Improving Of Emissions and Performance of Rice Brawn Oil in Medium Grade Low Heat Rejection Diesel Engine

Öz

Investigations were carried out to evaluate the performance of a medium  grade low heat rejection (LHR) diesel engine with air gap insulated piston and air gap insulated liner  with 3-mm air gap at different operating conditions [normal temperature and pre-heated temperature] of crude rice brawn oil (CRBO) with varied injection pressure and injection timing. Performance parameters of brake thermal efficiency, exhaust gas temperature, volumetric efficiency, coolant load and sound intensity were determined at various values of brake mean effective pressure (BMEP).  Exhaust emissions of smoke and oxides of nitrogen (NOx) were recorded at various values of BMEP. Combustion characteristics at peak load operation of the engine were measured with TDC (top dead centre) encoder, pressure transducer, console and special pressure-crank angle software package.  Conventional engine (CE) showed deteriorated performance, while LHR engine showed improved performance with CRBO operation at recommended injection timing and pressure and the performance of both version of the engine improved with advanced injection timing and at higher injection pressure when compared with CE with pure diesel operation. The optimum injection timing was 32obTDC for CE while it was 30obTDC with LHR engine with CRBO operation. Compatible performance in terms of peak brake thermal efficiency, exhaust gas temperature, coolant load, smoke levels were observed with LHR engine with CRBO operation at recommended injection timing of 27obTDC. (Before top dead centre) in comparison with pure diesel operation

Anahtar Kelimeler

• Crude Rice Brawn Oil; Fuel Performance; Exhaust Emissions; Sound Intensity; Combustion Characteristics.

Kaynakça

1. Pugazhvadivu, M and Jayachandran, K., “ Investigations on the performance and exhaust emissions of a diesel engine using preheated waste frying oil as fuel”, Renewable energy, Vol.30 (14), pp. 2189-2202, 2005.
2. Saravanan, S., Nagarajan, G., Lakshmi NarayanaRao,G. and Sampath, S., “Feasibility study of crude rice brawn oil as a diesel substitute in a DI-CI engine without modifications”, Energy for Sustainable Development, Vol. 11(3), pp.83-92, 2007.
3. Acharya, S.K., Swain,R.K. and Mohanti, M.K., “The use of rice bran oil as a fuel for a small horse-power diesel engine. Energy Sources”, Part A: Recovery, Utilization, and Environmental Effects, Vol. 33(1), pp.80-88, 2009.
4. Venkanna, B.K., VenkataramanaReddy,C., Swati B. and Wadawadagi. , “Performance, emission and combustion characteristics of direct injection diesel engine running on rice bran oil / diesel fuel blend”, International Journal of Chemical and Biological Engineering, Vol. 2(3), pp.131- , 2009.
5. Misra, R.D., Murthy, M.S., “Straight vegetable oils usage in a compression ignition engine-A review”, Renewable and Sustainable Energy Reviews, Vol.14, pp.3005-3013,
6. Murali Krishna, M.V.S., “Performance evaluation of low heat rejection diesel engine with alternate fuels”, PhD Thesis, J. N. T. University, Hyderabad, 2004.
7. SukumarPuhan, Vedaraman, N., Sankaranarayanan,G., Boppana and Bharat Ram, V., “Performance and emission study of Mahua oil (madhucaindica oil) ethyl ester in a 4-stroke natural aspirated direct injection diesel engine”, Renewable Energy, Vol. 8, pp.1269-1278, ShailendraSinha and Avinash
8. “Performance evaluation of a biodiesel (rice bran oil methyl ester) fuelled transportation diesel engine”, SAE. Paper No. 2005- 01-1730, 2005. Kumar Agarawal., JiwakSuryawanshi., “Performance and emission characteristics of CI engine fueled by coconut oil methyl ester”, SAE Paper No. 2006-32-0077, 2006.

