Prediction of Emission and Performance of a Variable Compression Ratio Engine with Gasoline/Ethanol Blend Using Response Surface Methodology

Document Type : Research Article


1 Department of Automobile Engineering, Velammal Engineering College, Chennai, INDIA

2 Department of Mechanical Engineering, Velammal Engineering College, Chennai, INDIA

3 Department of Mechanical Engineering, Easwari Engineering College, Chennai, INDIA


In this study, the effects of ethanol-butanol/gasoline blends (EB0%, EB10%, and EB20%) on spark ignition engine performance and emissions were investigated for the different compression ratios (6.0:1, 8.0:1, and 10.0:1), and different load conditions (2kW, 4kW, and 6kW). Based on the experimental results, the response surface methodology has been used to develop a model and to estimate the outputs of brake thermal efficiency, brake-specific energy consumption, carbon monoxide, hydrocarbon, and oxides of nitrogen. The optimum operating conditions, 9.970% of the ethanol-butanol blend, 10.0:1 compression ratio, and 6 kW of engine load were obtained through the desirability approach of response surface methodology. Brake thermal efficiency, brake-specific energy consumption, carbon monoxide, hydrocarbon, and oxides of nitrogen at optimum conditions are 35.041 %, 0.493 kg/kWh, 0.217 %, 213.575 ppm, and 1263.787 ppm, respectively. Moreover, the developed models have higher R2 values near 1, and the optimum responses are obtained with a higher desirability value of 0.768. Ethanol-butanol/gasoline blends improved the brake thermal efficiency, carbon monoxide, and hydrocarbons. Whereas it increased the brake-specific energy consumption and oxides of nitrogen.  In addition, the validation test results illustrate that the acceptable error rate between optimized values obtained through the desirability approach of response surface methodology and experimental values is below 7%. 


