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Determination of optimum manganese amount by response surface methodology with alcohol–gasoline fuel blend in an SI engine

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Abstract

In this study, the response surface methodology (RSM) was used to optimize the addition of different amounts of manganese to a spark-ignition (SI) engine operating with alcohol–gasoline fuel blend. The content of the fuel blend used was set to 7.5% fusel oil, 7.5% ethanol and 85% gasoline. By adding 4, 8, 12 and 16 ppm manganese to this fuel mixture, tests were carried out at different engine speeds (2500, 2750, 3000 and 3250 rpm). An analysis of variance (ANOVA)-supported RSM model was created to determine the optimum engine speed/manganese amount and responses according to optimum engine conditions. According to the optimization results obtained from RSM, the optimum manganese amount and engine speed were found as 3 ppm and 2650 rpm, respectively. In addition, the responses according to optimum engine conditions are 26.237 Nm, 8.262 kW, 385.749 g/kWh, 666.924 °C, 7.079%, 34.3115 ppm, 7.921% and 140.428 ppm for torque, power, brake specific fuel consumption (BSFC), exhaust gas temperature (EGT), carbon monoxide (CO), hydrocarbon (HC), carbon dioxide (CO2) and nitrogen oxide(NOx), respectively. Moreover, according to the validation tests for the reliability of the optimization results, the error rates were below 10%. Based on these results, it can be said that RSM can successfully determine the amount of manganese to be added to the SI engine operating with dual alcohol/gasoline blends.

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Abbreviations

RSM:

Response Surface Methodology

ANOVA:

Analysis of variance

B:

Gasoline

FE15B85:

7.5% Waste fusel oil and 7.5% ethanol by volume, and 85% gasoline

4ppmFE15B85:

7.5% Waste fusel oil and 7.5% ethanol by volume, and 85% gasoline and 4 ppm manganese

8ppmFE15B85:

7.5% Waste fusel oil and 7.5% ethanol by volume, and 85% gasoline and 8 ppm manganese

12ppmFE15B85:

7.5% Waste fusel oil and 7.5% ethanol by volume, and 85% gasoline and12 ppm manganese

16ppmFE15B85:

7.5% Waste fusel oil and 7.5% ethanol by volume, and 85% gasoline and 16 ppm manganese

EGT:

Exhaust gas temperature

BSFC:

Break specific fuel consumption

CO:

Carbon monoxide

HC:

Hydrocarbon

CO2 :

Carbon dioxide

NOx :

Nitrogen oxide

ppm:

Parts per million

Mn:

Manganese

ASTM:

American Society for Testing and Materials

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Acknowledgments

The authors wish to thank all who assisted in conducting this work.

Funding

No financial support was received from any institution or organization for this study.

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Authors

Contributions

Suleyman USTUN designed the entire experiments and established the system, analyzed the results, and wrote the manuscript.

Corresponding author

Correspondence to S. Ustun.

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Conflict of interest

The author declares that he have no conflict of interest. The author acknowledges that no financial interest or benefit has been raised from the direct applications of their research.

Ethical approval

Ethical approval for this study was not sought.

Additional information

Editorial responsibility: J Aravind.

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Ustun, S. Determination of optimum manganese amount by response surface methodology with alcohol–gasoline fuel blend in an SI engine. Int. J. Environ. Sci. Technol. 19, 2075–2088 (2022). https://doi.org/10.1007/s13762-021-03624-4

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  • DOI: https://doi.org/10.1007/s13762-021-03624-4

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