EP0685635B1 - 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
EP0685635B1
EP0685635B1 EP95106551A EP95106551A EP0685635B1 EP 0685635 B1 EP0685635 B1 EP 0685635B1 EP 95106551 A EP95106551 A EP 95106551A EP 95106551 A EP95106551 A EP 95106551A EP 0685635 B1 EP0685635 B1 EP 0685635B1
Authority
EP
European Patent Office
Prior art keywords
crankcase ventilation
pipe
electrostatic filter
crankcase
oil separator
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.)
Expired - Lifetime
Application number
EP95106551A
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German (de)
English (en)
Other versions
EP0685635B2 (fr
EP0685635A1 (fr
Inventor
Gert Dipl.-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
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Filing date
Publication date
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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
Application granted granted Critical
Publication of EP0685635B1 publication Critical patent/EP0685635B1/fr
Publication of EP0685635B2 publication Critical patent/EP0685635B2/fr
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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 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, in the course of which at least one oil separator is arranged, from which a return line for separated oil leads to the crankcase is.
  • crankcase ventilation of the type mentioned above is known from DE 31 07 191 A1.
  • 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, the space between the outer cylinder and the middle cylinder just above its lower end having a tangentially opening 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 precipitator 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 When the oil separator is designed as a single-stage tubular electrostatic precipitator, it is preferably provided 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 which runs centrally through the tube in the longitudinal direction and is electrically insulated against the tube and can be fed with high voltage thin tube formed as a discharge electrode.
  • 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 which runs centrally through the tube in the longitudinal direction and is electrically insulated against 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 is directed outwards through the inside of the tube and towards 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)

Claims (11)

  1. Dispositif de respiration de carter de vilebrequin pour un moteur à combustion, en particulier d'un véhicule automobile, muni d'une conduite de respiration (10) susceptible d'être parcourue par les gaz de respiration du carter de vilebrequin qui sont conduits depuis le carter de vilebrequin du moteur à combustion jusqu'au circuit d'aspiration d'air dudit moteur, et sur le parcours de laquelle conduite de respiration, est disposé au moins un séparateur d'huile (1), à partir duquel part une conduite de retour (4) pour le retour au carter de vilebrequin de l'huile séparée, caractérisé en ce que le séparateur d'huile (1) est un électrofiltre.
  2. Dispositif de respiration de carter de vilebrequin selon la revendication 1, caractérisé en ce que l'électrofiltre est réalisé sous la forme d'un électrofiltre tubulaire.
  3. Dispositif de respiration de carter de vilebrequin selon la revendication 1, caractérisé en ce que l'électrofiltre est réalisé sous la forme d'un électrofiltre à plaques.
  4. Dispositif de respiration de carter de vilebrequin selon l'une des revendications 1 à 3, caractérisé en ce que l'électrofiltre est réalisé monoétagé.
  5. Dispositif de respiration de carter de vilebrequin selon l'une des revendications 1 à 3, caractérisé en ce que l'électrofiltre est réalisé polyétagé.
  6. Dispositif de respiration de carter de vilebrequin selon l'une des revendications précédentes, caractérisé en ce qu'un autre séparateur d'huile est disposé en série avec l'électrofiltre.
  7. Dispositif de respiration de carter de vilebrequin selon la revendication 6, caractérisé en ce que l'autre séparateur d'huile est placé en amont de l'électrofiltre.
  8. Dispositif de respiration de carter de vilebrequin selon la revendication 6 ou 7, caractérisé en ce que l'autre séparateur d'huile est un séparateur centrifuge et/ou un séparateur à chocs, et/ou un séparateur à fibres.
  9. Dispositif de respiration de carter de vilebrequin selon l'une des revendications précédentes caractérisé en ce qu'est disposé sur le parcours de la conduite de retour (4) un syphon (41) ou un clapet anti-retour.
  10. Dispositif de respiration de carter de vilebrequin selon l'une des revendications 2, 4 et 6 à 9, caractérisé en ce que l'électrofiltre est réalisé avec un tube métallique (2), relié électriquement à la masse, conduisant les gaz de respiration du carter de vilebrequin, et servant d'électrode de précipitation et avec un fil ou une barre ou un tube mince courant centralement dans la direction longitudinale à travers le tube (2), isolé électriquement du tube (2) et susceptible d'être alimenté en haute tension électrique pour servir d'électrode de décharge (3).
  11. Dispositif de respiration de carter de vilebrequin selon la revendication 10, caractérisé en ce qu'une première partie de la conduite de retour (4) est constituée par un intervalle annulaire (40) prévu à l'extrémité inférieure du tube (2) et qui est délimité vers l'extérieur par la face intérieure (20) du tube (2) et vers l'intérieur par la face extérieure d'un prolongement tubulaire (21) faisant saillie dans le tube (2).
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 EP0685635A1 (fr) 1995-12-06
EP0685635B1 true 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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10232602A1 (de) * 2002-07-18 2004-02-05 Mann + Hummel Gmbh Einrichtung zum Abscheiden von Aerosolen oder Partikeln aus Gasen

