BREATHER DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a breather device capable of both attaining space saving and high oil separating characteristic. SOLUTION: This breather device 10 has a substantially vertically extending first oil separation chamber 20 provided on a vertical wall 9 which forms part of the outer wall of an internal combustion engine 1 in which blow-by gas G flows, and a second oil separation chamber 30 provided so as to overlap with the first oil separation chamber 20. The lower part of the first oil separation chamber 20 is opened to the inside of the vertical wall, so that the second oil separation chamber 30 communicates with the first oil separation chamber 20 in the upper part and discharges the blow-by gas from the lower side through the communication part. According to such a structure, the oil separation performance is comprehensively enhanced by the flowing characteristics of the blow-by gas differed between the separation chambers 20 and 30 while ensuring oil separation chambers of large capacity in a saved space. COPYRIGHT: (C)2004,JPO