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Spray characteristics of diesel and derivatives in direct injection diesel engines with varying injection pressures

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Abstract

The combustion and emission characteristics of inedible oils and their derivatives are quite different from those of mineral diesel; in particular, inedible oils and their derivatives present higher molecular, relative density, and vaporization characteristics. These properties exert great impacts on the fuel spray as well as the interactions of this spray with air in the combustion chamber. Thus, examining spray characteristics, including spray cone angle, spray tip penetration, spray area, and fuel atomization, is necessary. The spray characteristics of fuel mainly depend on the fuel injection pressure, density, viscosity, ambient pressure, and temperature. Among these parameters, fuel injection pressure significantly affects the spray structure. In this study, experiments were conducted using diesel, jatropha oil methyl ester, karanja oil methyl ester, and two biodiesel blended fuels (JB20 and KB20)] as fuels in a diesel engine with different injection pressures. Optical techniques for spray visualization and image processing are very efficient tools for analyzing the spray parameters of the tested fuels. Macroscopic spray properties, such as spray tip penetration, spray cone angle, and spray area, were acquired from images captured by a high-speed video camera. The Sauter mean diameter and spray volume of all of the tested fuels were also estimated. Experimental results showed that the biodiesel blends demonstrate features different from those of diesel fuel. KB100 presented the highest spray tip penetration and spray area, followed by JB100 JB20, KB20 and diesel. Diesel fuel showed the best spray parameters, followed by JB20, KB20, KB100 and JB100. The tested fuels exhibited better spray characteristics at higher injection pressures than at lower ones.

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Authors and Affiliations

  1. Sri Venkateswara College of Engineering, Post Bag No. 1, Pennalur, 602 117, Sriperumbudur, Tamilnadu, India

    Raghu Palani & K. Pitchandi

  2. SSN College of Engineering, OMR, 603 110, Kalavakkam, Tamil Nadu, India

    Nallusamy Nallusamy

Authors
  1. Raghu Palani
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  2. Nallusamy Nallusamy
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  3. K. Pitchandi
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Correspondence to Raghu Palani.

Additional information

Recommended by Associate Editor Jeong Park

Raghu Palani received his B.E. degree in Mechanical Engineering from Madras University, India, in 2001 and his M.E. degree in Internal Combustion Engineering from Anna University, India, in 2005. He is a Doctoral student of the Department of Mechanical Engineering, Anna University, India. He is also currently an assistant professor at the Mechanical Engineering Department, Sri Venkateswara College of Engineering, Tamilnadu, India. Palani has 14 years of teaching experience in Mechanical Engineering and has published 12 papers in national and international conferences, as well as 8 papers in international journals. His research interests include alternate fuels for I.C. engines, the spray characteristics of alternate fuels and CFD.

Nallusamy Nallusamy received his B.E. degree in Mechanical Engineering from Bharathiar University, India, in 1992, M.E. Degree in Thermal Engineering from Annamalai University, India, in 1995 and Ph.D. in Energy Engineering, Anna University, Chennai, India, in 2007. Nallusamy has over 20 years of experience in the teaching profession and is currently working as a professor in the Department of Mechanical Engineering, SSN College of Engineering, Chennai, India. He has published more than 40 technical papers in national and international conferences, as well 21 technical papers in international journals. His fields of research include thermal energy storage, solar energy collection and utilization, and alternate fuels.

K. Pitchandi received his B.E. degree in Mechanical Engineering in 1993 at Madras University and his M.E degree in Thermal Power Equipment in 1994 at NIT, Trichy, India. He obtained his Ph.D. in the field of energy conservation from Anna University Chennai in 2009. He is currently a Professor/Head Mechanical Engineering in Sri Venkateswara College of Engineering, Tamilnadu, India. Pitchandi has 4 years of research experience and 15 years of teaching experience. He has published 10 papers each in international journals and international conferences. His fields of interest include design of heat exchangers, thermodynamic optimization, and fluid flow analysis in heat exchangers.

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Palani, R., Nallusamy, N. & Pitchandi, K. Spray characteristics of diesel and derivatives in direct injection diesel engines with varying injection pressures. J Mech Sci Technol 29, 4465–4471 (2015). https://doi.org/10.1007/s12206-015-0945-9

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  • DOI: https://doi.org/10.1007/s12206-015-0945-9

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