WO2001004464A1 - Hubkolbenbrennkraftmaschine mit einer nockenwelle - Google Patents
Hubkolbenbrennkraftmaschine mit einer nockenwelle Download PDFInfo
- Publication number
- WO2001004464A1 WO2001004464A1 PCT/EP2000/004586 EP0004586W WO0104464A1 WO 2001004464 A1 WO2001004464 A1 WO 2001004464A1 EP 0004586 W EP0004586 W EP 0004586W WO 0104464 A1 WO0104464 A1 WO 0104464A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- camshaft
- internal combustion
- combustion engine
- reciprocating internal
- bore
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
-
- 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
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0422—Separating oil and gas with a centrifuge device
Definitions
- the invention relates to a reciprocating piston internal combustion engine with a camshaft according to the preamble of claim 1.
- the camshaft of the reciprocating piston internal combustion engine has an essentially central axial bore, from which at least one radial bore leads the space surrounding the camshaft and which is connected to an inlet duct.
- the camshaft is usually arranged above the gas exchange valves in the cylinder head of the reciprocating piston internal combustion engine. The space surrounding it is connected to the Kurbeigehause m, so that the crankcase gases can be passed through the radial and axial bore m of the camshaft over a short distance m an inlet channel.
- the axial bore can run centrally through the camshaft if the camshaft, in particular its bearings, is lubricated from the outside. If the camshaft is lubricated through internal lubricating oil bores, the axial bore for ventilation is a little radially offset to the lubricating oil supply, whereby the two systems are strictly separated from each other.
- the radial bore of the camshaft through a radial bore in a disk which is provided on the camshaft.
- the disc can be integrally formed on the camshaft or can be placed separately on the camshaft by pressing on the camshaft is pressed, clamped, screwed, glued, soldered or welded.
- the disk expediently has at least one axially parallel bore which is connected to the radial bore.
- the crankcase gases entering through the axially parallel bore are separated by centrifugal force, whereby the oil components are thrown outwards through the radial bore, while the gaseous components pass through the pressure drop through the axial central bore of the crankshaft and from there through the intake system.
- a particularly simple configuration results in the case of hollow camshafts in which the cams are formed by an internal pressure.
- the central cavity can be connected to the space surrounding the camshaft through ventilation holes in the area of the largest cam elevation.
- an effective oil separation is achieved due to the considerable distance of the cam elevation from the axis of rotation.
- FIG. 1 schematically shows a camshaft of a reciprocating piston internal combustion engine according to the invention
- Fig. 2 shows a variant in an enlarged partial section
- Fig. 3 shows a variant with a hollow camshaft.
- a camshaft 1 with cams 2 is rotatably mounted in a housing 5 by means of bearings 3. At the end it is sealed off from the housing 5 by a seal 4.
- the housing 5 can be a cylinder head of a reciprocating piston internal combustion engine and encloses a space 13 which surrounds the camshaft 1 and is connected to a crankcase (not shown in more detail).
- the camshaft 1 has an axial bore 6, from which radial bores 7 extend, which m the space 13 m.
- the axial bore 6 of the camshaft 1 has an outlet 16 at one end, which is connected to an inlet channel of the reciprocating piston internal combustion engine (not shown in more detail).
- crankcase gases Due to the pressure drop from the Kurbeigehause to the inlet channel, crankcase gases flow through the radial bores 7 and the axial bore 6 and the outlet 16 m through the inlet channel.
- the direction of flow of the crankcase gases is designated 8. Centrifugal forces are exerted on the crankcase gases entering the camshaft 1 by the rotation of the camshaft 1. Because of the greater mass of the oil components, these are larger for them, so that they are thrown outwards, while the lighter gas components are transported inwards against the centrifugal force due to the pressure drop.
- a disc 10 is provided on the camshaft 1 in the area of the radial bore 7 in the embodiment according to FIG. 2, the radial bore 11 of which extends the radial bore 7 of the camshaft 1.
- FIG. 3 shows a hollow camshaft 17, in which cams 18 are formed by internal pressure. Vent holes 19 in the area of the largest elevation of the cams 18 are provided on the end faces of the cams 18 and enable the crankcase gases to reach a central cavity 20 of the camshaft 17, which is connected to the intake system m.
