不同比例甲醇柴油对柴油机循环变动的影响  

Effect of Different Proportion of Methanol Diesel Blended Fuel on Cycle-by-Cycle Variation of Turbocharged Diesel Engine

作　　者：王丁丁[1] 王铁[1] 冯星[1] 廖文蓉[1] 史伟奇[1] 邓永慧[1] 汪恒[1] 

机构地区：[1]太原理工大学车辆工程系,山西太原030024

出　　处：《小型内燃机与摩托车》2013年第1期60-64,96,共6页Small Internal Combustion Engine and Motorcycle

摘　　要：通过在4100QBZL柴油机上进行燃用柴油(0#)以及甲醇柴油混合燃料(M5、M10和M15)的试验,研究了4种燃料在中低转速不同负荷时对最高燃烧压力、平均指示压力、压力升高率峰值和燃烧始点等参数的循环变动的影响。结果表明:在1200r.min-1时,4种燃料的平均指示压力、燃烧始点的循环变动率随负荷的增加而减小。混合燃料随甲醇比例的增加,最高燃烧压力循环变动率逐渐升高,中高负荷时,混合燃料的压力升高率峰值的循环变动率低于0#柴油。2400r.min-1时,混合燃料的甲醇比例越高,最高燃烧压力、压力升高率峰值的循环变动率越大,平均指示压力循环变动率越低,燃烧始点的循环变动率变化不太明显。This paper studies the cycle-by-cycle variations of some parameters on the four-cylinder 4100QBZL diesel engine fueled with four different proportions of methanol diesel （0#, M5, M10 and MI5） at low and middle speeds and different loads. Some parameters are measured such as the maximum combustion pressure, indicated mean pressure, peak of pressure rise rate and crank angle value of start combustion to search the cy- cle-by-cycle variations. The result shows that the cycle-by-cycle variation coefficient of indicated mean pres- sure and crank angle value of start combustion decrease with load increasing at 1200r/min. With the propor- tion of methanol in blended fuels increasing, the cycle-by-cycle variation coefficient of the maximum combus- tion pressure is increasing gradually. The cycle-by-cycle variation coefficient of peak of pressure rise rate of the blended fuels is lower than 0# diesel oil at middle and high loads. With the proportion of methanol in blen- ded fuels increasing at 2400r/min, the cycle-by-cycle variation coefficients of the maximum combustion pres- sure and peak of pressure rise rate are higher but indicated mean pressure lower, and crank angle value of start combustion does not change obviously.

关 键 词：柴油机 甲醇柴油 循环变动 

分 类 号：TK428.9[动力工程及工程热物理—动力机械及工程]