US6003500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nitrogen oxides reducing aftercooler for turbocharged engines
Assignee: Industrial Power Generating Corp
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Filing: 1998-10-21
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Granted: 1999-12-21
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Expires: 2018-10-21
Abstract
Abstract An aftercooler apparatus that is connected to a turbocharger and to a reciprocating engine has a primary and a secondary saturation chamber, and a drying chamber. Turbocharged air from the turbocharger is directed into the primary saturation chamber. The incoming air is initially mixed with and cooled by water located at the bottom of the primary saturation chamber before being directed through a diffusion screen. The air exiting the diffusion screen enters the secondary saturation chamber where intense bubbling and foaming increases the air-water contact area to further cool the air and form an air-water mixture approaching the temperature and moisture level of saturation. The air-water mixture is then directed into the drying chamber where a majority of the moisture is removed from the air through the use of centrifugal force. The now cooler moist air is directed toward the engine intake manifold, whereby the moisture in the air stream acts to reduce the NOx formation during the combustion process. The aftercooler apparatus acts to reduce the formation of NOx emissions from turbocharged engines rather than attempting to remove the NOx emissions from the exhaust stream of the engines. The aftercooler apparatus may also be used to beneficially recycle industrial waste waters.
Inventors
- 👤 Charles J. Packard
- 👤 Peter Moliterno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:35
CPC Classifications
F; F02; F02M; F02M33/00; F02B; F02B29/00; F02B29/04; F02B29/045; F02B29/0468; F02B29/0481; F02B47/00; F02B47/02; F02M25/00; F02M25/022; F02M25/0221; F02M25/0225; F02M25/025; F02M25/028; F02B29/0493; F02B3/00; F02B3/06; F02B37/00; F02M25/0222; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
150 words
A system for reducing the formation of nitrogen oxides during the combustion process in a turbocharged engine, said engine having an intake manifold and a turbocharger for supplying compressed air to said intake manifold, said system comprising: a. means for increasing moisture with said compressed air to produce moist compressed air, disposed between said turbocharger and said intake manifold and being in fluid communication with said turbocharger and said intake manifold; b. wherein said moist compressed air is effective to reduce said formation of said nitrogen oxides during said combustion process; and c. wherein said means for increasing moisture within said compressed air includes a saturation chamber having a lower portion and a water supply disposed in said lower portion of said saturation chamber such that when said compressed air is introduced into said saturation chamber, a portion of said water supply evaporates to increase moisture within said compressed air.
Claim 2
Independent Claim
150 words
A system for reducing the formation of nitrogen oxides during the combustion process in a turbocharged engine, said engine having an intake manifold and a turbocharger for supplying compressed air to said intake manifold, said system comprising: a. means for increasing moisture with said compressed air to produce moist compressed air, disposed between said turbocharger and said intake manifold and being in fluid communication with said turbocharger and said intake manifold; b. wherein said moist compressed air is effective to reduce said formation of said nitrogen oxides during said combustion process; and c. wherein said means for increasing moisture within said compressed air includes a saturation chamber having a lower portion and a water supply disposed in said lower portion of said saturation chamber such that when said compressed air is introduced into said saturation chamber, a portion of said water supply evaporates to increase moisture within said compressed air.
Claim 3
Independent Claim
184 words
A system for reducing the formation of nitrogen oxides during the combustion process in a turbocharged engine, said engine having an intake manifold and a turbocharger for supplying compressed air to said intake manifold, said system comprising: a. means for increasing moisture within said compressed air to form moist compressed air, disposed between said turbocharger and said intake manifold and being in fluid communication with said turbocharger and said intake manifold; b. wherein said moist compressed air is effective to reduce the formation of said nitrogen oxides during said combustion process; and c. wherein said means for increasing moisture within said compressed air includes a saturation chamber having a lower portion and a water supply disposed in said lower portion of said saturation chamber such that when said compressed air is introduced into said saturation chamber, a portion of said water supply evaporates to increase moisture within said compressed air, said means for increasing moisture content of said compressed air has a water inlet in fluid communication with said lower portion of said saturation chamber for selective introduction of water into said lower portion.
