| 摘要 |
<p>A valve train for an overhead camshaft type engine includes a finger follower lever type rocker arm assembly. The lever (28) is of lightweight stamped construction containing a pocket or recess (38) in which is received a precision moulded plastic bearing cup (40). The cup (40) has a smoothly polished bearing surface for slidably receiving an axleless roller (44) that is contained laterally within the insert and is rotated by the engine driven cam (12) located above the roller (44) for pivotally moving the lever (28) to actuate the engine valves. The inclusion of the pocket (38) in the lever (28) assures lubrication of the parts at all times since it will collect and retain lubricant or engine oil during engine operation so that even during a lengthy shutdown, upon restart, the elements will be fully lubricated. <IMAGE></p> |
