US4032262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Housing arrangement for a two-stage exhaust-gas turbocharger
Assignee: BBC Brown Boveri AG Switzerland
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Filing: 1975-12-16
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Granted: 1977-06-28
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Expires: 1995-12-16
Abstract
Abstract In a two-stage exhaust-gas turbocharger the shafts for each stage are disposed in laterally spaced, parallel relation. The exhaust-gas turbine of each stage is arranged within the same housing which can be a common housing or a twin housing with the housing parts joined together by flange connections. The bearing for the end of each shaft located adjacent the turbine is positioned within the housing while the bearing for the opposite end of the shaft associated with the compressor is positioned outside the housing.
Inventors
- 👤 Gottlieb Zehnder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:49
CPC Classifications
F; F02; F02B; F02B37/00; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
254 words
A two-stage exhaust-gas turbocharger for internal combustion machines comprising at least two turbochargers, each said turbocharger comprising a shaft, and a compressor and an exhaust-gas turbine each mounted in axially spaced relationship on said shaft, a first one of said turbochargers operating as a high pressure stage and a second one of said turbochargers operating as a low pressure stage, means associated with said two-stage exhaust-gas turbocharger for forming a path for compressed air with said compressors in said high pressure stage and said low pressure stage located in the path of said compressed air, said compressor in the low pressure stage of said turbocharger being located ahead of said compressor in the high pressure stage of said turbocharger in the flow path of the compressed air, said turbine in said low pressure stage of said turbocharger being located downstream of said turbine in said high pressure stage of said turbocharger relative to the flow of exhaust-gas through said two-stage exhaust-gas tubocharger, said shafts in each of said turbochargers disposed in laterally spaced parallel relation, said high pressure stage of said turbocharger having an exhaust gas outlet and said low pressure stage of said turbocharger having an exhaust-gas inlet, and a common housing for said turbine in said high pressure stage of said turbocharger and for said turbine in said low pressure stage of said turbocharger with said common housing including the exhaust-gas outlet for said high pressure stage of said turbocharger and the exhaust-gas inlet for said low pressure stage of said turbocharger.
Claim 2
Dependent Claim
254 words
A two-stage exhaust-gas turbocharger for internal combustion machines comprising at least two turbochargers, each said turbocharger comprising a shaft, and a compressor and an exhaust-gas turbine each mounted in axially spaced relationship on said shaft, a first one of said turbochargers operating as a high pressure stage and a second one of said turbochargers operating as a low pressure stage, means associated with said two-stage exhaust-gas turbocharger for forming a path for compressed air with said compressors in said high pressure stage and said low pressure stage located in the path of said compressed air, said compressor in the low pressure stage of said turbocharger being located ahead of said compressor in the high pressure stage of said turbocharger in the flow path of the compressed air, said turbine in said low pressure stage of said turbocharger being located downstream of said turbine in said high pressure stage of said turbocharger relative to the flow of exhaust-gas through said two-stage exhaust-gas tubocharger, said shafts in each of said turbochargers disposed in laterally spaced parallel relation, said high pressure stage of said turbocharger having an exhaust gas outlet and said low pressure stage of said turbocharger having an exhaust-gas inlet, and a common housing for said turbine in said high pressure stage of said turbocharger and for said turbine in said low pressure stage of said turbocharger with said common housing including the exhaust-gas outlet for said high pressure stage of said turbocharger and the exhaust-gas inlet for said low pressure stage of said turbocharger.
Claim 3
Dependent Claim
59 words
A two-stage exhaust-gas turbocharger, as set forth in claim 1, in which said high pressure stage of said turbocharger has an exhaust gas inlet and said low pressure stage of said turbocharger has an exhaust-gas outlet, and a second common housing including said exhaust-gas inlet of said high pressure stage and said exhaust-gas outlet of said low pressure stage.
Claim 4
Dependent Claim
58 words
A two-stage exhaust-gas turbocharger, as set forth in claim 2, wherein said common housing containing said exhaust-gas outlet from the high pressure stage and the exhaust-gas inlet to said low pressure stage is detachably connected to said second common housing containing the exhaust-gas inlet to the high pressure stage and the exhaust-gas outlet from the low pressure stage.
Claim 5
Dependent Claim
51 words
A two-stage exhaust-gas turbocharger, as set forth in claim 1, wherein the high pressure stage has an exhaust-gas inlet and the low pressure stage has an exhaust-gas outlet, and a separate housing for each of said exhaust-gas inlet of the high pressure stage and said exhaust-gas outlet from the low-pressure stage.
Claim 6
Dependent Claim
53 words
A two-stage exhaust-gas turbocharger, as set forth in claim 1, wherein said high pressure stage has an exhaust-gas inlet and said low-pressure stage has an exhaust-gas outlet, and said common housing includes said exhaust-gas inlet and outlet of said high pressure stage and said exhaust-gas inlet and outlet of said low pressure stage.
Claim 7
Dependent Claim
23 words
A two-stage exhaust-gas turbocharger, as set forth in claim 4, including means for detachably connecting said common housing and said separate housings together.
Claim 8
Dependent Claim
68 words
A two-stage exhaust-gas turbocharger, as set forth in claim 1, wherein said turbocharger includes a housing enclosing said high pressure stage and said low pressure stage of said turbochargers, said housing including said common housing, and bearings for said shafts for said high pressure stage of said turbocharger and said low pressure stage of said turbocharger which said bearings are located outside of said housing of said turbocharger.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |