| Summary: | 碩士 === 國立中山大學 === 環境工程研究所 === 103 === This study investigated the steady-state gasoline engine performances mixed with hydrogen and bioethanol fuels using dynamometer testing under various speeds, including idling, urban areas speed of 40 km/h, suburban speed of 70 km/h, and high-speed of 100 km/h.
The experimental results showed that the bioethanol–gasoline blends had the best reductions of THC and CO by 90.5% and 42.1%, respectively, at the speed of 40 km/hr reduced; but NOx emissions increased at high temperatures.
Additionally, bioethanol–gasoline blends at hydrogen flow rate of 0.6 lpm and 1.2 lpm showed higher reductions of THC and CO by 95.5% and 58.3%, respectively. Furthermore, NOx emission was increased due to higher flame speed and better combustion efficieny.
Under the federal test procedure-75 (FTP-75), the results showed that the blends of bioethanol–gasoline had the best reductions of THC and CO by 23.7% and 35.6%, respectively. Moreover, the results of bioethanol–gasoline blends at hydrogen flow rate of 0.6 lpm and 1.2 lpm showed higher reductions of THC and CO by 61.5% and 47.0%, respectively.
Results also indicated that the more bioethanol added, the more fuel consumed, due to low heating value of bioethanol. Nevertheless, the addition of hydrogen effectively improved fuel consumption, and better fuel reduction cab be achieved at hydrogen flow rate of 1.2 lpm.
|
|---|
