Effect of ethanol addition on the performance and exhaust emissions of a spark ignition engine
DOI:
https://doi.org/10.15282/jmes.11.2.2017.14.0248Keywords:
Ethanol; gasoline-ethanol fuel; spark ignition engine; engine performance; emissions.Abstract
The depletion of fossil fuel availability and increase of pollution due to the use of fossil fuels have forced the researcher to find a renewable-friendly energy source. One of the potential replacements is alcohol based fuel. This present study investigated experimentally the influence of ethanol addition on the engine performance, in terms of effective power, brake specific fuel consumption, and exhaust emissions of a gasoline spark ignition engine. The engine used in the research was a 4-stroke single cylinder, indirect injection system with engine capacity of 124.8cc, and compression ratio of 9.3:1. The experiments were conducted at eight different engine speeds ranging from 1500 rpm to 5000 rpm and 10 types of gasoline-ethanol mixtures (E10 to E100). The result showed that the effective power decreased with the increase of ethanol in the fuel blends for all variations of engine speed. Leaning effect of ethanol addition in the blend fuel caused the CO emissions to decrease greatly as well as the HC emissions. On average, gasoline engine fueled by pure ethanol reduced the CO emission level by more than 60 % in volume compared to the engine with gasoline fuel. On average, the maximum power of the engine with fuel blend was obtained at engine speed of around 2500 to 3000 rpm. For higher ethanol content on the fuel blend, the optimum shift to the lower engine speed. It can be concluded that engine operation with ethanol content on the fuel performed better in the lower engine speed.
References
Wang C, Janssen A, Prakash A, Cracknell R, Xu H. Splash blended ethanol in a spark ignition engine–effect of ron, octane sensitivity and charge cooling. Fuel. 2017;196:21-31.
KR Patil ST. The effect of injection on the performance and emmision of direct injection ci engine running diethyl ether-diesel blends. International Journal of Automotive and Mechanical Engineering. 2016;13:2773-87.
Akasyah M, Mamat R, Abdullah A, Aziz A, Yassin H. Effect of ambient temperature on diesel-engine combustion characteristics operating with alcohol fuel. International Journal of Automotive and Mechanical Engineering. 2015;11:2373-82.
Phuangwongtrakul S, Wechsatol W, Sethaput T, Suktang K, Wongwises S. Experimental study on sparking ignition engine performance for optimal mixing ratio of ethanol–gasoline blended fuels. Applied Thermal Engineering. 2016;10:869-79.
Awad OI, Mamat R, Ali OM, Sidik N, Yusaf T, Kadirgama K, et al. Alcohol and ether as alternative fuels in spark ignition engine: A review. Renewable and Sustainable Energy Reviews. 2017.
Bhaskar K, Sendilvelan S, Muthu V, Aravindraj S. Performance and emission characteristics of compression ignition engine using methyl ester blends of jatropha and fish oil. Journal of Mechanical Engineering and Scienes. 2016;10:1994-2007.
Rashid AK, Mansor A, Radzi M, Ghopa WAW, Harun Z, Mahmood WMFW. An experimental study of the performance and emissions of spark ignition gasoline engine. International Journal of Automotive and Mechanical Engineering. 2016;13:3540-54.
Saifuddin N, Refal H, Kumaran P. Performance and emission characteristics of micro gas turbine engine fuelled with bioethanol-diesel-biodiesel blends. International Journal of Automotive and Mechanical Engineering. 2017;14:4030-49.
Balki MK, Sayin C, Canakci M. The effect of different alcohol fuels on the performance, emission and combustion characteristics of a gasoline engine. Fuel. 2014;115:901-6.
Turner D, Xu H, Cracknell RF, Natarajan V, Chen X. Combustion performance of bio-ethanol at various blend ratios in a gasoline direct injection engine. Fuel. 2011;90:1999-2006.
Yüksel F, Yüksel B. The use of ethanol–gasoline blend as a fuel in an si engine. Renewable Energy. 2004;29:1181-91.
Hund G, Laverty K, Mahy H, Szabo C, Woods L. 200 proof transportation: The potential for ethanol as an alternative fuel. University of Washington, Global Commercialization of Environmental Technologies. 2003.
Al-Hasan M. Effect of ethanol–unleaded gasoline blends on engine performance and exhaust emission. Journal of Energy Conversion and Management. 2003;44:1547-61.
Bata RM, Elord A, Rice RW. Emissions from ic engines fueled with alcohol–gasoline blends: A literature review. Transactions of the ASME. 1989;111:424-31.
Park C, Choi Y, Kim C, Oh S, Lim G, Moriyoshi Y. Performance and exhaust emission characteristics of a spark ignition engine using ethanol and ethanol-reformed gas. Fuel. 2010;89:2118-25.
Al-Farayedhi AA, Al-Dawood A, Gandhidasan P. Effects of blending crude ethanol with unleaded gasoline on exhaust emissions of SI engine. SAE paper No. 20-01-2857; 2000.
Wallner T, Miers SA. Combustion behavior of gasoline and gasoline/ethanol blends in a modern direct-injection 4-cylinder engine. SAE paper 2008-01-0077; 2008.
Koç M, Sekmen Y, Topgül T, Yücesu HS. The effects of ethanol–unleaded gasoline blends on engine performance and exhaust emissions in a spark-ignition engine. Renewable Energy. 2009;34:2101-6.
Balki MK, Sayin C. The effect of compression ratio on the performance, emissions and combustion of an si (spark ignition) engine fueled with pure ethanol, methanol and unleaded gasoline. Energy. 2014;71:194-201.
Costa RC, Sodré JR. Compression ratio effects on an ethanol/gasoline fuelled engine performance. Applied Thermal Engineering. 2011;31:278-83.
Pulkrabek W, Willard,. Engineering fundamental of the combustion engine. New Jersey: Pearson Persntice Hll; 2004.
Barakat Y, Awad EN, Ibrahim V. Fuel consumption of gasoline ethanol blends at different engine rotational speeds. Egyptian Journal of Petroleum. 2016;25:309-15.
Heywood JB. Internal combustion engine fundamentals: Mcgraw-Hill New York; 1988.
Elfasakhany A, Mahrous A-F. Performance and emissions assessment of n-butanol–methanol–gasoline blends as a fuel in spark-ignition engines. Alexandria Engineering Journal. 2016;55:3015-24.
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