Circuit Description
WARNING: This page is about a different variant/trim than selected.
In order to improve engine performance at low and high engine speeds, the VVTL-i (Variable Valve Timing and Lift-intelligent) system varies the lift of the intake and exhaust valves using the standard (low and mid speeds) cam and high lift (high speed) cam. This delivers high engine performance without affecting fuel economy or emission performance. When the engine speed reaches 6,000 rpm, the ECM signals the OCV for VVTL-i to switch from the standard cam to the high lift cam, using hydraulic (engine oil) pressure. At high engine speeds, the ECM stimulates the OCV (Oil Control Valve) to apply hydraulic pressure to the piston located in the rocker arm, and switches the rocker arm by locking the slipper.