Location of elements
Pos. | spare part no | Name |
1 | - | Upper Radiator Hose |
2 | - | Top cooling fan shield |
3 | - | Expansion tank |
4 | - | Car interior heater connections |
5 | - | Exhaust gas recirculation system heat exchanger (EGR) |
6 | - | EGR cooler outlet hose |
7 | - | bottle hose |
8 | - | Fuel System Radiator |
9 | - | Oil radiator |
10 | - | coolant pump |
11 | - | Supply and return hoses of the fuel cooling system |
12 | - | Cooling Fan Bottom Shield |
13 | - | Lower Radiator Hose |
14 | - | Thermostat assembly |
15 | - | Intercooler |
Review
A bypass type system is used as a cooling system, which circulates coolant through the engine and heater circuit when the thermostat is closed. The main purpose of the engine cooling system is to maintain the optimum temperature in the cooling system when changing environmental conditions and the operation of the engine itself. Other functions of the cooling system include heating the vehicle interior and cooling the exhaust gas recirculation system (EGR).
The cooling system consists of:
- radiator
- car interior heater
- EGR cooler
- coolant pump
- expansion bottle
- cooling fan
- Connecting hoses and pipelines
The coolant circulates through the system under the action of a centrifugal type pump installed in the front left side of the engine and driven by an additional V-ribbed belt. The coolant pump circulates coolant through the cylinder block and head, radiator, heater core, and EGR cooler connected by coolant lines.
The thermostat is located in the bottom tube assembly on the inlet side of the refrigeration circuit; it provides constant control of the temperature of the coolant in the engine.
The horizontal flow radiator has an aluminum core and molded plastic tanks. The radiator tanks are equipped with brackets for attaching the fan shroud, intercooler and (if available) air conditioner condenser. The lower part of the radiator is mounted on rubber bushings, which rest on brackets attached to the side members of the body. The upper part of the radiator is located in rubber bushings, which are fixed with brackets mounted on the hood cover platform.
The air-to-air intercooler is located in front of the radiator and serves to cool the charge air from the turbocharger to the engine.
For more information, see the chapter: Intake air distribution and filtration (303-12 Intake air distribution and filtration - Diesel engine ID4 2.4L, Description and principle of operation).
The upper radiator hose is connected to the cooling system outlet pipe, which is bolted to the cylinder head. The upper hose has a connection for the fluid supply pipe to the heater core. The lower radiator hose runs around the front of the engine and connects to the thermostat assembly.
The lower hose is also equipped with a return connection for the fuel cooling system. The fuel cooling system supply pipe is connected directly below the lower hose connection on the right side of the radiator.
The expansion tank is mounted on the right suspension support cup in the engine compartment. The expansion tank receives excess coolant that occurs as a result of expansion when the engine is heated, and releases the liquid into the cooling system when it cools.
The EGR cooler is located in the coolant return line from the engine and top hose. The fluid cools the exhaust gases returned to the intake manifold, thereby reducing harmful emissions.
The heater radiator outlet hose has a built-in bleeder to bleed air when coolant is added.
Comments on this article