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首页> 外文期刊>Advances in Environmental Technology >Environmental effects of using Methanol as a biofuel into the combustion chamber of a heavy-duty diesel engine
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Environmental effects of using Methanol as a biofuel into the combustion chamber of a heavy-duty diesel engine

机译：使用甲醇作为生物燃料进入重型柴油机燃烧室的环境影响

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Methanol as a biofuel is an environmentally friendly substitute for pure diesel and can be obtained from biomasses. The use of biofuels such as methanol for the combustion process is associated with positive impacts on the environment. Using pure methanol or a blend of diesel/methanol fuel in motorized vehicles has been proposed by researchers. In this paper, pure methanol was injected into the combustion chamber of a ISM 370 HD diesel engine and the exhaust emissions were evaluated by using AVL FIRE CFD code software at four engine speeds (1200, 1400, 1600 and 1800 rpm). Additionally, the influences of EGR mass fraction and various injection timings were investigated. In order to validate the simulation results, in-cylinder mean pressure and rate of heat release (RHR) were compared with experimental data, and the results gave an acceptable agreement. The obtained results from the conducted simulation showed that the use of methanol fuel in the combustion chamber dramatically reduced the amount of exhaust emissions such as NO, soot, CO, and CO2 to 90%, 75%, 40%, and 26%, respectively. In addition, a mass fraction of EGR (20%) caused a reduction in the amount of exhaust NO to about 12%. It was determined that when a system is equipped with a fueling system at 3 deg before top dead center (BTDC), the exhaust NO and soot are reduced by 5.8% and 3%.
机译：甲醇作为生物燃料是纯柴油的环保替代品，可以从生物质中获得。在燃烧过程中使用生物燃料（例如甲醇）会给环境带来积极影响。研究人员已经提出在机动车辆中使用纯甲醇或柴油/甲醇燃料的混合物。在本文中，将纯甲醇注入ISM 370 HD柴油机的燃烧室中，并使用AVL FIRE CFD代码软件在四种发动机转速（1200、1400、1600和1800 rpm）下评估了废气排放。此外，还研究了EGR质量分数和各种喷射正时的影响。为了验证模拟结果，将缸内平均压力和放热率（RHR）与实验数据进行了比较，结果给出了可接受的协议。从进行的模拟获得的结果表明，在燃烧室中使用甲醇燃料可将NO，烟灰，CO和CO2等废气排放量分别显着降低至90％，75％，40％和26％。 。另外，EGR的质量分数（20％）导致排气NO的量减少到大约12％。可以确定的是，当系统在上止点（BTDC）之前3度处装有加油系统时，废气NO和烟灰分别减少了5.8％和3％。

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