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The air conditioning system with a circulating coolant
The drive is provided by the air conditioning compressor pulley on the front of the crankshaft. Switching on and off of the compressor is provided automatically by electromagnetic clutch, which makes start-conditioning system to maintain the operating pressure in the right range. The expansion tank with water separator ensures removal of small amounts of moisture and dirt out of the system. The pressure sensor provides an air-conditioning system off the electromagnetic clutch of the compressor when pressure is too low (in case of insufficient amount of refrigerant) or too high (in order to maintain the operating pressure in the desired range). The sensor also includes a second rotation speed blower radiator (and capacitor) with increasing pressure in the system. A check valve allows the expansion tank pressure release in excess of the maximum safe level.
| Fig. 14.4. Location control of heating and air-conditioning: 1 - external temperature sensor; 2 - the top temperature sensor; 3 - Lower the temperature sensor; 4 - temperature sensor, electronically controlled air conditioning; 5 --ECU; 6 - the panel of the electronic unit; 7 - the control unit; 8 - control knob; 9, 10 - control panel overlay; 11 - the block of management of a heater; 12, 13, 14, 15 - control cables; 16 - the executive engine; 17 - photocell electronic control air conditioner
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| Fig. 14.5. Location units and units of the air conditioning system in the engine compartment of the vacuum and the recirculation / inflow: 1 - the union of a vacuum hose (vozduhopritoka drive cover); 2 - The relay electromagnetic clutch C compressor relay Blower heat exchanger; 3 - vacuum tank; 4 - two-way valve actuator cover vozduhopritoka; 5 - Control vacuum valve; 6 - capacitor; 7 - the air conditioning compressor and the electromagnetic clutch of the compressor; 8 - expansion tank with water separator and pressure relief valve; 9 - service valve cap of high pressure, 10 - the gauge of pressure the air conditioner; 11 - air temperature sensor outboard; 12 - service valve cap of low pressure; 13 - expansion valve; 14 - drain valve of the evaporator
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The temperature sensor 1 (Fig. 14.4) air prevents the inclusion of the electromagnetic clutch of the compressor at too low temperature air. Expansion valve 13 (Fig. 14.5) maintains a constant temperature in the system by monitoring the temperature of the flow of refrigerant leaving the evaporator. In Fig. 14.5 also shows a vacuum system, which activates the vacuum actuator cap vozduhopritoka. Drive cover vozduhopritoka supplies vacuum created by the engine, to the two-way solenoid valve.
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