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Title: Turbocharger with variable nozzle having vane sealing surfaces

Abstract

A variable nozzle for a turbocharger includes a plurality of vanes rotatably mounted on a nozzle ring and disposed in a nozzle flow path defined between the nozzle ring and an opposite nozzle wall. Either or both of the faces of the nozzle ring and nozzle wall include(s) at least one step that defines sealing surfaces positioned to be substantially abutted by airfoil surfaces of the vanes in the closed position of the vanes and to be spaced from the airfoil surfaces in positions other than the closed position. This substantial abutment between the airfoil surfaces and the sealing surfaces serves to substantially prevent exhaust gas from leaking past the ends of the airfoil portions. At the same time, clearances between the nozzle ring face and the end faces of the airfoil portions can be sufficiently large to prevent binding of the vanes under all operating conditions.

Inventors:
 [1];  [2];  [3];  [3];  [3]
  1. Hennecourt, FR
  2. Julienrupt, FR
  3. Thaon les Vosges, FR
Issue Date:
Research Org.:
Honeywell International Inc. (Morristown, NJ)
Sponsoring Org.:
USDOE
OSTI Identifier:
1033241
Patent Number(s):
8056336
Application Number:
12/115,245
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

Arnold, Philippe, Petitjean, Dominique, Ruquart, Anthony, Dupont, Guillaume, and Jeckel, Denis. Turbocharger with variable nozzle having vane sealing surfaces. United States: N. p., 2011. Web.
Arnold, Philippe, Petitjean, Dominique, Ruquart, Anthony, Dupont, Guillaume, & Jeckel, Denis. Turbocharger with variable nozzle having vane sealing surfaces. United States.
Arnold, Philippe, Petitjean, Dominique, Ruquart, Anthony, Dupont, Guillaume, and Jeckel, Denis. Tue . "Turbocharger with variable nozzle having vane sealing surfaces". United States. https://www.osti.gov/servlets/purl/1033241.
@article{osti_1033241,
title = {Turbocharger with variable nozzle having vane sealing surfaces},
author = {Arnold, Philippe and Petitjean, Dominique and Ruquart, Anthony and Dupont, Guillaume and Jeckel, Denis},
abstractNote = {A variable nozzle for a turbocharger includes a plurality of vanes rotatably mounted on a nozzle ring and disposed in a nozzle flow path defined between the nozzle ring and an opposite nozzle wall. Either or both of the faces of the nozzle ring and nozzle wall include(s) at least one step that defines sealing surfaces positioned to be substantially abutted by airfoil surfaces of the vanes in the closed position of the vanes and to be spaced from the airfoil surfaces in positions other than the closed position. This substantial abutment between the airfoil surfaces and the sealing surfaces serves to substantially prevent exhaust gas from leaking past the ends of the airfoil portions. At the same time, clearances between the nozzle ring face and the end faces of the airfoil portions can be sufficiently large to prevent binding of the vanes under all operating conditions.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {11}
}

Patent:

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