Do cars without air conditioning have the same fuel consumption as cars with air conditioning? Why?

The main influence is the displacement of air-conditioning compressor body and whether the compressor is variable frequency or fixed frequency. Regarding the displacement of air-conditioning compressor, it is certain that the greater the displacement, the more energy consumed and the greater the impact on fuel consumption. The displacement of the air-conditioning compressor of the owner's car can be obtained from the nameplate of the compressor body, and it can also be roughly judged by simply comparing the volume of the compressor. Many car owners like to turn on the air conditioner as soon as they get into the car and set the cycle mode to the internal cycle state, which is wrong.

We know that the fuel consumption of cars will increase correspondingly when air conditioners are used, but how much can be increased is still vague for most drivers. According to professionals, automobile air conditioning accounts for about 20% of engine power, so turning on air conditioning will consume part of engine power and fuel consumption will increase. The specific increase in fuel consumption is related to vehicle displacement and speed. In this way, there are two possibilities, one is heating, and the car driven by the internal combustion engine uses the working waste heat of the internal combustion engine to raise the temperature inside the car without increasing the fuel consumption of the engine.

It affects fuel consumption because the power of the engine is consumed after the air conditioner is turned on, and the power consumed by the air conditioner compressor can be said to be the largest among all engine accessories, such as water pump, oil pump, generator and so on. In fact, the working principle and structure of automobile air conditioner and household air conditioner are basically the same. The power of the internal combustion engine automobile air conditioning system is taken from the engine accessory power and driven by the accessory belt! Therefore, the switching frequency and duration of automobile air conditioning ac are mainly related to the set temperature. The lower the temperature, the longer the starting time of the air conditioner, the higher the temperature setting and the shorter the running time of the air conditioner.

Air conditioning can be divided into cooling and heating. Heating uses the waste heat generated by the internal combustion engine to raise the temperature. Refrigeration is the engine-driven cabin refrigeration compressor, and the whole refrigeration system is used to cool down. The more power consumption, the higher the natural oil consumption.