MOTOR VEHICLE VALVEE TRAIN ADJUSTMENT DEVICE

摘要

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.

主权项

1. A motor vehicle valve train adjustment device comprising at least one camshaft (10) with at least two cam elements (12, 13, 14, 15) axially displaceably disposed thereon, at least one first cam element (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 other or others (12, 15) of the at least two cam elements (12, 13, 14, 15) each 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 a valve lift in connection with a cylinder deactivation by activation of the zero lift cams (28, 29, 30, 31) and a control unit (52) for axially displacing the at least one cam element (13, 14) between a cylinder activation and a cylinder deactivation position, in which the zero lift cams are activated and the other or others of the cam element (12, 15) between a position providing the first valve lift and a position providing for the second valve lift associated with the cylinder inactivation.