TY - JOUR
T1 - Measurements of the Evaporation Behavior of the Film of Fuel Blends
AU - Liang, Zhengxing
AU - Yan, Junhao
AU - Li, Gang
AU - Lee, Timothy
AU - Zhang, Li
AU - Lee, Chia Fon
N1 - This material is based upon work partially supported by the Department of Energy, Office of Energy Efficiency and Renewable Energy (EERE) and the Department of Defense, Tank and Automotive Research, Development, and Engineering Center (TARDEC), under Award Number DE-EE0007309. Any opinions, findings, and conclusions or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the Department of Energy. This work was also partially supported by China Scholarship Council (NO. 201606050055).
PY - 2018
Y1 - 2018
N2 - The formation of fuel film in the combustion cylinder affects the mixing process of the air and the fuel, and the process of the combustion propagation in engines. Some models of film evaporation have been developed to predict the evaporation behavior of the film, but rarely experimental results have been produced, especially when the temperature is high. In this study, the evaporation behavior of the film of different species of oil and their blends at different temperature are observed. The 45 μL films of isooctane, 1-propanol, 1-butanol, 1-pentanol, and their blends were placed on a quartz glass substrate in the closed temperature-controlled chamber. The shape change of the film during evaporation was monitored by a high-speed camera through the window of the chamber. First, the binary blends film of isooctane and one of the other three oils were evaporated at 30 °C, 50 °C, 70 °C and 90 °C. Secondly, the pure films of isooctane, 1-propyl alcohol, 1-butanol and 1-pentanol were evaporated at 90 °C. Finally, after the data processing in Matlab, the data of the volume change, average thickness, and maximum thickness were obtained. The results also showed that there would be three evaporation periods according to different volumetric evaporation rates. With the increase of temperature, the first period would have a higher percentage of the whole evaporating volume of film. The evaporation behaviors were similar for Pr50 (50% isooctane and 50% 1-propanol) when the temperatures are 70 °C and 90 °C. Additionally, the evaporation behaviors were similar for Pr50 and B50 (50% isooctane and 50% 1-butanol) when the temperature is at 90 °C. Although there were small differences of the boiling points between 1-propanol and isooctane, the isooctane evaporated faster because of its higher vapor pressure and lower latent heat.
AB - The formation of fuel film in the combustion cylinder affects the mixing process of the air and the fuel, and the process of the combustion propagation in engines. Some models of film evaporation have been developed to predict the evaporation behavior of the film, but rarely experimental results have been produced, especially when the temperature is high. In this study, the evaporation behavior of the film of different species of oil and their blends at different temperature are observed. The 45 μL films of isooctane, 1-propanol, 1-butanol, 1-pentanol, and their blends were placed on a quartz glass substrate in the closed temperature-controlled chamber. The shape change of the film during evaporation was monitored by a high-speed camera through the window of the chamber. First, the binary blends film of isooctane and one of the other three oils were evaporated at 30 °C, 50 °C, 70 °C and 90 °C. Secondly, the pure films of isooctane, 1-propyl alcohol, 1-butanol and 1-pentanol were evaporated at 90 °C. Finally, after the data processing in Matlab, the data of the volume change, average thickness, and maximum thickness were obtained. The results also showed that there would be three evaporation periods according to different volumetric evaporation rates. With the increase of temperature, the first period would have a higher percentage of the whole evaporating volume of film. The evaporation behaviors were similar for Pr50 (50% isooctane and 50% 1-propanol) when the temperatures are 70 °C and 90 °C. Additionally, the evaporation behaviors were similar for Pr50 and B50 (50% isooctane and 50% 1-butanol) when the temperature is at 90 °C. Although there were small differences of the boiling points between 1-propanol and isooctane, the isooctane evaporated faster because of its higher vapor pressure and lower latent heat.
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U2 - 10.4271/2018-01-0290
DO - 10.4271/2018-01-0290
M3 - Conference article
AN - SCOPUS:85045442816
SN - 0148-7191
VL - 2018-April
JO - SAE Technical Papers
JF - SAE Technical Papers
T2 - 2018 SAE World Congress Experience, WCX 2018
Y2 - 10 April 2018 through 12 April 2018
ER -