EP2501913A1 - Groupe de suralimentation à plusieurs étages, système de suralimentation et moteur à combustion interne comportant chacun ledit groupe - Google Patents

Groupe de suralimentation à plusieurs étages, système de suralimentation et moteur à combustion interne comportant chacun ledit groupe

Info

Publication number
EP2501913A1
EP2501913A1 EP10784977A EP10784977A EP2501913A1 EP 2501913 A1 EP2501913 A1 EP 2501913A1 EP 10784977 A EP10784977 A EP 10784977A EP 10784977 A EP10784977 A EP 10784977A EP 2501913 A1 EP2501913 A1 EP 2501913A1
Authority
EP
European Patent Office
Prior art keywords
turbine
working fluid
bypass
housing
turbocharger
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.)
Withdrawn
Application number
EP10784977A
Other languages
German (de)
English (en)
Inventor
Andreas Thoss
Ronald Hegner
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.)
Rolls Royce Solutions GmbH
Original Assignee
MTU Friedrichshafen GmbH
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 MTU Friedrichshafen GmbH filed Critical MTU Friedrichshafen GmbH
Publication of EP2501913A1 publication Critical patent/EP2501913A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F02B37/013—Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust-driven pumps arranged in series
    • 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
    • F02B37/004—Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust drives arranged in series
    • 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
    • F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
    • 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

