Oil-sealing valve guide insert and method of manufacture

Details Oil-sealing valve guide insert and method of manufacture Oil-sealing valve guide insert and method of manufacture

F - Mech Eng,Light,Heat,Weapons

01

L

26/154, 123/188

F01L 3/00 (2006.01) F01L 3/08 (2006.01)

Patent

CA 1327494

OIL-SEALING VALVE GUIDE INSERT AND METHOD OF MANUFACTURE ABSTRACT OF THE DISCLOSURE A slitted tubular valve guide is provided with substantially spirally arranged oil retaining groove segments along its entire length. At each point of intersection between the spiral groove and the slit, the ends of the groove segments immediately adjacent the slit are offset by an amount sufficient to create a discontinuity in the groove. There are, therefore, a number of inclined, decoupled groove segments incapable of flowing lubricating oil along their linear extent to the combustion chamber. The tubular valve guide is rolled from stock having inclined parallel groove segments preformed in the surface.

537845

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