Abstract
New continuously variable valve phase and lift/duration mechanism for widely available automobile engines has been developed. The mechanism enables to continuously change the phase and lift/duration simultaneously during the engine operation. Multi-body dynamics simulation oriented study predicted the unexpected problems for the initial designs and enables to improve the system without experiment. The prototype mechanism on the single cylinder head is successfully operated up to 7000 rpm, the targeted range of engine speed. The development process to find the new mechanism and design components are described in this paper.
