Patent ID: 6763790
Filing Date: 2004-07-20
Classification: F01L

Abstract:
A camless valve actuator assembly for actuating an engine valve, comprising:an electrohydraulic actuator obtaining no external mechanical input and having a piston being translatable responsive to an actuating fluid bearing on a piston surface, the piston surface being in fluid communication with an actuator valve, the actuator valve being in selective fluid communication with a source of actuating fluid under pressure, the actuator valve being shiftable to selectively port and vent actuating fluid to and from the piston surface; and a rocker arm being rotatable about a hinge point, a first arm portion extending from the hinge point to a proximal end and a second arm portion extending from the hinge point to a distal end, the proximal end being operably coupled to the piston and the distal end being operably coupled to the valve, the first arm portion being shorter than the second arm portion, the piston generating a lineal translation that is imparted to the rocker and proximal end for imparting substantially all of an opening activation to the valve.