- the heavier oil components are subject to a stronger centrifugal force, which, contrary to the pressure drop, forces them back into space 13.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00938662A EP1194680B1 (de) | 1999-07-08 | 2000-05-20 | Hubkolbenbrennkraftmaschine mit einer nockenwelle |
US10/041,969 US6502565B2 (en) | 1999-07-08 | 2002-01-07 | Reciprocating internal combustion engine including a camshaft |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19931740.2 | 1999-07-08 | ||
DE19931740A DE19931740C2 (de) | 1999-07-08 | 1999-07-08 | Hubkolbenbrennkraftmaschine mit einer Nockenwelle |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/041,969 Continuation-In-Part US6502565B2 (en) | 1999-07-08 | 2002-01-07 | Reciprocating internal combustion engine including a camshaft |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001004464A1 true WO2001004464A1 (de) | 2001-01-18 |
Family
ID=7914023
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/004586 WO2001004464A1 (de) | 1999-07-08 | 2000-05-20 | Hubkolbenbrennkraftmaschine mit einer nockenwelle |
Country Status (4)
Country | Link |
---|---|
US (1) | US6502565B2 (de) |
EP (1) | EP1194680B1 (de) |
DE (1) | DE19931740C2 (de) |
WO (1) | WO2001004464A1 (de) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2431567A1 (en) * | 2000-09-01 | 2002-03-07 | Bombardier-Rotax Gmbh & Co. Kg | Blow-by gas separator and decompressor for an internal combustion engine |
US6758197B2 (en) | 2000-09-01 | 2004-07-06 | Bombardier-Rotax Gmbh | Blow-by gas separator and decompressor for an internal combustion engine |
US6584964B1 (en) | 2002-08-13 | 2003-07-01 | Briggs & Stratton Corporation | Engine having a centrifugal oil separator |
DE10323261A1 (de) * | 2003-05-23 | 2004-12-16 | Daimlerchrysler Ag | Zentrifugal-Ölabscheider für Blow-By-Gase einer Brennkraftmaschine |
DE102004008826A1 (de) * | 2004-02-20 | 2005-09-08 | Mahle Filtersysteme Gmbh | Zentrifugal-Ölnebelabscheider in einem Verbrennungsmotor |
AT501031B1 (de) * | 2004-09-02 | 2006-11-15 | Avl List Gmbh | Brennkraftmaschine mit zumindest einer mindestens einen entlüftungskanal aufweisenden nockenwelle |
US7717101B2 (en) | 2005-05-10 | 2010-05-18 | Mahle International Gmbh | Centrifugal oil mist separation device integrated in an axial hollow shaft of an internal combustion engine |
DE102005034273A1 (de) * | 2005-07-22 | 2006-06-14 | Daimlerchrysler Ag | Brennkraftmaschine |
US7455057B2 (en) * | 2005-11-14 | 2008-11-25 | Brp-Rotax Gmbh & Co. Kg | Internal combustion engine blow-by gas ventilation system |
DE102006012611A1 (de) * | 2006-03-20 | 2007-09-27 | Mahle International Gmbh | Zylinderkopf eines Verbrennungsmotors |
DE102006024817A1 (de) * | 2006-05-29 | 2007-12-06 | Mahle International Gmbh | Zylinderkopf eines Verbrennungsmotors |
JP4884279B2 (ja) * | 2007-03-30 | 2012-02-29 | 本田技研工業株式会社 | ブリーザ装置を備える内燃機関 |
US8166958B2 (en) * | 2007-08-15 | 2012-05-01 | GM Global Technology Operations LLC | Positive crankcase ventilation system for an internal combustion engine |
US20100006076A1 (en) * | 2008-07-08 | 2010-01-14 | Mavinahally Nagesh S | Breather System for a Four Stroke Engine |
KR101028553B1 (ko) * | 2008-11-25 | 2011-04-11 | 기아자동차주식회사 | 캠으로 구동하는 연료 펌프 윤활장치 |
DE102010014546A1 (de) * | 2010-04-10 | 2011-10-13 | Mahle International Gmbh | Brennkraftmaschine |
