EP2788596A1 - Internal combustion engine and method for operating an internal combustion engine - Google Patents
Internal combustion engine and method for operating an internal combustion engineInfo
- Publication number
- EP2788596A1 EP2788596A1 EP12799157.8A EP12799157A EP2788596A1 EP 2788596 A1 EP2788596 A1 EP 2788596A1 EP 12799157 A EP12799157 A EP 12799157A EP 2788596 A1 EP2788596 A1 EP 2788596A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- crankcase
- gas
- internal combustion
- combustion engine
- oil
- 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 33
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000003595 mist Substances 0.000 claims abstract description 38
- 239000007921 spray Substances 0.000 claims abstract description 11
- 238000005507 spraying Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 82
- 238000004064 recycling Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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
Definitions
- the invention relates to a method for operating an internal combustion engine in which a fine oil mist-containing blowby flow is removed by a gas recirculation device from a crankcase and the charge air is supplied, wherein the blowby flow is treated when passing through an arranged in the gas recirculation oil separator.
- crankcase Under blowby is understood in an internal combustion engine, also called internal combustion engine or piston engine, which in the compression of the piston rings from the working space in the engine room bypassing gas. During compression, unburned fuels penetrate into the crankcase. During the combustion cycle hot and often contaminated with aggressive pollutants gas enters the crankcase. Due to a permanent influence of the blowby gas, the engine oil can be heavily loaded. To reduce this load and the gas pressure in the crankcase, the crankcase is vented. The venting is usually via a gas recirculation device, which via a
- Gas outlet is connected to the crankcase.
- the gas recovery device directs the blowby gas mostly to the air filter box or to another point of the
- Crankcase also entrained oil drops.
- this can cause severe contamination of the components, such as throttle valve, turbocharger or valves.
- contamination with oil can lead to performance losses and disruptions.
- a device for treating the blow-by gas in particular an oil separator, is arranged in the gas recycling device.
- passive oil separators such as inertial separators, are used. These are inexpensive, robust and low maintenance.
- the individual oil drops in the blowby gas must not have a minimum body diameter
- Piston cooling nozzles Oltropfen sprayed to the piston head Piston cooling nozzles Oltropfen sprayed to the piston head.
- the invention has the object, a method of the type mentioned in such a way that the amount of entrained oil, especially small Oltropfen in the blowby flow, as much as possible before entering the blow-by flow in the fresh gas side of the engine becomes.
- a method in which a coarse oil mist is moved into the blowby flow before and / or during the treatment in the oil separator.
- a coarse oil mist By entering and moving large drops of oil in the blowby flow, small drops of oil in the blowby flow are bound to the large drops of oil. At the same time, the small drops of oil attach themselves to the large ones.
- the large oil droplets can be easily and effectively separated from the blowby flow with passive oil separators, such as deflector plates or baffle plates.
- the fine oil mist consists of small Oltropfen with a body diameter less than ten microns.
- the coarse oil mist is made up of large oil drops whose body diameter is greater than or equal to ten microns. According to the fine oil mist is thrown with large Oltropfen.
- the small drops of oil from the fine oil mist agglomerate on these large drops of oil.
- an internal combustion engine is further provided, wherein in the
- a spraying device for generating a coarse oil mist is arranged.
- an internal combustion engine is furthermore provided, in which guide elements for forming and maintaining a gas cylinder are arranged in the crankcase are.
- the gas roller is suitable for generating and / or accelerating a Grobolnebel.
- crankcase in particular before and / or during the discharge of the blow-by flow from the crankcase, is moved into the blowby flow. This makes it possible to use internal engine measures for generating and accelerating the large oil droplets and / or to exploit internal engine effects.
- the Grobolnebel is generated and / or accelerated by a moving in the crankcase to the crankshaft of the internal combustion engine gas roller.
- the movement of the crankshaft creates a gas roller in the crankcase.
- These large drops of oil are lifted, for example, from the crankshaft, from the inner wall of the crankcase, from the connecting rod or specially shaped guide elements or entrained when crossing the crankcase. Oil droplets traverse the crankcase as they drip or hurl gravity into the interior of the crankcase or are thrown into it.
- the inertial forces acting on the large oil droplets cause them to be ejected from the gas cylinder. They leave the gas roller in a direction which is approximately tangential to the rotational movement of the gas cylinder and which is oriented in the direction of rotation of the gas cylinder.
- a gas outlet opening for the blowby flow is arranged in the crank chamber so that the large oil droplets penetrate into the blowby flow when leaving the gas cylinder.
- the fine oil mist is thrown with large drops of oil, whereby the small drops of oil are bound.
- the Grobolnebel is moved in the blowby flow largely parallel to the blowby flow. This results in a long residence time of the coarse oil mist in the blowby flow, which allows many of the small oil droplets to agglomerate on the large oil droplets.
- guide elements are arranged in the crankcase, which promote a circulation of the gas volume around the crankshaft.
- the guide elements are concavely curved toward the crankshaft or arranged along a track concavely curved towards the crankshaft.
- oil planer and baffle are designed, which the oil pan of the
- a further advantageous embodiment of the invention is that the Grobolnebel is generated and / or accelerated by means of a spray device.
- the spray device for generating large drops of oil is preferably arranged in the crankcase.
- the spray device is directed to the blowby flow and / or gas outlet.
- the spraying device outside the crankcase, for example in the oil separator or behind the gas outlet opening, directed towards the crankcase.
- Fig. 1 is a schematic representation of a first embodiment of an internal combustion engine
- Fig. 2 is a schematic representation of a first design variant of a second
- Fig. 3 is a schematic representation of a second design variant of a second
- Fig. 4 is a schematic representation of the principle underlying the invention.
- Figures 1, 2 and 3 show an internal combustion engine 1 with a crankcase 2, in which a crankshaft 3 is arranged to be movable about a rotation axis, not shown.
- the crankcase 2 is limited in the configuration of the internal combustion engine 1 shown here on one side by an oil pan 4 and on the other side by a cylinder 5.
- the invention may also be applied to other configurations of an internal combustion engine 1, such as a V-type engine or a Boxer engine.
- a piston 6 is arranged translationally movable.
- the piston 6 closes the working space 7 of the internal combustion engine 1 with respect to the crankcase 2.
- a connecting rod 8 also referred to as a drive rod, the piston 6 and the crankshaft 3 are connected.
- Blowby gas which passes past the piston 6 into the crankcase 2, is indicated by means of small arrows as a blowby flow 10.
- the blowby flow 10 is via a Gas return device 1 1 of the not shown fresh gas side of the internal combustion engine 1 fed.
- a channel cross-section 12 is indicated and an oil separator 13 is shown.
- the gas recycling device 1 1 is over a
- Crankcase 2 vanes 14 arranged, for example, a baffle or an oil planer.
- oil separated from the blowby flow 10 flows via an oil return 18 into the oil sump 4.
- Figure 1 shows a first embodiment of the internal combustion engine 1.
- Embodiment is formed by the rotational movement of the crankshaft 3 and due to the arrangement and shape of the guide elements 14 in the crankcase 2, a gas roller 15 and maintained.
- the gas cylinder 15 is indicated by a large arrow.
- Coarse oil mist 16 is indicated by a thick, black arrow and is further explained in Figure 4.
- the small oil droplets in the blow-by flow 10 form a fine oil mist 17 shown in more detail in FIG. 4.
- the small oil droplets deposit on the large oil droplets.
- the large oil drops can easily and effectively in the passive oil separator 13 from the blow-by flow 10th
- Figures 2 and 3 show two design variants of a second embodiment of the internal combustion engine 1.
- crankcase 2 a in the crankcase 2 a
- Spray device 19 arranged to produce a coarse oil mist 16.
- the first design variant is shown.
- the spray device 19 is on one of
- FIG. 4 shows a schematic representation of the principle underlying the invention.
- a coarse oil mist 16 is moved by a fine oil mist 17.
- the coarse oil mist 16 consists of numerous large Oltropfen whose body diameter is greater than or equal to ten microns.
- Movement direction 20 of the coarse oil mist 16 is indicated by means of an arrow group.
