| 摘要 |
In an engine (internal combustion engine) (100), a crankcase (12) is provided with a fastening area (120d) that surrounds the opening (12b) and contacts the oil pan (13), a balance shaft housing (33) is disposed in the crankcase (12) to surround the opening (12b), and four housing side fastening sections (12a) are provided to the crankcase (12) to fasten the crankcase (12) and the balance shaft housing (33). The fastening section (12a) of the four housing side fastening sections (12a) in a first axial direction side of a balance shaft is disposed on the inside of the fastening area (120d), and the fastening section (12a) of the four housing side fastening sections (12a) in a second axial direction side of the balance shaft is disposed on the outside of the fastening area (120d). |
