EP2525055A2 - Moteur à combustion interne - Google Patents

Moteur à combustion interne Download PDF

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Publication number
EP2525055A2
EP2525055A2 EP12163136A EP12163136A EP2525055A2 EP 2525055 A2 EP2525055 A2 EP 2525055A2 EP 12163136 A EP12163136 A EP 12163136A EP 12163136 A EP12163136 A EP 12163136A EP 2525055 A2 EP2525055 A2 EP 2525055A2
Authority
EP
European Patent Office
Prior art keywords
lubricant
combustion engine
internal combustion
gas
crankcase ventilation
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.)
Withdrawn
Application number
EP12163136A
Other languages
German (de)
English (en)
Other versions
EP2525055A3 (fr
Inventor
Wolfgang Dr. Semet
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP2525055A2 publication Critical patent/EP2525055A2/fr
Publication of EP2525055A3 publication Critical patent/EP2525055A3/fr
Withdrawn legal-status Critical Current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
    • F01M13/02—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
    • 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
    • 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
    • F01M1/00—Pressure lubrication
    • F01M1/12—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
    • F01M2001/126—Dry-sumps
    • 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
    • F01M2013/005—Layout of crankcase breathing systems having one or more deoilers
    • F01M2013/0061—Layout of crankcase breathing systems having one or more deoilers having a plurality of deoilers
    • F01M2013/0072—Layout of crankcase breathing systems having one or more deoilers having a plurality of deoilers in series

Definitions

  • the invention relates to an internal combustion engine having a device for separating lubricant from a crankcase ventilation gas of the internal combustion engine with the features of the preamble of patent claim 1.
  • Object of the present invention is to show for an internal combustion engine with a dry sump lubrication means for separating lubricant from the crankcase ventilation gas of the internal combustion engine.
  • the lubricant consumption of the engine is reduced and thus the exhaust emissions improved, reduces the burden of emissions-influencing components (catalyst and lambda probe) by deposits and the risk of complete engine damage avoided by Glühzünditch due to the lubricant content in the intake air.
  • the lubricant delivery device according to claim 2 can be operated with lubricant itself or a gas.
  • the already existing lubricant pump of the In operation of the lubricant delivery device with lubricant Internal combustion engine are used. For this purpose, a part of the lubricant flow is used.
  • an additional gas delivery device is to be provided, for example an air pump.
  • FIG. 1 schematically an internal combustion engine 1 with a device for separating lubricant from a crankcase ventilation gas of the internal combustion engine 1 is shown.
  • the internal combustion engine 1 consists essentially of a not numbered cylinder head with an inlet and an outlet valve, an intake pipe and an exhaust pipe, and a in a cylinder of the crankcase 1 'driven by a crank drive piston. Flow directions of intake gas and exhaust gas are shown symbolically by arrows. In the lower part of the crankcase 1 ', a dry sump lubrication for the internal combustion engine 1 is arranged.
  • the lubricant is carried in a separate container and transported by a pressure pump (lubricant pump 7) to the lubrication points.
  • the dripping lubricant In contrast to the pressure circulation lubrication by means of a second return pump (lubricant delivery device 6) sucked out of the lubricant sump and conveyed back into the lubricant reservoir.
  • the lubricant delivery device 6 has a higher delivery rate than the lubricant pump 7 in order to reliably pump the lubricant from the crankcase 1 'into the lubricant reservoir in every driving situation.
  • blow-by gas mixed with lubricant is supplied first through a crankcase ventilation line 2 in the present exemplary embodiment to a second lubricant separator 9, a lubricant coarse separator.
  • Lubricant precipitated in the second lubricant separator 9 is returned to the crankcase 1 'through a second lubricant return line 10.
  • These roughly pre-cleaned blow-by gases are then passed through the crankcase ventilation line 2 on to a lubricant separator 3, a fine separator, such as a cyclone separator.
  • a fine separator such as a cyclone separator.
  • the thus cleaned blow-by gas is now returned through the crankcase ventilation line 2 back to the intake of the internal combustion engine 1 for combustion.
  • the lubricant which collects at the lubricant outlet 4 of the lubricant separator 3, is returned to the crankcase 1 'via a lubricant return line 5.
  • a lubricant delivery device 6 is provided in the lubricant return line 5.
  • this lubricant delivery device 6 is an ejector pump.
  • This lubricant conveyor 6 in the form of a suction jet pump, as shown in the present embodiment, directly operable with the lubricant of the internal combustion engine 1. In another embodiment, it can also be operated via an additional air pump with gas.
  • the supply of the internal combustion engine 1 anyway existing lubricant pump 7 is used.
  • a partial lubricant flow of the lubricant pump 7 is used to the internal combustion engine 1, d. H. a partial lubricant flow is conveyed through a conduit 8 for operation of the lubricant delivery device 6.
  • Fig.2 shows a section through a known suction jet pump or lubricant conveying device.
  • nozzle 8 is a nozzle for the line 8 for the partial lubricant flow coming from the lubricant pump 7 (the nozzle 8 is part of the line 8). At this nozzle 8 lubricant is introduced into the lubricant conveying device 6, an insertion direction is shown with an arrow and labeled with "inlet pressure oil”.
  • the lubricant return line 5 with a nozzle is referred to the lubricant return line 5 can be arranged (also the nozzle 5 forms part of the lubricant return line 5).
  • the flow direction is again shown by an arrow and labeled with "inlet return oil / blow-by gas”.
  • outlet nozzle 11 is designated, at which the subsidized lubricant, the lubricant delivery device 6 exits again.
  • the flow direction is again indicated by an arrow and labeled with "outlet pressure oil” and "return oil / blow-by gas”.
  • a pressure ratio is built up by the partial lubricant conveying flow (pressurized oil) inside the lubricant conveying device 6, so that backflow of blow-by gases toward the lubricant separator 3 becomes impossible.
  • a suction jet pump for conveying the return lubricant from the lubricant separator 3 reduces the lubricant consumption of the internal combustion engine 1 and thus improves the exhaust emissions, reduces the load on the emission-influencing components (catalytic converter and lambda probe) through deposits and reduces the risk of complete engine damage Ignition ignitions due to the lubricant content in the intake air avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
EP12163136.0A 2011-05-16 2012-04-04 Moteur à combustion interne Withdrawn EP2525055A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011075933A DE102011075933A1 (de) 2011-05-16 2011-05-16 Brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP2525055A2 true EP2525055A2 (fr) 2012-11-21
EP2525055A3 EP2525055A3 (fr) 2014-11-05

