EP0690209A1 - Crankcase ventilation for internal combustion engines - Google Patents

Crankcase ventilation for internal combustion engines Download PDF

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Publication number
EP0690209A1
EP0690209A1 EP19950107896 EP95107896A EP0690209A1 EP 0690209 A1 EP0690209 A1 EP 0690209A1 EP 19950107896 EP19950107896 EP 19950107896 EP 95107896 A EP95107896 A EP 95107896A EP 0690209 A1 EP0690209 A1 EP 0690209A1
Authority
EP
European Patent Office
Prior art keywords
internal combustion
crankcase
outlet
ventilation
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.)
Ceased
Application number
EP19950107896
Other languages
German (de)
French (fr)
Inventor
Walter Trefz
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.)
Mann and Hummel GmbH
Original Assignee
Mann and Hummel GmbH
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
Priority to DE9410668U priority Critical
Priority to DE9410668U priority patent/DE9410668U1/en
Application filed by Mann and Hummel GmbH filed Critical Mann and Hummel GmbH
Publication of EP0690209A1 publication Critical patent/EP0690209A1/en
Ceased legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00Crankcase ventilating or breathing
    • F01M13/04Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M13/0405Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil arranged in covering members apertures, e.g. caps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00Crankcase ventilating or breathing
    • F01M13/02Crankcase ventilating or breathing by means of additional source of positive or negative pressure
    • F01M13/021Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
    • F01M13/022Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction
    • F01M13/023Control valves in suction conduit

Abstract

A crankcase ventilation system for an internal combustion engine is proposed. This comprises a ventilation line (2) starting from the crankcase, a liquid separator (3) arranged therein, a collecting space (7) for the separated liquid with an outlet (8) and a connection leading to the intake line of the internal combustion engine. In addition to the outlet, at least one further outlet (12) is provided, which is diametrically opposed to the first outlet (8). <IMAGE>

Description

  • The invention relates to a crankcase ventilation for internal combustion engines according to the preamble of the main claim and the preamble of the independent claim 2.
  • It is known to extract, filter and cool the oil vapor from the crankcase of an internal combustion engine in order to recover the oil.
  • DE-AS 12 68 902 describes a crankcase ventilation for internal combustion engines. A connecting line leads upwards from a ventilation opening on the crankcase to an intake port. A condensate separating chamber with a knitted filter is arranged in it, an outlet pipe with a shut-off valve leading out of the separating chamber. The separated oil flows back into the crankcase on the wall of the breather nozzle. At higher gas velocities in the vent, however, the oil is prevented from refluxing. It is pulled into the intake manifold by the gas flow and enters the combustion process.
  • It is therefore proposed in DE-OS 31 07 191 to additionally provide a drain line inside the ventilation line, through which the liquid is led from the collecting space into the crankcase. However, this drain line only works reliably when the liquid separator is in an exact horizontal position. However, the horizontal position is not always guaranteed in internal combustion engines for vehicles which are equipped with such a crankcase ventilation. Therefore, a large amount of liquid can accumulate in the collecting space, which is not reliably discharged. Here, too, this liquid is torn into the intake manifold at a higher gas velocity and thus enters the combustion process.
  • The object of the invention is therefore to provide a crankcase ventilation that also works reliably in internal combustion engines for vehicles.
  • This object is achieved on the basis of the respective preamble by the characterizing features of claims 1 or 2.
  • The advantage of the invention can be seen in the fact that the arrangement of a plurality of connections or drain lines ensures that the collected oil is reliably drained even when the liquid separator is in a tilted position.
  • In a further embodiment, it is proposed that the individual drain lines lead into a common line, which then extends back inside the ventilation line into the crankcase.
  • According to a further embodiment, it is provided to provide the trough for the separated liquid with connections to which the drain lines can be connected.
  • These and further features of preferred developments of the invention emerge from the claims and also from the description and the drawings, the individual features each individually or in groups in the form of Sub-combinations can be realized in the embodiment of the invention and in other fields and can represent advantageous and protectable versions for which protection is claimed here.
  • The invention is explained in more detail below using an exemplary embodiment.
  • The figure shows an oil separator of a crankcase ventilation for internal combustion engines.
  • As can be seen from the figure, the crankcase ventilation consists of a ventilation line 2 starting from a crankcase 1, a funnel-shaped liquid separator 3 with a separator pack 4 and a suction line 5 leading to the air inlet side of a piston machine (not shown). A suitably designed bottom sieve 6 forms in the liquid separator 3 a collecting space 7 for separated liquid in the form of an annular groove. This channel lies in the area of the transition of the liquid separator 3 into the ventilation line 2. A drain line 8 leads from this channel inside the ventilation line 2 back into the crankcase 1. As a result, the separated, back-flowing oil is separated from the upward venting gases and does not come into contact with them. If necessary, a hose 11, preferably made of an oil-resistant plastic, can be pushed onto the pipe end 10 of the drain line 8 in the area of the crankcase 1. The hose 11 leads into a flow-reduced zone within the crankcase 1.
  • A further drain line 12 is provided parallel to the first drain line 8. This is arranged diametrically opposite. Of course, there is the possibility, for example, to arrange three or four drain lines. This ensures that the liquid in the collecting space 7 differs from the horizontal in almost every one Layer flows out of the oil separator.
  • All drain lines open into a common drain line 13, which - as already mentioned - can be connected to a hose 11.
  • A valve 14 is arranged in the oil separator, which limits the negative pressure which reacts from the suction pipe. This valve consists of a valve seat 15, a rubber-elastic element 16 and a spring 17. At very high negative pressure in the suction line 5, the valve element 16 is moved downward against the spring force of the spring 17 and closes or reduces the passage cross section of the oil separator, so that an impermissibly high negative pressure cannot continue into the crankcase.
  • A membrane vent valve 19 is arranged in the cover 18 of the oil separator. This valve has the task of venting or venting the space located above the membrane 16.

