The book system presents the principles for the construction and dismantling maintenance of the car air-conditioning system, covering the role of the car air-conditioning system, classification, use, composition, maintenance, maintenance, electrical control, performance inspection, demolition repair, repair and replacement, troubleshooting and examples. It focuses on the operational steps and priorities of maintenance, and the more complex and hard-to-understand content is presented in the form of “micro-video teaching with textual content”, which is intuitive and easy to understand。
This book can be used as a guide for rapid entry and upgrading of vehicle maintenance techniques, as well as as as a reference course for students and teachers in automobile-related professions at auto maintenance training institutes and vocational technical colleges。
Directory
Chapter i: knowledge of car air conditioning systems
Section i. Role of car air-conditioning systems 1
Section ii classification of car air conditioning 2
Section iii. Use of car air conditioning 4
Chapter ii composition and operation of the car air-conditioning system
Section i. Composition of the car air-conditioning system 8
Section ii. Structure and working principles of vehicle air-conditioning refrigeration systems 9
Section iii. Structure and working principles of the car air-conditioning heating system 18
Section iv. Composition and working principles of vehicle air-conditioning ventilation and air purification systems
Section v. Role and operation of the vehicle air-conditioning system sensors 21
Chapter iii maintenance and maintenance of car air-conditioning systems
Section i. Daily maintenance of car air-conditioning systems
Section ii. Periodic maintenance of vehicle air-conditioning systems
Section iii. Method of maintenance inspection of vehicle air-conditioning systems 27
Section iv. Refrigerant inspection
Section v. Cleaning or replacement of air filters 32
Chapter iv. Circuits and control principles for car air conditioning control systems
Section i. Composition of the auto air-conditioning control system
Section ii. Circuit chart of the auto air-conditioning system
Section iii. Principles of control of the auto air-conditioning system
Chapter v. Vehicle air conditioning performance check
Section i. Security operational care 42
Section ii. Pressure testing of air conditioning systems
Section iii. Identification of refrigerants
Section iv. Refrigerant recovery and notation 51
Section v. Use of electronic halogen filters
Section vi. Use of air conditioners
Chapter vi. Dismantling, inspection and replacement of parts and components of vehicle air-conditioning systems
Section i. Dismantling and installation of wind-drivers
Section ii. Dismantling, inspection and installation of compressors
Section iii. Dismantling and installation of condensers
Section iv. Inspection and replacement of temperature sensors in vehicles 92
Section v. Inspection and replacement of ambient temperature sensors 95
Section vi. Inspection and replacement of preevacuator temperature sensors 97
Section vii. Inspection and replacement of sunlight sensors 104
Section 9. Air conditioners panel dismantling 108
Chapter vii. Rapid overhaul and troubleshooting of air conditioning systems
Section i. Fast-track repairs and troubleshooting based on surface pressure 117
Section ii. Refrigeration compressors cannot initiate failure fast-track and fail-out methods 124
Section iii. Interruptive air flow failure fast-tracking and trouble-shooting methods 125
Section iv. Rapid air-conditioning and troubleshooting at high speed only 125
Section v. Insufficiency of cooling wind, extensive frost failure fast-tracking and trouble-shooting methods for evaporation and low pressure tubes 126
Section vi. Automatic failure of compressors
Section 7. Overpressure side pressure, hyperpressure side pressure, low failure rapid overhaul and troubleshooting
Section viii. Rapid overhaul and troubleshooting of the fumes bubble failure in the vision mirror 127
Chapter viii. Examples of breakdowns and exclusions in air conditioning systems
Section i. General
Section ii. Inner temperature sensor circuit failure diagnosis and removal (b1411/11) 132
Section iii. Diagnosis of breakdown of ambient temperature sensor circuits (b1412/12) 136
Section iv. Diagnosis and elimination of evaporationr temperature sensor circuits (b1413/13) 139
Section v. Passenger side sunlight sensor circuit failure diagnosis and removal (b1421/21) 142
Section vi pressure sensor circuits (b1423/23) failure diagnosis and removal
Section vii. Passenger side-air mixed wind portal control for electrical motor circuit failure diagnosis and removal (b1441/41) 150
Section viii. Diagnosis and elimination of malfunctions in the air and wind portal control of the servine motor circuit (b1442/42) 151
Section ix. Windgate control and electrical motor circuit failure diagnosis and removal 153
Section x. Diagnosis and elimination of compressor electromagnetic valve circuits (b1451/51) 154
Section xi. Bus ic communication failure diagnosis and removal (b1497/97) 157
Section xii. Diagnosis and elimination of electrical circuit failure by wind-drive motors 160
Section xiii. Thermal control panel electrical circuit failure diagnosis and elimination 165
Section 14 ptc path failure diagnosis and removal of heaters
Section xv. Diagnosis and elimination of major signal circuit failure 173
Section xvi. Generator signal circuit failure diagnosis and removal 175
Section xvii ig power circuit failure diagnosis and removal 177
Section xviii lin communication circuit failure diagnosis and removal
