Only warm air is turned on in winter, and the fuel consumption is very small. However, if the A/C button is pressed when the warm air is turned on, the fuel consumption will increase.

The power consumption of the blower can be ignored, but in fact it is basically ignored.

First, the principle of warm air is to let the engine coolant flow into the heat exchanger, and then the heated air is blown into the compartment by the blower.

What is the dialect? Heating is the so-called "waste utilization", that is, blowing the heat of the engine itself outside, it is better to blow it into the carriage.

But the blower itself consumes electricity, which means it costs oil, which is why some friends say it costs oil to turn on the warm air.

There is also a paper "The Relationship between Vehicle Electrical Equipment and Vehicle Fuel Consumption" in Automobile Times magazine, in which it is written that after the vehicle is started and running normally, the vehicle electrical equipment basically relies on generators to provide power.

When the generator power increases, it has little effect on the output power of the engine itself, which is reflected in the fact that the fuel consumption has hardly changed.

What does this look like? For example, the chef cooks a lot of dishes every day, and sometimes a table of guests temporarily says, "I want scrambled eggs with tomatoes!" " "That actually doesn't have much impact on the work intensity.

In addition, there is a scientific and technological prospect, the detection and fault analysis of engine water temperature sensor.

When the coolant temperature is lower than the theoretical value, ECU will increase fuel injection to maintain the normal operation of the engine.

As the heat of the warm air comes from the coolant, for friends in the cold areas in the north, in order to keep the working temperature of the engine, turning on the warm air will really increase the fuel consumption, which can be felt.

If it is cold, it will be hot again; It is a fact that it is hot and cold.

If you turn on the air conditioner heater, it will consume oil. However, if the air conditioner is pressed when the heater is turned on, the fuel consumption will increase even more.

We talked about it in the video before. If the heating is on, we need to turn on the air conditioner again. The air-conditioning compressor is actually running, and the warm air blown out is the result of a mixture of cold air and warm air.

What is this? Why? Turning on cold air and warm air can remove fog, which has such an effect.

However, when the warm air is turned on and the air conditioner is turned on again, the fuel consumption will increase. Because the compressor is running, the compressor will consume energy, similar to turning on the cold air conditioner in summer.

So it is also a way to turn on the air conditioner when there is fog and turn off the air conditioner when there is no fog.

There is a paper in Automotive Technology magazine, which mentioned the experimental study on the influence of air conditioning on fuel consumption of light passenger cars.

The refrigeration power of automobile air conditioner accounts for about 10% to 15% of the engine output power. Air conditioning has a significant impact on vehicle fuel consumption, with an increase of about 15% to 26%.

Equivalent to: original fuel consumption per 100 kilometers 10L. Once the air conditioner "PIA" is turned on and warm air blows there, the extra fuel consumption will increase by about 1.5 liters to 2.6 liters.

Of course, even if the A/C light is on, the compressor is not always working, depending on the model. This car is smarter and consumes less fuel. Always press it to the end, and the fuel consumption is higher.

There is a paper in Automotive Electrical Appliances magazine, which mentioned the research on the control strategy of automotive automatic air conditioning.

When the air conditioning indicator light is on and the evaporator temperature is lower than 1.5℃, the HVAC control module will automatically turn off the compressor to prevent frosting.

Some are 1.5℃, and some may need to be adjusted in more stages, depending on the model.

How much electricity does an electric car need to turn on the warm air? What about electric cars? Right? Turning on the air conditioner in winter is equivalent to wasting electricity.

In fact, there are two forms of heating and air conditioning for electric vehicles: one is called PTC and the other is called heat pump.

Ordinary PTC heating, that is, using thermistor as heat source, is simply understood as: the heated things in the hair dryer consume a lot of electricity.

There is a paper in the magazine Automotive Practical Technology, which mentioned the low-temperature experimental study of the combined heating system of electric vehicles.

Using PTC electric heating, the effect will not be affected by the ambient temperature, but the energy consumption is relatively high, which will reduce the battery cruising range by 18% to 30%.

Electric vehicles with heat pump air conditioning will save electricity relatively.

"Automotive Engineering" magazine also has a paper, the research on heat pump air conditioning technology of electric vehicles.

Heat pump air conditioning can convert less energy consumption into greater heating capacity and lower power consumption. Compared with PTC, it can reduce energy consumption by about 4 1%.

That is to say, when the heat pump air conditioner is used to turn on the warm air, the cruising range will be reduced by 10.6% to 17.7%, which is similar to that of a fuel vehicle; If PTC is used, the fever will be a bit severe, and the "zua" will disappear as soon as it is electrified.

The fuel car only turns on the warm air, which increases the fuel consumption very little, so generally speaking, the fuel car only turns on the warm air, which increases the fuel consumption very little, almost negligible.

However, if air conditioning is turned on there, warm air and demisting are needed, and the increased fuel consumption is similar to that of air conditioning in summer.

For electric vehicles, the power attenuation in winter itself is more serious, and it takes a lot of electricity to turn on the air conditioner. Everyone thinks PTC heating is often uncomfortable, and it will be much better to use heat pump.