Patent US6446592B1 successfully refreshed from Google Patents.
US6446592B1
Expired / Lapsed
US
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Inverted internal combustion engine configuration
Assignee: WILKSCH AIRMOTIVE Ltd
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Filing: 2000-04-19
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Granted: 2002-09-10
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Expires: 2020-04-19
Abstract
Abstract An inverted aircraft internal combustion engine, such as a two-stroke, compression-ignition diesel engine, includes a wet sump lubrication system with a combined under-slung camshaft or valve gear cover and sump housing, as well as a turbocharger located above the wet sump operational oil level and lubricated from the wet sump system with gravity return to the sump.
Inventors
- 👤 Mark Conrad Wilksch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:12
CPC Classifications
F; F02; F02B; F02B39/00; F02B39/14; F01; F01M; F01M11/00; F01M11/06; F01M11/062; F01M11/065; F01M11/067; F01P; F01P3/00; F01P3/18; F02B67/00; F02B67/10; F01M1/00; F01M1/12; F01M2001/126; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; F02B2275/00; F02B2275/30; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
69 words
An inverted piston engine comprising a wet sump, a wet sump lubrication system containing a lubricant, a cylinder-head, an exhaust manifold, a turbocharger attached to said exhaust manifold, said turbocharger being positioned adjacent said cylinder head and above said wet sump, an oil pump for supplying lubricant to said turbocharger and a lubricant return means, wherein lubricant supplied to said turbocharger is returned by gravity to said wet sump.
Claim 2
Dependent Claim
69 words
An inverted piston engine comprising a wet sump, a wet sump lubrication system containing a lubricant, a cylinder-head, an exhaust manifold, a turbocharger attached to said exhaust manifold, said turbocharger being positioned adjacent said cylinder head and above said wet sump, an oil pump for supplying lubricant to said turbocharger and a lubricant return means, wherein lubricant supplied to said turbocharger is returned by gravity to said wet sump.
Claim 3
Dependent Claim
27 words
The inverted engine as set forth in claim 1 further comprising an in-head camshaft and wherein said camshaft is lubricated by lubricant entrained within said wet sump.
Claim 4
Dependent Claim
19 words
The inverted engine as set forth in claim 2 further comprising a rotary lubricant pump driven by said camshaft.
Claim 5
Dependent Claim
19 words
The inverted engine as set forth in claim 1 further comprising multiple rows of cylinder in said cylinder head.
Claim 6
Dependent Claim
20 words
The inverted engine as set forth in claim 1 wherein said turbocharger is mounted on a side of the engine.
Claim 7
Dependent Claim
20 words
The inverted engine as set forth in claim 1 wherein said turbocharger is mounted on an end of the engine.
Claim 8
Dependent Claim
21 words
The inverted engine as set forth in claim 1 wherein said turbocharger is at least partially supported by an exhaust manifold.
Claim 9
Dependent Claim
32 words
The inverted engine as set forth in claim 1 further comprising a bracket member and wherein said turbocharger is at least partially supported by said bracket member independent of said exhaust manifold.
Claim 10
Dependent Claim
38 words
The inverted engine as set forth in claim 1 wherein said exhaust manifold is a multiple branch exhaust manifold, the individual branch length of said manifold being less than twice the spacing of cylinders in said cylinder head.
Claim 11
Dependent Claim
18 words
The inverted engine as set forth in claim 1 wherein said engine is at least partially liquid cooled.
Claim 12
Dependent Claim
18 words
The inverted engine as set forth in claim 1 wherein said engine is at least partial air cooled.
Claim 13
Dependent Claim
18 words
The inverted engine as set forth in claim 1 wherein said engine is a two-stroke combustion cycle engine.
Claim 14
Dependent Claim
18 words
The inverted engine as set forth in claim 1 wherein said engine is a four-stroke combustion cycle engine.
Claim 15
Dependent Claim
16 words
The inverted engine as set forth in claim 1 wherein said engine is an in-line engine.
Claim 16
Dependent Claim
20 words
The inverted engine as set forth in claim 1 wherein said engine has at least one mutuallyinclined bank of cylinders.
Claim 17
Dependent Claim
21 words
The inverted engine as set forth in claim 1 further comprising an aircraft and said engine is mounted in said aircraft.
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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) | 2005-09-09 | 2006-03-11 | 2006-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-09-09 | 2010-03-11 | 2010-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-09-09 | 2014-03-11 | 2014-09-10 | $7700.00 | Window Closed / Lapsed |