及在设计中的应用.PDFVIP

发动机气缸孔与活塞组件的摩擦学研究以 及在设计中的应用 谢琰，康黎云，曾庆强，卿辉斌，蓝军，司庆九，郑建军，徐熹，杨怀刚，谭杰 （长安汽车动力总成CAE 工程所，重庆渝北区双凤桥空港大道589 号，401120 ） [摘要] ：针对活塞组件的设计，活塞组件与缸孔的摩擦学已经成为活塞组件设计必须考虑的 因素之一，本文通过AVL PistonRings 建立了发动机活塞组件的摩擦副动力学模型，在考 虑活塞径向刚度、活塞和气缸孔的热态型面、活塞环型线等条件下，分析了活塞销孔偏置值、 活塞环张力对活塞组件摩擦损失以及磨损的影响。结果表明，活塞销孔偏置对活塞组件摩擦 副动力学影响较大，活塞环张力主要影响气环和油环的摩擦损失，优化活塞销孔偏置和活塞 环张力是发动机降低摩擦的重要途径。 关键词：汽缸孔；活塞组件；摩擦学；研究；设计 主要软件：AVL EXCITE PistonRings The tribology research on Cylinder bore and Piston components and the Application in the product Design Xie Yan, Kang Liyun, Zeng Qingqiang, Qing Huibin, Lan Jun, Si Qingjiu, Zheng Jianjun， Xu Xi, Yang Huaigang, Tan Jie Powertrain CAE Department No.589 Kong Gang Da Dao,Shuang Feng Qiao,Yubei District Chongqing, 401120 [Abstract] The study of friction of piston group is a important tribopairs for the design of piston group. The tribology research on Cylinder bore and Piston components is becoming a very important factor that must be taken into consideration in piston components design process. In this paper, the tribo-dynamics model of the piston components was set up based on AVL piston ring. The effect of pin offset and ring pretension on the friction loss and wear of piston components was analyzed on the basis of considering the radial stiffness, thermal profile of piston and cylinder bore, and the piston ring profile. The results showed that piston pin offset has large effect on the tribo-dynamics of piston components. In addition, the friction loss of gas ring and oil ring was mainly influenced by the ring pretension. Furthermore, this paper shows that the optimization of piston pin offset and ring pretension is one of the important ways of decreasing the engine friction. Keywords: cylinder bore; piston group; tribology; study; design Software: AVL EXCITE PistonRings 1. 前言 活塞环组与汽缸孔是内燃机中最重要的摩擦副之一，随着发动机增