EP1788206A2 - Moteur à combustion interne avec un dispositif pour séparer l'huile du gaz de ventilation - Google Patents

Moteur à combustion interne avec un dispositif pour séparer l'huile du gaz de ventilation Download PDF

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Publication number
EP1788206A2
EP1788206A2 EP06022363A EP06022363A EP1788206A2 EP 1788206 A2 EP1788206 A2 EP 1788206A2 EP 06022363 A EP06022363 A EP 06022363A EP 06022363 A EP06022363 A EP 06022363A EP 1788206 A2 EP1788206 A2 EP 1788206A2
Authority
EP
European Patent Office
Prior art keywords
oil
internal combustion
combustion engine
delivery device
crankcase
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
Application number
EP06022363A
Other languages
German (de)
English (en)
Other versions
EP1788206A3 (fr
EP1788206B1 (fr
Inventor
May Thomas
Herdering Heinz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ing Walter Hengst GmbH and Co KG
Original Assignee
Ing Walter Hengst GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ing Walter Hengst GmbH and Co KG filed Critical Ing Walter Hengst GmbH and Co KG
Publication of EP1788206A2 publication Critical patent/EP1788206A2/fr
Publication of EP1788206A3 publication Critical patent/EP1788206A3/fr
Application granted granted Critical
Publication of EP1788206B1 publication Critical patent/EP1788206B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
    • F02B39/14—Lubrication of pumps; Safety measures therefor
    • 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
    • F01M1/00—Pressure lubrication
    • F01M1/12—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
    • 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
    • F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
    • F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
    • F01M13/022—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction
    • 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
    • F01M1/00—Pressure lubrication
    • F01M1/12—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
    • F01M2001/123—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10 using two or more pumps
    • 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
    • F01M2013/0038—Layout of crankcase breathing systems
    • F01M2013/005—Layout of crankcase breathing systems having one or more deoilers
    • F01M2013/0061—Layout of crankcase breathing systems having one or more deoilers having a plurality of deoilers
    • 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
    • F01M2013/0488—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with oil trap in the return conduit to the crankcase

