| 摘要 |
PROBLEM TO BE SOLVED: To uniformly cool a plurality of cylinder bore spaces.SOLUTION: At portions corresponding to cylinder bore spaces at the upper end part of a spacer body part 81, opening parts 81a, 81a and 81a are formed, and at a portion behind the spacer body part 81 in a peripheral direction thereof through at least a cooling water introducing passage at the outer peripheral surface of the spacer body part 81, a guidance projection part 87 guiding cooling water introduced from the cooling water introducing passage and flowing outside the spacer body part 81 to an opening part 81a formed at a position behind the spacer body part 81 in the peripheral direction thereof from the cooling water introducing passage, is formed. |
