EP2558690B1 - Séparateur de brouillard d'huile d'un dispositif de purge de carter de vilebrequin d'un moteur à combustion interne - Google Patents

Séparateur de brouillard d'huile d'un dispositif de purge de carter de vilebrequin d'un moteur à combustion interne Download PDF

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Publication number
EP2558690B1
EP2558690B1 EP11719207.0A EP11719207A EP2558690B1 EP 2558690 B1 EP2558690 B1 EP 2558690B1 EP 11719207 A EP11719207 A EP 11719207A EP 2558690 B1 EP2558690 B1 EP 2558690B1
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EP
European Patent Office
Prior art keywords
valve
oil
channel
oil mist
condensate
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Active
Application number
EP11719207.0A
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German (de)
English (en)
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EP2558690A1 (fr
Inventor
Dirk Hornung
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Hengst SE and Co KG
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Hengst SE and Co KG
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Publication of EP2558690A1 publication Critical patent/EP2558690A1/fr
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    • 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
    • F01M13/04—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
    • F01M2013/0438—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a filter
    • 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
    • F01M2013/0494—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 using check valves

Definitions

  • the present invention relates to a ⁇ lnebelabscheider a crankcase ventilation device of an internal combustion engine, with a separator housing, with a raw gas from the crankcase of the internal combustion engine in a Rohgas Society the separator leading raw gas duct, with a clean gas from a clean gas region of the separator discharging clean gas duct and with a separated from the crankcase ventilation gas in oil the crankcase of the internal combustion engine recirculating oil return passage, in the course of which a valve is arranged, which opens the oil return passage falls below a predetermined pressure difference between the two sides of the valve.
  • An oil mist separator with the features indicated above is made US Pat. No. 6,907,869 B2 . US 2001/054418 A1 . FR 2932843 A1 and DE 100 2006 018783 known.
  • the arranged in the course of the oil return passage valve here is a check valve, which is preferably located near the crankcase of the internal combustion engine, ie from the oil mist separator, to open the valve by the pressure of the oil collected upstream of the valve against the pressure prevailing in the crankcase gas pressure and then drain the oil from the oil return passage in the crankcase of the engine.
  • a condensate return passage leads parallel to the oil return passage to the crankcase of the internal combustion engine from the deepest in use position range of the raw gas channel, wherein the condensate return passage is performed without a valve or a siphon.
  • the object is to provide an oil mist separator of the type mentioned, which avoids the disadvantages mentioned and with the one hand, a reliable and trouble-free operation is ensured even under unfavorable pressure conditions and on the other hand, a reduced installation effort is achieved.
  • valve as a valve body has a floating body whose density is smaller than the density of oil and by a rising from the crankcase ago oil level in the oil return channel in his Closed position against a valve seat can be raised, and that the weight of the valve body and the dimensions of the valve body surrounding the valve channel are coordinated so that upon reaching a predetermined speed of a gas flow in the valve passage in the direction of the crankcase to the separator housing the valve body by the gas flow and on the gas pressure difference acting on the valve body in its closed position against the valve seat can be raised.
  • the invention provides an oil mist separator whose valve combines two valve functions, namely the function of a float valve and the function of a check valve.
  • the function of the float valve always comes into play when, due to unfavorable pressure conditions, oil is forced out of the crankcase of the internal combustion engine through the oil return channel upwards in the direction of the separator housing.
  • the valve body As soon as the rising oil level reaches the valve body, it floats on the oil and is thereby brought into sealing contact with its valve seat, whereby the valve closes.
  • oil from the crankcase at most to the valve, but not further, in particular not in the clean gas region of the separator get.
  • valve Since only a single valve is required to achieve the two valve functions, advantageously only a correspondingly low parts and assembly effort is required. At the same time, due to its dual function, the valve ensures a particularly high operational reliability of the oil mist separator, which contributes to compliance with relevant emission limit values of the associated internal combustion engine.
  • valve body is a hollow ball and that the valve channel surrounding the valve channel is round in cross-section and forms a radial annular gap with the valve body in its open position.
  • valve body is functionally independent of position, which contributes significantly to reliable operation.
  • this results in a symmetrical loading of the valve body when it is flowed by gas from the crankcase, which contributes to a safe operation of the valve as a check valve.
  • valve in the oil return passage opens only in the presence of suitable pressure conditions, in particular when the associated internal combustion engine is at a standstill, an oil collecting space is expediently formed upstream of the valve in the separator housing.
