Browse > Article
http://dx.doi.org/10.6108/KSPE.2015.19.2.081

Improvement of Fuel Economy in a Diesel Engine by Application of Low Pressure EGR System  

Kim, Yongrae (Department of Engine Research, Korea Institute of Machinery and Materials)
Lee, Yonggyu (Department of Engine Research, Korea Institute of Machinery and Materials)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.19, no.2, 2015 , pp. 81-87 More about this Journal
Abstract
LP(low pressure)-EGR system was investigated to evaluate its potential on fuel economy improvement and NOx emission reduction in a diesel engine. A diesel engine was tested for the evaluation of LP-EGR system at both of steady-state and transient test. For a transient test, control logic for LP-EGR valve operation was developed and a NEDC mode test was conducted by using a vehicle status simulation test. The steady-state results showed that LP-EGR system can reduce more NOx emission or fuel consumption comparing to the conventional HP(high pressure)-EGR. From the NEDC mode test, this LP-EGR system showed a possibility to improve fuel economy without a penalty of emissions.
Keywords
LP-EGR; HP-EGR; Diesel Engine; Fuel Economy; NOx;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Neely, G., Sasaki, S., Huang, Y., Leet, J. and Stewart, D., "New Diesel Emission Control Strategy to Meet US Tier 2 Emissions Regulations," SAE 2005 World Congress & Exhibition, Detroit, M.I., U.S.A., SAE 2005-01-1091, April 2005.
2 Langridge, S. and Fessler, H., "Strategies for High EGR Rates in a Diesel Engine," SAE 2002 World Congress & Exhibition, Detroit, M.I., U.S.A., SAE 2002-01-0961, Mar. 2002.
3 Chatterjee, S., Conway, R., Viswanathan, S., Blomquist, M., Klusener, B. and Andersson, S., "NOx and PM Control from Heavy Duty Diesel Engines Using a Combination of Low Pressure EGR and Continuously Regenerating Diesel Particulate Filter," SAE 2003 World Congress & Exhibition, Detroit, M.I., U.S.A., SAE 2003-01-0048, Mar. 2003.
4 Andersson, S., Akerlund, C. and Blomquist, M., "Low Pressure EGR Calibration Strategies for Reliable Diesel Particulate Filter Regeneration on HDD Engines," SAE 2002 World Congress & Exhibition, Detroit, M.I., U.S.A., SAE 2002-01-2780, Oct. 2002.
5 Heywood, J.B., Internal Combustion Engine Fundamentals, McGraw-Hill Book Company, New York, N.Y., U.S.A., 1988.
6 Vigild, C.W., "The Internal Combustion Engine - Modelling, Estimation and Control Issues," Thesis of Ph. D., Technical University of Denmark, 2002.
7 Guzzella, L. and Onder, C.H., Introduction to Modeling and Control of Internal Combustion Engine Systems, Springer, New York, N.Y., U.S.A., 2004.