US20080127953A1 - Engine Head Cover Assembly Having An Integrated Oil Separator - Google Patents
Engine Head Cover Assembly Having An Integrated Oil Separator Download PDFInfo
- Publication number
- US20080127953A1 US20080127953A1 US11/565,872 US56587206A US2008127953A1 US 20080127953 A1 US20080127953 A1 US 20080127953A1 US 56587206 A US56587206 A US 56587206A US 2008127953 A1 US2008127953 A1 US 2008127953A1
- Authority
- US
- United States
- Prior art keywords
- head cover
- cover assembly
- cap
- set forth
- oil separator
- 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.)
- Abandoned
Links
Images
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
- F01M13/0416—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil arranged in valve-covers
-
- 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
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0461—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a labyrinth
Definitions
- the invention relates to an engine head cover for an internal combustion engine. More particularly, the invention relates to an engine head cover having an integrated oil separator for separating oil from crankcase gases during operation of the engine.
- An internal combustion engine typically includes a combustion chamber, where a fuel air mixture is burned to cause movement of a set of reciprocating pistons, and a crankcase, which contains the crankshaft driven by the pistons. During operation, it is normal for the engine to experience “blow-by,” wherein combustion gases leak past the piston-cylinder gap from the combustion chamber and into the crankcase. These blow-by or crankcase gases contain moisture, acids and other undesired by-products of the combustion process.
- An engine typically includes a Positive Crankcase Ventilation (PCV) system for removing harmful gases from the engine and prevents those gases from being expelled into the atmosphere.
- PCV Positive Crankcase Ventilation
- the PCV system does this by using manifold vacuum to draw vapors from the crankcase into the intake manifold. Vapor is then carried with the fuel/air mixture into an intake manifold of the combustion chambers where it is burned.
- the flow or circulation within the system is controlled by the PCV valve, which acts as both a crankcase ventilation system and as a pollution control device.
- crankcase gases It is normal for crankcase gases to also include a very fine oil mist.
- the oil mist is carried by the PCV system to the manifold.
- the oil mist is then burned in the combustion chamber along with the fuel/air mixture. This results in an increase in oil consumption.
- a known method of removing oil from the crankcase gases is to use an oil separator.
- the crankcase gases flow through the oil separator. Localized high pressure areas in the oil separator promote separation of oil from the gases.
- the oil is re-introduced back to a sump via a drain device. The sump generally holds excess oil in the system.
- a head cover assembly for covering a crankcase of an internal combustion engine.
- the head cover assembly includes a head cover and an oil separator.
- the head cover has opposite outer and inner surfaces.
- the oil separator separates oil from crankcase gases passing therethrough.
- the oil separator has a housing disposed along an inner surface of the head cover.
- the housing has at least one side wall integral with the head cover, which together with the head cover define an interior space of the oil separator.
- FIG. 1 is a bottom view of a head cover assembly having an integral oil separator according to one embodiment of the invention
- FIG. 2 is an enlarged bottom view of a portion of the head cover assembly shown in FIG. 1 ;
- FIG. 3 is an exploded perspective bottom view of the head cover assembly of FIG. 1 ;
- FIG. 4 is a bottom view of a head cover assembly according to a second embodiment of the invention.
- FIG. 5 is an enlarged bottom view of a portion of the head cover assembly shown in FIG. 4 ;
- FIG. 6 is a top perspective view of the head cover assembly of FIG. 4 ;
- FIG. 7 is an enlarged exploded top perspective view of a portion of the head cover assembly of FIG. 4 ;
- FIG. 8 is an enlarged exploded perspective view of a portion of the head cover assembly according to a third embodiment of the invention.
- FIG. 9 is an enlarged perspective view of a portion of the head cover assembly of FIG. 8 showing a side of an oil separator cap with a tab for securing the cap to a head cover;
- FIG. 10 is a cross sectional view of the head cover assembly of FIG. 8 illustrating the slot for lockingly receiving the tab for securing the cap to the head cover.
