In this study, surfaces of combustion chamber parts (cylinder head and piston) were coated with the new generation TBC (thermal barrier coating). Lanthanum Zirconate (La₂Zr₂O₇) based ceramic top layers which have rare element additions such as Yb, Dy and Nd (in the compound of La_1.4(Yb, Nd, Dy)_0.6Zr₂O₇) had been successfully produced via APS (Atmospheric plasma spray) method in a double layered design using CYSZ (ceria–yttria stabilized zirconia) as the second material (ceramic interlayer). A single cylinder diesel engine was used at different speeds (1200, 1400, 1600, 1800 and 2000 rpm) and full load for tests. The results of the reference engine were experimentally compared to the results of four different La₂Zr₂O₇ based coatings. The effects of coatings such as torque, specific fuel consumption, exhaust temperature, cylinder pressure, heat release rate, mass fraction burned and pressure increase rates were investigated on the engine. According to the test results, in-cylinder pressure, heat release rate, pressure increase rate, torque and exhaust temperatures increased owing to La₂Zr₂O₇ based coatings. Maximum cylinder pressure, heat release rate and torque values were reached with Yb doped La₂Zr₂O₇ coatings. Combustion occurred later and longer in the whole coated engines. Break specific fuel consumption was achieved %1.26 to 2.6% lower than the reference (uncoated) engine.

在这项研究中，燃烧室零件（气缸盖和活塞）的表面涂有新一代的TBC（隔热涂层）。锆酸镧（La ₂ Zr ₂ O ₇）基陶瓷顶层，具有罕见的元素添加，例如Yb，Dy和Nd（在La _1.4（Yb，Nd，Dy）的化合物中）_0.6 Zr ₂ O ₇）已通过APS（大气等离子喷涂）方法成功地双层制造，并使用CYSZ（氧化铈-氧化钇稳定的氧化锆）作为第二种材料（陶瓷夹层）。使用单缸柴油发动机以不同的速度（1200、1400、1600、1800和2000 rpm）和满负荷进行测试。将参考引擎的结果与四种不同的La ₂ Zr ₂ O ₇的结果进行了实验比较基涂料。在发动机上研究了涂层的影响，例如扭矩，比燃料消耗，排气温度，气缸压力，放热率，燃烧的质量分数和升压率。根据测试结果，由于基于La ₂ Zr ₂ O ₇的涂层，缸内压力，放热率，压力增加率，扭矩和排气温度增加。掺Yb的La ₂ Zr ₂ O ₇涂层达到了最大气缸压力，放热率和扭矩值。在整个涂层发动机中，燃烧发生的时间较晚，且时间较长。与基准（无涂层）发动机相比，折断特定燃料消耗降低了1.26％至2.6％。