Automotive air conditioning diagram

We have some excellent threads on the forum about airconditioning, notably car AC systems, obviously!

Refrigeration cycle used: Vapour compression cycle. The system used for automobile air conditioning works on the same principles that other air conditioning being used. The major problem associated with automobile air conditioning is running speed of compressor. While installing AC in the automobile, the compressor is mounted above the engine and it is driven by belt drive powered from front end of the engine. The condenser is mounted ahead of car radiator. The cooling coil and the blower are usually located under dashboard. Compressor: Low pressure, low temperature R — a vapour refrigerant entering the compressor is compressed to become high pressure, high temperature R — a vapour refrigerant.

Automotive air conditioning diagram

The cycling clutch orifice tube CCOT refrigerant system cycles a compressor 1 on and off in order to maintain the desired cooling. This cycling also prevents evaporator freeze-up. The temperature selector on the control assembly maintains comfort in the passenger compartment comfort. A switch that senses low side pressure as an indicator of the evaporator pressure controls the refrigeration cycle, or the on and off operation of the compressor. The cycling pressure switch is the freeze protection device in the system. The switch also senses refrigerant pressure on the suction side of the system. This switch is located on a standard service low-side fitting. When an air conditioning mode is selected, the compressor clutch coil receives electrical energy. As the compressor reduces the evaporator pressure to approximately kPa 25 psi , the pressure switch opens, de-energizing the compressor clutch. The system moves towards equalization and the pressure reaches approximately kPa 46 psi. Then, the pressure switch contacts close, telling the PCM to recognize the clutch relay. Higher ambient temperature and higher humidity equal higher discharge temperature. This is normal.

It rarely requires taking the compressor out of the car and thus no need to extract the refrigerant charge first.

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In the United States, the car air conditioner is a necessity for every car during the hot summer months. Many passengers do not know how their air conditioner works and take it for granted. This article will explain the basic principles of how automotive air conditioning works. By understanding how the ac works, you can appreciate the engineering that goes into making this life-saving device. Air conditioners made life easier and more comfortable for car occupants. In this powerful guide, you will learn comprehensively how car air conditioning units work, and the scientific principles which cool the refrigerant, and condensation, explained in easy words. The condensed refrigerant, when changes its state to vapor refrigerant, produce cooling by taking the heat from the surrounding.

Automotive air conditioning diagram

You probably don't think of your car's air conditioning system very often. But if it broke down, you'd definitely miss the cool air. So, how does AC work in a car? Automotive air conditioning has been with us longer than you might think.

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A switch that senses low side pressure as an indicator of the evaporator pressure controls the refrigeration cycle, or the on and off operation of the compressor. A big shop fan was a big help. The big black pulley at the front also houses the clutch, you see an electrical lead with connector protruding. These days I do manage a bit better. Rules For Equipment Owners. The temperature selector on the control assembly maintains comfort in the passenger compartment comfort. Documentos de Crecimiento personal. When the clutch engages, it locks up the rotating pulley against the compressor which is still standing still. View Forum Discussion. Copyright - www. As it moves out of the condenser, the liquid goes through a little reservoir installed in the line. Even so, that fan is really a supplement to cruse airflow.

For this reason, it is very important to keep the passenger cabin cool. A car cooling setup means a lot on hot days. So, this article is for you, both for AC technicians and for non-techie guys.

As it moves out of the condenser, the liquid goes through a little reservoir installed in the line. You will see that a variable compressor will run continuously, but the volume of refrigerant it pumps is controlled. Here you see the inside of the clutch pate. On my Jeep I replaced the bearing and on an earlier Jeep I had to replace the whole clutch too as it was worn out. I'm thinking mine has a leak. That is actually lubrication oil and dye! The liquid then moves through the expansion valve, which reduces its pressure and temperature, causing it to evaporate into a low-pressure gas. Compressors cannot compress liquids, only gasses. In one full loop, it changes the state of matter 3 times with a high-pressure side and a low-pressure side. The system cycles in order to maintain maximum cooling, without evaporator freeze-up. What is Winter Air Conditioning System? This is the functional diagram of the Ford Fiesta AC system. Car Air Conditioning. Compartir este documento Compartir o incrustar documentos Opciones para compartir Compartir en Facebook, abre una nueva ventana Facebook.