Patent ID: 6502565
Filing Date: 2003-01-07
Classification: F01L,F01M

Abstract:
A reciprocating internal combustion engine including a crankcase, a cylinder head with gas exchange valves, a camshaft for actuating the gas exchange valves of the engine, said camshaft being disposed in a space, which is in communication with the crankcase of the engine so as to receive vent gases from said crankcase, and including an axially extending passage within said camshaft with at least one radial bore extending to said space surrounding said camshaft, said axially extending passage being in communication with an engine intake duct, and a disc disposed on said camshaft in the area of said radial bore and including a radial disc bore arranged in alignment with said radial camshaft bore, said disc being provided also with an axial bore formed so as to intersect said radial bore near the circumference of said radial disc, whereby vent gases entering said axial bores are accelerated in said axial bore before entering said radial bore where oil particles in the vent gases are thrown out of the disc through the radial bore while the lighter vent gas components flow inwardly through the radial bore to the axial crankshaft bore and to the engine intake duct.