In this study, the effects of thermal barrier coating (TBC) and diesel-ethanol mixture fuel on carcinogenic and greenhouse-causing harmful emissions from diesel engines were experimentally investigated. In the first stage, the combustion chamber parts of the single cylinder diesel engine were coated with ceramic Al₂O₃TiO₂ material with low thermal conductivity. Plasma spray method was used as the coating method. Then, coated and uncoated engines were run on diesel fuel. In the second stage, ethanol-diesel mixture containing 5% ethanol E5 (v/v) was used in both engines. In both stages, the engines were operated at full load and at different engine speeds and compared in terms of emissions and performance. Combustion improved as the effect of the increased in-cylinder temperature thanks to the low heat transfer with TBC. Therefore, an increase in engine power occurred. However, when E5 fuel was used in the TBC engine, the engine power decreased slightly. In the coated engine, HC and CO emissions have been significantly reduced. NOx emission increased with the effect of the thermal barrier coating, but decreased by 18% with the addition of ethanol in the TBC engine due to lower calorific value of ethanol.

中文翻译：

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乙醇-柴油混合物对热障涂层柴油机性能和排放影响的实验研究

在这项研究中，实验研究了热障涂层 (TBC) 和柴油-乙醇混合燃料对柴油发动机的致癌和温室气体有害排放的影响。在第一阶段，单缸柴油机的燃烧室部件涂有陶瓷Al ₂ O ₃  TiO ₂导热系数低的材料。使用等离子喷涂法作为涂层方法。然后，涂层和未涂层​​的发动机使用柴油燃料运行。在第二阶段，两台发动机都使用了含有 5% 乙醇 E5 (v/v) 的乙醇-柴油混合物。在这两个阶段，发动机都在满负荷和不同的发动机转速下运行，并在排放和性能方面进行了比较。由于与 TBC 的低传热，燃烧得到改善，因为缸内温度升高。因此，发动机功率增加。然而，当 TBC 发动机使用 E5 燃料时，发动机功率略有下降。在涂层发动机中，HC 和 CO 排放量已显着减少。NOx 排放随着热障涂层的影响而增加，