- coarse oil mist 16 and fine oil mist 17 meet the small Oltropfen agglomerate on the large Oltropfen.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011120782A DE102011120782A1 (en) | 2011-12-09 | 2011-12-09 | Internal combustion engine and method for operating an internal combustion engine |
PCT/EP2012/074762 WO2013083765A1 (en) | 2011-12-09 | 2012-12-07 | Internal combustion engine and method for operating an internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2788596A1 true EP2788596A1 (en) | 2014-10-15 |
EP2788596B1 EP2788596B1 (en) | 2019-05-01 |
Family
ID=47351639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12799157.8A Active EP2788596B1 (en) | 2011-12-09 | 2012-12-07 | Engine and method of operating such engine |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2788596B1 (en) |
KR (1) | KR101647906B1 (en) |
CN (1) | CN103958841B (en) |
DE (1) | DE102011120782A1 (en) |
WO (1) | WO2013083765A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2524013B (en) | 2014-03-10 | 2018-07-25 | Ford Global Tech Llc | Crankcase oil catcher |
DE102017203268A1 (en) | 2017-03-01 | 2018-09-06 | Bayerische Motoren Werke Aktiengesellschaft | Device for separating particles from a gas stream for an internal combustion engine |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3052365B2 (en) * | 1990-10-24 | 2000-06-12 | スズキ株式会社 | Engine breather structure |
JP2551974Y2 (en) * | 1991-07-11 | 1997-10-27 | 三菱自動車工業株式会社 | Lubricating oil return path structure with baffle plate |
DE4139195C2 (en) * | 1991-11-28 | 1999-05-27 | Audi Ag | Oil pan insert |
DE10063903A1 (en) * | 2000-12-21 | 2002-07-04 | Mann & Hummel Filter | Free jet centrifuge with integrated oil separator |
DE20103652U1 (en) * | 2001-03-02 | 2002-07-04 | Hengst Walter Gmbh & Co Kg | Device for de-oiling the crankcase ventilation gas of an internal combustion engine |
SE527725C2 (en) * | 2003-01-02 | 2006-05-23 | Karl-Gunnar Karlsson | Device for an internal combustion engine |
JP4415660B2 (en) * | 2003-12-08 | 2010-02-17 | 日産自動車株式会社 | Oil recovery structure for internal combustion engines |
JP2006152890A (en) * | 2004-11-29 | 2006-06-15 | Toyota Industries Corp | Oil separating structure and internal combustion engine |
JP4581829B2 (en) * | 2005-05-10 | 2010-11-17 | トヨタ自動車株式会社 | Oil separator and blow-by gas reduction device |
DE102006035888A1 (en) | 2006-07-31 | 2008-02-07 | Dr.Ing.H.C. F. Porsche Ag | Internal combustion engine |
JP2008267273A (en) * | 2007-04-20 | 2008-11-06 | Aisan Ind Co Ltd | Blow-by gas returning device |
SE531722C2 (en) * | 2007-08-28 | 2009-07-21 | Alfa Laval Tumba Ab | Centrifugal separator and process for purifying a gas |
JP2009121341A (en) * | 2007-11-14 | 2009-06-04 | Toyota Boshoku Corp | Crank room ventilation system |
JP2010096154A (en) * | 2008-10-20 | 2010-04-30 | Aichi Mach Ind Co Ltd | Vapor-liquid separating structure |
DE102009035895B4 (en) * | 2009-08-03 | 2012-05-16 | Mann + Hummel Gmbh | A filter assembly |
JP5131486B2 (en) * | 2009-09-03 | 2013-01-30 | 三菱自動車工業株式会社 | Blowby gas gas oil separator |
WO2013035154A1 (en) * | 2011-09-06 | 2013-03-14 | トヨタ自動車 株式会社 | Engine ventilation apparatus |
-
2011
- 2011-12-09 DE DE102011120782A patent/DE102011120782A1/en not_active Withdrawn
-
2012
- 2012-12-07 EP EP12799157.8A patent/EP2788596B1/en active Active
- 2012-12-07 WO PCT/EP2012/074762 patent/WO2013083765A1/en active Application Filing
- 2012-12-07 CN CN201280060544.6A patent/CN103958841B/en active Active
- 2012-12-07 KR KR1020147018883A patent/KR101647906B1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO2013083765A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2788596B1 (en) | 2019-05-01 |
KR101647906B1 (en) | 2016-08-23 |
CN103958841B (en) | 2016-10-26 |
CN103958841A (en) | 2014-07-30 |
WO2013083765A1 (en) | 2013-06-13 |
DE102011120782A1 (en) | 2013-06-13 |
KR20140106670A (en) | 2014-09-03 |
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