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首页> 外文会议>SAE World Congress, Detroit >A Study of Abnormal Wear in Power Cylinder of Diesel Engine with EGR - Wear Mechanism of Soot Contaminated in Lubricating Oil
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A Study of Abnormal Wear in Power Cylinder of Diesel Engine with EGR - Wear Mechanism of Soot Contaminated in Lubricating Oil

机译：柴油EGR - 磨损机理润滑油磨损机理的电力缸体异常磨损研究

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Exhaust-gas recirculation (EGR) causes the piston ring and cylinder liners of a diesel engine to suffer abnormal wear. The present study aimed at making clear the mechanism of wear which is induced by soot in the EGR gas. The piston ring has been chrome plated and the cylinder was made of boron steadite cast iron. Detailed observations of the ring sliding surfaces and that of the wear debris contained in lubricating oil were carried out. As a result, it was found that the wear of the top ring sliding surfaces identify abrasive wear without respect to the presence of EGR by steadite on the cylinder liner sliding surface. In addition, it is confirmed in a cutting test that soot mixed lubricating oil improved in performance as cutting oil. Based on these results, we proposed the hypothesis in the present study that ring wear is accelerated at EGR because abrasive wear increases due to a lot of soot mixed into lubricating oil improving the performance of lubricating oil as cutting oil.
机译：排气再循环（EGR）使柴油发动机的活塞环和缸衬有遭受异常磨损。本研究旨在清除磨损在EGR气体中诱导的磨损机制。活塞环一直是镀铬，气缸由硼型铸铁制成。进行环形滑动表面的详细观察以及润滑油中含有的磨损碎片。结果，发现顶部环滑动表面的磨损识别磨料磨损，而不会通过气缸衬套滑动表面上的螺节件的磨损磨损。此外，在切割试验中确认烟灰混合润滑油随着切削油而改善。基于这些结果，我们提出了本研究的假设，即EGR在EGR时加速戒指磨损，因为由于大量烟灰混入润滑油，提高了润滑油作为切削油的性能。

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