EP0870907B1 - Vorrichtung zur Entlüftung eines Kurbelgehäuses - Google Patents

Vorrichtung zur Entlüftung eines Kurbelgehäuses Download PDF

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Publication number
EP0870907B1
EP0870907B1 EP98104888A EP98104888A EP0870907B1 EP 0870907 B1 EP0870907 B1 EP 0870907B1 EP 98104888 A EP98104888 A EP 98104888A EP 98104888 A EP98104888 A EP 98104888A EP 0870907 B1 EP0870907 B1 EP 0870907B1
Authority
EP
European Patent Office
Prior art keywords
crankcase
oil
air inlet
breather line
line
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
EP98104888A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0870907A1 (de
Inventor
Jens Bieler
Mario Mürwald
Peter Werner
Harald Zink
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler 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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP0870907A1 publication Critical patent/EP0870907A1/de
Application granted granted Critical
Publication of EP0870907B1 publication Critical patent/EP0870907B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/06—Means for keeping lubricant level constant or for accommodating movement or position of machines or engines
    • F01M11/062—Accommodating movement or position of machines or engines, e.g. dry sumps
    • F01M11/065—Position
    • F01M11/067—Position inverted, e.g. for inverted flight
    • 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
    • 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
    • F01M2013/0444—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with means for accommodating movement or position of engines

Definitions

  • the invention relates to a device for ventilation a crankcase of an internal combustion engine, in particular of a motor vehicle, in operation after Preamble of claim 1.
  • DE 29 10 713 A1 describes an arrangement for avoidance throwing oil from internal combustion engines with a between an air filter of an intake pipe and one valve chamber connected to the crankcase known crankcase ventilation line known, for ventilation of the crankcase Full load operation ensures. The oil should leak from the crankcase via the crankcase ventilation line be avoided. In addition there is one Equalization line provided between the Crankcase ventilation pipe and the crankcase connected.
  • Another disadvantage is that extreme vehicle positions can cause the air inlet opening the crankcase ventilation pipe from which itself displacing oil in the crankcase will be flooded can, and the risk of a so-called oil hammer, the lead to damage to the internal combustion engine can exist.
  • the present invention is therefore based on the object based, a device for venting a crankcase to create an internal combustion engine, by means of which air can be removed from the crankcase and ventilation even in extreme vehicle positions of the crankcase without oil discharge, or under Avoiding oil spill is feasible.
  • At least one air inlet opening is the two vent lines arranged such that they during approximately horizontal vehicle positions or Oil levels are above an oil level. So can through the air inlet opening, which is above the Oil level lies, air is discharged from the crankcase become.
  • the air inlet opening is located the first vent line or the second vent line below the oil level, and there can be no more air through the vent line, whose air inlet opening below the oil level lies to be dissipated.
  • the air inlet opening the ventilation line above the oil level is released from the oil in this case, with what the air flow to be discharged through this from the Exit the crankcase without removing oil.
  • Fig. 1 is an internal combustion engine 1 with a crankcase 2, in which a first vent line 3 and a second vent line 4 arranged are shown.
  • crankcase 2 with an oil pan 5 and the first vent line 3 and the second Vent line 4 shown.
  • Air inlet opening 6 of the first ventilation line 3 in the interior of the crankcase 2 on a low-oil Place arranged so that they are approximately horizontal vehicle positions or oil levels above an oil level 7. In this condition Air through the air inlet opening 6 from the crankcase 2 are dissipated.
  • An air inlet opening 8 of the second vent line 4 is below the oil level 7 arranged. Thus, through the second ventilation line 4 no air from the crankcase 2 are dissipated.
  • the arrangement of the two vent lines 3, 4 has the advantage that depending on a vehicle position or the oil level one of the air inlet openings 6 or 8 is arranged above the oil level 7.
  • the air flows over the Air inlet opening 6 of the first ventilation line 3 into a kind of chicane 9.
  • the chicane 9 has in Area of the air inlet opening 6 of the first ventilation line 3 a separating rib 10, which the Flow guidance of those emerging from the crankcase 2 Redirects air in such a way that the oil greater inertia than its carrier medium, in Deflection area is deposited on a wall 11, which thus in baffle 9 as an impact oil separator acts.
  • the separated oil runs down the wall 11 and through an opening 12 into a downpipe 13, the end facing away from the opening 12 with a Siphon 14 is provided.
  • the siphon 14 is U-shaped trained piece of pipe that at its the Down pipe 13 opposite end is formed.
  • the one entering the siphon 14 through the downpipe 13 Oil is collected there and flows from a fill level 15 until the filling level is reached again 15 in the crankcase 2.
  • the siphon 14 is thus for escaping air from the crankcase 2 advantageously not passable, causing a drainage of the Oil from the chicane 9 is not caused by an air flow is hindered or cannot be prevented.
  • the exiting air flow is through a pipe section 16 from the chicane 9 into the second ventilation line 4, which consists of a riser 17 and a pipe socket 18 is formed, initiated in the area of the riser 17.
  • the second vent line 4 has one from the air inlet opening 6 of the pipe socket 18 to towards its other end, at which a throttle 19 is provided on decreasing diameter.
  • This configuration of the second vent line 4 gives it the functional character of a volume separator, which causes that is still in the air flow oil on the inner wall of the second Vent line 4 settles into the crankcase 2 flows back. As a result, no oil or only a very small amount of oil discharged from the crankcase 2.
  • both oil separators i.e. the Impact oil separator or the wall 11 and the volume oil separator arranged inside the crankcase 2, which prevents contamination of the oil by impurities with foreign bodies outside the crankcase 2 is possible.
  • the first vent line 3 and the second vent line 4 are essentially for the ventilation of the crankcase 2 during a partial load operation of the internal combustion engine 1 provided.
  • Venting occurs during full load operation via another unthrottled, not shown, pipe independent of the partial load ventilation system larger cross section carried out like it the prior art, for example DE 29 10 713 A1, is known.
  • This line carries the air over a larger oil separator to the intake manifold in front of the throttle valve or directly into a not closer Air filter housing shown.
  • both air inlet openings 6, 8 are arranged above the oil level 7.
  • the oil shifts in the oil pan 5 such that one of the air inlet openings 6 or 8 above and the other air inlet 8 or 6 lies below the oil level 7.
  • Air inlet opening 6 of the first ventilation line 3 below and the air inlet 8 of the second Vent line 4 is above the oil level 7.
  • Air inlet opening 8 is located in vehicle situations below and the air inlet opening 6 above the Oil level 7.
  • This embodiment also ensures that depending on a driving situation at least one of the two air inlet openings 6,8 above the oil level 7 lies and a ventilation of the crankcase 2 can be done without oil discharge.
EP98104888A 1997-04-12 1998-03-18 Vorrichtung zur Entlüftung eines Kurbelgehäuses Expired - Lifetime EP0870907B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19715233A DE19715233C1 (de) 1997-04-12 1997-04-12 Vorrichtung zur Entlüftung eines Kurbelgehäuses
DE19715233 1997-04-12

