5.4.1. Design features
Fig. 3.21. Details of system of cooling: 1 — a heater radiator; 2 — electric motors of fans; 3 — casings of fans; 4 — krylchatka of fans; 5 — a radiator; 6 — a broad tank; 7 — TNVD with the device for start-up of the cold engine (CD20 engine); 8 — laying; 9 — the water pump; 10 — a pulley of the water pump; 11 — the sensor of the index of temperature of cooling liquid; 12 — a taking-away branch pipe of system of cooling; 13 — the sensor of temperature of cooling liquid (a control system of the engine); 14 — the thermostat case; 15 — the thermostat; 16 — a branch pipe of a supply of cooling liquid; 17 — the oil filter; 18 — an arm of fastening of the oil filter; 19 — a water oil cooler; 20 — the fastening plug; 21 — a cover
In the engine the liquid system of cooling of the closed type with compulsory circulation is applied. The structure of system is specified fig. 3.21
. Electrofans turn on the electronic control unit (EBU) depending on speed of movement of the car, temperature of cooling liquid and turning on of the conditioner (at its existence).
The water pump 9 of centrifugal type fastens to the block of cylinders and is brought into rotation by a maple belt of a drive of the pump of the hydraulic booster of a steering from a pulley of a cranked shaft of the engine.
The radiator 5 consists of vertically located orebrenny aluminum tubes and plastic tanks with cooling liquid. It is established in a forward part of the car.
Applied cooling liquid: a mix of 50 % of water and 50 % of the antifreeze, not freezing to temperature — 25 ° S.Davleniye of operation of the final valve of a stopper of a radiator of 8 — 10 Pas.
The broad tank 6 of plastic fastens in a motor compartment before an arch of the right wheel. The aluminum water oil cooler is established behind the block of cylinders and serves for additional cooling of oil by means of circulation of cooling liquid in a zone of fastening of the oil filter.
The thermostat 15 is established in the case 14 over the oil filter. Temperature of the beginning of opening of the main valve 88 ° S.Hod of the main valve at temperature 100 ° With — 10 mm. The sensor of temperature of cooling liquid is similar applied on petrol engines.
The relay of turning on of electrofans is located in the block of the relay established on an arch of the right wheel in a motor compartment. The block of electrofans consists of two identical fans which join on the signals arriving from the sensor. Temperature of turning on of the 1st fan 90 ° With, switching off — 83 ° S.Temperatura of inclusion
The 2nd fan 105 ° With, switching off — 98 ° Page.
Fig. 3.22. Arrangement of jams of drain openings of system of cooling: I\on the block of cylinders; II\in the bottom of a radiator
The arrangement of jams of drain openings of system of cooling is given on fig. 3.22