Investigation of Various Fuels on HCCI Small Scale Engine
| Autor: | Yung-Hsiang Hsu, 許永祥 |
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| Rok vydání: | 2016 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 104 HCCI engine combines advantage of high efficiency of diesel engine with low emission of spark ignition engine. But it is very difficult to control the combustion of HCCI engine, which operating region can not be applied to road driving. Combustion characteristics of the HCCI engine is extremely important so the research discusses the combustion characteristics. In this paper, the use of 125 cc single-cylinder air-cooled four-stroke gasoline engine. In order to can easily operate in HCCI engine, so replacement for 150 cc of the cylinder. The compression ratio and the compression temperature are increased, so that the fuel is easy to combustion. Combustion analysis contains the maximum cylinder pressure, maximum heat release rate, CA50 and so on. The experimental results show that DME, kerosene and n-heptane are low-octane fuel. It appears two-stage heat release phenomenon. If only using a single fuel occur not stable operation due to the heat release rate is advance and premature explosion shock. Using dual-fuel such as DME, kerosene and n-heptan with RON 92 or RON 95 can delay the maximum cylinder pressure, heat release rate of occurrence. When the load increases, it certainly needs to supply more fuel. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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