DCP05096 4472604530 For BMW 3/5/X5/X6 AC Compressor Replacement WXBM038A

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Types of AC compressors for a car

There are various kinds of compressors in modern car air conditioning systems that are differing, for example, in power, performance, noise, etc. In general, we will consider some models of structures using the example of the DENSO compressor range.

• The most popular type of compressor is a swashplate. The drum of the unit, containing several pistons (from five to seven), is driven by the engine of the car. The pistons circulate the refrigerant sliding relative to the stationary wobble plate. The volume of the pumped-over coolant can be changed due to the variable angle of inclination of the disc. DENSO compressors of this type (SE, SB, SL) are equipped with many large vehicles for which high performance of the AC system is important.
• Compressors with wobble plate, DENSO CA. In this design, on the other hand, the swashplate is movable, and the pistons and drum do not rotate. The distribution system in these compressors is a little more complicated, and today they are gradually losing ground.
• Scroll compressors are completely different types of AC compressors for a car. Their mechanism consists of two spirals: movable and fixed. Compressors of the DENSO SC type are renowned for their extremely low noise levels. Scroll compressors take up very little power from the engine and are therefore excellent for air conditioning systems in cars with small light engines. Due to its low energy consumption, DENSO ES compressors with an electric drive are also equipped with a scroll mechanism. The advantage of these compressors is the ability to operate on the vehicle's battery, that is, with the engine off, which is important for hybrid vehicles.
• Finally, rotary vane compressors, DENSO TV. These compressors are designed for low power systems. Their principle of operation is familiar to many motorists from booster pumps it is an eccentric in a chamber of variable volume, equipped with movable blades. The simplicity of the design of these compressors ensures their reliability and ease of maintenance.

Test car air conditioning compressor

1. Start by visually inspecting the compressor for any signs of damage or leakage.

2. Measure the voltage at the compressor's electrical connector using a multimeter to ensure it is receiving power.

3. Check the clutch engagement by turning on the air conditioning and observing if the compressor clutch engages and spins freely.

4. Use a manifold gauge set to check the high and low side pressures. Compare the readings to the manufacturer's specifications to determine if the compressor is functioning properly.

5. If all other tests indicate a fault with the compressor, it may need to be removed and taken to a qualified professional for further testing and repair.