摘要
控制阀决定了全液压制动系统的充液压力。从物理运动及结构两方面介绍全液压制动控制阀的工作原理,分析影响充液压力上限的因素。建立控制阀三维数学模型,应用Fluent软件对不同进口速度u、阀芯套筒锥角β以及钢球直径D的控制阀进行模拟研究,对比分析其内部流场的变化。搭建全液压制动系统试验台进行充液压力上限测试试验,验证理论分析及仿真结果的有效性,得出各参数对充液压力上限的影响规律。结果表明,控制阀的进口速度、阀芯套筒锥角与充液压力上限呈正相关,钢球直径与充液压力上限呈负相关。
Control valve determines the charging pressure of a fully hydraulic braking system.The principles of control valve were introduced in the paper from two respects of physical movement and structure.And the factors affecting the upper limit of charging pressure were analyzed.A 3-D mathematic model of the control valve was developed to simulate the internal flow field with different inlet velocities u,sleeve cone anglesβand ball diameters D using Fluent software.The test platform of fully hydraulic braking system was built and the experiments about the upper limit of charging pressure were conducted,in order to validate the effectiveness of the theoretic analysis and simulation results.The effects of inlet velocity,sleeve cone angle and ball diameter on its upper limit were investigated.Results showed that the charging pressure had positive correlation with the inlet velocity and sleeve cone angle while it had negative correlation with the ball diameter.
作者
宋慧慧
张振东
石楠楠
SONG Huihui;ZHANG Zhendong;SHI Nannan(School of Mechanical Engineering,University of Shanghai forScience and Technology,Shanghai 200093,China)
出处
《能源研究与信息》
2018年第4期237-244,共8页
Energy Research and Information
关键词
全液压制动系统
控制阀
仿真
fully hydraulic braking system
control valve
fluent simulation
