Patent ID: 6705259
Filing Date: 2004-03-16
Classification: F01L,F02D,Y02T

Abstract:
An internal combustion engine, comprising:a camshaft having at least one set of cam lobes, said at least one set of cam lobes including a low-lift cam lobe, a medium-lift cam lobe and a high-lift cam lobe; and a three-step cam-profile-switching roller finger follower, including a body having a low-lift body section, a high-lift body section and a medium-lift body section, a low, high and medium cam follower carried by said low-lift, high-lift and medium-lift body sections, respectively, said low, high and medium cam followers engaging said low-lift, high-lift and medium-lift cam lobes, respectively, at least one locking assembly selectively coupling together and decoupling said low and said high-lift body sections, and selectively coupling together and decoupling said low and said medium-lift body sections, wherein at least one of said low-lift cam lobe and said medium-lift cam lobe is offset relative to said high-lift cam lobe.