VVT explained
Here is some additional info about the camshaft phase shift system as used on the Clio RS. (2000-2005)
The VVT system is only active after certain conditions are met, like coolant temperature / battery voltage etc.
Once these conditions are met , the ECU looks up engine load and rpm in a 3D table and activates/deactivates the cam shifter accordingly.
For the 182 that means VVT is active from 1450 to 6850 rpm and from light/moderate load to full load.
The 172 shifts back 150 rpm earlier. All settings can be changed as required.
As most of you know the VVT is a 2-step ON/OFF system. However the ECU is capable of sending a PWM signal which turns the solenoid on/off in 6 steps. From 25 - 100 % duty. Renault does for some reason, NOT implement this feature on the 2000-2005 models.
Here is some additional info about the camshaft phase shift system as used on the Clio RS. (2000-2005)
The VVT system is only active after certain conditions are met, like coolant temperature / battery voltage etc.
Once these conditions are met , the ECU looks up engine load and rpm in a 3D table and activates/deactivates the cam shifter accordingly.
For the 182 that means VVT is active from 1450 to 6850 rpm and from light/moderate load to full load.
The 172 shifts back 150 rpm earlier. All settings can be changed as required.
As most of you know the VVT is a 2-step ON/OFF system. However the ECU is capable of sending a PWM signal which turns the solenoid on/off in 6 steps. From 25 - 100 % duty. Renault does for some reason, NOT implement this feature on the 2000-2005 models.
