Simulation & analysis of throttle valve in LUDV multway valve
ZHANG Shengfeng1,XV Bing1,LIU Wei1，NIU Yuesheng2
(1.The State Key Lab of Fluid Power Transmission and Control,Zhejiang University,Hangzhou 310027，China;
2.Hebei Tianze Heavy Machinery Co., Ltd., Handan 050001, China)
Abstract: The throttle valve is the important flow control component of LUDV hydraulic systems. Its performance, good or bad, directly effect the energy saving and stability of LUDV system.Aimming at this problem, the structure and function of throttle valve in LUDV multiway valve were analyzed,  throttle valve simulation model in AMESim was established,and  through changing the throttle valve’s parameters such as spring preload force etc.,  the simulation was done.The analysis results of simulation indicate that, the response of LS pressure has some connections with the setting flow of the throttle; flow sets too big, LS pressure responds slowly, not necessarily LS pressure establishes enough; flow sets too small, LS pressure responds fast and causes the system’s pressure shocking, and easily form LS pressure buildup.
Key words: load independent  flow distribution(LUDV)；throttle valve；advanced modeling environment for simulation of engineering systems(AMESim)；simulation