US4804316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspension for the pivoting vane actuation mechanism of a variable nozzle turbocharger
Assignee: Honeywell International Inc
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Filing: 1987-10-27
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Granted: 1989-02-14
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Expires: 2007-10-27
Abstract
Abstract An improved suspension for a pivoting vane actuation mechanism is incorporated into a variable nozzle turbicharger in order to prevent vane binding. The mechanism includes a plurality of rotatable vanes mounted to a nozzle ring and a means for rotating the plurality of vanes. The nozzle ring and the means for rotating are coupled together so that thermal growth does not cause misalignment of the two.
Inventors
- 👤 Jean-Luc Fleury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:04
CPC Classifications
F; F01; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/16; F01D17/165; F02; F02B; F02B37/00; F02B37/12; F02B37/24; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
224 words
A turbocharger comprising: an exhaust gas driven turbine rotatably mounted to a shaft having a compressor impeller thereon; a compressor housing enclosing said compressor impeller; a center housing including bearing means for rotatably supporting the shaft; a turbine housing forming a volute therein for directing exhaust gas from an engine through an annular passage to said turbine and including a turbine side wall which defines one boundary of said annular passage; a flange member mounted between said center housing and said turbine housing; a nozzle ring defining one boundary of said annular passage; a plurality of vanes pivotably mounted to said nozzle ring; means for maintaining said nozzle ring a desired distance from said turbine side wall during turbocharger operation; a vane pin associated with each pivotable vane rotatably mounted through said nozzle ring; a vane ram rigidly attached to the vane pin such that the nozzle ring is located between the vane and the vane arm; an annular unison ring having a plurality of slots for receiving the vane arms therein; at least three dowels extending from within a bore in said flange member to within a bore in said nozzle ring; a roller rotatably mounted to each dowel, said rollers engaging the inner periphery of said unison ring; and a linkage means responsive to an actuator means, for rotating the unison ring.
Claim 2
Dependent Claim
224 words
A turbocharger comprising: an exhaust gas driven turbine rotatably mounted to a shaft having a compressor impeller thereon; a compressor housing enclosing said compressor impeller; a center housing including bearing means for rotatably supporting the shaft; a turbine housing forming a volute therein for directing exhaust gas from an engine through an annular passage to said turbine and including a turbine side wall which defines one boundary of said annular passage; a flange member mounted between said center housing and said turbine housing; a nozzle ring defining one boundary of said annular passage; a plurality of vanes pivotably mounted to said nozzle ring; means for maintaining said nozzle ring a desired distance from said turbine side wall during turbocharger operation; a vane pin associated with each pivotable vane rotatably mounted through said nozzle ring; a vane ram rigidly attached to the vane pin such that the nozzle ring is located between the vane and the vane arm; an annular unison ring having a plurality of slots for receiving the vane arms therein; at least three dowels extending from within a bore in said flange member to within a bore in said nozzle ring; a roller rotatably mounted to each dowel, said rollers engaging the inner periphery of said unison ring; and a linkage means responsive to an actuator means, for rotating the unison ring.
Claim 3
Dependent Claim
73 words
The turbocharger according to claim 1 wherein the linkage means includes a pin means engageable within a bore in the unison ring and attached to a first linkage member, said first linkage member rigidly connected to a rod member rotatable about its axis and having a second linkage member attached to its other end, and actuator means attached to the second linkage member for rotating the second linkage member about the rod member.
Claim 4
Dependent Claim
31 words
The turbocharger according to claim 2 wherein the rod member extends through a bore in the flange member to a point outside of the flange member and includes a bushing therearound.
Claim 5
Dependent Claim
39 words
The turbocharger according to claim 1 wherein said means for maintaining comprises at least three spacers attached to said nozzle ring and a bellville spring biasing the nozzle ring such that said spacer abuts against said turbine side wall.
Claim 6
Dependent Claim
22 words
The turbocharger according to claim 4 wherein said spacer has an axial length slightly larger than the axial width of the vanes.
Claim 7
Dependent Claim
35 words
The turbocharger according to claim 1 wherein said means for maintaining comprises a cylindrical spacer and a bolt solid through said spacer and securing the nozzle ring a spaced distance from said turbine side wall.
Claim 8
Dependent Claim
22 words
The turbocharger according to claim 6 wherein said spacer has an axial length slightly longer than the axial length of the vane.
Claim 9
Dependent Claim
25 words
The turbocharger of claim 7 wherein the distance between the extreme axial ends of the bores is longer than the axial length of said dowel.
Claim 10
Dependent Claim
15 words
The turbocharger of claim 8 wherein said bore diameters are larger than the dowel diameter.
