Automotive air conditioning diagram

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

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.

Automotive air conditioning diagram

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. This vapour refrigerant is then circulated along with lubricant oil to the condenser. Strainer-drier assembly: This high pressure, low temperature liquid refrigerant then flows through the strainer-drier assembly also known as filter-drier assembly. Strainer traps the impurities, contaminants and foreign particles etc. Drier removes moisture i. Expansion valve: High pressure, low temperature liquid refrigerant flows through the thermostatic expansion valve, where its pressure is decreased due to its flow through a small variable or fice providing restriction. Thus, the refrigerant becomes low pressure, low temperature vapour refrigerant. Evaporator: Refrigerant is now low pressure, low temperature liquid refrigerant, which enters the evaporator coil.

View Forum Discussion. Even so, that fan is really a supplement to cruse airflow.

A car air conditioning system diagram typically includes several major components, including the compressor, condenser, evaporator, expansion valve, and various pipes and hoses that connect them. The process starts with the compressor, which pumps refrigerant gas usually Ra from the low-pressure side of the system into the high-pressure side. The gas then flows through the condenser, where it releases heat and turns into a high-pressure liquid. The liquid then moves through the expansion valve, which reduces its pressure and temperature, causing it to evaporate into a low-pressure gas. As the gas moves into the evaporator, it absorbs heat from the cabin and cools the air, which is then blown into the cabin by the blower motor. The warm air is then returned to the air conditioning system through the intake ducts and is filtered before it reaches the evaporator. The refrigerant gas then flows back to the compressor to start the process again.

The system looks complicated, but it's really quite simple. Once you know how it delivers cold air you will be better informed when problems occur and how to fix them, or understand more on what a garage is telling you when having it repaired. Your heater and air conditioner HVAC have three jobs, cool the interior of the car down, heat the interior up and defrost the windshield. All three modes work together as a climate control system. This system is controlled by a main computer which sits in the dash and also houses the controls for the mode and temperature settings. The computer gives commands to the compressor to start pressurizing the refrigerant along with the blend door actuators to direct air flow from the floor, mid and defrost vents. It also controls blower fan speed.

Automotive air conditioning diagram

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.

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Higher ambient temperature and higher humidity equal higher discharge temperature. Save my name, email, and website in this browser for the next time I comment. Your email address will not be published. Documentos de Profesional. As you will see, if they run without pumping the lubrication can become a problem. The big black pulley at the front also houses the clutch, you see an electrical lead with connector protruding. Then, the pressure switch contacts close, telling the PCM to recognize the clutch relay. Split air conditioner is the modified version of window air conditioner. Overall, the car air conditioning system works by removing heat from the cabin and releasing it outside, creating a cooler and more comfortable environment for passengers. Only way to hold the pulley was to put it in my vise and use a small socket to undo the little nut. In the receiver-dryer, the desiccants remove any water that has entered the system. Email Address: Please enter a valid email address for yourself.

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.

Published by. So, I would take a hose and spray water on thee condenser. What is Summer Air Conditioning System? Save my name, email, and website in this browser for the next time I comment. The condenser is basically a radiator, and it serves a similar purpose to the one in your vehicle, to draw heat out of the system. Always get your ac serviced with a car air conditioning specialist and stay clear of car repair workshops and cowboys. On the bottom you see another black connector mounted on top of the compressor housing. According to my mum I started taking things apart from when I was about 3 years old. The refrigerant is drawn into the compressor as a low-pressure gaseous form. Originally Posted by heatingelement. The system used for automobile air conditioning works on the same principles that other air conditioning being used. If the moisture is allowed to remain in the system this will react with the internal metal surfaces and mix with the system lubrication oil creating acids and sludge build-up causing premature failure of the air- conditioning system. The low pressure, low temperature vapour refrigerant is then pulled into the compressor through the evaporator. Either the inlet or output pipe.