Impact Of Aluminium Oxide Nanoparticles As An Additive In Diesel-Methanol Blends On A Modern Di Diesel Engine

APPLIED THERMAL ENGINEERING(2021)

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摘要
The development of nanotechnology makes nanoparticle additives for internal combustion engines possible and the existing research results have shown that the engine performances can be improved with metal-based nanoparticles additive in the fuel. The present study makes an attempt to add aluminium oxide (AL(2)O(3)) nanoparticles (25, 100 ppm) into diesel-methanol blends, and to study the impact of the nanoparticle additive on the characteristics of a modern DI diesel engine. The results showed that the presence of AL(2)O(3) nano-particles in the diesel-methanol blends improved the peak in-cylinder pressure, heat release rate and brake thermal efficiency by 2.5%, 16.1% and 3.6%, respectively, as compared with those without AL(2)O(3) additives, as well as the decreases in the ignition delay and combustion duration by up to 6.9% and 16%. And the brake specific fuel and energy consumption can be reduced by up to 3.7% and 3.5%, respectively. Moreover, engine emission tests showed the suppressions in CO, HC and smoke emissions by up to 83.3%, 40.9% and 69.2%, respectively, but a marginal increase in NOx emission by 14.4%. These results indicate that the presence of nanoparticle additives in the diesel-methanol blends can achieve sound effects of energy conservation and emission reductions.
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关键词
AL(2)O(3) nano-additives, Methanol, Combustion, Performance, Emissions
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