US5954035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Venting arrangement for a crankcase of an internal combustion engine
Assignee: Daimler Benz AG
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Filing: 1999-01-25
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Granted: 1999-09-21
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Expires: 2019-01-25
Abstract
Abstract In a venting arrangement for a crankcase of an internal combustion engine including a centrifugal separator having a rotatable housing with an inlet channel for the admission of an oil-air mixture and an exit channel for the discharge of air from which the oil has been removed, the inlet channel extends essentially in a direction parallel to the axis of rotation of the housing, but in spaced relationship from the axis so that oil which has been separated from the oil-air mixture moves, subjected to centrifugal forces, radially outwardly at a 90° angle to the generally axial oil-air mixture flow through the separator.
Inventors
- 👤 Christian Hofer
- 👤 Thomas Kettner
- 👤 Siegfried Weber
- 👤 Roland Weik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:28
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/04; F01M2013/0422
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
93 words
A venting arrangement for a crankcase of an internal combustion engine comprising: a centrifugal oil separator supported so as to be rotatable about an axis of rotation and being connected to means for rotating said centrifugal oil separator, said centrifugal oil separator including a housing with an inlet channel for the admission of an oil-air mixture and an exit channel for the discharge of the air from which the oil has been removed, said inlet channel extending essentially in a direction parallel to said axis of rotation, but in radially spaced relationship therefrom.
Claim 2
Dependent Claim
93 words
A venting arrangement for a crankcase of an internal combustion engine comprising: a centrifugal oil separator supported so as to be rotatable about an axis of rotation and being connected to means for rotating said centrifugal oil separator, said centrifugal oil separator including a housing with an inlet channel for the admission of an oil-air mixture and an exit channel for the discharge of the air from which the oil has been removed, said inlet channel extending essentially in a direction parallel to said axis of rotation, but in radially spaced relationship therefrom.
Claim 3
Dependent Claim
27 words
A venting arrangement according to claim 1, wherein said housing has a radially outer annular wall and said inlet channel extends along said radially outer annular wall.
Claim 4
Dependent Claim
26 words
A venting arrangement according to claim 2, wherein said radially outer annular wall is provided with discharge openings for discharging oil separated from said oil-air mixture.
Claim 5
Dependent Claim
31 words
A venting arrangement according to claim 1, wherein an annular separation wall is arranged between within said radially outer annular wall in radially spaced relationship therefrom to form said inlet channel.
Claim 6
Dependent Claim
27 words
A venting arrangement according to claim 1, wherein baffles are arranged in said inlet channel which redirect said oil-air mixture for the separation of said oil therefrom.
Claim 7
Dependent Claim
26 words
A venting arrangement according to claim 1, wherein baffles are arranged in said inlet channel for the separation of oil from the oil-air mixture flowing therethrough.
Claim 8
Dependent Claim
18 words
A venting arrangement according to claim 6, wherein said baffles are webs angularly projecting into said inlet channel.
Claim 9
Dependent Claim
22 words
A venting arrangement according to claim 6, wherein at least two baffles are arranged in said inlet channel in axially spaced relationship.
Claim 10
Dependent Claim
37 words
A venting arrangement according to claim 1, wherein said housing includes a cover mounted to said crankcase and an admission channel is formed between said cover and said housing leading said oil-air mixture to said inlet channel.
Claim 11
Dependent Claim
22 words
A venting arrangement according to claim 9, wherein said inlet channel joins said admission channel with a 180° change of flow direction.
Claim 12
Dependent Claim
19 words
A venting arrangement according to claim 1, wherein said housing is connected to a compensating shaft for rotation therewith.
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) | 2002-09-20 | 2003-03-22 | 2003-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-09-20 | 2007-03-22 | 2007-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-09-20 | 2011-03-22 | 2011-09-21 | $7700.00 | Window Closed / Lapsed |