Researchers Optimize Diesel Engine Performance with Biofuel

Strategic Insights -

Researchers have made significant strides in optimizing diesel engine performance by incorporating biofuels, particularly ethanol and biodiesel. According to a study published in Scientific Reports, the team analyzed the influence of fuel injection pressure, fuel percentage, and engine load on the efficiency and atmospheric emissions of a direct injection diesel engine. Their findings reveal that by adjusting these parameters, they were able to reduce brake specific fuel consumption (BSFC) by 7.5%, carbon monoxide (CO) emissions by 15%, and smoke density by 18% when compared to traditional diesel performance.

Key Takeaways:

  • The study utilized the Taguchi L9 orthogonal array to evaluate variations in fuel injection pressures (220, 240, 260 bar), ethanol and waste cooking oil biodiesel fractions (10%, 20%, 30% by volume), and load circumstances (20%, 50%, 80%).
  • The desirability function established the ideal parameters as 220 bar fuel injection pressure, 40% ethanol-biodiesel blend, and 80% engine load, achieving a balance between performance and emissions.
  • The study demonstrated the efficacy of the Taguchi technique and its desired function in the optimization of diesel engines, promoting environmental sustainability and operational efficiency.
  • The research was conducted by Nikhil Janardan Rathod, Chaithanya Kalangi, Kolli Sudha Madhuri, Sudheer Kumar, Vikas Pandey, Manoj Sahni, and Ernesto Leon-Castro from the Department of Mechanical Engineering at Vikrant University, Gwalior, India.
  • The study was published in Scientific Reports, a journal published by Nature Portfolio.

Statistics:

  • Brake specific fuel consumption (BSFC) was reduced by 7.5% under ideal conditions.
  • Carbon monoxide (CO) emissions decreased by 15% compared to traditional diesel performance.
  • Smoke density was reduced by 18% when compared to traditional diesel performance.
  • Nitrogen oxides (NO) emissions rose by 12% under ideal conditions.
  • Brake thermal efficiency (BTE) reached its maximum value of 32% under optimal conditions.
  • The Taguchi technique and grey relational approach were used to analyze the influence of fuel injection pressure, fuel percentage, and engine load on the efficiency and atmospheric emissions of a direct injection diesel engine.

Sources:

  • Rathod, N. J., Kalangi, C., Madhuri, K. S., Kumar, S., Pandey, V., Sahni, M., ... & Leon-Castro, E. (2025). Performance optimization of ethanol blends in diesel model using Taguchi and grey relational approach. Scientific Reports, 15(1), 36048.