The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 15, 2011
Filed:
May. 05, 2008
Philippe Arnold, Hennecourt, FR;
Dominique Petitjean, Julienrupt, FR;
Anthony Ruquart, Thaon les Vosges, FR;
Guillaume Dupont, Thaon les Vosges, FR;
Denis Jeckel, Thaon les Vosges, FR;
Philippe Arnold, Hennecourt, FR;
Dominique Petitjean, Julienrupt, FR;
Anthony Ruquart, Thaon les Vosges, FR;
Guillaume Dupont, Thaon les Vosges, FR;
Denis Jeckel, Thaon les Vosges, FR;
Honeywell International Inc., Morristown, NJ (US);
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.