An actuator for actuating a linearly translatable member, such as an engine
valve includes a unit trigger actuator, the unit trigger actuator having a
trigger being electrically actuatable, a hydraulic cartridge having a
selectively translatable component and being operably coupled to the
trigger for receiving actuation commands therefrom, the unit trigger
actuator being an open loop system. A pivot element is operably coupled to
the translatable component and to the engine valve, the pivot element
amplifying motion imparted to the pivot element by translatory motion of
the piston at the engine valve. A lash adjuster is operably coupled to the
pivot element for decoupling the hydraulic cartridge from lash inherent in
a plurality of components and assembly of an engine valve arrangement. A
method of actuation is further included.
