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首页> 外文期刊>Case Studies in Thermal Engineering >Exhaust noise, performance and emission characteristics of spark ignition engine fuelled with pure gasoline and hydrous ethanol gasoline blends
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Exhaust noise, performance and emission characteristics of spark ignition engine fuelled with pure gasoline and hydrous ethanol gasoline blends

机译：纯汽油和含水乙醇汽油混合燃料的火花点火发动机的排气噪声，性能和排放特性

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The exhaust noise, performance and emission characteristics of a gasoline engine fuelled by hydrous ethanol gasoline with 10%, 20% hydrous ethanol by volume (E10W and E20W) and pure gasoline (E0) were experimentally investigated. The tests were performed at full load and different engine speeds varying from 1500?rpm to 5000?rpm. The results showed that compared with E0, E10W and E20W had much lower exhaust noise at low engine speeds. With the increase of engine speed, E0 showed an advantage in low exhaust noise. However, engine fuelled with three fuels displayed comparable noise emissions at high speed. In addition, better thermal efficiency, significantly decreased CO and HC emissions were achieved by hydrous ethanol gasoline at all tested operating conditions. However, significant NOxemission and slight BSFC were observed for E10W and E20W. Compared with E20W, E10W showed decreased BSFC, HC and NOxemissions with the increase of engine speed, while CO emission was only slightly increased. Hydrous ethanol gasoline was capable of realizing comparable torque and power with E0 at all operating conditions. From the results above, hydrous ethanol gasoline could be considered as a promising alternative for SI engine. What's more, E10W exhibits enhanced performance.
机译：实验研究了以体积百分比为10％，20％的含水乙醇（E10W和E20W）和纯汽油（E0）为燃料的含水乙醇汽油为燃料的汽油发动机的排气噪声，性能和排放特性。这些测试是在满载条件下进行的，发动机转速从1500？rpm到5000？rpm不等。结果表明，与E0相比，E10W和E20W在低发动机转速下的排气噪声要低得多。随着发动机转速的提高，E0在低排气噪声方面显示出优势。但是，以三种燃料为燃料的发动机在高速下显示出可比的噪声排放。此外，在所有测试的运行条件下，含水乙醇汽油均具有更好的热效率，大大减少了CO和HC排放。但是，对于E10W和E20W，观察到明显的NOx排放和少量的BSFC。与E20W相比，E10W的BSFC，HC和NOx排放随发动机转速的增加而降低，而CO排放仅略有增加。含水乙醇汽油能够在所有运行条件下实现与E0相当的扭矩和功率。根据以上结果，含水乙醇汽油可被视为SI发动机的有前途的替代品。此外，E10W具有增强的性能。

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