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Modelling for Collective Effect of Muffler Geometric Modifications and Blended Microalgae Fuel Use on Exhaust Performance of a Four-Stroke Diesel Engine: A Computational Fluid Dynamics Approach
ISSN: 0148-7191, e-ISSN: 2688-3627
Published November 21, 2019 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Event: NuGen Summit
Engine performance significantly depends on the effective exhaust of the combustion gases from the muffler. With stricter BSVI norms more efficient measures have to be adopted to reduce the levels of emissions from the exhaust to the atmosphere. Muffler along with reducing the engine noise is intended to control the back pressure as well. Back pressure change has a significant effect on muffler temperature distribution which affects the NOx emission from the exhaust. Many research communications have been made to reduce the exhaust emissions like HC, CO and CO2 from the exhaust by using different generation biofuels as an alternative fuel, yet they have confronted challenges in controlling the NOx content from the exhaust.
This work presents the combined effect of Muffler geometry modifications and blended microalgal fuel on exhaust performance with an aim to reduce NOx emission form a four-stroke engine. In this exertion, the computational fluid dynamics model is developed to analyze the effect of muffler geometry modification on vital exhaust parameters of an engine. The engine is powered with a blend of chlorella microalgae and diesel. The engine used for testing is a four-stroke diesel, water-cooled, SOHC engine. The muffler geometry such as Chambered Elliptic (CE), and Turbo Elliptic (TE) are designed for study. The reference for designing the mufflers in CREO was published literature and company product blueprints. The combined effect of muffler geometry modification and blended microalgal fuel use on back pressure, chamber temperature, pressure and velocity distribution are deliberated.
The result shows that the chambered elliptic muffler using B5 (5% Algal fuel) developed significantly less exhaust temperature, whereas the gas density is more in case of turbo elliptic muffler using B20 (20% Algal fuel). Finally, the velocity is slightly higher in the case of Turbo Elliptic (TE) muffler using B20 blend. Significant decrease in back pressure was noted for B20 blended fuel in case of TE over CE. The exhaust temperature was notably reduced in all B5 blends for all muffler’s geometries created. The work also aims to explore the effect on NOx emissions by analyzing the use of the combined effect of microalgae fuel and muffler geometry modifications on exhaust parameters by controlling the back pressure in the muffler. Almost no research is reported in this  field of work for microalgal fuels which is the objective of this work.
CitationKanchan, S., Choudhary, R., Brahmaiah, C., and Qayoom, S., "Modelling for Collective Effect of Muffler Geometric Modifications and Blended Microalgae Fuel Use on Exhaust Performance of a Four-Stroke Diesel Engine: A Computational Fluid Dynamics Approach," SAE Technical Paper 2019-28-2377, 2019.
Data Sets - Support Documents
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- Carneiro, M.L.N.M. et al. , “Potential of Biofuels from Algae: Comparison with Fossil Fuels, Ethanol and Biodiesel in Europe and Brazil through Life Cycle Assessment (LCA),” Renew. Sustain. Energy Rev. 73(January):632-653, 2017, doi:10.1016/j.rser.2017.01.152.
- Kuberan, J. and Alagumurthi, N. , “Performance and Emission Characteristics of Algae Bio-Fuelled Diesel Engine,” Int. J. Chem. Sci 14(4):2973-2980, 2016.
- Hossain, F.M., Nurun Nabi, M., and Brown, R.J. , “Investigation of Diesel Engine Performance and Exhaust Emissions of Microalgae Fuel Components in a Turbocharged Diesel Engine,” Energy Convers. Manag. 186(January):220-228, 2019, doi:10.1016/j.enconman.2019.02.061.
- Munjal, L. , M, ‘Analysis and Design of Mufflers - An Overview of Research at the Indian Institute of Science’, J. Sound Vib., 211, 425-433, 1998, doi:10.1006/jsvi.1997.1309.
- Yasuda, T., Wu, C., Nakagawa, N., and Nagamura, K. , “Predictions and Experimental Studies of the Tail Pipe Noise of an Automotive Muffler Using a One Dimensional CFD Model,” Appl. Acoust. 71(8):701-707, 2010, doi:10.1016/j.apacoust.2010.03.001.
- Guhan, C.P.O.A., Arthanareeswaran, G., Varadarajan, K.N., and Krishnan, S. , “Exhaust System Muffler Volume Optimization of Light Commercial Vehicle Using CFD Simulation,” Mater. Today Proc. 5(2):8471-8479, 2018, doi:10.1016/j.matpr.2017.11.543.
- Mishra, P.C., Kar, S.K., Mishra, H., and Gupta, A. , “Modeling for Combined Effect of Muffler Geometry Modification and Blended Fuel Use on Exhaust Performance of a Four Stroke Engine: A Computational Fluid Dynamics Approach,” Appl. Therm. Eng. 108(x):1105-1118, 2016, doi:10.1016/j.aej.2013.06.005.
- Mishra, P.C., Kar, S.K., and Mishra, H. , “Effect of Perforation on Exhaust Performance of a Turbo Pipe Type Muffler Using Methanol and Gasoline Blended Fuel: A Step to NOx Control,” J. Clean. Prod. 183(x):869-879, 2018, doi:10.1016/j.jclepro.2018.02.236.
- Wang, Y. et al. , “An Analytic Study of Applying Miller Cycle to Reduce NOx Emission from Petrol Engine,” Appl. Therm. Eng. 27(11-12):1779-1789, 2007, doi:10.1016/j.applthermaleng.2007.01.013.
- Loganathan, M., Manivannan, P.V., and Ramesh, A. , “Investigations on Performance and Emissions of a Two-Stroke SI Engine Fitted with a Manifold Injection System,” Indian J. Eng. Mater. Sci. 13(2):95-102, 2006.
- Mittal, N., Athony, R.L., Bansal, R., and Ramesh Kumar, C. , “Study of Performance and Emission Characteristics of a Partially Coated LHR SI Engine Blended with N-Butanol and Gasoline,” Alexandria Eng. J. 52(3):285-293, 2013, doi:10.1016/j.aej.2013.06.005.
- Bolt, J.A., Bergin, S.P., and Vesper, F.J. , “The Influence of the Exhaust Back Pressure of a Piston Engine on Air Consumption, Performance, and Emissions,” SAE Technical Paper 730195, 1973, doi:10.4271/730195.