US5810556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon-carbon turbocharger housing unit for intermittent combustion engines
Assignee: National Aeronautics and Space Administration
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Filing: 1997-03-04
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Granted: 1998-09-22
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Expires: 2017-03-04
Abstract
Abstract An improved, lightweight, turbine housing unit for an intermittent combustion reciprocating internal combustion engine turbocharger is prepared from a lay-up or molding of carbon-carbon composite materials in a single-piece or two-piece process. When compared to conventional steel or cast iron, the use of carbon-carbon composite materials in a turbine housing unit reduces the overall weight of the engine and reduces the heat energy loss used in the turbocharging process. This reduction in heat energy loss and weight reduction provides for more efficient engine operation.
Inventors
- 👤 G. Burton Northam
- 👤 Philip O. Ransone
- 👤 H. Kevin Rivers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:31
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/24; F01D9/00; F01D9/02; F01D9/026; F02; F02F; F02F7/00; F02F7/0085; F05; F05D; F05D2300/00; F05D2300/20; F05D2300/22; F05D2300/224; F05D2300/60; F05D2300/603
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
85 words
In a turbocharger which is operatively associated with an intermittent combustion reciprocating engine for enhancing the efficiency thereof, the turbocharger including a housing unit for a turbine, a turbine which captures high temperature gases coming from an exhaust manifold of the engine, and a compressor which is driven by the high temperature gases and which pump high pressure air into an inlet and compression chambers of the engine; the improvement therein which comprises employing a turbine housing unit which is fabricated from carbon-carbon composite materials.
Claim 2
Dependent Claim
85 words
In a turbocharger which is operatively associated with an intermittent combustion reciprocating engine for enhancing the efficiency thereof, the turbocharger including a housing unit for a turbine, a turbine which captures high temperature gases coming from an exhaust manifold of the engine, and a compressor which is driven by the high temperature gases and which pump high pressure air into an inlet and compression chambers of the engine; the improvement therein which comprises employing a turbine housing unit which is fabricated from carbon-carbon composite materials.
Claim 3
Dependent Claim
34 words
The turbocharger of claim 1, wherein the turbine housing unit fabricated from carbon-carbon composite materials has an inside surface and an outside surface which are coated with a sealant to provide protection from oxidation.
Claim 4
Dependent Claim
12 words
The turbocharger of claim 2, wherein the sealant is a ceramic coating.
Claim 5
Dependent Claim
13 words
The turbocharger of claim 3, wherein the ceramic coating consists of silicon carbide.
Claim 6
Dependent Claim
13 words
The turbocharger of claim 3, wherein the ceramic coating consists of silicon nitride.
Claim 7
Dependent Claim
12 words
The turbocharger of claim 2, wherein said sealant is a metallic coating.
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) | 2001-09-21 | 2002-03-23 | 2002-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-09-21 | 2006-03-23 | 2006-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-09-21 | 2010-03-23 | 2010-09-22 | $7700.00 | Window Closed / Lapsed |