柴油机水温过高,将会使润滑油变稀、变质而造成润滑不良,活塞卡死及擦伤而损坏,气缸进气量减少使发动机功率下降等;如过低,将使热量损失过多而功率不足,因柴油不能充分燃烧使耗油量增加且积炭增多,润滑油粘度过大、流动性差而导致润滑不良、将加速零件磨损,在冬季起动困难及冒白烟等。所以,在拖拉机的使用说明书中,对柴油机工作中的水温都有严格的规定,如手扶拖拉机水温应保持在60～100℃之间,东方红-54拖拉机应保持在75～95℃之间。水温的过高 Diesel engine water temperature is too high, will make the oil thinning, deterioration caused by poor lubrication, piston stuck and bruised damage, reduced cylinder intake to reduce engine power, etc .; such as too low, will make the heat loss too much Insufficient power, because diesel can not be fully burned to increase fuel consumption and carbon deposition increased, the viscosity of lubricating oil is too large, poor mobility and poor lubrication, will accelerate the wear and tear of parts, start in winter difficulties and take white smoke. Therefore, the manual in the tractor, the water temperature in the work of diesel engines have strict rules, such as walking tractor water temperature should be maintained at between 60 ~ 100 ℃, DF-54 tractors should be maintained at between 75 ~ 95 ℃ . Water temperature is too high