Bibliographies thématiques / EGR cooler fouling

Littérature scientifique sur le sujet « EGR cooler fouling »

Auteur : Grafiati
Publié le 14 mars 2023

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Articles de revues sur le sujet "EGR cooler fouling"

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Hoard, John, Mehdi Abarham, Dan Styles, Julia M. Giuliano, C. Scott Sluder et John M. E. Storey. « Diesel EGR Cooler Fouling ». SAE International Journal of Engines 1, no 1 (6 octobre 2008) : 1234–50. http://dx.doi.org/10.4271/2008-01-2475.

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Park, Sangjun, Kyo Lee et Jungsoo Park. « Parametric Study on EGR Cooler Fouling Mechanism Using Model Gas and Light-Duty Diesel Engine Exhaust Gas ». Energies 11, no 11 (15 novembre 2018) : 3161. http://dx.doi.org/10.3390/en11113161.

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Exhaust gas recirculation (EGR) and high-pressure fuel injection are key technologies for reducing diesel engine emissions in the face of reinforced regulations. With the increasing need for advanced EGR technologies to achieve low-temperature combustion and low emission, the adverse etableffects of EGR must be addressed. One of the main problems is fouling of the EGR cooler, which involves the deposition of particulate matter (PM) due to the thermophoretic force between the cooler wall and flow field. A large amount of deposited PM can reduce the effectiveness of the heat exchanger in the EGR cooler and the de-NOx efficiency. In the present study, the effects of the variables that affect EGR cooler fouling are investigated by a comparison of laboratory-based and engine-based experiments. In the laboratory experiment, a soot generator that could readily provide separate control of the variables was used to generate the model EGR gas. Through control of the soot generator, it was possible to perform a parametric study by varying the particle size, the EGR gas flow rate, and the coolant temperature as the dominant parameters. A decrease in these factors caused an increase in the mass of the deposit and a drop in the effectiveness of the heat exchanger, related to fouling of the EGR cooler. In the engine-based experiment, engine-like conditions were provided to analyze real exhaust gas without a soot generator. Different variables were found to induce fouling of the EGR cooler, and the results of the engine-based experiment differed from those of the laboratory experiment. For example, in the engine-based experiment, a decrease in the EGR gas flow rate did not lead to a more pronounced drop in the effectiveness of the heat exchanger because of the increase in the concentration of PM in the EGR gas. This result shows that the conditions of the engine exhaust gas are different from those of the soot generator.
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Gajarlawara, Nilesh, Gaddale Rao et Madhu Murthy. « Experimental investigations of effects of cooling/non cooling of EGR on two level of compression ratio in a common rail diesel engine ». Thermal Science 19, no 6 (2015) : 1995–2002. http://dx.doi.org/10.2298/tsci130804013g.

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EGR cooling is followed for many years and proven as an efficient technique for reducing NOx-PM emissions. EGR cooling helps in emission reduction of NOx and PM. But, it brings associated issues like cooler fouling; misfiring in cold condition, if cooling is not bypassed, during cold start. Also, it increases HC and CO emissions thus leading to increased loading of diesel oxidation catalyst. In the present study, two engine operating points were chosen from EUDC part of modified NEDC cycle for India. The two set of compression ratios were prepared. The NOx-PM along with HC and CO emissions were measured with 18.5CR. The emissions with cooled EGR were taken first which form the base optimization. The cooler was removed from the EGR circuit and same measurements were done. In the third step, the increased NOx due to non-cooled EGR was brought to the original value by increasing the Injection rail pressure and EGR rates simultaneously. In this process, the PM emission was found to be increasing marginally from its optimized value. The same experimentation was repeated for the 16.5 compression ratio. Both the compression ratios exhibit the similar trends of emissions. The magnitude of NOx PM, HC and CO differs for both the compression ratios. In order to meet the baseline optimized NOx-PM emissions with prime objective to get rid of EGR cooler and gain cost saving, reduced compression ratio found to be promising solution. There was marginal increase in CO and HC emission with this approach.
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Kuan, Chih-Kuang, Daniel Styles, Mitchell Bieniek et John Hoard. « An EGR Cooler Fouling Model : Experimental Correlation and Model Uses ». SAE International Journal of Engines 10, no 2 (28 mars 2017) : 541–49. http://dx.doi.org/10.4271/2017-01-0535.

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Hong, Kwang Seok, Kyo Seung Lee, Soonho Song, Kwang Min Chun, Doyoung Chung et Sunki Min. « Parametric study on particle size and SOF effects on EGR cooler fouling ». Atmospheric Environment 45, no 32 (octobre 2011) : 5677–83. http://dx.doi.org/10.1016/j.atmosenv.2011.07.036.

