活塞顶面热障涂层对活塞热负荷的影响

摘要/Abstract

摘要： 活塞顶面热障涂层可以有效降低活塞工作热负荷、提高活塞使用寿命。以一款非道路高压共轨柴油机铝合金活塞为研究对象，采用硬度塞测温法试验测试了无热障涂层活塞在最大转矩工况下表面19个特征点的温度值，同时采用等参法建立了活塞有限元仿真分析模型，对比分析了活塞顶面热障涂层对活塞温度场和热应力场的影响。研究结果表明：活塞顶面热障涂层能有效降低活塞头部和环槽区域的工作温度，活塞头部顶面区域温度下降幅度为20~32 ℃，一环和二环的环槽区域温度下降幅度为15~18 ℃；但活塞顶面采用热障涂层后，活塞基体顶面黏结层区域的热应力会急剧升高，活塞基体顶面、喉口区域以及边缘棱角处热应力集中现象明显，在活塞顶面喉口黏结层区域最大热应力达到291MPa，易导致热障涂层的剥落失效。

关键词: 柴油机, 活塞, 热障涂层, 温度场, 热应力

Abstract: TBC at the top surfaces of pistons might reduce the thermal loads and improve the service life of pistons.A non road high pressure common rail diesel engine aluminum alloy piston was used as object of the study，the temperature of 19 feature points of the common piston was measured at maximum torque conditions with hardness plug，the finite element model of piston was established by isoparametric method.The influences of TBC of piston top on piston temperature field and thermal stress field were analyzed and compared.Results show that the piston top TBC may effectively reduce the working temperature of piston head and ring groove region.The top surfaces of piston head in regional temperature decrease 20~32 [℃]，first ring and second ring groove's temperatures decrease 15~18 [℃].However，the thermal stress on the top layer of piston matrix will increase sharply when TBC is applied to piston top，especially the thermal stress concentration is obvious at the top of piston base，the throat area and the edge angle.The maximum thermal stress in the bonding zone of top throat of piston top reaches 291 MPa，which will lead to the spalling failure of TBCs.

Key words: diesel engine, piston, thermal barrier coating（TBC), distribution of temperature, thermal stress

中图分类号:

TK422

牛小强1;雷基林1;邓晰文1;文均2;温志高2. 活塞顶面热障涂层对活塞热负荷的影响[J]. 中国机械工程.

NIU Xiaoqiang1;LEI Jilin1;DENG Xiwen1;WEN Jun2;WEN Zhigao2. Effects-of-Thermal-Barrier-Coatings-on-Thermal-Loads at-Piston-Top-Surfaces[J]. China Mechanical Engineering.

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http://www.cmemo.org.cn/CN/Y2018/V29/I12/1499

