考虑发动机系统动力学与动力润滑耦合的活塞拍击分析

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (20) : 92-97.

论文

郑光泽1，袁林2

作者信息 +

Research on piston slap considering coupled vibration of hydrodynamic lubrication and dynamics of internal combustion engine

ZHENG Guang-ze1，YUAN Lin2

Author information +

文章历史 +

摘要

为降低活塞拍击、改善发动机振动噪声性能，考虑活塞-缸套表面粗糙度对润滑状态、活塞运动及活塞拍击影响，基于膜厚比建立活塞缸套动力学分析模型。结合考虑活塞、连杆、曲轴及缸体耦合振动的发动机系统动力学分析模型，建立考虑发动机系统动力学与动力润滑的活塞拍击分析模型，探讨活塞拍击现象。与传统的活塞-缸套非线性动力学分析模型进行对比分析，并结合缸体振动响应实验数据，讨论理论模型误差原因。

Abstract

Piston slap is the major mechanical noise source of internal combustion(IC) engine. Piston slap reduction is one of the most important countermeasures to improve the noise and vibration ability of IC engine. The influence of piston skirt and cylinder liner surface roughness on oil film dynamical behavior and piston slap was analyzed. Based on the parameter of lubricate oil film thickness and surface roughness ratio, the coupled vibration analytical model of piston skirt and cylinder liner was developed. Combined with the coupled vibration model of piston, connecting rod, crank shaft and engine block, the piston slap analytical model which take the coupled vibration of dynamics and hydrodynamic lubricate into account was constructed. The influence of Coupled vibration of Hydrodynamic Lubrication and Dynamics of IC Engine on piston movement and piston slap induced impact force was investigated. The comparison between present method and traditional method which simulate the dynamical characteristic of piston shirt and cylinder liner system by nonlinear dynamical model was discussed. Based on the experimental data, the error of the theoretical model was investigated.

导出引用

郑光泽1，袁林2. 考虑发动机系统动力学与动力润滑耦合的活塞拍击分析[J]. 振动与冲击, 2015, 34(20): 92-97

ZHENG Guang-ze1，YUAN Lin2. Research on piston slap considering coupled vibration of hydrodynamic lubrication and dynamics of internal combustion engine[J]. Journal of Vibration and Shock, 2015, 34(20): 92-97

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