Range Rover Evoque: Engine Cooling - Component Location, System Operation and Component Description

Component Location

COMPONENT LOCATION

1. Heater core
2. Air Conditioning (A/C) Evaporator (ref only)
3. Heater inlet hose
4. Heater outlet hose/Oil cooler inlet hose
5. Turbocharger water outlet pipe
6. Water outlet
7. Transmission fluid cooler
8. Electric cooling fan - Left Hand (LH)
9. Radiator top hose
10. By-pass hose
11. Degas tank
12. Charge air cooler (reference only)
13. Electric cooling fan - Right Hand (RH)
14. Thermostat and housing
15. Water pump
16. Block heater (where fitted)
17. Engine oil cooler
18. Turbocharger
19. Turbocharger water inlet pipe
20. Radiator bottom hose
21. Engine coolant drain plug
22. Transmission oil cooler (hot climate markets only)
23. A/C condenser (reference only)
24. Engine cooling radiator

Overview

OVERVIEW

The pressurized cooling system allows coolant to circulate around the engine and the heater circuit while the thermostat main valve is closed. The primary function of the cooling system is to maintain the engine within an optimum temperature range under changing ambient and engine operating conditions. Secondary functions are to provide automatic transmission fluid cooling, turbocharger cooling and interior cabin heating.

When the engine is running the coolant is circulated around the engine cooling system by the coolant pump. From the coolant pump, coolant flows through the cylinder block and the cylinder heads. Some of the coolant leaving the engine is directed through the turbocharger before returning to the water outlet.

The main engine thermostat is located at the engine inlet up-stream of the water pump. During initial engine warm up the thermostat main valve is closed: preventing coolant flow through the radiator and transmission cooler. When the thermostat main valve is closed, coolant is circulated through the bypass circuit, cabin heater, engine oil cooler and degas tank to allow these systems to function during warm up.

Once the coolant temperature exceeds the thermostat start to open temperature of 82-90

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