The howstuffworks site is awesome, but dated. Anyone know how iVTEC works?

 

iVTEC works the same way as VTEC but it also varies the cam timing. VTEC only varies valve timing and lift.

 

From how stuff works
Several engine manufacturers are experimenting with systems that would allow infinite variability in valve timing. For example, imagine that each valve had a solenoid on it that could open and close the valve under computer control rather than relying on a camshaft. With this type of system, you would get maximum engine performance at every rpm range. Something to look forward to in the future...


I thought of this idea about 15 years ago....I still can't believe no one has pulled it off yet.