Patent ID: 7673604
Filing Date: 2010-03-09
Classification: F01L,F01M,F02F

Abstract:
1. An engine comprising a valve, said valve comprising a stem, said stem being positioned within a valve lifter, said valve lifter being positioned within a guide opening defined within a cylinder head, said cylinder head comprising a bearing main body, a cam cap coupled to the bearing main body, a cam shaft comprising a journal surface and said journal surface being positioned between said cam cap and said bearing main body, said cam shaft defining an axial oil passage extending axially through at least a portion of said cam shaft, said cam shaft also defining a radial oil passage extending radially through at least a portion of said cam shaft, said radial oil passage being fluidly connected to said axial oil passage, said radial passage extending through said journal surface, an oil collecting recess being defined between said bearing main body and said cam cap, at least one delivery passage also being defined between said bearing main body and said cam cap, said at least one delivery passage being in fluid communication with said oil collecting recess, said guide opening comprising a guide surface extending from said at least one delivery passage toward said valve lifter such that oil can be directed to a gap defined between a portion of said valve lifter and said guide opening.