| 吕修颐,王永强,焦博文,等.考虑摩擦化学反应的活塞环-缸套摩擦力计算模型修正及验证[J].内燃机工程,2022,43(2):92-99. |
| 考虑摩擦化学反应的活塞环-缸套摩擦力计算模型修正及验证 |
| Modification and Verification of the Friction Calculation Model of Piston Ring-Liner Considering Tribochemical Reaction |
| DOI：10.13949/j.cnki.nrjgc.2022.02.012 |
| 关键词:活塞环—缸套 边界润滑 摩擦化学膜 模型修正 |
| Key Words:piston ring-liner boundary lubrication tribofilm model modification |
| 基金项目:工信部GJSCB项目（工信部装函［2019］360号） |
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| 摘要:通过MFT—3000往复摩擦磨损试验机进行了活塞环—缸套摩擦副边界润滑状态下摩擦化学膜摩擦系数的测量。首先，通过适用于试验机的润滑仿真模型得到了能够出现边界润滑状态的工况范围，完成了试验工况的初步筛选，并通过试验对此范围的合理性进行了验证。然后，设置空白对照试验保证试验过程中能够生成摩擦化学膜。最后，通过多因素（载荷、频率及添加剂质量分数）试验测量了活塞环—缸套边界润滑状态下摩擦化学膜的摩擦系数。基于试验结果，在原有摩擦力计算模型的基础上，考虑了摩擦化学膜的影响，补充了边界润滑状态下摩擦化学膜的摩擦系数。结果表明，修正后的摩擦力计算结果更接近试验结果，其平均摩擦力的计算精度提高了9.17%。 |
| Abstract:The tribofilm friction coefficient of the piston ring-liner under the boundary lubrication was measured by the MFT—3000 reciprocating friction and wear tester. The range of working conditions where the boundary lubrication regime would appear was obtained through the lubrication simulation model suitable for the testing machine. Then a blank control test was set up to ensure that the tribofilm could be generated during the test. Through multi-factor （load， frequency and additive mass percentage concentration） tests， the friction coefficient of tribofilm under the boundary lubrication regime of the piston ring-cylinder liner was measured. Based on the original friction calculation model， the influence of the tribofilm was considered， and the friction coefficient of the tribofilm under the boundary lubrication regime was supplemented. Results show that the corrected friction calculation result is closer to the test result， and the calculation accuracy of the average friction is improved by 9.17%. |
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