Claim 4
Independent Claim
184 words
A system for reducing the formation of nitrogen oxides during the combustion process in a turbocharged engine, said engine having an intake manifold and a turbocharger for supplying compressed air to said intake manifold, said system comprising: a. means for increasing moisture within said compressed air to form moist compressed air, disposed between said turbocharger and said intake manifold and being in fluid communication with said turbocharger and said intake manifold; b. wherein said moist compressed air is effective to reduce the formation of said nitrogen oxides during said combustion process; and c. wherein said means for increasing moisture within said compressed air includes a saturation chamber having a lower portion and a water supply disposed in said lower portion of said saturation chamber such that when said compressed air is introduced into said saturation chamber, a portion of said water supply evaporates to increase moisture within said compressed air, said means for increasing moisture content of said compressed air has a water inlet in fluid communication with said lower portion of said saturation chamber for selective introduction of water into said lower portion.
Claim 5
Dependent Claim
32 words
The system as set forth in claim 2 wherein said system is configured for receiving gas flow from an exhaust gas recirculation system for further reducing the formation of said nitrogen oxides.
Claim 6
Independent Claim
210 words
A system for reducing the formation of nitrogen oxides during the combustion process in a turbocharged engine, said engine having an intake manifold and a turbocharger for supplying compressed air to said intake manifold, said system comprising: a. an aftercooler apparatus disposed between said turbocharger and said intake manifold and being in fluid communication with said turbocharger and said intake manifold, said aftercooler apparatus having a water inlet, a saturation chamber having a lower portion and a water supple in said lower portion of said saturation chamber such that when said compressed air is introduced into said saturation chamber, a portion of said water supply evaporates to increase moisture within said compressed air, and a drying chamber, said water inlet being in fluid communication with said lower portion of said saturation chamber, said saturation chamber having means for increasing moisture within said compressed air disposed therein to form moist compressed air, said means for increasing moisture within compressed air being in fluid communication with said drying chamber, and said drying chamber having means for producing an air-water mixture having a temperature and moisture level approximate to that of saturation ; and b. wherein said air-water mixture is effective to reduce the formation of said nitrogen oxides during said combustion process.
Claim 7
Independent Claim
210 words
A system for reducing the formation of nitrogen oxides during the combustion process in a turbocharged engine, said engine having an intake manifold and a turbocharger for supplying compressed air to said intake manifold, said system comprising: a. an aftercooler apparatus disposed between said turbocharger and said intake manifold and being in fluid communication with said turbocharger and said intake manifold, said aftercooler apparatus having a water inlet, a saturation chamber having a lower portion and a water supple in said lower portion of said saturation chamber such that when said compressed air is introduced into said saturation chamber, a portion of said water supply evaporates to increase moisture within said compressed air, and a drying chamber, said water inlet being in fluid communication with said lower portion of said saturation chamber, said saturation chamber having means for increasing moisture within said compressed air disposed therein to form moist compressed air, said means for increasing moisture within compressed air being in fluid communication with said drying chamber, and said drying chamber having means for producing an air-water mixture having a temperature and moisture level approximate to that of saturation ; and b. wherein said air-water mixture is effective to reduce the formation of said nitrogen oxides during said combustion process.
Claim 8
Dependent Claim
33 words
The system as set forth in claim 4 wherein said aftercooler apparatus is configured for receiving gas flow from an exhaust gas recirculation system for further reducing the formation of said nitrogen oxides.
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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) | 2002-12-20 | 2003-06-21 | 2003-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-12-20 | 2007-06-21 | 2007-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-12-20 | 2011-06-21 | 2011-12-21 | $7700.00 | Window Closed / Lapsed |