Patent ID: 7926456
Filing Date: 2011-04-19
Classification: F01L,Y10T

Abstract:
1. A continuously variable valve lift system comprising: an input cam; a drive shaft positioned substantially in parallel with the input cam; a lifter disposed at the drive shaft and pivoting around the drive shaft in response to a rotation of the input cam; an output cam disposed at the drive shaft coaxially with the lifter and pivoting around the drive shaft, the output cam comprising a contact portion and a lift activation portion; a valve unit configured to be opened or closed by the lift activation portion of the output cam; a return spring supplying restoring force to the contact portion of the output cam; and an adjusting unit disposed substantially at the drive shaft and adjusting a distance between the drive shaft and a contact point formed between the adjusting unit and the contact portion of the output cam; wherein the lifter comprises a first hand and a second hand, wherein an angle between the first hand and the second hand is obtuse and a distal end portion of the first hand is substantially above the drive shift; and wherein the adjusting unit comprises: