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有的同志试验调整喷油泵时,不注意喷油泵供油始角的检查调整,只检查调整各缸的供油间隔角,并错误地认为:只要把喷油泵安装到发动机上以后,将供油提前角调整合适就行了。由于长期这样做,使喷油泵供油始角与规定值相差较大,供油规律改变,造成发动机燃烧不良、冒烟、工作粗爆等现象,影响发动机正常工作。喷油泵供油始角(见图)是指柱塞开始供油时,挺柱中心线与凸轮对称中心线的夹角(凸轮轴转角)。它决定了柱塞有效行程所对应的凸
Some comrades try to adjust the injection pump, pay attention to the starting angle of the fuel injection pump inspection adjustment, check only adjust the fuel supply interval angle of each cylinder, and mistakenly believe that: as long as the injection pump installed on the engine, the fuel supply Adjust the appropriate angle on the line. As a result of long-term, so that fuel injector starting angle and the provisions of a larger difference between the oil changes in the law, resulting in poor engine combustion, smoking, rough work and other phenomena, affecting the normal engine work. Fuel injection pump starting angle (see Figure) refers to the starting plunger when the plunger centerline and the symmetry of the cam centerline angle (camshaft angle). It determines the plunger effective stroke corresponding convex