Influence of the compression ratio on the performance and emission characteristics of a vcr diesel engine fuelled with alcohol blended fuels

Abstract

The  present  study  is  an  experimental  study  that  investigates  the  performance  and  emission characteristics of a variable compression ratio (VCR) diesel engine when the engine is fuelled with diesel, biodiesel, and small amount of alcohol blended fuels. The experimental study was evaluated with a single cylinder, water cooled, multi fuel VCR diesel test engine. The experimental results showed that increasing compression ratio improves performance characteristics such as brake thermal efficiency and specific fuel consumption of the test engine for all test fuels. However, increasing compression ratio caused to increase of NOx and CO2 emissions. Blending alcohol with diesel fuel showed a slight decrement in the means of brake thermal efficiency and thus elevated specific fuel consumption values. The maximum increment of specific fuel consumption  was  measured  as  0,34%  for  diesel-alcohol  blends.  But,  blending  alcohols  with biodiesel fuel improved performance characteristics of the engine compared to diesel fuel up to 2,65%. Blending biodiesel with alcohols showed improvement in the means of NOx emissions up to 6,01%.

Keywords

• Compression ratio,Alcohol,Biodiesel,Performance

References

1. Ozcanli, M. (2015). Castor-oil methyl ester/butanol/diesel fuel blend as an alternative for compression ignition engines. Journal of Biotechnology, vol. 208, p. S32. 10.1016/j.jbiotec.2015.06.089
2. Serin, H., Ozcanli, M., Gokce, M.K., and Tuccar, G. (2013). Biodiesel Production From Tea Seed (Camellia Sinensis) Oil and its Blends With Diesel Fuel. International Journal of Green Energy, vol. 10, no. 4, pp. 370-377. 10.1080/15435075.2012.655354
3. Uludamar, E., Yıldızhan, Ş., Aydın, K., and Özcanlı, M. (2016). Vibration, noise and exhaust emissions analyses of an unmodified compression ignition engine fuelled with low sulphur diesel and biodiesel blends with hydrogen addition. International Journal of Hydrogen Energy, vol. 41, no. 26, pp. 11481-11490. 10.1016/j.ijhydene.2016.03.179
4. Uludamar, E. et al. (2017). Evaluation of vibration characteristics of a hydroxyl (HHO) gas generator installed diesel engine fuelled with different diesel–biodiesel blends. International Journal of Hydrogen Energy, https://doi.org/10.1016/j.ijhydene.2017.01.192
5. Ozcanli, M., Akar, M.A., Calik, A., and Serin, H. (2017). Using HHO (Hydroxy) and hydrogen enriched castor oil biodiesel in compression ignition engine. International Journal of Hydrogen Energy, 10.1016/j.ijhydene.2017.01.091
6. Serin, H., Ozgur, C., Ozcanli, M., Aydin, K., and Ozgur, T. (2013). Preparation of fuels by cracking of different plastics and their blends with diesel fuel. Current Opinion in Biotechnology, vol. 24, p. S44. 10.1016/j.copbio.2013.05.097
7. Tosun, E., Yilmaz, A.C., Ozcanli, M., and Aydin, K. (2014). Determination of effects of various alcohol additions into peanut methyl ester on performance and emission characteristics of a compression ignition engine. Fuel, vol. 126, pp. 38-43. 10.1016/j.fuel.2014.02.037
8. Yasin, M.H.m., Mamat, R., Yusop, A.F., Rahim, R., Aziz, A., and Shah, L.A. (2013). Fuel Physical Characteristics of Biodiesel Blend Fuels with Alcohol as Additives. Procedia Engineering, vol. 53, pp. 701-706. 10.1016/j.proeng.2013.02.091

9. Imran, A., Varman, M., Masjuki, H.H., and Kalam, M.A. (2013). Review on alcohol fumigation on diesel engine: A viable alternative dual fuel technology for satisfactory engine performance and reduction of environment concerning emission. Renewable and Sustainable Energy Reviews, vol. 26, pp. 739-751. 10.1016/j.rser.2013.05.070
10. Datta Bharadwaz, Y., Govinda Rao, B., Dharma Rao, V., and Anusha, C. (2016). Improvement of biodiesel methanol blends performance in a variable compression ratio engine using response surface methodology. Alexandria Engineering Journal, vol. 55, no. 2, pp. 1201-1209. 10.1016/j.aej.2016.04.006
11. Keskin, A., Yaşar, A., Reşitoğlu, İ., Akar, M.A., and Sugözü, İ. (2013). The Influence of Diesel Fuel-biodiesel-ethanol-butanol Blends on the Performance and Emission Characteristics of a Diesel Engine. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, vol. 35, no. 19, pp. 1873-1881. 10.1080/15567036.2010.529568
12. Masum, B.M., Kalam, M.A., Masjuki, H.H., Palash, S.M., and Fattah, I.M.R. (2014). Performance and emission analysis of a multi cylinder gasoline engine operating at different alcohol–gasoline blends. RSC Advances, vol. 4, no. 53, pp. 27898-27904. 10.1039/c4ra04580g Akar, M.A. (2016). Performance and emission characteristics of compression ignition engine operating with false flax biodiesel and butanol blends. Advances in Mechanical Engineering, vol. 8, no. 2, pp. 1-7. 10.1177/1687814016632677
13. Balki, M.K., Sayin, C., and Canakci, M. (2014). The effect of different alcohol fuels on the performance, emission and combustion characteristics of a gasoline engine. Fuel, vol. 115, pp. 901-906. 10.1016/j.fuel.2012.09.020
14. Imdadul, H.K. et al. (2016). Higher alcohol–biodiesel–diesel blends: An approach for improving the performance, emission, and combustion of a light-duty diesel engine. Energy Conversion and Management, vol. 111, pp. 174-185. 10.1016/j.enconman.2015.12.066
15. Tsai, J.-H. et al. (2014). Emissions from a generator fueled by blends of diesel, biodiesel, acetone, and isopropyl alcohol: Analyses of emitted PM, particulate carbon, and PAHs. Science of The Total Environment, vol. 466, pp. 195-202. 10.1016/j.scitotenv.2013.07.025
16. Lattimore, T., Herreros, J.M., Xu, H., and Shuai, S. (2016). Investigation of compression ratio and fuel effect on combustion and PM emissions in a DISI engine. Fuel, vol. 169, pp. 68-78. 10.1016/j.fuel.2015.10.044
17. Bora, B.J. and Saha, U.K. (2016). Experimental evaluation of a rice bran biodiesel – biogas run dual fuel diesel engine at varying compression ratios. Renewable Energy, vol. 87, pp. 782-790. 10.1016/j.renene.2015.11.002
18. Chavan, S.B., Kumbhar, R.R., Kumar, A., and Sharma, Y.C. (2015). Study of Biodiesel Blends on Emission and Performance Characterization of a Variable Compression Ratio Engine. Energy & Fuels, vol. 29, no. 7, pp. 4393-4398. 10.1021/acs.energyfuels.5b00742
19. Huang, Z. et al. (2005). Performance and Emissions of a Compression Ignition Engine Fueled with Diesel/Oxygenate Blends for Various Fuel Delivery Advance Angles. Energy & Fuels, vol. 19, no. 2, pp. 403-410. 10.1021/ef049855d
20. Sayin, C. and Gumus, M. (2011). Impact of compression ratio and injection parameters on the performance and emissions of a DI diesel engine fueled with biodiesel-blended diesel fuel. Applied Thermal Engineering, vol. 31, no. 16, pp. 3182-3188. 10.1016/j.applthermaleng.2011.05.044