What is the normal water temperature of diesel vehicles?

When the working temperature of the engine is lower than 70°C, the thermostat automatically closes the channel leading to the radiator and opens the channel leading to the water pump. The cooling water flowing out of the water jacket enters the water pump, which sends it to the water jacket for circulation. The work temperature of that engine can be rapidly increased.

When the working temperature of the engine is higher than 80°C, the thermostat automatically closes the passage to the water pump and opens the passage to the radiator. The cooling water flowing out of the water jacket is radiated by the radiator and then pumped to the water jacket by the water pump. Improve the cooling intensity and prevent the engine from overheating.

When the working temperature of the engine is between 70℃ and 80℃, large circulation and small circulation exist at the same time, that is, some cooling water circulates in large circulation and the other cooling water circulates in small circulation.

Extended data

The function of automobile thermostat is to be closed before the automobile temperature reaches normal temperature. At this time, the engine coolant returns to the engine through the water pump, and makes a small circulation in the engine to make the engine warm up quickly. When the temperature exceeds the normal temperature, it can be turned on, so that the cooling liquid can circulate in the whole cooling circuit of the water tank and dissipate heat quickly.

The travel of the water thermometer is 0-0-130 C, and the normal temperature is 90 C. After the vehicle starts, the water temperature rises rapidly. After the pointer reaches the center position, the water temperature no longer rises. Generally speaking, the best start is when the temperature reaches the middle position.