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Harm and elimination of engine overheating in graduation thesis
Engine overheating is a common fault, which will reduce the power generation and economy of the engine, and even damage parts in serious cases, so such faults should be eliminated in time. Taking Santana car as an example, this paper introduces the "four-step method" to eliminate the fault of excessive engine temperature;

look

If it is found that the temperature is too high or the temperature indicator is flashing all the time, stop to check whether the cooling water in the water tank is normal and whether there is leakage in the water tank, water pipes and connectors. If no abnormality is found in the visual inspection, the cooling water can be replenished as required before driving. If the temperature is still too high after driving for a certain distance, the cooling water is greatly reduced after parking inspection, which is mostly due to sand holes or perforations in the water jacket of the cylinder block. After this kind of fault is discovered, it should be repaired and should not be taken lightly.

Elmo

When the engine temperature is too high, you can judge the fault by touching the temperature of the upper pipe and the underwater pipe by hand. If the temperature difference between the two water pipes is large, it can be judged that the thermostat is not working. If you can't buy accessories on the way, you can take down the thermostat for emergency and replace it immediately after returning to the unit.

third-party

If there is air in the cooling system, air resistance will be formed, resulting in poor circulation of cooling water and excessive engine temperature. You can deflate the air in the following ways: let the engine run at high speed, and gently unscrew the water tank cover until the air is just released. At this time, a part of cooling water will flow out with the air, and this will be repeated many times until the air is exhausted (at this time, the temperature of the upper and lower pipes will be obviously different when touched by hand). After troubleshooting, the cooling water should be replenished in time.

Sichong

If the vehicle runs on dirt roads or muddy roads for a long time, some dirt will stick to the radiator, which will affect the heat dissipation effect over time and cause the water temperature to be too high. You can blow the radiator grille with compressed air first, and then rinse it with water pipes.