Kia Rio: Compressor Description

The compressor is the power unit of the A/C system.

It is located on the side of engine block and driven by a V-belt of engine.

The compressor changes the low pressure and low temperature refrigerant gas into the high pressure and high temperature refrigerant gas.

Variable Swash Plate Compressor

The compressor has a swash plate that rotates to reciprocate pistons, which compress refrigerant.

The variable swash plate compressor controls the swash plate angle to change the refrigerant displacement. It achieves precise cooling capability control in accordance with vehicle interior and driving conditions.

The internally controlled variable swash plate compressor changes the swash plate angle by a MCV (Mechanical Control Valve) in accordance with fluctuation of a suction pressure.

The externally controlled variable swash plate compressor changes the swash plate angle by an ECV (Electric Control Valve) in accordance with an electrical signal from the heater & A/C control unit.

This enables stable temperature control and improved driving feeling.

ECV control diagram

Refrigerant line Replacement

1. Discharge refrigerant from refrigeration system. 2. Replace faulty tube or hose.    ...

Compressor Components

1. Center Bolt 2. Hub Bolt 3. Hub Assembly 4. Snap Ring 5. Pulley 6. Compressor Assembly 7. Electric Control Valve (ECV) ...

See also:

5Door Side Body B
Side outer panel notch Side outer panel notch Side outer panel notch ...

Auto Defogging Sensor (FATC only) Replacement
1. Remove the auto defogging sensor cover (A). 2. Disconnect the connector (B) and then remove the auto defogging sensor (C). ...

Compression Pressure Inspection
   If there is lack of power, excessive oil consumption or poor fuel economy, measure the compression pressure. ...