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Performance and emission characteristics of a diesel engine operating on different water in diesel emulsion fuels: optimization using response surface methodology (RSM)
Frontiers in Energy ( IF 2.9 ) Pub Date : 2019-12-20 , DOI: 10.1007/s11708-019-0646-7
Seyed Saeed Hoseini , Mohammad Amin Sobati

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.

中文翻译:

在柴油乳化燃料中以不同水运行的柴油发动机的性能和排放特性:使用响应面方法(RSM)进行优化

氮氧化物(NO x使用柴油乳化燃料中的水可以减少柴油发动机的排放,而无需进行任何发动机改装。在本文中,通过超声辐射制备了柴油乳化燃料中不同的水配方。通过实验检查了乳液中的水滴尺寸,多分散指数和制得的燃料的稳定性。之后,研究了在柴油乳化燃料中使用不同水量的单缸风冷柴油机的性能特征和废气排放。含水量(按体积计在5%–10%范围内),表面活性剂(按体积计在0.5%–2%范围内)和亲水亲脂平衡(HLB)的影响(范围在5–10%之间) 8)使用Box-Behnken设计(BBD)作为响应面方法(RSM)的子集进行了检查。考虑到多目标优化,发现用于乳化燃料的最佳配方是5%的水,2%的表面活性剂和HLB为6.8。在最佳乳化燃料和纯柴油之间进行了比较,以提高发动机性能和排放特性。与纯柴油相比,最佳乳化燃料的氮氧化物排放量显着减少(-18.24%)。
更新日期:2019-12-20
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