| 摘要 |
An oil separator is configured in which high oil collecting performance is maintained even when negative pressure acts on a blow-by gas circulation part. Oil discharge ports (31A) for discharging oil collected from oil mist downward are formed in a bottom part (31) of the blow-by gas circulation part through which blow-by gas flows. Concave parts (T) are formed in wall parts (30T) facing the oil discharge ports, the concave parts (T) suppressing the diffusion of airflow along the wall parts when air flows upward from the oil discharge ports due to the effect of negative pressure. |
