Performance, emissions, and combustion in turbocharged diesel engines: The effect of rapeseed oil biodiesel-diesel blends

Author:

Jayaraman Kamalakannan1,Subramaniam Prabagaran2,Srinivasnaik Mukuloth3,Rajendran Sunilkumar4

Affiliation:

1. Department of Mechanical Engineering, Sri Sairam Institute of Technology, Tambaram, Chennai, Tamil Nadu, India

2. Department of Mechanical Engineering, Karpagam Academy of Higher Education, Coimbatore, Tamil Nadu, India

3. Department of Mechanical Engineering, Chaitanya Deemed to be University, Kishanpura, Hanmakonda, Warangal, Telangana, India

4. Department of Mechanical Engineering, United Institute of Technology, Periyanaickenpalayam, Tamil Nadu, India

Abstract

The need for sustainable alternative fuels is becoming increasingly urgent because to the rapidly expanding demand for automobiles and the growing concerns over the fossil fuel diminution. This research looks into how biodiesel, specifically blends made from rapeseed oil (RSO), can fill this new need. The RSO is created through transesterification, which yields a biodiesel with characteristics that meet ASTM requirements. In a 5.1 kW, single-cylinder, turbocharged Diesel engine (Turbo-DE), the performance, emissions, and combustion (P-E-C) characteristics of several RSO-diesel blends (B20, B40, B60, and B80) are examined and contrasted with those of pure diesel. According to the findings, brake thermal efficiency slightly decreases as biodiesel proportion in the blend rises. The environmental advantages of these blends are offset by a sizable decrease in smoke, CO, and hydrocarbon emissions. On the other hand, greater biodiesel ratios result in higher emissions of NOx and CO2. The thermal efficiencies of the brakes for diesel, B20, B40, B60, and B80 blends were found to be 29.3%, 28.6%, 27.9%, 27.2%, and 26.9%, respectively, in the detailed results. While smoke emissions decreased from 55% (diesel) to 40% (B80), NOx emissions ranged from 1556 ppm (diesel) to 1718 ppm (B80). The B20 blend?s combustion characteristics closely resemble those of diesel, with maximum cylinder pressures and ignition delay of 78 bar, 73 bar, 20%, and 18%, respectively, for diesel and B20. These results offer a good starting point for additional investigation into sustainable alternative fuels by shedding light on the prospective performance and ecological impact of biodiesel-diesel mixes.

Publisher

National Library of Serbia

Subject

Renewable Energy, Sustainability and the Environment

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