| 摘要 |
PROBLEM TO BE SOLVED: To improve the lubricating performance of a camshaft and a bearing surface of the camshaft, and to eliminate the abnormal abrasion of a tappet, in a lubricating device of a valve train for a vehicle.SOLUTION: A lubricating oil passage 51 in a cylinder head 3 is formed with an upstream side lubricating oil passage 53 extending up to the upper end vicinity of a cam cap 13 by inclining the axis so that the downstream side is positioned at a vehicle upper part with respect to the upstream side from a lubricating oil introducing port 52, and downstream side lubricating oil passages 54 extending to the lower end vicinity of the cam cap 13 by bending the axis toward a vehicle lower part from a downstream end of the upstream side lubricating oil passage 53. Lubricating oil injection ports 55 formed at downstream ends of the downstream side lubricating oil passages 54 are formed in positions opposed to cam lobes 16, and formed at upper sides of tappets 32 so as to be overlapped in the vertical direction with the tappets 32. |
