The nitrogen oxide(NOx)release of diesel engines can be reduced using water in diesel emulsion fuel without any engine modification.In the present paper,different formulations of water in diesel emulsion fuels were pr...The nitrogen oxide(NOx)release of diesel engines can be reduced using water in diesel emulsion fuel without any engine modification.In the present paper,different formulations of water in diesel emulsion fuels were prepared by ultrasonic irradiation.The water droplet size in the emulsion,polydisperisty index,and the stability of prepared fuel was examined,experimentally.Afterwards,the performance characteristics and exhaust emission of a single cylinder air-cooled diesel engine were investigated using different water in diesel emulsion fuels.The effect of water content(in the range of 5%-10% by volume),surfactant content(in the range of 0.5%-2% by volume),and hydrophilic-lipophilic balance(HLB)(in the range of 5-8)was examined using Box-Behnken design(BBD)as a subset of response surface methodology(RSM).Considering multi-objective optimization,the best formulation for the emulsion fuel was found to be 5%water,2% surfactant,and HLB of 6.8.A comparison was made between the best emulsion fuel and the neat diesel fuel for engine performance and emission characteristics.A considerable decrease in the nitrogen oxide emission(-18.24%)was observed for the best emulsion fuel compared to neat diesel fuel.展开更多
利用超声波作为强化手段,Span80和烷基酚聚醚A复配制备乳化柴油,考察了复配HLB值对稳定性的影响,以及在75GF型柴油发电机上测定了含水量、环烷酸钴对乳化柴油的节油性能的影响。实验结果表明:超声频率为20 k Hz,声压为150 V,作用时间为1...利用超声波作为强化手段,Span80和烷基酚聚醚A复配制备乳化柴油,考察了复配HLB值对稳定性的影响,以及在75GF型柴油发电机上测定了含水量、环烷酸钴对乳化柴油的节油性能的影响。实验结果表明:超声频率为20 k Hz,声压为150 V,作用时间为10 min时,乳化柴油稳定性最好;同时,当m(Span80)︰m(A)︰m(环烷酸钴)=9︰5︰6,最高节油率为8.24%。展开更多
文摘The nitrogen oxide(NOx)release of diesel engines can be reduced using water in diesel emulsion fuel without any engine modification.In the present paper,different formulations of water in diesel emulsion fuels were prepared by ultrasonic irradiation.The water droplet size in the emulsion,polydisperisty index,and the stability of prepared fuel was examined,experimentally.Afterwards,the performance characteristics and exhaust emission of a single cylinder air-cooled diesel engine were investigated using different water in diesel emulsion fuels.The effect of water content(in the range of 5%-10% by volume),surfactant content(in the range of 0.5%-2% by volume),and hydrophilic-lipophilic balance(HLB)(in the range of 5-8)was examined using Box-Behnken design(BBD)as a subset of response surface methodology(RSM).Considering multi-objective optimization,the best formulation for the emulsion fuel was found to be 5%water,2% surfactant,and HLB of 6.8.A comparison was made between the best emulsion fuel and the neat diesel fuel for engine performance and emission characteristics.A considerable decrease in the nitrogen oxide emission(-18.24%)was observed for the best emulsion fuel compared to neat diesel fuel.
文摘利用超声波作为强化手段,Span80和烷基酚聚醚A复配制备乳化柴油,考察了复配HLB值对稳定性的影响,以及在75GF型柴油发电机上测定了含水量、环烷酸钴对乳化柴油的节油性能的影响。实验结果表明:超声频率为20 k Hz,声压为150 V,作用时间为10 min时,乳化柴油稳定性最好;同时,当m(Span80)︰m(A)︰m(环烷酸钴)=9︰5︰6,最高节油率为8.24%。
