| 摘要 |
PURPOSE:To enable lubricating oil in an oil pan to be easily further surely cooled, by providing a cooling water chamber being brought into contact with a peripheral wall of the oil pan and opening an inlet hole of said cooling water chamber to a case wall in an underwater immersed part toward the advance direction of a ship body. CONSTITUTION:A driving unit case 1 mounts to its upper part an engine 5 through an engine mount 4. And said case 1 forms in its upper case 2 an oil pan 7 of the engine 5 in the front side of an exhaust and drain passage 20. Here a cavity part, brought into contact with the side of a front wall 8 of the oil pan 7, is partitioned by a partitioning member 15 in a position in the vicinity of an upper end part, forming the upper halved part to a cooling water chamber 16 brought into contact with a front wall 9 of the oil pan 7. And the cooling water chamber 16 forms in its bottom end part an inlet hole 18, opening in the advance direction of a ship body further tilting downward toward the front by an angle alpha, in the front wall part of a lower case 3 immersed in the seawater. |
