EP1866525A1 - Compensating shaft module - Google Patents
Compensating shaft moduleInfo
- Publication number
- EP1866525A1 EP1866525A1 EP06707467A EP06707467A EP1866525A1 EP 1866525 A1 EP1866525 A1 EP 1866525A1 EP 06707467 A EP06707467 A EP 06707467A EP 06707467 A EP06707467 A EP 06707467A EP 1866525 A1 EP1866525 A1 EP 1866525A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- module according
- shaft
- balance shaft
- balancing
- 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
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
-
- 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
- F02B75/00—Other engines
- F02B75/06—Engines with means for equalising torque
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S55/00—Gas separation
- Y10S55/19—Crankcase ventilation
Definitions
- the invention relates to a balance shaft module of an internal combustion engine of a motor vehicle or the like, with a balancer shaft and a balance shaft at least partially receiving and holding by means of bearings cartridge, wherein the cartridge has at least one raw blow-gas inlet opening, which communicates with a centrifugal separator of the balancer shaft stands and with a promotion of the blow-by gas inside the balancing shaft vorikiden conveyor, the impeller is disposed on the balancer shaft, the downstream of the conveyor has at least one clean-blowby gas outlet opening.
- balance shafts in internal combustion engines of motor vehicles or the like to compensate for the crankshaft mass forces.
- Such balance shafts can also alternatively or additionally create a gas-force balance.
- the invention has for its object to expand the application of a balancer shaft, so that more functions are taken over in particular with a simple structure and safe operation.
- a balancing shaft module of an internal combustion engine of a motor vehicle or the like in that the module is provided with a balancing shaft and a cartridge accommodating the balance shaft at least partially and held by means of bearings, the cartridge having at least one raw blow-by gas inlet opening, which is in communication with a centrifugal separator of the balancer shaft and with a promotion of the blow-by gas inside the balancer shaft undertaking conveyor whose impeller is arranged on the balancer shaft having downstream of the conveyor at least one clean-blowby gas outlet opening.
- the balancer shaft not only takes over a mass-force and / or gas-force compensation, but blows back blowby gas to the intake and / or a supercharger of the internal combustion engine, this being done in a relatively short path and in a relatively high-temperature zone of the internal combustion engine.
- the blow-by gas is caused by unavoidable leaks in the combustion chambers of the internal combustion engine, that is, the past the piston ring of the internal combustion engine in the interior of the engine and thus in Blowby gas reaching the crankcase is returned via the balancer shaft, resulting in a simple solution with very small space requirements, low mass use and low costs.
- the balance shaft module in addition to the balance shaft on the cartridge, in which the balance shaft is received by means of bearings rotating.
- the balance shaft rotates during operation while the cartridge is stationary.
- this has the at least one raw blow-by gas inlet opening, which is in communication with a centrifugal separator of the balancer shaft. Entered raw, blowby gas thus passes to the centrifugal separator, which are deposited by centrifugal force in the gas-containing particles, in particular oil droplets.
- the clean blowby gas can be supplied to the intake tract and / or the supercharger of the internal combustion engine.
- the promotion of the blow-by gas takes over a conveyor of the balance shaft module, wherein the impeller of the conveyor on the compensation? is wave, so it is arranged rotatably on it and thus has the same speed as the balance shaft.
- the rotation of the balance shaft is thus used for the promotion of the blow-by gas. It must always be ensured that there is a negative pressure in relation to the pressure conditions in the interior of the crankcase within the balance shaft in order to generate the desired blowby gas flow and to let it out of the clean blowby gas outlet opening.
- a development of the invention provides that the conveyor is a pump, in particular a side channel pump.
- the impeller of the pump is driven by means of the balance shaft.
- the fixed parts of the pump, so the pump housing is fixed to it and belongs in particular to the cartridge.
- the centrifugal separator is a centrifugal oil separator.
- the raw blow-by gas is provided in particular with the finest oil droplets, which are largely separated off by means of the centrifugal oil separator, so that the loaded raw blow-by gas becomes clean blowby gas.
- the separated oil droplets are returned to the oil circuit of the internal combustion engine.
- a development of the invention provides that the centrifugal separator at least one arranged on a balance shaft element of the balance shaft spinner
- the spin element is a screw conveyor.
