Where is BYD g3 thermostat?

The thermostat is located in the pipe between the sewer pipe and the engine. Pull out the pipe and you will see the thermostat.

The delicate paraffin in the thermostat temperature sensor is solid, the thermostat valve closes the passage between the engine and the radiator under the action of the spring, and the coolant returns to the engine through the water pump and circulates in the engine. The thermostat automatically adjusts the amount of water entering the radiator according to the temperature of cooling water, changing the circulating range of water, thus adjusting the cooling capacity of the cooling system and ensuring the engine to work in a suitable temperature range. The thermostat must be kept in good technical condition, otherwise it will seriously affect the normal work of the engine.

How to judge whether the thermostat is effective;

1, observe the coolant flow:

When the engine is running cold, if there is coolant flowing out of the upper water pipe of the water tank, it means that the thermostat valve cannot be closed; When the temperature of the coolant exceeds 70 degrees, there is no cooling water in the upper water pipe of the water tank, which means that the thermostat cannot be opened normally.

2, soaking method to check the thermostat:

Remove the thermostat from the engine and put it in hot water. When the water temperature is higher than 70 degrees, observe whether the valve is open or whether the opening height meets the requirements. For example, the opening temperature of the thermostat of Dongfeng Tianlong engine should be 76 ~86 degrees, and the maximum opening gap of the thermostat valve is 8 mm ~ 9 mm If it is found that the thermostat cannot be opened or the opening gap is abnormal, the corresponding thermostat should be replaced in time.