| 高速发动机油膜惯性对活塞裙润滑的影响 |
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| 引用本文： | 孟凡明,张优云.高速发动机油膜惯性对活塞裙润滑的影响[J].上海大学学报(英文版),2003,7(3):285-288. |
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| 作者姓名： | 孟凡明 张优云 |
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| 作者单位： | Theory of Lubrication and Bearing Institute，Xi' an Jiaotong University，Xi' an 710049，China，Theory of Lubrication and Bearing Institute，Xi' an Jiaotong University，Xi' an 710049，China |
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| 基金项目： | National Natural Science Foundation of China (Grant No. 59990472) |
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| 摘 要： | By an iteration method, the influence of oil film inertia on piston skirt lubrication in a high speed engine is investigated. By alternately solving the Navier-Stocks equations and the Reynolds equation, the new iteration method can trace the variations of velocity field and pressure field with time. Based on this, the mixed-lubrication model suitable for the piston skirt of high engines is proposed. By introducing the inertia coefficient, the new lubrication model includes the inertia term in oil film. The model can be also used to solve for the lubrication performances of a piston skirt in low or medium speed engines and for lubrication problem in general excluding
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| 关 键 词： | 高速发动机 油膜惯性 活塞裙 润滑性 迭代法 混合润滑雷诺方程 内燃机 |
| 收稿时间： | 5 November 2002 |
Influence of oil film inertia on piston skirt lubrication in high speed engine |
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| Meng?Fan-Ming,Zhang?You-Yun.Influence of oil film inertia on piston skirt lubrication in high speed engine[J].Journal of Shanghai University(English Edition),2003,7(3):285-288. |
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| Authors: | Meng Fan-Ming Zhang You-Yun |
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| Institution: | Theory of Lubrication and Bearing Institute, Xi'an Jiaotong University, Xi'an 710049, China |
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| Abstract: | By an iteration method, the influence of oil film inertia on piston skirt lubrication in a high speed engine is investigated. By alternately solving the Navier-Stocks equations and the Reynolds equation, the new iteration method can trace the variations of velocity field and pressure field with time. Based on this, the mixed-lubrication model suitable for the piston skirt of high engines is proposed. By introducing the inertia coefficient, the new lubrication model includes the inertia term in oil film. The model can be also used to solve for the lubrication performances of a piston skirt in low or medium speed engines and for lubrication problem in general excluding the inertia term of oil film , when the inertia coefficient is put equal to zero. The calculation results show that the influence of oil film inertia on the friction force increases with the ratio of the piston skirt's length to its diameter, the inertia coefficient and the eccentricities of the lower and the upper piston skirt, with other conditions kept constant, while the influence of it on the load capacity of oil film is small. |
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| Keywords: | high speed engine inertia iteration method mixed-lubrication Reynolds equation piston skirt |
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