| 摘要 |
A deactivating roller follower assembly for deactivating an associated poppet valve for an internal combustion engine includes a body including a valve end, a pivot end, and a plunger bore. The valve end of the body is configured to contact the associated poppet valve and the pivot end of the body is configured to contact a pivot of the associated internal combustion engine. The assembly further includes a pivotable arm including a hinged end and a free end. The hinged end is rotatably mounted to the valve end of the body. The free end includes a curvilinear engaging surface for transmitting a force required to activate the associated poppet valve. In addition, the assembly includes a plunger including a latching end and a piston end. The plunger is disposed in the plunger bore in the pivot end of the body. The plunger moves between an extended position and a retracted position. The latching end of the plunger selectively engages the free end of the arm to place the arm in a latched state, whereby preventing the arm from moving relative to the body. And, the latching end of the plunger selectively disengages the free end of the arm to place the arm in an unlatched state, whereby permitting the arm to move relative to the body. |
