| 摘要 |
An oil communication passage (39b) is formed so as to run through a wall portion (39) separating an oil collector (41) and an oil drop hole (38) formed in an engine cylinder head (14), and oil that has collected in the oil collector (41) can therefore be guided to the oil drop hole (38) via the oil communication passage (39b). An oil supply passage (39c) and a retaining hole (39a) for retaining a hydraulic tappet (22), which is operated by oil supplied from the oil supply passage (39c), are formed in the wall portion (39) of the cylinder head (14), and the oil supply passage (39c) and the oil communication passage (39b) communicate with each other via the retaining hole (39a); therefore, even if part of the oil supplied from the oil supply passage (39c) to the hydraulic tappet (22) leaks into the retaining hole (39a), the oil can be discharged by utilizing the oil communication passage (39b). |
