Development of turbocharger engine system using 3D and 1D simulation to achieve 50% brake thermal efficiency
Development of turbocharger engine system using 3D and 1D simulation to achieve 50% brake thermal efficiency
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开发%20的%20涡轮增压器%20发动机%20系统%20使用%203D%20和%201D%20模拟%20到%20实现%2050%%20制动%20热%20效率
DOI：
10.1088/1742-6596/1909/1/012085
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
Kuboyama Tatsuya
中科院分区：
文献类型：
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作者：
Nakamura Yohei;Miyagawa Kazuyoshi;Moriyoshi Yasuo;Kuboyama Tatsuya
近年来，由于全球变暖等环境问题，汽车尾气监管变得更加严格。内阁府于2014年启动了一项名为战略创新促进计划(SIP)的项目。SIP共有11个主题。其中之一是创新燃烧技术，旨在将汽车的热效率从现有的40%提高到50%。为了提高汽车的热效率，提高涡轮增压器的效率是必不可少的。在这项研究中，我们开发了一种用于汽油和柴油发动机的涡轮增压器。首先，为了验证常规涡轮增压器的效率，对一台商用涡轮增压器进行了实验和CFD分析。数值计算采用了有限元分析软件Ansys-CFX。为了验证CFD的准确性，将CFD计算结果与实验结果进行了对比，两者吻合较好。根据分析结果，明确了常规涡轮增压器的损耗区。设计的涡轮增压压气机作为样机进行了试验。压气机的计算结果与CFD计算结果吻合较好，验证了CFD的准确性和设计方法的有效性。最后，利用汽车系统分析软件GT-Power进行了一维仿真，对所开发的增压器在发动机上的性能进行了评估。在项目实施的第五年，实现了50%的目标效率。
In recent years, automobile exhaust gas regulations have become stricter due to environmental problems such as global warming. A project by the Cabinet Office called the Strategic Innovation Promotion Program (SIP) began in 2014. SIP has 11 themes in total. One of them, innovative combustion technology, aimed to improve the thermal efficiency of automobiles from the existing 40% to 50%. To improve the thermal efficiency of the automobile, it was essential to improve the efficiency of the turbocharger. In this study, we developed a turbocharger for gasoline and diesel engines. First, to confirm the efficiency of the conventional turbocharger, experiments and CFD analysis of a commercial turbocharger were performed. ANSYS-CFX was used as a numerical code. To confirm the accuracy of the CFD, the CFD results were compared with the experimental results, and it had good agreement with the experimental results. From the analysis results, the loss region of the conventional turbocharger was clarified. The designed turbocharger compressor was tested as a prototype compressor. The results of the compressor had good agreement with CFD results, so it was confirmed that the accuracy of CFD and design method was valid. Finally, A one-dimensional simulation using GT-Power which is a system analysis software for automobiles was performed to evaluate the developed turbocharger on the engine. In the fifth year of the project, the target efficiency of 50% was achieved.