EP0685635A1 - Ventilation de carter pour un moteur à combustion interne - Google Patents

Ventilation de carter pour un moteur à combustion interne Download PDF

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Publication number
EP0685635A1
EP0685635A1 EP95106551A EP95106551A EP0685635A1 EP 0685635 A1 EP0685635 A1 EP 0685635A1 EP 95106551 A EP95106551 A EP 95106551A EP 95106551 A EP95106551 A EP 95106551A EP 0685635 A1 EP0685635 A1 EP 0685635A1
Authority
EP
European Patent Office
Prior art keywords
crankcase ventilation
electrostatic filter
crankcase
oil separator
ventilation according
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
EP95106551A
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German (de)
English (en)
Other versions
EP0685635B1 (fr
EP0685635B2 (fr
Inventor
Gertdipl. Ing. Krausse
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.)
Ing Walter Hengst GmbH and Co KG
Original Assignee
Ing Walter Hengst GmbH and Co KG
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6517064&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0685635(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ing Walter Hengst GmbH and Co KG filed Critical Ing Walter Hengst GmbH and Co KG
Publication of EP0685635A1 publication Critical patent/EP0685635A1/fr
Publication of EP0685635B1 publication Critical patent/EP0685635B1/fr
Application granted granted Critical
Publication of EP0685635B2 publication Critical patent/EP0685635B2/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/88—Cleaning-out collected particles
    • 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
    • F01M2013/0466—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with electrostatic means
    • 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
    • F01M2013/0488—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with oil trap in the return conduit to the crankcase

