Diesel engine cooling system in winter

1. After the engine is started, the temperature of the engine rises rapidly and the instantaneous temperature in the combustion chamber can reach over one thousand degrees Celsius. If cooling water is suddenly added to the tank at this time, parts such as the airframe, water tank, cylinder head, and vortex chamber can easily crack. The live race, connecting rods and other parts will also be deformed. The correct approach is to add about 80 °C hot water to the tank before starting. Second, the winter outdoor temperature is low, generally around 0 °C. There is still 80°C-90°C when the engine is just off. If you immediately let go of the cooling water, the difference between the machine temperature and the air temperature is too great. Water tanks, airframes, cylinder heads and other parts are easy to crack. Correct practice: The engine should be idled for 5-8 minutes, and the cooling water can only be released after the engine temperature drops to 50°C-70°C. Third, due to the existence of scale and impurities in the water release switch, the cooling water is often not released, and it will also cause the body to freeze. Therefore, when the water is released, the operator should carefully observe the discharge of the water at the side of the machine. If it is not smooth, the drain switch should be opened so that the cooling water in the body can be fully discharged. Fourth, open the water switch, can not put the cooling water in the water tank, a part of the cooling water remains in the waterway, there is still the possibility of freezing the body. Therefore, after putting the cooling water in the water tank, you should crank the crankshaft for dozens of turns in order to drain the water in the water channel. Fifth, agricultural tractors should have at least a simple carport to keep it out of the house outdoors. In cold weather, there must be a heat preservation curtain and put it down. In this way, one can prevent the machine from being rusted, and the other can increase the machine temperature. The next day, the heating time The temperature will not drop sharply and the engine will start easily. This is one of the measures to extend the service life of the locomotive.

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