EP2406469B1 - Hohlkörper mit integrierter ölabscheideeinrichtung - Google Patents

Hohlkörper mit integrierter ölabscheideeinrichtung Download PDF

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Publication number
EP2406469B1
EP2406469B1 EP10700949.0A EP10700949A EP2406469B1 EP 2406469 B1 EP2406469 B1 EP 2406469B1 EP 10700949 A EP10700949 A EP 10700949A EP 2406469 B1 EP2406469 B1 EP 2406469B1
Authority
EP
European Patent Office
Prior art keywords
hollow body
pressure
hollow
swirler
oil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP10700949.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2406469A1 (de
Inventor
Jürgen MEUSEL
Ulf MÜLLER
Andreas Stapelmann
Daniel Paul
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thyssenkrupp Dynamic Components Teccenter AG
Original Assignee
ThyssenKrupp Presta TecCenter AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ThyssenKrupp Presta TecCenter AG filed Critical ThyssenKrupp Presta TecCenter AG
Publication of EP2406469A1 publication Critical patent/EP2406469A1/de
Application granted granted Critical
Publication of EP2406469B1 publication Critical patent/EP2406469B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L2001/0471—Assembled camshafts
    • F01L2001/0473—Composite camshafts, e.g. with cams or cam sleeve being able to move relative to the inner camshaft or a cam adjusting rod
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L2001/0475—Hollow camshafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M2013/0038—Layout of crankcase breathing systems
    • F01M2013/005—Layout of crankcase breathing systems having one or more deoilers
    • F01M2013/0055—Layout of crankcase breathing systems having one or more deoilers with a by-pass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0422—Separating oil and gas with a centrifuge device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0422—Separating oil and gas with a centrifuge device
    • F01M2013/0427—Separating oil and gas with a centrifuge device the centrifuge device having no rotating part, e.g. cyclone

