Variable valve device
AssigneeSuzuki Motor Corporation
InventorHisashi Ozeki
Life of this patent
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Abstract
There is provided a variable valve device provided in a cylinder head and capable of changing a valve lift amount, including: a camshaft on which a plurality of cams with different valve lift amounts are formed; a switching mechanism configured to switch a cam for moving a valve among the plurality of cams; and an oil control valve configured to control an oil pressure for the switching mechanism. Oil starts to be supplied from the oil control valve to the switching mechanism at an end timing of a valve lift or in a zero range in which no valve lift occurs.
Claims9
A variable valve device provided in a cylinder head and capable of changing a valve lift amount, comprising:
- a camshaft on which a plurality of cams with different valve lift amounts are formed;
- a switching mechanism configured to switch a cam for moving a valve among the plurality of cams;
- and
- an oil control valve configured to control an oil pressure for the switching mechanism;
- and
- an oil groove is formed in a part of an outer circumferential surface of the camshaft such that oil starts to be supplied from the oil control valve to the switching mechanism at an end timing of a valve lift or in a zero range in which no valve lift occurs.
Dependencies are inferred from the claim text.