ENGINE CAMSHAFT THRUSTING STRUCTURE

摘要

An engine camshaft thrusting structure. A camshaft (1) is arranged on an engine block (2). A gear (3) is arranged on an outer end of the camshaft (1). An annular groove (3a) is provided on the periphery of the gear (3) close to the engine block (2). A thrust plate (4) is fixed on the engine block (2). Arranged on the thrust plate (4) is a positioning nosing (4a) for snapping into the annular ring (3a). The camshaft thrusting structure allows for reduced overall diameter of the camshaft, thus allowing for reduced blank size, and for reduced manufacturing difficulty. While at the same time, because an annular protrusion of the camshaft is obviated, the space for the thickness of the thrust plate is conserved, this allows for reduced distance between an end face of the camshaft and the engine block, thus for reduced size of the entire engine.