- a head cover assembly for enclosing a crankcase of an internal combustion engine is generally indicated at 10 .
- the head cover assembly 10 includes a head cover 12 having opposite outer 14 and inner 16 surfaces.
- the head cover assembly 10 also includes an oil separator 20 for removing oil from crankcase gases in the engine.
- the oil separator 20 includes a housing 30 disposed along the inner surface 16 of the head cover 12 .
- the housing 30 has a plurality of side walls 22 , 24 , 26 , 28 integrally formed with the head cover 12 . At least one of the side walls 28 extends along the inner surface 16 of the head cover 12 , while the remaining side walls 22 , 24 , 26 extend outwardly from the inner surface 16 of the head cover 12 .
- the head cover may be formed from steel, aluminum or any material or combination of materials known by those skilled in the art, which are suitable for use in the heat and the environment associated with the engine and which allows integral formation of at least portions of the oil separator housing with the head cover.
- a portion of the head cover 12 extends between the side walls 22 , 24 , 26 , 28 to form an interior space.
- a plate 40 cooperates with the side walls 22 , 24 , 26 , 28 to enclose the interior space of the oil separator 20 .
- the head cover 12 has at least one threaded bore 29 for securing the plate 40 to the side walls 22 , 24 , 26 , 28 using a bolt.
- a gasket (not shown) may be disposed between the side walls 22 , 24 , 26 , 28 and the plate 40 to prevent gases from leaking from the interior space of the housing 30 .
- the housing may have a generally cylindrical side wall that extends from the inner surface of the head cover instead of the straight side walls of the illustrated embodiment.
- the plate would then have a generally circular shape to cooperate with the generally cylindrical shape of the side wall.
- the housing 30 of the oil separator 20 includes an inlet and an outlet.
- a plurality of guide walls 43 extend from the head cover 12 toward the plate 40 to define a path 39 that directs crankcase gases through the housing 30 .
- the path 39 is shaped to promote separation of oil from crankcase gases as the gases flow through the path 39 between the inlet and outlet. The separated oil is collected in the housing 30 and re-introduced to the oil sump (not shown) for re-use in the engine.
- FIGS. 4-7 A second embodiment of the head cover assembly 110 is shown in FIGS. 4-7 , wherein like parts are indicated by numerals offset by 100 .
- the housing 130 is formed by a cap 41 , a cover plate 45 and a cylindrical side wall 50 , which together define the interior space of the oil separator 120 .
- the cylindrical side wall 50 is formed integrally with the head cover 112 and defines a recess for receiving the cap therein.
- the cap 41 includes an annular portion 40 with threads 42 for engaging mating threads 44 on the head cover 112 .
- the cap 41 is inserted into the recess formed by the cylindrical side wall 50 .
- the cap 41 is then turned about its longitudinal axis to cause threading engagement between the threads 42 on the cap 41 and mating threads 44 formed in the cylindrical side wall 50 , thereby securing the cap 41 to the head cover 112 .
- the cap 41 is fully inserted when it contacts a locating surface 52 formed head cover 112 adjacent a bottom end of the cylindrical side wall 50 .
- the cover plate 45 is disposed between the cap 41 and the head cover 112 .
- the plurality of guide walls 143 extend from the cover plate 45 to define the flow path for crankcase gases passing through the oil separator 120 .
- FIGS. 8-11 A third embodiment of the head cover assembly 210 are shown in FIGS. 8-11 .
- the threads from the second embodiment are replaced with a tab and slot arrangement, wherein a tab 60 extends outwardly from the annular portion 240 of the cap 241 and a guide slot 62 is formed in the cylindrical side wall 250 .
- the guide slot 62 extends in a generally longitudinal direction along the cylindrical side wall 250 .
- a key slot 68 extends generally orthogonally from an end 66 of the guide slot 62 .
- the cap 241 of the housing 230 is inserted into the recess defined by the cylindrical side wall 250 .
- the tab 60 slides in the guide slot 62 toward the key slot 68 .
