How to turn on the air conditioner to save fuel
The hot summer is here! Now you have to turn on the air conditioner as soon as you get in the car, but if the air conditioner is turned on too much, it will inevitably cost more fuel, especially now that 92# gasoline has entered the "8 yuan + era", and many car owners feel distressed for their wallets while blowing the air conditioner. So, why do car air conditioners consume fuel? How much oil does it consume? How to turn on the air conditioner to save more fuel? Let's find out together.ZHONGCHENG
How to turn on the air conditioner to save fuel
01. Why do car air conditioners consume fuel?
In daily life, when we turn on the AC button of the air conditioner, the air conditioner compressor needs to do cooling work, and the air conditioner compressor of the car is directly driven by the engine, which consumes a part of the power of the engine, so it will consume fuel.
The key to how much fuel an air conditioner consumes depends on what type of compressor the car uses.
If it is a compressor with a non-variable displacement, there is no need to deliberately adjust the temperature and wind speed, because a car with a fixed displacement air conditioner pump, as long as the air conditioner is turned on, the fuel consumption is almost rated, regardless of the temperature and air volume. Conversely, with variable-volume compressors, fuel consumption is related to temperature.
If you don't know what kind of compressor your car is, you can check it in the car manual.
02. How much oil does the car air conditioner consume?
So how much fuel does the air conditioner consume when the car travels 100 kilometers? Let's do the math.
Contrary to what most people think, the power of the air conditioner in the car is much larger than that of the air conditioner in the home. The power of general household hanging air conditioners is generally about 1.5 horses, while the car air conditioners are at least 4 horses. To say the reason, one is that the car itself is poorly sealed, which is equivalent to an iron shell exposed to the sun, and the natural temperature loss is large. Second, the installation space for the car air conditioner itself is very limited. Compared with the huge external unit plus the internal unit of the home air conditioner, the car air conditioner is much smaller. Being small has to do more difficult work, and it is natural to consume more. For most household cars, the displacement is generally between 1.3-2.5L, and the fuel consumption is generally 6-10L/100km. After turning on the air conditioner, the fuel consumption will generally increase by 10-15% of the crude oil consumption. Therefore, Fuel consumption will increase by 0.6L-1.5L per 100 kilometers. If it is calculated at 8 yuan per liter of 92 gasoline, it will cost 4.8 yuan to 12 yuan more per 100 kilometers.
Of course, this is only a rough estimate, and the specific figures still need to be combined with specific models.
How to estimate air conditioner fuel consumption?
When the water temperature of the car reaches the working temperature (usually 90°C), let the engine idle, put it in neutral and turn off all electrical equipment, and record the instantaneous fuel consumption at this time, for example, the value is 0.9l/h.
Then turn on the air conditioner for cooling, and then observe the instantaneous fuel consumption. For example, if it becomes 1.2l/h, it means that your air conditioner fuel consumption at this time is 0.3l/h (1.2l-0.9l=0.3l), which means that every hour you The air conditioner burned 0.3l of gasoline.
Of course, this value will change due to different ambient temperatures and the temperature you set. The greater the temperature difference between the inside and outside of the car, the greater the fuel consumption.
03. How to use the air conditioner to save more fuel?
Turning on the air conditioner does consume more oil, but we have to use the air conditioner. In this case, let's take a look at how to use the air conditioner to save fuel.
1. After starting the car in summer, don't turn on the air conditioner immediately, you should open the window first, and then turn on the air conditioner after the heat in the car has dissipated.
2. Try not to adjust the air conditioner to the highest level. Excessive temperature difference between the inside and outside of the car will not only increase the fuel consumption of the car, but also easily cause the owner to catch a cold and have a fever.
3. Turn the air outlet of the air conditioner upward, the weight of the cold air in the air will cause it to sink, and the air outlet facing upwards has the best effect of letting the cold air fall from the top.
When many car owners see the increase in fuel consumption, they think that the car air conditioner is running too much. In fact, the problem of increased fuel consumption is more complicated.
The increase in fuel consumption may be due to carbon deposits in the engine, or abnormal tire pressure, and differences in driving techniques will also have a certain impact on fuel consumption.
Finally, the hot summer is hard, no matter how much fuel consumption, how to turn on the air conditioner, in addition, it is recommended that the car air conditioning system should be cleaned every six months to a year, which can effectively purify the odor and purify the air from the source.
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