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Effect of the alcohol type used in the production of waste cooking oil biodiesel on diesel performance and emissions

机译：废食用油生物柴油生产中使用的酒精类型对柴油性能和排放的影响

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摘要

Experimental results were obtained by testing two different alcohol-derived biodiesel fuels: methyl ester and ethyl ester, both obtained from waste cooking oil. These biodiesel fuels were tested pure and blended (30% and 70% biodiesel content, volume basis) with a diesel reference fuel, which was tested too, in a 2.2 1, common-rail injection diesel engine. The operation modes were selected to simulate the European Driving Cycle. Pure biodiesel fuels, compared to the reference fuel, resulted in a slight increase in fuel consumption, in very slight differences in NOx emissions, and in sharp reductions in total hydrocarbon emissions, smoke opacity and particle emissions (both in mass and number), despite the increasing volatile organic fraction of the particulate matter. The type of alcohol used in the production process was found to have a significant effect on the total hydrocarbon emissions and on the particulate matter composition. As the alcohol used was more volatile, both the hydrocarbon emissions and volatile organic fraction of the particulate matter were observed to increase.
机译：通过测试两种不同的源自酒精的生物柴油燃料（甲酯和乙酯）获得了实验结果，这两种燃料均来自废弃的食用油。这些生物柴油燃料经过了纯净测试，并与柴油参考燃料混合（30％和70％的生物柴油，以体积为基准），后者也在2.2 1共轨喷射柴油发动机中进行了测试。选择了操作模式以模拟欧洲行驶周期。与参考燃料相比，纯生物柴油燃料尽管造成了燃料消耗的轻微增加，NOx排放量的微小差异，但总碳氢化合物排放量，烟气不透明度和颗粒物排放量（无论是质量还是数量）均大幅降低。颗粒物质中挥发性有机物含量的增加。发现在生产过程中使用的酒精类型对总碳氢化合物排放量和颗粒物组成有重大影响。由于所用醇的挥发性更高，因此观察到颗粒物的碳氢化合物排放量和挥发性有机部分均增加。

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