CAMSHAFT FOR INTERNAL COMBUSTION ENGINE
    2.
    发明申请

    公开(公告)号:US20180202325A1

    公开(公告)日:2018-07-19

    申请号:US15826322

    申请日:2017-11-29

    Inventor: Kensuke MORI

    Abstract: In a camshaft for an internal combustion engine, integrally including: a shaft main portion that extends linearly; a plurality of valve-actuating cams disposed to be spaced apart from each other in an axial direction of the shaft main portion; and a pair of support arms extending along one diametric line of the shaft main portion radially outwardly from one end part of the shaft main portion and being fitted with a follower rotational body, a pair of overhangs are integrated with the shaft main portion and the pair of support arms, the overhangs extending between the support arms in a peripheral direction of the shaft main portion, and a thick-wall portion having a larger thickness in a direction along an axis of the shaft main portion is formed in part, on a radially outer side of the shaft main portion, of each of the overhangs.

    Direct-acting valve lifter of internal combustion engine

    公开(公告)号:US09657606B2

    公开(公告)日:2017-05-23

    申请号:US14631162

    申请日:2015-02-25

    Inventor: Makoto Yasuike

    Abstract: A valve lifter with a variable lift mechanism is required to be deployed at a predetermined angle with respect to a cam unit, and the present invention is intended to achieve this requirement with a simple configuration without too much processing such as a fitting of the conventional longitudinal groove and a pin.A cam sliding contact surface of a valve lifter on which a high lift cam and a low lift cam slides is formed to be a smooth inclined surface and a cam slide starting point is lower than a cam slide terminating point, thereby establishing an elevation difference between the cam slide starting point and the cam slide terminating point. As a result, since the high lift cam and the low lift cam always move uphill on the cam sliding contact surface, namely, from the low cam slide starting point toward the high cam terminating point along the slope of the cam sliding contact surface, the valve lifter is not subjected to a force around the reciprocating axis from the cam and therefore, the direction of the valve lifter is maintained constant.

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