Patent ID: 6691831
Filing Date: 2004-02-17
Classification: F01M

Abstract:
A splashing oil lubrication engine having a crankcase including a bottom section, side wall sections and a ceiling section, a crankshaft, a crank chamber enclosed by the crankcase, an engine oil, stored in the crankcase, and an oil splashing means for splashing the engine oil in the crank chamber in a radial direction of the crankshaft and for forming a flow of splashing oil around the crankshaft; comprising:a plurality of heat receiving fins projected inwardly from inner wall surfaces of said bottom section, at least one of said side wall sections, and said ceiling section of said crankcase, all sections of which form a surface parallel to said crankshaft, to absorb heat of said engine oil in said crank chamber, said fins being spaced away from said bearing housings provided around the crankshaft.