WO2009081260A1 - Dispositif de séparation d'huile - Google Patents

Dispositif de séparation d'huile Download PDF

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Publication number
WO2009081260A1
WO2009081260A1 PCT/IB2008/003538 IB2008003538W WO2009081260A1 WO 2009081260 A1 WO2009081260 A1 WO 2009081260A1 IB 2008003538 W IB2008003538 W IB 2008003538W WO 2009081260 A1 WO2009081260 A1 WO 2009081260A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
gas
blow
cover
separation device
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.)
Ceased
Application number
PCT/IB2008/003538
Other languages
English (en)
Inventor
Tatsuhiro Terada
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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 Toyota Motor Corp filed Critical Toyota Motor Corp
Publication of WO2009081260A1 publication Critical patent/WO2009081260A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M13/0405—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil arranged in covering members apertures, e.g. caps
    • 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
    • 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
    • F01M2013/0433—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a deflection device, e.g. screen

Definitions

  • the invention relates to an oil separation device.
  • blow-by gas that contains fuel leaks from a combustion chamber into a crankcase through a gap between an inner wall surface of a cylinder and piston rings while the engine is operating. For this reason, a blow-by gas process is performed, in which the gas that contains fuel is returned to an intake passage and disposed of.
  • an oil separation device shown in Japanese Patent Application Publication No. 2006-336595 JP-A-2006-336595
  • JP-A-2006-336595 is used to separate oil from the blow-by gas that is caused to flow from the crankcase to an intake passage.
  • the oil separation device is provided with a cover that is attached to a side wall of a cylinder block of the internal combustion engine and defines, between the cover and the side wall, an introduction space into which the blow-by gas is introduced.
  • the oil separation device is provided with a separator, provided on the cover, that takes in the blow-by gas introduced into the introduction space and causes the flow of the gas to hit a separation wall to cause the oil in the gas to adhere to the separation wall, so that the oil is separated from the gas.
  • a separator provided on the cover, that takes in the blow-by gas introduced into the introduction space and causes the flow of the gas to hit a separation wall to cause the oil in the gas to adhere to the separation wall, so that the oil is separated from the gas.
  • the invention provides an oil separation device that reduces the possibility that the oil that adheres to the separation wall remains on the separation wall and sludge is formed.
  • a first aspect of the invention includes: a cover that is attached to a side wall of a cylinder block of an internal combustion engine and defines, between the cover and the side wall, an introduction space into which blow-by gas is introduced; a separator, provided on the cover, that takes in the blow-by gas introduced into the introduction space and causes flow of the blow-by gas to hit a separation wall to cause the oil in the blow-by gas to adhere to the separation wall, so that the oil is separated from the blow-by gas; and a support portion, formed on the cover, that supports an accessory component of the internal combustion engine.
  • the accessory component of the engine vibrates with large amplitudes in a swinging manner about the center at the connection point at which the accessory component is connected to the internal combustion engine.
  • such vibration of the accessory component is transmitted, through the support portion on the cover of the oil separation device, to the separation wall of the separator provided on the cover, so that the separation wall vibrates and the oil that adheres to the separation wall therefore smoothly drops.
  • the possibility that oil remains on the separation wall is reduced, and the formation of sludge due to deterioration of the remaining oil on the separation wall is therefore suppressed.
  • the support portion may support an intake manifold connected to a cylinder head of the internal combustion engine.
  • FIG. 1 is a perspective view showing a cylinder block of an internal combustion engine provided with an oil separation device of an embodiment and a standing wall portion of the oil separation device;
  • FIG 2 is a perspective view of a cylinder block, showing a state in which an attached member of the oil separation device is attached to the standing wall portion;
  • FIG. 3 is a perspective view showing the attached member of the oil separation device
  • FIG. 4 is a schematic diagram showing an internal structure of a separator formed on the attached member
  • FIG. 5 is a schematic diagram showing a state in which an intake manifold of the internal combustion engine is attached to a cover of the attached member.
  • FIGS. 1 to 5 An embodiment of the invention, which is an oil separation device that separates oil from blow-by gas in a blow-by gas process in an internal combustion engine will be described below with reference to FIGS. 1 to 5.
  • the oil separation device includes: a frame-like standing wall portion 2 that is formed on a side wall of a cylinder block 1 of the internal combustion engine shown in FIG 1 and protrudes substantially perpendicularly to the side wall; and an attached member 3 that is attached to the standing wall portion 2 with bolts or the like as shown in FIG. 2.
  • the inside of the frame-like standing wall portion 2 is an introduction space 4 shown in FIG 1, and blow-by gas present in a crankcase of the internal combustion engine is introduced into the introduction space 4 through passages 12 formed in the cylinder block 1.
