Lubricating structure of cylinder head

Abstract

A cylinder head lubrication structure comprising a cylinder head body (1), a camshaft front bearing cap (2), a camshaft middle bearing cap (8) and a camshaft rear bearing cap (7), a camshaft bush (4) provided inside of each bearing cap, a rocker shaft (6) mounted on the bearing caps, a valve rocker arm (12) mounted on the rocker shaft (6) by means of a valve rocker arm bushing (11), and a rocker arm roller shaft (13) mounted on the valve rocker arm (12). A lubricating oil hole (1a) is provided in the front end of the cylinder head body (1), a lubricating oil hole (1b) is provided in the rear end of the cylinder head body (1), and a lubricating oil groove (1c) is provided on the end face of the cylinder head body (1); a lubricating oil hole (2a) is provided in the camshaft front bearing cap (2), and a lubricating oil hole (7a) is provided in the camshaft rear bearing cap (2); a lubricating oil hole (4a) is provided in the camshaft bush (4); an oil inlet hole (6c) is provided in the rocker shaft (6), a lubricating oil hole (6a) is provided axially in the rocker shaft (6), and a lubricating oil hole (6b) is provided radially in the rocker shaft (6); a lubricating groove (11a) is provided circumferentially on the inner wall of the valve rocker arm bushing (11), and a lubricating oil hole (11b) is provided radially in the valve rocker arm bushing (11); a valve rocker arm lubricating oil hole (12a) is provided in the valve rocker arm (12); and a lubricating oil hole (13a) is provided in the rocker arm roller shaft (13), and a lubricating oil groove (13b) is provided circumferentially on the outer wall of the rocker arm roller shaft (13). The present cylinder head lubrication structure eliminates the need for auxiliary oil inlet tubes, is easy to assemble, is a simple structure, and reduces cost.

Description

technical field [0001] The invention relates to a lubricating structure of a cylinder head, which belongs to the technical field of engines. Background technique [0002] In the prior art, the lubrication of various lubricating parts on the engine cylinder head of the overhead cam mechanism, such as valve rocker arm, rocker arm roller mechanism, camshaft, etc., is achieved by introducing lubricating oil into each lubricating part through the auxiliary oil inlet pipe. For parts that need to be lubricated, generally the auxiliary oil inlet pipe needs to consider its fixing method and oil inlet direction, so the structure is often more complicated, and the relative cost will increase; sometimes it is also limited by the space of the cylinder head itself, and it is difficult to arrange auxiliary inlet pipes. Tubing space. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a lubricating structur...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the lubrication of various lubricating parts on the engine cylinder head of the overhead cam mechanism, such as valve rocker arm, rocker arm roller mechanism, camshaft, etc., is achieved by introducing lubricating oil into each lubricating part through the auxiliary oil inlet pipe. For parts that need to be lubricated, generally the auxiliary oil inlet pipe needs to consider its fixing method and oil inlet direction, so the structure is often more complicated, and the relative cost will increase; sometimes it is also limited by the space of the cylinder head itself, and it is difficult to arrange auxiliary inlet pipes. tubing space

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