Research on variable pressure characteristics of step variable hydraulic hybrid system based on cartridge value group

Abstract

Compared with the traditional hydraulic hybrid system, step variable hydraulic hybrid power system has the advantages of low cost, fast response and pollution resistance. However, the existing variable elements are heavy, and the control valve group has the disadvantages of insufficient through-flow capacity, large flow resistance, large leakage and reversing impact. In this study, the hydraulic components integrated by the cartridge valve group which can replace the traditional three-position four-way valve group are applied to the hydraulic hybrid power system. The AMESim simulation models of directional cartridge valve and the step variable hydraulic hybrid power system are established in this study. Through simulation analysis, it is verified that the cartridge valve integrated element can replace the traditional reversing valve to solve the defects of cumbersome components and insufficient through-flow capacity. Some important parameters of the system components are simulated and analysed. The simulation results can be used to improve the design efficiency and ensure the design quality.

Keywords

• proportional control
• hydraulic systems
• valves
• hydraulic control equipment
• flow control
• system components
• variable pressure characteristics
• step variable hydraulic hybrid system
• cartridge value group
• traditional hydraulic hybrid system
• step variable hydraulic hybrid power system
• fast response
• pollution resistance
• existing variable elements
• control valve group
• through-flow capacity
• hydraulic components
• cartridge valve group
• directional cartridge valve
• cartridge valve integrated element
• traditional reversing valve