【作者】 陆志思；

【导师】 冯冠东； 沈捷；

【作者基本信息】 广西大学 ， 动力机械及工程， 2003， 硕士

【摘要】 柴油机在不同运转工况下其排气污染物的排放量是不同的。为了在整个工况范围内研究车用增压中冷柴油机的经济性与排放性能，作者在柴油机稳定运转状态下，对YC4112Z_LQ（125KW／2300r／min）型直喷式增压中冷柴油机的72个工况点（8个转速，每个转速9个负荷点）作排放特性试验研究。分析了有效燃油消耗率及各主要排放污染物（NOx、PM、CO、HC、碳烟）的排放量随运转参数(转速n与平均有效压力p_me)的变化规律。指出NOx与PM是影响增压中冷柴油机排放达标的主要排放污染物，并绘制了排放综合特性图。这为该类型柴油机的性能分析提供了参考。 另外，还对该型柴油机的燃油经济性与排放特性进行综合分析，全面分析了该柴油机常用功率范围内的三个工况区域（低速工况、中间转速工况、高速工况）的经济性与排放性能，得出该柴油机与载重及工程用车配套具有优越性的结论。更多还原

【Abstract】 The exhaust emission of a diesel engine differs in different operating condition. In order to study the fuel-economy and exhaust emission performance of vehicle turbocharge-intercooled diesel engine on all steady operating conditions, on YC4112ZLQ D.I. turbocharge-intercooled diesel engine, 72 operating conditions(8 speeds, 9 loads per speed) were tested under steady operating condition. The author analyzes the change rules of fuel consumption and the mass of the main exhaust emission pollutants(NOx, PM, CO, HC and carbon) with the operating parameters(speed and load), points out that NOx and PM are the primary exhaust emission pollutants which affect the turbocharge-intercooled diesel engine to reach the requires of emission regulations, and map the figure of compositive exhaust emission characteristic. These can provide consult for the performance’s analysis of the type of diesel engine.Besides, the author synthetically analysizes it’s fuel-economy and exhaust emission characteristic, including three areas(low, medium and high speed conditions), and makes a conclusion that the diesel engine has superiority to be matched with the camion and mobile machinery shop.更多还原