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A modified diesel engine for natural gas operation: Performance and emission tests

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  • Poompipatpong, Chedthawut
  • Cheenkachorn, Kraipat

Abstract

A diesel engine was modified for natural gas operation to optimize performance using gaseous fuel. A variation of combustion ratios (CR) including 9.0:1, 9.5:1, 10.0:1 and 10.5:1 was utilized to evaluate engine performance and emissions from the same engine over the engine speeds between 1000 and 4000 rpm. Tested engine performance parameters include brake torque, brake power, specific fuel consumption (SFC) and brake thermal efficiency. Emissions tests recorded total hydrocarbon (THC), nitrogen oxides (NOx) and carbon monoxide (CO). The results showed that a CR of 9.5:1 had the highest thermal efficiency and the lowest SFC while a CR of 10:1 showed a high torque at low speed. THC emissions were directly proportional to the CR. NOx emissions increased with increasing CR and then declined after a CR of 10:1.

Suggested Citation

  • Poompipatpong, Chedthawut & Cheenkachorn, Kraipat, 2011. "A modified diesel engine for natural gas operation: Performance and emission tests," Energy, Elsevier, vol. 36(12), pages 6862-6866.
    • Handle: RePEc:eee:energy:v:36:y:2011:i:12:p:6862-6866
    DOI: 10.1016/j.energy.2011.10.009
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    References listed on IDEAS

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    1. Selim, Mohamed Y.E, 2001. "Pressure–time characteristics in diesel engine fueled with natural gas," Renewable Energy, Elsevier, vol. 22(4), pages 473-489.
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    2. Li, Menghan & Zhang, Qiang & Liu, Xiaori & Ma, Yuxian & Zheng, Qingping, 2018. "Soot emission prediction in pilot ignited direct injection natural gas engine based on n-heptane/toluene/methane/PAH mechanism," Energy, Elsevier, vol. 163(C), pages 660-681.
    3. Zhang, Qiang & Li, Menghan & Li, Guoxiang & Shao, Sidong & Li, Peixin, 2017. "Transient emission characteristics of a heavy-duty natural gas engine at stoichiometric operation with EGR and TWC," Energy, Elsevier, vol. 132(C), pages 225-237.
    4. Xi, Haoran & Fu, Jianqin & Zhou, Feng & Yu, Juan & Liu, Jingping & Meng, Zhongwei, 2023. "Experimental and numerical studies of thermal power conversion and energy flow under high-compression ratios of a liquid methane engine (LME)," Energy, Elsevier, vol. 284(C).
    5. Li, Weifeng & Liu, Zhongchang & Wang, Zhongshu, 2016. "Experimental and theoretical analysis of the combustion process at low loads of a diesel natural gas dual-fuel engine," Energy, Elsevier, vol. 94(C), pages 728-741.
    6. Hotta, Santosh Kumar & Sahoo, Niranjan & Mohanty, Kaustubha & Kulkarni, Vinayak, 2020. "Ignition timing and compression ratio as effective means for the improvement in the operating characteristics of a biogas fueled spark ignition engine," Renewable Energy, Elsevier, vol. 150(C), pages 854-867.
    7. Li, Menghan & Zhang, Qiang & Li, Guoxiang & Shao, Sidong, 2015. "Experimental investigation on performance and heat release analysis of a pilot ignited direct injection natural gas engine," Energy, Elsevier, vol. 90(P2), pages 1251-1260.
    8. Geng, Peng & Cao, Erming & Tan, Qinming & Wei, Lijiang, 2017. "Effects of alternative fuels on the combustion characteristics and emission products from diesel engines: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 71(C), pages 523-534.
    9. Zhao, Jianbiao & Ma, Fanhua & Xiong, Xingwang & Deng, Jiao & Wang, Lijun & Naeve, Nashay & Zhao, Shuli, 2013. "Effects of compression ratio on the combustion and emission of a hydrogen enriched natural gas engine under different excess air ratio," Energy, Elsevier, vol. 59(C), pages 658-665.
    10. Abu-Jrai, Ahmad M. & Al-Muhtaseb, Ala'a H. & Hasan, Ahmad O., 2017. "Combustion, performance, and selective catalytic reduction of NOx for a diesel engine operated with combined tri fuel (H2, CH4, and conventional diesel)," Energy, Elsevier, vol. 119(C), pages 901-910.
    11. Zhen, Xudong & Wang, Yang, 2015. "Numerical analysis on original emissions for a spark ignition methanol engine based on detailed chemical kinetics," Renewable Energy, Elsevier, vol. 81(C), pages 43-51.

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