检修110型柴油机,有时无论是空转还是负荷运转,都有冒黑烟的现象。当把引起冒黑烟的常见故障原因排除后(如检查气门间隙、喷油压力及雾化情况、供油时间是否过迟、供油量是否过多及空气滤清器是否堵塞等),仍不能排除冒黑烟。经认真研究、检查,发现故障发生在喷油泵上。即将油泵柱塞定位螺钉上的一个一毫米厚的垫片脱 Maintenance of 110 diesel engine, sometimes idling or load operation, have black smoke phenomenon. When the cause of common black smoke caused by troubleshooting (such as checking the valve clearance, injection pressure and atomization, the fuel supply time is too late, the fuel supply is too much and the air filter is blocked, etc.), still Can not rule out black smoke. After careful study, inspection and found that the fault occurred in the fuel injection pump. About a millimeter thick pad on the pump plunger set screw