Turbocharger with sliding piston, and having vanes and leakage dams
Abstract
A turbocharger having a sliding piston for regulating exhaust gas flow into the turbine wheel includes a set of first vanes mounted on a fixed first wall of the turbine nozzle and projecting axially toward an opposite second wall of the nozzle, and/or a set of second vanes mounted on the end of the piston and projecting in an opposite axial direction toward the first wall of the nozzle. For the/each set of vanes, there are leakage dams formed on the wall that is adjacent the vane tips when the piston is closed. The leakage dams are closely adjacent the vane tips and discourage exhaust gas from leaking in a generally radial direction past the vane tips as the piston just begins to open from its fully closed position.
- Inventors:
-
- Nancy, FR
- Thaon Les Vosges, FR
- Issue Date:
- Research Org.:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1034352
- Patent Number(s):
- 8070425
- Application Number:
- 12/058,052
- Assignee:
- Honeywell International Inc. (Morristown, NJ)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02C - GAS-TURBINE PLANTS
- DOE Contract Number:
- FC26-06NT42873
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING
Citation Formats
Roberts, Quentin, and Alnega, Ahmed. Turbocharger with sliding piston, and having vanes and leakage dams. United States: N. p., 2011.
Web.
Roberts, Quentin, & Alnega, Ahmed. Turbocharger with sliding piston, and having vanes and leakage dams. United States.
Roberts, Quentin, and Alnega, Ahmed. Tue .
"Turbocharger with sliding piston, and having vanes and leakage dams". United States. https://www.osti.gov/servlets/purl/1034352.
@article{osti_1034352,
title = {Turbocharger with sliding piston, and having vanes and leakage dams},
author = {Roberts, Quentin and Alnega, Ahmed},
abstractNote = {A turbocharger having a sliding piston for regulating exhaust gas flow into the turbine wheel includes a set of first vanes mounted on a fixed first wall of the turbine nozzle and projecting axially toward an opposite second wall of the nozzle, and/or a set of second vanes mounted on the end of the piston and projecting in an opposite axial direction toward the first wall of the nozzle. For the/each set of vanes, there are leakage dams formed on the wall that is adjacent the vane tips when the piston is closed. The leakage dams are closely adjacent the vane tips and discourage exhaust gas from leaking in a generally radial direction past the vane tips as the piston just begins to open from its fully closed position.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {12}
}
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