Main Subjects

[1] Rajakrishnamoorthy P., Karthikeyan D., Saravanan C.G., Emission Reduction Technique Applied in SI Engines Exhaust by Using Zsm5 Zeolite as Catalysts Synthesized from Coal Fly Ash, Mater. Today Proc., 22: 499–506 (2020).
[2] Yusoff M.N.A.M., Zulkifli N.W.M., Masjuki H.H., Harith M.H., Syahir A.Z., Khuong L.S., et al., Comparative Assessment of Ethanol and Isobutanol Addition in Gasoline on Engine Performance and Exhaust Emissions, J. Clean Prod.,190: 483–95 (2018).
[3] Abdellatief T.M.M., Ershov M.A., Kapustin V.M., Chernysheva E.A., Savelenko V.D., Salameh T., et al., Uniqueness Technique for Introducing High Octane Environmental Gasoline Using Renewable Oxygenates and its Formulation on Fuzzy Modeling, Science of the Total Environment, 802: 149863 (2022).
[4] al Shebli M.N., Raj A., Elkadi M., Anjum D., Pena G.D.J., Prabhu A., Fuel Oxygenation as a Novel Method to Reduce Sooting Propensity of Fuels: An Investigation with Gasoline Surrogate Fuels, Fuel, 324: 124562 (2022).
[5] Dhamodaran G., Sundaram Esakkimuthu G., Palani T., Krishnan R., feasibility of Adding Fusel Oil as an Oxygenate to Gasoline on Reducing Mpfi Engine Emissions, Environmental Engineering and Management Journal, 21: 1255-1264 (2022).
[6] Norouzi N.; Ebadi A.Gh.; Bozorgian A.R.; Hoseyni S.J.; Vessally E. Energy and Exergy Analysis of Internal Combustion Engine Performance of Spark Ignition for Gasoline, Methane, and Hydrogen Fuels, Iran. J. Chem. Chem. Eng. (IJCCE), 40(6): 1909-1930 (2021). 
[7] Chen Z., Zhang Y., Wei X., Zhang Q., Wu Z., Liu J., Thermodynamic Process and Performance of High n-Butanol/Gasoline Blends Fired in a GDI Production Engine Running Wide-Open Throttle (WOT), Energy Convers Manag., 152:57–64 (2017).
[8] Dhamodaran G, Esakkimuthu GS, Experimental Measurement of Physico-Chemical Properties of Oxygenate (DIPE) Blended Gasoline, Measurement (Lond)., 134: 280–5 (2019).
[9] Bae C, Kim J, Alternative Fuels for Internal Combustion Engines, Proceedings of the Combustion Institute, 36: 3389–413 (2017).
[10] Chidambaranathan B., Kumarasami D.P., Soundararajan G., Thulasiram R., Performance and Environmental Impact Assessment of Diesel Engine Operating on High Viscous Punnai Oil–Diesel Blends, Environmental Science and Pollution Research. (2022).
[11] Bibin C., Devan P.K., Senthil Kumar S., Madhu S., Sheeja R., Characterization of Nonedible Punnai Oil Biodiesel Derived by Two-Stage Transesterification, Green Energy and Technology. 1: p. 205–29, (2022).
[12] Kumar V.N. G.K., Kutti Y.P., Study on Combustion, Emission and Performance Behaviour of Diesel Engine Using CME Blends, International Journal of Applied Engineering Research, 10: 9017-9031 (2015).
[13] PK D., Chidambaranathan B., Soundararajan G., C. R., Improvisation of Combustion Behaviour of Jojoba Oil Diesel Blend Fuelled Di Diesel Engine by Engine Modifications Such as Mop and TBC, Iran. J. Chem. Chem. Eng. (IJCCE)., 41(7): 2417-2427, (2021).
[14] D.G., Sundaram E.G., Experimental Studies on Performance and Emission Characteristics of Diesel Engine Fuelled with Neem Oil Methyl Ester Blends, International Energy Journal, 15: 33-42 (2015).
[17] Li Y., Meng L., Nithyanandan K., Lee T.H., Lin Y., Lee C Fon F., et al. Combustion, Performance and Emissions Characteristics of a Spark-Ignition Engine Fueled with Isopropanol-n-Butanol-Ethanol and Gasoline Blends, Fuel, 184: 864–872 (2016).
[19] Schifter I., González U., Díaz L., Sánchez-Reyna G., Mejía-Centeno I., González-Macías C., Comparison of Performance and Emissions for Gasoline-Oxygenated Blends up to 20 Percent Oxygen and Implications for Combustion on a Spark-Ignited Engine, Fuel, 208: 673–681 (2017).
[20] Wang Z., Liu H., Reitz R.D., Knocking Combustion In Spark-Ignition Engines, Prog. Energy Combust. Sci., 61: 78–112 (2017).
[22] Awad O.I., Ali O.M., Mamat R., Abdullah A.A., Najafi G., Kamarulzaman M.K., et al. Using Fusel Oil as a Blend in Gasoline to Improve SI Engine Efficiencies: A Comprehensive Review, Renewable and Sustainable Energy Reviews, 69: 1232–42 (2017).
[23] Akansu S.O., Tangöz S., Kahraman N., İlhak M.İ., Açıkgöz S., Experimental Study of Gasoline-Ethanol-Hydrogen Blends Combustion in an SI Engine, Int. J. Hydrogen Energy, 42: 25781–25790 (2017).
[24] Altın İ., Bilgin A., Sezer İ., Theoretical Investigation on Combustion Characteristics of Ethanol-Fueled Dual-Plug SI Engine, Fuel, 257: 116068 (2019).
[25] Badra J., Al Ramadan A.S., Sarathy S.M., Optimization of the Octane Response of Gasoline/Ethanol Blends, Appl. Energy, 203: 778–93 (2017).
[29] Thakur A.K., Kaviti A.K., Mehra R., Mer K.K.S., Progress in Performance Analysis of Ethanol-Gasoline Blends on SI Engine, Renewable and Sustainable Energy Reviews, 69: 324–340 (2017).
[30] Zhuang Y., Zhu G., Gong Z., Wang C., Huang Y., Experimental and Numerical Investigation of Performance of an Ethanol-Gasoline Dual-Injection Engine, Energy, 186: 115835 (2019).
[31] Thangavel V., Momula S.Y., Gosala D.B., Asvathanarayanan R., Experimental Studies on Simultaneous Injection of Ethanol-Gasoline and N-Butanol-Gasoline in the Intake Port of a Four Stroke SI Engine, Renewable Energy, 91: 347–360 (2016).