Definitions

  • the invention relates to a crankcase ventilation for an internal combustion engine, in particular of a motor vehicle, with a ventilation line which leads from the crankcase of the internal combustion engine to its air intake side and through which the crankcase ventilation gases can flow and in the course of which at least one oil separator is arranged, from which a return line for separated oil is led to the crankcase .
  • crankcase ventilation of the type mentioned above is known from DE 31 07 191 Al.
  • the oil separator is filled with a separator pack, on which oil droplets entrained in the crankcase ventilation gas stream accumulate and are to flow from there into a collecting trough, from where the collected oil then flows back through the return line into the crankcase.
  • an oil separator for crankcase ventilation in which the oil is separated by means of impact surfaces and centrifugal force.
  • This known oil separator has three concentric cylinders, with the space between the outer cylinder and the middle cylinder just above its lower end having a tangentially flowing inlet connection for the oil-containing air.
  • On his The upper end of the space is connected to the space formed by the central cylinder and the inner cylinder, in which the air is guided through a helical surface while maintaining the direction of rotation.
  • this second intermediate space is connected to the inner cylinder having the baffles and tapering downwards in the shape of a truncated cone, which in turn is provided at the upper end with a vent leading to the outside.
  • an oil mist separator for internal combustion engines in particular for crankcase ventilation, is known, in which the oil droplets are separated in a cyclone. It is provided that the cyclone is preceded by a porous body to be flowed through by the oil mist entering the cyclone with a specific mean pore diameter and a specific length to be flowed through by the oil mist.
  • crankcase ventilation of the type mentioned, which ensures an improved degree of oil separation with a simultaneously reduced pressure drop when the crankcase ventilation gases pass through the oil separator.
  • crankcase ventilation of the type mentioned, which is characterized in that the oil separator is an electrostatic filter.
  • the electrical high voltage required for the operation of the electrostatic precipitator can be controlled by a corresponding electronic unit, e.g. generated from the low voltage of 12 or 24 V of a motor vehicle electrical system.
  • the electrostatic filter has, as it is e.g. is known from dedusting systems, one or more discharge electrodes, to which the high-voltage electrical voltage is applied, and one or more precipitation electrodes, on which, according to the invention, the oil droplets carried in the crankcase ventilation gas stream are deposited. From there, the easiest way to deliver them to the crankcase is by gravity by draining or draining the return line.
  • a preferred embodiment of the invention provides that the electrostatic filter is designed as a tubular electrostatic precipitator.
  • the electrostatic filter designed as a tube can advantageously be simply inserted into the vent line.
  • electrostatic precipitator is designed as a plate electrostatic precipitator which is arranged in a suitable geometric arrangement in the vent line.
  • the electrostatic precipitator can be designed in one or more stages.
  • At least one further oil separator is connected in series with the electrostatic precipitator in order to achieve the highest possible degree of oil separation without the entire oil separation having to take place within the electrostatic filter.
  • the aforementioned further oil separator is connected upstream of the electrostatic precipitator, a rough preliminary separation then taking place in the further oil separator and a final fine separation of the oil carried in the crankcase ventilation gas then taking place in the subsequent electrostatic precipitator.
  • the further oil separator connected in series with the electrostatic filter is preferably a centrifugal force and / or impact and / or fiber separator, as is known per se.
  • these additional oil separators can be designed in such a way that they represent the lowest possible flow resistance for the crankcase ventilation gases, since the final oil separation still takes place in the electrostatic precipitator.
  • a siphon or a check valve is arranged in the course of this return line.
  • the oil separator is designed as a single-stage tubular electrostatic precipitator, this is preferably with a metallic tube which conducts the crankcase ventilation gases and is electrically connected to ground as a precipitation electrode and with a wire or rod or wire which runs centrally through the tube in the longitudinal direction and is electrically insulated from the tube and can be fed with high voltage thin tube formed as a discharge electrode.
  • an electrostatic precipitator designed in this way has only components that are easy to install, but which nevertheless form an overall highly effective oil separator.
  • a first part of the return line is formed by an annular gap provided at the lower end of the tube, which extends outwards through the inside of the tube and to is formed on the inside by the outside of a smaller diameter pipe socket projecting into the pipe.
  • the embodiment of the crankcase ventilation shown here has an oil separator 1, which is designed as a tubular electrostatic precipitator and is connected to a ventilation line 10, which is led from the crankcase of an internal combustion engine to its air intake side.
  • an oil-containing crankcase ventilation gas stream 5 flows from below into the oil separator 1;
  • the entrained oil is separated and returned to the crankcase as a returning oil flow 6 through a return line 4.
  • An oil-free crankcase ventilation gas flow 7 leaves the oil separator 1 at the top.
  • the oil separator 1 which is designed here as a tubular electrostatic precipitator, is essentially formed by a cylindrical metal tube 2, a smaller diameter pipe socket 21 inserted into it from below, and a likewise metallic discharge electrode 3 which is guided centrally through the tube 2 in the longitudinal direction.
  • the discharge electrode 3 is designed here as a relatively thin rod or wire, which is held in an insulator 31 at its upper end and in an insulator 33 at its lower end.
  • the insulators 31, 33 are in turn connected to the pipe 2 via multi-arm holders 32, 34.
  • the holders 32, 34 are designed so that they affect the flow of the crankcase ventilation gas through the pipe 2 as little as possible.
  • the upper end of the discharge electrode 3 is in electrical connection with an electronic high-voltage generator 36, which generates a high voltage for supplying the discharge electrode 3 from 12 V or 24 V DC voltage.
  • an electrical corona is generated in the interior of the tube 2, which is electrically connected to ground via a ground connection 22.
  • This oil deposit 60 forms an oil film over time during operation of the oil separator 1, which runs down along the inside 20 of the tube 2.
  • annular gap 40 which is delimited on the outside by the inside 20 of the pipe 2 and on the inside by the outside of the pipe socket 21. At its lowest point, the annular gap 40 is connected to the return line 4, so that due to gravity on the inside 20 of the tube 2, oil running downward is removed.
  • the latter is formed here with a siphon 41, in which a gas-tight seal is formed by the oil collected there. Oil which has passed through the siphon 41 then flows back as a returning oil flow 6 into the crankcase of the associated internal combustion engine, not shown here.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Electrostatic Separation (AREA)
EP95106551A 1994-05-02 1995-05-02 Ventilation de carter pour un moteur à combustion interne Expired - Lifetime EP0685635B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4415407A DE4415407A1 (de) 1994-05-02 1994-05-02 Kurbelgehäuseentlüftung für eine Brennkraftmaschine
DE4415407 1994-05-02

Publications (3)

Publication Number Publication Date
EP0685635A1 true EP0685635A1 (fr) 1995-12-06
EP0685635B1 EP0685635B1 (fr) 1997-11-05
EP0685635B2 EP0685635B2 (fr) 2002-08-07

Family

ID=6517064

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95106551A Expired - Lifetime EP0685635B2 (fr) 1994-05-02 1995-05-02 Ventilation de carter pour un moteur à combustion interne

Country Status (3)

