拖拉机柴油发动机排气管积炭,使截面积减少,排气阻塞,是比较常见的故障。其现象是发动机排气冒黑烟。产生积炭的原因是,喷油泵油量过大,喷油嘴雾化不良,发动机供油提前角不正确和经常超负荷作业。进气充足与排气彻底对提高发 Tractor diesel engine exhaust pipe coke, cross-sectional area to reduce exhaust obstruction, is the more common fault. The phenomenon is black smoke exhaust engine. The reason for the coke production is that the fuel injection pump is too large, the nozzle atomization is poor, the engine oil supply advance angle is incorrect and often overload operation. Sufficient intake and exhaust completely improve the hair