- the wall of the auger performs a dual function by one hand serves as a centrifugal element and thus attaches particular oil droplets and radially dissipates, the oil droplets are finally collected as an oil film on the inside of the cartridge and on the other hand, the conveying effect of the screw conveyor causes this oil film in Direction is promoted to the raw blow-by gas inlet opening, so that the collected oil leak there and can be guided to the lubricant sump of the engine.
- the output end of the screw conveyor is in the region of the raw blow-by gas inlet opening in order to return the separated oil to the crankcase.
- a development of the invention provides that within the balance shaft by the gas conveying effect of the conveyor and against the gas flow of the centrifugal separator at each speed of the balancer shaft, a negative pressure relative to the gas pressure in the crankcase of the engine is created.
- the conveyor accordingly provides for a vacuum generation in the balance shaft, wherein the centrifugal separator not only separates the particles from the blow-by gas, but in particular due to its particle conveying effect, especially when a screw conveyor is present, thereby a gas conveying effect is effected, however, against Gas conveying effect of the conveyor acts.
- the arrangement must therefore always be made so that the gas conveying effect of the conveyor over the gas conveying action of the centrifugal separator outweighs to create the desired negative pressure in the balancer shaft, so that the blow-by gas flows in the crankcase in the interior of the balancer shaft.
- This vacuum effect which is necessary for the gas delivery, must be ensured at each speed of the balancer shaft and, accordingly, at each speed of the internal combustion engine. If the internal combustion engine has a higher rotational speed, then the pressure of the blow-by gas increases in the crankcase, since the amount of blowby gas increases. Accordingly, the subsidy
- the effect can be increased within the balance shaft to create a pressure gradient between the gas pressure in the crankcase and the gas pressure in the balancer shaft.
- the raw blow-by gas inlet opening is a radial opening.
- a plurality of inlet openings are provided, which are distributed over the circumference of the cartridge spaced from each other.
- the clean blowby gas outlet opening is located on the balance shaft, preferably at the end of the balance shaft element, which is designed in particular as a hollow shaft or as a balance shaft tube.
- the screw conveyor has two oppositely coiled screw conveyor sections, wherein the respective output ends of the screw conveyor sections are each associated with at least one raw blow-by gas inlet opening.
- the conveying direction of the two screw conveyor sections are in opposite directions, that is to say separated particles become approximately from the center of the screw conveyor composed of the two screw conveyor sections, either from one screw conveyor section towards one end of the balancing shaft or from the other conveyor screw section towards the other end of the balancing shaft transported to each to reach the associated raw-blowby gas inlet opening and exit there, that is, the respective raw blow-by gas inlet opening therefore forms a particle outlet opening for the deposited particles.
- the raw gas which has entered through the raw blow-by gas inlet flows along a channel formed between the cartridge and the balance shaft element as far as the inlet section of the conveyor screw or to inlet sections of the screw conveyor sections and at least one of the balancing shaft elements in the region of the inlet section or the inlet sections having in the interior of the balance shaft element leading gas opening. Due to this gas guide the most intensive possible contact of the raw gas is ensured with the centrifugal separator to make the most effective gas cleaning can.
- the cleaned gas passes through the leading into the interior of the balance shaft member gas opening in an axial passage, preferably a central channel coaxial with the axis of rotation of the balance shaft to be promoted from there via the conveyor to the clean blow-gas outlet opening.
- the channel is formed in the region of spacers carrying the screw conveyor on the balance shaft element. Accordingly, it is an annular channel whose axial length corresponds to the length of the screw conveyor or the respective screw conveyor sections. It is formed between the lateral surface of the balance shaft element, so the balance shaft tube and the centrifugal element of the centrifugal separator. By the spacers sufficient spaces are created so that the gas flow and the deposition of the particles can be done.
- a development of the invention provides that the conveyor has a conveyor housing, which is associated with the cartridge and therefore stands still during operation.
- the conveyor housing of the conveyor in particular side channel pump, has tuned to the arranged on the balance shaft impeller gas supply and Gasab Science Proceedings.
- the input side of the conveyor housing is connected to the interior of the balance shaft element via at least one gas outlet opening radially penetrating the balance shaft element , So that the gas flow from the impeller can again enter into the interior of the balancing shaft, the output side of the conveyor housing is connected to the interior of the balancing shaft element via at least one gas inlet opening radially penetrating the balancing shaft element.
- a plurality of spaced apart, circumferentially arranged on the balance shaft element gas outlet openings and gas inlet openings are provided.
