EP1194680A1 - Hubkolbenbrennkraftmaschine mit einer nockenwelle - Google Patents
Hubkolbenbrennkraftmaschine mit einer nockenwelleInfo
- Publication number
- EP1194680A1 EP1194680A1 EP00938662A EP00938662A EP1194680A1 EP 1194680 A1 EP1194680 A1 EP 1194680A1 EP 00938662 A EP00938662 A EP 00938662A EP 00938662 A EP00938662 A EP 00938662A EP 1194680 A1 EP1194680 A1 EP 1194680A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- camshaft
- internal combustion
- combustion engine
- reciprocating internal
- bore
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 23
- 238000009423 ventilation Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 15
- 239000003921 oil Substances 0.000 description 10
- 239000010687 lubricating oil Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
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)
- Valve-Gear Or Valve Arrangements (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19931740 | 1999-07-08 | ||
| DE19931740A DE19931740C2 (de) | 1999-07-08 | 1999-07-08 | Hubkolbenbrennkraftmaschine mit einer Nockenwelle |
| PCT/EP2000/004586 WO2001004464A1 (de) | 1999-07-08 | 2000-05-20 | Hubkolbenbrennkraftmaschine mit einer nockenwelle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1194680A1 true EP1194680A1 (de) | 2002-04-10 |
| EP1194680B1 EP1194680B1 (de) | 2005-03-02 |
Family
ID=7914023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00938662A Expired - Lifetime EP1194680B1 (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 |
|---|---|---|---|---|
| US6758197B2 (en) | 2000-09-01 | 2004-07-06 | Bombardier-Rotax Gmbh | Blow-by gas separator and decompressor for an internal combustion engine |
| AU2001290604A1 (en) * | 2000-09-01 | 2002-03-13 | Bombardier Inc. | Continuously variable transmission 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 |
| DE502006007644D1 (de) | 2005-05-10 | 2010-09-23 | Mahle Int Gmbh | In eine axial hohle welle eines verbrennungsmotors integrierte zentrifugal-ölnebelabscheidereinrichtung |
| 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 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1590886A (de) * | 1968-11-06 | 1970-04-20 | ||
| GB1508212A (en) * | 1975-02-10 | 1978-04-19 | Rolls Royce | Apparatus for separating suspension of liquids in gas |
| JPS61175213A (ja) * | 1985-01-30 | 1986-08-06 | Honda Motor Co Ltd | エンジンにおけるカムケ−スのブリ−ザ装置 |
| 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 |
| DE4237128A1 (de) * | 1992-11-03 | 1994-01-27 | Bayerische Motoren Werke Ag | Kurbelgehäuseentlüftung mit einer Zentrifuge |
| JP2769984B2 (ja) * | 1994-12-22 | 1998-06-25 | リョービ株式会社 | ブローバイガスの排出構造 |
| 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 WO PCT/EP2000/004586 patent/WO2001004464A1/de not_active Ceased
- 2000-05-20 EP EP00938662A patent/EP1194680B1/de not_active Expired - Lifetime
-
2002
- 2002-01-07 US US10/041,969 patent/US6502565B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0104464A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1194680B1 (de) | 2005-03-02 |
| US20020083933A1 (en) | 2002-07-04 |
| DE19931740A1 (de) | 2001-01-18 |
| DE19931740C2 (de) | 2001-06-13 |
| WO2001004464A1 (de) | 2001-01-18 |
| US6502565B2 (en) | 2003-01-07 |
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