The water temperature of my car is normal without air conditioning. The water temperature will drop when the air conditioner is turned on, but it will not drop without air conditioning. Is there any way to get it back to normal?

Heating is the water of the engine, which is supplied to the air conditioner through the water pump. Under normal circumstances, unless the engine water is low, fuel consumption will not increase. At this time, when you turn on the air conditioner for heating, the engine will inject more fuel, so that the water temperature will come up as soon as possible and reach the heating temperature. It is generally unnecessary to turn on the air conditioner for heating in winter. The air conditioner is a compressor switch, so it is recommended to turn off the air conditioner to reduce fuel consumption.

In winter, a car has a large amount of heat exchange. If the air conditioner is turned on, it will increase the heat exchange capacity in the car, resulting in poor heating effect of the air conditioner, lower engine water temperature, increased fuel consumption, more and more weather, and faster water temperature drop.

It is suggested to turn off the air conditioner, blow the air conditioner to defrost, start the internal circulation and start the external circulation when the front window is foggy. This heating effect is good, and the water temperature will not drop.

Extended data:

It is normal for the water temperature to drop when the warm wind is turned on in winter.

Because the heat of hot air is obtained from the coolant. This is not the same as refrigeration. Cold air is obtained by a compressor. The engine must be assisted by a good cooling system when working. The temperature of the combustion chamber in the cylinder is as high as several thousand degrees. If the heat is not released in time, the engine will explode soon.

There are two ways of engine heat dissipation: air cooling and liquid cooling.

Air-cooling means that the engine block has fins to dissipate heat. Liquid cooling is the most commonly used cooling method for automobiles at present. Waterways are reserved at high temperature positions such as engine cylinder liner and cylinder head, and coolant flows in the waterways. The cylinder head and the like are like a boiler, constantly heating the coolant in the interlayer to complete the heat dissipation.

In this way, the temperature of the cylinder is taken away by the cooling liquid in the water channel, and the cooling liquid is sent to the radiator (front water tank) under the action of the water pump to dissipate heat, and the temperature of the cooling liquid flowing through the radiator is reduced, so that the engine can continue to participate in the cycle, and the engine can always maintain the normal working temperature.

Baidu encyclopedia? -Car air conditioning (car equipment)