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System of cooling, heating, ventilation and air conditioning
general information Engine cooling system All models are covered in this manual are equipped with car running at a pressure of the engine cooling system with thermostatically controlled circulation of the working fluid. A water pump mounted on the engine block and provides pumping coolant through the cooling path of the latter. The liquid flow washes the area of location of each of the cylinders in the block, and then sent to the rear of the engine. Paved in molding block and the cylinder head cooling channels provide intensive cooling of the intake and exhaust ports, areas of installation of spark plugs and exhaust valve guides. Since the start of the engine cooling system passes through three modes of operation: the first stage until the water temperature rises above a certain value, it circulates on a small circle of the working circuit which eliminated the radiator. With further heating of the fluid opens poppet valve included in the system path voskozapolnennogo thermostat and connected to the circuit of a radiator. Further, the coolant temperature reaches another reference value, the sensor-activated heat-sensitive switch with an activation of the cooling fan, wherein the additional injected air flow greatly increases the efficiency of the heat exchanger of the radiator. The cooling system has a sealed structure and covered with a lid radiator / expansion tank that can withstand a certain overpressure, which increases the boiling point of the coolant and, accordingly, the efficiency of heat removal through the radiator. When excess internal pressure in the system a certain value, there is an excess flow of coolant through the connecting (overflow) tube into the surge tank. As the cooling system fluid automatically returns from the tank into the radiator. Adding coolant in the system is made through the neck of the expansion tank (see chap. Current care and maintenance), which at the same time also serves as the receiver accumulates displaced by excess fluid from the radiator. Due to these design features, the system is called closed cooling as it excludes any functional loss of the working fluid. Some petrol models, as well as diesel models with engine M612 in the loop water cooling system built tract preliminary electric heater provides rapid heating of the engine in cold weather. Power can be supplied to the heater from the power supply voltage of 230 V or 115 V. The power consumption of the heating element is 500 watts.  | An electric heater can be installed on the appropriate model on an individual basis as part of the optional equipment. |
Heating and ventilation system The heating system consists of fans and heat exchangers arranged in blocks of front and rear portions of the cabin. Hot coolant passes through the heat exchangers. If you move the mode control knob heater located on the control panel (see. Some devices provide comfort), the valve opens and the hot air begins to flow into the vehicle interior. If you turn on the heater fan, air is supplied to the interior force. Outdoor air before getting into the room, passed through a special filter, which settles the main share of the dust particles. Replacing the cabin filter should be done on a regular basis in accordance with the schedule of routine maintenance of the car (see chap. Current care and maintenance). Violation of the cross filter results in a lower performance operation of heating / ventilation / air conditioning. Air distribution system by means of ventilation flaps. You can switch modes of air circulation. The drive is carried out by servo valves. The air conditioning system See. Section General information and safety measures. Specifications Cooling system Common parameters | Cooling system | Closed, water pump, thermostat, radiator fan (electric or viscous clutch) and separately installed expansion tank | | The volume of coolant | See. Specifications | | The composition of the coolant (antifreeze proportion of coolant to ensure frost) | | 50% | | 55% | | Tools and system pressure, atm | 14 |
Thermostat Petrol models | The valve stroke, mm | at least 8 | | Valve activation temperature, ?� C | | 85 ÷ 89 | | 102 |
Diesel models No data available The cover of the cooling system path | Opening pressure built in the cap of the safety valve, atm | - The cover code 140
| | 1.4 +1 | | 1.4 - 1 | - Cover Code 140/200
| - The first step (coolant temperature 130/134 ?� C)
| 1.4 ?� 1 | - The second stage (coolant temperature 137/143 ?� C)
| 2.0 ?� 1 | | The depth of the vacuum, leading to the vacuum valve, atm | 0.1 | | Pressure testing lid atm | 1.4 (cap pressure should be kept for at least 2 minutes) |
The air conditioning system | The type of refrigerant | R134a | | The amount of refrigerant g | | 1050 | | 1070 | | The amount of compressor oil, see 3 | 120 | | Type of refrigerator oil | Synthetic PAG | | Number of compressor oil, top up the replacement of the condenser, see 3 | 20 | | Number of compressor oil, made up by replacing the receiver-dryer, cm 3 | 10 | | Number of compressor oil, made up by replacing the refrigeration line, see 3 | 10 | | Number of compressor oil, top up after the sudden emptying of the system (the destruction of the connecting path) cm 3 | 40 |
Efforts of a tightening of carving connections, Nanometer Cooling system M112 / 113 | Hose clip cooling path | 3 | | Thermostat housing bolts (M6) | 10 | | Flare nut cooling line ATF to the radiator | 20 | | Bolt impeller to the viscous clutch | 10 | | Bolt viscous clutch to the bearing housing (tightened by means of a special device) | 45 | | Tighten the screws on the generator | 42 | | Bolts damper tensioner accessory drive belt | | 25 | | 35 | | Self-tapping screws of the water pump to timing cover | - M6
| | | 14 | | 10 | - M8
| | | 35 | | 25 | | Bolt water pump pulley | 10 |
M612 | Tighten the screws on the trim panel of the cylinder head cover | 10 | | Tighten the screws on the trim panel diffusers | 10 | | Bolts thermostat housing | 9 | | Flare nut cooling line ATF to the oil cooler | 25 | | Bolt impeller to the viscous clutch | 10 | | Bolt viscous clutch to the bearing housing (tightened by means of a special device) | 45 | | Bolt water pump pulley | 35 | | Bolts of fastening of the water pump to timing cover | | 14 | | 20 |
M628 | Bolts thermostat housing | 9 | | Flare nut cooling line ATF to the oil cooler | 25 | | Bolts supporting beam radiator to the front end panel | 19 | | Bolt water pump pulley | 25 | | Bolts of fastening of the water pump to the crankcase | 10 | | Clip bolt circulation pump auxiliary heater (STH) | 4 |
Heating / ventilation / air conditioning | The nut on the expansion valve | 10 | | Bolt the expansion valve to the evaporator heat exchanger | 8 | | Fixing the gauge-switch of pressure / temperature in the pressure line | 8 | | Bolts compressor | | 23 | | 20 | | Fixing refrigerator lines to the compressor | | 23 | | 20 | | Flare Nut refrigeration line to the condenser | 33 | | Attaching lines to the receiver-dryer | 17 |
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