Cam element for a valve drive train device
AssigneeDaimler AG
InventorsMichael KUJAS, Thomas STOLK, Alexander VON GAISBERG-HELFENBERG
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AssigneeDaimler AG
InventorsMichael KUJAS, Thomas STOLK, Alexander VON GAISBERG-HELFENBERG
Estimating the term…
In a cam element for a valve drive train device of an internal combustion engine having at least one cam comprising at least two partial cams which are arranged next to one another and have a shared base circle phase in at least one angular camshaft range for valve lift switching by displacing their axial position with respect to a cam follower from one of the partial cams to another of the partial cams, the partial cams are angularly displaced in an axially overlapping arrangement. Also, between adjacent partial cams, a circular undercut is formed which has a center that is slightly offset from the rotational axis of the cam element so as to facilitate a switch over of valve actuation from one to another of the adjacent partial cams.
A cam element (17) for a valve drive train device of an internal combustion engine having at least one cam (10) that comprises at least two partial cams (11, 12) which are situated next to one another and have a shared base circle phase in at least one camshaft angular range (13) provided for valve lift switching by displacing their axial position with respect to a cam follower from one of the partial cams (11, 12) to another of the partial cams (11, 12), the partial cams (11, 12) being disposed on the cam element (17) in an angularly-displaced, axially overlapping arrangement.
A method for manufacturing a cam element (17) for a valve drive train device of an internal combustion engine, the cam element having at least one cam (10) that has at least two partial cams (11, 12) which are situated next to one another and have a shared base circle phase in at least one camshaft angular range (13) provided for valve lift switching by displacing their axial position with respect to a cam follower from one of the partial cams (11, 12) to another of the partial cams (11, 12), said method comprising the step of forming a circular undercut (14) between the two partial cams (11, 12), which undercut has a center that is slightly offset from the axis of rotation of the camshaft.
Dependencies are inferred from the claim text.