  • FIG. 3 is a perspective view of the attached member 3 when viewed from the introduction space 4 side (FIG. 1).
  • a separator 5 that takes in the blow-by gas introduced into the introduction space 4 and separates the oil in the blow-by gas from the gas.
  • An inertial impaction-type separator for example, is used as such a separator 5 in this embodiment.
  • the blow-by gas from which oil is separated by the separator 5 is discharged from the introduction space 4 and returned to the intake passage of the internal combustion engine.
  • a cover 3a that is attached, with bolts or the like, to the standing wall portion 2 formed on the side wall of the cylinder block 1 (FIG. 1) is also formed in the attached member 3.
  • the cover 3a defines the introduction space 4 between the side wall of the cylinder block 1 and the cover 3a in the inside of the standing wall portion 2, and closes the introduction space 4.
  • the separator 5 is provided on the cover 3a.
  • the cover 3a of the attached member 3 is provided with a PCV valve 6 of which the degree of opening is adjusted Io vary the flow rate at which blow-by gas is discharged when the blow-by gas is discharged from the introduction space 4 and returned to the intake passage after oil is separated from the blow-by gas by the separator
  • the PCV valve 6 provided on the attached member 3 is connected to the separator 5 via a passage formed in the attached member 3, and is also connected to the intake passage of the internal combustion engine via a hose or the like.
  • blow-by gas from which oil has been separated by the separator 5 is discharged from the introduction space 4 and returned to the intake passage of the internal combustion engine through the passage formed in the attached member 3, the PCV valve 6, the hose etc.
  • the degree of opening of the PCV valve 6 is adjusted, the cross section of the passage of the blow-by gas that flows from the passage formed in the attached member 3 into the hose etc. varies, and in this way, the flow rate at which the blow-by gas is discharged from the introduction space 4 is varied.
  • FIG. 4 is a schematic view showing an internal structure of the separator 5 of the attached member 3 (FIG. 3).
  • a speed-increasing passage 7 that communicates with the introduction space 4 and through which blow-by gas flows from the space 4 into the separator 5, and a separation wall 8 that the- flow of the blow-by gas flowing through the speed-increasing passage 7 is caused to hit.
  • the portion of the speed-increasing passage 7 on the separation wall 8 side has a diameter smaller than the portion thereof on the introduction space 4 side, and the speed-increasing passage 7 is extended substantially perpendicularly to the separation wall 8.
  • the speed-increasing passage 7 increases the speed of flow of the blow-by gas introduced from the introduction space 4, and the direction of the flow of the gas is made substantially perpendicular to the wall surface of the separation wall 8.
  • the flow of the blow-by gas taken into the separator 5 is increased in speed by the speed-increasing passage 7 and caused to hit the separation wall 8, so that oil in the blow-by gas adheres to the separation wall 8. Because the oil in the blow-by gas adheres to the separation wall 8 in this way, oil is separated from the gas.
  • a structure for reducing the possibility that the oil that adheres to the separation wall 8 does not drop and remains on the separation wall 8 is adopted, whereby the formation of sludge is suppressed.
  • the structure for reducing the possibility that oil remains on the separation wall 8 will be described in detail below with reference to FIGS. 2 and 5.
  • stays 9 protruding in the direction away from the side wall of the cylinder block 1, that support an accessory component of the internal combustion engine that is attached to the same engine are formed on the cover 3a.
  • an accessory component is an intake manifold 11 that is attached to a cylinder head 10 of the internal combustion engine as shown in FIG. 5, for example.
  • the intake manifold 11 is attached to the stays 9 formed on the cover 3a with bolts or the like, and supported by the stays 9. A hole into which the bolt is screwed is formed at the tip of each of the stays 9.
  • the stays 9 are provided at a lower portion of the cover.
  • the two rod-like stays 9 are provided at substantially the same level, so that the intake manifold is stably supported.
  • the stays 9 are formed integrally with the cover 3a, which leads to a high strength and makes it easy to form the stays 9.
  • the accessory component of the engine such as the intake manifold 11
  • Such vibration of the intake manifold 11 is transmitted to the separation wall 8 of the separator 5 provided on the cover 3a through the stays 9 on the cover 3a of the oil separation device, so that the separation wall 8 of the separator 5 vibrates and the oil that adheres to the separation wall 8 therefore smoothly drops.
  • the possibility that oil remains on the separation wall 8 is reduced, and the formation of sludge due to deterioration of the remaining oil on the separation wall 8 is therefore suppressed.
  • the intake manifold 11 is illustrated as the accessory component of the internal combustion engine that is supported by the stays 9 on the cover 3a, instead of the intake manifold 11, another component, such as a water pump, an alternator, an oil pump for a power steering system, or a compressor for an air conditioner, may be supported by the stays 9.
  • an inertial impaction-type separator is illustrated as the separator 5 of the attached member 3
  • a labyrinth separator may be used.
  • blow-by gas is passed through a winding passage and the flow of the blow-by gas is caused to hit the wall surface of the winding passage, so that the oil in the blow-by gas is caused to adhere to the wall surface for separation from the gas.

