| 摘要 |
A valve cover for an internal combustion engine has a cover body of an inverted trough-like configuration and a perimetric flange surrounding its open bottom side. A seal receiving groove is formed in a bottom surface of the perimetric flange and extends more than one full circuit around the perimeter of the open side. An elongated elastomeric seal strip of a length that is greater than the circumference of the cover body, as measured within the seal receiving groove, is inserted into the seal receiving groove in a manner wherein opposite ends of the seal strip are overlapped side-by-side and wherein the bottom of the seal strip extends out of the seal receiving groove in a manner forming a sealing ridge around the bottom of the perimetric flange of the cover body. Furthermore, through the provision of O-ring seals on thread fastening bolts used for securing the cover body to an engine, in conjunction with the elastomeric seal strip, the valve cover is able to minimize the production of engine vibration related noise. Additionally, an arrangement of partition walls, ribs, and columns is utilized to distributing loading applied by a row of top mounted fastening bolts uniformly throughout the periphery of the valve cover and a pair of the partition walls are also utilized to form an isolated chamber for a breather vent connection.
|