  • the volume of the oil collection chamber should be selected according to the requirements in order to ensure the absorption of a sufficient amount of oil for all conceivable operational situations.
  • the invention proposes that a condensate return duct branches off from a operating point of the oil mist separator deepest point of the Rohgaskanals and that the condensate return duct downstream of the arranged in the oil return passage, first valve opens into the oil return passage.
  • the oil return channel is also used for the return of the condensate from the raw gas channel, so that a single line is sufficient as a combined oil and condensate return from the oil mist separator to the crankcase. This simplifies the connection of the ⁇ lnebelabscheiders to the associated internal combustion engine and reduces the number of necessary items.
  • a second valve is arranged, which opens the condensate return duct falls below a predetermined pressure difference between the two sides of the second valve. This ensures that the condensate collected before the second valve is discharged into the crankcase only in the presence of suitable pressure conditions, in particular when the associated internal combustion engine is at a standstill. An undesirable, disturbing gas flow through the condensate return duct against the condensate flow direction is avoided by the second valve.
  • the condensate return channel and the mouth of the condensate return channel in the oil return passage and possibly arranged in the condensate return passage second valve are integrated into the separator housing.
  • the oil mist separator for the purpose of oil and condensate return as simple as possible with the associated internal combustion engine, it is preferably provided that viewed in the oil flow direction downstream of the first valve portion of the oil return channel is formed as protruding from the separator housing hose or pipe connection piece. At the connecting piece then a flexible hose or a stable pipe can be connected with little effort, the other end is connected to the crankcase of the associated internal combustion engine.
  • the oil mist separator according to the present invention can be made variously and practically arbitrarily in terms of the means or mechanisms employed therein for separating oil mist from the crankcase ventilation gas.
  • a rotatably drivable rotor is arranged as a separating element in the separator housing. Even with such an active separation element, effective separation of oil mist from the crankcase ventilation gas is ensured, and as a rule, a rotor advantageously has a longer life in comparison with a fiber or nonwoven body, or even a lifetime component of the precipitator which never has to be renewed.
  • the separation element can be formed by at least one cyclone.
  • the separator housing is made in one piece with the exception of a top, removable cover or composed of several interconnected, such as welded or glued or latched, items composed.
  • a one-piece design is special inexpensive injection-molded plastic.
  • An embodiment of several, preferably as few as possible, individual parts is still inexpensive to manufacture and also allows such geometric designs that are not integrally represented.
  • the removable lid allows easy replacement of a separating element during maintenance of the oil mist separator.
  • FIG. 1 shows in a partial longitudinal section a first oil mist separator 1 with a separator housing 10 and a separating element 11 arranged therein.
  • the separating element 11 separates the interior of the oil mist separator 1 into a raw gas region 11.1 and a clean gas region 11.2.
  • the separation element 11 consists of a hollow cylindrical fiber or nonwoven body, which can be removed during maintenance of the oil mist separator 1 from the separator housing 10 and replaced by a new separation element 11.
  • the separator housing 10 is closed by a removable lid.
  • the separator housing 10 comprises a in FIG. 1 only partially visible upper housing part 10.1, in which the separating element 11 is arranged and fixed. Downwards closes to the upper housing part 10.1 a lower housing part 10.2 to which side, in FIG. 1 to the left, merges into a nozzle part 10.3, which contains a raw gas channel 12.
  • the nozzle part 10.3 is designed here as a hose connection piece, to which a crankcase ventilation gas supplying hose can be connected.
  • the return duct part 10.5 contains an oil return duct 14 and a condensate return duct 15 opening into the oil return duct 14.
  • the oil return duct 14 merges into a connecting pipe 19, to which an oil and condensate can be connected to the oil sump or the crankcase of the associated internal combustion engine.
  • an oil collecting gutter 10.4 Radially outside of the separation element 11 is located in the separator housing 10, an oil collecting gutter 10.4, the at least one in FIG. 1 invisible connection opening is connected to a right in the housing lower part 10.2 provided oil collecting space 16.
  • the oil collection chamber 16 goes down into an oil return passage 14, in the course of which a valve 2 is arranged.
  • this crankcase ventilation gas which is charged with oil mist and is supplied through the raw gas duct 12 from the crankcase of an associated internal combustion engine, first passes into the raw gas region 11.1 located in the interior of the separation element 11. From there, the gas flows through the separation element 11 in the radial direction from the inside to the outside and enters as a cleared of oil mist clean gas in the clean gas area 11.2 radially outside of the separation element 11 a. From there, the clean gas is discharged via a clean gas channel not visible in the drawing, usually in the intake tract of the internal combustion engine.
