Patent US6684864B1 successfully refreshed from Google Patents.
US6684864B1
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US
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Method for removing oil from crankcase ventilation gases and devices for implementing said method
Assignee: ING WALTER HENGST & CO GmbH GmbH
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Filing: 2000-04-19
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Granted: 2004-02-03
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Expires: 2020-04-19
Abstract
Abstract The invention relates to a method for de-oiling crankcase ventilation gases of an internal combustion engine wherein an oil separating element, like a cyclone has crankcase ventilation gases flowing therethrough, and the oil droplets contained therein are separated. The method provides that the volume stream of the crankcase ventilation gases is divided in at least two partial volume streams, and at least one partial volume stream is guided through at least one oil separating element, wherein the magnitude of the at least two partial volume streams is controlled depending on the magnitude of the volume stream. Furthermore the invention relates to apparatus for accomplishing the method.
Inventors
- 👤 Jürgen Busen
- 👤 Sieghard Pietschner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:10
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/04; F01M2013/0038; F01M2013/005; F01M2013/0061; F01M2013/0066; F01M2013/0422; F01M2013/0427
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
97 words
A method for de-oiling crankcase ventilation gases from an internal combustion engine wherein the crankcase ventilation gases flow through an oil separating element and oil droplets contained in the stream are separated in the oil separating element, wherein a volume stream of the crankcase ventilation gases is divided into at least two partial volume streams, and at least one of said partial volume streams is guided through at least one said oil separating element, wherein a size of each of the at least two partial volume streams is controlled depending on a magnitude of the volume stream.
Claim 2
Independent Claim
97 words
A method for de-oiling crankcase ventilation gases from an internal combustion engine wherein the crankcase ventilation gases flow through an oil separating element and oil droplets contained in the stream are separated in the oil separating element, wherein a volume stream of the crankcase ventilation gases is divided into at least two partial volume streams, and at least one of said partial volume streams is guided through at least one said oil separating element, wherein a size of each of the at least two partial volume streams is controlled depending on a magnitude of the volume stream.
Claim 3
Dependent Claim
21 words
A method for de-oiling crankcase ventilation gases according to claim 1 , wherein said oil separating element comprises a cyclone element.
Claim 4
Independent Claim
100 words
An apparatus for de-oiling crankcase ventilation gases flowing in a volume stream from an internal combustion engine comprising: at least two oil separating elements arranged downstream of the internal combustion engine to receive at least a portion of the volume stream; at least one control element, through which at least a part of the volume stream is directed, arranged upstream of and in communication with at least one of the oil separating elements, to control a portion of the volume stream directed to the at least one of the oil separating elements, depending on a magnitude of the volume stream.
Claim 5
Independent Claim
100 words
An apparatus for de-oiling crankcase ventilation gases flowing in a volume stream from an internal combustion engine comprising: at least two oil separating elements arranged downstream of the internal combustion engine to receive at least a portion of the volume stream; at least one control element, through which at least a part of the volume stream is directed, arranged upstream of and in communication with at least one of the oil separating elements, to control a portion of the volume stream directed to the at least one of the oil separating elements, depending on a magnitude of the volume stream.
Claim 6
Dependent Claim
19 words
An apparatus according to claim 3 , wherein the at least two oil separating elements are arranged in parallel.
Claim 7
Dependent Claim
28 words
An apparatus according to claim 4 , wherein at least one control element comprises a common control element for all of the at least two oil separating elements.
Claim 8
Dependent Claim
29 words
An apparatus according to claim 4 , wherein the at least one control element comprises a separate control element for each of the at least two oil separating elements.
Claim 9
Dependent Claim
21 words
An apparatus according to claim 6 , wherein the control elements are arranged in series with their respective oil separating elements.
Claim 10
Dependent Claim
21 words
An apparatus according to claim 6 , wherein the control elements are arranged in parallel with their respective oil separating elements.
Claim 11
Dependent Claim
22 words
An apparatus according to claim 6 , including a further common control element arranged upstream of all of the separate control elements.
Claim 12
Dependent Claim
33 words
An apparatus according to claim 3 , wherein the at least two oil separating elements are arranged in series with at least one oil separating elements arranged downstream of another oil separating element.
Claim 13
Dependent Claim
29 words
An apparatus according to claim 10 , wherein the at least one control element comprises a separate control element for each of the at least two oil separating elements.
Claim 14
Dependent Claim
21 words
An apparatus according to claim 11 , wherein the control elements are arranged in series with their respective oil separating elements.
Claim 15
Dependent Claim
77 words
An apparatus according to claim 12 , wherein each control element is arranged to divide the volume stream guided thereto into two partial streams, depending on the arriving volume stream, wherein one of these partial streams flows through an associated oil separating element and to the control element in front of the downstream arranged oil separating element, and the other partial stream flows into a bypass line, which line passes by the downstream arranged oil separating element.