Definitions

  • the present invention relates to an internal combustion engine having means for separating oil from the crankcase ventilation gas of the internal combustion engine, with at least one crankcase ventilation line, in the course of which at least one oil separator is arranged with an oil outlet, of which an oil return line for separated from the crankcase ventilation gas to the engine, in particular the crankcase is guided, wherein in the course of the oil return line an oil delivery device is arranged and wherein the oil delivery device is an already existing on the engine oil delivery device, which is used in addition to the return of the separated oil separator in the oil.
  • crankcase ventilation line with at least one arranged in the course of oil separator.
  • Venting a pressure control valve to maintain the pressure in the crankcase in a desired pressure range.
  • crankcase ventilation gas In the oil separator entrained in the crankcase ventilation gas entrained oil components are as far as possible.
  • the de-oiled crankcase ventilation gas is then usually supplied to the intake tract of the internal combustion engine.
  • the separated in the oil separator oil from the crankcase ventilation gas passes through an oil outlet of the oil separator in an oil return line, which leads back to the engine, especially the crankcase leads.
  • the DE-A 196 31 654 shows a venting device for the crankcase of an internal combustion engine.
  • the vent line are a vent valve and an oil separator. From the oil separator leads an oil return line, possibly via a buffer memory, to the suction side of the lubrication points supplying lubricating oil pump of the internal combustion engine.
  • a disadvantage is considered in this proposal that the arrangement of the oil return line from the oil separator to the suction side of the lubricating oil pump is expensive, because usually the lubricating oil pump is deep inside the crankcase of the engine, while the oil separator usually on top of the engine, usually arranged in a cylinder head cover is. This unfavorably requires long cable routes and a line bushing from the outside into the crankcase.
  • the DE-A 41 01 203 shows a crankcase ventilation of an internal combustion engine.
  • a vent line is an oil separator with an oil collection area, which is connected via a return line to the oil reservoir of the internal combustion engine.
  • an auxiliary pump for discharging the oil.
  • a separate pump namely the auxiliary pump is required, which requires an additional manufacturing and installation costs as an additional component of the internal combustion engine and represents an additional wearing part.
  • the object is to provide an internal combustion engine of the type mentioned, in which the above-mentioned disadvantages are avoided and is achieved in particular in an economic but reliable manner that under all, even unfavorable circumstances a safe return of separated from the crankcase ventilation gas ⁇ 1 from the oil separator to the internal combustion engine, in particular back in the crankcase, is guaranteed.
  • the oil separated from the crankcase ventilation gas in the oil separator is actively conveyed to the internal combustion engine, in particular back into its crankcase, by the oil delivery device.
  • the oil delivery device By the oil delivery device, the oil is reliably conveyed back from the oil separator in any position of the oil separator relative to the crankcase of the internal combustion engine, so that arise relative to each other greater design freedom in terms of the arrangement of oil separator and crankcase of the internal combustion engine.
  • the promotion of the oil from the oil separator to the crankcase is no longer dependent on the pressure conditions that prevail on the one hand in the oil separator and on the other hand in the crankcase.
  • a safe oil return from the oil separator to the crankcase is with the invention in internal combustion engines with large crankcase ventilation gas flow rates, for example, in advanced wear, especially the piston rings, and supercharged internal combustion engines, as well as internal combustion engines in terrain or commercial vehicles, which moves under large and changing inclinations be ensured.
  • the invention utilizes the fact that in practice, more and more internal combustion engines are equipped with a turbocharger or compressor, wherein the turbocharger or compressor has a bearing housing, is collected in the leakage oil of the bearing lubrication of the turbocharger or compressor.
  • the device according to the invention uses the already existing on such an engine oil delivery device in the form of the suction pump for the bearing housing of the exhaust gas turbocharger or compressor of the engine, which is now also used in addition to the return of the oil separated in the oil separator.
  • the suction pump for the bearing housing of an exhaust gas turbocharger or compressor, which is now also used in addition to the return of the oil separated in the oil separator.
  • the oil return line may be connected to the bearing housing.
  • the first separated from the crankcase ventilation gas oil from the oil separator flows into the bearing housing of the exhaust gas turbocharger or compressor. From there, the separated from the crankcase ventilation gas ⁇ 1 is withdrawn together with the leakage oil of the exhaust gas turbocharger or compressor from the suction pump and the engine, especially in the crankcase, actively conveyed back.
  • the oil return line may be connected to a suction side of the suction pump, bypassing the bearing housing. Also in this embodiment the separated from the crankcase ventilation gas oil is active and thus reliably conveyed back from the oil separator to the engine or in the crankcase.