  • the separated in the separation element 11 from the gas flow oil passes under gravity within the separation element 11 down and passes from the separation element 11 into the oil collection channel 10.4 over. From the oil collecting channel 10.4, the separated oil continues to flow under gravity into the oil collection chamber 16 and collects in this. Another flow of the oil is prevented here in the operation of the associated internal combustion engine, because the valve 2 assumes its closed position in the oil return passage 14, in which its valve body 20 bears sealingly against the associated valve seat 21.
  • valve 2 Under two conditions, namely a) when there is a gas pressure difference between the two sides of the valve 2, which is able to lift the designed as a hollow ball, correspondingly lightweight valve body 20 and into contact with the valve seat 21st or b) when oil in the oil return passage 14 from the crankcase of the associated internal combustion engine rises up to the valve 2 and the hollow ball forming the valve body 20 floats on the oil and is brought into abutment with the valve seat 21.
  • the valve 2 thus combines in itself the functions of a check valve and a float valve.
  • the valve 3 in the condensate return channel 15 is designed here as a mushroom valve with a valve body made of an elastomer. Also, the valve 3 is during operation of the associated internal combustion engine in its closed position, so that in the raw gas channel 12 already precipitated condensate in the condensate return passage 15 and the valve 3 upstream condensate collection chamber 17 collects.
  • FIG. 2 shows in an enlarged sectional view, also in longitudinal section, the two valves 2 and 3 in their closed state.
  • the valve body 20 of the first valve 2 is formed by a hollow ball, so it has a low weight.
  • the weight of the valve body 20 and the extent of the valve body 20 receiving valve channel 22 are coordinated so that at a certain, specifiable speed overflowing gas flow through the oil return passage 14 in the direction of the crankcase to ⁇ lnebelabscheider, so according to the drawing from the bottom up, the gas flow and the force acting on the valve body 20 pressure difference on the valve body 20 exert a force sufficient to lift the valve body 20 and in the in FIG. 2 shown sealing system to bring the valve seat 21.
  • the hollow ball forming the valve body 20 is lighter than oil, so that it floats on an oil level that may rise through the oil return channel 14 and into the oil level FIG. 2 shown closed position, in which the valve body 20 abuts the associated sealing seat 21.
  • the second valve 3 is located in FIG. 2 also in closed position.
  • the mushroom-shaped valve body 30 covers two valve channels 32, which connect the condensate collecting space 17 with the condensate return channel 15. If suitable pressure conditions are present, in particular if at standstill of the internal combustion engine on both sides of the valve 3, an equal pressure, in particular atmospheric pressure, is present, the weight of accumulated in the condensate collecting space 17 condensate in a position to deform the valve body 30 so that a condensate drain through the valve channels 32 is allowed past the valve body 30.
  • the valve body 30 is an elastomeric body having a predetermined flexibility, elasticity and self-restoring force. For ease of assembly of the valve body 30 is in a valve channels 32 having wall within the housing base 10.2 locked. Instead of the mushroom valve, for example, a leaf or tongue valve can be used.
  • FIG. 3 shows in the same representation as the FIG. 2 the same section of the ⁇ lnebelabscheider with the two valves 2 and 3, now the valve 2 is in its open position.
  • the valve body 20 In this open position, the valve body 20 is within the valve channel 22 downwardly away from the valve seat 21 and there is an annular gap 23 between the outer periphery of the valve body 20 and the inner circumference of the valve channel 22 free, through which an outflow of oil collected in the oil collection chamber 16 below Gravity effect down into the oil return passage 14 is made possible.
  • the valve body 20 is held by a not quantified stop, so that a further movement of the valve body 20 down is not possible.
  • valve 3 is in FIG. 3 again shown in its closed position, the valve body 30 of the valve 3 assumes due to its own restoring force as soon as the condensate has flowed out of the condensate collection chamber 17 through the valve channels 32 and the valve body 30 is relieved of the weight of the condensate.
  • the upper housing part 10.1, the lower housing part 10.2 and that return duct part 10.5 are in the example shown, the ⁇ lnebelabscheiders 1 each one-piece injection molded parts made of plastic or die castings made of light metal, which allows cost-effective mass production.
  • FIG. 4 shows in a partial longitudinal section a second oil mist separator 1, also with a separator housing 10 and a separating element arranged therein 11.
  • the separation element 11 consists in the second embodiment shown here of a rotatably mounted, rotatably drivable in a conventional manner rotor, which forms a Tellerstapelseparator.
  • the separation element 11 in the form of the rotor is here as a rule a service life component of the oil mist separator 1 and must at most be removed from the separator housing 10 in the event of unexpected damage and replaced by a new separation element 11, ie by a new rotor.
  • At his in FIG. 4 not visible top is to the separator housing 10 is closed by a removable lid.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Claims (10)

