EP0591737A1 - System for venting oil vapour from an internal combustion engine crankcase - Google Patents

System for venting oil vapour from an internal combustion engine crankcase Download PDF

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Publication number
EP0591737A1
EP0591737A1 EP93114994A EP93114994A EP0591737A1 EP 0591737 A1 EP0591737 A1 EP 0591737A1 EP 93114994 A EP93114994 A EP 93114994A EP 93114994 A EP93114994 A EP 93114994A EP 0591737 A1 EP0591737 A1 EP 0591737A1
Authority
EP
European Patent Office
Prior art keywords
cylinder head
passages
crankcase
oil
internal combustion
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Withdrawn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
EP93114994A
Other languages
German (de)
English (en)
French (fr)
Inventor
Pietro Piccini
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.)
Fiat Auto SpA
Original Assignee
Fiat Auto SpA
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 Fiat Auto SpA filed Critical Fiat Auto SpA
Publication of EP0591737A1 publication Critical patent/EP0591737A1/en
Withdrawn legal-status Critical Current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
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02—Arrangements of lubricant conduits
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/18—DOHC [Double overhead camshaft]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases
    • F02F7/006—Camshaft or pushrod housings
    • F02F2007/0063—Head bolts; Arrangements of cylinder head bolts

Definitions

  • This invention falls within the field of internal combustion engines, and relates in particular to a system for venting the oil vapour which forms within the crankcase or oil sump.
  • a system for venting oil vapour from the crankcase of internal combustion engines of the type comprising a cylinder head fixed to a crankcase by fixing bolts passing through corresponding passages provided within the body of the cylinder head and screwed into suitable threaded seats provided in the crankcase; at least some of said passages being provided parallel to a series of further vertical cylindrical passages provided through the cylinder head and the crankcase for the return of the oil which condenses in the cylinder head; characterised in that at least one oil return passage is connected to one of said fixing bolt passages by a connection duct provided within the body of the cylinder head.
  • the reference numeral 10 indicates an internal combustion engine cylinder head, fixed in known manner to a crankcase 11 by fixing bolts 12 passing through corresponding passages 13 provided in the body of the cylinder head 10, and then screwed into suitable threaded seats 14 provided in the crankcase 11.
  • crankcase 11 houses a crankshaft, schematically indicated by 15 and shown partly immersed in an oil bath 16, which collects on the bottom of the crankcase before being again fed to other engine parts by a suitable pump (not shown) or other lubrication systems.
  • the passages 13 are upperly open to allow insertion of the bolts 12.
  • the cylinder head is covered by a cover 22, which is fixed to it in the conventional manner.
  • the internal combustion engine comprises a series of vertical cylindrical passages 17 and 18 for the return of the oil 19 which condenses in the cylinder head 11.
  • the oil return passages 17 and 18 are provided in the periphery of the cylinder head 10 and crankcase 11 external to the fixing bolt seats 12.
  • the passages 17 and 18 communicate upperly with a chamber 24 within the cylinder head, and lowerly with the interior of the crankcase (oil sump) containing the lubrication oil 16.
  • connection duct 20 preferably cast into the cylinder head 10 and arranged slightly inclined in a vertical plane towards the interior of the cylinder head to allow easy passage of oil vapour originating from the underlying crankcase.
  • connection ducts 20 are not provided for all the oil return passages 17 and 18, but only for two passages 18 positioned at two opposing vertices of the cylinder head as it is not necessary to utilize all the passages 17 and 18 in the engine to achieve the desired effect.
  • the oil vapour is collected upperly by a horizontal chamber 21 provided in the cover 22 closing the cylinder head 11.
  • the chamber 21 extends L-shaped along two adjacent sides of the cover 22 so that it reaches both the vertices of the cylinder head, at which the connection ducts 20 are present.
  • the oil vapour which hence reaches the collection chamber 21 is then conveyed to a single duct 23 leaving said chamber 21 and located in an intermediate position between the two passages 13 comprising the oil vent.
  • the vapour is returned to circulation into the intake air via the duct 23, and then fed to combustion.
  • only one of the oil return passages 18 is provided with a connection duct 20 connecting it directly to the nearest passage 13 for the fixing bolt 12, and hence to the exit duct 23.
  • venting system represents a simple and effective solution to the problem of excess pressure of oil vapour which, by providing a simple direct passage between the fixing bolt holes and the oil return passages, is evacuated from the crankcase without the need for costly and space-consuming additional ducts to be provided within the engine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
EP93114994A 1992-10-09 1993-09-17 System for venting oil vapour from an internal combustion engine crankcase Withdrawn EP0591737A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO920817 1992-10-09
ITTO920817A IT1257120B (it) 1992-10-09 1992-10-09 Sistema di sfiato dei vapori di olio dal carter di motori a combustione interna.

