WO2016074752A1 - Système de suralimentation pour un moteur à combustion interne, moteur à combustion interne correspondant et procédé pour faire fonctionner un moteur à combustion interne - Google Patents

Système de suralimentation pour un moteur à combustion interne, moteur à combustion interne correspondant et procédé pour faire fonctionner un moteur à combustion interne Download PDF

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Publication number
WO2016074752A1
WO2016074752A1 PCT/EP2015/001822 EP2015001822W WO2016074752A1 WO 2016074752 A1 WO2016074752 A1 WO 2016074752A1 EP 2015001822 W EP2015001822 W EP 2015001822W WO 2016074752 A1 WO2016074752 A1 WO 2016074752A1
Authority
WO
WIPO (PCT)
Prior art keywords
combustion engine
internal combustion
pressure
suction
compressor
Prior art date
Application number
PCT/EP2015/001822
Other languages
German (de)
English (en)
Inventor
Andre Keller
Guido Schiedt
Original Assignee
Audi Ag
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 Audi Ag filed Critical Audi Ag
Publication of WO2016074752A1 publication Critical patent/WO2016074752A1/fr

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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
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F02B37/16—Control of the pumps by bypassing charging air
    • 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
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F02B37/16—Control of the pumps by bypassing charging air
    • F02B37/164—Control of the pumps by bypassing charging air the bypassed air being used in an auxiliary apparatus, e.g. in an air turbine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10229—Fluid connections to the air intake system; their arrangement of pipes, valves or the like the intake system acting as a vacuum or overpressure source for auxiliary devices, e.g. brake systems; Vacuum chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/40—Application in turbochargers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/60—Fluid transfer
    • F05D2260/601—Fluid transfer using an ejector or a jet pump
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • Charger device for an internal combustion engine corresponding internal combustion engine and method for operating a
  • the invention relates to a supercharger device for an internal combustion engine, with a compressor which conveys fluid from a suction side in the direction of a pressure side and thereby compresses from a first pressure present on the suction side to a second pressure present on the pressure side.
  • the invention further relates to an internal combustion engine with a supercharger device and to a method for operating an internal combustion engine.
  • the internal combustion engine is used, for example, to drive a motor vehicle, in this respect, therefore, to provide a torque directed at the driving of the motor vehicle.
  • the charger device is for example part of the internal combustion engine or at least one drive device, which is assigned to the internal combustion engine.
  • the loading device serves to provide compressed air, in particular compressed fresh air, for the internal combustion engine.
  • the compressor which conveys fluid from the suction side in the direction of the pressure side. This means that the fluid, for example the air, has the first pressure on the suction side and the second pressure on the pressure side, the second pressure being higher than the first pressure during normal operation of the charger device.
  • the suction side of the compressor or the charging device is connected, for example, to an external environment of the charging device or the internal combustion engine, in particular via an air filter.
  • the pressure side is connected to the internal combustion engine, in particular to intake valves of the internal combustion engine.
  • the flow connection between the pressure side and the intake valves is, for example, way via a suction line or a suction pipe of the internal combustion engine.
  • the internal combustion engine can be supplied with fluid or air having a pressure which is higher than the pressure in the outside environment with the aid of the supercharger. In this way, the performance and / or the efficiency of the internal combustion engine can be increased. From the prior art, for example, the document DE 10 2012 015 290 A1 is known.
  • This relates to an internal combustion engine having a vacuum generating system for a motor vehicle, comprising a nozzle for generating a vacuum according to the Bemoulli bin, wherein the nozzle has two coaxial with a flow axis flow sections and at a narrowest cross section between the flow sections orthogonal emptying into the nozzle line section wherein the conduit portion is fluidly connected to a vacuum chamber, and wherein a first flow portion is fluidly connected to a first port portion that opens upstream of a compressor into an intake tract in the intake air flow direction, and a second flow portion fluidly connects to a second port portion is that opens between in the intake air flow direction downstream of a throttle valve and an internal combustion engine in the intake tract.
  • a charger device having the features of claim 1. It is provided that between the pressure side and the suction side, a bypass line is provided in a housing of the loading device, in which there is a suction jet pump with a vacuum connection. By way of the bypass line, a flow connection between the pressure side and the suction side of the loading device or of the compressor can be produced or produced. In the flow connection or in the bypass line, the suction jet pump is provided. This works preferably after the
  • Bernoulli principle thus has a cross-sectional constriction, in the region of a comparatively low pressure, thus a negative pressure, is applied.
  • the negative pressure generated by the suction jet pump is provided via the vacuum connection.
  • At least one vacuum consumer for example a brake booster, can be connected to the vacuum connection.
