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Investigation of Burn Duration and NO Emission in Lean Mixture with CNG and Gasoline

Author

Listed:
  • Hüseyin Emre Doğan

    (Graduate School of Science, Engineering and Technology, Istanbul Technical University, Istanbul 34469, Turkey)

  • Osman Akın Kutlar

    (Faculty of Mechanical Engineering, Istanbul Technical University, Istanbul 34437, Turkey)

  • Majid Javadzadehkalkhoran

    (Graduate School of Science, Engineering and Technology, Istanbul Technical University, Istanbul 34469, Turkey)

  • Abdurrahman Demirci

    (Mechanical Engineering Department, Karamanoğlu Mehmetbey University, Karaman 70200, Turkey)

Abstract

The results of experiments performed by gasoline and natural gas fuels in a single cylinder research engine were evaluated in this study. The main objective of this study is to compare exhaust gas emissions, efficiency, and burn durations for both fuels in stoichiometric and lean mixture. At the same time, cycle to cycle variation in these operating conditions should not exceed an acceptable value. In the ultra-lean mixture, gasoline fuel exceeded this determined limit before Compressed Natural Gas (CNG). Therefore, the reduction in NO was restricted by cyclic variations. In combustion analysis, although the burn duration of the gasoline in stoichiometric conditions was shorter than CNG, this situation reversed in favor of CNG in the ultra-lean mixtures. Contrary to some studies in the literature, the spark advance and ignition delay for CNG were the same or shorter than gasoline in this study. The primary reasons for this change are the high compression ratio and the different combustion chamber geometry. The increase in turbulence intensity has different effects on CNG and gasoline. As a result, it has been observed that NO emissions can meet the limits without a loss of efficiency for this engine operated with CNG under the ultra-lean mixture.

Suggested Citation

  • Hüseyin Emre Doğan & Osman Akın Kutlar & Majid Javadzadehkalkhoran & Abdurrahman Demirci, 2019. "Investigation of Burn Duration and NO Emission in Lean Mixture with CNG and Gasoline," Energies, MDPI, vol. 12(23), pages 1-18, November.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:23:p:4432-:d:289631
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    References listed on IDEAS

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    1. Liu, Jinlong & Dumitrescu, Cosmin E., 2018. "Flame development analysis in a diesel optical engine converted to spark ignition natural gas operation," Applied Energy, Elsevier, vol. 230(C), pages 1205-1217.
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    1. Denghao Zhu & Jun Deng & Jinqiu Wang & Shuo Wang & Hongyu Zhang & Jakob Andert & Liguang Li, 2020. "Development and Application of Ion Current/Cylinder Pressure Cooperative Combustion Diagnosis and Control System," Energies, MDPI, vol. 13(21), pages 1-21, October.
    2. Al-Harbi, Ahmed A. & Alabduly, Abdullah J. & Alkhedhair, Abdullah M. & Alqahtani, Naif B. & Albishi, Miqad S., 2022. "Effect of operation under lean conditions on NOx emissions and fuel consumption fueling an SI engine with hydrous ethanol–gasoline blends enhanced with synthesis gas," Energy, Elsevier, vol. 238(PA).
    3. Michał Głogowski & Przemysław Kubiak & Szymon Szufa & Piotr Piersa & Łukasz Adrian & Mateusz Krukowski, 2021. "The Use of the Fourier Series to Analyze the Shaping of Thermodynamic Processes in Heat Engines," Energies, MDPI, vol. 14(8), pages 1-23, April.
    4. Wojciech Kamela & Marcin K. Wojs & Piotr Orliński, 2022. "Calculation Method for Assessing the Storage Capacity of Nitrogen Compounds in LNT Reactors," Energies, MDPI, vol. 15(20), pages 1-9, October.

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