Families Citing this family (17)

* 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
DE19701463C1 (de) * 1997-01-17 1998-08-06 Hengst Walter Gmbh & Co Kg Elektrodenanordnung für Elektrofilter
DE19704461C1 (de) * 1997-02-06 1998-05-07 Hengst Walter Gmbh & Co Kg Verfahren und Vorrichtung zum Bestimmen des Ölanteils in einem Gasstrom
IT1310094B1 (it) * 1999-07-09 2002-02-11 Iveco Fiat Motore endotermico provvisto di un dispositivo di depurazione dei gasdi sfiato del basamento.
JP4441069B2 (ja) * 2000-06-19 2010-03-31 本田技研工業株式会社 エンジンにおけるブリーザ構造
DE20103652U1 (de) * 2001-03-02 2002-07-04 Hengst Walter Gmbh & Co Kg Einrichtung für die Entölung des Kurbelgehäuse-Entlüftungsgases einer Brennkraftmaschine
DE20211439U1 (de) 2002-07-12 2003-11-20 Hengst Gmbh & Co Kg Elektro-Abscheider mit Spülreinigung
DE20315935U1 (de) 2003-10-16 2005-02-24 Hengst Gmbh & Co.Kg Elektroabscheider mit Eigenspülung
SE527934C2 (sv) 2004-06-03 2006-07-11 Alfa Laval Corp Ab En anordning och ett förfarande för rening av en gas
DE202005010532U1 (de) * 2005-07-05 2006-11-16 Hengst Gmbh & Co.Kg Elektroabscheider mit auswechselbarer Niederschlagselektrode
EP2586534B1 (fr) 2011-10-24 2016-04-20 Alfa Laval Corporate AB Séparateur centrifuge, moteur à combustion interne et ensemble de séparateur centrifuge et procédé de séparation des contaminants d'un gaz de carter
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
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
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
DE102018204267A1 (de) 2018-03-20 2019-09-26 Mahle International Gmbh Ölnebelabscheider für eine Brennkraftmaschine
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 (4)

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Publication number Priority date Publication date Assignee Title
US4236900A (en) * 1978-03-30 1980-12-02 Maxwell Laboratories, Inc. Electrostatic precipitator apparatus having an improved ion generating means
US4588423A (en) * 1982-06-30 1986-05-13 Donaldson Company, Inc. Electrostatic separator
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

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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
DE1164158B (de) * 1962-02-02 1964-02-27 Maschf Augsburg Nuernberg Ag OElabscheider zur Kurbelgehaeuseentlueftung
NL6507057A (fr) * 1964-06-04 1965-12-06
CH437919A (de) * 1966-05-06 1967-06-15 G A Messen Jaschin Fa Einrichtung zum Reinigen von Auspuffgas mittels Elektrofilter
US3406669A (en) * 1966-12-14 1968-10-22 William D. Edwards Crankcase ventilation system
DE1978048U (de) * 1967-11-18 1968-02-01 Daimler Benz Ag Vorrichtung zur entlueftung des triebwerksraumes von brennkraftmaschinen.
GB1299713A (en) * 1969-01-10 1972-12-13 Albright & Wilson Improved electrostatic precipitators
DE2108270A1 (de) * 1971-02-20 1972-08-24 Klöckner-Humboldt-Deutz AG, 5000 Köln Hubkolbenmaschine mit Ölabscheider
DE3107191A1 (de) * 1981-02-26 1982-06-24 Daimler-Benz Ag, 7000 Stuttgart "kurbelgehaeuseentlueftung fuer kolbenmaschinen, insbesondere fuer brennkraftmaschinen"
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
US5243950A (en) * 1992-12-07 1993-09-14 Gekko International, L.C. Apparatus for the treatment of gases in a positive crankcase ventilation system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4236900A (en) * 1978-03-30 1980-12-02 Maxwell Laboratories, Inc. Electrostatic precipitator apparatus having an improved ion generating means
US4588423A (en) * 1982-06-30 1986-05-13 Donaldson Company, Inc. Electrostatic separator
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

Non-Patent Citations (1)

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Title
McGraw-Hill Encyclopedia of Science & Technology, 7th Edition, 1960, Seiten 269 und 270 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10232602A1 (de) * 2002-07-18 2004-02-05 Mann + Hummel Gmbh Einrichtung zum Abscheiden von Aerosolen oder Partikeln aus Gasen

Also Published As

Publication number Publication date
EP0685635B2 (fr) 2002-08-07
EP0685635A1 (fr) 1995-12-06
DE4415407A1 (de) 1995-11-09
ES2109750T3 (es) 1998-01-16
DE59500938D1 (de) 1997-12-11

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