  1. Séparateur de vapeur d'huile (1) d'un dispositif de purge de vilebrequin d'un moteur à combustion interne, avec un logement de séparateur (10), avec un canal de gaz brut (12) conduisant du gaz brut du vilebrequin du moteur à combustion interne dans une région de gaz brut (11.1) du séparateur (1), avec un canal de gaz pur évacuant du gaz pur d'une région de gaz pur (11.2) du séparateur (1) et avec un canal de recyclage d'huile (14) ramenant de l'huile séparée du gaz de purge de vilebrequin dans le vilebrequin du moteur à combustion interne dans le parcours duquel une soupape (2) est disposée, laquelle ouvre le canal de recyclage d'huile (14) en cas de dépassement par le bas d'une différence de pression prédéfinie entre les deux côtés de la soupape (2),
    caractérisé en ce
    - que la soupape (2) présente un corps flottant comme corps de soupape (20) dont la densité est inférieure à la densité d'huile et qui peut être soulevé par un niveau d'huile montant depuis le vilebrequin dans le canal de recyclage d'huile (14) dans sa position fermée contre un siège de soupape (21), et
    - que le poids du corps de soupape (20) et les dimensions du canal de soupape (22) entourant le corps de soupape (20) sont adaptés les uns aux autres de sorte que lors de l'atteinte d'une vitesse prédéfinie d'un courant de gaz dans le canal de soupape (22) en direction du vilebrequin vers le logement de séparateur (10), le corps de soupape (20) peut être soulevé par le courant de gaz et une différence de pression de gaz agissant sur le corps de soupape (20) dans sa position fermée contre le siège de soupape (21).
  2. Séparateur de vapeur d'huile selon la revendication 1, caractérisé en ce que le corps de soupape (20) est une bille creuse, et que le canal de soupape (22) entourant le corps de soupape (20) est rond en coupe transversale et forme un passage annulaire radial (23) avec le corps de soupape (20) dans sa position ouverte.
  3. Séparateur de vapeur d'huile selon la revendication 1 ou 2, caractérisé en ce qu'un espace collecteur d'huile (16) est réalisé en amont de la soupape (2) dans le logement de séparateur (10).
  4. Séparateur de vapeur d'huile selon une des revendications 1 à 3, caractérisé en ce qu'un canal de recyclage de condensat (15) est dérivé d'un endroit du canal de gaz brut (12) le plus profond en position de service du séparateur de vapeur d'huile (1) et que le canal de recyclage de condensat (15) débouche en aval de la première soupape (2) disposée dans le canal de recyclage d'huile (14) dans le canal de recyclage d'huile (14).
  5. Séparateur de vapeur d'huile selon la revendication 4, caractérisé en ce qu'une seconde soupape (3) est disposée dans le canal de recyclage de condensat (15), laquelle ouvre le canal de recyclage de condensat (15) en cas de dépassement par le bas d'une différence de pression prédéfinie entre les deux côtés de la seconde soupape (3).
  6. Séparateur de vapeur d'huile selon la revendication 4 ou 5, caractérisé en ce que le canal de recyclage de condensat (15) et l'embouchure (18) du canal de recyclage de condensat (15) dans le canal de recyclage d'huile (14) et la seconde soupape (3) éventuellement disposée dans le canal de recyclage de condensat (15) sont intégrés dans le logement de séparateur (10).
  7. Séparateur de vapeur d'huile selon la revendication 5 ou 6, caractérisé en ce qu'un espace collecteur de condensat (17) est réalisé en amont de la seconde soupape (3) dans le logement de séparateur (10).
  8. Séparateur de vapeur d'huile selon une des revendications 1 à 7, caractérisé en ce qu'une section du canal de recyclage d'huile (14) située en aval de la première soupape (2) vue dans le sens d'écoulement d'huile est réalisée en tant que raccord de tuyau ou de tube (19) dépassant du logement de séparateur (10).
  9. Séparateur de vapeur d'huile selon une des revendications 1 à 8, caractérisé en ce qu'au moins un corps en fibres ou non tissé ou un rotor pouvant être entraîné en rotation ou au moins un cyclone est disposé en tant qu'élément de séparation (11) dans le logement de séparateur (10).
  10. Séparateur de vapeur d'huile selon une des revendications 1 à 9, caractérisé en ce que le logement de séparateur (10) est conçu d'une pièce à l'exception d'un couvercle amovible du côté supérieur ou est composé de plusieurs parties individuelles (10.1, 10.2, 10.5) reliées ensemble, comme soudées ou collées ou encliquetées.
EP11719207.0A 2010-04-15 2011-04-13 Séparateur de brouillard d'huile d'un dispositif de purge de carter de vilebrequin d'un moteur à combustion interne Active EP2558690B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010027783A DE102010027783A1 (de) 2010-04-15 2010-04-15 Ölnebelabscheider einer Kurbelgehäuseentlüftungseinrichtung einer Brennkraftmaschine
PCT/EP2011/055782 WO2011141258A1 (fr) 2010-04-15 2011-04-13 Séparateur de brouillard d'huile d'un dispositif de purge de carter de vilebrequin d'un moteur à combustion interne