DE102011000458A1 (de) * | 2011-02-02 | 2012-08-02 | Thyssenkrupp Presta Teccenter Ag | Welle, insbesondere Nockenwelle mit einem hohlen Wellenabschnitt |
CN102434250B (zh) * | 2011-11-23 | 2013-11-20 | 奇瑞汽车股份有限公司 | 一种曲轴箱通风的油气分离结构的运作方法 |
US9181883B2 (en) | 2013-01-18 | 2015-11-10 | Nagesh S. Mavinahally | Four cycle engine carburetors |
DE102013108770A1 (de) * | 2013-08-13 | 2015-02-19 | Thyssenkrupp Presta Teccenter Ag | Nockenwellenbaugruppe sowie Nockenwellenanordnung |
CN103790663B (zh) * | 2013-12-31 | 2017-01-25 | 广西玉柴机器股份有限公司 | 集成凸轮轴 |
US10473206B2 (en) | 2015-07-02 | 2019-11-12 | Deere & Company | Transmission vent |
DE102016008299B4 (de) * | 2016-07-06 | 2020-12-31 | Neander Motors Ag | Ölabscheideeinrichtung für eine Brennkraftmaschine |
US11719326B2 (en) * | 2021-04-19 | 2023-08-08 | The Boeing Company | Demister for a gearing system and method |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4049401A (en) * | 1975-02-10 | 1977-09-20 | Rolls-Royce (1971) Limited | Apparatus for separating suspensions of liquids in gas |
US4651704A (en) * | 1985-01-30 | 1987-03-24 | Honda Giken Kogyo Kabushiki Kaisha | Breather arrangement for cam case of internal combustion engine |
JPH03160107A (ja) * | 1989-11-15 | 1991-07-10 | Honda Motor Co Ltd | 頭上弁型エンジンにおけるブリーザ装置 |
US5261380A (en) * | 1992-07-15 | 1993-11-16 | Ford Motor Company | Crankcase ventilation system for automotive engine |
JPH08177450A (ja) * | 1994-12-22 | 1996-07-09 | Ryobi Ltd | ブロ−バイガスの気液分離装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1590886A (de) * | 1968-11-06 | 1970-04-20 | ||
DE4237128A1 (de) * | 1992-11-03 | 1994-01-27 | Bayerische Motoren Werke Ag | Kurbelgehäuseentlüftung mit einer Zentrifuge |
DE19706383C2 (de) * | 1997-02-19 | 2000-05-18 | Daimler Chrysler Ag | Entlüftungsvorrichtung für ein Kurbelgehäuse einer Brennkraftmaschine |
DE19803872C2 (de) * | 1998-01-31 | 2001-05-10 | Daimler Chrysler Ag | Entlüfungsvorrichtung für ein Kurbelgehäuse einer Brennkraftmaschine |
-
1999
- 1999-07-08 DE DE19931740A patent/DE19931740C2/de not_active Expired - Fee Related
-
2000
- 2000-05-20 EP EP00938662A patent/EP1194680B1/de not_active Expired - Lifetime
- 2000-05-20 WO PCT/EP2000/004586 patent/WO2001004464A1/de active IP Right Grant
-
2002
- 2002-01-07 US US10/041,969 patent/US6502565B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4049401A (en) * | 1975-02-10 | 1977-09-20 | Rolls-Royce (1971) Limited | Apparatus for separating suspensions of liquids in gas |
US4651704A (en) * | 1985-01-30 | 1987-03-24 | Honda Giken Kogyo Kabushiki Kaisha | Breather arrangement for cam case of internal combustion engine |
JPH03160107A (ja) * | 1989-11-15 | 1991-07-10 | Honda Motor Co Ltd | 頭上弁型エンジンにおけるブリーザ装置 |
US5261380A (en) * | 1992-07-15 | 1993-11-16 | Ford Motor Company | Crankcase ventilation system for automotive engine |
JPH08177450A (ja) * | 1994-12-22 | 1996-07-09 | Ryobi Ltd | ブロ−バイガスの気液分離装置 |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 015, no. 393 (M - 1165) 4 October 1991 (1991-10-04) * |
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 11 29 November 1996 (1996-11-29) * |
Also Published As
Publication number | Publication date |
---|---|
EP1194680A1 (de) | 2002-04-10 |
EP1194680B1 (de) | 2005-03-02 |
US6502565B2 (en) | 2003-01-07 |
DE19931740C2 (de) | 2001-06-13 |
DE19931740A1 (de) | 2001-01-18 |
US20020083933A1 (en) | 2002-07-04 |
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