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Over the years of driving, almost every owner deals with air conditioners on a daily basis, especially at a time when temperatures are increasing and the first thing to do is to open them. But the vast majority of people are misled by a base key, the ac key above the middle console. Many people think of the ac key as an exclusive cooling switch, and when they hit the ac, turn up the wind, and wait for the cold wind to come out, it turns out that air conditioning is particularly slow, fuel consumption is rising significantly, and even some of the car owners have experienced problems with air conditioning, which is cold and hot, and frequent fog in their windows。
According to data from a joint study of multiple motor platforms, more than 90 per cent of drivers in the daily car population misread the real ac key function, operating in a way that not only lowers air conditioning usage experience, but also increases vehicle energy consumption and burdens on air conditioning systems over the long term. Today, in the most straightforward words, the effect of the ac keys, the use of error zones, different seasons and the correct operation of road conditions are explained once and for all, with the actual use of the car scene, so that they can be used directly, both to save fuel and to make air conditioners cool, while protecting vehicle parts. This article was launched by today's headlines, all of the originals, and the content is real and not exaggerated。
First of all, let's correct the core cognitive deviation: ac keys are not just cooling keys. Many people saw the ac letters and agreed that it was the switch to control the cold wind, which was the biggest error on the road. Ac is an abbreviation of air conditioning in english, which is a direct translation of air conditioning and is implemented in the car air conditioning system, and its only function is to control the start-up and closing of air-conditioning compressors. Simplely understood, compressors are the core power components of car air conditioning, which is equivalent to the core mainframe of home refrigerators, home air conditioning, and the ac key is the power switch for this host。
The car air-conditioning system is divided into elements such as windmills, windways, temperature control modules, compressors, refrigerant pipelines and so on, with a clear division of parts. The wind lighter is responsible for the wind, which is controlled by the wind lighter regardless of the cold and hot wind; the temperature is regulated by the cold and warm wind door; and the compressor is responsible for only two things, the first driving the refrigerant cycle to cool and the second reducing air humidity to complete dewetting. In other words, the ac key only determines that the compressor does not work and is not directly related to wind failure, wind size and base temperature。
We can make a simple distinction that can be easily understood. When the ac key indicator light comes on, it is activated on behalf of the compressor, when the air in the vehicle is processed through a cryogenic evaporation box that absorbs the heat to blow out the cold wind, while the aqueous vapour in the air is removed from the wetting effect; when the ac key indicator light goes out, the compressor ceases to work, regardless of the temperature you bring to the lowest temperature, and the wind is blown only by the natural wind that passes through the wind channel and has no chilling effect at all. This explains a common phenomenon: the summer is just a fan, not an ac, and the wind is hot and boring, and the temperature outside the car is very different。
We understand the nature of the ac key, and then we're going to comb through the most common bugs in the car, which are also the main reason for the slow cooling of air conditioners and the soaring fuel consumption。
The first hf error: when the vehicle is tanned, the ac key is pressed directly in the car and the window is closed. In the summer, vehicles are parked in open areas, with several hours of direct solar activity allowing the temperature of enclosed space to rise rapidly, and realistic data show that at outdoor temperatures of 35°c or more, the temperature in the vehicle can reach 55°c to 60°c and higher on the dashboard, seat and interior surface for two hours. Many of the car owners drove the door, a heat wave came up, closed the window, opened the maximum wind volume, lit the ac keys, and waited for a rapid cooling of the temperature, and the car remained stifling for 10 minutes, and the air conditioner became cold half a day。
Why does this work so badly? In high-temperature environments, large amounts of hot air and high-temperature interior fittings are being distributed continuously, at which point the compressor is activated directly, amounting to overloading the air conditioning system. Compressors begin against the high temperatures of the vehicle as a whole, with a significant reduction in cooling efficiency and a natural slowdown. At the same time, engines require additional output power-driven compressors with high loads, with a marked increase in fuel consumption. This is also an important reason why many of the car owners reflect “a sharp increase in vehicle fuel consumption as soon as air conditioners are driven in the summer”。
