The drive of the compressor of the conditioner is carried out from a pulley on a forward part of the crankshaft. Inclusion and switching off of the compressor is provided with automatically electromagnetic coupling which makes start-up of air conditioning system for maintenance of working pressure in the necessary limits. In a broad tank with a moisture separator removal of small amounts of moisture and dirt from system is provided.

The sensor of pressure of air conditioning system provides switching off of the electromagnetic coupling of the compressor with too low pressure (at insufficient amount of coolant) or at too high (for maintenance of working pressure in the necessary limits). The sensor also includes the second speed of rotation of the fan of an obduv of a radiator (and the condenser) in process of increase in pressure in system. The control valve of a broad tank provides dumping of pressure at excess of the most admissible safe level.

Fig. 14.4. Arrangement of elements of management of system of heating and conditioning: 1 – external temperature sensor; 2 – top temperature sensor; 3 – lower temperature sensor; 4 – the temperature sensor with electronic control of the conditioner; 5 – conditioner electronic control unit; 6 – panel of the electronic block; 7 – control unit; 8 – handle of management; 9, 10 – an overlay of the control panel; 11 – control unit of a heater; 12, 13, 14, 15 – cables of management; 16 – executive engine; 17 – photosensor of electronic control of the conditioner

Fig. 14.5. An arrangement of units and knots of air conditioning system in a motor compartment and the vacuum drive of the gate of recirculation/inflow: 1 – union of a vacuum hose (airinflow cover drive); 2 – relay of an electromagnetic clutch coupling of the compressor of the conditioner and relay of the fan of an obduv of a radiator of a heater; 3 – vacuum tank; 4 – dvukhkhodovy distributor of the drive of a cover of airinflow; 5 – control vacuum gate; 6 – condenser; 7 – compressor of the conditioner and electromagnetic clutch coupling of the compressor; 8 – a broad tank with a moisture separator and the safety valve; 9 – service cap of the valve of high pressure; 10 – sensor of pressure of turning on of the conditioner; 11 – sensor of temperature of outboard air; 12 – service cap of the valve of low pressure; 13 – broad valve; 14 – drainage valve of the evaporator

The sensor of temperature of 1 (fig. 14.4) of atmospheric air prevents turning on of the electromagnetic coupling of the compressor at too low temperature of atmospheric air. The broad valve 13 (fig. 14.5) provides maintenance of stable temperature in system by tracking of temperature of a stream of coolant at the exit from the evaporator.

In fig. 14.5 the vacuum system which puts the vacuum drive of a cover of airinflow in action is also shown. The drive of a cover of airinflow is provided with giving of the discharge created by the engine on the double-thread electromagnetic distributor.