Comparative study on combustion and emission characteristics of methanol, ethanol and butanol fuel in TISI engine
Comparative study on combustion and emission characteristics of methanol, ethanol and butanol fuel in TISI engine
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TISI发动机甲醇、乙醇、丁醇燃料燃烧及排放特性对比研究
DOI：
10.1016/j.fuel.2019.116199
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发表时间：
2020
期刊：
影响因子：
7.4
通讯作者：
Li Xiaoyan
中科院分区：
文献类型：
--
作者：
Tian Zhi;Zhen Xudong;Wang Yang;Liu Daming;Li Xiaoyan
目前，甲醇、乙醇和丁醇是公认的清洁燃料并得到了广泛的研究。本文主要研究甲醇、乙醇、丁醇混合汽油在不同发动机转速、负荷、火焰核半径和点火时间下的燃烧和排放特性。结果表明，在汽油中添加醇类燃料可以提高发动机的制动扭矩（BT）和放热率（HRR）。而且，甲醇提高BT和HRR的能力均高于乙醇和丁醇，且丁醇的提高效果最差。在燃油经济性方面，汽油中添加醇类燃料可以提高发动机的制动热效率（BTE），但制动燃料消耗率（BSFC）也有所增加。与乙醇和丁醇相比，甲醇可以更好地提高发动机的BTE，但也更多地提高了BSFC。在排放方面，汽油中添加醇类燃料可以减少CO和CO2的排放，但HC排放量有所增加。在一定条件下，M20与点火时间结合可以更好地降低NOx排放。一般来说，在汽油中添加醇类燃料，同时调整点火时间和火焰核半径，可以有效提高发动机扭矩，降低油耗和废气排放。
At present, methanol, ethanol and butanol are recognized clean fuels and have been extensively studied. This paper mainly studies the combustion and emission characteristics of methanol, ethanol and butanol blended with gasoline under different engine speed, load, flame kernel radius and ignition time. The results show that adding alcohol fuels to gasoline can increase the brake torque (BT) and heat release rate (HRR) of the engine. Moreover, the ability of methanol to increase BT and HRR is higher than that of ethanol and butanol, and the increase effect of butanol is the worst. In terms of fuel economy, the addition of alcohol fuels to gasoline can increase the brake thermal efficiency (BTE) of the engine, but brake specific fuel consumption (BSFC) is also increased. Compared with ethanol and butanol, methanol can better increase BTE of the engine, but it also increases BSFC even more. In terms of emissions, the addition of alcohol fuels to gasoline can reduce CO and CO2emissions, but HC emissions are increased. Under certain conditions, M20 combined with ignition time can better reduce NOxemissions. In general, the addition of alcohol fuels to gasoline while adjusting the ignition time and flame kernel radius can effectively improve engine torque and reduce fuel consumption and exhaust emissions.