A valvetrain for an internal combustion engine, comprising:
- a camshaft (12) that is rotatable in a direction of rotation around an axis of rotation (14);
- a first cam piece (18) and a second cam piece (20) disposed on the camshaft (12) which each have at least two cams (22, 24) for actuating a respective gas exchange valve and which are rotationally fixedly connected to the camshaft (12);
- and
- an actuator (26), wherein the first and second cam pieces are shiftable in an axial direction of the camshaft relative to the camshaft by the actuator;
- wherein the first cam piece (18) has a first rib (30) protruding outwardly from a first base body (28) of the first cam piece (18) in a radial direction (32) of the camshaft (12) and wherein the first rib extends along the direction of rotation in a first angle region of the first cam piece (18);
- wherein the second cam piece (20) has a second rib (36) protruding outwardly from a second base body (34) of the second cam piece (20) in the radial direction (32) of the camshaft (12) and wherein the second rib extends in the direction of rotation in a second angle region, attached to the first angle region, of the second cam piece (20);
- wherein the actuator (26) is coupled to the first cam piece (18) via the first rib (30) during a first part of a rotation of the camshaft (12) and is decoupled from the second cam piece (20) such that the first cam piece (18) is shiftable via the first rib (30) by the actuator (26) while a shifting of the second cam piece (20) caused by the actuator (26) ceases;
- and
- wherein the actuator (26) is coupled to the second cam piece (20) via the second rib (36) during a second part, following the first part, of the rotation of the camshaft (12) and is decoupled from the first cam piece (18) such that the second cam piece (20) is shiftable via the second rib (36) by the actuator (26) while a shifting of the first cam piece (18) caused by the actuator (26) ceases.