The temperature difference between morning and evening in winter is different. When the temperature is colder in the evening, it is inevitable that you need to turn on the car air conditioner to warm up. Has anyone ever asked whether turning on car air conditioners will not waste oil? Some people said no, because the air conditioning and refrigeration compressors do not work, and the energy consumed by the electric fans is mainly consumed. This energy can be ignored. However, some people said that the Sun master who had specially consulted Xiaobian on this issue asked him to explain it to us.
In fact, what he said was basically correct, but it was not entirely correct. why? I will explain the relationship between warm air and fuel consumption.
The normal operation of the engine, there is a certain requirement for the water temperature, the general engine work, the water temperature is about 80 °C to 95 °C, if you do not reach this temperature, the engine EFI system will increase the amount of fuel injection, idle speed will be relatively high. The heat of the fan heater is derived from the water temperature. If the water temperature is not enough, turning on the warm air or turning on the warm air under a low-speed driving condition for a long time will cause the water temperature to drop or the temperature will not be high enough, causing the idle speed to increase to speed up the rise of the water temperature. High idle speed will increase fuel consumption. However, when the water temperature reaches the specified temperature and continues to operate at high speed, the heating heat blown by the heater will not affect the normal operation of the engine.
Therefore, not all air heaters do not consume fuel. Turning warm air when driving at a low speed in the urban area or just starting a vehicle will result in increased fuel consumption. Under high-speed driving conditions, there will be no impact on fuel consumption.
In addition, Xiao Bian tips: When the air conditioning heating function is turned on, under normal circumstances we are using the outer cycle, that is, from outside the car intake, to the car with fresh air, but encountered outside the air is not good or require a short time Internal circulation is used to achieve the desired temperature in the vehicle, that is, when the temperature inside the vehicle is very different from the outside temperature, the internal circulation can be used in a short time, and the temperature in the vehicle can be quickly adjusted by using the air conditioner.
The inner loop can improve the air conditioning effect, which is equivalent to reprocessing the indoor air, and the air conditioning effect is certainly better. However, prolonged use of the internal cycle will reduce the air quality in the car and may make people feel dizzy. A few minutes should be used to recirculate within a few minutes to allow fresh air to enter the car and improve air quality. If the internal and external circulation switch of the air conditioner is a mechanical lever instead of a button, the lever can be placed in the middle of the internal and external circulation to allow an appropriate amount of outdoor air to enter, which can improve the air quality and improve the air conditioning effect. In addition, when using air-conditioning defrosting and defogging, the use of an external circulation is effective.
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