Publications (1)

Publication Number Publication Date
EP0591737A1 true EP0591737A1 (en) 1994-04-13

Family

ID=11410769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93114994A Withdrawn EP0591737A1 (en) 1992-10-09 1993-09-17 System for venting oil vapour from an internal combustion engine crankcase

Country Status (2)

Country Link
EP (1) EP0591737A1 (it)
IT (1) IT1257120B (it)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996019655A1 (en) * 1994-12-20 1996-06-27 Rover Group Limited An internal combustion engine
DE19632931A1 (de) * 1996-08-16 1998-02-19 Daimler Benz Ag Entlüftungsvorrichtung für ein Kurbelgehäuse einer Brennkraftmaschine
EP0918143A1 (en) * 1997-11-24 1999-05-26 Ford Global Technologies, Inc. Internal combustion engine
EP0978639A1 (de) * 1998-08-06 2000-02-09 Volkswagen Aktiengesellschaft Zylinderkopfhaube
DE19853537A1 (de) * 1998-11-20 2000-05-25 Audi Ag Brennkraftmaschine
EP1006272A3 (en) * 1998-12-01 2003-01-29 Honda Giken Kogyo Kabushiki Kaisha Cylinder head structure in multi-cylinder engine
EP1624162A1 (de) * 2004-08-04 2006-02-08 Ford Global Technologies, LLC, A subsidary of Ford Motor Company Verfahren zur Entlüftung eines Kurbelgehäuses einer Brennkraftmaschine und Brennkraftmaschine zur Durchführung eines derartigen Verfahrens
CN101943078A (zh) * 2010-08-24 2011-01-12 重庆长安汽车股份有限公司 一种内燃机的气缸盖
CN111058920A (zh) * 2019-12-31 2020-04-24 宁波吉利罗佑发动机零部件有限公司 一种油底壳总成

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4993375A (en) * 1989-06-19 1991-02-19 Nissan Motor Company, Ltd. Engine cylinder head cover
EP0448431A1 (fr) * 1990-03-22 1991-09-25 Automobiles Peugeot Dispositif d'admission et de déshuilage des gaz dans un moteur à combustion interne et moteur équipé de ce dispositif

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4993375A (en) * 1989-06-19 1991-02-19 Nissan Motor Company, Ltd. Engine cylinder head cover
EP0448431A1 (fr) * 1990-03-22 1991-09-25 Automobiles Peugeot Dispositif d'admission et de déshuilage des gaz dans un moteur à combustion interne et moteur équipé de ce dispositif

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996019655A1 (en) * 1994-12-20 1996-06-27 Rover Group Limited An internal combustion engine
GB2312020A (en) * 1994-12-20 1997-10-15 Rover Group An internal combustion engine
US5727512A (en) * 1994-12-20 1998-03-17 Rover Group Limited Internal combustion engine
GB2312020B (en) * 1994-12-20 1998-07-15 Rover Group An internal combustion engine
DE19632931A1 (de) * 1996-08-16 1998-02-19 Daimler Benz Ag Entlüftungsvorrichtung für ein Kurbelgehäuse einer Brennkraftmaschine
DE19632931C2 (de) * 1996-08-16 1999-12-02 Daimler Chrysler Ag Entlüftungsvorrichtung für ein Kurbelgehäuse einer Brennkraftmaschine
EP0918143A1 (en) * 1997-11-24 1999-05-26 Ford Global Technologies, Inc. Internal combustion engine
EP0978639A1 (de) * 1998-08-06 2000-02-09 Volkswagen Aktiengesellschaft Zylinderkopfhaube
DE19853537A1 (de) * 1998-11-20 2000-05-25 Audi Ag Brennkraftmaschine
EP1006272A3 (en) * 1998-12-01 2003-01-29 Honda Giken Kogyo Kabushiki Kaisha Cylinder head structure in multi-cylinder engine
US6513506B1 (en) 1998-12-01 2003-02-04 Honda Giken Kogyo Kabushiki Kaisha Cylinder head structure in multi-cylinder engine
US6672296B2 (en) 1998-12-01 2004-01-06 Honda Giken Kogyo Kabushiki Kaisha Cylinder head structure in multi-cylinder engine
EP1722090A3 (en) * 1998-12-01 2009-11-04 Honda Giken Kogyo Kabushiki Kaisha Cylinder head structure in multi-cylinder engine
EP1624162A1 (de) * 2004-08-04 2006-02-08 Ford Global Technologies, LLC, A subsidary of Ford Motor Company Verfahren zur Entlüftung eines Kurbelgehäuses einer Brennkraftmaschine und Brennkraftmaschine zur Durchführung eines derartigen Verfahrens
CN101943078A (zh) * 2010-08-24 2011-01-12 重庆长安汽车股份有限公司 一种内燃机的气缸盖
CN111058920A (zh) * 2019-12-31 2020-04-24 宁波吉利罗佑发动机零部件有限公司 一种油底壳总成
CN111058920B (zh) * 2019-12-31 2021-04-16 宁波吉利罗佑发动机零部件有限公司 一种油底壳总成

Also Published As

Publication number Publication date
ITTO920817A1 (it) 1994-04-09
IT1257120B (it) 1996-01-05
ITTO920817A0 (it) 1992-10-09

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19940217

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18D Application deemed to be withdrawn

Effective date: 19950704