| Summary: | 碩士 === 明志科技大學 === 機械工程系機械與機電工程碩士班 === 106 === As the previous crisis of fossil fuels showed a high degree of dependence on them, with the limited mineral resources in our country, most of the petrochemical energy sources rely on imports. And the issue of environmental pollution is gradually receiving international attention, so the development of alternative energy is the most important issue. In the densely populated area of Taiwan, people use scooter at a higher rate than other private means of transport. Therefore, in Taiwan, scooter emit more pollutants than other private transporters. Therefore, this study uses the commonly available locomotives which have passed the environmental protection regulations of the fifth period. And using bio-butanol (butyl propionate) - gasoline mixed fuel dual fuel hybrid combustion mode, and by adjusting the fuel injection pulse width to explore the fuel adjusted to the theoretical state of the air-fuel ratio of the exhaust emissions and performance Variety. The bio-n-butanol used in this study is Bio-butanol, named Butyl Propionate (BP) provided by Prof. Su Jiahong. According to the report of Prof. Su Jiahong, esterification reaction of butanol and propionic acid catalyzed by various lipases is carried out in a solvent-free system. Butyl propionate (BP) is a product of lignocellulose. Fermentation of cellulose, hemicellulose and lignin to bio-butanol using microorganisms. It is a colorless and fruity liquid that acts as a soluble nitrocellulose and solvent for natural and synthetic resins. And the response surface methodology (RSM) was used to optimize the process of esterification, and under the optimal reaction conditions, the efficiency of reusing biocatalyst was increased and the yield of butyl propionate (BP) Can effectively quantify the production of the future can be widely used to replace the limited fossil fuel. The experimental results show that butyl propionate was found to have negative effects on engine performance, although butyl propionate had more gasoline than gasoline. However, the heating value of butyl propionate and the heat of vaporization are lower than that of gasoline, and the performance will decrease under the theoretical air-fuel ratio. Compared with pure gasoline, CO emissions increased by an average of 1317.97%. Exhaust gas emissions HC increased by 24.84% on average compared to pure gasoline. The emissions of NOx are reduced by an average of 52.59% compared to pure gasoline. CO2 emissions have no effect when compared with pure gasoline at low concentrations, with an average reduction of 7.42%. Although carbon dioxide emissions at high concentrations show a downward trend, CO and HC emissions indicate that the fuel is burning poorly under the condition of a theoretical mixture ratio. In the state of the original injection pulse width, compared to pure gasoline, the torque increases by an average of 1.45%. Compared with pure gasoline, the emission of CO decreased by an average of 15.32%. Compared with pure gasoline, the exhaust emission HC decreased by an average of 20.78%. Compared with pure gasoline, the exhaust emission of NOx increased by an average of 5.09%. Compared with pure gasoline, CO2 emissions increased by an average of 7.09%. Therefore, the performance and exhaust emissions of bio-butanol under the original injection pulse width are better than that of gasoline.
|
|---|