  • the negative pressure consumer is connected to both the suction pipe and the vacuum port, wherein in the flow connection between the vacuum consumer and the suction pipe on the one hand and in the flow connection between the vacuum and the negative pressure connection to the other in each case a check valve is arranged , With such an embodiment, the negative pressure consumer is always provided with the higher negative pressure which is present either in the intake manifold or at the vacuum port.
  • the bypass line is arranged at least partially in the housing of the charger. This is particularly preferred for the suction jet pump.
  • both the bypass line and the suction jet pump are completely housed in the housing of the charger, so far so far in spite of the suction jet pump an extremely compact charger device with low space requirement is realized.
  • the supercharger device is present as an exhaust gas turbocharger or as an electrically driven supercharger. If the supercharger device is designed as an exhaust-gas turbocharger, it has, in addition to the compressor, a turbine or exhaust-gas turbine, through which the exhaust gas flows or flows over it during operation of the internal combustion engine. With the help of the turbine enthalpy or flow energy of the exhaust gas contained in the exhaust gas is converted into kinetic energy, which is subsequently used to operate the compressor.
  • the charger device can also be realized as an electrically driven supercharger.
  • the compressor by means of an electric machine, in particular an electric motor, driven.
  • the charger device is present as an electrically assisted exhaust gas turbocharger.
  • the electric machine or the electric motor is provided, which acts on the shaft, via which the operative connection between the turbine and the compressor is made.
  • it may be provided that to drive the compressor not only by means of the turbine, but also with the help of the electric machine.
  • a preferred embodiment of the invention provides that the bypass line and the suction jet pump are integrated in a compressor housing of the compressor. It has already been indicated above that the bypass line and / or the suction jet pump are provided in the housing of the loading device. It now becomes clear that both the bypass line and the suction jet pump should be present in the compressor housing of the compressor, so that with the aid of the bypass line an immediate flow connection between the pressure side and the suction side of the compressor can be realized. It is particularly preferred, of course, if the bypass line and the suction jet pump are completely integrated in the compressor housing or arranged in this.
  • the suction jet pump has a Venturi nozzle, in the narrowest cross section of which a vacuum line connected to the vacuum connection opens.
  • the suction jet pump has a cross-sectional constriction.
  • the Saugstahlpumpe is designed such that the flow cross section initially reduced until the narrowest cross section is reached. Subsequently, the flow cross-section is expanded again.
  • the vacuum line opens into the Venturi nozzle, in particular perpendicular to a main flow direction through the Venturi nozzle, in particular a propellant.
  • the blowing agent used here is the fluid present on the pressure side of the compressor.
  • the vacuum line which preferably at least partially, in particular completely, is integrated into the housing of the charger device or the compressor housing, the negative pressure is provided at the negative pressure.
  • a flow connection between the narrowest cross-section of the venturi and the vacuum port is realized so far.
  • bypass line is switchable.
  • at least one switching valve is arranged in the bypass line for this purpose. With the help of the switching valve, the flow connection between the pressure side and the suction side is either made or interrupted.
  • the fluid present on the pressure side can not reach the suction side, on which the lower first pressure exists, despite the higher second pressure.
  • the fluid can flow starting from the pressure side in the direction of the suction side. In that regard, at least part of the air compressed by the compressor is relieved to a lower pressure level. If the flow connection is interrupted by the bypass line, the suction jet pump is deactivated. When the flow connection is established, the negative pressure can be generated and provided by means of the suction jet pump.
  • a further embodiment of the invention provides that the compressor is designed as a radial compressor or as an axial compressor.
  • the design of the compressor can be chosen as desired. In the automotive sector, however, the design of the compressor as a radial compressor is particularly preferred because it has a smaller footprint.
  • a particularly preferred embodiment of the invention provides that the vacuum connection is provided on the compressor housing.
  • the vacuum connection can be designed, for example, as a vacuum connector or as a vacuum screw connector. It is arranged on the compressor housing so that the vacuum consumer can be connected directly to the compressor housing or the vacuum connection provided there.
  • the invention further relates to an internal combustion engine with a loading device, in particular a supercharger device according to the preceding embodiments, wherein the supercharger device comprises a compressor which promotes fluid from a suction side toward a pressure side and thereby from a present on the suction side of the first pressure on a the pressure side present second pressure compressed. It is provided that between see the pressure side and the suction side, a preferably switchable bypass line is provided in a housing of the charger, in which there is an ejector with a vacuum connection.
  • the invention relates to a method for operating an internal combustion engine, in particular an internal combustion engine according to the preceding embodiments, wherein the internal combustion engine has a supercharger with a compressor, which promotes fluid from a suction side in the direction of a pressure side and thereby from a present on the suction side of the first pressure a second pressure present on the pressure side seals.
  • a preferably switchable, bypass line is provided in a housing of the charger, in which there is a suction jet pump with a vacuum connection.
