They are managed (according to principle «Not really») Injection control unit with two solenoid valves mounted on the cylinder head covers.
The valves allow the supply of oil to control the phase regulator, depending on the operating conditions of the engine:
- if the coolant temperature is above -40°C;
- if the air temperature exceeds -30°С;
- after a time delay of 2 s after starting the engine;
- engine speed is in the range of 1500-4500 min-1;
- if there are no problems with the injection system.