Engineering machinery diesel engine fuel supply characteristic curve of the research工程机械柴油机燃油系供油特性曲线的讨论摘要柴油机本身的速度特性不能满足大多数工程机械特别工况的要求，因为其扭矩曲线比较平坦，当负载有少量变化时柴油机转速就会有波动，柴油机在低速时会熄火，在高速时会“飞车”。这对柴油机的正常运转不利，因此柴油机需装设调速器，调速器可根据负载的变化，自动调节供油量，从而使柴油机保持在所要求的转速下稳定运转。而讨论柴油机燃油系供油特性曲线对认识和改进调速器的性能都有至关重要的意义。首先，通过在喷油泵实验台上进行调试、试验猎取数据，进行分析，从而绘制出曲线。然后通过调试燃油系几个主要参数，讨论曲线的变化趋势，找出其对柴油机动力性、经济性及尾气排放的影响。提出改进方案，在转速不变的情况下，改变齿条行程，从而节约燃料。最后对新特性曲线进行可靠性分析。关键字：调速器 调速特性曲线 喷油泵转速 齿条行程 调速螺钉 Abstract The speed of the engine itself can not meet the characteristics of the requirements of the most engineering machinery, because the torque curves are relatively flat, when load change with a small amount of the diesel engine speed can be big fluctuations, diesel engine in low speed will stall, at high speed galloping. This to the normal operation of diesel engine is adverse, so diesel engine installed governor should, according to the change of load of governor, automatic adjust the flow of, so as to make the diesel engine in the speed of the requirements to keep the stable operation. And the study of diesel engine fuel supply characteristic curve and improve to know the performance of the governor have crucial significance.First, through the experiment in fuel injection pump on commissioning, test for data, to carry on the analysis, thus rendering the curve. Then through the debugging main parameters of fuel, study the shape of the curve trend, find out the on diesel engi...
