F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent
F - Mech Eng,Light,Heat,Weapons
16
J
277/28, 230/84
F16J 9/00 (2006.01) F04B 39/04 (2006.01) F16J 9/08 (2006.01) F16J 9/22 (2006.01)
Patent
CA 2004502
For carrying out lubrication between a piston (17) and a piston ring (21) installed in an annular groove (23) of the piston, the piston ring comprises a recessed portion (15a, 15b) which is partially recessed from an upper axial end (27) of the piston ring. Lubricating oil is mixed with blow-by gas and flows into the annular groove through the recessed portion. As a result, the lubricating oil is effectively supplied to the annular groove. therefore, the lubrication is favorably carried out between the piston ring and the piston. The piston ring may be formed from a piston ring member (10) of a ring-shaped plate which has the recessed portion on an outer peripheral surface (13) thereof.
En vue d'assurer une lubrification entre un piston (17) et un segment de piston (21) installé dans une gorge circulaire (23) du piston, le segment de piston comprend une partie en retrait (15a, 15b) qui est située partiellement en retrait depuis une extrémité axiale supérieure (27) du segment. L'huile lubrifiante est mélangée avec le gaz perdu et s'écoule dans la gorge circulaire par la partie en retrait. L'huile lubrifiante est ainsi amenée à la gorge circulaire de manière efficace, permettant la lubrification entre le segment de piston et le piston. Le segment de piston peut être formé d'un élément de segment (10) d'une plaque en forme d'anneau ayant la partie en retrait sur une surface périphérique extérieure (13).
Azami Katsumasa
Takahashi Takeo
Sanden Corporation
Sim & Mcburney
LandOfFree
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