| 摘要 |
PROBLEM TO BE SOLVED: To reduce the stress on a mounting portion due to vibration during high rotation and to improve the strength of the mounting portion. SOLUTION: In the structure of an oil pump in which an oil pump case communicating with a strainer having a suction part and a pipe part for oil is mounted on a crank lower case, and a pipe part is disposed in the longitudinal direction of the crank lower case, the pipe part consists of a pipe part on the case side where the pipe part is formed integrally with the oil pump case and a pipe part on the suction opening side connected to a suction part. The pipe part on the case side is disposed in the longitudinal direction of the crank lower case.
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