- the cap 241 is fully inserted when it contacts the locating surface 252 at the bottom of the recess. The cap 241 is then turned so that the tab 60 slides into the key slot 68 , thereby securing the oil separator 220 to the head cover 212 .
- the tab and slot arrangement may be reversed, wherein the tab extends from the head cover and the slot is formed in the cap.
- the guide walls are arranged in the form of a labyrinth, which promotes the separation of oil from the crankcase gases as the gases flow therealong.
- the oil separator may be a cyclone type oil separator, wherein the guide wall is a coil that defines a spiral-shape flow path that extends between the inlet and the outlet of the housing. It should be appreciated by those having ordinary skill in the art that other types of oil separators may be packaged within the housing.
- the oil separator may incorporate more than one type of oil separating arrangement within the housing, such as a combination between labyrinth and cyclone type oil separating arrangements.
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)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/565,872 US20080127953A1 (en) | 2006-12-01 | 2006-12-01 | Engine Head Cover Assembly Having An Integrated Oil Separator |
EP07854823A EP2087212A4 (fr) | 2006-12-01 | 2007-11-29 | Ensemble de couverture de culasse de moteur à séparateur d'huile intégré |
PCT/US2007/085861 WO2008070514A2 (fr) | 2006-12-01 | 2007-11-29 | Ensemble de couverture de culasse de moteur à séparateur d'huile intégré |
JP2009539470A JP2010511827A (ja) | 2006-12-01 | 2007-11-29 | 一体形オイルセパレータを有するエンジンヘッドカバー組立品 |
US12/191,646 US7942122B2 (en) | 2006-12-01 | 2008-08-14 | Engine head cover assembly having an integrated oil separator and a removable cover |
JP2014010565A JP6096684B2 (ja) | 2006-12-01 | 2014-01-23 | 一体形オイルセパレータを有するエンジンヘッドカバー組立品 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/565,872 US20080127953A1 (en) | 2006-12-01 | 2006-12-01 | Engine Head Cover Assembly Having An Integrated Oil Separator |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/191,646 Continuation-In-Part US7942122B2 (en) | 2006-12-01 | 2008-08-14 | Engine head cover assembly having an integrated oil separator and a removable cover |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080127953A1 true US20080127953A1 (en) | 2008-06-05 |
Family
ID=39474312
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/565,872 Abandoned US20080127953A1 (en) | 2006-12-01 | 2006-12-01 | Engine Head Cover Assembly Having An Integrated Oil Separator |
Country Status (4)
Country | Link |
---|---|
US (1) | US20080127953A1 (fr) |
EP (1) | EP2087212A4 (fr) |
JP (2) | JP2010511827A (fr) |
WO (1) | WO2008070514A2 (fr) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100018493A1 (en) * | 2008-07-25 | 2010-01-28 | Hyundai Motor Company | Device for Separating Oil From Blow-By Gas |
US20100242931A1 (en) * | 2009-03-31 | 2010-09-30 | Mann+Hummel Gmbh | Air/oil separating pcv apparatus |
CN102200071A (zh) * | 2011-05-14 | 2011-09-28 | 重庆长安汽车股份有限公司 | 一种具有回油结构的发动机缸罩通气盖板 |
WO2013059588A1 (fr) * | 2011-10-20 | 2013-04-25 | Donaldson Company, Inc. | Ensembles, composants et procédés de séparateur air/huile |