Publications (2)

Publication Number Publication Date
EP2558690A1 EP2558690A1 (fr) 2013-02-20
EP2558690B1 true EP2558690B1 (fr) 2015-10-28

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EP (1) EP2558690B1 (fr)
DE (1) DE102010027783A1 (fr)
WO (1) WO2011141258A1 (fr)

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DE202016102827U1 (de) * 2016-05-27 2017-09-18 3Nine Ab Ölabscheider
DE102017201896A1 (de) 2017-02-07 2018-08-09 Mahle International Gmbh Verfahren zum Entlüften eines Kurbelgehäuses einer Brennkraftmaschine und zugehörige Einrichtung

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DE102010062321B4 (de) * 2010-12-02 2023-10-12 Elringklinger Ag Ölabscheidereinheit
DE102014220811B4 (de) 2014-10-14 2023-02-16 Elringklinger Ag Drainagevorrichtung
CN108301935B (zh) * 2018-03-28 2024-02-20 潍柴动力股份有限公司 油气分离器壳体及柴油车
DE102019004377A1 (de) * 2019-06-19 2020-12-24 Deutz Aktiengesellschaft Ölrücklaufventil für ein Kurbelgehäuseentlüftungssystem
CH717661A1 (de) * 2020-07-15 2022-01-31 Liebherr Machines Bulle Sa Aerosolseparator zum Abscheiden von Aerosolen in einem Blow-by-Gas.

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DE60126270T2 (de) * 2000-05-24 2007-11-08 Parker-Hannifin Corp., Cleveland Sicherheitsabschlussventil für kurbelgehäuse-entlüftungs-steuerungsvorrichtung
EP1394372B1 (fr) * 2002-08-22 2007-04-11 Perkins Engines Company Limited Soupape de coupage et housse combinés pour le dispositif de degasage d'un moteur à combustion interne
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FR2932843B1 (fr) * 2008-06-24 2010-08-20 Mann & Hummel Gmbh Dispositif de purge d'huile pour deshuileur de moteur en particulier de moteur de vehicule automobile ainsi que procede de fabrication d'un tel dispositif.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202016102827U1 (de) * 2016-05-27 2017-09-18 3Nine Ab Ölabscheider
DE102017201896A1 (de) 2017-02-07 2018-08-09 Mahle International Gmbh Verfahren zum Entlüften eines Kurbelgehäuses einer Brennkraftmaschine und zugehörige Einrichtung
DE102017201896B4 (de) 2017-02-07 2022-10-20 Mahle International Gmbh Verfahren zum Entlüften eines Kurbelgehäuses einer Brennkraftmaschine und zugehörige Einrichtung

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WO2011141258A1 (fr) 2011-11-17
DE102010027783A1 (de) 2011-10-20

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