Four-stroke-cycle engine of an outboard motor

Abstract

A four-stroke-cycle engine of an outboard motor, comprises an engine body, a crankshaft, at least one camshaft, at least one camshaft driving mechanism, an oil pump, at least one valve timing adjusting mechanism and at least one valve timing controlling mechanism. The crankshaft and the camshaft are disposed in an upright state in the engine body. The camshaft driving mechanism transmits a rotational motion of the crankshaft to the camshaft. The camshaft driving mechanism is disposed on a lower side of an engine body. The oil pump for lubrication is disposed on the lower side of the engine body. Oil is supplied from the oil pump to the valve timing controlling mechanism to control the valve timing adjusting mechanism. The valve timing controlling mechanism is disposed on a lower side of an outer wall of a valve train chamber in which the camshaft is received.

Dependencies are inferred from the claim text.