Variable valve device for engine
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United States of America Patent
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Oct 29, 2019
Grant Date -
Jun 13, 2019
app pub date -
Jun 6, 2018
filing date -
Dec 12, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A variable valve device for an engine, may include a camshaft; a movable cam device fitted over the camshaft to be slidable in an axial direction of the camshaft, and configured such that cams with at least two different cam profiles and a guide protruding portion are disposed along the axial direction of the camshaft; at least one shaft groove linearly processed to have a predetermined cross-sectional shape in an external circumferential surface of the camshaft along the axial direction thereof; a cam groove provided in an internal circumferential surface of the movable cam device to communicate with the shaft groove; and an insertion member inserted into a communication space defined by the shaft groove and the cam groove such that a rotational displacement of the camshaft is transmitted to the movable cam device.
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