valvematic

The Valvematic system offers continuous adjustment to lift volume and timing, and improves fuel efficiency by controlling the fuel/air mixture using valve control rather than conventional throttle plate control.[3] The technology made its first appearance in 2007 in the Noah[4] and later in early-2009 in the ZR engine family used on the Avensis. This system is simpler in design compared to Valvetronic and VVEL, allowing the cylinder head to remain at the same height.