| 摘要 |
PROBLEM TO BE SOLVED: To provide an oil separation structure of an internal combustion engine capable of improving oil separation performance by easily separating an oil from a blow-by gas.SOLUTION: In an oil separation structure of an engine 1 in which oil separation chambers 41-44 for separating an oil from a blow-by gas are disposed on a side face 2B of a cylinder block 2 along a blow-by gas flowing direction, and the oil separation chambers 41-44 include a case portion 40 formed on the side face 2B of the cylinder block 2, and a cover member 51 for closing the case portion 40 at a position separating from the side face of the cylinder block 2, the oil separation chambers 41-44 are partitioned by partitioning walls 45A-45C disposed on the case portion 40, and partitioning walls 53-55 disposed on the cover member 51 and butted to the partitioning walls 45A-45C, and the partitioning walls 53, 55 are provided with communication holes 53a, 55a for circulating the blow-by pas among the oil separation chambers 41-44.SELECTED DRAWING: Figure 8 |
