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Experimental Study on the Effects of Air Supply Control on Combustion and Emissions Performance at Medium and Low Load for a Dual-Fuel Diesel Engine

Author

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  • Yu-Hui Peng

    (School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China)

  • Yu-Peng Huang

    (School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China)

  • Jia-You Tang

    (School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China)

  • Qi-Feng Huang

    (School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China
    Department of Mechanical and Electrical Engineering, Longyan University, Longyan 364012, China)

  • Yi-Ran Huang

    (Fujian Lijia Co., Ltd., Zhangzhou 363006, China)

Abstract

Lowering the amount of excess air is believed to increase the density of the air-fuel mixture and help improve the combustion rate for compression ignition engines. This paper proposes an approach of adding a throttle body at the intake pipe to control the excess air ratio with reduction of air supply to achieve a better balance between the power, emissions and fuel efficiency at medium and low load of a natural gas dual-fuel diesel engine converted from a conventional diesel engine. Various experiments in both pure diesel and dual-fuel mode under intermediate engine speed are performed with the proposed critical method of excess air ratio control. The experimental results reveal that better excess air ratio is very beneficial for the power output and brake specific energy consumption in dual-fuel combustion under medium and low load conditions. Moreover, the substitution rate can reach as high as 40% under low load conditions with throttle control.

Suggested Citation

  • Yu-Hui Peng & Yu-Peng Huang & Jia-You Tang & Qi-Feng Huang & Yi-Ran Huang, 2018. "Experimental Study on the Effects of Air Supply Control on Combustion and Emissions Performance at Medium and Low Load for a Dual-Fuel Diesel Engine," Energies, MDPI, vol. 11(11), pages 1-14, October.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:11:p:2944-:d:178918
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    References listed on IDEAS

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    Cited by:

    1. Hua Zhou & Hong-Wei Zhao & Yu-Peng Huang & Jian-Hui Wei & Yu-Hui Peng, 2019. "Effects of Injection Timing on Combustion and Emission Performance of Dual-Fuel Diesel Engine under Low to Medium Load Conditions," Energies, MDPI, vol. 12(12), pages 1-14, June.

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