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AssigneeDaimer AG
InventorsMatthias Eppinger, Kai Lehmann, Marc Maronde, Bernd Neubauer, Tilmann Roemheld, Thomas Stolk, Alexander Von Gaisberg-Helfenberg
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In a motor vehicle valve train adjustment device comprising at least one camshaft with at least two axially displaceable cam elements wherein at least one cam element has a cam track with a valve lift and a cam track with zero valve lift for a deactivation of at least one cylinder, and at least one other cam element of the at least two axially displaceable cam elements has a cam track with a first valve lift and a cam track with a second valve lift by which a cylinder which remains fueled during a partial cylinder deactivation is adapted to the at least one cylinder deactivation by special valve lift characteristics.
A motor vehicle valve train adjustment device comprising at least one camshaft (10) with first and second cam elements (12, 13, 14, 15) axially displaceably disposed thereon, the first cam elements (13, 14) having a cam track (20, 21, 22, 23) with a first valve lift and an adjacent cam track (28, 29, 30, 31) with zero cam lift for cylinder deactivation and the second cam elements (12, 15) having a cam track (36, 37, 38, 39) with the first valve lift and a cam track (44, 45, 46, 47) with a second valve lift designed for operation in connection with a cylinder deactivation by activation of the zero lift cams (28, 29, 30, 31) of the first cam elements (13, 14), and a control unit (52) for axially displacing the first cam elements (13, 14) between an all cylinder activation and a partial cylinder deactivation position, in which the zero lift cams are activated and the second cam element (12, 15) are moved to a position providing for the second valve lift associated with the partial cylinder inactivation providing for a continuing engine power generation by increased power output of the remaining active cylinders.
Dependencies are inferred from the claim text.