Does car air conditioner cost oil for cooling or heating? Do you really know?
The compressor of the car air conditioner is driven by the engine. Turning on the air conditioner is equivalent to increasing the engine load. Of course, it will consume more fuel. The fuel consumption of the car when the air conditioner is turned on is higher than when it is not turned on, and the fuel consumption is not increased when heating. However, when running at high speeds, opening windows for ventilation and cooling takes more fuel than closing windows and opening air conditioning. Because wind resistance increases. Refrigeration costs oil, heating does not consume oil. Only the cold air conditioner consumes fuel.
If AC is not turned on, the press will not rotate, and even if it hits the cold wind, there will be no cold air coming out. Heating is very simple, that is, using the heat of the engine's radiator. As long as the engine is working, there will be hot air. The fan consumes energy as long as it rotates, and the electricity on the car is returned to the root or replaced with oil. Refrigeration is no different from conventional air conditioners. The refrigeration mode is fuel-consuming because the compressor needs power when it runs. Heating mainly uses engine cooling water, which is heated by heating. The principle of engine heat dissipation without fuel consumption.
During the start-up phase of a cold engine, the water temperature of the engine is not heated to a reasonable working range (this can be observed on the vehicle's water temperature gauge, 80-95 degrees). In order to make the vehicle enter the best working state as soon as possible, the fuel system will increase fuel injection. Increase idle speed, speed up engine operation and increase water temperature to a reasonable range. At this time, if the heating system is turned on and the water temperature is not enough to achieve the effect of air conditioning warm air, the on-board system will increase the fuel injection volume and increase the idle speed to assist the engine to heat up. Therefore, if the hot air is turned on during the cold phase or the vehicle is driven at a low speed for a long time after starting, in fact It is a more fuel-consuming approach. But when the vehicle enters a high-speed phase or the water temperature rises to the optimum quickly, the vehicle will no longer consume excessive fuel. On the contrary, refrigeration is driven by the compressor to drive the refrigerant cycle. The compressor is driven by the engine through the belt, which consumes engine energy and consumes oil.
Why do traditional gasoline passenger cars use more fuel for cooling than heating?
When the AC cooling button of the air conditioner is activated, the compressor starts to work to bring the heat in the passenger compartment to the condenser in the front compartment of the vehicle. The cooling fan in the front compartment generally also starts to work, dissipating the heat of the condenser to the front compartment Inside the air. The power consumption of the compressor is generally above 2kW, and this power needs to be provided by the engine. Generally, the effective power of the engine is less than 15kW in urban conditions, and the power of the compressor accounts for more than 10% of the engine oil consumption. There is no statistical cooling fan. The percentage of power.
Heating is generally carried out by dissipating the heat taken by the engine coolant through the warm air radiator to the passenger compartment. The heat taken by the coolant is generally required to be dissipated in order to stabilize the normal operation of the engine, which means that heating is used The by-products produced by the engine work (the heat that needs to be dissipated) basically do not increase the work load of the engine, and the effect on fuel consumption is not very obvious.
