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Particle Number Reduction in Automotive Exhausts by Controlled Grouping
Technical Paper
2018-01-0330
ISSN: 0148-7191, e-ISSN: 2688-3627
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Abstract
Particulate emissions from internal combustion engines is a well-known issue with direct implications on air quality and human health. Recently there is an increased concern about the high number of ultrafine particles emitted from modern engines. Here we explore a concept for grouping these particles, reducing their total number and shifting the relative size distribution towards fewer larger particles. Particles having a non-zero relaxation time may be manipulated to yield regions of high particle concentration, accommodating agglomeration, when introduced into an oscillating flow field. The oscillating flow field is given by simple periodic geometrical changes of the exhaust pipe itself. It is discussed how the shape of these geometrical changes and also the engine pulses effect the grouping behavior for different size particles, including when Brownian motion becomes relevant. Simulations are performed using a bespoke 1D-model sufficient for the basic parameter studies of the concept given here.
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Majal, G., Karlsson, M., Mihaescu, M., and Katoshevski, D., "Particle Number Reduction in Automotive Exhausts by Controlled Grouping," SAE Technical Paper 2018-01-0330, 2018, https://doi.org/10.4271/2018-01-0330.Data Sets - Support Documents
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References
- Springer , G. and Patterson , D. Engine Emissions Pollutant Formation and Measurement Verlag USA Springer 1973 10.1007/978-1-4684-1983-2
- Kittelson , D. Engines and nanoparticles Journal of Aerosol Science 29 575 588 1998 10.1016/S0021-8502(97)10037-4
- Regulation (EC) No 595/2009 of the European Parliament and of the Council 2009 2009 2017
- Brook , R. , Rajagopalan , S. , Pope , C. , Brook , J. et al. Particulate Matter Air Pollution and Cardiovascular Disease: An Update to the Scientific Statement from the American Heart Association Circulation 121 2331 2378 2010 10.1161/CIR.0b013e3181dbece1
- Pieters , N. , Koppen , G. , Poppel , M. , Prins , S. et al. Blood Pressure and Same-Day Exposure to Air Pollution at School: Associations with Nano-Sized to Coarse PM in Children Environmental Health Perspectives 123 737 742 2015 10.1289/ehp.1408121
- Maher , B. , Ahmed , I. , Karloukovski , V. , MacLaren , D. et al. Magnetite Pollution Nanoparticles in the Human Brain PNAS 113 10797 10801 2016 10.1073/pnas.1605941113
- Ibald-Mulli , A. , Wichmann , H.E. , Kreyling , W. , and Peters , A. Epidemiological Evidence on Health Effects of Ultrafine Particles Journal of Aerosol Medicine 15 189 201 2004 10.1089/089426802320282310
- Honour , S. , Bell , J. , Ashenden , T. , Cape , J. , and Power , S.A. Responses of Herbaceous Plants to Urban Air Pollution: Effects on Growth, Phenology and Leaf Surface Characteristics Environmental Pollution 157 1279 1286 2009 10.1016/j.envpol.2008.11.049
- Sydbom , A. , Blomberg , A. , Parnia , S. , Stenfors , N. et al. Health Effects of Diesel Exhaust Emissions European Respiratory Journal 17 733 746 2001
- Yeh , H. , Phalen , R. , and Raabe , O. Factors Influencing the Deposition of Inhaled Particles Environmental Health Perspectives 15 147 156 1976
- Esmen , N.A. and Corn , M. Residence Time of Particles in Urban Air Atmospheric Environment (1967) 5 571 578 1971 10.1016/0004-6981(71)90113-2
- Harrison , R. M. Airborne particulate matter in the united kingdom The University of Birmingham Edgbaston, England 1996
- Yang , J. , Stewart , M. , Maupin , G. , Herling , D. , and Zelenyuk , A. Single Wall Diesel Particulate Filter (DPF) Filtration Efficiency Studies Using Laboratory Generated Particles Chemical Engineering Science 64 1625 1634 2009 10.1016/j.ces.2008.12.011
- Adler , J. Ceramic diesel particulate filters International Journal of Applied Ceramic Technology 2 429 439 2005 10.1111/j.1744-7402.2005.02044.x
- Katoshevski , D. , Dodin , Z. , and Ziskind , G. Aerosol Clustering in Oscillating Flows: Mathematical Analysis Atomization and Sprays 15 401 412 2005 10.1615/AtomizSpr.v15.i4.30
- Katoshevski , D. , Shakked , T. , Sazhin , S. , Crua , C. , and Heikal , M.R. Grouping and Trapping of Evaporating Droplets in an Oscillating Gas Flow International Journal of Heat and Fluid Flow 29 415 426 2008 10.1016/j.ijheatfluidflow.2007.10.003
- Katoshevski , D. and Seinfeld , J. Analytical-Numerical Solution of the Multicomponent Aerosol General Dynamic Equation-with Coagulation Aerosol Science Technology 27 550 556 1997 10.1080/02786829708965494
- Katoshevski , D. , Shakked , T. , and Sazhin , S.S. Particle Grouping in Standing and Moving Wave Velocity Fields International Journal of Engineering Systems Modelling and Simulation 2 177 182 2010
- Katoshevski , D. , Ruzal , M. , Shakked , T. , and Sher , E. Particle Grouping a New Method for Reducing Emission of Submicron Particles from Diesel Engines Fuel 89 2411 2416 2010 10.1016/j.fuel.2010.04.001
- Ruzal-Mendelevich , M. , Katoshevski , D. , and Sher , E. Controlling Nanoparticles Emission with Particle-Grouping Exhaust-Pipe Fuel 166 116 123 2016 10.1016/j.fuel.2015.10.113
- Rudinger , G. Fundamentals of Gas Particle Flow Elsevier Scientific Publishing Company 1980 978-0-444-41853-1
- Crowe , C. , Schwarzkopf , J. , Sommerfeld , M. , and Tsuji , Y. Multiphase Flows with Droplets and Particles CRC Press 1998 9781439840504
- Virtanen , A. , Ristimäki , J. , Marjamäki , M. , Vaaraslahti , K. et al. Effective Density of Diesel Exhaust Particles as a Function of Size SAE Technical Paper 2002-01-0056 2002 10.4271/2002-01-0056
- Hjelmfelt , A.T. and Mockros , L.F. Motion of Discrete Particles in a Turbulent Fluid Applied Scientific Research 16 149 161 1966 10.1007/BF00384062
- Seinfeld , J.H. and Pandis , S.N. Atmospheric Chemistry and Physics - From Air Pollution to Climate Change John Wiley & Sons , 1973 978-1-118-94740-1
- Li , A. and Ahmadi , G. Deposition of Aerosols on Surfaces in a Turbulent Channel Flow International Journal of Engineering Science 31 435 451 1993 10.1016/0020-7225(93)90017-O
- Definitive Equations for the Fluid Resistance of Spheres Proceedings of the Physical Society 57 259 270 1945 10.1088/0959-5309/57/4/301
- Marshall J.S. and Li S. Adhesive Particle Flow Cambridge University Press 2014 9781107032071
- Zhang , Z. , Abom , M. , Boden , H. , Karlsson , M. , and Katoshevski , D. Particle Number Reduction in Automotive Exhausts Using Acoustic Metamaterials SAE Int. J. Engines 10 1566 1572 2017 10.4271/2017-01-0909