Infiniti QX4 service since 1996 of release
1. Introduction
2. Maintenance instruction
3. Routine maintenance
4. Engine
5. Cooling and heating systems
5.1. Specifications
5.2. Antifreeze - general information
5.3. Service of system of cooling
5.4. Removal, installation and check of serviceability of functioning of the thermostat
5.5. Removal, regenerative repair and installation of a radiator of system of cooling
5.6. Replacement of the water pump
5.7. Removal and installation of the fan of system of cooling
5.8. Air lines of distribution of air submitted to salon
5.9. System of automatic air conditioning – a design and a functioning principle
5.10. Design of a refrigerator path of central air of air
5.11. The To/in compressor, - the general information and a functioning principle
5.12. A receiver dehumidifier - the general information and service
5.13. Check of serviceability of functioning and service of systems of heating and air conditioning
5.14. Diagnostics of central air of air
6. Power supply systems and managements
7. Start and charge systems
8. Transmission line
9. Brake system
10. Suspension bracket and steering
11. Body
12. Electric equipment
 












5-10-konstrukciya-refrizheratornogo-trakta-sistemy-kondicionirovaniya-vozdukha.html

5.10. Design of a refrigerator path of central air of air

The refrigerator path of central air has the standard organization.


Scheme of the organization of a refrigerator path of central air of air

After an exit from the compressor the coolant is banished via the condenser, arrives in a receiver / dehumidifier, is pumped over via the evaporator and comes back back to the compressor. Process of transition of a coolant in a gaseous state is supervised from the outside by means of the evaporator of the broad valve built in assembly.

Protection of system against excessive fall / increase of pressure is carried out by means of the sensor switch built in in a receiver — as soon as pressure in system falls outside the limits an admissible range (up or down), the sensor switch is disconnected, stopping compressor functioning.

Besides, the safety valve which is carrying out emergency dumping of surpluses of a coolant in the atmosphere at excess by pressure in a path of value in 3.73 kPas is built in a back part of the compressor.


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5.9. System of automatic air conditioning – a design and a functioning principle
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5.11. The To/in compressor, - the general information and a functioning principle