9. SukumarPuhanand Nagarajan, G., “NO x reduction in a DI diesel engine using biodiesel as a renewable fuel”, International Journal of Sustainable Energy, Vol.27 (3), pp.143-154, 2008.
10. Jayant Singh, Mishra, T.N., Bhattacharya, T.K. and Singh, M.P., “Emission characteristics of methyl ester of rice bran oil as fuel in compression ignition engine”, International Journal of Chemical and Biological Engineering, Vol.1 (2), pp.62-66, 2008.
11. ShailendraSinha, Avinash Kumar Agarwal , “Rice bran oil methyl ester fuelled medium-duty transportation engine: investigations”, International Journal of Vehicle Design, durability Vol.50 (1), pp.248 - 270, 2009. and combustion
12. Venkanna, B.K., VenkataramanaReddy,C., Swati B. and combustion characteristics of direct injection diesel engine running on rice bran oil / diesel fuel blend”, International Journal of Chemical and Biological Engineering, Vol.2 (3), pp.131-137, 2009.
13. Jindal, S., Nandwana, B.P., Rathore, N.S. and Vashistha,V., “Experimental investigation of the effect of compression ratio and injection pressure in a direct injection diesel engine running on Jatropha methyl ester. Applied Thermal Engineering, Vol.30, pp.442-448, 2010.
14. RidvanArsian., “Emission characteristics of diesel engine using waste cooking oil as biodiesel fuel. African Journal of Bio-Technology, Vol. 10(9), pp.3790-3794,
15. Jaichandar, S. and Annamalai, K., “The status of biodiesel as an alternative fuel for diesel engine- An Overview”, Journal of Sustainable Energy & Environment, Vol. 2, pp.71-75, 2011.
16. Taymaz,I., Cakir, K., Gur,M. and Mimaroglu, A., “Experimental investigation of heat losses in a ceramic cooled diesel engine”, Surface and Coatings Technology, Vol.169, pp.168-170, 2003.
17. Taymaz, I., “An experimental study of energy balance in low heat rejection diesel engine”, Energy, Vol. (2-3), pp.364-371, 2006.
18. Parlak, A., Yasar, H. and Eldogan O., “The effect of thermal barrier coating on a turbocharged Diesel engine performance and exergy potential of the exhaust gas”, Energy Conversion and Management, Vol. 46(3), pp.489- , 2005.
19. Ekrem, B., Tahsin, E. and Muhammet, C., “Effects of thermal barrier coating on gas emissions and performance of a LHR engine with different injection timings and valve adjustments”, Journal of Energy Conversion and Management, Vol. 47, pp.1298-1310,
20. Ciniviz, M., Hasimoglu, C., Sahin, F. and Salman, M. S., “Impact of thermal barrier coating application on the performance and emissions of a turbocharged diesel engine”, Proceedings of The Institution of Mechanical Engineers Part D-Journal of Automobile Engineering, Vol.222 (D12), pp.2447-2455.
21. HanbeyHazar., “Effects of bio-diesel on a low heat loss diesel engine”, Renewable Energy, Vol. 34, pp.1533- , 2009.
22. Modi, A.J. and Gosai, D.C., “Experimental study on thermal barrier coated diesel engine performance with blends of diesel and palm bio-diesel”, SAE International Journal of Fuels and Lubricants, Vol.3 (2), pp.246-259, RajendraPrasath, B., P. Tamilporai, P. and Mohd.Shabir, F., “Analysis of combustion, performance and emission characteristics of low heat rejection engine using biodiesel”, International Journal of Thermal Sciences, Vol.49, pp.2483-2490, 2010.
23. MohamedMusthafa, M., Sivapirakasam, S.P. and Udayakumar.M., “Comparative studies on fly ash coated low heat rejection diesel engine on performance and emission characteristics fueled by rice bran and pongamia methyl ester and their blend with diesel”, Energy, Vol. (5). Pp. 2343-2351, 2011.
24. Rama Mohan, K., Vara Prasad, C.M. and Murali Krishna, M.V.S., “Performance of a low heat rejection diesel engine with air gap insulated piston”, ASME Journal of Engineering for Gas Turbines and Power, Vol.121 (3), pp.530-540, 1999.
25. Krishna Murthy, P.V., “Studies on biodiesel in low heat rejection diesel engine”, PhD Thesis, J.N.T. University, Hyderabad, 2010.