US20130312720A1 (en) * | 2012-05-23 | 2013-11-28 | Honda Motor Co., Inc. | Head cover baffle system for improving oil mist separation |
US9221001B2 (en) | 2011-10-11 | 2015-12-29 | Toyota Boshoku Kabushiki Kaisha | Oil mist separator |
CN113356964A (zh) * | 2021-07-20 | 2021-09-07 | 安徽江淮汽车集团股份有限公司 | 一种呼吸系统 |
USD931763S1 (en) * | 2020-02-25 | 2021-09-28 | Ciro Corporation | Pair of motorcycle engine cylinder head covers |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008037104B4 (de) * | 2008-08-08 | 2020-12-03 | Deutz Ag | Kurbelgehäuseentlüftungsanschluss an einer Brennkraftmaschine |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4607604A (en) * | 1984-03-05 | 1986-08-26 | Aisin Seiki Kabushiki Kaisha | Oil separator for internal combustion engine |
US4667647A (en) * | 1984-03-15 | 1987-05-26 | Honda Giken Kogyo Kabushiki Kaisha | Crankcase ventilating system and method of removing oil mist from gas in the system |
US5069192A (en) * | 1989-10-24 | 1991-12-03 | Nissan Motor Company, Ltd. | Internal combustion engine with crankcase ventilation system |
US6394079B2 (en) * | 2000-03-31 | 2002-05-28 | Honda Giken Kogyo Kabushiki Kaisha | Gas-liquid separation device for internal combustion engine used in outboard motor |
US6443136B1 (en) * | 2000-10-25 | 2002-09-03 | Honda Giken Kogyo Kabushiki Kaisha | Breather apparatus for an internal combustion engine |
US6530367B2 (en) * | 2001-02-19 | 2003-03-11 | Honda Giken Kogyo Kabushiki Kaisha | Engine air-oil separator |
US6860915B2 (en) * | 2001-06-07 | 2005-03-01 | Robert Bosch Gmbh | Oil separating device for crankcase gases of an internal combustion engine |
US20050092267A1 (en) * | 2003-10-15 | 2005-05-05 | Mahle Tennex Corporation | Oil separator combined with cylinder head cover |
US20080083398A1 (en) * | 2006-10-06 | 2008-04-10 | Harley-Davidson Motor Company Group, Inc. | Breather assembly for an internal combustion engine |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5464844U (fr) * | 1977-10-18 | 1979-05-08 | ||
JPS6030406Y2 (ja) * | 1979-12-05 | 1985-09-12 | ダイハツ工業株式会社 | 内燃機関におけるブロ−バイガスの抽出装置 |
JPS57115914U (fr) * | 1981-01-09 | 1982-07-17 | ||
JPS6449618U (fr) * | 1987-09-22 | 1989-03-28 | ||
JPH02114714U (fr) * | 1989-02-28 | 1990-09-13 | ||
JPH0360194A (ja) * | 1989-07-28 | 1991-03-15 | Seiko Epson Corp | 蓋構造 |
JP3077477B2 (ja) * | 1993-10-30 | 2000-08-14 | スズキ株式会社 | ヘッドカバーの構造 |
JP2002104483A (ja) * | 2000-09-22 | 2002-04-10 | Calsonic Kansei Corp | 注入口キャップ |
DE60239944D1 (de) * | 2001-09-18 | 2011-06-16 | Yanmar Co Ltd | Motorentlüftungsvorrichtung |
US6453892B1 (en) * | 2001-10-11 | 2002-09-24 | Dana Corporation | Constrained layer damped steel baffle |
-
2006
- 2006-12-01 US US11/565,872 patent/US20080127953A1/en not_active Abandoned
-
2007
- 2007-11-29 EP EP07854823A patent/EP2087212A4/fr not_active Withdrawn
- 2007-11-29 JP JP2009539470A patent/JP2010511827A/ja not_active Withdrawn
- 2007-11-29 WO PCT/US2007/085861 patent/WO2008070514A2/fr active Application Filing
-
2014
- 2014-01-23 JP JP2014010565A patent/JP6096684B2/ja not_active Expired - Fee Related
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4607604A (en) * | 1984-03-05 | 1986-08-26 | Aisin Seiki Kabushiki Kaisha | Oil separator for internal combustion engine |