  • a vent line is expediently provided by the crankcase ventilation gas from the crankcase or from the crankcase ventilation line or fresh air from an intake tract of the internal combustion engine in the bearing housing is feasible.
  • An undesirable vacuum in the bearing housing, which would lead to an increase in oil leakage, is thus avoided.
  • the oil separator is of a type in which it is not harmful when a partial flow of the crankcase ventilation gas is withdrawn through the oil outlet, the ventilation of the bearing housing can also be made in this way via the oil return line.
  • a solution with a separate ventilation duct is useful if the oil separator is of a type in which it is not permissible to withdraw a partial flow of the crankcase ventilation gas through the oil outlet; this is the case, for example, with an oil separator designed as a cyclone.
  • a plurality of oil separators may be provided on an internal combustion engine, which are arranged in series and / or parallel connection.
  • the plurality of oil separators each associated with an oil return line and at least in the course of one of the oil return lines, the oil delivery device is provided.
  • the one of the plurality of oil return lines that selected for the arrangement of the oil delivery device in which the largest amounts of oiltechnischzu birthdayndem occur during operation of the internal combustion engine.
  • This can be, for example, a coarse oil separator, which is connected upstream of a fine oil separator. The amount of deposited oil remaining in the fine oil separator is often so low in practice that an active oil delivery device is not required for this purpose.
  • An alternative embodiment of the invention which is also intended for internal combustion engines having a plurality of oil separators, proposes that the oil outlets of the plurality of oil separators are combined to form a common oil return line and that the oil delivery device is provided in the course of the common oil return line.
  • the oil is collected from all oil separators and actively fed back to the engine or its crankcase by means of a single oil delivery device, so that it does not matter here, at which the oil separator of the largest amount of oil is obtained.
  • the amount of oil that accumulates per oil separator depending on operating conditions of the engine varies greatly and thereby changes the oil separator with the largest accumulation of separated oil.
  • a throttle is expediently arranged in the course of the oil return line upstream of the oil delivery device.
  • this volume flow can be composed solely of oil or oil and a partial flow of the crankcase ventilation gas.
  • the throttle can also be made adjustable in its passage.
  • the throttle depending on various operating conditions of the internal combustion engine via a device provided for this purpose, which may be integrated, for example, in an existing engine control electronics to adjust as needed during operation of the internal combustion engine.
  • a buffer storage volume for oil separated from the crankcase ventilation gas is provided in the course of the oil return line upstream of the oil conveyor.
  • oil can be temporarily stored without there being a transfer of oil to the clean gas side of the oil separator and thereby into the intake tract of the internal combustion engine.
  • the buffer volume is conveniently provided upstream of the throttle so as not to hinder the flow of oil from the oil separator into the buffer volume.
  • the buffer storage volume can be integrated in the oil separator.
  • the drive of the oil delivery device or oil delivery devices of the internal combustion engine can be done in different ways.
  • a first preferred embodiment provides in this regard that the oil delivery device has a derived from the internal combustion engine mechanical drive.
  • the oil delivery device is operated at a speed and power that depends on the crankshaft speed of the internal combustion engine.
  • the drive of the oil delivery device remains technically simple and provides in most applications a suitable performance.
  • the oil delivery device may have its own drive with constant or controllable power.
  • a drive with constant power is technically easier; a drive with adjustable power allows an adjustment according to the required flow rate.
  • the oil delivery device has its own drive, this is preferably an electric or hydraulic or pneumatic drive.
  • electrical energy is available from the vehicle electrical system.
  • a hydraulic drive for example, the lubricating oil of the internal combustion engine can be used.
  • Many commercial vehicles also have a hydraulic system that can be tapped to drive the oil delivery device.
  • a compressed air system is present, the compressed air is also suitable for operating a drive of the oil delivery device.
  • Figure 1 shows an internal combustion engine 1, which is equipped with an exhaust gas turbocharger 5.
  • the exhaust gas turbocharger 5 here has a bearing housing 50, in which leakage oil from the bearing lubrication of the exhaust gas turbocharger 5 collects.
  • crankcase ventilation line 2 Connected to the crankcase 10 of the internal combustion engine 1 is a crankcase ventilation line 2 which leads to the right towards an intake tract, not shown here, of the internal combustion engine 1.
  • an oil separator 20 is provided in the course of the crankcase ventilation line 2.
  • An oil outlet 23 of the oil separator 20 is connected to an oil return line 3.
