- The EGR function is controlled by the electronic unit via a solenoid valve controlled by the cyclic opening law.
- The EGR valve is pneumatically controlled. Its opening is a function of the control electrical signal of the electromagnetic valve.
At:
- I = 1.1 A - fully open
- I = 0 A - closing
- 0 A < I < 1.1 A - partial opening
The control electrical signal supplied by the control unit to the solenoid valve depends on the following conditions:
- loads;
- regime;
- altitude above sea level;
- coolant temperature;
- air temperature.
In any case, the EGR system is switched off if the air temperature is less than 19°C and the coolant temperature is less than 40°C, and also if the vehicle is not moving and the engine is idling for more than 20 seconds.
[Material is located on the source website RENAULTBOOK.ru]