Patent ID: 8939119
Filing Date: 2015-01-27
Classification: F01L

Abstract:
1. A camshaft adjuster ( 3 ), comprising a camshaft axis of rotation (D) and an electromagnetic multi-tappet actuating device ( 4 ) having at least two electromagnetic drive units, which for exerting an actuating force on a corresponding number of elongated tappet units ( 9 , 10 , 11 ) which are mounted axially parallel to one another, each defining a tappet longitudinal centre axis (A 1 , A 2 , A 3 ) arranged perpendicularly to the camshaft axis of rotation (D) are activatable, in order to engage with the elongated tappet units ( 9 , 10 , 11 ) in shifting grooves ( 8 ) of an adjustable cam piece ( 7 ), wherein the drive units each on a facing acting end on one of the associated elongated tappet units ( 9 , 10 , 11 ) form an acting surface that is moveable in an actuating direction of the electromagnetic drive units and an end face on the acting side facing away from the respective associated shifting groove ( 8 ) of a respective one of the elongated tappet units ( 9 , 10 , 11 ) interacts with the acting surface, wherein at least one of the elongated tappet units (