June 13, 2007
Toyota develops new “Valvematic” next-generation valve lift
Vancouver 2010 Winter Olympic license plate; photo courtesy BCPL8s.ca. Click image to enlarge
Tokyo, Japan – Toyota Motor Corporation has announced its development of Valvematic, a variable valve lift mechanism that combines the company’s VVT-i (Variable Valve Timing-intelligent) with a new mechanism that continuously controls the intake valve lift volume.
By adjusting the volume of air taken in by intake valve lift, Valvematic ensures optimal performance based on the engine’s operational condition, and achieves both high fuel efficiency and performance. In the case of a new 2.0-litre engine developed by the company, Valvematic improves fuel efficiency by 5 to 10 per cent, reduces CO2 emissions, boosts output by at least 10 per cent, and enhances acceleration responsiveness.
The company says it plans to introduce Valvematic shortly, starting with a new vehicle model featuring a 2.0-litre engine. Toyota also says it plans to completely revamp its gasoline engine and transmission line-up by 2010.