  • Multi-stage supercharger group supercharging system and internal combustion engine, each with the multi-stage supercharger group
  • the invention relates to a multistage charging group (10) for acting on a working fluid (A) of an internal combustion engine, comprising at least:
  • the invention also relates to a charging system and an internal combustion engine.
  • a multi-stage charge proves to be the preferred way to optimize the performance of an internal combustion engine in engines, especially the high and medium power class. It has also proven the use of multiple, parallel or multi-stage, turbocharger acted upon.
  • the applicant discloses an internal combustion engine with two or more exhaust gas turbochargers which can be acted upon in parallel, which are arranged substantially in a common carrier housing, with associated compressors being located outside the carrier housing.
  • the concept of a two-stage charging is realized, for example, in an internal combustion engine of EP17 10 415 A1.
  • a bypass guide for the working fluid of the internal combustion engine bypassing the first turbine.
  • the first turbine is a high-pressure turbine and the second turbine is a low-pressure turbine.
  • a low-pressure exhaust gas is provided with a double exhaust, wherein the one exhaust gas inlet is supplied from the exhaust gas outlet of the turbine of the high-pressure turbocharger, while the other exhaust gas inlet via a throttle element exhaust gas from the inlet to the exhaust gas inlet Turbine of the high pressure turbocharger is supplied.
  • Such a local and separate inflow to the low-pressure turbine, ie locally downstream of the high-pressure turbine has the consequence that the low-pressure turbine is only partially loaded, which has an adverse effect on the turbine efficiency.
  • a throttle element in the form of a bypass valve is described in DE10027668A1.
  • the two-stage supercharging has been preserved in large engines of the applicant.
  • DE 10 2007 046 667 A1 of the applicant a two-stage Aufladeoli is described, which largely solves the problems associated with the Operabeaufschlagung by a calming section between the fluid outlet of the high-pressure turbine and the fluid inlet of the low-pressure turbine is designed to save space.
  • a Zumischzu entry be designed fluidically advantageous.
  • the invention begins, whose task is to provide a multi-stage Aufladexx, a supercharging system and an internal combustion engine, which also have a comparatively good efficiency using a bypass guide.
  • the disadvantages of a partial admission of the secondary turbine when bypassing the first turbine of the Aufladeeria should be avoided.
  • the secondary turbine is to be acted upon in an improved manner flow-optimized for the case of using the bypass guide, bypassing the first turbine.
  • the object with regard to the multistage charging group is achieved by a charging group of the type mentioned above, in which according to the invention it is provided that the Bypass guide is at least partially formed with the carrier housing and within the carrier housing.
  • the invention is based on the consideration that when the first turbine and the second turbine are mounted on a common carrier housing, in particular arrangement in a common carrier housing, a good possibility is given to avoid only a partial local application of the secondary turbine.
  • the invention makes use of considerations to accommodate a feed line to the secondary turbine not only space-saving, but also, as far as possible, to avoid a space-consuming feed line.
  • the invention has recognized that in a common carrier housing of the first turbine and second turbine, a particularly advantageous flow guidance is also possible for a bypass amount of the working fluid. Based on this consideration, the invention provides that the bypass guide is at least partially formed with the carrier housing. In other words, a bypass amount of the working fluid can thereby be guided at least partially along the carrier housing, in particular along a wall of the carrier housing.
  • the concept of the invention uses in a surprising manner, the carrier housing not only in the context of its usual function for holding, in particular recording, the first turbine and secondary turbine.
  • the carrier housing is used as such for bypass guidance to prevent a bypass amount of working fluid in the bypass guide within the carrier housing, i. to lead in a space surrounded by the carrier housing interior.
  • the case of receiving the first turbine and the second turbine in the carrier housing means that essential parts, at least one turbine wheel, are arranged in the interior region of the carrier housing.
  • the total amount of working fluid is passed through and on the arrangement of the first turbine; namely, the majority of the working fluid via the first turbine and the bypass amount of the working fluid, bypassing the first turbine in the bypass guide along and within the carrier housing.
  • the main amount and the bypass amount of the working fluid are practically guided side by side, preferably separated by a wall of the turbine housing of the first turbine.
  • the total amount of working fluid to the second turbine can then lead space-saving and evenly with comparatively low flow resistance.
  • the secondary turbine can be acted upon largely uniformly.
  • a conversion of the bypass guide is at least partially formed with a wall of the Sugehauses.
  • the wall of the bypass guide is additionally formed at least partially with a wall of the turbine housing of the first turbine.
  • another wall in the interior surrounded by the carrier housing is also suitable for this purpose.
  • the wall of the carrier housing and the wall of the turbine housing and / or another wall in the interior form opposite wall parts of the bypass guide.
  • the concept of the invention has proven to be particularly advantageous for a supercharger group in which the first turbocharger is part of a high-pressure stage.
  • the second turbocharger is part of a low-pressure stage.
  • further pressure stages of the charging group can be present.
  • the first turbocharger preferably has a high-pressure compressor and the second turbocharger has a low-pressure compressor, wherein the high-pressure compressor and the low-pressure compressor are arranged outside the carrier housing. This has proven to be particularly useful in terms of flow guidance.
  • the carrier housing can be designed with two, three or more walls.
  • the carrier housing is advantageously gas-tight, for guiding a bypass amount designed the working fluid.
  • at least one wall of the carrier housing is gas-tight.
  • a bypass guide can be designed within the carrier housing with a cross-section widening in the downstream direction along the bypass guide. This contributes to the homogenization of the flow and allows a further improved uniform loading of the secondary turbine at the output end of the bypass guide.
  • An expansion of the cross-section may e.g. be achieved by a changing distance from wall parts of the bypass guide.
  • a working fluid guide takes place between the first turbine and the second turbine through an inflow housing.
  • the inflow housing is arranged with its flow-guiding part advantageously within the carrier housing.
  • the inflow housing initially surrounds at least one outflow cross section of the first turbine.
