Description of cooling system

Cooling system


Description of cooling system
These engines use liquid cooling system for an indoor-type with forced circulation multielement coolant and thermostat, having a bypass valve in the inlet pipe cooling giving liquid.
The cooling system includes: cooling jacket (in the block cylinder ¬ ditch and into the cylinder head), ra ¬ diator, the cooling fluid pump ¬ STI, thermostat, electric fan ¬ lators of the cooling system, connective ¬ relatively hoses and other items. Coolant heats¬ May cooling jacket, forcing ¬ etsya liquid pump radiation in ¬ torus, where it is cooled by a fan and a counter flow of air that occurs when motion ¬ SRI vehicle. Then cooled liquid returns schaya ¬ pv ¬ pate in cooling through ca ¬ pump and cools the engine. Cooling jacket is a network of channels for the passage of fluid. These channels are formed by gaps between the sleeves chi ¬ Lindrum in the cylinder block and com ¬ schayutsya with channels in the cylinder head. The fluid motion that is organized ¬ Thus, to ensure that NAI-more efficient cooling of the engine components that are more heat during its operation (in particular, the upper belt of the engine cylinder and combustion chambers).
Radiator (except A number 1 (MY2)) radiator located in front of the vehicle and is designed to cool the coolant flowing from the cooling jacket. The radiator consists of left and right tanks and core radiator to Thoraya ¬ connects the two tank. The upper reservoir is located inlet through which coolant is supplied from the cooling jacket and hose to bypass excess coolant or steam. In the lower radiator tank is the outlet of coolant, through which she entered in the em ¬ coolant pump and drain tap, through which cooling fluid is removed. The core of the radiator has a set of finned tubes ¬ stvo in which a thread passing through the coolant from the top of the DIT ¬ in the lower reservoir, as well as cooling fins to dissipate heat more effectively to the environment. The coolant is heated as it passes through the cooling jacket, cooling water in the radiator ¬ etsya air flow prosasyvaemym electric-tilyatorom veins, as well as counter-flow com ¬ air, which occurs during the motion of the car ¬ zhenii. Models with automatic transmission ¬ matic have spe ¬ Alno coolant fluid automatic transmission, co-tory is located in the bottom tank radiator. A fan with an electric ¬ Skim drive located behind the radiator, which facilitates the passage ¬ tion of air flow through the radiator. The fan is turned on only when the temperature of cooling water ¬ ing liquid reaches the operating value ¬ radiation. This reduces the cost of power to drive the fan and prevent hypothermia ¬ schaet engine.


Diagram engine cooling system 4A-F, 5A-F, 4A-FE (AE92, AE95, AT171, AT180). 1 - Thermostat, 2 - input ¬ Noah coolant pipe, 3 - (from Radiata ¬ pa), 4 - outlet coolant, 5 - (the radiator), 6 - water pump, 7 • (from the heater), 8 - (to the heater), 9 - a tube for supplying coolant to the pump, 10 - valve supplementary air, 11 - overflow pipe cooling ¬ giving fluid (for heating the additional temperature ¬ ha).
Note: The cooling system of engines 4A-5A-F Rea no overflow tube coolant to heat the additional air (positions 10 and 11).
Diagram engine cooling system 4A-FE (AT190 and AE101), 5A-FE and 7A-FE. 1 - Thermostat, 2 - input Patry ¬ side coolant, 3 - (from the radiator), 4 - ¬ you're low-waste coolant nozzle, 5 - (¬ a radiation torus), 6 - water pump, 7 - (from the heat- A) 8 - (to heater). 9 - tube inlet to the coolant pump, 10 - (from the heater throttle), 11 - (to the heater throttle screen ¬ s), 12 - radiator.
Features of the radiator for AYU11 (NH2)
The radiator for the model differs from the MR2 Radiator other models so that the flow of coolant in it goes in the horizontal direction on the one hand automo ¬ lence on the other. The radiator has two bo ¬ kovyh tank and a heart, which connects them. Inlet, at which ¬ rum coolant enters the radiator from the cooling jacket, and tap to drain the coolant fluid ¬ STI located in the left tank. You ¬ low-waste pipe cooling fluid ¬ STI and air drainage tap for easy filling of the engine coolant, is located in the right ¬ HN tank. Cooler work ¬ whose fluid models with automatic transmission ¬ Ceska located in the heart of the radiator, and uses some of its handsets. Cork Radiator has the usual structure, but Raspaud ¬ lozhena on a separate socket.
Cork filler pa-diatora (plug radiator) Cork radiator - seal T ¬ na, it must be sealed ra-diator, and withstand high pressure, resulting from thermal expansion of the coolant. Increased pressure in pa ¬ diatore prevent boiling Okhla-maintainer liquid even at temperatures ¬ round above 100 ° C. Cork has a steam radiator (dropping) the valve and air valve (valve of rarefaction). When the coolant temperature is 110-120 ° C the excess pressure inside the radiator ¬ tion caused by thermal expansion of liquid dos ¬ Tiga 0.3-1.0 kg/cm2 or 30-100 kPa. In the case of exceeding this limit ¬ la by the pressure of the Xia ¬ opens the steam valve and steam removed Th ¬ res a steam pipe. The air valve is opened under the thinness of ¬, which is formed inside the torus radiative ¬ after stopping the engine, and Snee ¬ zheniya coolant temperature. Opening this valve allows us to ¬ coolant expansion tank back into the cooling system.
Expansion Tanks Expansion Tanks intended for storage-chen excessive amount of ¬ coolant, which is obtained as a result of thermal expansion when heated. When the coolant temperature falls, it comes back from the surge tank at radiation ¬ torus. Thus, the cooler is always filled with cooling liquid, and thus avoid unnecessary loss of her. To ensure necessary conductivity ¬ ¬ topping coolant liquid bone, it is necessary to check its UB ¬ Wen in the expansion tank.
Water Pump Water Pump ensure pechivaet ¬ forced circulation of cooling fluid through the cooling system. It is installed in front of the cylinder block and driven from the crankshaft belt drive generator.
Thermostat
The thermostat is set at the entrance ¬ rated pipe cooling circuit. It has a waxy clusters ¬ overflow pan and an automatic valve controlled depending on the temperature so ¬ coolant. Automatic valve closes when the coolant temperature falls, and thus pre ¬ hinders the circulation of the liquid Th ¬ cut the engine, accelerating the process of warming up. At the same time the bypass valve opens automatically when you close the valve, then oh ¬ lazhdayuschaya fluid circulates only within the engine (the small loop cooling system). When the coolant temperature increases, the automatic thermostat valve opens, and the census SKNOU ¬ valve (if fitted) is closed, which allows cooling fluid to circulate giving ¬ ¬ Th cut the radiator. Wax filler inside the power element is the thermostat ¬ expands when heated and contracts when cooled. Heating the wax filler force element creates a force overcoming the spring force colliding ¬, ¬ viem under the action of which the valve is held closed, so is the opening of the valve automatically ¬. When cooled wax ¬ Vaga filler it is compressed, and the action of the spring force aB ¬ tomatichesky valve closes. These engine models, thermo ¬ stat maintains pa ¬ bochey coolant temperature of about 82 ° C.