Patent ID: 6098582
Filing Date: 2000-08-08
Classification: F01L,F02B

Abstract:
A four-stroke cycle OHC type internal combustion engine, comprising:a rotatable crankshaft;a camshaft;a gear train for transmitting the rotation of said crankshaft to said camshaft; anda housing block, said housing block including a cylinder portion, said gear train being disposed in a longitudinal direction along said cylinder portion, said housing block further including a bearing portion for supporting said crankshaft, an upper outer wall portion extending vertically downward from said cylinder portion to said bearing portion and a longitudinally oriented gear case for housing said gear train;wherein said housing block is divided into a cylinder block main body part and a cylinder block lower part at said bearing portion of said crankshaft, said cylinder block main body part being formed in one piece including said cylinder portion, upper outer wall portion and gear case.