| 摘要 |
A crankcase gas density reduction device for increasing the engine output is provided that the oil content of the gas is decreased and the oil particle in which the specific gravity is relatively big is separated. A crankcase gas density reduction device for increasing the engine output comprises a centrifugal particle separator(20) which is installed at a ventilation path(10) that is formed in an engine block (B) between a pair of cylinders(C1,C2). The centrifugal particle separator separates an oil particle included in the gas. The centrifugal particle separator includes a ring type dust collecting tank(22) which is prepared in the upper circumference of a pair of propellers(21), and separating ring(23) which induces the oil separated with the centrifugal force towards the collection chamber.
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