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当前位置: 首页 > 文章 > 高原环境下含氧燃料对柴油机工作特性的试验研究 农业装备与车辆工程 2018 (3) 6-11
Position: Home > Articles > Study on Oxygenated Fuel on Diesel Engine Performance under High Altitude Agricultural Equipment & Vehicle Engineering 2018 (3) 6-11

高原环境下含氧燃料对柴油机工作特性的试验研究

作  者：
江鹏;毕玉华;尹升;刘少华;申立中
单  位：
昆明理工大学云南省内燃机重点实验室
关键词：
柴油机;含氧燃料;性能;高原
摘  要：
为了研究高原环境下含氧燃料对发动机工作特性的影响,将生物柴油、乙醇和纯柴油以一定比例混合成混合燃料,选取B15E5(燃料占比15%,乙醇占比5%)作为燃料,测量了理化特性。以高压共轨柴油机为对象,在80 k Pa(海拔1 900 m)大气压力下,采用定扭矩的方法,进行了燃用B15E5燃料和纯柴油试验,对其经济性、燃烧特性以及排放特性进行了对比研究。研究结果表明:相较于纯柴油,B15E5燃料不利于经济性的改善,在最大扭矩转速工况下,有效燃油消耗率平均增幅为6.2%;在额定功率转速工况下,有效燃油消耗率平均增幅为5.2%。相较于纯柴油,B15E5燃料使柴油机HC、CO和烟度的排放降低,在最大扭矩转速工况下,平均降幅分别为10.7%,8.5%,41.8%;在额定功率转速工况下,平均降幅为42.4%,18%,45.6%;NOx的排放有增加的趋势。相较于纯柴油,最大气缸压力有所下降,在最大扭矩转速工况下,降幅为14.7%;在额定功率转速工况下,降幅为20.4%。相较于纯柴油,放热率的峰值有所下降,在最大扭矩转速工况下,降幅为5.6%;在额定功率转速工况下,降幅为22.8%。
译  名：
Study on Oxygenated Fuel on Diesel Engine Performance under High Altitude
作  者：
Jiang Peng;Bi Yuhua;Yin Sheng;Liu Shaohua;Shen Lizhong;Kunming University of Science and Technology, Yunnan Provincial Key Laboratory of IC Engine;
关键词：
diesel engine;;oxygenated fuel;;performance;;high altitude
摘  要：
In order to study the effect of oxygenated fuel on engine performance under high altitude, biodiesel, ethanol and pure diesel fuel are mixed in certain proportion. B15 E5(biodiesel accounted for 15%, ethanol for 5%) selected as a fuel, the physical and chemical properties are measured. With high pressure common rail diesel engine as an object, B15 E5 and pure diesel were tested to study economy, combustion and emission characteristic in 80 k Pa(at an altitude of 1 900 m). The result shows that B15 E5 is not helpful for the improvement of the economy, and the effective fuel consumption average growth is 6.2% in the maximum torque speed conditions; the effective fuel consumption average growth is 5.2% in standard speed conditions. And it makes HC, CO and smoke emissions of the diesel engine reduce, with average decline of 10.7%, 8.5%, 41.8% in the maximum torque speed conditions, and average decline of 42.4%, 18%, 45.6% in standard speed conditions. The NOx emission is increasing. The maximum cylinder pressure has decreased, with a decrease of 14.7% in the maximum torque speed, and 20.4% in the standard speed working conditions. The peak of exothermic rate decreased, with a decrease of 5.6% in the maximum torque speed condition, and 22.8% in the standard speed conditions.

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