On the Piston Secondary Motion of IC Engine Considering the Lubricating Oil Transport

doi:10.3901/JME.2021.06.164

Abstract

Abstract: The piston secondary motion of internal combustion (IC) engine has direct influence on the clap of piston against the cylinder, the generated noise and the lubrication, friction and wear of piston skirt-cylinder liner frictional conjunction. In current analysis of the piston secondary motion for IC engine, the piston skirt-cylinder liner frictional pair is usually supposed to be lubricated sufficiently in all strokes of an operating cycle of engine. In fact, the status of sufficient lubrication of this frictional pair may not be guaranteed by the actual quantity of lubricating oil at entrance during the piston upstroke. In this paper, a four-stroke IC engine is taken as the studying object, the performance of the piston secondary motion is analyzed based on the model of piston motion, the model of fluid lubrication, the model of asperity contact and the model of lubricating oil flow. The results show that compared with the current analysis in which the sufficient lubrication in all strokes is assumed, the performance of the piston secondary motion(displacement and velocity at top and bottom of piston skirt) is changed obviously when the lubrication status of the frictional pair during the piston upstroke is determined by the actual transport of lubricating oil.

Key words: internal combustion engine, piston, secondary motion, lubricating oil transport

CLC Number:

TK402

SUN Jun, ZHANG Xiao, ZHU Jianxiong, GAO Yaming, LI Biao, ZHU Shaoyu, LI Yue, REN Yanping, ZHU Guixiang. On the Piston Secondary Motion of IC Engine Considering the Lubricating Oil Transport[J]. Journal of Mechanical Engineering, 2021, 57(6): 164-170.

References

[1] DURSUNKAYA Z,KERIBAR R,GANAPATHY V. A model of PISTON secondary motion and elastohydrodynamic skirt lubrication[J]. ASME Journal of Tribology,1994,116(4):777-785.
[2] SHAH P,MOURELATOS Z P,PATEL P. Piston secondary dynamics considering elastohydrodynamic lubrication[R]. SAE,2007-01-1251,2007.
[3] 杨俊伟,于旭东,王成焘,等. 考虑活塞热变形的活塞裙部润滑计算分析[J]. 内燃机学报,2002,20(4):365-368.YANG Junwei,YU Xudong,WANG Chengtao,et al. Calculation and analysis of piston skirt lubrication considering the thermal deformation of piston[J]. Transactions of CSICE,2002,20(4):365-368.
[4] 阮登芳,许金霞,高鑫. 活塞弹性变形对活塞二阶运动及裙部润滑特性的影响[J]. 农业工程学报,2015,31(4):63-68.RUAN Dengfang,XU Jinxia,GAO Xin. Effects of piston elastic deformation on piston secondary motion and skirt lubrication characteristics[J]. Transactions of the Chinese Society of Agricultural Engineering,2015,31(4):63-68.
[5] 阮登芳,高鑫,马克. 缸套弹性变形对活塞二阶运动和裙部润滑特性的影响[J]. 汽车工程,2015,37(5):571-575. RUAN Dengfang,GAO Xin,MA Ke. Effects of liner elastic deformation on piston 2nd-order motion and piston skirt lubrication characteristics[J]. Automotive Engineering,2015,37(5):571-575.
[6] MANSOURI S H,WONG V W. Effects of piston design parameters on piston secondary motion and skirt-liner friction[J]. Proc. IMechE Part J:Journal of Engineering Tribology,2005,219(6):435-449.
[7] GUNELSU O,AKALIN O. The Effects of piston skirt profiles on secondary motion and friction[J]. ASME Journal of Engineering for Gas Turbines and Power,2014,136(6):062503-1-8.[8] 王政,唐建,于旭东,等. 活塞裙部型线对活塞系统二阶运动和摩擦功率的影响[J]. 内燃机学报,1999,17(4):383-387.WANG Zheng,TANG Jian,YU Xudong,et al. The influence of piston skirt profile on the secondary motion and friction power loss of piston[J]. Transactions of CSICE,1999,17(4):383-387.
[9] LIU K,XIU Y B,GUI C L. A comprehensive study of the friction and dynamic motion of the piston assembly[J]. Proc IMechE Part J:Journal of Engineering Tribology,1998,212(3):221-226.
[10] MALAGI R R,KURBET S N,KRISHNAKμMAR R. A comprehensive model to study the dynamic motion of piston and friction and lubrication in IC engine[R]. SAE,2008-28-0061,2008.
[11] ZHANG Z,XIE Y,ZHANG X,et al. Analysis of piston secondary motion considering the variation in the system inertia[J]. Proc. IMechE Part D:Journal of Automobile Engineering,2009,223:549-563.
[12] 张执南,张效翔,李响,等. 活塞二阶运动及活塞裙部摩擦的瞬态分析[J]. 摩擦学学报,2010,30(2):184-189. ZHANG Zhinan,ZHANG Xiaoxiang,LI Xiang,et al. Transient analysis of piston secondary motion and piston skirt friction[J]. Tribology,2010,30(2):184-189.
[13] MURAKAMI H,NAKANISHI N,ONO N,et al. New three-dimensional piston secondary motion analysis method coupling structure analysis and multi body dynamics analysis[J]. SAE International Journal of Engines,2011,5(1):42-50.
[14] MENG X,FANG C,XIE Y. Transient tribodynamic model of piston skirt-liner systems with variable speed effects[J]. Tribology International,2016,94:640-651.
[15] ZHAO B,DAI X D,ZHANG Z N,et al. A new numerical method for piston dynamics and lubrication analysis[J]. Tribology International,2016,94:395-408.
[16] PATIR N,CHENG H S. An average flow model for determining effect of three dimensional roughnesses on partial hydrodynamic lubrication[J]. ASME Journal of Lubrication Technology,1978,100(1):12-17.
[17] PATIR N,CHENG H S. Application of average flow model to lubrication between rough sliding surfaces[J]. ASME Journal of Lubrication Technology,1979,101(2):220-230.
[18] 许贤良,王开松,孟利民. 流体力学[M]. 北京:国防工业出版社,2011.XU Xianliang,WANG Kaisong,MENG Limin. Fluid dynamics[M]. Beijing:National Defence Industry Press,2011.
[19] 李庆扬,莫孜中,祁力裙. 非线性方程的数值解法[M]. 北京:科学出版社,1999.LI Qingyang,MO Zizhong,QI Liqun. Numerical method of nonlinear equation[M]. Beijing:Science Press,1999.