A Reduced Reaction Mechanism for Diesel/2-Methyltetrahydrofuran Dual-Fuel Engine Application

Song Li, Chen Huang, Chen Yang, Wenbin Yu, Jinping Liu () and Tingting Zhang
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Song Li: School of Mechanical Engineering, Anyang Institute of Technology, Anyang 455000, China
Chen Huang: School of Mechanical and Electronic Engineering, Shandong Agricultural University, Taian 271018, China
Chen Yang: School of Mechanical Engineering, Anyang Institute of Technology, Anyang 455000, China
Wenbin Yu: School of Mechanical Engineering, Anyang Institute of Technology, Anyang 455000, China
Jinping Liu: School of Mechanical Engineering, Anyang Institute of Technology, Anyang 455000, China
Tingting Zhang: School of Mechanical and Electronic Engineering, Shandong Agricultural University, Taian 271018, China

Energies, 2022, vol. 15, issue 20, 1-18

Abstract: 2-methyltetrahydrofuran (MTHF2) has been recently regarded as a promising alternative engine fuel. However, the chemical reaction mechanism for MTHF2 combustion in the engine has not been reported to date. In this study, a reduced diesel/MTHF2 reaction mechanism with only 78 species among 233 reactions was constructed for diesel/MTHF2 dual-fuel engine simulations. Firstly, a diesel surrogate mechanism involving the sub-mechanisms of n-decane, iso-octane, methylcyclohexane (MCH), toluene, a reduced mechanism of C 2 -C 3 species and a detailed mechanism of H 2 /CO/C 1 was selected. Secondly, a skeletal MTHF2 mechanism containing 54 species and 294 reactions was formulated under engine-relevant conditions using combined mechanism reduction methods. Thirdly, a reduced sub-mechanism of MTHF2 oxidation with 11 species and 13 reactions was extracted and combined with the four-component diesel surrogate fuel mechanism. Subsequently, the reduced diesel/MTHF2 mechanism was obtained by improving the combined five-component mechanism based on sensitivity analysis. Finally, the proposed mechanism was validated with selected experimental data of ignition delay times, flame species concentrations and laminar flame speeds. In addition, the new measurements from diesel/MTHF2 dual-fuel engine combustion were obtained and then utilized to further assess the developed mechanism. Overall, the developed diesel/MTHF2 mechanism can be used for diesel and MTHF2 dual-fuel engine combustion simulation.

Keywords: 2-methyltetrahydrofuran; diesel; reduced mechanism; dual-fuel engine (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: 2022
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