VTG turbocharger with wastegate controlled by a common actuator

A variable turbine geometry (VTG) turbocharger (100) with a turbine wheel (12) in a turbine housing (4) comprising:

• a VTG assembly (25) including a series of vane rings (40, 42, 50) and a series of pivotable guide vanes (30) that are operably connected to at least one of the vane rings (50);
• a wastegate assembly (60) including a wastegate valve (62, 262) configured to control exhaust gas flow through a wastegate port (7) in the turbine housing (4) thereby selectively bypassing the turbine wheel (12);
• and
• a common actuator that controls movement of both the guide vanes (30) and the wastegate valve (62, 262),
• wherein the common actuator is a tab (44) protruding from the at least one of the vane rings (50) and providing actuation of the wastegate valve (62, 262) to selectively open the wastegate port (7).

A variable turbine geometry (VTG) turbocharger (100) comprising

• a turbine wheel (12) in a turbine housing (4),
• a VTG assembly (25) including an adjustment ring (50) and a plurality of pivotable guide vanes (30) that are operably connected to the adjustment ring (50),
• a wastegate assembly (60) including a wastegate valve (62, 262) configured to control exhaust gas flow through a wastegate port (7) in the turbine housing (4) thereby selectively bypassing the turbine wheel (12), and
• a common actuator (44) disposed on the adjustment ring (50) that controls movement of both the guide vanes (30) and the wastegate valve (62, 262), wherein the common actuator (44) is a tab (44) protruding from the at least one of the vane rings (50) and providing actuation of the wastegate valve (62, 262) to selectively open the wastegate port (7), and wherein the guide vanes (30) are actuated at all levels of exhaust gas flow through the turbine housing (4) and the wastegate valve (62, 262) is actuated based on an angular position of the adjustment ring (50) relative to the turbine housing (4).