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Effects of Injector Spray Angle on Performance of an Opposed-Piston Free-Piston Engine

Author

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  • Qinglin Zhang

    (School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China)

  • Zhaoping Xu

    (School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China)

  • Shuangshuang Liu

    (School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China)

  • Liang Liu

    (School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China)

Abstract

A free-piston engine is a novel internal combustion engine which has the advantages of a variable compression ratio and multi-fuel adaptability. This paper focuses on numerical simulation for combustion process and spray angle optimization of an opposed-piston free-piston engine. The working principle and spray-guided central combustor structure of the engine are discussed. A three-dimensional computational fluid dynamic model with moving mesh is presented based on the tested piston motion of the prototype. Calculation conditions, spray models, and combustion models were set-up according to the same prototype. The effects of spray angle on fuel evaporation rate, mixture distribution, heat release rate, in-cylinder pressure, in-cylinder temperature, and emissions were simulated and analyzed in detail. The research results indicate that the performance of the engine was very sensitive to the spray angle. The combustion efficiency and the indicated thermal efficiencies of 97.5% and 39.7% were obtained as the spray angle reached 40°.

Suggested Citation

  • Qinglin Zhang & Zhaoping Xu & Shuangshuang Liu & Liang Liu, 2020. "Effects of Injector Spray Angle on Performance of an Opposed-Piston Free-Piston Engine," Energies, MDPI, vol. 13(14), pages 1-17, July.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:14:p:3735-:d:387016
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    References listed on IDEAS

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    1. Wang, Qian & Wu, Fan & Zhao, Yan & Bai, Jin & Huang, Rong, 2019. "Study on combustion characteristics and ignition limits extending of micro free-piston engines," Energy, Elsevier, vol. 179(C), pages 805-814.
    2. Shu, Jun & Fu, Jianqin & Liu, Jingping & Ma, Yinjie & Wang, Shuqian & Deng, Banglin & Zeng, Dongjian, 2019. "Effects of injector spray angle on combustion and emissions characteristics of a natural gas (NG)-diesel dual fuel engine based on CFD coupled with reduced chemical kinetic model," Applied Energy, Elsevier, vol. 233, pages 182-195.
    3. Feng, Huihua & Guo, Chendong & Yuan, Chenheng & Guo, Yuyao & Zuo, Zhengxing & Roskilly, Anthony Paul & Jia, Boru, 2016. "Research on combustion process of a free piston diesel linear generator," Applied Energy, Elsevier, vol. 161(C), pages 395-403.
    4. Shi, Lei & Ji, Changwei & Wang, Shuofeng & Su, Teng & Cong, Xiaoyu & Wang, Du & Tang, Chuanqi, 2019. "Effects of second injection timing on combustion characteristics of the spark ignition direct injection gasoline engines with dimethyl ether enrichment in the intake port," Energy, Elsevier, vol. 180(C), pages 10-18.
    5. Han, Taehoon & Singh, Ripudaman & Lavoie, George & Wooldridge, Margaret & Boehman, André, 2020. "Multiple injection for improving knock, gaseous and particulate matter emissions in direct injection SI engines," Applied Energy, Elsevier, vol. 262(C).
    6. Yuan, Chenheng & Liu, Yang & Han, Cuijie & He, Yituan, 2019. "An investigation of mixture formation characteristics of a free-piston gasoline engine with direct-injection," Energy, Elsevier, vol. 173(C), pages 626-636.
    7. Marco Ciampolini & Simone Bigalli & Francesco Balduzzi & Alessandro Bianchini & Luca Romani & Giovanni Ferrara, 2020. "CFD Analysis of the Fuel–Air Mixture Formation Process in Passive Prechambers for Use in a High-Pressure Direct Injection (HPDI) Two-Stroke Engine," Energies, MDPI, vol. 13(11), pages 1-25, June.
    8. Rafaa Saaidia & Mohamed Ali Jemni & Mohamed Salah Abid, 2017. "Simulation and Empirical Studies of the Commercial SI Engine Performance and Its Emission Levels When Running on a CNG and Hydrogen Blend," Energies, MDPI, vol. 11(1), pages 1-22, December.
    9. Shi, Zhicheng & Lee, Chia-fon & Wu, Han & Li, Haiying & Wu, Yang & Zhang, Lu & Bo, Yaqing & Liu, Fushui, 2020. "Effect of injection pressure on the impinging spray and ignition characteristics of the heavy-duty diesel engine under low-temperature conditions," Applied Energy, Elsevier, vol. 262(C).
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    Cited by:

    1. Zhang, Yan & Yang, Binbin & Ji, Deliang & Hou, Xiaochen & Zhao, Bo & Zhang, Tiezhu, 2023. "Integrated simulation and performance analysis of Confined Piston Linear Generator (CPLG)," Energy, Elsevier, vol. 282(C).
    2. Chen, Leiming & Xu, Zhaoping & Liu, Shuangshuang & Liu, Liang, 2022. "Dynamic modeling of a free-piston engine based on combustion parameters prediction," Energy, Elsevier, vol. 249(C).

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