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US3796047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine supercharging air cooling system
Assignee: MURRAY W CORP
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Filing: 1972-07-05
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Granted: 1974-03-12
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Expires: 1992-07-05
Abstract
Abstract Disclosed is a method and system utilizing two turbochargers (gas driven compressor) for providing compressed air at relatively cool ambient temperature to an internal combustion engine. Interposed between the two turbochargers is an air-to-air intercooler. The first turbocharger is driven by the exhaust gases from the engine to provide compressed heated fresh air to the turbine side of the second turbocharger. The intercooler acts to lower the temperature prior to entrance into the second turbocharger and the remaining heat loss occurs by turbine expansion of this air across the turbine wheel, thus providing cool fresh compressed intake air into the engine. Cooling air for the intercooler is provided by the compressor or fan portion of the second turbocharger combination through the suction of the intake air to that compressor being placed across the intercooler.
Inventors
- 👤 J Crook
- 👤 J Cutler
- 👤 J Khanna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:35
CPC Classifications
F; F02; F02B; F02B29/00; F02B29/04; F02B29/0481; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
169 words
A supercharging system for an internal combustion engine having at least one air intake manifold and at least one exhaust manifold, including a first turbocharger comprising a first compressor component and a first turbine component being operatively connected through an inlet to said at least one exhaust manifold to receive exhaust gases for operating said first turbine component, said first turbine component being in driving relationship to said first compressor component, said first compressor component being operatively connected to transmit compressed air from a discharge opening through an intermediate intercooler to a second turbine component, said second turbine component being in driving relationship to a second compressor component, an inlet in said second compressor component connected to said intermediate intercooler for drawing ambient cooling air through said intercooler to cool said compressed air as it passes through said intercooler and into said second turbine component, means for transmitting air discharged from said second turbine component to said at least one air intake manifold, said second compressor discharging to ambient.
Claim 2
Dependent Claim
169 words
A supercharging system for an internal combustion engine having at least one air intake manifold and at least one exhaust manifold, including a first turbocharger comprising a first compressor component and a first turbine component being operatively connected through an inlet to said at least one exhaust manifold to receive exhaust gases for operating said first turbine component, said first turbine component being in driving relationship to said first compressor component, said first compressor component being operatively connected to transmit compressed air from a discharge opening through an intermediate intercooler to a second turbine component, said second turbine component being in driving relationship to a second compressor component, an inlet in said second compressor component connected to said intermediate intercooler for drawing ambient cooling air through said intercooler to cool said compressed air as it passes through said intercooler and into said second turbine component, means for transmitting air discharged from said second turbine component to said at least one air intake manifold, said second compressor discharging to ambient.
Claim 3
Dependent Claim
41 words
A system as called for in claim 1 wherein at least one air cleaner is installed to clean air to be drawn into said first compressor component and air to be drawn through said intercooler and into said second compressor component.
Claim 4
Dependent Claim
194 words
In a sUpercharger system for an internal combustion engine, a first turbocharger, having a turbine and a compressor, and a second turbocharger, having a turbine and a compressor, an air-to-air intercooler interposed between the first turbocharger compressor and the second turbocharger turbine, means for transmitting engine exhaust gas from said engine to the turbine of said first turbocharger, the compressor of said first turbocharger compressing ambient air and discharging said air at a first pressure ratio ranging from 3.2 to 4.5 and at a first temperature ranging from 400* to 500*F, means for transmitting said compressed air from said first turbocharger compressor through said intercooler to supply said air to the turbine of said second turbocharger at a second temperature of approximately 40% of said first temperature, said second turbine in said second turbocharger expanding said air to a final pressure ratio and final temperature considerably lower than said first pressure ratio and said second temperature, and at least double atmospheric pressure, and means for delivering said air at said final pressure ratio and said final temperature to said engine, said second turbocharger compressor drawing ambient air into said intercooler and discharging to ambient.
Claim 5
Dependent Claim
194 words
In a sUpercharger system for an internal combustion engine, a first turbocharger, having a turbine and a compressor, and a second turbocharger, having a turbine and a compressor, an air-to-air intercooler interposed between the first turbocharger compressor and the second turbocharger turbine, means for transmitting engine exhaust gas from said engine to the turbine of said first turbocharger, the compressor of said first turbocharger compressing ambient air and discharging said air at a first pressure ratio ranging from 3.2 to 4.5 and at a first temperature ranging from 400* to 500*F, means for transmitting said compressed air from said first turbocharger compressor through said intercooler to supply said air to the turbine of said second turbocharger at a second temperature of approximately 40% of said first temperature, said second turbine in said second turbocharger expanding said air to a final pressure ratio and final temperature considerably lower than said first pressure ratio and said second temperature, and at least double atmospheric pressure, and means for delivering said air at said final pressure ratio and said final temperature to said engine, said second turbocharger compressor drawing ambient air into said intercooler and discharging to ambient.
Claim 6
Dependent Claim
20 words
In a system as called for in claim 3, air cleaning means for cleaning ambient air brought into said system.
Claim 7
Dependent Claim
23 words
A system as called for in claim 4 wherein said first pressure ratio is approximately 3.7 and said second temperature is approximately 180*C.
Claim 8
Dependent Claim
23 words
A system as called for in claim 5 wherein said final pressure ratio is approximately 2.5 and said final temperature is approximately 100*F.
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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) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |