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Comparison of Different EGR Solutions
Technical Paper
2008-01-0206
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper compares 4 different EGR systems by means of simulation in GT-Power. The demands of optimum massive EGR and fresh air rates were based on experimental results. The experimental data were used to calibrate the model and ROHR, in particular. The main aim was to investigate the influence of pumping work on engine and vehicle fuel consumption (thus CO2 production) in different EGR layouts using optimum VG turbine control. These EGR systems differ in the source of pressure drop between the exhaust and intake pipes. Firstly, the engine settings were optimized under steady operation - BSFC was minimized while taking into account both the required EGR rate and fresh air mass flow. Secondly, transient simulations (NEDC cycle) were carried out - a full engine model was used to obtain detailed information on important parameters. The study shows the necessity to use natural pressure differences or renewable pressure losses if reasonable fuel consumption is to be achieved.
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Authors
- Oldřich Vítek - Czech Technical University in Prague Josef Božek Research Center
- Jan Macek - Czech Technical University in Prague Josef Božek Research Center
- Miloš Polášek - Czech Technical University in Prague Josef Božek Research Center
- Stefan Schmerbeck - Volkswagen AG
- Thomas Kammerdiener - AVL Graz, AVL Fuel Systems
Citation
Vítek, O., Macek, J., Polášek, M., Schmerbeck, S. et al., "Comparison of Different EGR Solutions," SAE Technical Paper 2008-01-0206, 2008, https://doi.org/10.4271/2008-01-0206.Also In
References
- GT-Drive User's Manual GT-Suite version 6.0 Gamma Technologies Inc. 2003
- GT-Power User's Manual GT-Suite version 6.0 Gamma Technologies Inc. March 2003
- Alriksson, M. Rente, T. Denbratt, I. Low Soot, Low NO x in a Heavy Duty Diesel Engine Using High Levels of EGR SAE Technical Paper Series March 2005 Paper 2005-01-3836
- Ammann, M. Fekete, N. P. Guzzella, L. Glattfelder, A. H. Model-Based Control of the VGT and EGR in a Turbocharged Common-Rail Diesel Engine: Theory and Passenger Car Implementation SAE Technical Paper Series March 2003 Paper 2003-01-0357
- Chen, S. Flynn, P. Development of a Single Cylinder Compression Ignition Research Engine SAE Technical Paper Series Paper 650733
- Hausberg, T. Gjirja, S. Denbratt, I. Engstrom, J. Visualization of EGR Influence on Diesel Combustion with Long Ignition Delay in a Heavy-Duty Engine SAE Technical Paper Series March 2004 Paper 2004-01-2947
- Heywood, J. B. Internal Combustion Engine Fundamentals USA McGraw-Hill 1988 0-07-028637-X
- Jacobs, T. Assanis, D. Filipi, Z. The Impact of Exhaust Gas Recirculation on Performance and Emissions of a Heavy-Duty Diesel Engine SAE Technical Paper Series March 2003 Paper 2003-01-1068
- Langdridge, S. Fessler, H. Strategies for High EGR Rates in a Diesel Engine SAE Technical Paper Series March 2002 Paper 2002-01-0961
- Lundqvist, U. Smedler, G. Stalhammar, P. A Comparison Between Different EGR Systems for HD Diesel Engines and Their Effect on Performance and Emissions SAE Technical Paper Series March 2000 Paper 2000-01-0226
- Macek, J. Kliment, V. Gas Turbines, Turbochargers and Fans CTU Prague 1992 - 1996 80-01-00840-1 In Czech
- Taylor, C. F. The Internal Combustion Engine in Theory and Practise 1 Thermodynamics, Fluid Flow, Performance The M.I.T. Press 1985 0-262-70026-3 Secon
- Wolfer, H. Der Zündverzug im Dieselmotor. VDI-Forschungsheft 392 1938
- Woschni, G. A Universally Applicable Equation for the Instantaneous Heat Transfer Coefficient in the Internal Combustion Engine SAE Transactions 76 3065 1967
- Woschni, G. Anisitis, F. Eine Methode zur Vorausberechnung des Brennverlaufs mittelschnellaufender Dieselmotoren bei geänderten Betriebs-bediengungen. Motortechnischezeitschrift (MTZ) 34 4 106 115 1973