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An investigation of mixture formation characteristics of a free-piston gasoline engine with direct-injection

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  • Yuan, Chenheng
  • Liu, Yang
  • Han, Cuijie
  • He, Yituan

Abstract

The free-piston engine generator (FPEG) is regarded as a substitute of conventional combustion engine (CCE) because of special operation mechanism and potential advantages. This article presents an investigation to analyze the fuel spray and mixture formation characteristics of a direct injection gasoline FPEG by comparing a corresponding CCE. A full-cycle multi-dimensional fuel spray model is established by coupling with dynamic, and then it is validated experimentally to predict fuel diffusion and mixture formation in the FPEG. Results indicate that compared with the CCE, the FPEG operates with lower in-cylinder gas turbulence, pressure and temperature during injection stage, so the fuel spray in FPEG receives a smaller gas resistance and behaves more impingement, longer penetration, slower evaporation, larger sauter mean diameter (SMD), and lower mixture uniformity in this stage than the CCE. However, the slower compression process of FPEG not only makes that the fuel droplets evaporates earlier, but also provides a longer duration for fuel-air mixing and diffusion. Therefore, at the moment of spark ignition, a more homogeneous mixture is formed in the FPEG, and it shows smaller SMD and higher concentration around spark plug than the CCE. This phenomenon may facilitate the spark ignition and high efficiency combustion.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:energy:v:173:y:2019:i:c:p:626-636
    DOI: 10.1016/j.energy.2019.02.063
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    References listed on IDEAS

    as
    1. Zhang, Chen & Sun, Zongxuan, 2016. "Using variable piston trajectory to reduce engine-out emissions," Applied Energy, Elsevier, vol. 170(C), pages 403-414.
    2. Hung, Nguyen Ba & Lim, Ocktaeck, 2016. "A review of free-piston linear engines," Applied Energy, Elsevier, vol. 178(C), pages 78-97.
    3. Yang, Zhenzhong & Zhang, Fu & Wang, Lijun & Wang, Kaixin & Zhang, Donghui, 2018. "Effects of injection mode on the mixture formation and combustion performance of the hydrogen internal combustion engine," Energy, Elsevier, vol. 147(C), pages 715-728.
    4. Osorio, Julian D. & Rivera-Alvarez, Alejandro, 2018. "Efficiency enhancement of spark-ignition engines using a Continuous Variable Valve Timing system for load control," Energy, Elsevier, vol. 161(C), pages 649-662.
    5. Mikalsen, R. & Roskilly, A.P., 2009. "A computational study of free-piston diesel engine combustion," Applied Energy, Elsevier, vol. 86(7-8), pages 1136-1143, July.
    6. Fan, Baowei & Pan, Jianfeng & Yang, Wenming & Pan, Zhenhua & Bani, Stephen & Chen, Wei & He, Ren, 2017. "Combined effect of injection timing and injection angle on mixture formation and combustion process in a direct injection (DI) natural gas rotary engine," Energy, Elsevier, vol. 128(C), pages 519-530.
    7. Mao, Jinlong & Zuo, Zhengxing & Feng, Huihua, 2011. "Parameters coupling designation of diesel free-piston linear alternator," Applied Energy, Elsevier, vol. 88(12), pages 4577-4589.
    8. Song, Jingeun & Lee, Ziyoung & Song, Jaecheon & Park, Sungwook, 2018. "Effects of injection strategy and coolant temperature on hydrocarbon and particulate emissions from a gasoline direct injection engine with high pressure injection up to 50 MPa," Energy, Elsevier, vol. 164(C), pages 512-522.
    9. 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.
    10. Mao, Jinlong & Zuo, Zhengxing & Li, Wen & Feng, Huihua, 2011. "Multi-dimensional scavenging analysis of a free-piston linear alternator based on numerical simulation," Applied Energy, Elsevier, vol. 88(4), pages 1140-1152, April.
    11. 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.
    12. Yuxi Miao & Zhengxing Zuo & Huihua Feng & Chendong Guo & Yu Song & Boru Jia & Yuyao Guo, 2016. "Research on the Combustion Characteristics of a Free-Piston Gasoline Engine Linear Generator during the Stable Generating Process," Energies, MDPI, vol. 9(8), pages 1-19, August.
    13. Yuan, Chenheng & Feng, Huihua & He, Yituan & Xu, Jing, 2016. "Combustion characteristics analysis of a free-piston engine generator coupling with dynamic and scavenging," Energy, Elsevier, vol. 102(C), pages 637-649.
    14. Fan, Baowei & Pan, Jianfeng & Yang, Wenming & Chen, Wei & Bani, Stephen, 2017. "The influence of injection strategy on mixture formation and combustion process in a direct injection natural gas rotary engine," Applied Energy, Elsevier, vol. 187(C), pages 663-674.
    15. Algayyim, Sattar Jabbar Murad & Wandel, Andrew P. & Yusaf, Talal & Hamawand, Ihsan, 2017. "The impact of n-butanol and iso-butanol as components of butanol-acetone (BA) mixture-diesel blend on spray, combustion characteristics, engine performance and emission in direct injection diesel engi," Energy, Elsevier, vol. 140(P1), pages 1074-1086.
    16. Zhang, Shuanlu & Zhao, Zhenfeng & Zhao, Changlu & Zhang, Fujun & Wang, Shan, 2017. "Cold starting characteristics analysis of hydraulic free piston engine," Energy, Elsevier, vol. 119(C), pages 879-886.
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    Cited by:

    1. 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.
    2. Wu, Limin & Feng, Huihua & Jia, Boru & Tang, Zhifeng & Yan, Xiaodong & Wang, Wei, 2022. "A novel method to investigate the power generation characteristics of linear generator in full frequency operation range applied to opposed-piston free-piston engine generator _ Simulation and test re," Energy, Elsevier, vol. 254(PB).
    3. Liu, Chang & Zhang, Zhiyuan & Ren, Peirong & Wei, Yidi & Jia, Boru & Zuo, Zhengxing & Wang, Wei & Feng, Huihua, 2024. "Application of semi-direct fuel injection system to free piston engine generator for better performance: Simulation approach with validation results," Energy, Elsevier, vol. 298(C).
    4. Yan, Xiaodong & Feng, Huihua & Zuo, Zhengxing & Zhang, Zhiyuan & Wu, Limin & Shi, Cheng, 2021. "A study on the working characteristics of free piston linear generator with dual cylinder configuration by different secondary injection strategies," Energy, Elsevier, vol. 233(C).

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