AM4021 Vehicle Air Conditioning Systems Syllabus:
AM4021 Vehicle Air Conditioning Systems Syllabus – Anna University PG Syllabus Regulation 2021
OBJECTIVES
To impart the knowledge on automotive air-conditioning and its components functions
To understand the Psychometric concepts, refrigerant characteristics,
To understand the range of techniques that can be used in diagnosing
To identify faults which affect automotive air-conditioning system performance
To provide adequate knowledge in safe working practice. understanding the correct procedures for A/C service and repair
UNIT I FUNDAMENTALS
Terminology, design factors and concepts related to air conditioning system – Construction and Working principles of Thermostatic Expansion valve and Orifice tube based system Heating system types -detailed study of HVAC components like compressor, evaporator, condenser, TXV, orifice tube, Receiver-drier, heater core etc. Location of air conditioning components in a vehicle.
UNIT II REFRIGERANTS & AIR MANAGEMENT SYSTEMS
Refrigerants: Temperature and pressure relation, Properties of R-12 and R134a- refrigerant oil. Simple problems -Containers – Handling refrigerants – Tapping into the refrigerant container – Ozone Layer Depletion. Air management system: Air routing for manual, semi and automatic system- cases and ducts- Air distribution, control head and doors- Defrost system
UNIT III AUTOMATIC CLIMATE CONTROL SYSTEM
Block diagram – types of Sensors and Actuators, – Control Logic Electrical wiring diagram of manual and automatic system – multiplexing between BCM and PCM- control of compressor clutch, blower motor etc.- diagnostics tools and features.
UNIT IV DESIGN OF AIR-CONDITIONING COMPONENTS
Modeling of Fixed and variable Displacement type compressor, evaporator modeling – heat transfer correlations for the fluids inside the evaporator, analysis of evaporator frosting condenser modeling – improvement of refrigerant flow control method.
UNIT V AIR CONDITIONING DIAGNOSIS AND SERVICES
AC system diagnosis based on temperature and pressure measurements, sight glass, sound etc. – refrigerant leak detection- Trouble shooting and Servicing of compressor, evaporator, condenser, heater core – HVAC equipment , recovery and charging. Air routing system service.
TOTAL: 45 PERIODS
OUTCOMES:
Solve the simple problems related to psychrometry and refrigerant
Understand the operation of the individual components of the A/System, sensors, actuators and electronic control
Understand the range of techniques that can be used in diagnosing
Identify faults which affect system performance
Provide adequate knowledge in safe working practice. understanding the correct procedures for A/C service and repair
REFERENCES:
1. Tom Birch, “Automotive Heating and Air Conditioning” Pearson Education Inc., 2003.
2. Boyce H. Dwiggins, Jack Erjavec., “Automotive Heating and Air-Conditioning”, Delmer publisher.,2001.
3. William H Crouse and Donald L Anglin, “Automotive air conditioning”, McGraw – Hill Inc.,1990
4. Steven Daly “Automotive Air Conditioning and Climate Control System”, ButterworthHeinemann., 2006
5. Paul Weiser, “Automotive air conditioning”, Reston Publishing Co Inc., 1990.
6. James D. Halderman, “Automotive Heating, Ventilation, and Air Conditioning Systems”,
7. Pearson Education Inc., 2004.