Claims (4)

  1. Crankcase ventilation for internal combustion engines, comprising a ventilation line starting from the crankcase, a liquid separator arranged therein, a collecting space for the separated liquid with an outlet and a connection leading to the intake line of the internal combustion engine, characterized in that a further outlet (12) is provided, which is the first Outlet (8) faces diametrically.
  2. Crankcase ventilation for internal combustion engines, comprising a ventilation line extending from the crankcase, a liquid separator arranged therein, a collecting space for the separated liquid with an outlet and a connection leading to the intake line of the internal combustion engine, characterized in that at least two further outlet openings (12) are provided, which are connected to different positions of the collecting space (7) are arranged.
  3. Crankcase ventilation according to one of the preceding claims, characterized in that the outlet lines (8, 12) open into a common drain line (13).
  4. Crankcase ventilation according to one of the preceding claims, characterized in that the collecting space (7) has an annular groove and the drain lines (8, 12) are connected to outlet openings of the annular groove.
EP19950107896 1994-07-02 1995-05-24 Crankcase ventilation for internal combustion engines Ceased EP0690209A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE9410668U 1994-07-02
DE9410668U DE9410668U1 (en) 1994-07-02 1994-07-02 Crankcase for internal combustion engines

Publications (1)

Publication Number Publication Date
EP0690209A1 true EP0690209A1 (en) 1996-01-03

Family

ID=6910602

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950107896 Ceased EP0690209A1 (en) 1994-07-02 1995-05-24 Crankcase ventilation for internal combustion engines

Country Status (13)