Family

ID=46025453

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12163136.0A Withdrawn EP2525055A3 (fr) 2011-05-16 2012-04-04 Moteur à combustion interne

Country Status (2)

Country Link
EP (1) EP2525055A3 (fr)
DE (1) DE102011075933A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015224566A1 (de) * 2015-12-08 2017-06-08 Mahle International Gmbh Pumpvorrichtung
CN110397486A (zh) * 2019-09-03 2019-11-01 山东华盛农业药械有限责任公司 带有转子泵的四冲程汽油机润滑结构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016220658A1 (de) 2016-10-21 2018-04-26 Bayerische Motoren Werke Aktiengesellschaft Ölabscheidevorrichtung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005018132U1 (de) 2005-11-17 2007-03-29 Hengst Gmbh & Co.Kg Brennkraftmaschine mit einer Einrichtung zum Abscheiden von Öl aus dem Kurbelgehäuseentlüftungsgas

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1995271U (de) * 1967-01-26 1968-10-24 Daimler Benz Ag Vorrichtung zur entlueftung des triebwerkraumes von brennkraftmaschinen.
US3824973A (en) * 1973-06-01 1974-07-23 Gen Motors Corp Cylinder head oil drain system
JP2689655B2 (ja) * 1989-12-05 1997-12-10 株式会社日本自動車部品総合研究所 ブローバイガス還元装置
DE10062483A1 (de) * 2000-12-14 2002-06-20 Deutz Ag Filter zur Reinigung von Kurbelgehäuseentlüftungsgasen einer Brennkraftmaschine
US7699029B2 (en) * 2007-07-26 2010-04-20 Cummins Filtration Ip, Inc. Crankcase ventilation system with pumped scavenged oil
DE102009006274A1 (de) * 2009-01-27 2010-07-29 Dr.Ing.H.C.F.Porsche Aktiengesellschaft Einrichtung zum Rückfördern von Schmierstoff aus einem Zylinderkopf einer Brennkraftmaschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005018132U1 (de) 2005-11-17 2007-03-29 Hengst Gmbh & Co.Kg Brennkraftmaschine mit einer Einrichtung zum Abscheiden von Öl aus dem Kurbelgehäuseentlüftungsgas

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015224566A1 (de) * 2015-12-08 2017-06-08 Mahle International Gmbh Pumpvorrichtung
CN110397486A (zh) * 2019-09-03 2019-11-01 山东华盛农业药械有限责任公司 带有转子泵的四冲程汽油机润滑结构

Also Published As

Publication number Publication date
EP2525055A3 (fr) 2014-11-05
DE102011075933A1 (de) 2012-11-22

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