EP0730086A1 - Séparateur cyclone pour la ventilation de carter d'un moteur à combustion interne avec une soupape de ventilation - Google Patents

Séparateur cyclone pour la ventilation de carter d'un moteur à combustion interne avec une soupape de ventilation Download PDF

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Publication number
EP0730086A1
EP0730086A1 EP96710002A EP96710002A EP0730086A1 EP 0730086 A1 EP0730086 A1 EP 0730086A1 EP 96710002 A EP96710002 A EP 96710002A EP 96710002 A EP96710002 A EP 96710002A EP 0730086 A1 EP0730086 A1 EP 0730086A1
Authority
EP
European Patent Office
Prior art keywords
cyclone separator
membrane
crankcase
cyclone
channel
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.)
Granted
Application number
EP96710002A
Other languages
German (de)
English (en)
Other versions
EP0730086B1 (fr
Inventor
Matthias Bohl
Markus Haug
Hans Jensen
Helmut Scheib
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.)
Knecht Filterwerk GmbH
Original Assignee
Knecht Filterwerk GmbH
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 Knecht Filterwerk GmbH filed Critical Knecht Filterwerk GmbH
Publication of EP0730086A1 publication Critical patent/EP0730086A1/fr
Application granted granted Critical
Publication of EP0730086B1 publication Critical patent/EP0730086B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
    • F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
    • F01M13/022—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction
    • F01M13/023—Control valves in suction conduit

