Automotive Air Conditioning

Automotive air conditioning fundamentals: Purposes of Heating, Ventilation and Air Conditioning- Environmental Concerns- Ozone layer depletion- Location of air conditioning components in a car. Schematic layout of a vehicle air conditioning system, refrigeration system. Psychometry – Basic terminology and Psychrometric mixtures- Psychrometric Chart- Related problems.

Automotive cooling and heating system: Fixed thermostatic and Orifice tube system- Variable displacement thermostatic and Orifice tube system- Vehicle air conditioning operation. Types of compressor- Compressor Clutches- Compressor Clutch electrical circuit- Compressor lubrication- Condensers- Evaporators- Expansion devices- Evaporator temperature and pressure controls-receiver-drier- Accumulators- refrigerant hoses, Connections and other assemblies- Heating system.

• Air-conditioning controls, delivery system and refrigerants: Types of Control devices- Preventing Compressor damage- Preventing damage to other systems. Maintaining drivability- Preventing Overheating Ram air ventilation- Air delivery Components- Control devices- Vacuum Controls Containers.
• Handling refrigerants – Discharging, Charging & Leak detection – Refrigeration system diagnosis– Diagnostic procedure – Ambient conditions affecting system pressures.

Automatic temperature control: Different types of sensors and actuators used in automatic temperature control- Fixed and variable displacement temperature control.Semi-Automatic- Controller design for Fixed and variable displacement type air conditioning system.

System servicing and testing: Special tools for servicing vehicle air conditioning – Diagnosing components and air conditioning systems.Diagnosing cooling system- Air delivery system- Automatic temperature Control system diagnosis and service.