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US 8,474,424 B2Granted
Valve drive train device
AssigneeDaimler AG
InventorsJens Meintschel, Thomas Stolk, Alexander von Gaisberg-Helfenberg
Life of this patent
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Abstract
In a valve drive train device, particularly of an internal combustion engine, having an actuating device provided to displace at least one first axially displaceable cam element using a shifting gate, the actuating device is designed for switching the axially displaceable first cam element into the various switching positions.
Claims9
A valve drive train device, of an internal combustion engine including a camshaft (35a) with at least one axially displaceable first cam element (11a, 11b) having axially overlapping movable first and second cam element sections (11a, 12a;
- 11b, 12b) provided with a shift gate (13a,13b) for sequentially displacing the first cam element section (11a, 11b) and the second cam element section (12a, 12b) on the camshaft (35a), and an actuating device (10a, 10b) for displacing the axially displaceable cam element sections (11a, 12a;
- 11b, 12b) by means of the shift gate (13a;
- 13b) to at least three switching positions, the shift gate (13a;
- 13b) having at least two gate tracks (36a, 37a;
- 36b, 37b), each including four switch segments (14a-21a;
- 14b-21b) and the switch segments being assigned to a gate track (36a, 37a:36b,37b) of a switching direction, the gate tracks (36a, 37a;
- 36b, 37b) extending over a rotational angle in excess of 360° and being arranged in each case partially on the first cam element section (11a;
- 11b) and partially on the second cam element section (12a, 12b).
5 more elements
Dependencies are inferred from the claim text.