摘要
为了为生物柴油发动机混合比的合理选择提供参考依据,在不改变发动机结构参数的情况下,通过发动机性能试验分析了不同工况下的发动机功率、油耗量、油耗率及CO、HC、NOx、PM、SOF、DS排放浓度等指标,研究了8种不同混合比的生物柴油对发动机动力性、经济性及排放性能的影响,为生物柴油混合比的合理选择提供参考依据。结果表明:生物柴油混合燃料与0#石化柴油的发动机功率和扭矩变化趋势大致相同,随着生物柴油混合比的增大发动机功率和扭矩有所下降,当混合比小于20%时对发动机动力性的影响很小;同时全负荷工况下的燃油消耗量和燃油消耗率逐渐增加,但增加的幅度较小,生物柴油的燃油经济性与石化柴油相差不大;CO、HC、PM、SOF、DS以及碳烟的排放浓度大幅降低,NOx的排放浓度略有增加。
To provide some references for the selection of proper mixing ratio of the biological diesel engine,under the condition of not changing the structural parameters of the engine, while conducting the engine performance tests, the authors analyzed such indices as the engine power, consumption of fuel oil, consumption rate, emission concentration of CO, HC, NOx, PM, SOF, DS of the engine under different conditions, and studied the effects caused by the biodiesel with eight different mixture ratios on the power, economy and emission performance of the engine. The purpose was to provide reference data for the reasonable selection of the mixture ratio of the biodiesel. The results show that the changing trends of the engine power and torque when biodiesel mixing fuel was applied are roughly the same as those when 0#petrochemical diesel oil was used. Following the increase of the mixture ratio of biodiesel, the engine power and the torque decreased by a small amount. When the mixture ratio was less than 20%, the effects on engine power were slight;simultaneously, under the condition of a full load, the consumption and the consumption rate of the fuel oil increased gradually, however, the range of increase was small. The biodie-sel and petrochemical diesel were similar in economy;the emission concentration of CO, HC, PM, SOF, DS and soot were reduced greatly, and the emission concentration of the NOx increased slightly.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2014年第2期189-194,共6页
Journal of Harbin Engineering University
基金
长春市国际科技合作计划资助项目(09YJ19)
关键词
生物柴油
发动机性能试验
发动机功率
排放浓度
油耗率
biodiesel
engine performance test
engine power
emission concentration
fuel consumption rate
