| 燃油温度对化油器燃油流量系数的影响 |
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| 引用本文： | 张学平,王小兵,刘晓凌,宁乐. 燃油温度对化油器燃油流量系数的影响[J]. 西安理工大学学报, 2011, 27(1): 51-55 |
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| 作者姓名： | 张学平 王小兵 刘晓凌 宁乐 |
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| 作者单位： | 西北工业大学第365研究所,陕西西安,710065 |
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| 基金项目： | 国家863计划基金资助项目 |
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| 摘 要： | 现代小型无人机一次飞行过程中大气温度变化量可以达到80℃左右.为追求发动机合理的空燃比和飞行效费比,测量了燃油粘度-温度特性,并利用计算及试验法,研究了小型无人机发动机使用纯汽油或混合油温度在-40℃～+40℃条件下,其粘度-温度特性对化油器各量孔燃油流量系数的干扰力度.研究结果表明,当燃油温度变化量在80℃范围内时,...
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| 关 键 词： | 无人机 汽油发动机 化油器 燃油运动粘度 流量系数 |
Influence of Fuel Temperature on the Fuel Flux Coefficient for Small UAV Engines Carburetor |
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| ZHANG Xueping,WANG Xiaobing,LIU Xiaoling,NING Le. Influence of Fuel Temperature on the Fuel Flux Coefficient for Small UAV Engines Carburetor[J]. Journal of Xi'an University of Technology, 2011, 27(1): 51-55 |
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| Authors: | ZHANG Xueping WANG Xiaobing LIU Xiaoling NING Le |
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| Affiliation: | ZHANG Xueping,WANG Xiaobing,LIU Xiaoling,NING Le (365 Institute of Northwest Polytechnical University,Xi'an 710065,China) |
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| Abstract: | The variation of the environmental air temperature during a one-time-flight of modern small UAVs can be up to 80 ℃.To achieve an optimal air to fuel(A/F) and flight efficiency to cost(F/C) ratios,the fuel viscosity-temperature characteristics of UAV engines are studied.With resort to calculation and experimental methodologies,viscosity-temperature properties between-40℃ ～+40℃ of the UAV engines utilizing pure gasoline or blended fuel are explored regarding to their influences on the fuel flux coefficient at different carburetor metering jets.It is demonstrated that in our UAV engines,the carburetor fuel flux coefficient can be approximately changed by 10 percent when the fuel temperature varies with 80℃.As a result,fluctuation of fuel viscosity should be taken into account to evaluate the carburetor fuel flux coefficients. |
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| Keywords: | UAV gasoline engine carburetor fuel motion viscosities flow coefficient |
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