1, pay attention to fuel selection
The low temperature in winter makes it easy for the diesel engine to cool excessively during operation, so insulation is the key to using diesel engines in winter. In the northern region, diesel engines used in winter should be equipped with insulation devices such as insulation jackets and insulation curtains.
2, pay attention to the body insulation
The low temperature in winter makes it easy for the diesel engine to cool excessively during operation, so insulation is the key to using diesel engines in winter. In the northern region, diesel engines used in winter should be equipped with insulation devices such as insulation jackets and insulation curtains.
3, pay attention to the water is not too early
The diesel engine should be operated at idle speed before the flameout. When the temperature of the coolant drops below 60 °C, the coolant is not hot, then the flame is extinguished and the coolant is discharged. If the coolant is discharged prematurely, the body will suddenly shrink and crack when it is attacked by cold air at a high temperature. When the coolant is discharged, the residual coolant in the body should be completely discharged to prevent the ice from expanding and causing the body to burst.
4, do not use the open flame to help start
Some drivers remove the air filter when the engine is difficult to start in winter, and use a cotton yarn to ignite the diesel oil to make a igniting object to be placed in the intake pipe to perform a combustion-supporting start. In this way, during the starting process, the external dusty air will directly inhale into the cylinder without filtering, causing abnormal wear of pistons, cylinders, etc., and the diesel engine will be rough and damage the machine. Therefore, do not use an open flame for combustion-supporting. .
5, do not use an open flame to bake the oil sump
Baking the oil sump with an open flame can degrade or even burn the oil in the oil sump, and the lubrication performance is reduced or completely lost, thereby aggravating machine wear. Therefore, in the winter, low-condensation point oil should be used. When starting, the temperature of the oil can be increased by using the external water bath heating method. The method of bake the oil sump with open flame cannot be used to increase the oil temperature.
6, start the engine correctly
In order to be able to start the engine quickly in winter, some drivers often use an abnormal starting method without coolant starting (starting first, then adding coolant). This practice can cause serious damage to the machine and should be banned. The correct preheating method is: first cover the heat preservation cover on the radiator, open the drain valve, continuously inject 60 ~ 70 °C clean soft water into the radiator, and touch the water flowing out of the drain valve to feel the hot feeling, then turn off the water. Valve, add 90 ~ 100 °C clean soft water to the radiator, and shake the crankshaft, so that the moving parts are properly pre-lubricated, and then start again.
7. Don't rush to start after the engine starts.
The engine that has just started is low in the body temperature, the viscosity of the oil is large, and the oil is not easily charged into the friction surface of the moving pair. If the car is rushing to start, immediately put into the load, it will cause serious wear and tear on the machine. In addition, the plunger spring, the valve spring and the injector spring are also susceptible to breakage due to "cold brittleness". Therefore, after the diesel engine starts to ignite in winter, it should be idling at a low medium speed for a few minutes, and when the coolant temperature reaches 50 °C, it starts to run again.