  • the vacuum provided by the suction jet pump is used for rinsing a filter device.
  • the vacuum has already been discussed on the use of the vacuum for operating a brake booster.
  • the negative pressure can be used to rinse the filter device, this being present, for example, as an activated carbon filter.
  • the filter device is used, for example, to vent a fuel tank, in which fuel is temporarily stored for the internal combustion engine.
  • the filter device When the fuel tank is vented, overpressure present therein is reduced in the direction of an external environment of the internal combustion engine or of the motor vehicle. It is mainly gaseous fuel, but also liquid fuel, taken in the direction of the outside environment. However, because the fuel is not allowed to enter the outside environment, the filter device is provided in the flow connection between the fuel tank and the outside environment. The filter device receives the fuel for temporary storage.
  • the rinsing is done at certain intervals.
  • fluid is used, which subsequently passes anyway in the internal combustion engine and burned there. Accordingly, the fuel temporarily stored in the filter device is also discharged in the direction of the internal combustion engine. For this reason, the negative pressure provided by the Saugstahlpumpe is ideal for flushing the filter device.
  • the supercharger device is present as an exhaust gas turbocharger, and that the internal combustion engine is operated such that adjusts a predetermined negative pressure at the vacuum port due to the exhaust gas generated by the internal combustion engine.
  • the supercharger as exhaust gas turbocharger has already been discussed above. Because the compressor is operated with the energy provided by the exhaust gas turbine, the second pressure and thus also the negative pressure provided at the vacuum port depends directly on the operating point of the internal combustion engine or the amount of exhaust gas generated by the internal combustion engine.
  • a negative pressure is predetermined and then the internal combustion engine is at least temporarily controlled such that adjusts itself to the vacuum port, this negative pressure. This is the case, for example, if the above-described filter device is to be rinsed, for which purpose a certain negative pressure is required. If the negative pressure currently provided at the vacuum connection is insufficient, the internal combustion engine is operated in such a way that the pressure difference between the pressure side and the suction side of the compressor increases, so that the pressure difference across the suction jet pump is increased, which leads to a greater negative pressure.
  • Figure 2 is a schematic representation of a suction jet pump, which is arranged in a housing of the charger.
  • FIG. 1 shows a region of an internal combustion engine 1, namely a supercharger device 2 for the internal combustion engine 1.
  • a part of a housing 3 of the charging device 2 can be seen, this part being present as a compressor housing 4 of a compressor 5.
  • the compressor 5 is preferably designed as a radial compressor, so that he has a respect to a
  • Rotary axis 6 of a compressor of the compressor 5, not shown here further inward air inlet 7 a fluid, in particular air, sucks and compressed in the direction of a radially outer air outlet 8.
  • the air inlet 7 constitutes a suction side of the compressor 5 and the air outlet 8 a pressure side.
  • bypass line 9 which is arranged or formed in the housing 3, in particular the compressor housing 4, the charger device 2.
  • the bypass line 9 is therefore preferably completely integrated in the housing 3 or the compressor housing 4.
  • a suction jet pump 10 to which a vacuum line 1 1, a vacuum port 12 is connected.
  • About the vacuum line 1 1 and the vacuum port 12 can from the Suction jet pump 10 generated negative pressure can be provided, in particular a vacuum consumer.
  • the bypass line 9 may be switchable.
  • the bypass line 9 is preferably switchable, for which purpose, for example, a switching valve 13 is provided.
  • the switching valve 13 may also be arranged in the vacuum line 11, but at least it is in the flow connection between the air outlet 8 and the air inlet 7.
  • the switching valve 13 may be designed as a discrete switching switching valve and thus have only two switching states, namely fully open and fully closed.
  • the switching valve is designed as a continuously activatable switching valve 13. Accordingly, with the aid of the switching valve 13, any flow cross-section of the bypass line 9 can be adjusted.
  • FIG. 2 shows a schematic representation of the suction jet pump 10, which is arranged in the bypass line 9.
  • the arrows 14 indicate a direction of flow through the bypass line 9 or the suction jet pump 10, which is aligned from the air outlet 8 to the air inlet 7 of the compressor 5.
  • the suction jet pump 10 has a cross-sectional constriction 15, wherein this is configured such that the flow cross-section of the bypass line 9 is reduced continuously until a narrowest cross section of the suction jet pump 10 is reached. Subsequently, the flow cross-section increases again.
  • the vacuum line 11 opens into the suction jet pump 10. as the negative pressure line 9 a. Due to the cross-sectional constriction 15, the flow rate of the fluid flowing through the bypass line 9 increases. Accordingly, the static pressure decreases with decreasing flow cross-section until it reaches its lowest value in the narrowest cross-section. By the opening there vacuum line 1 can be provided so far vacuum.
  • the self-adjusting flow direction is indicated by the arrow 16.
  • both the bypass line 9 and the suction jet pump 10 are preferably arranged integrated in the compressor housing 4.
  • the vacuum line 11 may at least partially be present in the compressor housing 4, but preferably completely. This means that the vacuum port 12 is formed on the compressor housing 4. In this way, an extremely compact charger 2 can be realized for the internal combustion engine 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)

