联合收割机不论是“自走式”还是“背负式”，其动力都是马力较大的柴油机车，收割作业时的火灾危险主要有： １、排气管喷火。联合收割机机车柴油发动机排气管的废气温度很高，并常常带有积炭火星，不仅排气管本身可以直接烤着积聚在管上的可燃物，而且喷出的火星（炽热的炭粒 Combine harvester, whether it is “self-propelled” or “knapsack”, its power is a larger horsepower diesel locomotive, harvesting operations are mainly the risk of fire: 1, the exhaust pipe flame. Combine harvester locomotives Diesel engine exhaust pipe exhaust temperatures are high, and often with a coke Mars, not only the exhaust pipe itself can directly grilled combustible material accumulated in the tube, and the jet of Mars (hot carbon particles