Winter has arrived, how to warm the car and engine through the winter?

In the deep winter, especially in the northern region, you are smart enough to hide in thick cotton-padded clothes. Hey, don't be so selfish, and your car and engine, they are also afraid of the cold.

The sudden drop in temperature has a great impact on driving. For the vehicle and engine, it is particularly important to replace various oils and check electrical equipment in time. dongfeng cummins for the majority of riders to tidy up the following maintenance knowledge, we hope to help.

Replace all kinds of oil

(1) Use fuel with low freezing point and good fluidity. At low temperatures, the viscosity of the fuel increases, the fluidity becomes worse, and the atomization is poor, which easily deteriorates the combustion process of the fuel, and the startability, power, and economy of the engine are significantly reduced. Therefore, the freezing point should be selected under conditions. Low fuel. The general selection principle is that the freezing point of the fuel is about 5 ℃ lower than the ambient temperature.

(2) Change the oil. Choose a lower viscosity engine oil. Under low temperature conditions, the viscosity of the engine oil increases as the temperature drops, and the fluidity becomes worse. Therefore, the lower viscosity oil should be replaced in time to make up for or eliminate this adverse effect. According to the table below to choose the appropriate viscosity level of oil (be sure to see oh).

(3) Replace all kinds of lubricating oil and grease used in winter. In winter, the transmission, main reducer, steering gear, etc. should be replaced with winter lubricating oil, and the wheel hub bearing should be replaced with low-drop grease.

Servicing the engine cooling system

(1) Check the working condition of the thermostat. Ensure that the thermostat works well and prevent the engine water temperature from being too low or too high. If the engine is often run at low temperature, it will lead to increased wear of mechanical parts.

(2) Remove the scale in the water jacket. Clean the engine water jacket to remove internal scale to prevent excessive scale accumulation, which will affect the heat dissipation of the engine and cause the engine temperature to be too high. If the scale blocks the water drain switch, the water drain will not be clean.

(3) Fill antifreeze. When the temperature is too low and conditions permit, antifreeze can be used. The cooling system should be thoroughly cleaned before use, and antifreeze with good quality and low corrosion should be selected to avoid the phenomenon of corrosion of machine parts due to the poor quality of antifreeze. occur.

Maintenance of electrical equipment

(1) Check and adjust the electrolyte density. The electrolyte density can be appropriately adjusted to prevent the accident of freezing and cracking of the battery shell due to the low electrolyte density.

(2) increase the generator charging voltage. As the battery discharge increases at low temperatures, the generator charge must be increased, and the regulator limit voltage can be appropriately increased. Generally, the limit voltage of the regulator in winter is 0.6V higher than that in summer.

(3) Maintain the starter. In winter, there may be failures such as difficulty in starting the engine and frequent use of the starter. If the starter power is insufficient, it will further increase the difficulty of starting the engine.

Practice has shown that in summer, if the starter has a slight failure and the power is slightly insufficient, starting the engine may be smooth, but in winter it will become very difficult to start, or even unable to start.

Therefore, the starter should be thoroughly maintained to keep all parts of the starter clean and dry, especially good contact between the brush and the commutator.

(4) strengthen the battery insulation. In order to prevent the battery from freezing and affecting the starting performance, a sandwich insulation battery box can be made for the battery in winter to improve the temperature of the battery.

Maintenance of preheating device

For the engine with preheating device, the preheating equipment shall be inspected and maintained before winter to ensure good technical condition. During maintenance, focus on checking the circuit and oil circuit to prevent the poor operation of the preheating device from affecting the startability of the engine.