Claim 16
Dependent Claim
15 words
An apparatus according to claim 3 , wherein said oil separating elements comprise cyclone elements.
Claim 17
Dependent Claim
29 words
An apparatus according to claim 3 , wherein the control element comprises a passive element which can be actuated directly by at least a part of the volume stream.
Claim 18
Dependent Claim
34 words
An apparatus according to claim 3 , wherein the control element is an active element which can be actuated by a control signal resulting from measuring at least a part of the volume stream.
Claim 19
Dependent Claim
38 words
An apparatus according to claim 16 , wherein a measuring device for measuring at least a part of the volume stream comprises a wire through which an electrical current is directed, and the control element is electrically actuated.
Claim 20
Independent Claim
28 words
An apparatus according to claims 3 , wherein a measuring device for measuring the volume streams comprises a venturi pressure sensor, and the control element is actuated mechanically.
Claim 21
Dependent Claim
24 words
An apparatus according to claim 18 , further including a diaphragm acting on a tappet of the control element for actuating the control element.
Claim 22
Dependent Claim
48 words
An apparatus according to claim 3 , wherein the control element is arranged directly in a gas inlet of the associated oil separating element, and the control element is arranged to vary a gas inlet cross-section of the oil separating element between an open and a closed position.
Claim 23
Dependent Claim
24 words
An apparatus according to claim 20 , wherein the control element is arranged to vary the inlet cross section in a continuously variable manner.
Claim 24
Dependent Claim
25 words
An apparatus according to claim 20 , wherein the control element is arranged to vary the inlet cross section through a series of discrete steps.
Claim 25
Dependent Claim
48 words
An apparatus according to claim 3 , wherein the control element is arranged directly in a gas outlet of the associated oil separating element, and the control element is arranged to vary a gas outlet cross-section of the oil separating element between an open and a closed position.
Claim 26
Dependent Claim
24 words
An apparatus according to claim 23 , wherein the control element is arranged to vary the outlet cross section in a continuously variable manner.
Claim 27
Dependent Claim
25 words
An apparatus according to claim 23 , wherein the control element is arranged to vary the outlet cross section through a series of discrete steps.
Claim 28
Dependent Claim
56 words
An apparatus according to claim 20 , wherein in addition to the control element, an additional control element is arranged directly in an oil outlet of an associated oil separating element, and that the additional control is arranged to vary an oil outlet cross-section of the oil separating element between an open and a closed position.
Claim 29
Dependent Claim
26 words
An apparatus according to claim 26 , wherein the additional control element is arranged to vary the oil outlet cross section in a continuously variable manner.
Claim 30
Dependent Claim
27 words
An apparatus according to claim 26 , wherein the additional control element is arranged to vary the oil outlet cross section through a series of discrete steps.
Claim 31
Dependent Claim
25 words
An apparatus according to claim 26 , wherein the control element and the additional control element are coupled with each other to move in common.
Claim 32
Dependent Claim
64 words
An apparatus according to claim 29 , wherein the control element and the additional control element each comprise a valve ball which is biased in a closing direction, wherein the valve ball of the control element has a larger diameter than the valve ball of the additional control element and wherein the two valve balls are connected by a coupling element for common adjustment.
Claim 33
Dependent Claim
71 words
An apparatus according to claim 4 , wherein oil outlets of the at least two oil separating elements open into a common oil collecting vessel which is connected to a crankcase of the internal construction engine by a valve, wherein the oil outlet of at least one oil separating element comprises an additional control element which is arranged to vary an oil outlet cross-section between an open and a closed position.
Claim 34
Dependent Claim
26 words
An apparatus according to claim 31 , wherein the additional control element is arranged to vary the oil outlet cross section in a continuously variable manner.
Claim 35
Dependent Claim
27 words
An apparatus according to claim 31 , wherein the additional control element is arranged to vary the oil outlet cross section through a series of discrete steps.
Claim 36
Dependent Claim
40 words
An apparatus according to claim 4 , wherein the oil outlets of the at least two oil separating elements each open into a dedicated oil collecting vessel which is connected to crankcase of the internal combustion engine by a valve.
References Cited (Backward Citations)
DE3128470A1
Cited
US4878923A
Cited
US5158585A
Cited
US4925553A
Cited
US5460147A
Cited
US5944001A
Cited
US5964207A
Cited
US6279556B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-02-02 | 2007-08-04 | 2008-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-02-02 | 2011-08-04 | 2012-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-02-02 | 2015-08-04 | 2016-02-03 | $7700.00 | Window Closed / Lapsed |