Advanced SearchSearch Tips
Effect of EGR on power and exhaust emissions in diesel engine
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Effect of EGR on power and exhaust emissions in diesel engine
Song, Kyu-keun;
  PDF(new window)
Diesel engines are widely used due to superior power and fuel consumption, however there are many challenges in exhaust gas management. Exhaust gas recirculation (EGR) is the most effective technique for reducing mono-nitrogen oxide (NOx) emissions in a diesel engine, in comparison with other catalytic technologies. In addition, the technology has a number of advantages in terms of economic efficiency and implementation. In this study, the effects on the power and exhaust characteristics of diesel engines equipped with EGR systems were investigated. It was found that as the EGR rate increased, horsepower expressed as IHP and BHP decreased. The net effect of the application of EGR was measured at various engine speeds. EGR technology caused decreases in BHP of around 9% during low engine speed and 3.5% during high engine speed. Additionally, NOx emissions reduced as the EGR rate increased, and increased as engine speed increased. However, smoke emissions increased as the EGR rate increased, and decreased as engine speed increased. The optimum operating conditions and ERG rate to simultaneously achieve minimum NOx and smoke emissions were investigate. It was found that as the EGR rate increased, optimal operating speed for minimal NOx and smoke also increased. Keywords: Diesel engine, Exhaust gas recirculation, Power perfomance, Emission characteristics, NOx, Smoke
Diesel engine;Exhaust gas recirculation;Power perfomance;Emission characteristics;NOx;Smoke;
 Cited by
J. B. heywood, Internal Combustion Engine Fundamentals, McGraw-Hill, 1988.

F. J. Liotta and D. M, Montalvo, "The Effect of Oxygenated Fuels on Emissions from a Modern Heavy-Duty Diesel Engine," SAE 932734, 1993.

J. Y. Heo, J. P. Cha, S. H. Yoon, and C. S. Lee, "Effect of multiple injection on combustion and emission character direct injection diesel engine," Proceedings of the Korea Society of Automotive Engineers Spring Conference, pp. 37-42, 2010.

G. H. Lim, J. H. Park, Y. Choi, S. Y. Lee, and Y. M. Kim, "Comparison of combustion characteristics on the basis of the dilution ratio in diesel engines with LPL EGR," Transactions of the Korean Society of Mechanical Engineers B, vol. 35, no. 5, pp. 525-531, 2011.

K. Sihling and G. Woschni, "Experimental investigation of the instantaneous heat transfer in cylinder of a high speed diesel engine," SAE Paper No. 790833, 1979.

Wilson, Pellicciltti, "Emission Study of a Single-Cylinder Diesel Engine," SAE740213, 1974.

J. K, Lim and S. C. Cho, "Effect of fuel injection on exhaust emissions of biodiesel blend oil in diesel engine," Korean Society of Mechanicl Engineers, vol. 36, no. 5, pp. 603-608, 2012.