VALVE OPERATING DEVICE FOR INTERNAL COMBUSTION ENGINE

    公开(公告)号:US20170183988A1

    公开(公告)日:2017-06-29

    申请号:US15333395

    申请日:2016-10-25

    CPC classification number: F01L5/24 F01L3/08 F01L3/20 F01L5/02 F01L2810/02

    Abstract: In an engine valve, a first sliding area formed at a valve head side in an outer face of a valve stem, and sliding along a stem guide, a second sliding area formed at an opposite side from the valve head side, and sliding along the stem guide, and a first small diameter area formed between the first sliding area and the second sliding area are formed. Further, in the engine valve, a length, in an axial direction of the valve stem, of the first sliding area abutting on the stem guide at a position where the engine valve is fully opened is longer as compared with a length, in the axial direction of the valve stem, of the second sliding area abutting on the stem guide at a position where the engine valve is fully closed.

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