一种活塞环径向压力分布函数的研究

Research on a kind of distribution function for the piston ring radial pressure

基于现代活塞环的设计方法,讨论了一种非仅由余弦函数构成的活塞环径向压力分布函数表达式,分析了该表达式的特性及其优点,并与Arnold径向压力分布函数表达式进行了比较.结果表明,后者仅为前者的一个特例,前者形式上更为简洁普遍,其系数仅是压比和平均压力的函数,更适合于活塞环的设计与计算.

An expression of the radial pressure distribution on the piston ring with non-cosine function was discussed based on the modern designing idea of piston ring, its characteristics were analysed, and the function was compared with the Arnold function expression of the radial pressure distribution. The compare proves the latter is just a special case of the former, which is simpler and more general, and the coefficient in which is only the function of P （ π）/Pm and Pm. The distribution function suggested is propitious to designing and calculation of piston rings.