초록 ▼

Muffler connected to the exhaust-discharging end of an engine is positioned above the engine adjacent a fuel tank. Heat blocking cover covers top and side portions of the muffler, and a fan cover, generally in the shape of a cylinder and extending close to the engine, covers an electric-power genera

Muffler connected to the exhaust-discharging end of an engine is positioned above the engine adjacent a fuel tank. Heat blocking cover covers top and side portions of the muffler, and a fan cover, generally in the shape of a cylinder and extending close to the engine, covers an electric-power generator. Cooling fan device is provided in a cooling-air inlet portion of the fan cover for introducing cooling air from the outside to the electric-power generator covered with the fan cover. Engine-cooling air passage having a cooling-air inlet portion that faces a cooling-air outlet portion of the fan cover is provided to cool an outer surface of the engine by the cooling air flowing out through the cooling-air outlet portion of the fan cover. The engine-cooling air passage is branched upward to provide a separate muffler-cooling air passage extending between the muffler and the heat blocking cover above the engine. Thus, the cooling air introduced from the outside is allowed to cool both the engine and the muffler after having cooled the electric-power generator. With such arrangements, the engine, generator and muffler can be cooled with enhanced efficiency in a very simple manner.

대표청구항 ▼

[ What is claimed is:] [1.]1. An engine generator unit comprising:an engine;an electric-power generator to be driven by said engine, said engine and said electric-power generator being provided coaxially in a direction of an engine output shaft;a fuel tank disposed above said engine and electric-pow

[ What is claimed is:] [1.]1. An engine generator unit comprising:an engine;an electric-power generator to be driven by said engine, said engine and said electric-power generator being provided coaxially in a direction of an engine output shaft;a fuel tank disposed above said engine and electric-power generator;a muffler connected to an exhaust-discharging end of said engine and positioned above said engine adjacent said fuel tank;a heat blocking cover covering top and side portions of said muffler;a fan cover having a generally cylindrical shape, said fan cover covering said electric-power generator and extending close to said engine; anda cooling fan device disposed in a cooling-air inlet portion of said fan cover for introducing cooling air, from outside said engine generator unit, to said electric-power generator covered with said fan cover, an engine-cooling air passage having a cooling-air inlet portion that faces a cooling-air outlet portion of said fan cover being provided to cool an outer surface of said engine by the cooling air flowing out through the cooling-air outlet portion of said fan cover,said engine-cooling air passage being branched to provide a muffler-cooling air passage extending between said muffler and said heat blocking cover,whereby the cooling air is allowed to cool both said engine and said muffler after having cooled said electric-power generator.