Second hf error: no scenes in four seasons a year, air conditioners often open ac keys. A number of drivers have a fixed habit of pressing ac keys, whether in summer, spring or autumn or winter, as long as they turn on the air conditioner. In the spring and autumn, outdoor temperatures are comfortable, often requiring only air-refreight, no cooling, full-time ac keys, continuous emptying of compressors, increased fuel consumption and vehicle loads; by winter, you need to use warm winds and keep the ac keys open, which is the least cost-effective operation。
The working methods of the car warm wind are completely different from those of refrigeration, which uses the excess heat generated by engine operation and does not require the participation of compressors. In winter, the compressor in normal condition is dormant, does not add to the engine load and does not generally increase the fuel consumption. However, if the ac key is on, the compressor will be forced to start, using the remaining heat of the engine to heat the heat, while the compressor will act as a cooler, and the two systems will offset each other, not only by slowing down the heat of the heat, but also by increasing fuel consumption in the atmosphere, which will accelerate the ageing of the compressor in the long run。
The third hf error: when the ac cooling is activated, only the inner cycle is used throughout the journey and the outer cycle is never switched to. The role of inner circulation is to isolate the air from the outside of the vehicle, to allow the internal air to circulate and to cool it faster, which is true, but the long single-use internal circulation poses a range of problems. In closed spaces, people in the vehicle will constantly consume oxygen and excrete carbon dioxide, cycle continuously in use for more than 20 minutes, and the oxygen content in the vehicle will gradually decrease, people will be vulnerable to depression, dizziness and low concentration, and there will be significant safety risks in driving. At the same time, the air in the vehicle is increasing in humidity and the interior wall of the vehicle is easily condensed with water, generating fog and blocking the driver's sight。
The fourth hf error: rainy days, fog weather, which does not know that the ac key is used to remove the fog, only blindly defusing the fog function. Rainy weather is characterized by heavy humidity, temperature differentials inside and outside the vehicle, a high degree of fog in front windshields and side windows, and many new drivers only wipe glass over and over again, or simply block fog patterns before opening, resulting in a reversal of the fog, which is quickly removed. In fact, the core of defusing fog is dehumidification, while the ac key combination of defunct functions can solve the problem of fog at the root, and many have neglected the dehumidification of the ac key, treating it only as a cooling key and wasting its utility in vain。
Fifth hf error: no ac key will be closed early until the stop has been shut down and the vehicle will be activated next time directly with ac. These are details that many old drivers can easily ignore, as well as invisible habits that damage air-conditioning compressors and affect the life of vehicle batteries. If the ac key is kept on while parking, the next ignition starter will start at the same time as the engine, compressor load, and the starter load will increase at the same time. In the long run, motors and cylinders are used to accelerate wear and tear, and this damage is more pronounced in winter conditions at low temperatures。
The above five error areas largely cover the day-to-day operations of the vast majority of the owners. This is followed by a step-by-step presentation of standard operating procedures, taking into account different seasons, different road conditions and different use scenarios. Each step has been measured to ensure rapid cooling, low fuel consumption and safety of vehicles, and new and old drivers can adjust their vehicle usage habits。
This is also the most frequent season for ac keys, with four scenarios: sunbath, normal driving, short-distance travel and long-distance travel。
First: the standard operation is four steps after the open sun. The first step was to pull the door and open all the windows, including the skylights, without rushing to sit in the car for 30 seconds to one minute, and to use the air convection to quickly remove the high temperature and heat accumulated in the car. This step does not require the opening of any air conditioning, and natural ventilation allows for the removal of most of the heat at the lowest cost and the most significant effect. The second step, closing the doors, temporarily retaining windows, opening the air-conditioning windmill, moving to a medium-high wind volume, without pressing the ac key, is when only the natural wind cycle continues to blow the amount of heat left in the car and the interior of the car, which is distributed for about a minute. Step three, close all the windows and light the ac keys to turn on the compressor while switching to inner circulation mode. After the first two steps of ventilated heat, the base temperature in the vehicle has been reduced significantly, and when the compressor is activated, it will be able to blow out the cold quickly, the cooling efficiency will be doubled, the temperature will be reduced by three to five minutes faster than the direct ac, and the compressor load will be reduced and the fuel consumption reduced. The fourth step is to regulate temperature and wind, which is proposed to be set at 22°c to 24°c, the most comfortable temperature for humans and the most energy-efficient workspace for air-conditioning systems, with fine-tuning of the amount based on the number and body temperature of the vehicle。