- a development of the invention provides that the interior of the balance shaft between the gas inlet opening and the gas outlet opening has an axial closure, so that the conveyor is not short-circuited, so that no bypass is created for the conveyor.
- bearings of the balancing shaft are arranged in such a way that bearing lubricant exiting from them reaches the raw blow-by gas inlet opening.
- bearing lubricant in particular oil, is also returned to the lubricant circuit of the internal combustion engine.
- a further development of the invention provides at least one bearing lubricant channel assigned to the cartridge and leading to the raw blowby gas inlet opening.
- This bearing lubricant channel can bridge the bearing axially. As a result, bearing lubricant is conveyed from one bearing side to the other bearing side in order to reach the raw blow-by gas inlet opening located there.
- the clean blowby gas outlet opening is connected to a suction pipe and / or a supercharger of the internal combustion engine in order to supply the blowby gas to the intake tract or supercharger tract.
- Figure 1 shows a longitudinal section through a balance shaft module
- Figure 2 is an end view of the balance shaft module of Figure 1 in the direction of arrow I of Figure 1, wherein a partially cutaway representation is present.
- FIGS 1 and 2 show a balance shaft module 1 for an internal combustion engine of a motor vehicle or the like.
- the balancing shaft module 1 has a balancing shaft 2 and a cartridge 3 which is stationary when the balancing shaft 2 rotates.
- the balance shaft 2 is rotatably mounted in the cartridge 3 by means of bearings 4, 5 and 6.
- the balance shaft 2 has a balance shaft element 7 in the form of a balance shaft tube 8, which consequently forms a hollow shaft 9.
- Eccentrically to the axis of rotation 10 of the balancer shaft 2 a balance weight 12 is disposed in its interior 11.
- the rotary drive of the balancer shaft 2 via a rotatably connected thereto drive gear 13, which is arranged on a protruding from the cartridge 3 hollow shaft stub 14.
- the balance shaft tube 8 has a cylindrical portion 15, which merges into a conically widening portion 16. This is followed by a cylindrical section 17, which has a larger diameter than the cylindrical section 15 and which merges into a conically decreasing section 18. This is followed by a cylindrical portion 19. This has the same diameter as the cylindrical portion 15. This is followed by a conically decreasing section 20, followed by a cylindrical section, which merges into a slightly smaller diameter in the cylindrical portion 22, to which a diameter even smaller cylindrical portion 23 connects, which forms the hollow shaft stub 14.
- GR-ne-lt 17th February 2005 3 is tubular and has a cylindrical portion 24 which merges at one end into a smaller diameter cylindrical portion 25 and the other end portion 26 is axially closed by means of the bearing 6.
- a mounting bracket 28 is provided in the region of this front end 27, which has a mounting opening 29 for a fastener, such as a threaded screw.
- the cylindrical portion 15 of the balance shaft tube 8 is sealed by means of a closure element 30.
- an axial lock 31 is arranged in the region of the cylindrical portion 15;
- the bearing 5 is arranged in the region of the cylindrical portion 19 and the bearing 6 in an area adjacent to the cylindrical portion 23 of the cylindrical portion 22.
- the cartridge 3 has a plurality of circumferentially spaced, circumferentially spaced raw blowby gas inlet openings 32 distributed over the circumference.
- the cartridge 3 In the region of the cylindrical portion 17, adjacent to the conical portion 18, the cartridge 3 has a plurality of circumferentially spaced raw blowby gas inlet openings 33 spaced from one another.
- the hollow shaft stub 14 associated end of the balance shaft tube 8 is formed axially open, so that there is a clean blow-gas outlet opening 34 is formed, which is hereinafter referred to for simplicity as the outlet opening 34.
- the transition zone of the cylindrical portion 21 and the cylindrical portion 22 is associated with a conveyor 35 having a rotatably connected to the balance shaft tube 8 impeller 36 and a stationary, the cartridge 3 associated delivery housing 37 has, which extends on both sides of the impeller 36.
- the eccentric balance weight 12 is disposed in the interior 11 of the balance shaft tube 8.
- centrifugal separator 38 On the outside of the cylindrical portion 17 of the balance shaft tube 8 is a centrifugal separator 38, which is formed as a centrifugal oil separator 39 and a centrifugal element 40 in the form of a screw conveyor 41, which is formed by two oppositely wound screw conveyor sections 42 and 43.
