Patent ID: 8746194
Filing Date: 2014-06-10
Classification: F01L

Abstract:
1. A valve train for actuating a plurality of gas exchange valves of an internal combustion engine, the valve train comprising: at least one camshaft configured to be driven by a crankshaft of the internal combustion engine and including a camshaft tube; at least one cam support disposed on the at least one camshaft so as to be rotationally engaged and axially displaceable with respect to the at least one camshaft, the at least one cam support including a plurality of different cam profiles having an identical base circle portion; a switching shaft disposed in the camshaft tube and configured to rotate together with the camshaft tube; a dog operatively connecting the at least one cam support to the switching shaft, the dog being configured to slide in a switching contour of the switching shaft; a displacement piece connected to the switching shaft and configured to be rotationally engaged with and axially displaceable on the camshaft tube; and an actuator operatively connected to the displacement piece and configured to actuate the displacement piece so as to rotate the switching shaft relative to the camshaft tube, wherein when the switching shaft is rotated relative to the camshaft tube the dog axially displaces the at least one cam support relative to the camshaft.