Turbine assembly with semi-divided nozzle and half-collar piston

A turbine assembly (100) for a turbocharger includes a variable nozzle formed by a sliding half-collar piston (400). A first-stage nozzle has a plurality of first vanes (320) supported by a first nozzle ring (310) and extending axially therefrom. A second-stage nozzle has a second nozzle ring (330)...

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Bibliographische Detailangaben
Hauptverfasser:	Serres, Nicolas, Roberts, Quentin, Ferrari, Sebastian, Mitka, Jerome
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS ENGINE PLANTS IN GENERAL GAS-TURBINE PLANTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS 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 turbine assembly (100) for a turbocharger includes a variable nozzle formed by a sliding half-collar piston (400). A first-stage nozzle has a plurality of first vanes (320) supported by a first nozzle ring (310) and extending axially therefrom. A second-stage nozzle has a second nozzle ring (330) connected to the ends of the first vanes (320), and a plurality of second vanes (340) extending axially therefrom. The piston (400) regulates flow through the second-stage nozzle, while the first-stage nozzle remains open when the piston is fully closed. The second nozzle ring (330) at least partially divides the first vanes (320) from the second vanes (340). The half-collar piston (400) includes recesses (410) that receive the second vanes and only partially surround the girth of each second vane.