Country Link
US (1) US5579744A (en)
EP (1) EP0690209A1 (en)
JP (1) JPH08170515A (en)
CN (1) CN1115828A (en)
BR (1) BR9502289A (en)
CA (1) CA2153027A1 (en)
CZ (1) CZ149995A3 (en)
DE (1) DE9410668U1 (en)
FI (1) FI953020A (en)
NO (1) NO951906L (en)
PL (1) PL309457A1 (en)
YU (1) YU44295A (en)
ZA (1) ZA9505001B (en)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19618413A1 (en) * 1996-05-08 1997-11-13 Mann & Hummel Filter Oil mist removal element for use in combustion engines
DE19704594A1 (en) * 1997-02-07 1998-08-13 Knecht Filterwerke Gmbh Lube oil filling line of an internal combustion engine with oil mist separator
US5853439A (en) 1997-06-27 1998-12-29 Donaldson Company, Inc. Aerosol separator and method
AU750384B2 (en) * 1997-11-13 2002-07-18 Gekko International L.C. Apparatus for the treatment of crankcase emissions materials in a positive crankcase ventilation system
US6000383A (en) * 1997-11-13 1999-12-14 Gekko International L.C. Apparatus for the treatment of crankcase emissions materials in a positive crankcase ventilation system
US6009846A (en) * 1998-03-05 2000-01-04 Walker, Jr.; Robert A. Combination air-filter/air-oil separator with integral vacuum regulator
US6752856B1 (en) 1999-04-29 2004-06-22 Caterpillar Inc. Feedback loop controlled multistage aerosol removal device
US6186128B1 (en) 1999-05-12 2001-02-13 Gekko International, L.C. Apparatus for treatment of crankcase emissions materials in a positive crankcase ventilation system
US6290739B1 (en) 1999-12-29 2001-09-18 Donaldson Company, Inc. Aerosol separator; and method
BR0017210A (en) * 2000-04-12 2003-07-29 Vortex Automotive Corp Process and apparatus for treating crankcase emissions from an internal combustion engine and apparatus and process for withdrawing fluid into the intake manifold of an internal combustion engine
US6345614B1 (en) * 2000-12-27 2002-02-12 Detroit Diesel Corporation Separator and oil trap for closed crankcase ventilator systems
US6520164B1 (en) * 2001-07-24 2003-02-18 Caterpillar Inc Crankcase ventilation oil drain tube
US6640792B2 (en) * 2001-08-16 2003-11-04 Commins Engine Company, Inc. Air/oil coalescer with an improved centrifugally assisted drainage
DE10232043A1 (en) * 2002-07-16 2004-02-05 Mann + Hummel Gmbh filtering device
DE50301399D1 (en) * 2002-07-16 2006-03-02 Mann & Hummel Gmbh Valve for controlling a fluid flow
JP4014145B2 (en) * 2002-08-02 2007-11-28 本田技研工業株式会社 Breather equipment for automotive powertrain
SE527725C2 (en) * 2003-01-02 2006-05-23 Karl-Gunnar Karlsson Arrangement in a combustion engine
US7080636B2 (en) * 2003-05-05 2006-07-25 Dichtungstechnik G. Bruss Gmbh & Co. Kg Oil separating device for a combustion engine
ITTO20040206A1 (en) * 2004-03-29 2004-06-29 Vhit Spa Intake system of a fluid with additional function of suction of another fluid
US8499749B2 (en) * 2005-10-28 2013-08-06 Donaldson Company, Inc. Aerosol separator; components; and, methods
US7383829B2 (en) * 2006-02-09 2008-06-10 Toyota Motor Engineering & Manufacturing North America, Inc. Oil drain device for an engine oil separator
KR100765584B1 (en) * 2006-11-20 2007-10-09 현대자동차주식회사 System for closed crankcase ventilation
JP4323540B2 (en) * 2007-06-29 2009-09-02 アイシン・エィ・ダブリュ株式会社 Breather device for automatic transmission
US7699029B2 (en) * 2007-07-26 2010-04-20 Cummins Filtration Ip, Inc. Crankcase ventilation system with pumped scavenged oil
US8714142B2 (en) 2007-08-02 2014-05-06 Donaldson Company, Inc. Crankcase ventilation filter assembly; components; and methods
CN101387212B (en) * 2008-10-29 2011-08-17 北京航空航天大学 Gas storage supercharging device applying to small-sized piston engine
US7866304B2 (en) * 2009-04-29 2011-01-11 GM Global Technology Operations LLC Engine fuel boil off management system
TR201203174A2 (en) * 2012-03-20 2013-10-21 Tuerk Traktoer Ve Ziraat Makinalari Anonim Sirketi New type of engine ventilation filter
US20140096753A1 (en) * 2012-10-08 2014-04-10 Serge V. Monros Diesel pollution control system
US9732707B1 (en) 2013-12-09 2017-08-15 High Output Technology, LLC Vent for engine crankcases
US10661210B2 (en) 2015-09-15 2020-05-26 Miniature Precision Components, Inc. Oil separator including spiral members defining helical flow paths
US10286347B2 (en) 2015-09-15 2019-05-14 Miniature Precision Components, Inc. Oil separator including spiral members defining helical flow paths