US4667647A (en) * | 1984-03-15 | 1987-05-26 | Honda Giken Kogyo Kabushiki Kaisha | Crankcase ventilating system and method of removing oil mist from gas in the system |
US5069192A (en) * | 1989-10-24 | 1991-12-03 | Nissan Motor Company, Ltd. | Internal combustion engine with crankcase ventilation system |
US6394079B2 (en) * | 2000-03-31 | 2002-05-28 | Honda Giken Kogyo Kabushiki Kaisha | Gas-liquid separation device for internal combustion engine used in outboard motor |
US6443136B1 (en) * | 2000-10-25 | 2002-09-03 | Honda Giken Kogyo Kabushiki Kaisha | Breather apparatus for an internal combustion engine |
US6530367B2 (en) * | 2001-02-19 | 2003-03-11 | Honda Giken Kogyo Kabushiki Kaisha | Engine air-oil separator |
US6860915B2 (en) * | 2001-06-07 | 2005-03-01 | Robert Bosch Gmbh | Oil separating device for crankcase gases of an internal combustion engine |
US20050092267A1 (en) * | 2003-10-15 | 2005-05-05 | Mahle Tennex Corporation | Oil separator combined with cylinder head cover |
US20080083398A1 (en) * | 2006-10-06 | 2008-04-10 | Harley-Davidson Motor Company Group, Inc. | Breather assembly for an internal combustion engine |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100018493A1 (en) * | 2008-07-25 | 2010-01-28 | Hyundai Motor Company | Device for Separating Oil From Blow-By Gas |
US8113185B2 (en) * | 2008-07-25 | 2012-02-14 | Hyundai Motor Company | Device for separating oil from blow-by gas |
US20100242931A1 (en) * | 2009-03-31 | 2010-09-30 | Mann+Hummel Gmbh | Air/oil separating pcv apparatus |
US8082907B2 (en) * | 2009-03-31 | 2011-12-27 | Mann+Hummel Gmbh | Air/oil separating PCV apparatus |
CN102200071A (zh) * | 2011-05-14 | 2011-09-28 | 重庆长安汽车股份有限公司 | 一种具有回油结构的发动机缸罩通气盖板 |
US9221001B2 (en) | 2011-10-11 | 2015-12-29 | Toyota Boshoku Kabushiki Kaisha | Oil mist separator |
WO2013059588A1 (fr) * | 2011-10-20 | 2013-04-25 | Donaldson Company, Inc. | Ensembles, composants et procédés de séparateur air/huile |
CN103987928A (zh) * | 2011-10-20 | 2014-08-13 | 唐纳森公司 | 空气/油分离器组件、部件和方法 |
US20130312720A1 (en) * | 2012-05-23 | 2013-11-28 | Honda Motor Co., Inc. | Head cover baffle system for improving oil mist separation |
US8887705B2 (en) * | 2012-05-23 | 2014-11-18 | Honda Motor Co., Ltd. | Head cover baffle system for improving oil mist separation |
USD931763S1 (en) * | 2020-02-25 | 2021-09-28 | Ciro Corporation | Pair of motorcycle engine cylinder head covers |
CN113356964A (zh) * | 2021-07-20 | 2021-09-07 | 安徽江淮汽车集团股份有限公司 | 一种呼吸系统 |
Also Published As
Publication number | Publication date |
---|---|
WO2008070514A3 (fr) | 2008-12-04 |
JP2010511827A (ja) | 2010-04-15 |
WO2008070514A2 (fr) | 2008-06-12 |
JP2014074414A (ja) | 2014-04-24 |
EP2087212A2 (fr) | 2009-08-12 |
JP6096684B2 (ja) | 2017-03-15 |
EP2087212A4 (fr) | 2009-11-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: TOYOTA ENGINEERING & MANUFACTURING NORTH AMERICA, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SHIEH, TENG-HUA;RAJAN, NAVEEN;LIU, WEI;REEL/FRAME:018572/0741 Effective date: 20061116 |
|
AS | Assignment |
Owner name: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AME Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE PREVIOUSLY RECORDED ON REEL 018572 FRAME 0741;ASSIGNORS:SHIEH, TENG-HUA;RAJAN, NAVEEN;LIU, WEI;REEL/FRAME:019828/0404 Effective date: 20061116 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |