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| Combustion and Emission Characteristics of N-Pentanol/N-Dodecane Binary Fuels Under Different Injection Pressures |
| DOI：10.13949/j.cnki.nrjgc.2024.01.004 |
| Key Words:n-pentanol n-dodecane injection pressure combustion emission |
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| Abstract:In order to investigate the adaptability of pentanol fuels to engines， a combustion model of n-pentanol/n-dodecane binary fuel was developed based on experimental data to investigate the combustion and emission characteristics of binary fuels at different injection pressures. The results show that as the blending ratio of n-pentanol in the binary fuel increases， the decrease in indicated mean effective pressure （IMEP） and the increase in unburned fuel leads to a decrease in indicated thermal efficiency （ITE）. At the same time， the low-temperature region and low-equivalent-ratio region in the cylinder increases， and both nitrogen oxides （NOx） and soot emissions decreases. However， incomplete combustion increases carbon monoxide （CO） and hydrocarbon （HC） emissions. In addition， the increase in injection pressure enhances the atomization effect of binary fuels， the average in-cylinder temperature increases， the high-temperature oxygen-rich area increases， and NOx emissions increase while soot emissions decrease. Due to the reduction of incomplete combustion， the CO and HC emissions decrease， but they increase again due to the tendency of the wall impact phenomenon at the injection pressure of 300 MPa. |
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