Renault Koleos Service Repair Manual: Oil vapour rebreathing circuit: Operating diagram

2TR

I - Under low loads, the oil vapour is rebreathed through the PCV valve

1. Fresh air
2. Oil vapour

1. PCV valve
2. Fresh air hose

II - Under medium and heavy loads, the oil vapour is rebreathed through the PCV valve and the fresh air hose

1. Oil vapour

1. PCV valve
2. Fresh air hose

M9R

1. Engine
2. Oil separator
3. Air filter unit
4. Air filter unit air outlet duct
5. Turbocharger

Exhaust gas recirculation: Operating diagram

M9R

1. Engine
2. Air filter unit
3. Turbocharger
4. Intercooler
5. Air inlet valve
6. Turbocharging pressure sensor housing
7. Exhaust gas recirculation solenoid valve control
8. Intake distributor
9. Exhaust manifold
10. Exhaust gas cooler
11. Diesel injection computer

Fuel vapour recirculation circuit: Operating diagram

2TR

OPERATING DIAGRAM OF THE CIRCUIT

1. Inlet manifold
2. Throttle valve
3. Fuel vapour absorber bleed solenoid valve
4. Fuel vapour absorber
5. Fuel tank
6. Fuel anti-return valve
7. Fuel filler cap
8. Fresh air vent
9. Fresh air
10. Fuel vapour absorber drain stop solenoid valve
11. Fuel vapour pressure sensor
12. Anti-return valve
13. Anti-return valve bypass solenoid valve