Valve actuation system comprising finger follower for lobe switching and single source lost motion

A valve actuation system for use in an internal combustion engine valvetrain, the valve actuation system comprising:

• a first valve actuation motion source;
• and
• a finger follower assembly, comprising:
• a follower body having a pivot end and a motion transmitting end;
• a lever adapted to pivot relative to the follower body;
• a motion receiving component having a motion receiving surface disposed between the pivot end and the motion transmitting end, wherein the motion receiving surface is operatively connected to the first valve actuation motion source;
• and
• an adjustable support assembly including a movable latch configured to provide selective support to the lever, the adjustable support assembly adapted to alternately maintain the latch in a first latch position and a second latch position relative to the follower body wherein the adjustable support assembly further includes an actuating piston extending within a piston receiving bore in the latch and cooperating with the latch so as to define the first latch position and the second latch position,
• wherein the first valve actuation motion source is configured to provide main event valve actuation motions, auxiliary valve actuation motions, zero-lift valve actuation motions or a combination thereof.