柴油机在工作过程中 ,由于使用不当或部件故障 ,转速会逐渐或突然降低而自行熄火 ,根据熄火时转速、所排烟色 ,可判断其故障原因。1 熄火时 ,柴油机转速逐渐降低 ,响声和烟色无异常变化　此故障多发生在燃油系。一般要检查燃油是否用完或油箱通气孔是否堵塞。此外 ,还要检查油 Diesel engine in the course of their work, due to improper use or parts failure, the speed will gradually or suddenly reduce their own turn off, according to turn off the speed, the exhaust color, you can determine the cause of the malfunction. 1 Turn off the fire, the diesel engine speed gradually decreased, no abnormal sound and smoke change This failure occurred in the fuel system. In general, check whether the fuel is used up or if the tank vents are clogged. In addition, check the oil