Electrically rotatable shaft
AssigneeINA-Schaeffler KG
InventorUlrich Grau
Life of this patent
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Abstract
The invention concerns an electrically rotatable shaft, and more particularly, an adjusting shaft (1) of a fully variable mechanical valve train of an internal combustion engine, said shaft comprising an adjusting cam (2). The low-friction and lash-free configuration of a drive required for a rapid and exact functioning of the fully variable mechanical valve train is achieved by the fact that the adjusting shaft (1) is rotated by an actuator (3) that comprises an adjusting lever (4) connected rotationally fast to the adjusting shaft (1), while the free end of the adjusting lever is articulated preferably on the screw nut (10) of a screw-and-nut drive (5) that is driven by an electromotor (6).
Claims9
An electrically rotatable adjusting shaft of a fully adjusting shaft of a fully variable mechanical valve train of an internal combustion engine, said shaft comprising an adjusting cam, wherein an actuator that rotates the adjusting shaft comprises an adjusting lever that is connected rotationally fast to the adjusting shaft, and a free end of the adjusting lever is articulated on a screw nut of a screw-and-nut drive that is driven by an electromotor, the free end of the adjusting lever comprises two fork branches that surround the screw nut with clearance.
Dependencies are inferred from the claim text.