  • the inlet housing at the beginning, for receiving working fluid from the bypass guide has a circular ring cross-section which has a larger diameter than the Ausströmquerrough the first turbine.
  • the circular ring cross section surrounds the outflow cross section directly, ie, advantageously only separated by the turbine housing of the first turbine.
  • a bypass amount of the working fluid can be supplied to the inflow housing with comparatively low flow resistance, together with a major portion of the flow fluid-practically next to one another.
  • the inflow housing initially surrounds an inflow cross section of the secondary turbine.
  • an output-side flow cross section of the inflow housing advantageously corresponds to the inflow cross section of the secondary turbine; the cross sections are advantageous ring cross sections.
  • a turbine feed on the one hand to the first turbine and a bypass supply on the other hand are provided for bypass guide. These can be advantageously located in the immediate inflow region to the first turbine, e.g. lead into a feed, almost parallel, with comparatively low flow resistance.
  • the bypass supply may have a control element for controlling the bypass amount of the working fluid.
  • the control element is advantageously formed in the form of a throttle valve.
  • the invention also leads to a supercharging system with a supercharging group of the aforementioned type.
  • a supercharging system further comprises, in particular, an exhaust gas recirculation system and / or a charge air supply system, which can be charged with working fluid of an internal combustion engine.
  • the charging system has in particular an exhaust gas recirculation, a charge air intake and at least one heat exchanger.
  • the concept of the invention also leads to an internal combustion engine having a multistage charging group of the aforementioned type.
  • FIG. 1A is a partial sectional view of a preferred embodiment of a two-stage supercharger group having a high-pressure stage and a low-pressure stage.
  • FIG. 1B a sectional view along section B-B of FIG. 1A of a feed to the supercharger group.
  • the Aufladeoli of Fig. 1A is designed as an arrangement of two exhaust gas turbochargers in a high-pressure stage H and a low pressure stage N, wherein a first turbine 1 (hereinafter high-pressure turbine 1) of the high-pressure stage H as a radial turbine and a second turbine 2 (hereinafter low-pressure turbine 2) of the low pressure stage N as an axial turbine is shown for an exhaust gas of an internal combustion engine, not shown.
  • the high-pressure turbine 1 has a turbine housing 16 and the low-pressure turbine 2 has a turbine housing 17.
  • the 1 has a high-pressure compressor 11 with a corresponding unspecified compressor wheel and housing and a low-pressure compressor 12 with a corresponding unspecified compressor wheel in a compressor housing.
  • the compressor 11 is part of the high pressure assembly H.
  • the compressor 12 is part of the low pressure assembly N.
  • a working fluid A in the form of exhaust gas is fed to the feed nozzle 13 of the high-pressure turbine 1. leads.
  • the flow pattern of the working fluid in the charging group 10 is indicated by the dark arrow.
  • the dark arrow also indicates the flow routing of the bulk of the working fluid in the event that the bypass guide is utilized.
  • the working fluid or the main quantity of the working fluid leaves the high-pressure turbine 1 through a downstream outlet opening 3 arranged on a common axis of the high-pressure turbines 1 and 2 and is further fed - in an inflow housing 4 - to an annular inflow cross-section 5 of the low-pressure turbine 2.
  • the inlet housing 4 initially surrounds the outflow cross section 3 of the high-pressure turbine 1 and has a diameter corresponding to the inflow cross section 5 of the low-pressure turbine 2.
  • the high-pressure turbine 1 and the low-pressure turbine 2 are arranged in a common carrier housing 6, which also forms a bypass guide 7.
  • the bypass amount of the guided in the bypass guide 7 working fluid A is characterized in this case by the bright arrow.
  • the inflow housing 4 has a flow-input-side annular cross-section 8 surrounding the outflow cross-section 3 of the high-pressure turbine, which also partially overlaps the outflow cross section 3 of the high-pressure turbine 1.
  • the support housing 6 is formed to form a wall with two walls, namely an outer wall 6.1, and an inner wall 6.2.
  • the carrier housing 6 is gas-tight.
  • the downstream cross-section of the gas-tight chamber formed for the bypass guide 7 between the wall 6.2 and the turbine housing 16 of the first turbine 1 is practically divided by the Zuströmgephase 4.
  • the inner turbine housing 16, which can be seen as part of the housing of the high-pressure turbine 1 is initially arranged along an oblique section running from the inside to the outside.
  • a wall of the inflow housing 4 is further arranged on the outside first to form the aforementioned circular ring cross-section 8.
  • the inner wall 6.2 of the carrier housing 6 follows and then the outer wall 6.1 of the carrier housing 6.
  • the supply of a working fluid or a major amount of the working fluid (dark arrow in Fig.
  • control element 9 in the present case in the form of a throttle valve, but in principle also as Bypass valve, controlled.
  • the control element 9 is located in a branch of an exhaust pipe L which splits Y-like in a feed connection 13 immediately before the inlet of the bypass guide 7.
  • the supply connection 13 has a turbine inlet 14 and a bypass inlet 15 for this purpose
  • Control element 9 results only in the flow path according to the dark arrow for the working fluid A).
  • the invention relates to a multi-stage Aufladexx 10 for acting on a working fluid of an internal combustion engine, comprising at least: a first turbocharger and a second turbocharger, wherein a first turbine 1 of the first turbocharger and a second turbine 2 of the second turbocharger are arranged in a common carrier housing 6; It is provided that the bypass guide 7 is at least partially formed with and within the support housing 6, in this case between the support housing 6 and the turbine housing 16 of the high-pressure turbine. 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 groupe de suralimentation (10) à plusieurs étages servant à alimenter un moteur à combustion interne en fluide de travail (A). Ce groupe de suralimentation à plusieurs étages comporte un premier turbocompresseur comprenant une première turbine (1) et un second turbocompresseur comprenant une seconde turbine (2), la première turbine (1) et la seconde turbine (2) étant maintenues ensemble par un carter de support (6) commun, et un guidage de dérivation (7) destiné au fluide de travail (A), qui contourne la première turbine (1). Selon l'invention, le guidage de dérivation (7) est formé au moins partiellement par le carter de support (6) et à l'intérieur de ce dernier.
EP10784977A 2009-11-20 2010-11-16 Groupe de suralimentation à plusieurs étages, système de suralimentation et moteur à combustion interne comportant chacun ledit groupe Withdrawn EP2501913A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009046940.0A DE102009046940B4 (de) 2009-11-20 2009-11-20 Mehrstufige Aufladegruppe, Aufladesystem und Brennkraftmaschine, jeweils mit der mehrstufigen Aufladegruppe
PCT/EP2010/006964 WO2011060914A1 (fr) 2009-11-20 2010-11-16 Groupe de suralimentation à plusieurs étages, système de suralimentation et moteur à combustion interne comportant chacun ledit groupe