Definitions

  • the present invention relates to an at least partially hollow cylindrical trained and hereinafter referred to as a hollow body with body ⁇ labscheide issued according to the preamble of claim 1.
  • the hollow body is formed by a camshaft.
  • camshaft with integrated oil separation is already known from a VDI report "camshaft with integrated oil separator N ⁇ A" (VDI reports No. 2042, 2008, page 152, Chapter 4 and Figure 6), wherein in the cavity of the camshaft, a helical swirl generator is arranged.
  • the present invention has for its object to provide a generic hollow body with integrated ⁇ labscheide issued by the safe operation of the same is guaranteed even at critical pressure conditions in the environment of ⁇ labscheide issued.
  • a predetermined efficiency of oil separation should be ensured at different pressure conditions.
  • the swirl generator arranged in the interior of the hollow body has means for variably influencing the pressure prevailing in the hollow space of the hollow body at a predetermined location.
  • these means are designed such that at a pressure occurring at the predetermined location equal to or greater than a predetermined target pressure, an automatic reduction of the actual pressure is effected at this point.
  • the swirl generator integrated in the hollow body is of any type and is characterized in that it has an axial bypass channel over its entire longitudinal extension into which a pressure-dependent bypass valve is integrated.
  • the swirl generator is at least partially formed such that through him the cavity of the hollow body is divided into two pressure technically separated or separable pressure ranges, wherein in the downstream seen in the flow direction pressure region via the first supply port oil-laden gas is introduced into the cavity and a Seen in the flow direction upstream pressure range via a second supply port also oil-laden gas can be fed.
  • the first feed opening is arranged behind the pressure-separating part of the swirl generator, viewed in the flow direction
  • the second feed opening viewed in the flow direction, is arranged in front of the separating part of the swirl generator.
  • the bypass valve integrated in the bypass valve is designed as a spring-loaded check valve such that upon reaching or exceeding the predetermined pressure in the cavity of the hollow body opens the bypass valve and the bypass channel is released, so that the two pressure ranges pressure and fluidically connected to each other - at least are long connected to each other as the pressure in the cavity is greater than or equal to the predetermined pressure.
  • the means for variably influencing the pressure prevailing in the cavity is alternatively or additionally formed by forming the swirl generator as a body extending in the axial direction of the hollow body, which has at least one helix circumferentially, the at least one helix being at least partially axially displaceable on or to the main body of the swirl generator is mounted - also such that upon reaching or exceeding the prescribed pressure in the cavity of the hollow body of the screw flight or flight section is displaced in the flow direction in particular against a restoring force.
  • Fig. 1 is a detail of a trained example as a camshaft hollow body 2 with an integrated swirl generator 4 is shown.
  • the swirl generator 4 of any type and has along its longitudinal extent in the flow direction X seen on a continuous bypass channel 4a, in which a bypass valve 4b is integrated.
  • the swirl generator 4 divides the cavity 2b of the camshaft 2 into pressure zones D1 and D2 which are separated from one another by pressure (or can be separated and reconnected via the bypass valve 4b designed as a spring-loaded check valve).
  • the first pressure region D1 is downstream of the swirl generator 4, while the second pressure region D2 is upstream of the swirl generator 4.
  • the part of the cavity 2b assigned to the first pressure region D1 is connected to the outer region A of the camshaft 2 via a first feed opening 20a, so that the blow-by gas to be cleaned can flow into the cavity 2b of the hollow body 2.
  • a second supply port 20b is provided, via which also from the outer region A of the camshaft 2 oil-laden gas (blow-by-gas) to the cavity 2b in the pressure range D2 can be fed.
  • the two pressure chambers D1 and D2 are connected to each other via the bypass valve 4b, so that a desired pressure equalization can take place and thus a desired pressure is maintained.
  • Swirl generator 4 upstream pressure range D2 be monitored with regard to a corresponding overpressure.
  • the bypass valve 4b may be formed, for example, as a non-return valve acted upon by a restoring force against the flow direction X.
  • Fig. 2 is designed as a camshaft hollow body 2 with integrated swirl generator 4 according to Fig. 1 illustrated in an embodiment in which the swirl generator 4 is formed as a in the axial direction of the hollow body 2 extending body with at least one circumferentially arranged screw flight S.
  • the axial body of the swirl generator 4 is traversed by a bypass channel 4a, which has a check valve or bypass valve 4b on its upstream side seen in the flow direction X.
  • the bypass channel 4a opens in the end region of the swirl generator 4 in the cavity 2b of the hollow body 2, preferably at an angle between 0 ° and 110 ° degrees to the axis of the swirl generator 4, in particular at an angle in the range of 90 ° degrees.
  • the bypass valve 4b is connected to the outer region A of the camshaft 2 via upstream feed openings 20b, viewed in the flow direction X, and is subjected to the pressure of the blow-by gas. Absorbs a pump, not shown, which is seen in the flow direction X downstream coupled to the camshaft 2 too strong or the pressure of the blow-by gas in the outer region A of the camshaft 2 is too large, opens the bypass valve 4b and outputs the bypass channel 4a for the Blow-by-gas free. In this way, the pressure drop over the swirl generator 4 volume flow dependent kept almost constant and the swirl generator 4 are operated at a predetermined efficiency.
  • the feed openings 20a and 20b for supplying the blow-by gas into the cavity 2b of the hollow body 2 are advantageously designed in the form of tangential bores.
  • tangential bores in the camshaft wall are understood as meaning bores in which a bore wall enters the cavity 2b of the hollow body 2 continuously.
  • a further possible embodiment of the hollow body 2 according to the invention is shown, in which the swirl generator 4 has means for variably influencing the pressure prevailing in the cavity 2b at a predetermined location pressure, which is formed by the swirl generator 4 as a in the axial direction of the hollow body.
  • 2 extending body is formed, which has circumferentially at least one worm thread S wherein the at least one worm gear S at least partially or in sections (worm (section)) S ') is mounted axially displaceably on the main body of the swirl generator 4 and the displaceable screw section or screw flight S' is acted upon by a restoring force F against the flow direction X.
  • At least one flight S or flight S ' is displaceable relative to another flight S or worm gear, so that the cross section of the helical flow path SW formed by the flight S is actively changeable or adjustable.
  • Such an active adjustment can be done for example by the gas flow of the blow-by gas itself.
  • the worm gear (section) S ' is for this purpose mounted axially displaceably on the base body of the swirl generator 4, wherein the restoring force F of a spring tries to keep the worm gear (section) S' in a predetermined position.
  • adjustable return spring of the necessary for an adjustment of the worm gear or screw section S 'pressure of the flowing blow-by gas and thus the desired target pressure is set.
  • the adjustment of the worm gear or the worm gear portion S 'can also be realized in the form of a manually operable slide.
  • FIG Fig. 4 Such a development of the invention is shown schematically in FIG Fig. 4 shown.
  • SW First print area

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP10700949.0A 2009-03-10 2010-01-16 Hohlkörper mit integrierter ölabscheideeinrichtung Active EP2406469B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009012401A DE102009012401A1 (de) 2009-03-10 2009-03-10 Hohlkörper mit integrierter Ölabscheideeinrichtung
PCT/EP2010/000231 WO2010102689A1 (de) 2009-03-10 2010-01-16 Hohlkörper mit integrierter ölabscheideeinrichtung