Landscapes

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

Abstract

L'invention porte sur un dispositif de séparation d'huile qui comprend : un capot (3a) qui est fixé à une paroi latérale d'un bloc-cylindres (1) du moteur à combustion interne et définit, entre le capot (3a) et la paroi latérale, un espace d'introduction (4) dans lequel du gaz perdu est introduit ; un séparateur (5), disposé sur le capot, qui aspire le gaz perdu introduit dans l'espace d'introduction et amène l'écoulement du gaz perdu à heurter une paroi de séparation pour amener l'huile dans le gaz perdu à adhérer à la paroi de séparation, de telle sorte que l'huile est séparée du gaz perdu ; une partie de support (9), formée sur le capot, qui supporte un composant accessoire du moteur à combustion interne. Ainsi, la vibration de composant accessoire est transmise, par l'intermédiaire de la partie de support, à la paroi de séparation du séparateur, de telle sorte que l'huile qui a adhéré à la paroi de séparation tombe régulièrement.
PCT/IB2008/003538 2007-12-21 2008-12-18 Dispositif de séparation d'huile Ceased WO2009081260A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007330567A JP2009150350A (ja) 2007-12-21 2007-12-21 オイル分離装置
JP2007-330567 2007-12-21

Publications (1)

Publication Number Publication Date
WO2009081260A1 true WO2009081260A1 (fr) 2009-07-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/003538 Ceased WO2009081260A1 (fr) 2007-12-21 2008-12-18 Dispositif de séparation d'huile

Country Status (2)

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JP (1) JP2009150350A (fr)
WO (1) WO2009081260A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2989994A1 (fr) * 2012-04-27 2013-11-01 Peugeot Citroen Automobiles Sa Support d'accessoire
FR2991377A1 (fr) * 2012-06-04 2013-12-06 Peugeot Citroen Automobiles Sa Moteur thermique comprenant un passage des gaz de carter, qui passe dans un support moteur

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5927935B2 (ja) * 2012-01-24 2016-06-01 トヨタ自動車株式会社 ブローバイガス還元装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2346736A (en) * 1940-08-14 1944-04-18 Continental Motors Corp Crankcase ventilating system
EP0926319A1 (fr) * 1997-12-23 1999-06-30 FIAT AUTO S.p.A. Dispositif pour séparer les gaz de carter d'un moteur à combustion interne et liaison pour ces gaz
DE19913176A1 (de) * 1999-03-24 2000-09-28 Fev Motorentech Gmbh Motorblock mit Ölabscheidung im Entlüftungsbereich
EP1130225A1 (fr) * 1999-09-03 2001-09-05 Honda Giken Kogyo Kabushiki Kaisha Structure de chambre de reniflard de moteur a combustion interne
EP1447532A2 (fr) * 2003-02-17 2004-08-18 Nifco Inc. Dispositif de separation de l'huile present dans le gas du carter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5981719U (ja) * 1982-11-24 1984-06-02 本田技研工業株式会社 内燃機関のブロ−バイガス還流装置の通路構造
JP4364360B2 (ja) * 1999-09-05 2009-11-18 本田技研工業株式会社 ブローバイガス還元装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2346736A (en) * 1940-08-14 1944-04-18 Continental Motors Corp Crankcase ventilating system
EP0926319A1 (fr) * 1997-12-23 1999-06-30 FIAT AUTO S.p.A. Dispositif pour séparer les gaz de carter d'un moteur à combustion interne et liaison pour ces gaz
DE19913176A1 (de) * 1999-03-24 2000-09-28 Fev Motorentech Gmbh Motorblock mit Ölabscheidung im Entlüftungsbereich
EP1130225A1 (fr) * 1999-09-03 2001-09-05 Honda Giken Kogyo Kabushiki Kaisha Structure de chambre de reniflard de moteur a combustion interne
EP1447532A2 (fr) * 2003-02-17 2004-08-18 Nifco Inc. Dispositif de separation de l'huile present dans le gas du carter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2989994A1 (fr) * 2012-04-27 2013-11-01 Peugeot Citroen Automobiles Sa Support d'accessoire
FR2991377A1 (fr) * 2012-06-04 2013-12-06 Peugeot Citroen Automobiles Sa Moteur thermique comprenant un passage des gaz de carter, qui passe dans un support moteur

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