裙部型线对内燃机活塞二阶运动和活塞裙部润滑的影响研究
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摘要
以某多缸内燃机为研究对象,研究活塞裙部纵向型线对活塞二阶运动和活塞裙-缸套摩擦副润滑性能的影响。考虑活塞裙部和缸套的表面粗糙度与微凸体接触,建立了活塞二阶运动方程与平均Reynolds方程相结合的活塞裙-缸套摩擦副润滑分析模型。活塞二阶运动方程采用Broyden方法求解,应用有限差分法进行活塞裙-缸套摩擦副的润滑分析。结果表明,采用二次曲线型活塞裙部有利于改善活塞裙-缸套摩擦副润滑性能、降低内燃机摩擦损失、减轻活塞对气缸套的冲击和提高内燃机工作的平顺性。
This paper focuses on the multi-cylinder internal combustion engine. The analysis is conducted on the effect of skirt form line on the second-order motion of piston and the lubrication performance of piston skirt-cylinder liner frictional pair.The model of the lubrication of piston skirt-cylinder liner frictional pair is set up on the basis of the second-order motion equation of piston and the average Reynolds equation, with the surface roughness and the micro-bulge contact of piston skirt and cylinder liner taken into account. The second-order motion equation of piston is solved by means of the Broyden method. The lubrication of piston skirt-cylinder liner frictional pair is analyzed via the finite difference method. The results show that when the quadratic curved piston skirt is applied, the lubrication performance of piston skirt-cylinder liner frictional pair can be enhanced,the frictional loss of engine can be reduced, the shock of piston on the cylinder liner can be alleviated, and the operating smoothness of engine can be improved.
This paper focuses on the multi-cylinder internal combustion engine. The analysis is conducted on the effect of skirt form line on the second-order motion of piston and the lubrication performance of piston skirt-cylinder liner frictional pair.The model of the lubrication of piston skirt-cylinder liner frictional pair is set up on the basis of the second-order motion equation of piston and the average Reynolds equation, with the surface roughness and the micro-bulge contact of piston skirt and cylinder liner taken into account. The second-order motion equation of piston is solved by means of the Broyden method. The lubrication of piston skirt-cylinder liner frictional pair is analyzed via the finite difference method. The results show that when the quadratic curved piston skirt is applied, the lubrication performance of piston skirt-cylinder liner frictional pair can be enhanced,the frictional loss of engine can be reduced, the shock of piston on the cylinder liner can be alleviated, and the operating smoothness of engine can be improved.
引文
[1]孙军,王先义,张亮,等.计入润滑油输送状况的活塞裙部-缸套摩擦副的润滑分析[J].机械工程学报,2014,50(9):84-90.
[2]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.
[3]余志壮,宋正华,董光能,等.内燃机气缸套失圆对活塞动压润滑和摩擦特性的影响[J].摩擦学学报,2005,25(3):243-247.
[4]陈传举.内燃机活塞裙部的流体动力润滑特性[J].农业机械学报,2005,36(8):13-16.
[5]孟凡明,赵荣珍,张优云.气缸振动对活塞裙润滑的影响[J].内燃机学报,2003,21(2):179-182.
[6]孟凡明,董光能,张优云.耦合弹性变形的活塞裙润滑有限元求解[J].内燃机学报,2003,21(6):461-466.
[7]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.
[8]刘焜,桂长林,谢友柏,等.活塞裙部的润滑分析及活塞系统2阶运动的研究[J].内燃机学报,1998,16(2):191-195.
[9]张家玺,薛兴建,马保吉,等.发动机活塞裙部润滑分析[J].车用发动机,1997(1):26-31.
[10]李悦,段京华,孙军,等.内燃机活塞裙部-缸套摩擦副润滑研究的现状、讨论与展望[J].内燃机, 2002(1):38-43.
[11] Zhu D,Cheng H S,Arai T,et al. A numerical simulation analysis for piston skirts in mixed lubrication-Part I:Basic modeling[J]. Journal of Tribology,1992,114:553-562.
[12] Li D F, Rhode S M, Ezzat H A. An automotive piston lubrication model[J]. ASLE Transactions,1983,26:151-160.
[13] Knoll G D,Peeken H J. Hydrodynamic lubrication of piston skirts[J]. Journal of Lubrication Technology, 1982, 104:504-508.
[14] Patir N,Cheng H S. An average flow model for determining effect of three dimensional roughnesses on partial hydrodynamic lubrication[J]. Journal of Lubrication Technology,1978,100(1):12-17.
[15] Greenwood J A,Tripp J H. The contact of two nominally flat rough surfaces[J]. Proc Instn Mech Engrs,1970,185:625-633.
[2]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.
[3]余志壮,宋正华,董光能,等.内燃机气缸套失圆对活塞动压润滑和摩擦特性的影响[J].摩擦学学报,2005,25(3):243-247.
[4]陈传举.内燃机活塞裙部的流体动力润滑特性[J].农业机械学报,2005,36(8):13-16.
[5]孟凡明,赵荣珍,张优云.气缸振动对活塞裙润滑的影响[J].内燃机学报,2003,21(2):179-182.
[6]孟凡明,董光能,张优云.耦合弹性变形的活塞裙润滑有限元求解[J].内燃机学报,2003,21(6):461-466.
[7]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.
[8]刘焜,桂长林,谢友柏,等.活塞裙部的润滑分析及活塞系统2阶运动的研究[J].内燃机学报,1998,16(2):191-195.
[9]张家玺,薛兴建,马保吉,等.发动机活塞裙部润滑分析[J].车用发动机,1997(1):26-31.
[10]李悦,段京华,孙军,等.内燃机活塞裙部-缸套摩擦副润滑研究的现状、讨论与展望[J].内燃机, 2002(1):38-43.
[11] Zhu D,Cheng H S,Arai T,et al. A numerical simulation analysis for piston skirts in mixed lubrication-Part I:Basic modeling[J]. Journal of Tribology,1992,114:553-562.
[12] Li D F, Rhode S M, Ezzat H A. An automotive piston lubrication model[J]. ASLE Transactions,1983,26:151-160.
[13] Knoll G D,Peeken H J. Hydrodynamic lubrication of piston skirts[J]. Journal of Lubrication Technology, 1982, 104:504-508.
[14] Patir N,Cheng H S. An average flow model for determining effect of three dimensional roughnesses on partial hydrodynamic lubrication[J]. Journal of Lubrication Technology,1978,100(1):12-17.
[15] Greenwood J A,Tripp J H. The contact of two nominally flat rough surfaces[J]. Proc Instn Mech Engrs,1970,185:625-633.