| 摘要 |
<p>There is provided a balance shaft housing (an upper housing 14U and a lower housing 14L) disposed in an oil pan (7) for accommodating balance shafts (13L, 13R) provided with counterweights (19) for canceling out a vibromotive force caused by pistons, characterized in that an intake passage (an intake pipe 32) of a pump (27) for taking in lubricating oil within the oil pan is formed integrally with the housing, and that an oil strainer attaching portion (34) is formed integrally with a bearing wall (a first bearing wall 26) for supporting the balance shafts. According to this construction, since the thickness of the oil strainer attaching portion helps enhance the rigidity of the bearing wall supporting the balance shafts, the enhancement in rigidity of the housing can be attained without increasing the thickness of the housing only for securing a required rigidity. <IMAGE></p> |
