VTG turbocharger with wastegate controlled by a common actuator

A variable turbine geometry (VTG) turbocharger (100) includes a VTG assembly (25) for controlling guide vanes (30) in combination with a wastegate assembly (60, 260) having a wastegate valve (62, 262) configured to control exhaust gas flow through a wastegate port (7) in the turbine housing (4) ther...

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Bibliographische Detailangaben
1. Verfasser:	Lotz, Robert
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL ENGINE PLANTS IN GENERAL HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	A variable turbine geometry (VTG) turbocharger (100) includes a VTG assembly (25) for controlling guide vanes (30) in combination with a wastegate assembly (60, 260) having 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). The guide vanes (30) are actuated continuously, while the wastegate valve (62, 262) only starts to open at a predetermined configuration of the VTG assembly (25) in which the guide vanes 30 are open to a set amount. For some exhaust gas flow rates, the guide vanes (30) and the wastegate valve (62, 262) are fully open at the same time. A common actuator (110, 50) controls both the guide vanes (30) and the wastegate valve (62, 262) of the wastegate assembly (60, 260).