Definitions

  • the invention relates to a cyclone separator for the crankcase ventilation of an internal combustion engine with a ventilation valve according to the preamble of claim 1.
  • a generic device from DE 31 28 470 A1 is also known. There is already a structural unit between the vent valve and a cyclone separator. A disadvantage of that design is a relatively poor degree of separation of the cyclone separator.
  • the invention is concerned with the problem of creating a generic device in a structurally simple and efficient manner with a good efficiency of the cyclone separator.
  • the entire facility should be as small as possible.
  • the good separating effect of a cyclone separator provided according to the invention with a spiral channel results from the fact that the centrifugal force increases in the narrowing turns of the spiral while the flow speed remains constant within the spiral path, so that progressively finer oil particles can be thrown out, while oil particles which have already been ejected up to get carried away to the center. This effect is further increased when the spiral channel cross section becomes narrower in the direction of flow.
  • the cyclone separator according to the invention can be inserted together with the associated vent valve as a structural unit into a bulge in the housing wall of the crankcase from the inside.
  • part of the boundary walls of the oil separator with the associated suction space and ventilation valve can be formed directly by the wall of the crankcase. This can save material. In such a case, it is only necessary to pass the intake duct leading to the vent valve through the outer wall of the crankcase. All other parts of the cyclone separator can lie inside the crankcase and be mounted from there.
  • crankcase 1 to 3 is a component which can be inserted completely into the opening in the housing wall of a crankcase 1.
  • the cyclone part of this component consists of a spiral channel 2 with a radially outer inlet 3 and two outlets located in the center of the spiral, one of which discharges oil separated at the bottom as outlet opening 4 and the other at the top as cyclone suction opening 5 into a suction space 6 leads.
  • the intake chamber 6 is connected via a vent valve 7 to an intake port 8, via which oil-containing air is drawn in from the crankcase 1. The intake takes place with the aid of the combustion air which is led to the combustion chambers of the internal combustion engine.
  • the vent valve 7 consists of a connecting piece 9 connecting the intake space 6 to the intake port 8, the opening to the intake space 6 being closable by a valve disk integrated in a membrane 10.
  • the membrane 10 is designed as a flexible circular disk which is mounted radially on the outside in a housing 11 forming the suction space 6.
  • the storage is such that the membrane 10 is tightly clamped there by placing a cover 12 on an open suction housing 11.
  • the membrane 10 is exposed to atmospheric pressure.
  • the membrane 10 is in the valve open position by a spring 13 held.
  • the spring force is designed such that the vent valve 7 closes below a predeterminable negative pressure in the suction space 6.
  • a line 14 leading into the oil sump of the crankcase connects to the outlet opening 4 for separated oil.
  • a float valve can be inserted into this line 14, which prevents oil from being sucked into the cyclone separator if the vacuum is too high.
  • Such a float valve arrangement is described for example in DE 42 14 324 A.
  • the cyclone separator is provided with fastening flanges 15 for fastening to the outer wall of the crankcase 1.
  • the oil separation takes place in such a way that when oil-containing air has entered the inlet 3, the oil particles are separated on the spiral channel walls by centrifugal forces generated within the spiral channel 2. The separated oil then flows to the outlet opening 4, for which purpose the bottom of the cyclone part is designed accordingly.
  • a particularly efficient manufacture of the cyclone separator with vent valve results from the fact that the finished component is composed of three separately manufactured components in terms of housing.
  • One of these components is the cyclone part with open spiral channel 2, with the fixed and A suction chamber housing part with a top opening is tightly connected.
  • the membrane 10 is inserted into this opening and closed with a plastic snap cover 12 covering the suction space.
  • the intake manifold 8 is integrated in the housing part of the intake housing.
  • a receptacle 102 is formed in a wall 101 of a crankcase chamber of an internal combustion engine and is delimited by a wall 103 on the side facing away from the crankcase chamber.
  • a unit consisting of cyclone 104 and vent valve 105 is inserted into this receptacle from the inside of the crankcase space and fastened by means of screws 106.
  • the cyclone 104 has an inlet 107 for oil-containing air from the crankcase.
  • a channel in the form of a spiral 108 extends from the inlet 107 until an outlet 109 for cleaned air and an outlet 110 for separated oil are provided opposite each other in the region of the end of the channel.
  • the channel forming the spiral 108 is closed on the side opposite the inlet 107 by a cover plate 111 which has an opening 112 leading into the vent valve 105 opposite the outlet 109.
  • the vent valve 105 has a membrane 113 extending over its entire surface, the outer peripheral region 114 of which forms the seal between the receptacle 102 and the vent valve 105.
  • the cover plate 111 On the side facing away from the spiral 108, the cover plate 111 carries a tube section 115, whose end facing away from the cover plate 111 forms the outlet opening 116 of the vent valve 105. From the pipe section 115 runs parallel to the cover plate 111, a tubular line section 117, to which a connection 118 formed on the outside of the receptacle 102 for a connection line (not shown in the drawing) for cleaned air to a combustion chamber of the internal combustion engine connects.
  • the membrane 113 has in its central region a projection 119 facing the outlet opening 116, which protrudes into the outlet opening 116 against the force of a spring 120 supported on the cover plate 111.
  • protrusion 119 has penetrated into the outlet opening 116, the annular region surrounding the latter, on the side of the membrane 113 facing the outlet opening 116, rests on the outlet opening 116 in a closing manner.
  • the membrane 113 On the side facing away from the outlet opening 116, the membrane 113 has a bulge 121, which comes to rest against the wall 103 of the receptacle 102 when the vent valve 105 opens.
  • a stroke limitation for the membrane 113 is formed by these means.
  • the inlet 107 are arranged approximately in the center and the outlets 109, 110 in the outer region of the cyclone 104, so that the spiral 108 is flowed through from the inside to the outside.
  • an opening 122 is provided in the center of the wall 103 of the receptacle 102, through which the space delimited by the membrane 113 on the side of the membrane 113 facing away from the outlet opening 116 communicates with the ambient atmosphere.
  • the inlet 107 in the outer region and the outlets 109, 110 are arranged approximately in the center of the cyclone 104, so that the spiral 108 is flowed through from the outside inwards.
  • a sealing pipe 123 is inserted into the connection 118 formed on the outside on the receptacle 102 for the outlet line to the internal combustion engine and the pipe section 117 that is aligned therewith and runs inside the ventilation valve 105.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
EP96710002A 1995-03-01 1996-02-09 Séparateur cyclone pour la ventilation de carter d'un moteur à combustion interne avec une soupape de ventilation Expired - Lifetime EP0730086B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19507136 1995-03-01
DE19507136 1995-03-01

