This content is not included in your SAE MOBILUS subscription, or you are not logged in.
An Investigation of Diesel EGR Cooler Fouling and Effectiveness Recovery
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 08, 2013 by SAE International in United States
Annotation ability available
Diesel engine developers are continually striving to reduce harmful NOx emissions through various calibration and hardware strategies. One strategy being implemented in production Diesel engines involves utilizing cooled exhaust gas recirculation (EGR). Although there is a significant NOx reduction potential by utilizing cooled EGR, there are also several issues associated with it, such as EGR cooler fouling and a reduction in cooler effectiveness that can occur over time. The exact cause of these issues and many others related to cooler fouling are not clearly understood. One such unanswered issue or phenomenon that has been observed in both field tested and lab tested EGR coolers is that of a recovery in EGR cooler effectiveness after a shutdown or after cycling between various conditions. The purpose of the current work was to show that an effectiveness restoration or effectiveness recovery can occur in an EGR cooler that has been exposed to soot-laden exhaust gases, through changes in operating conditions, with specific emphasis on exposure to high condensation conditions. The work was conducted on a multi-cylinder diesel engine using a shell and tube EGR cooler, with independent control over temperature, flow rate, and EGR soot/HC concentrations. The effectiveness recovery demonstrated in this work was likely caused by morphological changes of the soot layer, rather than actual cleaning or removal of the soot layer.
CitationBika, A., Warey, A., Szymkowicz, P., Balestrino, S. et al., "An Investigation of Diesel EGR Cooler Fouling and Effectiveness Recovery," SAE Technical Paper 2013-01-0533, 2013, https://doi.org/10.4271/2013-01-0533.
- Abarham , M. , Hoard , J. , Assanis , D. , Styles , D. et al. Review of Soot Deposition and Removal Mechanisms in EGR Coolers SAE Int. J. Fuels Lubr. 3 1 690 704 2010 10.4271/2010-01-1211
- Abarham , M. , Chafekar , T. , Hoard , J. , Styles , D. et al. A Visualization Test Setup for Investigation of Water-Deposit Interaction in a Surrogate Rectangular Cooler Exposed to Diesel Exhaust Flow SAE Technical Paper 2012-01-0364 2012 10.4271/2012-01-0364
- Bika , A. , Warey , A. , Long , D. , Balestrino , S. , & Szymkowicz , P. 2012 Characterization of Soot Deposition and Particle Nucleation in Exhaust Gas Recirculation Coolers Aerosol Science and Technology 46 12 2012
- Abd-Elhady , M. S. , Zornek , T. , Malayeri , M. R. , Balestrino , S. , Szymkowicz , P. G. , & Müller-Steinhagen , H. 2011 Influence of Gas Velocity on Particulate Fouling of Exhaust Gas Recirculation Coolers International Journal of Heat and Mass Transfer 54 4 838 846
- Hoard , J. , Abarham , M. , Styles , D. , Giuliano , J. et al. Diesel EGR Cooler Fouling SAE Int. J. Engines 1 1 1234 1250 2009 10.4271/2008-01-2475
- Hong , K. S. , Lee K. S. , Song , S. , Chun , K. M. , Chung , D. , & Min , S. 2011 Parametric Study on particle Size and SOF Effects on EGR Cooler Fouling Atmospheric Environment 45 5677 5683
- Kalghatgi , G. Combustion Chamber Deposit Flaking Studies Using a Road Test Procedure SAE Technical Paper 2002-01-2833 2002 10.4271/2002-01-2833
- Lance , M. , Sluder , C. , Wang , H. , and Storey , J. Direct Measurement of EGR Cooler Deposit Thermal Properties for Improved Understanding of Cooler Fouling SAE Technical Paper 2009-01-1461 2009 10.4271/2009-01-1461
- Lance , M. , Sluder , S. , Lewis , S. , and Storey , J. Characterization of Field-Aged EGR Cooler Deposits SAE Int. J. Engines 3 2 126 136 2010 10.4271/2010-01-2091
- Messerer , A. , Niessner , R. , & Poschl , U. 2004 Miniature Pipe Bundle Heat Exhcanger for Thermophoretic Deposition of Ultrafine Soot Aerosol Particles at High Flow Velocities Aerosol Science and Technology 38 456 466
- Sluder , C. , Storey , J. , Lewis , S. , Styles , D. et al. Hydrocarbons and Particulate Matter in EGR Cooler Deposits: Effects of Gas Flow Rate, Coolant Temperature, and Oxidation Catalyst SAE Int. J. Engines 1 1 1196 1204 2009 10.4271/2008-01-2467
- Sluder , C. , Storey , J. , and Youngquist , A. ULSD and B20 Hydrocarbon Impacts on EGR Cooler Performance and Degradation SAE Technical Paper 2009-01-2802 2009 10.4271/2009-01-2802
- Warey , A. , Balestrino S. , Szymkowicz , P. , Malayeri , M. R. A One-Dimensional Model for Particulate Deposition and Hydrocarbon Condensation in Exhaust Gas Recirculation Coolers Aerosol Science and Technology 46 2 198 213 2012
- Warey , A. Bika , A. , Long , D. , Balestrino , S. , and Szymkowicz , P. Visualization and Analysis of Condensation in Exhaust Gas Recirculation Coolers SAE Technical Paper 2013-01-0540 2013 10.4271/2013-01-0540