A Technical Survey on the Impact of Exhaust Gas Recirculation and Multifuel Blends on Diesel Engine Performance and Emission Characteristics

Authors

Medhat Elkelawy Prof. Dr, Eng., Mechanical Power Engineering Departments, Faculty of Engineering, Tanta University, Tanta, EgyptFollow
Hagar Alm-Eldin Bastawissi Prof. Dr. Eng., Department of Mechanical Power Engineering, Faculty of Engineering, Tanta University, Tanta, EgyptFollow
E. A. El Shenawy Prof. Dr., Mechanical Power Engineering Departments, Faculty of Engineering, Tanta University, Tanta, EgyptFollow
Mustafa Mohamed Ouda Eng., Department of Mechanical Power Engineering, Faculty of Engineering, Tanta University, Tanta, EgyptFollow

Abstract

The increasing demand for fossil fuels poses significant challenges as their reserves gradually deplete over time. Biodiesel is considered one of the most effective alternative fuels to mitigate these issues. Current research focuses on comparing engine performance parameters when blending biodiesel with fossil fuels in Compression Ignition (C.I.) engines. The study demonstrates a comparison of the exhaust emissions produced by biodiesel fuel. In comparison to diesel, biodiesel generally exhibits lower heating value, higher density, increased fuel consumption, and elevated nitrogen oxide levels. To address these challenges, various additives are mixed and blended with biodiesel to meet international fuel standards. These additives include oxygen additives, cetane improvers, growth enhancers, and antioxidants, which contribute to producing high-quality biodiesel fuel. By incorporating these additives, engine performance can be enhanced in terms of thermal efficiency, brake-specific fuel consumption, and exhaust gas temperatures. Furthermore, biodiesel usage leads to lower emissions of greenhouse gases such as hydrocarbons and carbon dioxide compared to conventional fuels. Notably, blending additives with biodiesel and diesel fuel has been shown to reduce nitrogen oxide (NOx) emissions. Additionally, this research highlights aspects related to engine vibrations and the efficiency coefficient.

Recommended Citation

Elkelawy, Medhat Prof. Dr, Eng.; Bastawissi, Hagar Alm-Eldin Prof. Dr. Eng.; El Shenawy, E. A. Prof. Dr.; and Ouda, Mustafa Mohamed Eng. (2024) "A Technical Survey on the Impact of Exhaust Gas Recirculation and Multifuel Blends on Diesel Engine Performance and Emission Characteristics," Journal of Engineering Research: Vol. 8: Iss. 3, Article 19.
Available at: https://digitalcommons.aaru.edu.jo/erjeng/vol8/iss3/19