摘要
油液和气体是油气悬架重要的工作介质,也是重要的弹性元件,在反复压缩和伸张过程中产生较多的热量。油液流经阻尼孔和单向阀产生阻尼,并且气体、油液、缸体之间直接接触,在三者之间以及与空气之间存在热量交换过程,使得油气悬架的热力学过程比较复杂。针对油气悬架工作过程中的热力学状态进行深入分析,类比基尔霍夫定律,建立油气悬架工作过程中各介质热量产生、传递过程的数学模型,并通过特定的试验装置对油气悬架工作过程中油液和气体的热量产生及传递进行研究,对比分析验证热力学数学模型的准确性。结果表明所建立的数学模型较好的描述了油气悬架内部油液和气体的热力学状态和传热过程,为此类设计研究提供参考。
Oil and gas are the important elastic element parts and working medium in hydro pneumatic suspension. It will produce more heat in the process of repeated compression and stretching. Oil flows through the orifice and check valve damping,and directly contact between the gas,oil and cylinder. There are heat exchanges between the three and with the air.Thermodynamic process and heat transfer process will be more complicated because of the contact between oil and gas.Thermodynamic state in the working process of hydro pneumatic suspension was studied deeply,mathematical model was established like Kirchhoff＇s law about thermodynamic process and heat transfer process,and researched those by testing.Mathematical mode was checked with testing apparatus effectively. The results show that the mathematical mode describes the internal state well.
出处
《机械设计与制造》
北大核心
2016年第5期99-102,共4页
Machinery Design & Manufacture
基金
河南省科技攻关项目(142102210123)
郑州市科技局攻关项目(14A520054)
关键词
油气悬架
热力学
基尔霍夫定律
数学模型
试验
Hydro Pneumatic Suspension
Thermodynamic
Kirchhoff＇s Law
Mathematical Model
Test
