Unit trigger actuator

An actuator for actuating an engine valve, comprising:

• a trigger being electrically actuatable;
• a hydraulic actuation cartridge being operably coupled to the trigger having a translatable component being translatable responsive to a trigger input;
• a pivot element operably coupled to the cartridge and to the engine valve, the pivot element amplifying motion imparted to the pivot element by translatory motion of the translatable component at the engine valve;
• and
• a lash adjuster operably coupled to the pivot element for decoupling the hydraulic actuation cartridge from lash inherent in a plurality of components and assembly of an engine valve arrangement.

An actuator for actuating an engine valve, comprising:

• 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 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;
• and
• a lash adjuster 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 actuating an engine valve, comprising:

• electrically actuating a unit trigger;
• a hydraulic cartridge having a selectively translatable component and being operably coupling a hydraulic cartridge to the trigger for receiving actuation commands therefrom;
• selectively translating a hydraulic cartridge component;
• operating the unit trigger actuator in an open loop mode;
• operably coupling a pivot element 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;
• and
• decoupling the hydraulic cartridge from lash inherent in a plurality of components and assembly of an engine valve arrangement.

A method of actuating a linearly translatable member to move between a rest position and a translated position, comprising:

• electrically actuating a unit trigger;
• a hydraulic cartridge having a selectively translatable component and being operably coupling a hydraulic cartridge to the trigger for receiving actuation commands therefrom;
• selectively translating a hydraulic cartridge component;
• operating the unit trigger actuator in an open loop mode;
• operably coupling a pivot element to the translatable component and to the linearly translatable member;
• the pivot element amplifying motion imparted to the pivot element by translatory motion of the piston at the linearly translatable member;
• and
• decoupling the hydraulic cartridge from lash inherent in a plurality of components and assembly of a linearly translation arrangement.