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Han, Zhiqiang, Yipeng Yao, Wei Tian, Xueshun Wu, Gengyuan He et Qi Xia. « Effect of hydrocarbon condensation on fouling and heat exchange efficiency in EGR cooler ». International Journal of Thermal Sciences 184 (février 2023) : 107898. http://dx.doi.org/10.1016/j.ijthermalsci.2022.107898.

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Hong, K. S., J. S. Park et K. S. Lee. « Experimental evaluation of SOF effects on EGR cooler fouling under various flow conditions ». International Journal of Automotive Technology 12, no 6 (24 novembre 2011) : 813–20. http://dx.doi.org/10.1007/s12239-011-0093-x.

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Warey, Alok, Anil Singh Bika, Alberto Vassallo, Sandro Balestrino et Patrick Szymkowicz. « Combination of Pre-EGR Cooler Oxidation Catalyst and Water Vapor Condensation to Mitigate Fouling ». SAE International Journal of Engines 7, no 1 (1 avril 2014) : 21–31. http://dx.doi.org/10.4271/2014-01-0636.

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Han, Taehoon, Hyunki Sul, John Hoard, Chih-Kuang Kuan et Daniel Styles. « The Effects of Temperature, Shear Stress, and Deposit Thickness on EGR Cooler Fouling Removal Mechanism - Part 1 ». SAE International Journal of Materials and Manufacturing 9, no 2 (5 avril 2016) : 236–44. http://dx.doi.org/10.4271/2016-01-0183.

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Sul, Hyunki, Taehoon Han, Mitchell Bieniek, John Hoard, Chih-Kuang Kuan et Daniel Styles. « The Effects of Temperature, Shear Stress, and Deposit Thickness on EGR Cooler Fouling Removal Mechanism - Part 2 ». SAE International Journal of Materials and Manufacturing 9, no 2 (5 avril 2016) : 245–53. http://dx.doi.org/10.4271/2016-01-0186.

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Thèses sur le sujet "EGR cooler fouling"

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MANCARELLA, ALESSANDRO. « Experimental analysis of an early diesel PCCI concept and strategies to limit its application constraints ». Doctoral thesis, Politecnico di Torino, 2020. http://hdl.handle.net/11583/2846611.

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Chapitres de livres sur le sujet "EGR cooler fouling"

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Stauch, R., F. Brotz et J. Supper. « CFD simulation of the fouling process in EGR coolers ». Dans Vehicle Thermal Management Systems Conference and Exhibition (VTMS10), 233–43. Elsevier, 2011. http://dx.doi.org/10.1533/9780857095053.3.233.

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Actes de conférences sur le sujet "EGR cooler fouling"

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Mulenga, Mwila C., Doug K. Chang, Jimi S. Tjong et Daniel Styles. « Diesel EGR Cooler Fouling at Freeway Cruise ». Dans Powertrains, Fuels and Lubricants Meeting. 400 Commonwealth Drive, Warrendale, PA, United States : SAE International, 2009. http://dx.doi.org/10.4271/2009-01-1840.

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Sluder, C. Scott, John M. E. Storey et Michael J. Lance. « Effectiveness Stabilization and Plugging in EGR Cooler Fouling ». Dans SAE 2014 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States : SAE International, 2014. http://dx.doi.org/10.4271/2014-01-0640.

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Li, Haochi, John Hoard, Daniel Styles, Ashwin Salvi, Akshay Kini, Mitchell Bieniek, Weiyu Cao et Nathaniel Erickson. « Visual Study of In-Situ EGR Cooler Fouling Layer Evolution ». Dans ASME 2014 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icef2014-5683.

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Exhaust gas recirculation (EGR) is a major technology to reduce NOx from diesel engines for future emission standards. The implementation of EGR coolers has been a common methodology to provide engine in-cylinder NOx reduction. However, EGR cooler fouling is a common problem. The particulate matter in exhaust tends to form a deposit layer on the wall of the heat exchangers. This effect leads to a reduction of thermal effectiveness of the heat exchangers resulting in insufficient EGR cooling and subsequently higher engine NOx emission. This paper utilized a unique test rig offering visible and infrared optical access to the deposit layer in a simulated diesel EGR cooler to study the evolution of the layer from fresh to heavy deposit. A 460μm thick deposit layer was built during a 37 hour exposure. Time lapse videos were taken provide visual in-situ evidence for the investigation of the layer thickness development and morphology change during the deposition. The layer growth tended to stabilize from about 22 hours of deposition. The shear force exerted by the gas flow moves surface particles of 20μm in diameter or larger. This could contribute to the stabilization phenomenon.
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Yoo, Kwang Hee, John Hoard, Andre Boehman et Matthew Gegich. « Experimental Studies of EGR Cooler Fouling on a GDI Engine ». Dans SAE 2016 World Congress and Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States : SAE International, 2016. http://dx.doi.org/10.4271/2016-01-1090.