参考文献

[1]纪小健，李辉，栗卓新，等.热障涂层的研究进展及其在燃气轮机的应用[J].燃气轮机技术，2008，21（2）:8-10.
JI Xiaojian，LI Hui，LI Zhuoxin，et al.Application and Development of Thermal Barrier Coating Used in Gas Turbine [J].Gas Turbine Technology，2008，21（2）:8-10.
[2]刘纯波，林峰，蒋显亮.热障涂层的研究现状与发展趋势[J].中国有色金属学报，2007，17（1）：1-13.
LIU Chunbo，LIN Feng，JIANG Xianliang.Current State and Future Development of Thermal Barrier Coating[J].The Chinese Journal of Nonferrous,2007,17（1）:1-13.
[3]WOLFE D，SINGH J.Functionally Gradient Ceramic/ Metallic Coatings for Gas Turbine Components by High- energy Beams for High- temperature Applications[J] .Journal of Materials Science，1998，33 （14）：3677-3692 .
[4]SZYMCZYK W.Numerical Simulation of Composite Surface Coating as a Functionally Graded Material [J].Materials Science & Engineering A，2005，412（1/2）:61-65.
[5]TAYMAZ I.The Effect of Thermal Barrier Coatings on Diesel Engine Performance [J].Surface & Coatings Technology，2007，201（9/11）:5249-5252.
[6]DURAT M，KAPSIZ M，NART E，et al.The Effects of Coating Materials in Spark Ignition Engine Design [J].Materials and Design，2012，36（12）:540-545.
[7]CERIT M，AYHAN V，PARLAK A，et al.Thermal Analysis of a Partially Ceramic Coated Piston：Effect on Cold Start HC Emission in a Spark Ignition Engine [J].Applied Thermal Engineering，2011，31（2/3）:336-341.
[8]TAYMAZ I.The Effect of Thermal Barrier Coatings on Diesel Engine Performance [J].Surface & Coatings Technology，2007,201（9/11）:5249-5252.
[9]HEJWOWSKI T.Comparative Study of Thermal Barrier Coatings for Internal Combustion Engine [J].Vacuum，2010，85（5）:610-616.
[10]BUYUKKAYA E，CERIT M.Thermal Analysis of a Ceramic Coating Diesel Engine Piston Using 3-D Finite Element Method [J].Surface & Coatings Technology,2007,202:398-402.
[11]张志勇，黄荣华.发动机活塞温度测量方法综述[J].柴油机设计与制造，2005，14（1）：19-23.
ZHANG Zhiyong.Overview of Engine Piston Temperature Measuring Methods [J].Design and Manufacture of Diesel Engine，2005，14（1）:19-23.
[12]严兆大.内燃机测试技术（修订版）[M].杭州:浙江大学出版社，1993：145-149.
YAN Zhaoda.Internal Combustion Engine Testing Technology （Revised Edition） [M].Hangzhou：Zhejiang University Press，1993：145-149.
[13]雷基林，申立中，毕玉华，等.增压中冷柴油机活塞温度场试验研究[J].内燃机工程，2007,28（5）:41-44.
LEI Jilin，SHEN Lizhong，BI Yuhua，et al.Experimental Research on Piston Temperature Filed of a Turbocharged Intercooled Diesel Engine [J].Chinese Internal Combustion Engine Engineering，2007，28（5）:41-44.
[14]雷基林，申立中，杨永忠.4100QBZ型增压柴油机活塞温度场试验研究及有限元分析[J].内燃机学报，2007，25（5）：445-450.
LEI Jilin，SHEN Lizhong，YANG Yongzhong.Finite Element Analysis and Temperature Filed Measurement of 4100QBZ Turbocharged Diesel Engine Piston [J].Transactions of CSICE，2007，25（5）：445-450.
[15]冯忆艰，杜双松，程继贵，等.活塞顶部功能梯度涂层的有限元模拟热分析[J].农业机械学报，2008，39（11）：30-34.
FENG Yijian，DU Shuangsong，CHENG Jigui，et al.FEM Simulation and Thermal Analysis of Functional Gradient Materials as Thermal Barrier Coating of Piston Top[J].Transactions of the Chinese Society of Agricultural Machinery，2008，39（11）:30-34.
[16]王素，倪春阳，朱玉明，等.陶瓷纤维梯度增强活塞的梯度方程研究[J].航空学报，2007，28（1）：234-239.
WANG Su，NI Chunyang，ZHU Yuming，et al.Study on Material Composition Functions of Gradient Aluminum Matrix Composite Piston Reinforced by Ceramic Fibers [J].Acta Aeronautica et Astronautica Sinica，2007，28 （1）:234-239.
[17]黄立新，杨真真，张晓磊，等.基于ABAQUS的功能梯度材料等参梯度有限元分析[J].玻璃钢/复合材料，2014（2）:33-38.
HUANG Lixin，YANG Zhenzhen，ZHANG Xiaolei，et al.An Analysis of Functionally Graded Materials by the Isoparametric Graded Finite Element Method Based on Abaqus [J].Fiber Reinforced Plastics/Composites，2014 （2）:33-38.
[18]陆瑞松，林发森，张瑞.内燃机的传热与热负荷[M].北京:机械工业出版社，1985:210-229.
LU Ruisong，LIN Fasen，ZHANG Rui.Heat Transfer and Heat Load of Internal Combustion Engine [M].Beijing：Machinery Industry Press，1985:210-229.
[19]雷基林，申立中，杨永忠，等.4100QBZ增压柴油机活塞机械负荷与热负荷耦合分析[J].燃烧科学与技，2008，14（1）：61-66.
LEI Jilin，SHEN Lizhong，YANG Yongzhong，et al.Coupled Thermal and Mechanical Load Analysis in the 4100QBZ Turbocharged Diesel Engine Piston [J].Journal of Combustion Science and Technology，2008,14（1）:61-66.
[20]杨晓光，耿瑞.带热障涂层导向器叶片二维温度场及热应力分析[J].航空动力学报，2002，17（4）：432-436.
YANG Xiaoguang，GENG Rui.The Analysis of 2D Temperature and Thermal Stress of TBC-coated Turbine Vane [J].Journal of Aerospace Power，2002，17（4）:432-436.
[21]龚京风，宣领宽，周少伟，等.热障涂层活塞热应力分析的格点型有限体积法[J].哈尔滨工业大学学报，2016，48（7）:76-81.
GONG Jingfeng，XUAN Lingkuan，ZHOU Shaowei，et al.Cell Vertex FVM for Thermos Elastic Analysis of the Piston with Thermal Barrier Coating [J].Journal of Harbin Institute of Technology，2016,48（7）:76-81.
[22]王志平，韩志勇，陈亚军，等.热障涂层的三维界面形貌与热应力关系[J].焊接学报，2011，32（1）:21-24.
WANG Zhiping，HAN Zhiyong，CHEN Yajun，et al.Relations between 3 Dimension Interface Topography with Thermal Stress of Thermal Barrier Coatings [J].Transactions of the China Welding Institution，2011,32 （1）:21-24.
[23]王永国，艾兴，李兆前，等.梯度功能陶瓷刀具的热应力分析[J].机械工程学报，2003，39（4）:53-55.
WANG Yongguo，AI Xing，LI Zhaoqian.Thermal Stresses Analysis of Functionally Graded Ceramic Tool [J].Journal of Mechanical Engineering，2003，39 （4）:53-55.