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首页> 外文期刊>Energy Conversion & Management >Combustion performance and emission analysis of diesel engine fuelled with water-in-diesel emulsion fuel made from low-grade diesel fuel
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Combustion performance and emission analysis of diesel engine fuelled with water-in-diesel emulsion fuel made from low-grade diesel fuel

机译：低级柴油制柴油机水乳化燃料的柴油机燃烧性能及排放分析

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摘要

In the present research, an experiment is designed and conducted to investigate the effect of W/D originating from low-grade diesel fuel (D2) on the combustion performance and emission characteristics of a direct injection diesel engine under varying engine loads (25-100%) and constant engine speed (3000 rpm). Four types of W/D are tested, which consist of different water percentages (5%, 10%, 15% and 20%), with constant 2% of surfactant and labelled as E5, E10, E15 and E20, respectively. The specific fuel consumption (SFC) of the engine when using each type of W/D is found to be reduced overall. This is observed when the total amount of diesel fuel in the emulsion is compared with that of neat D2. E20 shows a comparable maximum in-cylinder pressure and pressure rise rate (PRR) compared to D2 in all load conditions. In addition, it produces the highest maximum rate of heat release (MHRR) in almost every load compared to D2 and other W/Ds. NOx and PM are found to be reduced for all types of W/D. The carbon monoxide (CO) and carbon dioxide (CO_2) emissions increase compared to D2 at low load and high load, respectively. Overall, it is observed that the formation of W/D from low-grade diesel is an appropriate alternative fuel method that can bring about greener exhaust emissions and fuel savings without deteriorating engine performance.
机译：在本研究中，设计并进行了一项实验，以研究低级柴油（D2）产生的W / D对变化的发动机负荷（25-100）下直喷式柴油发动机的燃烧性能和排放特性的影响％）和恒定的发动机转速（3000 rpm）。测试了四种W / D，它们由不同的水百分比（5％，10％，15％和20％）组成，具有恒定的2％表面活性剂，分别标记为E5，E10，E15和E20。发现使用每种类型的W / D时，发动机的比燃料消耗（SFC）总体上降低了。当将乳液中柴油的总量与纯净D2的总量进行比较时，可以观察到这一点。与D2相比，E20在所有负载条件下均显示出可比的最大缸内压力和压力上升率（PRR）。此外，与D2和其他W / D相比，它几乎在每个负载中都产生最高的最大放热率（MHRR）。发现所有类型的W / D的NOx和PM都减少了。与低负载和高负载下的D2相比，一氧化碳（CO）和二氧化碳（CO_2）的排放量分别增加。总的来说，观察到低级柴油形成W / D是一种合适的替代燃料方法，可以带来更环保的废气排放并节省燃料，而不会降低发动机性能。

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