As well as Valvetronic. They're also doing research into camless engines, since at least the late 90's / early 2000's: http://www.nytimes.com/2003/08/21/technol

As well as Valvetronic. They're also doing research into camless engines, since at least the late 90's / early 2000's: http://www.nytimes.com/2003/08/21/technology/circuits/21next.html http://www.nytimes.com/2003/08/21/technology/circuits/21next...