作者在工作中发现,目前大多数运行中的船舶柴油机都存在冷却水温度太低、进出机温差过大的问题,如开式淡水冷却的出机温度为10～50℃,闭式冷却出机温度为50～60℃,进出机温差达30～40℃,远达不到说明书中规定的温度值,从而导致柴油机性能下降、燃油消耗率上升,机件过早损坏。究 The author found at work that at present most of the running diesel engines have the problem that the cooling water temperature is too low and the temperature difference between the entering and leaving machines is too large. For example, the opening temperature of the open fresh water cooling is 10 to 50 ° C, The temperature is between 50 and 60 degrees centigrade, the temperature difference between the entering and exiting machines is up to 30-40 degrees centigrade, far below the temperature value specified in the instructions, resulting in a drop in the performance of the diesel engine, an increase in the fuel consumption rate and premature failure of the machine parts. Study