  • the oil return line 3 leads from the oil outlet 23 of the oil separator 20 first into the bearing housing 50 of the exhaust gas turbocharger. 5
  • the oil coming from the oil separator 20 is combined with the leakage oil of the exhaust gas turbocharger 5. From the bearing housing 50 then performs a further portion of the oil return line 3 to the crankcase 10 of the internal combustion engine 1. In this second section of the oil return line 3 between the bearing housing 50 and the crankcase 10th an oil conveying device 4 is inserted.
  • This oil delivery device 4 is an oil pump, which may have a coupled to the internal combustion engine 1 mechanical drive or a separate drive.
  • the oil delivery device 4 In internal combustion engines 1 with an exhaust gas turbocharger 5 or with a compressor, the oil delivery device 4 already exists to suck the accumulating in the bearing housing 50 leakage oil of the exhaust gas turbocharger 5 and to lead into the crankcase 10 of the internal combustion engine 1.
  • the oil conveying device 4 which is present anyway for the leakage oil return from the exhaust gas turbocharger 5 is also used for the return of the oil separated from the crankcase ventilation gas in the oil separator 20.
  • an additional oil delivery device is not needed; Rather, advantageously in connection with the exhaust gas turbocharger 5 already existing oil delivery device 4 is used to actively promote the oil from the oil separator 20 to the crankcase 10 of the internal combustion engine 1.
  • FIG 2 shows an embodiment of an internal combustion engine 1, in which also an exhaust gas turbocharger 5 is provided. All individual parts, which has the embodiment of Figure 1, also has the embodiment of Figure 2 and reference is made in this regard to the description of the figures for Figure 1.
  • a separate ventilation line 51 is provided, which opens from the crankcase 10 of the internal combustion engine 1 into the section of the oil return line 3 lying upstream of the bearing housing 50.
  • This embodiment is useful or necessary when no partial flow of the crankcase ventilation gas from the vent line 2 can be diverted through the oil separator 20 and the oil outlet 23, because thereby affects the functions of the oil separator 20 and its efficiency would be unduly reduced. This is the case, for example, when the oil separator 20 is a cyclone separator.
  • vent line 51 is gas from the crankcase 10, bypassing the oil separator 20 upstream of the bearing housing 50 in the oil return line 3 and through this further to the bearing housing 50 feasible.
  • the ventilation line 51 from the crankcase 10 may also be guided directly into the bearing housing 50 here.
  • crankcase ventilation line 2 leads from the crankcase 10 of the internal combustion engine 1 to an intake tract, not shown here, of the internal combustion engine 1, in order to vent the crankcase 10.
  • the oil separator 20 is arranged here as well. With the oil outlet 23 of the oil separator 20, the oil return line 3 is also connected here again.
  • the internal combustion engine 1 includes an exhaust gas turbocharger 5, which has a bearing housing 50 for collecting oil leakage. Between the crankcase 10 of the internal combustion engine 1 and the bearing housing 50 of the exhaust gas turbocharger 5, a vent line 51 is provided through which crankcase gas from the crankcase 10 in the bearing housing 50 can be guided.
  • an oil suction line 53 is further connected, which is brought together at its downstream end with the coming of the oil outlet 23 of the oil separator 20 oil return line 3. Downstream of the merging of the oil return line 3 with the oil suction line 53, the oil feed device 4, again in the form of an oil pump, is provided here. From the oil conveyor 4, a last section of the oil return line 3 leads to the crankcase 10 of the internal combustion engine 1.
  • the oil return line 3 bypasses in its portion between the oil outlet 23 of the oil separator 20 and the oil conveyor 4, the bearing housing 50 of the exhaust gas turbocharger 5. Nevertheless, a single oil delivery device 4 is sufficient to both the oil separated in the oil separator 20 from the crankcase ventilation gas as Also, the resulting in the bearing housing 50 of the exhaust gas turbocharger 5 to promote active oil to the crankcase 10 of the internal combustion engine 1.
  • a buffer volume 32 is inserted into the oil return line 3 in order to be able to collect oil if required, when the amount of oil deposited in the oil separator 20 exceeds the quantity of oil that can be removed by the oil feed device 4. Since such operating conditions of the internal combustion engine 1 are to be expected only relatively rarely and then only for relatively short periods of time, sufficient for the buffer volume 32 is a relatively small size, which can easily accommodate within the entire device for the separation of oil from the crankcase ventilation gas.
  • a throttle 31 serves to the maximum flow of oil or oil and crankcase ventilation gas, which can be removed from the oil separator 20, on to limit a desired value. This is particularly avoided that crankcase ventilation gas in a large extent by the oil outlet 23 of the oil separator 20 from the crankcase ventilation gas flow, which flows through the vent line 2, is branched off.
  • the oil delivery device 4 may have a drive with constant power, since this also sufficient function is achieved. If necessary, a drive of the oil delivery device 4 can also be regulated in its performance in order to make a needs-based adjustment can.
  • the throttle 31 provided in the example according to FIG. 3 can be adjustable in order to enable control in this way.