Publications (2)

Publication Number Publication Date
EP0870907A1 EP0870907A1 (de) 1998-10-14
EP0870907B1 true EP0870907B1 (de) 2001-12-05

Family

ID=7826276

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98104888A Expired - Lifetime EP0870907B1 (de) 1997-04-12 1998-03-18 Vorrichtung zur Entlüftung eines Kurbelgehäuses

Country Status (2)

Country Link
EP (1) EP0870907B1 (ar)
DE (2) DE19715233C1 (ar)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19951103C2 (de) * 1999-10-23 2001-08-09 Daimler Chrysler Ag Vorrichtung zum Einfüllen und Absaugen von Öl
DE10238422A1 (de) * 2002-08-22 2004-03-04 Daimlerchrysler Ag Brennkraftmaschine
DE102014225817B4 (de) 2014-12-15 2022-10-06 Mahle International Gmbh Entlüftungseinrichtung für eine Brennkraftmaschine sowie Brennkraftmaschine
DE102016000632A1 (de) 2016-01-25 2017-07-27 Hengst Se & Co. Kg Vorrichtung und Verfahren zur Entlüftung eines Kurbelgehäuses einer Brennkraftmaschine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2391208A (en) * 1943-03-25 1945-12-18 Air Maze Corp Oil separator
US3377779A (en) * 1966-02-16 1968-04-16 Gen Electric Air separation device and liquid delivery system incorporating same
FR1599540A (ar) * 1968-04-04 1970-07-15
GB1531785A (en) * 1976-09-13 1978-11-08 Kubota Ltd Diesel engines
DE2910713A1 (de) * 1979-03-19 1980-10-02 Volkswagenwerk Ag Anordnung zur vermeidung des oelwerfens von brennkraftmaschinen
JPH07116930B2 (ja) * 1987-08-01 1995-12-18 マツダ株式会社 エンジンのブロ−バイガス通路構造
DD287977A5 (de) * 1989-09-15 1991-03-14 Veb Robur-Werke Zittau,Betrieb Des Ifa-Kombinates Nkw,De Verfahren und vorrichtung zum entfernen von leckagedaempfen aus dem gehaeuse einer brennkraftmaschine
JP3106826B2 (ja) * 1993-12-17 2000-11-06 トヨタ自動車株式会社 内燃機関のｐｃｖ装置

Also Published As

Publication number Publication date
DE19715233C1 (de) 1998-11-19
EP0870907A1 (de) 1998-10-14
DE59802286D1 (de) 2002-01-17

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