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Effects of the Intake Charge Distribution in HSDI Engines
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 12, 2010 by SAE International in United States
Annotation ability available
Despite the development in NOx aftertreatment for Diesel engines, EGR is a cost-effective solution to fulfill current and future emission regulations. There is a wide bibliography discussing the global effects of EGR on combustion and emissions. However, little has been published concerning the effects of the unsuitable EGR and air distribution among cylinders. Since current HSDI engines operate with EGR rates as high as 50% the effect of the unequal EGR distribution becomes important. In addition, cylinder-to-cylinder charge dispersion becomes a critical aspect on the control of low temperature combustion systems.
In concordance with the aspects outlined before, the aim of this paper is to study the effects of the EGR cylinder to cylinder distribution on the engine performance and emissions. To cope with this objective, experiments have been conducted in a HSDI engine with two different EGR systems. On the one hand, a High Pressure EGR system which produces high EGR cylinder-to-cylinder dispersion. On the other hand, a Low Pressure EGR system that allows a perfect EGR-air mixing before gas enters the cylinders. In the first part of the paper, the EGR distribution capabilities of each EGR system are determined. Then, comparing the engine emissions with both EGR architectures, the effects of differences in EGR rate and intake temperature of each cylinder are discussed.
CitationPayri, F., Lujan, J., Climent, H., and Pla, B., "Effects of the Intake Charge Distribution in HSDI Engines," SAE Technical Paper 2010-01-1119, 2010, https://doi.org/10.4271/2010-01-1119.
- Lapuerta M Hernandez JJ Gimenez F Evaluation of exhaust gas recirculation as a technique for reducing diesel engine NOx emissions Proc. Inst. Mech. Eng. Part D-J. Automob. Eng. 214 85 93 2000
- Ladommatos N Abdelhalim S and Zhao H The effects of exhaust gas recirculation on diesel combustion and emissions International Journal of Engine Research 1 1 2000
- Luján JM Pla B Moroz S Bourgoin G Effect of Low Pressure EGR on gas exchange processes and turbocharging of a HSDI engine Proceedings of the THIESEL 2008 Conference on Thermo- and Fluid Dynamic Processes in Diesel Engines 429 442 2008
- Luján JM Galindo J Serrano JR Pla B A methodology to identify the intake charge cylinder-to-cylinder distribution in turbocharged direct injection Diesel engines Meas. Sci. Technol. 19 2008
- Page, V.J. Garner, C.P. Hargrave, G.K. Versteeg, H.K. “Development of a Validated CFD Process for the Analysis of Inlet Manifold Flows with EGR,” SAE Technical Paper 2002-01-0071 2002
- Siewert, R.M. Krieger, R.B. Huebler, M.S. Baruah, P.C. et al. “Modifying an Intake Manifold to Improve Cylinder-to-Cylinder EGR Distribution in a DI Diesel Engine Using Combined CFD and Engine Experiments,” SAE Technical Paper 2001-01-3685 2001
- William, J. Dupont, A. Bazile, R. Marchal, M. “Study of Geometrical Parameter Influence on Air/EGR Mixing,” SAE Technical Paper 2003-01-1796 2003
- Beatrice C Avolio G Bertoli C Del Giacomo N Guido C Migliaccio M Critical aspects on the control in the low temperature combustion systems for high performance DI Diesel engines Oil & Gas Science and Technology 62 471 782 2007
- Heywood JB “Internal Combustion Engine Fundamentals” Mc Graw Hill 1988
- Tree DR Svensson KI Soot processes in compression ignition engines Progress in Energy and Combustion Science 33 272 309 2007
- Beatrice, C. Avolio, G. Del Giacomo, N. Guido, C et al. “The Effect of “Clean and Cold” EGR on the Improvement of Low Temperature Combustion Performance in a Single Cylinder Research Diesel Engine,” SAE Technical Paper 2008-01-0650 2008