Valve drive for an internal combustion engine having a valve which is
axially displaceable between an open position and a closed position and
is prestressed by a locking spring in the direction of its closed
position, in which a control shaft driven by an electric motor to pivot
about a longitudinal axis, has a cam, provided for operating the valve a
pressure element that can be pivoted about a pivot axis, and a spring
element which prestresses the pressure element and exerts a torque on the
control shaft via the pressure element. The mass moment of inertia of the
pressure element relative to its pivot axis is greater than the mass
moment of inertia of the control shaft and the cam relative to the
longitudinal axis of the control shaft. The valve drive so configured
provides greater electrical operating efficiency and permits valve
actuation to be performed at lower electric motor rotation speeds.