The Study of Bio fuel in Diesel Engine for Emissions characteristics and Combustion character
| Autor: | Chan-wei Huang, 黃建瑋 |
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| Rok vydání: | 2010 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 98 The main purpose of this research project aims to investigate the combustion characteristics of Biodiesel and blended with different ratio of Tyre Pyrolysis Oil (TPO) in a diesel engine. Researchers set up a combustion chamber and a four-stroke diesel engine with a dynamometer, observing its fuel-air ratio change and the concentration of emission gas, and explored the possibility of utilizing TPO as an alternative to diesel engine. In this study, the combustion characteristics of Biodiesel blended with different ratio of TPO were closely examined. In the experiment of Biodiesel, the researchers tested three different types of fuel respectively; that is, fuel (1) 100% Biodiesel, fuel (2) 90% Biodiesel blended with 10% TPO, and fuel (3) 80% Biodiesel blended with 20% TPO. Likewise, in the experiment of Diesel, the researchers also tested three types of fuel respectively namely fuel Researchers tested three different types of fuel (as mentioned above) at engine speed 2000rpm, 1700rpm, and 1400rpm with torque load (74Nt-m) and without any load in a single cylinder four-stroke diesel engine, observing the concentration of emission gas, and followed with theoretical models and analysis of thermodynamics to calculate the relationships of temperature, pressure, and crank angle. Results indicated that fuel (3) and under the condition of 2000rpm and torque load (74Nt-m), would cause the lowest emission (i.e., CO¬2 and NOX were the lowest). Besides, the efficiency of heat release of fuel (3) and were much higher than Biodiesel. Moreover, the polluted emission of fuel (3) and were found a bit lower than Biodiesel. On the other hand, under the condition of without any load, there was no significant change to the emission (CO¬2 and NOX), but the emission condition of Biodiesel would be much better than that of fuel (3). In the experiment of Diesel, the addition of TPO could not reduce the total amount of fuel consumption. Additionally, in regard to output torque, if we blended Diesel with TPO, the torque would increase prominently, especially when the revolution was at the highest speed setting (2000rpm). However, if we blended Biodiesel and Diesel with much higher ratio of TPO (i.e. with proportion around 60% or 70%), it might cause a great damage to the diesel engine. Therefore, blending with higher proportion of TPO would be out of the scope, and we are not going to dig in depth in this study. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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