The fuel-air mixing processes affect on the combustion performance and the exhaust emission. Thus it is very important to know how evaporated fuel is being mixed with air in engine cylinder. One of the measurement techniques for vapor phase is the Exc...
The fuel-air mixing processes affect on the combustion performance and the exhaust emission. Thus it is very important to know how evaporated fuel is being mixed with air in engine cylinder. One of the measurement techniques for vapor phase is the Exciplex fluorescence visualization technique. The base fuel and the dopant were used 99.5% hexane and 0.5% fluorobenzene in volume ratio respectively.<br/>
The results were presented with excess air ratio and elapsed time after fuel evaporation at constant temperature(473K) and pressure(0.5MPa). Fluorescence intensity emitted from dopant was decreased with increase of excess air ratio. Temporal change of fluorescence intensity at constant ambient condition decreased slightly within the range of measured time. 2-dimensional images were also illustrated with excess air ratio.<br/>