| 生物柴油缸内燃烧火焰温度对NOx生成的影响 |
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| 引用本文： | 毛功平,王忠,梅德清,倪培永.生物柴油缸内燃烧火焰温度对NOx生成的影响[J].内燃机工程,2011,32(3). |
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| 作者姓名： | 毛功平 王忠 梅德清 倪培永 |
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| 作者单位： | 江苏大学汽车与交通工程学院,镇江,212013 |
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| 基金项目： | 国家自然科学基金项目，江苏省高校自然科学重大基础研究项目，江苏大学高级专业人才科研启动基金项目 |
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| 摘 要： | 采用内窥镜高速摄影的方法,拍摄了柴油机燃用不同比例生物柴油-柴油调合燃料燃烧火焰的图像.基于亮度测温法的原理,计算了火焰的温度场分布.根据NOx生成的特点,提出了针对NOx生成的火焰温度评价指标:NOx生成区域的瞬态火焰面积、火焰面积变化速率、火焰面积平均变化速率、温度区域持续期、火焰面积出现效率,分析了评价指标随发动机转速、生物柴油调合比例的变化规律.研究结果表明:随着生物柴油添加比例和转速的增大,燃用B50和B100的NOx生成区域的火焰面积出现时刻和消失时刻提前,提前程度在高转速时较大,区域的峰值不断增大,对应的位置逐渐提前,火焰面积变化速率和火焰面积平均变化速率的峰值均不断增大,出现效率不断增大,持续时间逐渐缩短,这说明随着生物柴油调合比例的增大,缸内出现了有利于NOx生成的环境.
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| 关 键 词： | 内燃机 柴油机 生物柴油 火焰温度 NOx排放 评价指标 |
Effect of Biodiesel Combustion Flame Temperature on NOx Formation in Diesel Engine |
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| MAO Gong-ping,WANG Zhong,MEI De-qing,NI Pei-yong.Effect of Biodiesel Combustion Flame Temperature on NOx Formation in Diesel Engine[J].Chinese Internal Combustion Engine Engineering,2011,32(3). |
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| Authors: | MAO Gong-ping WANG Zhong MEI De-qing NI Pei-yong |
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| Affiliation: | MAO Gong-ping,WANG Zhong,MEI De-qing,NI Pei-yong(School of Automobile and Traffic Engineering,Jiangsu University,Zhenjiang 212013,China) |
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| Abstract: | Images of combustion process of the engine fueled with diesel and biodiesel blends in different mixing ratio were captured by End Scope high-speed photography.Based on luminance of in-cylinder combustion flame pictures,the flame temperature distribution was computed.The physical and chemical characteristic parameters of flame temperature in cylinder and their changing laws with engine speed and biodiesel fuel mixing ratio were also analyzed using five indexes,NOx formation flame area(SNO),flame area change ... |
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| Keywords: | IC engine diesel engine biodiesel fuel flame temperature NOx emission evaluating index |
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