US4883031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine
Assignee: Dr Ing HCF Porsche AG
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Filing: 1988-08-09
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Granted: 1989-11-28
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Expires: 2008-08-09
Abstract
Abstract An internal combustion engine includes a crankcase with a crankshaft which drives at one end face of the crankcase, auxiliary aggregates--oil pump--and endless elements. The oil pump and the endless elements are covered off by means of a covering which consists of a sheet metal part including two thin-walled layers and is constructed pot-shaped in cross section. This light-weight covering which is simple in construction is secured at the end wall of the crankcase by means of an edge flange and by means of bolts.
Inventors
- 👤 Herbert Ampferer
- 👤 Klaus Groeger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 01:31
CPC Classifications
F; F01; F01M; F01M1/00; F01M1/02; F02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/22; F02B77/00; F02B77/11; F02B77/13; F02F; F02F7/00; F02F7/0065; F02F7/0073
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
162 words
An internal combustion engine comprising cylinder means and a crankshaft rotatably supported in a crankcase which adjacent an end face of the crankcase is constructed for the drive of at least one of auxiliary aggregates and endless elements housed in an accessory housing secured at the end face of the crankcase, cover means at least partly covering the at least one of auxiliary aggregates and endless members, said cover means extending at least over a partial area of the end face of the crankcase and being detachable, the cover means being a sheet metal part including at least two relatively thin-walled layers which contact one another and having a pot-shaped cross section, said cover means being secured at the end face of the crankcase by means of a circumferential edge flange and by means of bolts, and the cover means being supported with a section of a convexly curved base wall of the cover means at the housing by a sealing member.
Claim 2
Dependent Claim
162 words
An internal combustion engine comprising cylinder means and a crankshaft rotatably supported in a crankcase which adjacent an end face of the crankcase is constructed for the drive of at least one of auxiliary aggregates and endless elements housed in an accessory housing secured at the end face of the crankcase, cover means at least partly covering the at least one of auxiliary aggregates and endless members, said cover means extending at least over a partial area of the end face of the crankcase and being detachable, the cover means being a sheet metal part including at least two relatively thin-walled layers which contact one another and having a pot-shaped cross section, said cover means being secured at the end face of the crankcase by means of a circumferential edge flange and by means of bolts, and the cover means being supported with a section of a convexly curved base wall of the cover means at the housing by a sealing member.
Claim 3
Dependent Claim
16 words
An internal combustion engine according to claim 1, wherein the auxiliary aggregate is an oil pump.
Claim 4
Dependent Claim
16 words
An internal combustion engine according to claim 2, wherein the cylinder means are V-shaped cylinder rows.
Claim 5
Dependent Claim
23 words
An internal combustion engine according to claim 1, wherein the cover means includes an edge-like wall extending approximately perpendicularly to the edge flange.
Claim 6
Dependent Claim
23 words
An internal combustion engine according to claim 1, wherein the free end of the edge flange is provided with an angularly bent portion.
Claim 7
Dependent Claim
38 words
An internal combustion engine according to claim 1, wherein for purposes of mounting the sealing member, said section includes a pressed-out portion leading away from the base wall and the housing of the oil pump includes a recess.
Claim 8
Dependent Claim
27 words
An internal combustion engine according to claim 1, wherein the base wall is locally secured at a fixed part of the crankcase by means of a bolt.
Claim 9
Dependent Claim
26 words
An internal combustion engine according to claim 7 wherein the fixed part is a fastening pin for a tensioning or slide rail of an endless element.
Claim 10
Dependent Claim
24 words
An internal combustion engine according to claim 2, wherein a bushing-like axial extension of the crankshaft serves for the drive of the oil pump.
Claim 11
Dependent Claim
21 words
An internal combustion engine according to claim 9, wherein the extension carries at least one drive gear for an endless element.
Claim 12
Dependent Claim
31 words
An internal combustion engine according to claim 9, wherein the extension and the crankshaft are connected by means of a bolt which is effective in the axial direction of the crankshaft.
Claim 13
Dependent Claim
21 words
An internal combustion engine according to claim 11 wherein a drive gear is fixed between the last-mentioned bolt and the extension.
Claim 14
Dependent Claim
23 words
An internal combustion engine according to claim 4, wherein the free end of the edge flange is provided with an angularly bent portion.
Claim 15
Dependent Claim
40 words
An internal combustion engine according to claim 13, wherein for purposes of mounting the sealing member, said section includes a pressed-out portion leading away from the base wall and the housing is for a oil pump and includes a recess.
Claim 16
Dependent Claim
27 words
An internal combustion engine according to claim 14 wherein the base wall is locally secured at a fixed part of the crankcase by means of a bolt.
Claim 17
Dependent Claim
26 words
An internal combustion engine according to claim 15, wherein the fixed part is a fastening pin for a tensioning or slide rail of an endless element.
Claim 18
Dependent Claim
24 words
An internal combustion engine according to claim 16, wherein a bushing-like axial extension of the crankshaft serves for the drive of the oil pump.
Claim 19
Dependent Claim
20 words
An internal combustion engine according to claim 17 the extension carries at least one drive gear for an endless element.
Claim 20
Dependent Claim
31 words
An internal combustion engine according to claim 18, wherein the extension and the crankshaft are connected by means of a bolt which is effective in the axial direction of the crankshaft.
Claim 21
Dependent Claim
21 words
An internal combustion engine according to claim 19, wherein a drive gear is fixed between the last-mentioned bolt and the extension.
Claim 22
Dependent Claim
125 words
An internal combustion engine comprising: cylinder means; crankshaft rotatably supported in a crankcase having an end face, the crankshaft driving at least one of auxiliary aggregates and endless elements; an accessory housing secured at the end face of the crankcase for housing the at least one of auxiliary aggregates and endless elements; cover means for reducing noise from the at least one of auxiliary aggregates and endless elements, the cover means projecting over the accessory housing from a circumferential end flange of the cover means at the end face of the crankcase and extending to and supported substantially at the housing by a sealing member; and bolt means for detachably securing the cover by the circumferential end flange to the end face of the crankcase.
Claim 23
Dependent Claim
125 words
An internal combustion engine comprising: cylinder means; crankshaft rotatably supported in a crankcase having an end face, the crankshaft driving at least one of auxiliary aggregates and endless elements; an accessory housing secured at the end face of the crankcase for housing the at least one of auxiliary aggregates and endless elements; cover means for reducing noise from the at least one of auxiliary aggregates and endless elements, the cover means projecting over the accessory housing from a circumferential end flange of the cover means at the end face of the crankcase and extending to and supported substantially at the housing by a sealing member; and bolt means for detachably securing the cover by the circumferential end flange to the end face of the crankcase.
Claim 24
Dependent Claim
16 words
An internal combustion engine according to claim 21, wherein the cover means has a pot-shaped cross-section.
Claim 25
Dependent Claim
31 words
An internal combustion engine according to claim 22, wherein the cover means has a convexly curved base wall, a section of the base wall engaging the sealing member at the housing.
Claim 26
Dependent Claim
22 words
An internal combustion engine according to claim 21, wherein the cover means is supported solely at the housing by the sealing member.
Claim 27
Dependent Claim
22 words
An internal combustion engine according to claim 21, wherein the cover means to supported centrally at the housing by the sealing member.
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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) | 1992-11-27 | 1993-05-29 | 1993-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-27 | 1997-05-29 | 1997-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-27 | 2001-05-29 | 2001-11-28 | $7700.00 | Window Closed / Lapsed |