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Reduction in Pollutant Emissions in an “Off-Road” DI Diesel Engine by Means of Exhaust Gas Recirculation
Technical Paper
2011-32-0610
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English
Abstract
The aim of this work was to obtain a reduction in pollutant emissions, in particular for NOx and Soot, in an “Off-Road” DI Diesel Engine, equipped with a common rail injection system, by means of exhaust gas recirculation (EGR). First, an engine simulation was performed using a one-dimensional code, and the model was then calibrated with experimental results obtained from a previous research work conducted on bench tests.
Thanks to the engine model, specific emissions were then determined in all conditions, that is, in “eight modes” pertaining to engine loads and speeds. Both the injection advance and EGR amount were changed for all of these conditions in order to obtain the best compromise between fuel consumption and emissions and to respect standard regulations. The investigation was performed using both the Wiebe and a more complex combustion models; this latter allows in fact to determine the soot emission through the Nagle-Strickland model. As the standard emission limits were not respected, in spite of the presence of EGR at partload, a pilot injection was also introduced into the simulation at full load, for maximum torque and power conditions, in order to reduce soot emissions. The presence of the pilot injection at full load allowed satisfactory results to be obtained for the emission limits and for fuel consumption, as some experimental tests have shown.
Topic
Citation
Nuccio, P. and Bertone, M., "Reduction in Pollutant Emissions in an “Off-Road” DI Diesel Engine by Means of Exhaust Gas Recirculation," SAE Technical Paper 2011-32-0610, 2011.Also In
References
- LANGRIDGE, S. FESSLER, H. Strategies for High E.G.R. Rates in a Diesel Engine SAE International
- SCHUBIGER, R. BERTOLA, A. BOULOUCHOS, K. Influence of EGR on Combustion and Exhaust Emissions of Heavy Duty DI-Diesel Engines Equipped with Common-Rail Injection Systems SAE international, paper n. 2001-01-3497
- LANGRIDGE, S. FESSLER, H. Strategies for High EGR Rates in a Diesel Engine SAE international, paper n. 2002-01-0961
- MAJEWSKI, W. A. KHAIR, M. K. Diesel Emissions and Their Control SAE International, Book 2006-12-01
- CHATTERJEE, SOUGATO CONWAY, RAY VISWANATHAN, SATISH NOx and PM Control from Heavy Duty Diesel Engines Using a Combination of Low Pressure EGR and Continuously Regenerating Diesel Particulate Filter SAE International
- INTERNATIONAL ORGANIZZATION FOR STANDARDIZATION Document ISO TC 70/SC 8N. 85,parte 4 th 1992
- GAMMA TECHNOLOGIES GT-POWER and GT-POST User's manual
- STOLZ, A. FLEISCHER, K. KNECHT, W. NIES, J. STRÄHLE, R. Development of EGR Coolers for Truck and Passenger Car Application SAE international, paper n. 2001-01-1748
- PARK, SANG-KI CHOI, KAP-SEUNG WANG, HAK-MIN KIM, HYUNG-MAN LEE, DAE-HEE Heat Exchange Efficiency Characteristics of EGR Cooler with Stack-Type or Shell &Tube-Type SAE international, paper n. 2007-01-3446
- MILLO, F. PAUTASSO, E. A DoE Analysis on the Effects of Compression Ratio, Injection Timing, Injector Nozzle Hole Size and Number on Performance and Emissions in a Diesel Marine Engine SAE International, paper n. 2007-01-0670
- BADAMI, M. MALLAMO, F. MILLO, F. NUCCIO, P. Effects of Multi-injection in pollutant emissions in an “off-road” DI-Common-rail Diesel Engine Proceedings of 57 th Congress of Thermotechnic Italian Association Pisa, Italy September 17 20 2002
- NAGLE, J. S. STRICKLAND-CONSTABLE, R. F. Oxidation of carbon between 1000-2000°C Proceedings of the Fifth Carbon Conference 1962 1 154 164 Pergamon Oxford