Nozzled turbine
First Claim
1. A nozzle ring adapted for installation into a receiving bore in a turbine housing, the turbine housing having two flow passages having the same flow area formed therewithin and separated by a divider wall, each flow passage being connected to a respective gas inlet, the receiving bore surrounding a turbine wheel when the turbine housing is assembled into a turbocharger, the nozzle ring comprising:
- a first outer ring;
an inner ring disposed adjacent the first outer ring, said inner ring having an annular shape and disposed in axial alignment with the divider wall,a second outer ring disposed adjacent the inner ring, said second outer ring having a thicker cross section than the first outer ring;
a first plurality of vanes fixedly disposed between the first outer ring and the inner ring, the first plurality of vanes defining a first plurality of inlet openings therebetween that are in fluid communication with a slot formed in the nozzle ring and adapted to surround the turbine wheel;
a second plurality of vanes fixedly disposed between the second outer and the inner rings, the second plurality of vanes defining a second plurality of inlet openings therebetween that are in fluid communication with the slot;
wherein the first plurality of inlet openings collectively defines a first flow outlet area that is larger than a second flow outlet area collectively defined by the second plurality of inlet openings.
1 Assignment
0 Petitions
Accused Products
Abstract
A turbine includes a turbine housing having two gas passages of substantially the same flow area. A nozzle ring is disposed in the housing and around the turbine wheel. The nozzle ring includes first and second outer rings, and an inner ring disposed between the first and second outer rings. First and second pluralities of vanes are disposed between the rings. The second outer ring has a thicker cross section than the first outer ring such that a larger flow area is created between the first outer ring and the inner ring than a flow area created between the second outer ring and the inner ring.
23 Citations
23 Claims
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1. A nozzle ring adapted for installation into a receiving bore in a turbine housing, the turbine housing having two flow passages having the same flow area formed therewithin and separated by a divider wall, each flow passage being connected to a respective gas inlet, the receiving bore surrounding a turbine wheel when the turbine housing is assembled into a turbocharger, the nozzle ring comprising:
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a first outer ring; an inner ring disposed adjacent the first outer ring, said inner ring having an annular shape and disposed in axial alignment with the divider wall, a second outer ring disposed adjacent the inner ring, said second outer ring having a thicker cross section than the first outer ring; a first plurality of vanes fixedly disposed between the first outer ring and the inner ring, the first plurality of vanes defining a first plurality of inlet openings therebetween that are in fluid communication with a slot formed in the nozzle ring and adapted to surround the turbine wheel; a second plurality of vanes fixedly disposed between the second outer and the inner rings, the second plurality of vanes defining a second plurality of inlet openings therebetween that are in fluid communication with the slot; wherein the first plurality of inlet openings collectively defines a first flow outlet area that is larger than a second flow outlet area collectively defined by the second plurality of inlet openings. - View Dependent Claims (2, 3, 4, 5)
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6. A turbine, comprising:
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a turbine housing including at least two gas passages having the same flow area and disposed on opposing sides of a divider wall; a turbine wheel having a plurality of blades; a nozzle ring connected to the turbine housing and disposed around the turbine wheel, the nozzle ring having; a first outer ring, an inner ring disposed adjacent the first outer ring, said inner ring having an annular shape and disposed in axial alignment with the divider wall, a second outer ring disposed adjacent the inner ring, said second outer ring having a thicker cross section than the first outer ring; a first plurality of vanes fixedly disposed between the first outer and the inner rings, the first plurality of vanes defining a first plurality of inlet openings therebetween that are in fluid communication with a slot formed in the nozzle ring and surrounding the turbine wheel; a second plurality of vanes fixedly disposed between the second outer and the inner rings, the second plurality of vanes defining a second plurality of inlet openings therebetween that are in fluid communication with the slot; wherein the first plurality of inlet openings collectively defines a first flow outlet area that is larger than a second flow outlet area collectively defined by the second plurality of inlet openings. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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15. An internal combustion engine, comprising:
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a divided turbine having first and second inlets; a first plurality of cylinders connected to a first exhaust conduit, the first exhaust conduit being connected to the first inlet of the divided turbine; a second plurality of cylinders connected to a second exhaust conduit, the second exhaust conduit being connected to the second inlet of the divided turbine; a balance valve disposed to selectively route exhaust gas from the first exhaust conduit to the second exhaust conduit; an exhaust gas recirculation (EGR) system including a valve that selectively fluidly connects the first exhaust conduit with an intake system of the engine; wherein the divided turbine includes; a turbine housing including two gas passages having the same flow area and disposed on opposing sides of a divider wall, the two gas passages being fluidly connected to the first and second inlets of the divided turbine; a turbine wheel having a plurality of blades; a nozzle ring connected to the turbine housing and disposed around the turbine wheel, the nozzle ring having; a first outer ring, an inner ring disposed adjacent the first outer ring, said inner ring having an annular shape and disposed in axial alignment with the divider wall, a second outer ring disposed adjacent the inner ring, said second outer ring having a thicker cross section than the first outer ring; a first plurality of vanes fixedly disposed between the first outer and the inner rings, the first plurality of vanes defining a first plurality of inlet openings therebetween that are in fluid communication with a slot formed in the nozzle ring and surrounding the turbine wheel; a second plurality of vanes fixedly disposed between the second outer and the inner rings, the second plurality of vanes defining a second plurality of inlet openings therebetween that are in fluid communication with the slot; wherein the first plurality of inlet openings collectively defines a first flow outlet area that is larger than a second flow outlet area collectively defined by the second plurality of inlet openings. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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Specification