Power plants – Fluid motor means driven by waste heat or by exhaust energy... – With supercharging means for engine
Reexamination Certificate
2008-05-05
2011-11-15
Denion, Thomas (Department: 3748)
Power plants
Fluid motor means driven by waste heat or by exhaust energy...
With supercharging means for engine
C415S162000, C415S163000, C415S164000, C415S202000, C415S208100, C415S208300, C415S209300, C415S211100
Reexamination Certificate
active
08056336
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.
REFERENCES:
patent: 4880351 (1989-11-01), Inoue et al.
patent: 7114919 (2006-10-01), Scholz et al.
Arnold Philippe
Dupont Guillaume
Jeckel Denis
Petitjean Dominique
Ruquart Anthony
Alston & Bird LLP
Denion Thomas
Honeywell International , Inc.
Setayesh Cameron
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