单缸汽油发动机中汽油与 JP-8、Jet A-1 和硝基甲烷混合物的混合燃料的性能、排放、振动和噪声特性

IF 6.7 1区 工程技术 Q2 ENERGY & FUELS
Fuel Pub Date : 2025-03-12 DOI:10.1016/j.fuel.2025.135034
Miray İlgar Kılıçalp , Usame Demir
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The highest thermal efficiency of 18.46 % was observed for the 90G5NM5JP8 blend at 10 Nm, compared to 16.67 % for pure gasoline (G100). Similarly, BSFC values significantly decreased with increasing load for all fuel blends, with 90G5NM5JP8 demonstrating the lowest BSFC at 458.17 g/kWh under 10 Nm load. In terms of emissions, NO<sub>x</sub> levels increased with increasing load, with 90G5NM5JP8 reaching 2000 ppm at 10 Nm, indicating more combustion temperature. CO and HC emissions, on the other hand, decreased with higher loads for all blends, with 90G5NM5JP8 showing the lowest CO emissions at 3.026 % and HC emissions at 76 ppm. CO<sub>2</sub> emissions were higher for fuel blends containing Jet A-1 and nitromethane, reflecting more complete combustion. The study concludes that JP-8 and nitromethane blends significantly improve engine performance and efficiency but result in higher NO<sub>x</sub> emissions. Experimental findings indicate that as engine load increases, vibration and noise levels rise across all fuel types. For G100 fuel, vibration increased by 191 %, from 33.49 m/s<sup>2</sup> at 0 Nm to 97.49 m/s<sup>2</sup> at 10 Nm. This increase was more pronounced in JP-8- and nitromethane-containing blends, with 90G10JP8 experiencing a 224 % rise, from 33.82 m/s<sup>2</sup> to 108.5 m/s<sup>2</sup> over the same load range. A similar trend was observed in noise levels, where G100′s noise increased by 8.2 %, from 90.01 dBA at 0 Nm to 97.37 dBA at 10 Nm. In contrast, the high-energy 90G5NM5JP8 blend exhibited a 9.1 % increase, reaching 99.13 dBA at 10 Nm. On the other hand, Jet A-1-based fuels demonstrated a relatively lower increase; for instance, 95G5JetA1′s vibration levels rose by 165 %, from 36.16 m/s2 to 95.83 m/s2. 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摘要

本文章由计算机程序翻译,如有差异,请以英文原文为准。
Performance, emission, vibration and noise characteristics of gasoline-based fuel blends with JP-8, Jet A-1, and nitromethane mixtures in a single-cylinder gasoline engine
This study investigates the performance, fuel consumption, and emission characteristics of various gasoline-based fuel blends, including JP-8 (Jet Propellant 8), Jet A-1, and nitromethane mixtures, in a single-cylinder, air-cooled, four-stroke gasoline engine. The engine was operated at a constant speed of 2500 RPM under varying torque loads (0 Nm, 2.5 Nm, 5 Nm, 7.5 Nm, and 10 Nm), and key performance indicators such as brake specific fuel consumption (BSFC), thermal efficiency, exhaust gas temperature (EGT), noise, vibration and exhaust emissions (CO, CO2, NOx, HC, O2) were measured. The results revealed that blended fuels containing JP-8 and nitromethane exhibited improved thermal efficiency, especially under higher torque conditions. The highest thermal efficiency of 18.46 % was observed for the 90G5NM5JP8 blend at 10 Nm, compared to 16.67 % for pure gasoline (G100). Similarly, BSFC values significantly decreased with increasing load for all fuel blends, with 90G5NM5JP8 demonstrating the lowest BSFC at 458.17 g/kWh under 10 Nm load. In terms of emissions, NOx levels increased with increasing load, with 90G5NM5JP8 reaching 2000 ppm at 10 Nm, indicating more combustion temperature. CO and HC emissions, on the other hand, decreased with higher loads for all blends, with 90G5NM5JP8 showing the lowest CO emissions at 3.026 % and HC emissions at 76 ppm. CO2 emissions were higher for fuel blends containing Jet A-1 and nitromethane, reflecting more complete combustion. The study concludes that JP-8 and nitromethane blends significantly improve engine performance and efficiency but result in higher NOx emissions. Experimental findings indicate that as engine load increases, vibration and noise levels rise across all fuel types. For G100 fuel, vibration increased by 191 %, from 33.49 m/s2 at 0 Nm to 97.49 m/s2 at 10 Nm. This increase was more pronounced in JP-8- and nitromethane-containing blends, with 90G10JP8 experiencing a 224 % rise, from 33.82 m/s2 to 108.5 m/s2 over the same load range. A similar trend was observed in noise levels, where G100′s noise increased by 8.2 %, from 90.01 dBA at 0 Nm to 97.37 dBA at 10 Nm. In contrast, the high-energy 90G5NM5JP8 blend exhibited a 9.1 % increase, reaching 99.13 dBA at 10 Nm. On the other hand, Jet A-1-based fuels demonstrated a relatively lower increase; for instance, 95G5JetA1′s vibration levels rose by 165 %, from 36.16 m/s2 to 95.83 m/s2. These findings suggest that these blends hold promise for high-performance applications, though further work is needed to manage emissions for broader practical use.
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来源期刊
Fuel
Fuel 工程技术-工程:化工
CiteScore
12.80
自引率
20.30%
发文量
3506
审稿时长
64 days
期刊介绍: The exploration of energy sources remains a critical matter of study. For the past nine decades, fuel has consistently held the forefront in primary research efforts within the field of energy science. This area of investigation encompasses a wide range of subjects, with a particular emphasis on emerging concerns like environmental factors and pollution.
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