Patent ID: 8763567
Filing Date: 2014-07-01
Classification: F01P,F02B

Abstract:
1. An engine for a portable working machine, comprising: a crankshaft to which the working machine is coupled; an air-cooling fan having impeller blades and coupled to one end side of the crankshaft; a fan casing enclosing the air-cooling fan; and a bottom cover located in a bottom surface side of the engine and connected to the fan casing, wherein air suction ports and guide parts are provided in one side of the bottom cover, the air suction ports sucking in air supplied from the air-cooling fan, the guide parts extending from the air suction ports to the impeller blades of the air-cooling fan, and the guide parts comprising at least one guide plate extending from an edge of one of the air suction ports in a direction obliquely upwards towards an outer periphery of the air-cooling fan.