Abstract

L'invention concerne un dispositif de suralimentation (2) pour un moteur à combustion interne (1), comprenant un compresseur (5) qui déplace un fluide d'un côté aspiration vers un côté refoulement, et le comprime d'une première pression côté aspiration à une seconde pression côté refoulement. Selon l'invention, une conduite de dérivation (9) dans laquelle se trouve une pompe à jet aspirant (10) dotée d'une prise de dépression, est présente dans le carter (3) du système de suralimentation, entre le côté refoulement et le côté aspiration. L'invention concerne en outre un moteur à combustion interne (1) doté d'un système de suralimentation (2), ainsi qu'un procédé pour faire fonctionner un moteur à combustion interne (1).
PCT/EP2015/001822 2014-11-14 2015-09-10 Système de suralimentation pour un moteur à combustion interne, moteur à combustion interne correspondant et procédé pour faire fonctionner un moteur à combustion interne WO2016074752A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102014016865 2014-11-14
DE102014016865.4 2014-11-14
DE102015006188.7A DE102015006188A1 (de) 2014-11-14 2015-05-15 Ladereinrichtung für eine Brennkraftmaschine, entsprechende Brennkraftmaschine sowie Verfahren zum Betreiben einer Brennkraftmaschine
DE102015006188.7 2015-05-15

Publications (1)

