Electrically rotatable shaft
AssigneeINA-Schaeffler KG
InventorUlrich Grau
Life of this patent
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Abstract
The invention concerns an electrically rotatable adjusting shaft (1) of a fully variable mechanical valve train of an internal combustion engine, said adjusting shaft comprising an adjusting cam. A rapid and exact rotation of the adjusting shaft (1) and the load regulation of the internal combustion engine depending thereon is achieved by the fact that an actuator (3) for rotating the adjusting shaft (1) comprises an adjusting lever (4) that is connected rotationally fast to the adjusting shaft (1), and the free end of the adjusting lever (4) can be loaded by a cam plate (6) that is driven by an electromotor (7).
Claims10
An electrically rotatable adjusting shaft of a fully variable mechanical valve train of an internal combustion engine, said shaft comprising an adjusting cam, wherein an actuator for rotating the adjusting shaft comprises an adjusting lever that is connected rotationally fast to the adjusting shaft, and a free end of the adjusting lever can be loaded by a cam plate that is driven by an electromotor.
An electrically driven adjusting shaft of claim 6, wherein the cam plate is made in one piece with one of an electromotor shaft and a gearbox output shaft.
An electrically driven adjusting shaft of claim 7, wherein the actuator comprises a fixed bearing and a movable bearing.
An electrically driven adjusting shaft of claim 8, wherein the fixed bearing is configured as one of a deep groove ball bearing, an angular contact ball bearing and a four point bearing, while the movable bearing is configured as a needle roller bearing.
Dependencies are inferred from the claim text.