| 摘要 |
PROBLEM TO BE SOLVED: To more securely prevent mixing of air with oil supplied to an HLA. SOLUTION: In an engine having a bearing of a camshaft formed by a lower bearing forming member and an upper bearing forming member, a distribution oil passage groove forming a distribution oil passage extended to a cylinder row direction is provided on a mating surface of the upper bearing forming member with the lower bearing forming member. First branch oil passages branched from the distribution oil passage to supply oil to the HLA are provided on the lower bearing forming member and a cylinder head, and a second branch oil passage groove for forming a second branch oil passage branched from the distribution oil passage to guide oil to the bearing is provided on the mating face of the upper bearing forming member with the lower bearing forming member. The bottom part of the second branch oil passage groove is inclined upwardly from the bottom part of the distribution oil passage groove of the upper bearing forming member toward the bearing. COPYRIGHT: (C)2009,JPO&INPIT
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