Publication Number Publication Date
WO2016074752A1 true WO2016074752A1 (fr) 2016-05-19

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PCT/EP2015/001822 WO2016074752A1 (fr) 2014-11-14 2015-09-10 Système de suralimentation pour un moteur à combustion interne, moteur à combustion interne correspondant et procédé pour faire fonctionner un moteur à combustion interne

Country Status (2)

Country Link
DE (1) DE102015006188A1 (fr)
WO (1) WO2016074752A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016116551A1 (de) 2016-09-05 2018-03-08 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Flansch für einen Abgasturbolader, Abgasturbolader und Kraftfahrzeug
DE102018109010A1 (de) 2018-04-17 2019-10-17 Man Energy Solutions Se Vorrichtung zum Aufladen eines Verbrennungsmotors
CN111819346A (zh) * 2018-02-26 2020-10-23 奥迪股份公司 用于内燃机的压缩机装置以及用于运行压缩机装置的方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2077354A (en) * 1980-05-28 1981-12-16 Nissan Motor Exhaust turbine driven supercharger with compressor bypass arrangement
DE102004028271A1 (de) * 2004-06-09 2005-12-29 Fev Motorentechnik Gmbh Abgasturbolader für eine Brennkraftmaschine
US20080267765A1 (en) * 2003-12-24 2008-10-30 Hua Chen Centrifugal Compressor with a Re-Circulation Venturi in Ported Shroud
DE102007024584A1 (de) * 2007-05-25 2008-12-04 Audi Ag Vorrichtung zur Aufladung von Brennkraftmaschinen
DE102012015325A1 (de) * 2012-08-01 2014-02-06 GM Global Technology Operations, LLC (n.d. Ges. d. Staates Delaware) Venturidüse zur Erzeugung eines Unterdrucks

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011084539B3 (de) * 2011-10-14 2012-12-06 Continental Automotive Gmbh Turbolader mit einer Venturidüse zur Entlüftung eines Aktivkohlefilters
DE102012209562B4 (de) * 2012-06-06 2017-08-31 Continental Automotive Gmbh Turbinengehäuse für einen Abgasturbolader
DE102012015290A1 (de) 2012-08-01 2014-02-06 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Verbrennungsmotor mit einem Vakuumerzeugungssystem für ein Kraftfahrzeug
DE202013006731U1 (de) * 2013-07-25 2013-08-09 Borgwarner Inc. Abgasturbolader

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2077354A (en) * 1980-05-28 1981-12-16 Nissan Motor Exhaust turbine driven supercharger with compressor bypass arrangement
US20080267765A1 (en) * 2003-12-24 2008-10-30 Hua Chen Centrifugal Compressor with a Re-Circulation Venturi in Ported Shroud
DE102004028271A1 (de) * 2004-06-09 2005-12-29 Fev Motorentechnik Gmbh Abgasturbolader für eine Brennkraftmaschine
DE102007024584A1 (de) * 2007-05-25 2008-12-04 Audi Ag Vorrichtung zur Aufladung von Brennkraftmaschinen
DE102012015325A1 (de) * 2012-08-01 2014-02-06 GM Global Technology Operations, LLC (n.d. Ges. d. Staates Delaware) Venturidüse zur Erzeugung eines Unterdrucks

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016116551A1 (de) 2016-09-05 2018-03-08 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Flansch für einen Abgasturbolader, Abgasturbolader und Kraftfahrzeug
DE102016116551B4 (de) 2016-09-05 2024-01-11 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Flansch für einen Abgasturbolader, Abgasturbolader und Kraftfahrzeug
CN111819346A (zh) * 2018-02-26 2020-10-23 奥迪股份公司 用于内燃机的压缩机装置以及用于运行压缩机装置的方法
DE102018109010A1 (de) 2018-04-17 2019-10-17 Man Energy Solutions Se Vorrichtung zum Aufladen eines Verbrennungsmotors
CN110388258A (zh) * 2018-04-17 2019-10-29 曼恩能源方案有限公司 用于对内燃机增压的装置

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