VVL Engagement point??

[Damo-Sri]

This vid shows a 3d cutaway of a honda vtec piston/valves/cam etc, but as my understanding goes the vvl technology is very similar. Is it a surge of oil that pushes the central pin/rod together or is it mechanical?
http://videos.streetfire.net/video/wm/ddd90961-2de2-4acc-b5f4-7752f982ed3a.htm

 

[rowdy-GTi]

I`m sure oil pressure has to reach a certain point then solenoids activate the VVL. Either that or it kicks in at a certain RPM.

Cool vid though.

 

[Damo-Sri]

I`m sure oil pressure has to reach a certain point then solenoids activate the VVL. Either that or it kicks in at a certain RPM.

Cool vid though.

Thats good i thought i may have been talking shite.

 

[sprint]

im sure its based on rpm rather than oil pressure like the vtec system is, hence why it can be adjusted electronically. not 100% sure with that though, i know vtec can be adjusted but i think that must have something to do with decreasing the oil pressure needed or something along those lines

 

[stracyznski]

The VE cam switch is activeated on a combination of electronic puses from the revs, speed and throtal position. The switch opens a valve that in the additional oil feed needed for the VE head that locks in the cam follower for the high lift cams....

 

[dagnut]

its rpm triggered but it wont activate properly unless you have the right oil levels

 

[iamhappy46]

Need the correct oil pressure to lock the rockers together, as well as having the 2 VVL solenoids triggered electronically to get cam shift.

It is very similiar to Honda's VTEC. However, the K20 i-VTEC engine is based on the SR20VE system because Nissan are just better