Publications (2)

Publication Number Publication Date
EP2406469A1 EP2406469A1 (de) 2012-01-18
EP2406469B1 true EP2406469B1 (de) 2013-07-03

Family

ID=41698175

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10700949.0A Active EP2406469B1 (de) 2009-03-10 2010-01-16 Hohlkörper mit integrierter ölabscheideeinrichtung

Country Status (6)

Country Link
US (1) US8496721B2 (ja)
EP (1) EP2406469B1 (ja)
JP (1) JP5528479B2 (ja)
CN (1) CN102348870B (ja)
DE (1) DE102009012401A1 (ja)
WO (1) WO2010102689A1 (ja)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009012402A1 (de) * 2009-03-10 2010-09-23 Thyssenkrupp Presta Teccenter Ag Wellenkörper mit integrierter Ölabscheideeinrichtung
JP5186066B2 (ja) * 2010-03-01 2013-04-17 ジヤトコ株式会社 気液混合ガスの気液分離装置
DE102010022483B4 (de) * 2010-06-02 2016-09-01 Thyssenkrupp Presta Teccenter Ag Welle, insbesondere Nockenwelle
FR2967722B1 (fr) * 2010-11-19 2015-11-13 Peugeot Citroen Automobiles Sa Dispositif permettant de transferer sous pression un fluide associe au fonctionnement d'un moteur thermique a quatre temps de vehicule
DE102011000458A1 (de) † 2011-02-02 2012-08-02 Thyssenkrupp Presta Teccenter Ag Welle, insbesondere Nockenwelle mit einem hohlen Wellenabschnitt
CN103362595B (zh) * 2013-07-04 2016-08-10 浙江吉利汽车研究院有限公司杭州分公司 一种具油气分离功能的凸轮轴组件
US9970476B2 (en) 2016-02-19 2018-05-15 GM Global Technology Operations LLC Crankshaft assembly with core plug and method of manufacturing a crankshaft assembly
CN106226972A (zh) * 2016-08-31 2016-12-14 武汉光迅科技股份有限公司 一种半导体光放大器工作控制方法及系统
DE102017114645B4 (de) 2017-06-30 2019-04-18 Thyssenkrupp Ag Ventilschieber und Abscheider mit einem solchen Ventilschieber
DE102017114646B4 (de) * 2017-06-30 2023-08-03 Thyssenkrupp Ag Förder- und Verdichterelement, Hohlwelle, Verbrennungsmotor und Verfahren zum Reinigen von Blowby-Gasen
JP7340318B2 (ja) * 2019-12-20 2023-09-07 株式会社Subaru 遠心式オイルミストセパレータ、レシプロエンジン及び航空機

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS585044Y2 (ja) 1979-04-16 1983-01-28 日産自動車株式会社 内燃機関のブロ−バイガス環元装置用オイルセパレ−タ
JPS61175213A (ja) * 1985-01-30 1986-08-06 Honda Motor Co Ltd エンジンにおけるカムケ−スのブリ−ザ装置
DE102004008826A1 (de) * 2004-02-20 2005-09-08 Mahle Filtersysteme Gmbh Zentrifugal-Ölnebelabscheider in einem Verbrennungsmotor
DE102004011177B4 (de) * 2004-03-08 2014-07-31 Reinz-Dichtungs-Gmbh Zylinderkopfhaube mit Ölabscheider
DE102005042725A1 (de) * 2004-09-23 2006-04-27 Mahle International Gmbh Axialzyklon als Ölnebelabscheider eines Kraftfahrzeug-Verbrennungsmotors
DE102005022254A1 (de) 2005-05-10 2006-11-30 Mahle International Gmbh In eine axial hohle Nockenwelle eines Verbrennungsmotors integrierte Zentrifugal-Ölnebelabscheidereinrichtung
US7717101B2 (en) * 2005-05-10 2010-05-18 Mahle International Gmbh Centrifugal oil mist separation device integrated in an axial hollow shaft of an internal combustion engine
DE102005034273A1 (de) * 2005-07-22 2006-06-14 Daimlerchrysler Ag Brennkraftmaschine

Also Published As

Publication number Publication date
DE102009012401A1 (de) 2010-09-23
WO2010102689A1 (de) 2010-09-16
EP2406469A1 (de) 2012-01-18
CN102348870B (zh) 2014-05-07
JP2012519797A (ja) 2012-08-30
US8496721B2 (en) 2013-07-30
CN102348870A (zh) 2012-02-08
JP5528479B2 (ja) 2014-06-25
US20120023876A1 (en) 2012-02-02

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