If the car heater is not turned on correctly, the fuel consumption will double? When the engine reaches the ideal working environment of 95 degrees in two scenarios, the fuel consumption is completely different! The reason is easy to understand, that is, when the engine reaches the working temperature of 95 degrees at -30 degrees and keeps balance, it needs more fuel than when it reaches 95 degrees under external conditions.
Therefore, the fuel consumption of driving in winter will inevitably increase, even if there is antifreeze and the warm air is not turned on, the fuel consumption will also increase; Because the ambient temperature is low in winter, the engine needs more fuel to maintain the ideal heat balance! This is basically the working mode of the "heat exchange station" of the northern heating system. The high-temperature cooling water heats the air, then cools it and circulates it back to continue to absorb heat.
So the heat source of the engine is warm. Air is just the waste heat of the engine. As for compression, don't think about the engine. The compressor can only cool, not heat! The engine will further use fuel on the basis of good fuel consumption in winter, and recover the heat released by the coolant to warm the air.
So the so-called wrong heating is to start the engine in advance during the warm-up process when the engine has not reached the ideal temperature. Turning on the warm air will cause the hot air of the engine to be consumed, and the fuel consumption will increase to a certain extent. But usually the heating process only lasts for a period of time, so it is correct to turn on the warm air after reaching the ideal working temperature (95℃).
At this time, the engine does not need extra heat. I have seen many sayings that the cooling fan in the front of the car will also run. The radiator fan at the front of the car is not controlled by the engine computer or air conditioner. Don't misunderstand me. The engine computer judges whether it is necessary to turn on the cooling fan according to various factors such as vehicle speed, engine speed and water temperature.
It has nothing to do with whether the heating in the car is on or not. With the increase of speed, the heat in the engine compartment will be higher and higher. At this time, the circulation mode of the air conditioner will be set to the internal circulation mode, and the temperature inside the car will rise rapidly. When the car is warm, switch to the external circulation, which is beneficial to the air circulation in the car.
Many people worry that turning on the warm air will increase fuel consumption, so they will turn it off after a while. Now you can safely turn on the heater. But in summer, the compressor will be turned on. Otherwise, no matter how big the air conditioner is turned on, you will find that all the air blown out is hot air. Because to make cold air, we must rely on the power of the compressor.
So at this time, the increase in fuel consumption is inevitable, which is impossible. Warm air can be put in place in a few minutes, in order to quickly evaporate or blow away the ice or water vapor on the windshield of the car, so as not to affect our driving vision. At this time, the lubricating oil of the vehicle has reached the best lubrication effect, and the vehicle can run.
The correct treatment method is to use hot air, turn on the defogging mode to melt the snow on the windshield, and then use the wiper to sweep away the water. Scraping directly with the wiper will not only damage the wiper motor, but also scratch the windshield. Moreover, it is very difficult to scrape directly!
As for winter, I will wait until the water tank temperature reaches 85 degrees before turning on the air conditioner to send hot air. Air conditioning uses the heat of the engine to send hot air, and the water tank is directly involved in this process. It's useless to turn on the air conditioner to send hot air, and it's useless to drive the car air conditioner compressor, which won't heat up.
So the best way is to wait for the temperature of the water tank to rise before turning on the air conditioner. In some brands of cars, such as BMW, the automatic air conditioner is set to turn on the hot air of the air conditioner even before the engine reaches the optimal working temperature, and the air volume at the air outlet is very small. Because there is no hot air, the air volume is intelligently reduced, so your car has no extra fuel consumption.
Because the car is a systematic project, although the compressor is not used when the car is hot, other parts of the car are actually moving, which will also affect the wind resistance of the car, so it will increase fuel consumption. The fuel consumption per 100 kilometers is likely to increase by 0.5 liters compared with that without warm air, which has been proved by the industry.
When the car is cold, the compressor is the source of warm air, and the fuel consumption at this time is actually similar to that of turning on the air conditioner in summer.