| 摘要 |
PROBLEM TO BE SOLVED: To provide an engine cooling device effectively using a cylinder head bolt boss. SOLUTION: In the engine cooling device, an inner side passage 47 and an outer side passage 48 are formed such that cooling water from an introducing chamber 44a surrounded by a rear opposing part 39b and a one end side opposing part 39r of an outer peripheral longitudinal wall 39, an intake port forming wall 45 and the head bolt boss 46 flows in both sides of the head bolt boss 46. COPYRIGHT: (C)2005,JPO&NCIPI
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