Variable nozzle device for a turbocharger and method for operating the same
AssigneeHoneywell International Inc.
InventorsAlexis Lavez, Alain Lombard, Emmaruel Severin, Raphael Hettinger
Life of this patent
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Abstract
A variable nozzle device (1) for a turbocharger comprises an annular nozzle (3) formed between an inner wall (11) and an outer wall (10), and an annular arrangement of adjustable vanes (4) interposed in the nozzle (3) for defining a plurality of nozzle passages, wherein the nozzle (3) is adjustable by controllably adjusting the vanes (4) and by controllably varying an axial clearance between the outer wall (10) and the vanes (4).
Claims10
A variable nozzle device (1) for a turbocharger comprising:
- an annular nozzle (3) formed between an inner wall (11) and an outer wall (10), and
- an annular arrangement of adjustable vanes (4) interposed in the nozzle (3) for defining a plurality of nozzle passages,
- wherein the nozzle (3) is adjustable by controllably adjusting the vanes (4) and by controllably varying an axial clearance between the outer wall (10) and the vanes (4).
A method for operating a variable nozzle device (1) for a turbocharger comprising a plurality of vanes (4) arranged in a nozzle (3) defined between an inner wall (11) and an outer wall (10), the vanes (4) forming nozzle passages, the method comprising the steps of:
- adjusting the nozzle passages by controllably adjusting the vanes (4), and
- varying an axial clearance between the outer wall (10) and the vanes (4) by axially moving the outer wall (10) to and from the vanes (4).
A vane pivoting mechanism for a variable nozzle device (1) of a turbocharger comprising:
- at least one vane (4) attached to a gear (7) and a gear device (8) being in engagement with the gear (7) so that the vane (4) is pivoted when the gear device (8) is moved relatively to the gear (7).
Dependencies are inferred from the claim text.