Valve train assembly

A type II valve train assembly that selectively opens first and second exhaust valves, the valve train assembly comprising:

• an exhaust rocker arm assembly comprising:
• a first exhaust rocker arm configured to selectively open the first exhaust valve, a second exhaust rocker arm configured to selectively open the second exhaust valve, and an engine brake exhaust rocker arm configured to selectively and collectively open the first and second exhaust valves;
• a first exhaust hydraulic lash adjuster (HLA) associated with the first exhaust valve, and a second exhaust HLA associated with the second exhaust valve;
• and
• a single exhaust actuation assembly configured to selectively actuate the first and second exhaust HLAs so as to switch between an activated state and a deactivated state of cylinder deactivation, and to selectively actuate the engine brake exhaust rocker arm so as to switch between an activated state and a deactivated state of engine braking,
• wherein the switching between the activated state and the deactivated state of cylinder deactivation is controlled independently of the switching between the activated state and the deactivated state of engine braking.

A type II valve train assembly that selectively opens first and second intake valves and first and second exhaust valves, the valve train assembly comprising:

• an intake rocker arm assembly comprising:
• an intake rocker arm configured to selectively open the first and second intake valves;
• an intake hydraulic lash adjuster (HLA) associated with the intake rocker arm;
• and
• an intake actuation assembly configured to selectively actuate the intake HLA so as to switch between an activated state and a deactivated state of cylinder deactivation;
• and
• an exhaust rocker arm assembly comprising:
• a first exhaust rocker arm configured to selectively open the first and second exhaust valves;
• a second exhaust rocker arm configured to selectively open at least one of the first and second exhaust valves during engine braking;
• an exhaust HLA associated with the first exhaust rocker arm;
• and
• an exhaust actuation assembly configured to selectively actuate the exhaust HLA so as to switch between the activated state and the deactivated state of cylinder deactivation, and to selectively actuate the second exhaust rocker arm so as to switch between an activated state and a deactivated state of engine braking,
• wherein the switching between the activated state and the deactivated state of cylinder deactivation is controlled independently of the switching between the activated state and the deactivated state of engine braking.