A valve actuation assembly for an internal combustion engine is disclosed in which a rotatable rocker arm assembly is actuated by an engine driven camshaft to move a poppet valve reciprocably. The rocker arm assembly includes a hydraulic lash adjuster for disposition between the rocker arm and the valve stem. The lash adjuster includes an actuator at one end having an axially extending neck which terminates in an enlarged head. The enlarged head engages a foot assembly which includes a disk having a socket in which the head is positioned. A retainer ring is disposed in the socket and includes a wall portion which operates to establish an interference fit with the socket so as to fix the ring in the socket and a radially inwardly extending flange member which operates to define an opening through which the actuator neck extends but having a diameter less than that of the enlarged head portion of the actuator to thereby prevent removal of the head from the socket.
申请公布号
US5706771(A)
申请公布日期
1998.01.13
申请号
US19960773238
申请日期
1996.12.23
申请人
GENERAL MOTORS CORPORATION
发明人
VAN HEYNINGEN, PAUL ROBERT;ESTRATTI, OSCAR ALFREDO;MC CARROLL, MICHAEL EDWARD;WILLIAMS, ANTONIO ST. CLAIR LLOYD;O 'NEILL, DANIEL PATRICK;SMITH, DONALD R.;BURNS, JOHN JOSEPH