Cooling System (Supplementary Information)

Cooling system




1. Radiator
2. Engine oil cooler
3. Water cooled turbocharger (TC)
4. Heating pipes for the climate control
The following modifications to the cooling system have been made compared to the other 5 cylinder engines:
- The radiator (1) is larger and has a greater cooling capacity.
- An engine oil cooler (2) is built into the right radiator tank through which the oil flows in a number of flat ducts surrounded by coolant.
- Terminals for turbocharger (TC) water cooling (3) have been added.
- Modified routing of the climate control system heating pipes (4) to save space.
The intake manifold for the turbocharger (TC) cooling is connected to one of the cooling system coolest points. The coolant circulates through the turbocharger (TC) even after the engine is switched off because the turbocharger (TC) heats the coolant and makes it rise to the expansion tank and allows cooler coolant to enter via the inlet pipe. Circulation continues until the temperatures are equal.

The left radiator fuel tank contains the automatic transmission cooler which is of a similar design.

The radiator thickness has been increased from 32 to 42 mm.

The cooling system holds about 7 liters which is approximately 0.2 liters less than the other 5 cylinder engines, this is because of the space taken by the engine oil cooler in the radiator.