Patent ID: 6357405
Filing Date: 2002-03-19
Classification: F01L

Abstract:
A four-cycle engine having a combustion chamber and at least one poppet type valve supported for movement between an open and closed position for fluid interchange with said combustion chamber, a single rotating cam associated with said valve, an actuating mechanism interposed between said single rotating cam and said valve for operating said valve and for adjusting both the degree of lift and the lift curve of said valve so as to change the timing and lift operation of said valve, said actuating mechanism comprising a first rocker arm supported for pivotal movement about a first rocker arm axis and having an end thereof in operative engagement with said valve for operating said valve, a second rocker arm interposed between said first rocker arm and said cam lobe and moveable relative to said first rocker arm and said cam lobe, said second rocker arm being supported for pivotal movement about a second rocker arm axis, and an operating lever pivotal about said first rocker arm axis for moving said second rocker arm axis relative to said first rocker arm axis.