One more detail is that a lot of people prefer to keep air-conditioning temperatures to a minimum, and think that the colder the better, the less necessary. The lower the air-conditioning temperature, the more intensive the compressor works, the higher the fuel consumption, and the lower the temperature, which can easily lead to cooling of the personnel in the vehicle, especially when the wind blows straight through the joint, which affects their health in the long run。
The normal road runs during the summer, and after the air conditioner has been open for some time, it is important to bear in mind that there is no fixed cycle throughout the journey. According to measured data, after 15 to 20 minutes of continuous internal circulation, it must be replaced by an external cycle lasting one to two minutes, introducing fresh air outside the vehicle and refilling oxygen inside the vehicle. The internal cycle continues to be cooled when the air-respiration is complete. This internal and external cycle is used interchangeably to ensure coolness in the vehicle while avoiding a lack of oxygen for personnel and to balance comfort and safety。
In the case of urban short-distance vehicles, a single journey of no more than 20 minutes will take place, with the main end-cycle of the journey, with no apparent oxygen deficiency, faster internal-cycle cooling and isolation from road dust and tail gas. In case of traffic jams, queues, passing through the red and green light section, the inner cycle is opened regardless of heat. Traffic block vehicles are dense, with very high tail gas and dust concentrations, and the outer cycle can cause all harmful gases to be inhaled into the vehicle, affecting the health of the body and effectively shielding the air from the outside world。
During the summer, long-distance high-speed driving, driving for more than two hours in a row, it is proposed to increase the frequency of off-cycle switching. High-speed traffic speeds, air circulation outside the vehicle is good and air quality is generally better than in the urban areas, switching out of circulation every 30 minutes for two to three minutes. In addition, while travelling at high speed, windows should never be opened, high-speed wind resistance would significantly increase the consumption of the whole vehicle, and the consumption of open windows would be much higher than that of normal air conditioners, which is also an area of cognitive error for many owners。
Turning next to the two seasons of the spring and autumn, the temperature of the season is moderate and does not need to be cooled for most of the time. In spring and autumn, the temperature varies widely, and in part the car is hot. All you have to do is turn on the windmill, switch it to the outer cycle, open the window and go for ventilation, and close the ac keys all the way. In the event of a rainy or southern day, a wet air, an inner seat, and a glass that is easily retorted, the ac keys can be activated for a short period, using the compressor's dehumidification function to remove the internal humidity, which is much dryer, and the ac keys will be closed as soon as they are eliminated, avoiding unnecessary energy consumption。
Next is the winter car scene, the winter core is warm and the ac keys remain closed for most of the time. Winter load operation: do not turn on the warm wind immediately after start-up. The engine that has just been activated is low-temperature, the heating system relies on the remaining heat of the engine, and when the water is not hot enough, it is cold and neither comfort nor electricity is wasted. The in situ glitch speeds between one and two minutes, moving slowly for two or three minutes, and until the octopus temperature pointer starts to rise, then the drums turn on the warm wind. Close the ac keys, turn the temperature up, give priority to the outer cycle in the cycle mode, and switch the internal cycle to keep warm。
The focus here is on the solution of the fog in the winter window, which is also the core use of the ac key to hide the function. The low temperatures outside the vehicle during the winter, the high temperature inside the vehicle, the high amount of water vapour generated by the human breathing, and the extreme mist on the inside side of the front windshield. Correct defunct step: first step, open the windshield before the vehicle, defunct slot; second step, light the ac key, activate the compressor except wet; third step, switch to outer cycle, with appropriate heating temperature. Once the complete operation is completed, the fog in the window will be completely dispersed in dozens of seconds and it will not recur. The principle is simple, and the key to defusing the fog is to reduce air moisture, and when the ac key is activated, the air passes through the cryogenic evaporation box, the water vapour is quickly distilled, and the warm wind drys the glass, which solves the fog problem from its source. Many people find it cold in winter and use it with a warm wind, which only reduces humidity and does not affect the temperature of the warm wind。
There is also a special scenario in which a car travels during the rainy season, regardless of spring, summer, autumn and winter, with heavy humidity in the rain and fog in the windows. The generic mist programme and the winter consistency of the defouling mist + opening the ac+ loop are currently the fastest and most effective defunct combination. In the case of heavy rain weather, rain is constantly poking glass outside the vehicle and, when the fog is completed, it is possible to switch the inner cycle for short periods and reduce the humidity of the vehicle into the vehicle。
Finally, the details of air conditioning operations before and after the stop-out, which protects compressors and cylinders, are simple but critical. In any season, the ac keys will be closed two to three minutes before the stop is ready to go out of fire, so that the wind breaker continues. The compressor ceased to work at this time, and the windmaker continued to blow the remaining water vapour on the surface of the air conditioner evaporation tank. On the one hand, it is possible to avoid fungus in a damp environment, to produce odor, to extend the useful life of air-conditioning cores and evaporation tanks; on the other hand, the ac keys are closed at the time of the next start-up of the vehicle, and the engine is set on fire with only a base load, without boosting the compressor, reducing the pressure on the start-up system, protecting the cylinders and starting the motor. Turn off the engine after the fire has shut down, the process is simple and long-term insistence reduces the probability of air conditioning failure。
In addition to the ac key and cycle mode, add a few practical and small techniques used in combination with air conditioning to further enhance the use experience and reduce fuel consumption. First, air-conditioning vents are well-directed, cold air density is high and naturally sink. During summer cooling, the vents blow as far up as possible, the cold winds cover the whole vehicle from top to bottom and cooler the temperature more evenly; the hot air density is low, floats up, the winter wind vents are blowing down, the heat is rising fast and the whole vehicle is warming faster. Second, the regular replacement of air-conditioning filter cores, which can lead to less winding and less efficient air-conditioning, while at the same time breeding bacteria, is recommended to replace the cores once per 10,000 km or six months, and to reduce the replacement cycle by vehicles that often travel in congestion and dusty sections. Thirdly, the cold wind should not be allowed to blow its head and joints for long periods of time, and a straight blow to the head during a car would be prone to dizziness, a straight blow to the neck, knee, and a long-term down would be prone to discomfort, or the direction of the wind would be appropriately adjusted or the wind would be activated。
Combining the data with actual data, we'll sort out the problems associated with fuel consumption and allay your concerns. Normal domestic fuel vehicles, ac keys on, compressors working, increase the consumption of 100 kilometres by 0. 5 to 1 litre, urban congestion by 25 to 30 per cent owing to frequent engine start-ups and repeated operation of compressors, and the operation of compressors at high speeds is stable and relatively small. If the window is chosen to ventilate, the speed of the vehicle is 80 km or more, and the fuel consumption associated with the wind resistance increases, far exceeding the consumption of the air conditioner. It is therefore summarized as follows: low-speed congestion in urban areas, rational use of air conditioning, rotational internal and external circulation, which is more fuel-efficient than opening windows; and high-speed travel, with air conditioning going through the entire course, which is much more economical than opening windows。
Many of the car owners struggled with the question of whether or not to drive the ac regularly, to make a further summary of all the scenes in order to facilitate rapid memory: the summer cooling, which must be accompanied by first ventilation, subsequent internal circulation and regular off-time circulation; the spring and autumn ventilation, which closes the ac in short wet weather; the winter wind, which normally runs off the ac, and the fog of the window must be removed from the ac fog; the rainy day, which opens the ac when the fog starts, and when the fog breaks down, it closes as required; and the early closing of the ac before the fire。
In fact, every function on a car has its own logic of use at the beginning of the design, and it's not necessarily true that we've developed habits over the years. The ac key appears to be a small button associated with fuel consumption, comfort, vehicle safety and vehicle maintenance. The correction of a small operational error zone, accumulated over a period of time, will save considerable fuel costs and reduce vehicle failure and enhance the experience of each trip。
Today you share the idea of the ac key, the error zone and the way the whole scene works, all of which are practical dry goods that can be used to drive. It is believed that after this, the use of car air conditioners will not cause any further problems of slow coolness, oil and frequent fog in the windows。
So let's talk about this: have you been driving so long that you used the ac key as a simple cooler? Do you usually drive in the summer, get in the car and drive the air conditioning, or do you open the window first? You're welcome to leave your views in the comment area and to share your small vehicle skills. The content was found useful, with a sense of appreciation, attention and subsequent continuous sharing of ground-based vehicle practical knowledge。
Disclaimer: this document is intended for daily vehicle experience-sharing only, with slight variations in vehicle-type air-conditioning functions, which should be based on vehicle usage instructions and should not be used to operate vehicle equipment。