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2387208A (en) * 1943-05-20 1945-10-16 Arthur G Wood Oil saving separator for cooling systems
GB613386A (en) * 1946-06-20 1948-11-25 Enfield Cycle Co Ltd An improved valve system or "breather" for use in connection with the crank cases of internal combustion engines
FR1413201A (en) * 1964-08-27 1965-10-08 A condensation of the oil vapors of the engine lubrication system
DE1268902B (en) 1960-07-27 1968-05-22 Volkswagenwerk Ag Crankcase ventilation system of internal combustion-engines, particularly for motor vehicles
DE3107191A1 (en) 1981-02-26 1982-06-24 Daimler Benz Ag Crankcase ventilation for piston engines, especially for internal combustion engines
EP0395841A1 (en) * 1989-05-05 1990-11-07 FILTERWERK MANN &amp; HUMMEL GMBH Filling opening for filling lubricating oil into an internal combustion engine
EP0506571A1 (en) * 1991-03-29 1992-09-30 Pall Corporation Filtration and communication device between the atmosphere and the interior of a carter

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US2731958A (en) * 1956-01-24 Motor moisture
US5239972A (en) * 1992-03-24 1993-08-31 Nippon Soken, Inc. Gas/liquid separation device
US5450835A (en) * 1994-11-15 1995-09-19 Cummins Engine Company, Inc. Oil separator for reducing oil losses from crankcase ventilation

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2387208A (en) * 1943-05-20 1945-10-16 Arthur G Wood Oil saving separator for cooling systems
GB613386A (en) * 1946-06-20 1948-11-25 Enfield Cycle Co Ltd An improved valve system or "breather" for use in connection with the crank cases of internal combustion engines
DE1268902B (en) 1960-07-27 1968-05-22 Volkswagenwerk Ag Crankcase ventilation system of internal combustion-engines, particularly for motor vehicles
FR1413201A (en) * 1964-08-27 1965-10-08 A condensation of the oil vapors of the engine lubrication system
DE3107191A1 (en) 1981-02-26 1982-06-24 Daimler Benz Ag Crankcase ventilation for piston engines, especially for internal combustion engines
EP0395841A1 (en) * 1989-05-05 1990-11-07 FILTERWERK MANN &amp; HUMMEL GMBH Filling opening for filling lubricating oil into an internal combustion engine
EP0506571A1 (en) * 1991-03-29 1992-09-30 Pall Corporation Filtration and communication device between the atmosphere and the interior of a carter

Also Published As

Publication number Publication date
FI953020A (en) 1996-01-03
NO951906D0 (en) 1995-05-15
DE9410668U1 (en) 1994-08-18
PL309457A1 (en) 1996-01-08
ZA9505001B (en) 1996-02-09
YU44295A (en) 1998-12-23
FI953020D0 (en)
BR9502289A (en) 1996-06-18
JPH08170515A (en) 1996-07-02
NO951906L (en) 1996-01-03
US5579744A (en) 1996-12-03
CN1115828A (en) 1996-01-31
CA2153027A1 (en) 1996-01-03
FI953020A0 (en) 1995-06-19
CZ149995A3 (en) 1996-01-17

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