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Bika, Anil Singh, Alok Warey, Patrick Szymkowicz, Sandro Balestrino et David Long. « An Investigation of Diesel EGR Cooler Fouling and Effectiveness Recovery ». Dans SAE 2013 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States : SAE International, 2013. http://dx.doi.org/10.4271/2013-01-0533.

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Salvi, Ashwin A., John Hoard, Pavan Karthik Jagarlapudi, Theera Pornphaithoonsakun, Kevin Collao, Dennis N. Assanis, Daniel J. Styles, Mehdi Abarham et Eric W. Curtis. « Optical and Infrared In-Situ Measurements of EGR Cooler Fouling ». Dans SAE 2013 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States : SAE International, 2013. http://dx.doi.org/10.4271/2013-01-1289.

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Lance, Michael J., C. Scott Sluder, Hsin Wang et John M. E. Storey. « Direct Measurement of EGR Cooler Deposit Thermal Properties for Improved Understanding of Cooler Fouling ». Dans SAE World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States : SAE International, 2009. http://dx.doi.org/10.4271/2009-01-1461.

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Chang, Doug K., Ahmed Jawdat Sobh, Jimi S. Tjong, Daniel J. Styles et Joseph J. Szente. « Diesel EGR Cooler Fouling with Ni-Fe-Cr-Al DPF at Freeway Cruise ». Dans SAE 2010 Commercial Vehicle Engineering Congress. 400 Commonwealth Drive, Warrendale, PA, United States : SAE International, 2010. http://dx.doi.org/10.4271/2010-01-1955.

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Abarham, Mehdi, John Hoard, Dennis N. Assanis, Dan Styles, Eric W. Curtis, Nitia Ramesh, C. Scott Sluder et John M. E. Storey. « Numerical Modeling and Experimental Investigations of EGR Cooler Fouling in a Diesel Engine ». Dans SAE World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States : SAE International, 2009. http://dx.doi.org/10.4271/2009-01-1506.

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Arvind, R., Siva Subramanian Ravishankar, Senthil Krishnan Mahendar et Anshul Agarwal. « High Performance EGR Cooler Selection and its Fouling Behavior for a HSDI Diesel Engine ». Dans Symposium on International Automotive Technology 2015. 400 Commonwealth Drive, Warrendale, PA, United States : SAE International, 2015. http://dx.doi.org/10.4271/2015-26-0087.

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Rapports d'organisations sur le sujet "EGR cooler fouling"

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EGR Cooler Fouling Reduction : A New Method for Assessment in Early Engine Development Phase. SAE International, mars 2022. http://dx.doi.org/10.4271/022-01-0589.

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High pressure EGR provides NOx emission reduction even at low exhaust temperatures. To maintain a safe EGR system operation over a required lifetime, the EGR cooler fouling must not exceed an allowable level, even if the engine is operated under worst-case conditions. A reliable fouling simulation model represents a valuable tool in the engine development process, which validates operating and calibration strategies regarding fouling tendency, helping to avoid fouling issues in a late development phase close to series production. Long-chained hydrocarbons in the exhaust gas essentially impact the fouling layer formation. Therefore, a simulation model requires reliable input data especially regarding mass flow of long-chained hydrocarbons transported into the cooler. There is a huge number of different hydrocarbon species in the exhaust gas, but their individual concentration typically is very low, close to the detection limit of standard in-situ measurement equipment like GC-MS. Therefore, a new measurement and analysis approach has been developed, where the exhaust gas is guided to a metal foam collector, in which HC`s are deposited. The probe is then analyzed in a suited thermogravimetrical system (TGA) in nitrogen atmosphere, temperature range 25°C to 650°C. Analyzing the TGA curve, HC concentration data for 6 different boiling temperature ranges are obtained, provided to an adapted 1-d fouling simulation model. Using these data along with further input parameters like cooler geometry, gas temperature, pressure, flow, particle size distribution and coolant temperature, the simulation model has proven as a suitable tool to predict the fouling and identify engine settings for fouling reduction.
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