Publications (2)

Publication Number Publication Date
EP0730086A1 true EP0730086A1 (fr) 1996-09-04
EP0730086B1 EP0730086B1 (fr) 1998-04-22

Family

ID=7755352

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96710002A Expired - Lifetime EP0730086B1 (fr) 1995-03-01 1996-02-09 Séparateur cyclone pour la ventilation de carter d'un moteur à combustion interne avec une soupape de ventilation

Country Status (2)

Country Link
EP (1) EP0730086B1 (fr)
DE (2) DE59600159D1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998031452A1 (fr) * 1997-01-15 1998-07-23 Filterwerk Mann + Hummel Gmbh Dispositif pour extraire des particules de liquide d'un courant de gaz
WO1999006679A1 (fr) * 1997-07-28 1999-02-11 Volkswagen Aktiengesellschaft Valve de reaspiration des gaz du carter pour moteur a combustion interne
WO2001092690A1 (fr) * 2000-05-30 2001-12-06 Ing. Walter Hengst Gmbh & Co. Kg Dispositif pour deshuiler des gaz evacues du carter de vilebrequin d'un moteur a combustion interne
EP1233155A1 (fr) * 2001-02-19 2002-08-21 Honda Giken Kogyo Kabushiki Kaisha Separateur air/huile pour moteur à combustion
EP1407807A1 (fr) * 2002-10-09 2004-04-14 Robert Bosch Gmbh Dispositif pour la séparation de liquide d'un courant gazeux au moyen de forces centrifuges
EP0978639B1 (fr) * 1998-08-06 2004-10-13 Volkswagen Aktiengesellschaft Couvre culasse
WO2005085606A1 (fr) * 2004-03-08 2005-09-15 Reinz-Dichtungs-Gmbh Couvre-culasse avec separateur d'huile
US7059311B2 (en) 2004-08-12 2006-06-13 Shiloh Industries, Inc. Air/oil separating device
EP1568861A3 (fr) * 2004-02-06 2007-11-07 Polytec Automotive GmbH & Co. KG Séparateur d'huile pour les gaz de carter d'un moteur à combustion
US7992551B2 (en) 2008-11-26 2011-08-09 Toyota Motor Engineering & Manufacturing North America, Inc. Oil capturing device having a rotary component
DE102010009722A1 (de) * 2010-03-01 2011-09-01 Hengst Gmbh & Co. Kg Ölnebelabscheider mit wenigstens einem Zyklon

