| 摘要 |
It is an object of the invention to improve a cooling efficiency for cooling an engine generator by dividing a cooling air passage into two routes. The engine generator includes an engine (2), a generator (3), a muffler (4) and a cooling fan (5), which are all enclosed in a housing. A first cooling air passage 36 is formed adjacent to a cylinder (2a) of the engine (2). A second cooling air passage (37) is formed beneath the engine (2), extending from the lower side of the cooling fan (5), passing through an area below the engine (2) and arriving at the muffler (4). The second cooling air passage (37) is formed between an oil pan (7) and a vibration isolation support base plate (6), with the oil pan (7) facing the second cooling air passage (37). In this way, an air supplied from the cooling fan (5) is divided into two routes, with one cooling the cylinder head (2a) of the engine (2) and the other the lower portion of the engine (2) and the muffler (4). When the second cooling passage (37) is partially formed by the vibration isolation support base plate (6), a longer span can be obtained by the vibration isolation support base plate. Therefore, a vibration isolation member is provided on each end of the vibration isolation support base plate for effectively reducing the engine vibration. <IMAGE>
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