ROCKER SHAFT WITH DE-AERATION OIL GALLERY SEGMENT

摘要

A hollow rocker shaft including a central opening defined by a radially inner surface and a separator secured in the central opening of the rocker shaft is provided. A radially outer surface of the separator engages the radially inner surface of the rocker shaft via a press-fit. The separator divides the central opening of the rocker shaft into (1) a first chamber extending between a first chamber axial end and the separator, and (2) a second chamber extending between a second chamber axial end and the separator. The separator includes an orifice defined between the first chamber and the second chamber that provides fluid connection between the first chamber and the second chamber.

主权项

1. A switchable valve train assembly comprising:
a supply assembly including a pressurized fluid source for pressurized hydraulic fluid, and a solenoid and a control valve for selectively supplying the pressurized hydraulic fluid; a hydraulic lash adjuster feed channel in fluid connection with the pressurized fluid source; a switch channel in fluid connection with the control valve; a hollow rocker shaft including a central space with one or more chambers defined by a radially inner surface; a separator secured in the central space of the rocker shaft and a radially outer surface of the separator engages the radially inner surface of the rocker shaft,
the separator dividing the central space of the rocker shaft into (1) a first chamber extending between a first chamber axial end and the separator, and (2) a second chamber extending between a second chamber axial end and the separator, the separator including an orifice defined between the first chamber and the second chamber providing fluid connection between the first chamber and the second chamber, a first chamber end cap fixed in the rocker shaft defining the first chamber axial end, and a second chamber end cap fixed in the rocker shaft defining the second chamber axial end; wherein the hydraulic lash adjuster feed channel is in fluid communication with the first chamber; wherein the switch channel is in fluid communication with the second chamber; and a rocker arm assembly arranged on the rocker shaft includes a hydraulic lash adjuster connected to a first intake port and a locking assembly connected to a second intake port, the first chamber includes a first actuator port in fluid connection with the first intake port for the hydraulic lash adjuster, and the second chamber includes a second actuator port in fluid connection with the second intake port for the locking assembly.