Claim 11
Dependent Claim
175 words
A turbocharger for supplying compressed air to an engine including an exhaust gas driven turbine rotatably mounted to a shaft having a compressor rotatably mounted thereon, a turbine housing having an inner wall forming a volute therein for directing exhaust gas from said engine through an annular passage to said turbine and including a turbine side wall which defines one boundary of said annular passage, and means for varying the effective flow area of said annular passage comprising: an annular nozzle ring defining one boundary of said annular passage; a plurality of vanes pivotably mounted to said nozzle ring, each vane having a vane arm associated therewith; an annular unison ring having a plurality of slots for receiving said vane arms; means for pivoting said vanes; and at least three dowels extending from a bore in the turbocharger to a bore in said nozzle ring and including a roller mounted theron for engaging the inner periphery of said annular unison ring; and a spring means for biasing said nozzle ring toward said turbine side wall.
Claim 12
Dependent Claim
175 words
A turbocharger for supplying compressed air to an engine including an exhaust gas driven turbine rotatably mounted to a shaft having a compressor rotatably mounted thereon, a turbine housing having an inner wall forming a volute therein for directing exhaust gas from said engine through an annular passage to said turbine and including a turbine side wall which defines one boundary of said annular passage, and means for varying the effective flow area of said annular passage comprising: an annular nozzle ring defining one boundary of said annular passage; a plurality of vanes pivotably mounted to said nozzle ring, each vane having a vane arm associated therewith; an annular unison ring having a plurality of slots for receiving said vane arms; means for pivoting said vanes; and at least three dowels extending from a bore in the turbocharger to a bore in said nozzle ring and including a roller mounted theron for engaging the inner periphery of said annular unison ring; and a spring means for biasing said nozzle ring toward said turbine side wall.
Claim 13
Dependent Claim
25 words
The turbocharger of claim 10 wherein the distance between the extreme axial ends of the bores is longer than the axial length of said dowel.
Claim 14
Dependent Claim
16 words
The turbocharger of claim 11 wherein said bore diameters are slightly larger than the dowel diameter.
Claim 15
Dependent Claim
19 words
The turbocharger of claim 12 wherein the periphery of said unison ring is in rolling contact with said rollers.
Claim 16
Dependent Claim
36 words
The turbocharger of claim 12 further including at least one spacer between said nozzle ring and turbine side wall, said spacer having an axial length slightly greater than the axial length of said plurality of vanes.
Claim 17
Dependent Claim
146 words
In a turbocharger having an exhaust gas driven turbine rotatably mounted to a shaft having a compressor impeller thereon, a compressor housing enclosing said compressor impeller, a center housing including bearing means for rotatably supporting the shaft, a method of assembling the turbocharger comprising: mounting a flange member to the center housing; pivotably mounting a plurality of vanes to an annular nozzle ring; slidably mounting at least three dowels into at least three bores in said nozzle ring; slidably and rotatably mounting a roller to each dowel; mounting, in rolling contact, an annular unison ring on said rollers; aligning said dowels with bores formed in the flange member and sliding the dowel ends therein; securing a turbine housing defining a volute therein and including a side wall to the flange member; and simultaneously spring loading said nozzle ring a spaced distance from said turbine side wall.
Claim 18
Dependent Claim
146 words
In a turbocharger having an exhaust gas driven turbine rotatably mounted to a shaft having a compressor impeller thereon, a compressor housing enclosing said compressor impeller, a center housing including bearing means for rotatably supporting the shaft, a method of assembling the turbocharger comprising: mounting a flange member to the center housing; pivotably mounting a plurality of vanes to an annular nozzle ring; slidably mounting at least three dowels into at least three bores in said nozzle ring; slidably and rotatably mounting a roller to each dowel; mounting, in rolling contact, an annular unison ring on said rollers; aligning said dowels with bores formed in the flange member and sliding the dowel ends therein; securing a turbine housing defining a volute therein and including a side wall to the flange member; and simultaneously spring loading said nozzle ring a spaced distance from said turbine side wall.
Claim 19
Dependent Claim
41 words
The method according to claim 15 wherein the step of pivotably mounting said vanes includes the step of attaching a vane pin to said vane and a vane arm to the vane pin on the other side of said nozzle ring.
Claim 20
Dependent Claim
30 words
The method of claim 16 further including the steps of forming a plurality of slots on the periphery of the unison ring and aligning each vane arm with a slot.
Claim 21
Dependent Claim
23 words
The turbocharger of claim 10 further including means for maintaining said nozzle ring to said turbine side wall at a desired spaced distance.
Claim 22
Dependent Claim
39 words
The turbocharger of claim 18 wherein said means for maintaining comprises a cylindrically shaped sensor between the nozzle ring and turbine side wall and a bolt extending through said spacer and securing said nozzle ring and turbine side wall.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-14 | 1992-08-15 | 1993-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-14 | 1996-08-15 | 1997-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-14 | 2000-08-15 | 2001-02-14 | $7700.00 | Window Closed / Lapsed |