Design and Research on Spindle Hydraulic System of Blades Fixed Rolling Riveting Machine for Torque Converter .........PAN Wen-hong(9)

Design of Ultra-high Pressure Hydraulic System...........................................LI Yang,et al(12)

Design of Test Bench for Heavy-duty Hydraulic Cylinder ...........................YU An-cai,et al(15)

Design of Dual Clutch Vehicle Hydraulic Control Module Testing System Based on LabVIEW ..........LIU Ming(18)

Intelligent Control System Design of Electric Hydraulic Cylinder ...........WANG Jian-ren,et al(22)

Analysis of Nonlinear Factors Affecting Closed Circuit Hydraulic Servo System Low Frequency Phase .........TANG Li,et al(26)

System & Application

Research on Core Hydraulic System of Double Wheel Milling...........................LI Qing-yin(30)

The Development of a Comprehensive Test Bed for Aviation Lubricating Oil Pump ..........DING Long,et al(33)

Research on the Methods of Sealing Property Control for Casing Premium Connection .........BAI He,et al(36)

Design and Implementation of a High Pressure and Large Flow Rate Hydraulic Components Maintenance Test Bench...........WANG Yan-hua,et al(39)

Two-degree-of-freedom Stamping System with Single-chip Microcomputer ............LI Yan, WANG Teng-jin(42)

Analysis and Application on Four Cylinders Fuzzy PID Synchronization Control with Variable and Heavy Load ........LIU Ze-yi,et al(45)

Research on Closed Circuit Hydraulic System Control of Large Tonnage Wheel Crane Under Over Load Condition........GUAN Xiao-xing,et al(48)

Application of Multi-sensor Information Fusion for Hydraulic System Fault Diagnosis .........REN Feng-juan(52)

Design and Development of Compact Wind Power Braking Hydraulic System ..........CHEN Jun-long(55)

Design of a Movable Membrane Osmotic Humidifying Device with Large Flow Rate .........LU Xin, YANG Jun-qing(58)

Design of the Measure and Control Box for a Portable Mobile Hydraulic Power ............ZHAO Fang,et al(70)

Operation & Maintenance

Analysis and Fault Diagnosis on the Flow Impact Response of a Certain Aircraft Hydraulic Pipeline ...........PENG Fei-liang,et al(62)

Study on Low Temperature Oil Leakage Fault of An Aero Hydraulic Pump ............. CHEN Jing-yue,et al(73)

The Common Fault Analysis and Maintenance of KD-A4VS Hydraulic Piston Pump ...........ZHONG Long-hui(76)

Analysis and Treatment on Fuelling Machine Snout Clamp Leakage Rate Exceeding the Standard .........MIAO Run-ze, LI Ping-yuan(80)

Monitoring and Maintenance of Water Content in Hydraulic System .........................ZHU Ke(84)

New Product, New Technology & New Process

The Swivel Joint Capable of Bearing Bidirectional Force ..........................ZHANG Zhong-bo(87)oNormal"> The Buffer Cylinder with Quick Response............................... YANG Min-zheng, LI Qian-yu(95)