Effect of Machine Learning Algorithms on Prediction of In-Cylinder Combustion Pressure of Ammonia–Oxygen in a Constant-Volume Combustion Chamber

Lijia Fang, Hardeep Singh, Takuma Ohashi, Masato Sanno, Guansen Lin, Emir Yilmaz, Mitsuhisa Ichiyanagi and Takashi Suzuki ()
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Lijia Fang: Graduate School of Science and Technology, Sophia University, Tokyo 102-8554, Japan
Hardeep Singh: Department of Engineering and Applied Sciences, Sophia University, Tokyo 102-8554, Japan
Takuma Ohashi: Graduate School of Science and Technology, Sophia University, Tokyo 102-8554, Japan
Masato Sanno: Graduate School of Science and Technology, Sophia University, Tokyo 102-8554, Japan
Guansen Lin: Graduate School of Science and Technology, Sophia University, Tokyo 102-8554, Japan
Emir Yilmaz: Department of Engineering and Applied Sciences, Sophia University, Tokyo 102-8554, Japan
Mitsuhisa Ichiyanagi: Department of Engineering and Applied Sciences, Sophia University, Tokyo 102-8554, Japan
Takashi Suzuki: Department of Engineering and Applied Sciences, Sophia University, Tokyo 102-8554, Japan

Energies, 2024, vol. 17, issue 3, 1-11

Abstract: Road vehicles, particularly cars, are one of the primary sources of CO 2 emissions in the transport sector. Shifting to unconventional energy sources such as solar and wind power may reduce their carbon footprints considerably. Consequently, using ammonia as a fuel due to its potential benefits, such as its high energy density, being a carbon-free fuel, and its versatility during storage and transportation, has now grabbed the attention of researchers. However, its slow combustion speed, larger combustion chamber requirements, ignition difficulties, and limited combustion stability are still major challenges. Therefore, authors tried to analyze the combustion pressure of ammonia in a constant-volume combustion chamber across different equivalence ratios by adopting a machine learning approach. While conducting the analysis, the experimental values were assessed and subsequently utilized to predict the induced combustion pressure in a constant-volume combustion chamber across various equivalence ratios. In this research, a two-step prediction process was employed. In the initial step, the Random Forest algorithm was applied to assess the combustion pressure. Subsequently, in the second step, artificial neural network machine learning algorithms were employed to pinpoint the most effective algorithm with a lower root-mean-square error and R 2 . Finally, Linear Regression illustrated the lowest error in both steps with a value of 1.0, followed by Random Forest.

Keywords: ammonia; combustion; machine learning; random forest; artificial neural network; in-cylinder pressure; constant-volume combustion chamber (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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