- the helix 44 of the screw conveyor 41 is formed inclined in the same direction over the entire length of the centrifugal separator 38, although the two screw conveyor sections 42 and 43 have different directions of conveyance, namely conveying directions pointing in opposite directions to produce this element in a mold, so that a problem-free Demoulding is possible.
- the two screw conveyor sections 42 and 43 each have an input section 45 and 46,
- the screw conveyor 41 is rotatably secured by means of spacers 49 on the outer circumferential surface of the cylindrical portion 17, so that between annular coil 44 and the outside of the balance shaft tube 8, an annular channel 50 is formed, which extends over the entire length of the screw conveyor 41 and communicating with the inlet openings 32nd and communicates with and communicates with gas ports 51 'associated with the central region of the screw conveyor 41, penetrating the balance shaft tube 8 and thereby establishing communication from the channel 50 into the interior 11 of the balance shaft tube 8.
- the coil 44 has an outer diameter which is slightly smaller than the free interior of the cartridge in the region of its cylindrical portion 24, so there is only a very small game to the coil 44.
- the pointing in the direction of the conveyor 35 side of the bearing 5 is a rotatably mounted on the balance shaft tube 8 slinger 51 opposite, with respect to the centrifugal disc 51 and the bearing 5, a small gap 52 is formed.
- the cylindrical portion 21 is penetrated by a plurality of circumferentially spaced gas outlet openings 53.
- Correspondingly formed and located gas inlet openings 54 are located in the region of the cylindrical portion 22, wherein the gas outlet openings 53 and the gas inlet openings 54 pass through the balance shaft tube 8.
- the gas outlet openings 53 lead into the interior of the conveyor housing 37 of the conveyor 35.
- the gas outlet openings 54 lead from the interior of the conveyor housing 37 into the interior 11 of the hollow shaft 9.
- the arrangement is such that the gas outlet openings 53 on one side of the axial shutter 31 and the Gas inlet openings 54 on the other side of the axial seal 31 are.
- the bearing 5 is penetrated by a plurality of circumferentially distributed arranged lubricant channels 55 which connect the gap 52 with the inlet openings 33.
- Outside the cartridge 3 is the interior of a crankcase 56 of an internal combustion engine, not shown, that is, the balance shaft module 1 is disposed in the interior of the crankcase 56.
- the outlet opening 34 leads to an intake tract, not shown, or a loader, not shown, of the internal combustion engine.
- the internal combustion engine of the motor vehicle drives the balancing shaft 2 via the drive gearwheel 13, which rotates in accordance with the rotational speed of the internal combustion engine and is supported by the bearings 4, 5 and 6 located inside the cartridge 3 , Due to this rotational movement of the balance shaft 2, the impeller 36 of the side channel pump 57 forming conveyor 35 is rotated, whereby in the interior 11 of the balance shaft tube 8, a negative pressure is created, which represents a pressure gradient to the interior of the crankcase 56. As a result, raw blowby gas escaping past the piston rings is sucked out of the cylinders of the internal combustion engine via the inlet openings 32 and 33.
- the blow-by gas enters the annular channel 50 and thus passes to the slinger 40 formed by the screw conveyor 41.
- the screw conveyor 41 is formed by two oppositely wound screw conveyor sections 42 and 43, particles, in particular oil droplets, deposited on the centrifugal element 40 are transported radially outwardly from the raw blowby gas and strike the inner surface of the cylindrical section 24 the cartridge 3 and are due to the conveying effect of the two screw conveyor sections 42 and 43 in the direction of the inlet openings 32 and 33 as constantly growing drops or a build-up lubricant film, in particular oil film transported. Finally, the lubricant film or oil film thus formed exits from the inlet openings 32 and 33, which consequently form particle outlet openings 58 and 59.
- the purified by the centrifugal separator 38 raw blow-by gas now enters as pure blowby gas through the gas holes 51 'in the interior 11 of the balance shaft tube 8 in the cylindrical portion 17 and passes due to the suction effect of the side channel pump 57 to the gas outlet 53.