[34] Liu W., Safdari Shadloo M., Tlili I., Maleki A., Bach Q.V., The Effect of Alcohol–Gasoline Fuel Blends on the Engines’ Performances and Emissions, Fuel, 276: 117977 (2020).
[35] Yousif I.E., Saleh A.M., Butanol-Gasoline Blends Impact on Performance and Exhaust Emissions of a Four Stroke Spark Ignition Engine, Case Studies in Thermal Engineering, 41: 102612 (2023).
[36] Dhamodaran G., Esakkimuthu G.S., Palani T., Feasibility of Adding N-Butanol and Di Isopropyl Ether with Gasoline on its Physico-Chemical Properties, Pet Sci Technol., 40: 486–503 (2022).
[37] Dhamodaran G., Esakkimuthu G.S., Pochareddy Y.K., Sivasubramanian H., Investigation of n-Butanol as Fuel in a Four-Cylinder MPFI SI Engine, Energy, 125: 726–735 (2017).
38] Wei H., Feng D., Pan M., Pan J.Y., Rao X.K., Gao D., Experimental Investigation on the Knocking Combustion Characteristics of n-Butanol Gasoline Blends in a DISI Engine, Applied Energy, 175: 346–355 (2016).
[40] Tian Z., Zhen X., Wang Y., Liu D., Li X., Combustion and Emission Characteristics of n-Butanol-Gasoline Blends in SI Direct Injection Gasoline Engine, Renewable Energy, 146: 267–279 (2020).
[42] Elkelawy M., el Shenawy E.A., Alm-Eldin Bastawissi H., Shams M.M., Panchal H., A Comprehensive Review on the Effects of Diesel/Biofuel Blends with Nanofluid Additives on Compression Ignition Engine by Response Surface Methodology, Energy Conversion and Management: X, 14: 100177 (2022).
[43] Singh Y., Sharma A., Kumar Singh G., Singla A., Kumar Singh N., Optimization of Performance and Emission Parameters of Direct Injection Diesel Engine Fuelled with Pongamia Methyl Esters-Response Surface Methodology Approach, Ind Crops Prod., 126: 218–226 (2018).
[44] Kadir Yesilyurt M., Uslu S., “Response Surface Methodology Based Optimization of a Diesel Engine Fueled with Diethyl Ether/Diesel Fuel Blends”, 3rd International Congress of Academic Research, Bolu, Turkey, July 20-22 (2020).
[45] Uslu S., Yesilyurt M.K., Yaman H., Impact Prediction Model of Acetone at Various Ignition Advance by Artificial Neural Network and Response Surface Methodology Techniques for Spark Ignition Engine, Science and Technology for Energy Transition (STET), 77: 7 (2022).
[47] Yusri I.M., Mamat R., Azmi W.H., Omar A.I., Obed M.A., Shaiful A.I.M., Application of Response Surface Methodology in Optimization of Performance and Exhaust Emissions of Secondary Butyl Alcohol-Gasoline Blends in SI Engine, Energy Convers Manag., 133: 178–195 (2017).
[49] Sathyanarayanan S., Suresh S., Saravanan C.G., Vikneswaran M., Dhamodaran G., Sonthalia A., et al. Experimental Investigation and Performance Prediction of Gasoline Engine Operating Parameters Fueled with Diisopropyl Ether-Gasoline Blends: Response Surface Methodology Based Optimization, J Clean Prod., 375: 133941 (2022).
[52] Abdalla A.N., Tao H., Bagaber S.A., Ali O.M., Kamil M., Ma X., et al. Prediction of Emissions and Performance of a Gasoline Engine Running with Fusel Oil–Gasoline Blends Using Response Surface Methodology, Fuel, 253: 1–14 (2019).
[53] Yusri I.M., Mamat R., Najafi G., Razman A., Awad O.I., Azmi W.H., et al. Alcohol Based Automotive Fuels from First Four Alcohol Family in Compression and Spark Ignition Engine: A Review on Engine Performance and Exhaust Emissions, Renewable and Sustainable Energy Reviews, 77: 169–181 (2017).
[54] Montgomery D.C., “Design and Analysis of Experiments”.
[55] Deepanraj B., Senthilkumar N., Ranjitha J, Jayaraj S, Ong HC. Biogas from Food Waste through Anaerobic Digestion: Optimization with  Response Surface Methodology, Biomass Convers Biorefin., 11: 227–239 (2021).
[57] Sathyanarayanan S., Suresh S., Uslu S., Shivaranjani R.S., Chandramohan V.P., Simsek S., Optimization of Gasoline Engine Emission Parameters Employing Commercial and Sucrolite-Catalyst Coated Converter Using Response Surface Methodology, Int. J. Environ. Sci. Technol., (2022)
[59] Sivakumar D.B., Arulmozhi M., Sathyanarayanan S., Sridharan M., Optimization of Gasoline Engine Operating Parameters Fueled with DIPE-Gasoline Blend: Comparative Evaluation Between Response Surface Methodology and Fuzzy Logic Expert System, Process Safety and Environmental Protection, 158: 291–307 (2022).
[60] Singh A., Sinha S., Kumar Choudhary A., Author C., Optimization of Operating Parameters of Diesel Engine Powered with Jatropha Oil Diesel Blend by Employing Response Surface Methodology, International Journal of Renewable Energy Research, 11: 2 (2021).
[62] Barboza A.B.V., Mohan S., Dinesha P., Influence of Hydrogen Peroxide Emulsification with Gasoline on the Emissions and Performance in an MPFI Engine, Int J Hydrogen Energy, 47: 25034-25043 (2022).
[65] Chidambaranathan B., Kumarasami D.P., Raghavan S., Sundaram M., Thermal and Chemical Exhaust Gas Recirculation Potential of Punnai Oil Biodiesel-Fuelled Diesel Engine for Environmental Sustainability, Environmental Science and Pollution Research, (2022).
[66] İlhak M.İ., Akansu S.O., Kahraman N., Ünalan S., Experimental Study on an SI Engine Fuelled by Gasoline/Acetylene Mixtures, Energy, 151: 707–714 (2018).
[68] Sathyanarayanan S., Suresh S., Sridharan M., Effect of Sucrose Catalyst in the Catalytic Converter on Performance and Emission of Spark Ignition Engine, J. Therm. Sci. Eng. Appl., 14 (4): 041015 (2021).