| 摘要 |
PURPOSE:To prevent a cylinder liner and the like effectively from corrosion by providing a nonreturn valve and an air-liquid separator to a circulation passage of cooling water to cool a cylinder liner and the like, and a vane pump and an amplitude helper to a bypass bypassing the nonreturn valve. CONSTITUTION:A cooling pipe 3 is arranged inside a tank 1 storing cooling water for cooling the engine cooling water returned from a part 14c of a circulation pipe 14. A part 14a of the circulation pipe 14 is connected to a cylinder liner for cooling it. At this stage, the circulation pipe 14 connected to the bottom of the tank 1 via a valve 15 is connected to a point between pipes 14a and 14b via nonreturn valve 18, an air-liquid separator 19 and so on, while a bypass 24 provided to bypass the nonreturen valve 18 is equipped with a vane pump 27 and an amplitude helper 28. The amplitude helper 28 is constructed by providing pole pieces 31 and 32 along the water stream, and intended to promote the formation of anticorrosive coating by giving electricity. |