Country Link
EP (1) EP0685635B2 (fr)
DE (2) DE4415407A1 (fr)
ES (1) ES2109750T3 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19701463C1 (de) * 1997-01-17 1998-08-06 Hengst Walter Gmbh & Co Kg Elektrodenanordnung für Elektrofilter
ES2183719A1 (es) * 2000-06-19 2003-03-16 Honda Motor Co Ltd Estructura de respiradero en motor
WO2004009243A1 (fr) * 2002-07-18 2004-01-29 Mann+Hummel Gmbh Dispositif permettant de separer des aerosols ou particules de gaz
WO2004014561A1 (fr) * 2002-07-12 2004-02-19 Hengst Gmbh & Co. Kg Separateur electrostatique a systeme de rinçage
EP1067276B1 (fr) * 1999-07-09 2005-02-09 IVECO S.p.A. Moteur à combustion avec un dispositif d'aération du carter
WO2005039779A1 (fr) * 2003-10-16 2005-05-06 Hengst Gmbh & Co. Kg Separateur electrostatique autonettoyant
WO2005119020A1 (fr) 2004-06-03 2005-12-15 Alfa Laval Corporate Ab Dispositif et procede d'epuration d'un gaz
US9452435B2 (en) 2011-10-24 2016-09-27 Alfa Laval Corporate Ab Separating device, an internal combustion engine and centrifugal separator assembly and a method of separating contaminants from crankcase gas
DE102018204267A1 (de) 2018-03-20 2019-09-26 Mahle International Gmbh Ölnebelabscheider für eine Brennkraftmaschine
CN112024124A (zh) * 2020-07-21 2020-12-04 佛山市科蓝环保科技股份有限公司 一种空气净化器外壳及具有该外壳的空气净化器

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19642218C2 (de) * 1996-10-12 1999-04-15 Bosch Gmbh Robert Ölabscheidevorrichtung
DE19704461C1 (de) * 1997-02-06 1998-05-07 Hengst Walter Gmbh & Co Kg Verfahren und Vorrichtung zum Bestimmen des Ölanteils in einem Gasstrom
DE20103652U1 (de) * 2001-03-02 2002-07-04 Hengst Walter Gmbh & Co Kg Einrichtung für die Entölung des Kurbelgehäuse-Entlüftungsgases einer Brennkraftmaschine
DE202005010532U1 (de) * 2005-07-05 2006-11-16 Hengst Gmbh & Co.Kg Elektroabscheider mit auswechselbarer Niederschlagselektrode
FR3026660B1 (fr) * 2014-10-01 2016-12-23 Coutier Moulage Gen Ind Dispositif de separation de gouttes d’huile dans un melange de gaz et d’huile et procede de separation mettant en œuvre un tel dispositif de separation
FR3026661B1 (fr) * 2014-10-01 2016-12-23 Coutier Moulage Gen Ind Procede de separation de gouttes d’huile dans un melange de gaz et d’huile
JP6341043B2 (ja) * 2014-10-02 2018-06-13 トヨタ自動車株式会社 オイル除去装置
DE102018207817B4 (de) * 2018-05-18 2021-01-14 Bayerische Motoren Werke Aktiengesellschaft Brennkraftmaschine mit elektrostatischem Ölhobel
CN108745649A (zh) * 2018-05-24 2018-11-06 中国科学院过程工程研究所 一种高温气相合成的超细粉体收集装置及方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2354722A (en) * 1940-06-12 1944-08-01 Air Maze Corp Crankcase oil separator
US2742974A (en) * 1953-03-23 1956-04-24 Trion Inc Method and apparatus for cleaning air or gas laden with oil mists
FR1458957A (fr) * 1964-06-04 1966-11-18 Ici Ltd Appareil de précipitation électrostatique
US3406669A (en) * 1966-12-14 1968-10-22 William D. Edwards Crankcase ventilation system
DE2001092A1 (de) * 1969-01-10 1970-10-08 Albright & Wilson Elektrostatische Abscheider
EP0601683A1 (fr) * 1992-12-07 1994-06-15 Gekko International, L.C. Appareil pour le traitement de gaz dans un système de ventilation en pression positive du carter

