Rocker arm for brake with integrated hydraulic capsule

A rocker arm assembly for engine braking, comprising:

• a rocker arm having a valve end;
• and
• a hydraulic capsule disposed in the valve end and comprising:
• an integrated housing comprising an upper chamber configured to receive pressurized fluid and a lower chamber configured to be in fluid communication with the upper chamber,
• a pin disposed in the upper chamber and configured to be hydraulicly controlled to move between an extended position and a retracted position,
• a check valve assembly disposed in the lower chamber and configured to selectively enable fluid communication between the upper chamber and the lower chamber based on the position of the pin,
• a plunger at least partially disposed in the lower chamber and configured to be hydraulicly controlled to move between an extended position and a retracted position, and
• a first spring coupled to the plunger and configured to bias the plunger in the retracted position;
• wherein in the retracted position of the plunger, the plunger does not engage a valve bridge during rotation of the rocker arm, and in the extended position of the plunger, at least a portion of the plunger extends outwards from the valve end and is able to engage the valve bridge during rotation of the rocker arm.