Publications (1)

Publication Number Publication Date
EP2501913A1 true EP2501913A1 (fr) 2012-09-26

Family

ID=43768947

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10784977A Withdrawn EP2501913A1 (fr) 2009-11-20 2010-11-16 Groupe de suralimentation à plusieurs étages, système de suralimentation et moteur à combustion interne comportant chacun ledit groupe

Country Status (7)

Country Link
US (1) US20120312012A1 (fr)
EP (1) EP2501913A1 (fr)
KR (1) KR20120084330A (fr)
CN (1) CN102725495A (fr)
DE (1) DE102009046940B4 (fr)
RU (1) RU2012125617A (fr)
WO (1) WO2011060914A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1843019B1 (fr) 2006-04-05 2010-09-29 GM Global Technology Operations, Inc. Turbocompresseur à deux étages pour moteur
JP5222274B2 (ja) * 2009-02-18 2013-06-26 三菱重工業株式会社 軸流タービンを備えたターボ過給機
GB2492995B (en) * 2011-07-19 2014-12-17 Jaguar Land Rover Ltd Reducing the catalyst light-off time for an engine with a multi-stage turbocharger
DE102011115296A1 (de) * 2011-09-29 2013-04-04 Mtu Friedrichshafen Gmbh Zweistufige Aufladevorrichtung
CN106948926A (zh) * 2017-05-11 2017-07-14 大连依勒斯涡轮增压技术有限公司 一种紧凑型两级涡轮机
CN106939821A (zh) * 2017-05-11 2017-07-11 大连依勒斯涡轮增压技术有限公司 一种紧凑型双动力输出涡轮机
FR3084919B1 (fr) * 2018-08-07 2020-12-11 Cryostar Sas Turbomachine a etages multiples

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19524566C1 (de) 1995-07-06 1996-06-27 Mtu Friedrichshafen Gmbh Vorrichtung und Verfahren zur Befestigung von Abgasturboladern an einem Trägergehäuse
DE19811782A1 (de) * 1998-03-18 1999-09-30 Daimler Chrysler Ag Brennkraftmaschine mit zwei Abgasturboladern
DE19822874A1 (de) * 1998-05-22 1999-11-25 Man Nutzfahrzeuge Ag Aufladesystem für Brennkraftmaschinen
DE10027668A1 (de) 2000-06-03 2001-12-06 Bosch Gmbh Robert Vorrichtung zur Steuerung der Verdichterleistung eines an eine Brennkraftmaschine angeschlossenen Abgasturboladers
US6422014B1 (en) * 2001-09-06 2002-07-23 Caterpillar Inc. Turbocharger with controllable flow geometry for two stage turbine
DE10230934B4 (de) * 2002-07-09 2008-10-16 Bayerische Motoren Werke Aktiengesellschaft Schaltbarer, zweistufiger Abgas-Turbolader für eine Brennkraftmaschine
DE50303719D1 (de) 2002-07-26 2006-07-20 Mtu Friedrichshafen Gmbh Brennkraftmaschine mit abgasturboladern
DE102004058371A1 (de) * 2004-12-03 2006-06-14 Daimlerchrysler Ag Brennkraftmaschine mit Abgasaufladung
EP1710415A1 (fr) 2005-04-04 2006-10-11 ABB Turbo Systems AG Suralimentation multi-étagée
DE102005025885B4 (de) * 2005-06-06 2010-04-29 Audi Ag Aufladevorrichtung für eine Verbrennungskraftmaschine
FR2891011A1 (fr) * 2005-09-21 2007-03-23 Melchior Jean F Dispositif de suralimentation pour moteur a combustion interne, et vehicule automobile equipe d'un tel dispositif
JP5036724B2 (ja) * 2005-11-22 2012-09-26 ボルボ ラストバグナー アーベー 二段階ターボチャージシステムを備える内燃エンジン
EP1843019B1 (fr) * 2006-04-05 2010-09-29 GM Global Technology Operations, Inc. Turbocompresseur à deux étages pour moteur
DE102007017843A1 (de) * 2007-04-16 2008-11-06 Siemens Ag Turboladeranordnung
DE102007046667A1 (de) * 2007-09-27 2009-04-09 Behr Gmbh & Co. Kg Mehrstufige Aufladegruppe, Mehrstufige Aufladevorrichtung und Aufladesystem
US20100126169A1 (en) * 2008-11-21 2010-05-27 Ronald Hegner Internal combustion engine with two-stage register supercharging

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011060914A1 *

Also Published As

Publication number Publication date
US20120312012A1 (en) 2012-12-13
WO2011060914A1 (fr) 2011-05-26
RU2012125617A (ru) 2013-12-27
DE102009046940B4 (de) 2014-06-18
DE102009046940A1 (de) 2011-05-26
KR20120084330A (ko) 2012-07-27
CN102725495A (zh) 2012-10-10

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