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Experimental Study of Ignition Delay of Homogeneous Supercritical Fuel Sprays of Dieseline Blend in Constant Volume Combustion Chamber

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Advances in IC Engines and Combustion Technology (NCICEC 2019)

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Abstract

İn present experimental work, supercritical (SC) fuel spray combustion technology is studied under diesel engine-like operating conditions inside a constant volume combustion chamber. İgnition delay (ID) of SC sprays is measured, analyzed, and compared with conventional diesel sprays under similar operating conditions. İt is found that ID of SC sprays is significantly smaller than liquid diesel sprays at all operating conditions. At typical normal diesel engine operating conditions of 300 bar injection pressure (IP) and 40 bar cylinder air pressure (CP), substantial percentage reduction in ID of SC sprays occurs, which is above 55%. It is further found that SC spray combustion mainly occurs as homogeneous hot air combustion rather than hot surface combustion/ignition. Significant reduction in ID of SC spray as compared to diesel spray would cause a drastic reduction in NOx and homogeneous single-phase combustion of SC spray would consequently result in a substantial reduction in particulate matter (PM) formation. The best combination of experimental conditions in the present study at which maximum percentage reduction in ID occurs (nearly 85.83%) is found to be HST = 673 K, CP = 20 bar, IP = 300 bar. SC spray combustion is a single-phase homogeneous, faster, and cleaner combustion technology for next-generation diesel engines.

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Acknowledgements

İ would like to express my deep gratitude to Professor S. S. Alam for his generous support and guidance during the whole work. This work was supported by TEQIP-II Grant, MHRD, Govt. of India.

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Authors and Affiliations

  1. Department of Mechanical Engineering, AMU, Aligarh, India

    Sanaur Rehman & Shah Shahood Alam

Authors
  1. Sanaur Rehman
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  2. Shah Shahood Alam
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Correspondence to Sanaur Rehman .

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Editors and Affiliations

  1. Department of Mechanical Engineering, University of Maryland, College Park, MD, USA

    Ashwani K. Gupta

  2. LLC, CSTI Associates, Yardley, PA, USA

    Hukam C. Mongia

  3. Department of Mechanical Engineering, National Institute of Technology Kurukshetra, Kurukshetra, Haryana, India

    Pankaj Chandna

  4. Department of Mechanical Engineering, National Institute of Technology Kurukshetra, Kurukshetra, Haryana, India

    Gulshan Sachdeva

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Rehman, S., Alam, S.S. (2021). Experimental Study of Ignition Delay of Homogeneous Supercritical Fuel Sprays of Dieseline Blend in Constant Volume Combustion Chamber. In: Gupta, A., Mongia, H., Chandna, P., Sachdeva, G. (eds) Advances in IC Engines and Combustion Technology. NCICEC 2019. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-5996-9_48

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  • DOI: https://doi.org/10.1007/978-981-15-5996-9_48

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-15-5995-2

  • Online ISBN: 978-981-15-5996-9

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