EXHAUST BYPASS VALVE OF MULTI-STAGE TURBOCHARGER

An assembly for a two-stage turbocharger can include a first turbocharger stage and a second turbocharger stage where one of the stages includes a boss that includes a bore; an exhaust bypass valve that includes an arm pivotable to orient the exhaust bypass valve in an open state and a closed state; a valve shaft disposed at least in part in the bore and operatively coupled to the exhaust bypass valve where the valve shaft includes an inner end, an outer end and an axial stop disposed between the inner end and the outer end; an outer bushing disposed at least in part in the bore and located axially along the valve shaft; and an inner bushing disposed at least in part in the bore and located axially along the valve shaft between the axial stop and a portion of the arm of the exhaust bypass valve. 本发明涉及多级涡轮增压器的排放物旁通阀。种用于两级涡轮增压器的组件可以包括：第涡轮增压器级和第二涡轮增压器级，其中，两级中的个包括轴套，轴套包括孔；排放物旁通阀，该排放物旁通阀包括臂，该臂能够枢转以便将排放物旁通阀定向成打开状态和关闭状态；阀轴，该阀轴至少部分地设置在孔中并且操作性地联接到排放物旁通阀，其中，该阀轴包括内端部、外端部以及轴向止动部，该轴向止动部设置在内端部和外端部之间；外衬套，该外衬套至少部分地设置在孔中并且轴向地