Turbine assembly with semi-divided nozzle and half-collar piston
US8123470B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2007 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Dec 28, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2220/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A turbine assembly for a turbocharger includes a variable nozzle formed by a sliding half-collar piston. A first-stage nozzle has a plurality of first vanes supported by a first nozzle ring and extending axially therefrom. A second-stage nozzle has a second nozzle ring connected to the ends of the first vanes, and a plurality of second vanes extending axially therefrom. The piston regulates flow through the second-stage nozzle, while the first-stage nozzle remains open when the piston is fully closed. The second nozzle ring at least partially divides the first vanes from the second vanes. The half-collar piston includes recesses that receive the second vanes and only partially surround the girth of each second vane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.