| 摘要 |
<p>An internal combustion engine has a cylinder head assembly with a camshaft (28) mounted therein and breather passages (70) through it. A guard member (38) is mounted on the head casting (12) and includes guards (40) over the cams (42), side walls (39) and a bearing ladder for the camshaft. A gasket (46) between the guard member (38) and a cover (44) forms, with the guard member (38), a separation region (50) having an inlet (72) fed by the breather passages and outlets (51) in the form of holes through the gasket (46). The gas that can flow from the breather passages to the outlets (51) is slow and substantially horizontal so that oil can separate out of the gas. The guards (40) prevent oil from the cams (42) from mixing with the breather gases.</p> |
