Patent ID: 6109167
Filing Date: 2000-08-29
Classification: F02B,F15B,Y02T

Abstract:
An actuator for a turbocharger having a waste gate valve, comprising:a housing having a central longitudinal axis;a piston having a plurality of annular grooves thereon, the piston being slidably disposed with respect to the housing along the longitudinal axis, each of the plurality of annular grooves having a width and depth and thereby being adapted to respectively receive an O-ring therein, the piston having a shoulder thereon interposed between and defined by an adjacent pair of the grooves;the O-rings being sealingly engaged between the piston and the housing and having a cross-sectional width along the longitudinal axis;the grooves having a width along the longitudinal axis substantially larger than the width of the O-rings such that the O-rings can move axially within the grooves;an actuator rod attached to the piston and adapted for attachment to the waste gate valve of the turbocharger.