- the Gas flow thus leaves the interior 11 of the balance shaft tube 8 radially and passes over the one side of the conveyor housing 37 to the impeller 36 and from there to the other side of the conveyor housing 37 and then enters radially inwardly through the gas inlet openings 54 again into the interior 11 of the balance shaft tube 8 and finally flows to the outlet opening 34 and arrives in this way in purified form to the intake tract of the internal combustion engine or to one or more superchargers located there.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005013803A DE102005013803A1 (en) | 2005-03-26 | 2005-03-26 | Balance shaft module |
PCT/EP2006/002104 WO2006102968A1 (en) | 2005-03-26 | 2006-03-08 | Compensating shaft module |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1866525A1 true EP1866525A1 (en) | 2007-12-19 |
EP1866525B1 EP1866525B1 (en) | 2009-01-14 |
Family
ID=36218447
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06707467A Not-in-force EP1866525B1 (en) | 2005-03-26 | 2006-03-08 | Compensating shaft module |
Country Status (6)
Country | Link |
---|---|
US (1) | US7632326B2 (en) |
EP (1) | EP1866525B1 (en) |
JP (1) | JP4859914B2 (en) |
CN (1) | CN101120158B (en) |
DE (2) | DE102005013803A1 (en) |
WO (1) | WO2006102968A1 (en) |
Families Citing this family (14)
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SE529609C2 (en) * | 2006-02-13 | 2007-10-02 | Alfa Laval Corp Ab | centrifugal |
US8166958B2 (en) * | 2007-08-15 | 2012-05-01 | GM Global Technology Operations LLC | Positive crankcase ventilation system for an internal combustion engine |
US7846228B1 (en) * | 2008-03-10 | 2010-12-07 | Research International, Inc. | Liquid particulate extraction device |
SE532500C2 (en) * | 2008-07-16 | 2010-02-09 | Alfa Laval Corp Ab | Centrifugal separator |
DE102008061058B4 (en) | 2008-12-08 | 2017-02-09 | Audi Ag | Multi-cylinder internal combustion engine |
JP5274412B2 (en) * | 2009-08-25 | 2013-08-28 | ダイハツ工業株式会社 | Balance device in internal combustion engine |
US8807097B2 (en) * | 2010-01-27 | 2014-08-19 | Cummins Filtration Ip Inc. | Closed crankcase ventilation system |
SE534773C2 (en) * | 2010-04-09 | 2011-12-13 | Alfa Laval Corp Ab | Centrifugal separator located inside an internal combustion engine |
DE112012004612B4 (en) | 2011-11-04 | 2022-05-25 | Cummins Filtration Ip, Inc. | Rotating separator with housing to prevent entrainment of separated liquid |
RU2495699C1 (en) * | 2012-02-03 | 2013-10-20 | Геннадий Владимирович Сироткин | Heat-and-mass exchanger |
DE102014222505A1 (en) * | 2014-06-10 | 2015-12-17 | Mahle International Gmbh | oil separator |
JP6879221B2 (en) * | 2018-01-12 | 2021-06-02 | トヨタ自動車株式会社 | Internal combustion engine |
DE102018009295A1 (en) | 2018-11-26 | 2020-05-28 | Daimler Ag | Crankcase ventilation for venting a crankcase of an internal combustion engine, in particular for a motor vehicle |
DE102023000401A1 (en) * | 2023-02-09 | 2024-08-14 | Deere & Company | CRANKCASE WITH INNER AND OUTER COOLANT JACKET |
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JPS6127909A (en) * | 1984-07-17 | 1986-02-07 | Shiseido Co Ltd | External drug for skin |
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-
2005
- 2005-03-26 DE DE102005013803A patent/DE102005013803A1/en not_active Withdrawn
-
2006
- 2006-03-08 EP EP06707467A patent/EP1866525B1/en not_active Not-in-force
- 2006-03-08 JP JP2008502275A patent/JP4859914B2/en not_active Expired - Fee Related
- 2006-03-08 CN CN2006800052368A patent/CN101120158B/en not_active Expired - Fee Related
- 2006-03-08 WO PCT/EP2006/002104 patent/WO2006102968A1/en not_active Application Discontinuation
- 2006-03-08 US US11/887,067 patent/US7632326B2/en not_active Expired - Fee Related
- 2006-03-08 DE DE502006002657T patent/DE502006002657D1/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2006102968A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP4859914B2 (en) | 2012-01-25 |
DE102005013803A1 (en) | 2006-09-28 |
WO2006102968A1 (en) | 2006-10-05 |
DE502006002657D1 (en) | 2009-03-05 |
US20090049807A1 (en) | 2009-02-26 |
CN101120158B (en) | 2010-04-21 |
JP2008534833A (en) | 2008-08-28 |
CN101120158A (en) | 2008-02-06 |
EP1866525B1 (en) | 2009-01-14 |
US7632326B2 (en) | 2009-12-15 |
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