Systems and methods of actuating engine valves using a hydraulic valve
actuation system are disclosed. The valve actuation system includes a
master piston and two slave pistons slidably disposed in bores provided
in a housing. The master piston and two slave pistons are connected
together by a hydraulic circuit. Linear motion imparted to the master
piston is transferred to the two slave pistons via the hydraulic circuit.
In turn, the two slave pistons may actuate one or more engine valves
directly or through an intermediate valve bridge. A valve seating device
may be provided to assist in seating the engine valves in embodiments
where the valve actuation system is adapted to provide variable valve
actuation.