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Analysis of energy utilization and thermal efficiency in diesel engines under varying EGR rates

Author

Listed:
  • Han, Zhiqiang
  • Deng, Buwei
  • Wu, Xueshun
  • Tian, Wei
  • Fang, Jia
  • Wu, Yi
  • Yan, Yan
  • Zuo, Zinong

Abstract

The exhaust gas recirculation (EGR) rate significantly impacts the thermal efficiencies of diesel engines. It is important to propose a reasonably indicated thermal efficiency optimization method to clarify the core parameters influencing the EGR rate on the indicated thermal efficiency and describe the energy utilization process. This study was conducted on a diesel engine equipped with an EGR system and an adjustable two-stage turbocharging system, and the core parameters of the EGR rate affecting the indicated thermal efficiency and its intermediate process were characterized. The results showed that the changes in the percentage composition of the in-cylinder energy output are different in the EGR rate range of 0%–18 % and 18%–51 %. The variations in the percentage composition of in-cylinder energy output accounted for 36.20 %, and the changes in total input energy contributed to 63.80 % of the increase in indicated work. The proportion of intake enthalpy remains at approximately 23 %. Both the variation in total input energy and the changes in the percentage composition of in-cylinder energy output are significantly influenced by intake enthalpy. Therefore, it is considered that the key parameters affecting indicated thermal efficiency are the intake enthalpy and total input energy, which belong to the category of energy values.

Suggested Citation

  • Han, Zhiqiang & Deng, Buwei & Wu, Xueshun & Tian, Wei & Fang, Jia & Wu, Yi & Yan, Yan & Zuo, Zinong, 2025. "Analysis of energy utilization and thermal efficiency in diesel engines under varying EGR rates," Energy, Elsevier, vol. 319(C).
    • Handle: RePEc:eee:energy:v:319:y:2025:i:c:s0360544225006711
    DOI: 10.1016/j.energy.2025.135029
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    References listed on IDEAS

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    1. Han, Zhiqiang & Ding, Jiawei & Du, Defeng & Tian, Wei & Wu, Xueshun & Xia, Qi & Zuo, Zinong, 2023. "Equivalent model-based optimal matching for two-stage turbocharging systems with bypass valves," Energy, Elsevier, vol. 264(C).
    2. Halis, Serdar & Doğan, Battal, 2023. "Effects of intake air temperature on energy, exergy and sustainability analyses in an RCCI engine fueled with iso-propanol and n-heptane," Energy, Elsevier, vol. 284(C).
    3. Jin, Chao & Yao, Mingfa & Liu, Haifeng & Lee, Chia-fon F. & Ji, Jing, 2011. "Progress in the production and application of n-butanol as a biofuel," Renewable and Sustainable Energy Reviews, Elsevier, vol. 15(8), pages 4080-4106.
    4. Wang, Dawei & Shi, Lei & Zhu, Sipeng & Liu, Bo & Qian, Yuehua & Deng, Kangyao, 2020. "Numerical and thermodynamic study on effects of high and low pressure exhaust gas recirculation on turbocharged marine low-speed engine," Applied Energy, Elsevier, vol. 261(C).
    5. Thangaraja, J. & Kannan, C., 2016. "Effect of exhaust gas recirculation on advanced diesel combustion and alternate fuels - A review," Applied Energy, Elsevier, vol. 180(C), pages 169-184.
    6. Wei, Haiqiao & Zhu, Tianyu & Shu, Gequn & Tan, Linlin & Wang, Yuesen, 2012. "Gasoline engine exhaust gas recirculation – A review," Applied Energy, Elsevier, vol. 99(C), pages 534-544.
    7. Wan, Shuai & Zhou, Feng & Fu, Jianqin & Yu, Juan & Liu, Jingping & Abdellatief, Tamer M.M. & Duan, Xiongbo, 2024. "Effects of hydrogen addition and exhaust gas recirculation on thermodynamics and emissions of ultra-high compression ratio spark ignition engine fueled with liquid methane," Energy, Elsevier, vol. 306(C).
    8. Jafarmadar, Samad & Nemati, Peyman, 2017. "Analysis of Exhaust Gas Recirculation (EGR) effects on exergy terms in an engine operating with diesel oil and hydrogen," Energy, Elsevier, vol. 126(C), pages 746-755.
    9. Xu, Guangfu & Jia, Ming & Li, Yaopeng & Xie, Maozhao & Su, Wanhua, 2017. "Multi-objective optimization of the combustion of a heavy-duty diesel engine with low temperature combustion under a wide load range: (I) Computational method and optimization results," Energy, Elsevier, vol. 126(C), pages 707-719.
    10. Yao, Zhi-Min & Qian, Zuo-Qin & Li, Rong & Hu, Eric, 2019. "Energy efficiency analysis of marine high-powered medium-speed diesel engine base on energy balance and exergy," Energy, Elsevier, vol. 176(C), pages 991-1006.
    11. Wang, Yi & He, Guanzhang & Huang, Haozhong & Guo, Xiaoyu & Xing, Kongzhao & Liu, Songtao & Tu, Zhanfei & Xia, Qi, 2023. "Thermodynamic and exergy analysis of high compression ratio coupled with late intake valve closing to improve thermal efficiency of two-stage turbocharged diesel engines," Energy, Elsevier, vol. 268(C).
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