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Emission and performance analysis on the effect of exhaust gas recirculation in alcohol-biodiesel aspirated research diesel engine

Environmental Science and Pollution Research volume 25, pages 12641–12647 (2018)Cite this article

Abstract

In this study, the effect of blending pentanol to biodiesel derived from mahua oil on emissions and performance pattern of a diesel engine under exhaust gas recirculation (EGR) mode was examined and compared with diesel. The purpose of this study is to improve the feasibility of employing biofuels as a potential alternative in an unmodified diesel engine. Two pentanol-biodiesel blends denoted as MOBD90P10 and MOBD80P20 which matches to 10 and 20 vol% of pentanol in biodiesel, respectively, were used as fuel in research engine at 10 and 20% EGR rates. Pentanol is chosen as a higher alcohol owing to its improved in-built properties than the other first-generation alcohols such as ethanol or methanol. Experimental results show that the pentanol and biodiesel blends (MOBD90P10 and MOBD80P20) have slightly higher brake thermal efficiency (0.2–0.4%) and lower brake-specific fuel consumption (0.6 to 1.1%) than that of neat biodiesel (MOBD100) at all engine loads. Nitrogen oxide (NOx) emission and smoke emission are reduced by 3.3–3.9 and 5.1–6.4% for pentanol and biodiesel blends compared to neat biodiesel. Introduction of pentanol to biodiesel reduces the unburned hydrocarbon (2.1–3.6%) and carbon monoxide emissions (3.1–4.2%) considerably. In addition, at 20% EGR rate, smoke, NOX emissions, and BTE drop by 7.8, 5.1, and 4.4% respectively. However, CO, HC emissions, and BSFC increased by 2.1, 2.8, and 3.8%, respectively, when compared to 0% EGR rate.

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Affiliations

  1. Department of Mechanical Engineering, Vel Tech Rangarajan Dr.Sagunthala R&D Institute of Science and Technology, Chennai, India

    Arulprakasajothi Mahalingam & Yuvarajan Devarajan

  2. Department of Mechanical Engineering, Panimalar Engineering College, Chennai, India

    Dinesh Babu Munuswamy

  3. Department of Mechanical Engineering, SRM University, Chennai, India

    Santhanakrishnan Radhakrishnan

Authors
  1. Arulprakasajothi Mahalingam
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  2. Dinesh Babu Munuswamy
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  3. Yuvarajan Devarajan
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  4. Santhanakrishnan Radhakrishnan
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Corresponding author

Correspondence to Yuvarajan Devarajan.

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Responsible editor: Philippe Garrigues

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Mahalingam, A., Munuswamy, D.B., Devarajan, Y. et al. Emission and performance analysis on the effect of exhaust gas recirculation in alcohol-biodiesel aspirated research diesel engine. Environ Sci Pollut Res 25, 12641–12647 (2018). https://doi.org/10.1007/s11356-018-1522-4

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  • DOI: https://doi.org/10.1007/s11356-018-1522-4

Keywords

  • Pentanol
  • Biodiesel
  • Emissions
  • Exhaust gas recirculation
  • Diesel engine