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)
  • Supercharger (AREA)
EP06022363A 2005-11-17 2006-10-26 Moteur à combustion interne avec un dispositif pour séparer l'huile du gaz de ventilation Not-in-force EP1788206B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202005018132U DE202005018132U1 (de) 2005-11-17 2005-11-17 Brennkraftmaschine mit einer Einrichtung zum Abscheiden von Öl aus dem Kurbelgehäuseentlüftungsgas

Publications (3)

Publication Number Publication Date
EP1788206A2 true EP1788206A2 (fr) 2007-05-23
EP1788206A3 EP1788206A3 (fr) 2007-12-26
EP1788206B1 EP1788206B1 (fr) 2009-12-02

Family

ID=37561106

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06022363A Not-in-force EP1788206B1 (fr) 2005-11-17 2006-10-26 Moteur à combustion interne avec un dispositif pour séparer l'huile du gaz de ventilation

Country Status (3)

Country Link
EP (1) EP1788206B1 (fr)
AT (1) ATE450696T1 (fr)
DE (2) DE202005018132U1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009051848A1 (de) * 2009-10-28 2011-05-05 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Brennkraftmaschine
EP3578770A1 (fr) * 2018-06-04 2019-12-11 Mazda Motor Corporation Dispositif de blow-by d'un moteur équipé d'un surcompresseur
JP2019210930A (ja) * 2018-06-04 2019-12-12 マツダ株式会社 過給機付エンジンのブローバイガス装置
JP2019210847A (ja) * 2018-06-04 2019-12-12 マツダ株式会社 過給機付エンジン

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DE102007030277A1 (de) * 2007-06-28 2009-01-08 Mann + Hummel Gmbh Turbolader für eine Brennkraftmaschine
US7699029B2 (en) * 2007-07-26 2010-04-20 Cummins Filtration Ip, Inc. Crankcase ventilation system with pumped scavenged oil
DE102010009913A1 (de) * 2010-03-02 2011-09-08 Daimler Ag Verbrennungskraftmaschine
DE102011075933A1 (de) 2011-05-16 2012-11-22 Bayerische Motoren Werke Aktiengesellschaft Brennkraftmaschine
DE202013008611U1 (de) * 2013-09-26 2014-09-29 Reinz-Dichtungs-Gmbh Entlüftungssystem für aufgeladene Brennkraftmaschinen
DE102016220658A1 (de) 2016-10-21 2018-04-26 Bayerische Motoren Werke Aktiengesellschaft Ölabscheidevorrichtung

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009051848A1 (de) * 2009-10-28 2011-05-05 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Brennkraftmaschine
CN102052145A (zh) * 2009-10-28 2011-05-11 Dr.Ing.h.c.F.保时捷股份公司 内燃发动机
CN102052145B (zh) * 2009-10-28 2013-03-27 Dr.Ing.h.c.F.保时捷股份公司 内燃发动机
US8474259B2 (en) 2009-10-28 2013-07-02 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Internal combustion engine
EP3578770A1 (fr) * 2018-06-04 2019-12-11 Mazda Motor Corporation Dispositif de blow-by d'un moteur équipé d'un surcompresseur
JP2019210930A (ja) * 2018-06-04 2019-12-12 マツダ株式会社 過給機付エンジンのブローバイガス装置
JP2019210847A (ja) * 2018-06-04 2019-12-12 マツダ株式会社 過給機付エンジン
US10927752B2 (en) * 2018-06-04 2021-02-23 Mazda Motor Corporation Blow-by gas device of supercharger-equipped engine

Also Published As

Publication number Publication date
DE502006005500D1 (de) 2010-01-14
EP1788206A3 (fr) 2007-12-26
ATE450696T1 (de) 2009-12-15
DE202005018132U1 (de) 2007-03-29
EP1788206B1 (fr) 2009-12-02

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