Patent ID: 6796281
Filing Date: 2004-09-28
Classification: F01L,F02B,F02F

Abstract:
An internal combustion engine with a valve train, comprising:a rocker arm having a proximal portion which is spherically supported by an oscillating support member and an operating portion abutting with an engine valve; a camshaft having a cam adapted to be brought into sliding contact with said rocker arm and disposed above said rocker arm, wherein said engine valve is operated to open and close by said rocker arm which is oscillated by said cam which rotates together with said camshaft, wherein said camshaft is supported in a cam holder fastened to a cylinder head; and a fall-preventive unit for preventing the fall of said rocker arm in an axial direction of said camshaft through the contact with said rocker arm, wherein said cam holder forms an integral cam holder which integrally includes a plurality of bearing portions provided at intervals in said axial direction of said camshaft, for rotatably supporting said camshaft, and a partitioning portion disposed between adjacent bearing portions; wherein said fall-preventive unit comprises a plurality of fall-preventive units integrally provided on a respective one of said bearing portions and on said partitioning portion.