| 摘要 |
An improved lubrication arrangement for an internal combustion engine of the push tube (59) type. A carrier structure (43) is fixed relative to an upper surface of the cylinder head (31) and includes a fixed fulcrum location (49) for each rocker arm (51). The carrier structure (43) defines a lubrication passage (67,69) providing lubrication fluid to the fixed fulcrum location (49). The engine block (11) and the cylinder head (31) cooperate to define a fluid chamber (81) surrounding the push tube (59). Lubrication fluid flows out adjacent the fixed fulcrum location (49) and flows under the influence of gravity into the fluid chamber (81). The push tube defines a plurality of openings (83) whereby lubrication fluid flows from the fluid chamber (81) into the interior (85) of the push tube. The push tube and a lash compensation device (27) cooperate to define a fluid passage (87) permitting lubrication fluid to flow from the interior of the push tube into a fluid reservoir (29) defined by the lash compensation device. The described arrangement reduces the need for expensive gun drilling of fluid passages in the engine block and in a rocker shaft, which is replaced in the invention by the carrier structure.
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