Systems and methods for providing partial bleeder braking engine valve
actuation are disclosed. In an embodiment of the present invention, a cam
may be provided with a main exhaust lobe, a partial bleeder lobe and an
inner base circle portion between the two lobes. A rocker arm including
an internal rocker passage may be operatively connected to the cam. The
rocker arm may contact a valve bridge at a central portion. The valve
bridge may be operatively connected to first and second engine valves at
its first and second ends, respectively. A slave piston incorporated into
the first end of the valve bridge and a master piston may be incorporated
into the central portion of the valve bridge. A hydraulic circuit may be
provided between the master and slave pistons. A bleed hole may be
provided above the slave piston. The master and slave pistons may be
selectively actuated and the bleed hole may be selectively blocked and
unblocked to provide partial bleeder braking as a result of the valve
actuation motion imparted from the cam to the valve bridge through the
rocker arm.