Patent ID: 8474417
Filing Date: 2013-07-02
Classification: F01M

Abstract:
1. In an air-cooled general-purpose engine comprising: a cooling fan fixed to one end portion of a crankshaft supported by an engine main body, the one end portion protruding outward from one end wall of the engine main body; and a shroud which is mounted to the engine main body, and which defines a cooling-air path between the shroud and the one end wall, the cooling-air path guiding a cooling air blown under pressure from the cooling fan, a lubricating system for the air-cooled general-purpose engine, comprising: an oil pump which pumps up an oil from an oil reservoir in a bottom portion of the engine main body; and an oil-supply path which is formed in the one end wall facing the cooling-air path and configured to guide the oil discharged from the oil pump to a valve operating chamber in a head portion of the engine main body, wherein a jet for jetting the oil is provided in an opening of the oil-supply path which is open to the valve operating chamber, the cooling fan supplies cooling air inside the cooling-air path, and an inner diameter of the jet is smaller than an inner diameter of the oil-supply path.