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Performance evaluation of waste fried vegetable oil in a medium grade low heat rejection diesel engine | ||
| Journal of Computational & Applied Research in Mechanical Engineering (JCARME) | ||
| مقاله 1، دوره 4، شماره 2، شهریور 2015، صفحه 101-102 اصل مقاله (1.73 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22061/jcarme.2015.269 | ||
| نویسندگان | ||
| M. V. S. Murali Krishna* 1؛ R. P. Chowdary1؛ T. Kishen Kumar Reddy2؛ P. V. K. Murthy3 | ||
| 1bMechanical Engineering Department, Chaitanya Bharathi Institute of Technology, Gandipet, Hyderabad-500 075, Telengana State, India | ||
| 2Mechanical Engineering Department, College of Engineering, J.N.T. University, Hyderabad -500 085, Telengana State, India | ||
| 3Jayapraksh Narayan Group of Institutions , Mahabubnagar-509001, Telengana State, India | ||
| تاریخ دریافت: 01 مهر 1391، تاریخ بازنگری: 27 اردیبهشت 1393، تاریخ پذیرش: 02 تیر 1393 | ||
| چکیده | ||
| Investigations were carried out to evaluate the performance of direct injection diesel engine with medium grade low heat rejection (LHR) combustion chamber and 3 mm air gap insulated piston, 3 mm air gap insulated liner, and ceramic coated cylinder head [ceramic coating with the thickness of 500 µ was made on the inside portion of the cylinder head].The engine had different operating conditions [normal temperature and pre–heated temperature] of crude waste fried vegetable oil (WFVO) which was collected from restaurants, hotels, etc. with varied injector opening pressure and injection timing. Performance parameters and exhaust emissions were evaluated at various values of brake mean effective pressure of the engine, while combustion parameters were determined at full load operation of the engine using special pressure–crank angle software package. Comparative studies were performed between vegetable oil operation and diesel operation in the engine with both versions of the combustion chamber with varied injection timing and injector opening pressure. Conventional engine (CE) showed deteriorated performance, while the engine with medium grade LHR combustion chamber had improved performance with waste fried vegetable oil operation at the recommended injection timing and pressure. Performance of both versions of the combustion chamber improved with advanced injection timing and at higher injector opening pressure compared with CE with pure diesel operation. The optimum injection timing was 32o bTDC (before top dead centre) with conventional engine, while it was 30o bTDC for the engine with LHR combustion chamber and vegetable oil operation. Compared with pure diesel operation in the conventional engine, at manufacturer's recommended injection timing of 27o bTDC, peak brake thermal efficiency increased by 9% at full load operation, brake specific energy consumption decreased by 2%, volumetric efficiency decreased by 13%, smoke levels decreased by 10%, and nitrogen oxide (NOx) levels increased by 44% with waste fried vegetable oil operation in the engine with LHR combustion chamber. | ||
| کلیدواژه‌ها | ||
| Vegetable oil؛ LHR؛ Combustion chamber؛ Fuel؛ performance؛ Exhaust emissions؛ Combustion characteristics | ||
| مراجع | ||
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[1] M.V.S. Murali Krishna, P.V.K. Murthy, P. Pujari Pawan and Basavaraju, “Potential of a medium grade low heat rejection diesel engine with crude tobacco seed oil, (IMECE-2013-62262). In: Proceedings of ASME 2013 mechanical engineering congress and exposition, (IMECE-2013-62262); (2013).
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[5] N. Venkateswara Rao, M.V.S. Murali Krishna, and P.V.K. Murthy, “Comparativ studies on exhaust emissions and combustion characteristics of tobacco seed oil in crude form and biodiesel form in direct injection diesel engine”, Int J Mech & Prod Eng. Res & Deve Vol.3, No.4, pp.125-138, (2013).
[6] N. Venkateswara Rao, M.V.S. Murali Krishna, and P.V.K. Murthy, “Comparative studies on performance of tobacco seed oil in crude form and biodiesel form in direct injection diesel engine”, Int J Aut Eng Res & Dev , Vol.3, No.4, pp. 57-72, (2013).
[7] D. Srikanth, M.V.S. Murali Krishna, P. Ushasri, and P.V.K. Krishna Murthy, Performance evaluation of a diesel engine fuelled with cotton seed oil in crude form and biodiesel form”, Int J Acad Res Multidiscip, Vol.1, No.9, pp. 329–349, (2013).
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[11] M.V.S. Murali Krishna, R.P. Chowdary, T.K.K. Reddy, and P.V.K. Murthy, “Performance evaluation of waste fried vegetable oil in la low grade low heat rejection diesel engine”. International Journal of Research in Mechanical Engineering and Technology, Vol. 2, No.2, pp. 35-43,(2012).
[12] Ch. Kesava Reddy, M.V.S. Murali Krishna, P.V.K. Murthy, and T. Ratna Reddy, “Performance evaluation of a low grade low heat rejection diesel engine with crude Pongamia oil”. International Scholarly Research Network (ISRN) Renewable Energy, Article ID 489605, pp. 1-10, (2012).
[13] T. Ratna Reddy, M.V.S. Murali Krishna, Ch. Kesava Reddy, and P.V.K. Murthy, “Studies on performance of ceramic coated diesel engine fuelled with crude mohr oil” International Journal of Engineering Sciences, Vol. 2, No.4, pp. 119-129, (2012).
[14] K. Rama Mohan, C.M. Vara Prasad and M.V.S. Murali Krishna, “Performance of a low heat rejection diesel engine with air gap insulated piston”, ASME Journal of Engineering for Gas Turbines and Power, Vol, 121, No.3, pp. 530-540,(1999).
[15] M.V.S. Murali Krishna, Performance evaluation of low heat rejection diesel engine with alternate fuels. PhD Thesis, J. N. T. University, Hyderabad, (2004).
[16] Ch. Chennakesava Reddy, M.V.S. Murali Krishna, P.V.K. Murthy, and T. Ratna Reddy, Potential of low heat rejection diesel engine with crude pongamia oil”. International Journal of Modern Engineering Research,Vol,1, No.1, pp. 210-224, (2011).
[17] N. Janardhan, M.V.S. Murali Krishna, P. Ushasri, and P.V.K. Murthy “Potential medium low heat rejection diesel engine with crude jatropha oil”. International Journal of Automotive Engineering and Technologies, Vol. 1, No. 2, pp. 1-16, (2012)
[18] M.V.S. Murali Krishna, D. Durga Prasada Rao, B. Anjeneya Prasad, and P.V.K. Murthy, “ Improving of emissions and performance of rice brawn oil in medium grade low heat rejection diesel engine”. International Journal of Renewable Energy Research, Vol.3, No. 1, pp. 98-108, (2013).
[19] R.P. Chowdary, M.V.S. Murali Krishna, T.K.K. Reddy, and P.V.K. Murthy, “Performance evaluation of a high grade low heat rejection diesel engine with waste fried vegetable oil”., International Journal of Engg & Technology, Vol. 2, No.3, pp. 440-450, (2012)
[20] Ch. Kesava Reddy, M.V.S. Murali Krishna, P.V.K. Murthy, and T. Ratna Reddy, “Performance evaluation of a high grade low heat rejection diesel engine with crude pongamia oil”, International Journal of Engineering Research and Applications, Vol. 2. No. 5, pp. 1505-1516, (2012)
[21] N. Janardhan, N., P. Ushasri , M.V.S. Murali Krishna, and P.V.K. Murthy, “Performance of biodiesel in low heat rejection diesel engine with catalytic converter”, International Journal of Engineering and Advanced Technology, Vol. 2, No.2, pp. 97-109, (2012). | ||
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