Analyzing the efficacy and exhausts of punnai biodiesel-ethanol blends in nanocoated ci engines

Original scientific paper

Authors

  • Narendranathan Srinivasan Kasinathan Department of Mechanical Engineering, Agni College of Technology, Chennai-600130. Tamil Nadu, India
  • Karthikeyan Subramanian Department of Mechatronics Engineering, Agni College of Technology, Chennai-600130, Tamil Nadu, India
  • Purushothaman Panneerselvam Department of Mechanical Engineering, Agni College of Technology, Chennai-600130. Tamil Nadu, India
  • Srinivasan Tirupathi Department of Mechatronics Engineering, Agni College of Technology, Chennai-600130, Tamil Nadu, India

DOI:

https://doi.org/10.2298/CICEQ241009015S

Keywords:

Punnai biodiesel, ethanol, nano- coating, diesel engine, efficacy, exhausts

Abstract

This study experimentally investigates the performance, emission, and combustion characteristics of a nano-coated compression ignition (CI) engine fueled by Punnai biodiesel blends with varying proportions of ethanol. The nano-coating was applied to the engine's cylinder liner and piston crown to enhance heat transfer and reduce friction. The biodiesel blends were prepared by mixing Punnai oil with diesel fuel in various ratios (B20, and B30). Ethanol was added to each blend at 5% and 15% concentrations. This research desires to improve the operational efficiency of an engine which runs on a diesel, through the utilisation of a piston coated with a thermal barrier, specifically tailored for punnai methyl ester blends. Thermal barrier coatings widely prioritise zirconia due to its exceptional thermal insulation properties. B20E15 has a brake thermal efficiency that exceeds that of diesel by around 3%. Similarly, B20E05 and B20E15 demonstrate fuel consumption reductions of approximately 3.8% and 16.3%, respectively. On average, the B20 blends exhibited a reduction in CO and HC emissions are 5% and 9%. A comparative analysis clearly demonstrated that nanocoated CI engines enhance performance and diminish emissions without any major modifications.

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11.06.2025

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How to Cite

Analyzing the efficacy and exhausts of punnai biodiesel-ethanol blends in nanocoated ci engines: Original scientific paper. (2025). Chemical Industry & Chemical Engineering Quarterly. https://doi.org/10.2298/CICEQ241009015S

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