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19707597A1 (de) * 1997-02-26 1998-08-27 Knecht Filterwerke Gmbh Zyklon mit nachgeschaltetem Entlüftungsventil
DE10049429B4 (de) * 2000-10-06 2015-11-12 Volkswagen Ag Brennkraftmaschine mit Zylinderkurbelgehäuse-Entlüftung
DE20211329U1 (de) * 2002-07-26 2003-12-04 Hengst Gmbh & Co.Kg Ölabscheider zur Abscheidung von Öl aus dem Kurbelgehäuseentlüftungsgas einer Brennkraftmaschine
DE10247934A1 (de) * 2002-10-15 2004-04-29 Daimlerchrysler Ag Kurbelgehäuseentlüftung
DE20302220U1 (de) * 2003-02-11 2004-06-24 Hengst Gmbh & Co.Kg Ölabscheider zur Entölung von Kurbelgehäuseentlüftungsgasen einer Brennkraftmaschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1683039A (en) * 1928-09-04 Robert k
FR907424A (fr) * 1944-04-13 1946-03-12 Mecanique Du Ct Atel Reniflard récupérateur d'huile
GB1255642A (en) * 1968-01-23 1971-12-01 Perkins Engines Ltd Improvements in or relating to crankcase breathers for internal combustion engines
DE3326881A1 (de) * 1983-07-26 1984-05-24 Daimler-Benz Ag, 7000 Stuttgart Kurbelgehaeuseentlueftung fuer eine brennkraftmaschine
JPH03169313A (ja) * 1989-11-30 1991-07-23 Toyota Autom Loom Works Ltd 液滴分離装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1683039A (en) * 1928-09-04 Robert k
FR907424A (fr) * 1944-04-13 1946-03-12 Mecanique Du Ct Atel Reniflard récupérateur d'huile
GB1255642A (en) * 1968-01-23 1971-12-01 Perkins Engines Ltd Improvements in or relating to crankcase breathers for internal combustion engines
DE3326881A1 (de) * 1983-07-26 1984-05-24 Daimler-Benz Ag, 7000 Stuttgart Kurbelgehaeuseentlueftung fuer eine brennkraftmaschine
JPH03169313A (ja) * 1989-11-30 1991-07-23 Toyota Autom Loom Works Ltd 液滴分離装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 015, no. 409 (C - 0876) 18 October 1991 (1991-10-18) *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998031452A1 (fr) * 1997-01-15 1998-07-23 Filterwerk Mann + Hummel Gmbh Dispositif pour extraire des particules de liquide d'un courant de gaz
US6309436B1 (en) 1997-01-15 2001-10-30 Filterwerk Mann & Hummel Gmbh Device for separating liquid particles from a gas stream
WO1999006679A1 (fr) * 1997-07-28 1999-02-11 Volkswagen Aktiengesellschaft Valve de reaspiration des gaz du carter pour moteur a combustion interne
EP0978639B1 (fr) * 1998-08-06 2004-10-13 Volkswagen Aktiengesellschaft Couvre culasse
WO2001092690A1 (fr) * 2000-05-30 2001-12-06 Ing. Walter Hengst Gmbh & Co. Kg Dispositif pour deshuiler des gaz evacues du carter de vilebrequin d'un moteur a combustion interne
US6505615B2 (en) 2000-05-30 2003-01-14 Ing. Walter Hengst Gmbh & Co. Kg Device to deoil the crankcase ventilation gases of an internal combustion engine
US6530367B2 (en) 2001-02-19 2003-03-11 Honda Giken Kogyo Kabushiki Kaisha Engine air-oil separator
EP1233155A1 (fr) * 2001-02-19 2002-08-21 Honda Giken Kogyo Kabushiki Kaisha Separateur air/huile pour moteur à combustion
EP1407807A1 (fr) * 2002-10-09 2004-04-14 Robert Bosch Gmbh Dispositif pour la séparation de liquide d'un courant gazeux au moyen de forces centrifuges
EP1568861A3 (fr) * 2004-02-06 2007-11-07 Polytec Automotive GmbH & Co. KG Séparateur d'huile pour les gaz de carter d'un moteur à combustion
WO2005085606A1 (fr) * 2004-03-08 2005-09-15 Reinz-Dichtungs-Gmbh Couvre-culasse avec separateur d'huile
US7059311B2 (en) 2004-08-12 2006-06-13 Shiloh Industries, Inc. Air/oil separating device
US7992551B2 (en) 2008-11-26 2011-08-09 Toyota Motor Engineering & Manufacturing North America, Inc. Oil capturing device having a rotary component
DE102010009722A1 (de) * 2010-03-01 2011-09-01 Hengst Gmbh & Co. Kg Ölnebelabscheider mit wenigstens einem Zyklon

Also Published As

Publication number Publication date
EP0730086B1 (fr) 1998-04-22
DE19604708A1 (de) 1996-09-05
DE59600159D1 (de) 1998-05-28

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