不同大气压力下B10生物柴油混合燃料对柴油机性能的影响  

Effects on Performance of a Diesel Engine Fueled with B10 Biodiesel Blend Under Different Atmospheric Pressures

作　　者：贺璟[1] 颜文胜[1] 李宏[1] 申江卫[1] 

机构地区：[1]昆明理工大学交通工程学院,云南昆明650224

出　　处：《昆明理工大学学报（自然科学版）》2013年第6期74-77,共4页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：国家自然科学基金项目(50866002)

摘　　要：为了探索掺烧生物柴油后大气压力对柴油机性能的影响和变动规律，在高压共轨柴油机上进行了不同大气压力下燃用纯柴油与B10混合燃料的对比试验研究．试验结果表明：随着大气压力升高，两种燃料的动力性均呈上升趋势，有效燃油消耗率和排气温度均呈下降趋势；气压从100kPa下降至81kPa时，外特性的中、高转速区域动力性下降0．7％～3．1％，中、低转速区域动力性下降2．9％～17．8％；在相同气压下，燃用B10混合燃料的动力性比纯柴油时下降0．7％～2．6％，有效燃油消耗率上升0．7％～3．5％．In order to explore the changing rules and influence of atmospheric pressure on performance of the diesel engine while burning blended fuel with bio - diesel, the comparative experiments are carried on between pure diesel oil and B10 bio - diesel blended fuel on the bench of high - pressure common rail diesel engine under different atmospheric pressures. The results indicate that the power performance is increasing along with the ris- ing of atmospheric pressure, and the brake specific fuel consumption and exhaust temperature is dropping. With the dropping of atmospheric pressure from 100kPa to 81kPa, there is a 0.7% -3.1% dropping on power per- formance when the engine runs at middle or high rotation speed. When the engine runs at lower or middle rota- tion speed, the power performance declines by 2. 9% - 17.8%. Compared with burning diesel, the power char- acteristics of diesel engine using B10 declines by O. 7% -2.6% , while brake specific fuel consumption increa- ses by 0. 7% -3.5%.

关 键 词：大气压力 高压共轨柴油机 生物柴油 性能 

分 类 号：TK428.9[动力工程及工程热物理—动力机械及工程]