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1164158B (de) * 1962-02-02 1964-02-27 Maschf Augsburg Nuernberg Ag OElabscheider zur Kurbelgehaeuseentlueftung
CH437919A (de) * 1966-05-06 1967-06-15 G A Messen Jaschin Fa Einrichtung zum Reinigen von Auspuffgas mittels Elektrofilter
DE1978048U (de) * 1967-11-18 1968-02-01 Daimler Benz Ag Vorrichtung zur entlueftung des triebwerksraumes von brennkraftmaschinen.
DE2108270A1 (de) * 1971-02-20 1972-08-24 Klöckner-Humboldt-Deutz AG, 5000 Köln Hubkolbenmaschine mit Ölabscheider
US4236900A (en) * 1978-03-30 1980-12-02 Maxwell Laboratories, Inc. Electrostatic precipitator apparatus having an improved ion generating means
DE3107191A1 (de) * 1981-02-26 1982-06-24 Daimler-Benz Ag, 7000 Stuttgart "kurbelgehaeuseentlueftung fuer kolbenmaschinen, insbesondere fuer brennkraftmaschinen"
US4588423A (en) * 1982-06-30 1986-05-13 Donaldson Company, Inc. Electrostatic separator
DE3238793C2 (de) * 1982-10-20 1986-09-04 Robert Bosch Gmbh, 7000 Stuttgart Verfahren und Vorrichtung zum Reinigen von Gasen
DE3701587C1 (en) * 1987-01-21 1987-11-26 Knecht Filterwerke Gmbh Oil mist separator for internal combustion engines, especially for crankcase breathing
DE4311906A1 (de) * 1993-04-10 1994-10-13 Audi Ag Vorrichtung zum Entlüften des Kurbelgehäuses einer Brennkraftmaschine
DE29700579U1 (de) * 1997-01-15 1997-03-13 Mann & Hummel Filter Anordnung zum Abscheiden von Flüssigkeitspartikeln aus einem Gasstrom

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2354722A (en) * 1940-06-12 1944-08-01 Air Maze Corp Crankcase oil separator
US2742974A (en) * 1953-03-23 1956-04-24 Trion Inc Method and apparatus for cleaning air or gas laden with oil mists
FR1458957A (fr) * 1964-06-04 1966-11-18 Ici Ltd Appareil de précipitation électrostatique
US3406669A (en) * 1966-12-14 1968-10-22 William D. Edwards Crankcase ventilation system
DE2001092A1 (de) * 1969-01-10 1970-10-08 Albright & Wilson Elektrostatische Abscheider
EP0601683A1 (fr) * 1992-12-07 1994-06-15 Gekko International, L.C. Appareil pour le traitement de gaz dans un système de ventilation en pression positive du carter

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5934261A (en) * 1997-01-17 1999-08-10 Ing. Walter Hengst Gmbh & Co. Electrode for electrostatic filter
DE19701463C1 (de) * 1997-01-17 1998-08-06 Hengst Walter Gmbh & Co Kg Elektrodenanordnung für Elektrofilter
EP1067276B1 (fr) * 1999-07-09 2005-02-09 IVECO S.p.A. Moteur à combustion avec un dispositif d'aération du carter
ES2183719A1 (es) * 2000-06-19 2003-03-16 Honda Motor Co Ltd Estructura de respiradero en motor
US7115153B2 (en) 2002-07-12 2006-10-03 Hengst Gmbh & Co. Kg Electric separator with a rinsing cleaning system
WO2004014561A1 (fr) * 2002-07-12 2004-02-19 Hengst Gmbh & Co. Kg Separateur electrostatique a systeme de rinçage
WO2004009243A1 (fr) * 2002-07-18 2004-01-29 Mann+Hummel Gmbh Dispositif permettant de separer des aerosols ou particules de gaz
US7105042B2 (en) 2002-07-18 2006-09-12 Mann & Hummel Gmbh Apparatus for separating aerosols or particles from gases
WO2005039779A1 (fr) * 2003-10-16 2005-05-06 Hengst Gmbh & Co. Kg Separateur electrostatique autonettoyant
US7473305B2 (en) 2003-10-16 2009-01-06 Hengst Gmbh & Co. Kg Self-flushing electrostatic separator
WO2005119020A1 (fr) 2004-06-03 2005-12-15 Alfa Laval Corporate Ab Dispositif et procede d'epuration d'un gaz
US7704300B2 (en) 2004-06-03 2010-04-27 Alfa Laval Corporate Ab Device and a method for cleaning of a gas
US9452435B2 (en) 2011-10-24 2016-09-27 Alfa Laval Corporate Ab Separating device, an internal combustion engine and centrifugal separator assembly and a method of separating contaminants from crankcase gas
DE102018204267A1 (de) 2018-03-20 2019-09-26 Mahle International Gmbh Ölnebelabscheider für eine Brennkraftmaschine
CN112024124A (zh) * 2020-07-21 2020-12-04 佛山市科蓝环保科技股份有限公司 一种空气净化器外壳及具有该外壳的空气净化器

Also Published As

Publication number Publication date
EP0685635B1 (fr) 1997-11-05
EP0685635B2 (fr) 2002-08-07
ES2109750T3 (es) 1998-01-16
DE4415407A1 (de) 1995-11-09
DE59500938D1 (de) 1997-12-11

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