| 摘要 |
PROBLEM TO BE SOLVED: To prevent steam and cooling water becoming boiling water from suddenly jumping outside from a cooling water replenishing port arranged on a cooling water tank upper surface, by surely securing an outlet of the steam, when expanding since the cooling water in a cooling water tank boils. SOLUTION: In this engine, the cooling water tank 1 is arranged above a cylinder or a crank case. A cooling water replenishing port body 2 is arranged on the upper surface of the cooling water tank 1. A water passage 4 and a steam passage 3 are formed in the replenishing port body 2. COPYRIGHT: (C)2006,JPO&NCIPI
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