EP2630353B1 - Turbolader-egr-modul - Google Patents

Turbolader-egr-modul Download PDF

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Publication number
EP2630353B1
EP2630353B1 EP11834877.0A EP11834877A EP2630353B1 EP 2630353 B1 EP2630353 B1 EP 2630353B1 EP 11834877 A EP11834877 A EP 11834877A EP 2630353 B1 EP2630353 B1 EP 2630353B1
Authority
EP
European Patent Office
Prior art keywords
valve
exhaust gas
product
gas recirculation
egr
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.)
Not-in-force
Application number
EP11834877.0A
Other languages
English (en)
French (fr)
Other versions
EP2630353A4 (de
EP2630353A2 (de
Inventor
Robert D. Keefover
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.)
BorgWarner Inc
Original Assignee
BorgWarner Inc
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 BorgWarner Inc filed Critical BorgWarner Inc
Publication of EP2630353A2 publication Critical patent/EP2630353A2/de
Publication of EP2630353A4 publication Critical patent/EP2630353A4/de
Application granted granted Critical
Publication of EP2630353B1 publication Critical patent/EP2630353B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/06—Low pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust downstream of the turbocharger turbine and reintroduced into the intake system upstream of the compressor
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • 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

Definitions

  • the technical field generally relates to products including turbochargers for internal combustion engines having an exhaust gas recirculation valve.
  • the invention concerns a product according to the preamble part of claim 1.
  • Such a product is known from WO 2006/122306 A2 .
  • US 2008/223038 A1 is an example for the integration of a low pressure loop EGR valve in a compressor housing.
  • US 2010/024414 A1 discloses the integration of a high pressure loop EGR valve in a turbine housing.
  • Oxides of Nitrogen are one of the exhaust gas emissions that must be controlled. Formation of NOx will occur at higher combustion temperatures.
  • a system referred to as the exhaust gas recirculation system, has been developed to reduce excess oxygen and combustion temperatures to control NOx emissions. A portion of the exhaust gas is recirculated back to the intake where it will be combined with incoming air reducing excess oxygen content in the total air mixture. When this mixture is compressed and ignited in the cylinder, the result is a reduction in NOx due to reduced oxygen content and a lower combustion temperature.
  • a schematic of this system is shown in Figure 1 .
  • the traditional system consists of the "high pressure" EGR loop, named because the EGR loop operates on the high pressure side between the engine and the turbocharger 7.
  • This EGR loop consists of an exhaust gas recirculation (EGR) valve 1 that controls the flow of exhaust gas to the intake manifold 2.
  • the EGR valve shown in Figure 1 is positioned after (cold side) the exhaust gas cooler 5, but it may also be positioned before (hot side) the cooler. As the EGR valve opens and closes it will increase or decrease the flow rate of exhaust gas to the intake manifold. It is also typical to have a throttle valve 6 to control airflow and pressure in the intake manifold and, an exhaust gas cooler 5 to reduce temperature of recirculated exhaust gas, and a cooler bypass valve 4 to bypass exhaust gas around the cooler under certain operating conditions.
  • EGR loop that operates on the low pressure side of the turbocharger, after the exhaust turbine and before intake compressor.
  • This system consists of another EGR valve 10 to control the flow rate of exhaust gas to the air intake, and an exhaust throttle valve 11 to control the exhaust back pressure needed to drive the exhaust gas flow.
  • This EGR loop may also includes a diesel oxidation catalyst (DOC) and diesel particulate filter (DPF) 9, and an additional exhaust gas cooler 12.
  • DOC diesel oxidation catalyst
  • DPF diesel particulate filter
  • Low pressure loop exhaust gas has the additional advantage of passing through the air charge cooler 8 before reaching the engine. Similar to the high pressure loop, the low pressure loop valve can be placed either before (hot side) or after (cold side) the exhaust gas cooler.
  • EGR valves may be actuated by hydraulic, pneumatic, or electric means. Pneumatically actuated valves depend upon the availability of pressure or vacuum on the vehicle and this may be an undesirable requirement. They also require a means of electrically controlling the pneumatic source to allow overall electrical control of the system. An electric vacuum or pressure regulator is used to provide this control. Operating force is another factor used in the selection criteria for the type of actuator used for the EGR valve. Higher flow rates require larger valves with greater area and higher operating forces. Lower pressure differential between the exhaust and intake manifold will require larger valves to achieve the desired flow rate. Contamination in the exhaust gas can accumulate on the valve components and cause them to stick or restrict movement if sufficient operating force is not available.
  • valve technology best suited to a particular application is at least partially driven by the required EGR flow rate.
  • Single poppet valves are well suited for typical engine applications because of low gas leakage passed the valve when the valve is closed. Because the operating forces required typically increase with the valve size, for higher EGR flow rates in moderately sized engines dual poppet valves (two poppet valves on the same shaft) are often chosen; a dual poppet valve increases the flow capacity of a poppet valve while balancing and reducing the required operating forces.
  • a throttle valve or butterfly valve
  • a throttle valve is also a potentially attractive solution for "low pressure loop" EGR systems due to lower differential valve pressure and subsequent less stringent requirements for gas leakage when the valve is closed.
  • a throttle valve is not typically able to achieve the low leakage rates of a poppet valve, this however is typically of less importance for very large engines.
  • a throttle valve is naturally balanced resulting in lower operating forces for very large valves.
  • a throttle valve can typically achieve a similar EGR flow rate in a smaller diameter valve because of their inherently higher flow efficiency.
  • EGR valves and other valves that control the flow of high temperature fluids, may have components that are sensitive to the high temperature. These components may include: actuators, shaft seals, bearings, position sensors, and plastic molded parts. Typical actuators may include: pneumatic devices, linear solenoids, torque motors, stepper motors, and D.C. motors. Additional measures such as liquid cooling, heat shields, remote mounting, or use of expensive materials may be required to achieve suitable durability when operating at the high temperature.
  • the invention includes a product including a turbocharger including a turbine torsionally connected to a compressor and a compressor housing fixed to a turbine housing.
  • An exhaust gas recirculation valve is mounted on at least one of the compressor housing and the turbine housing.
  • the invention includes integration of several of the EGR valves with the turbocharger.
  • the placement of the EGR valves within the engine system architecture is chosen such that that the exhaust gas inlet for the high pressure EGR valve 1 coincides with a junction to the inlet to the turbine of the turbo charger 7 and such that the outlet of the low pressure EGR valve 10 coincides with a junction to the inlet to the compressor of the turbo charger 7.
  • Configuring the system in this manner allows for the potential to integrate one or more of the EGR valves into the packaging of the turbocharger assembly.
  • a schematic of a system with a Turbo EGR module according to the invention is shown in Figure 2 .
  • the module concept can be extended further with the possibility to integrate the EGR cooler bypass valve 4, and/or a low pressure intake valve 13, and/or a gas mixer/diffuser 14 at the junction between the low pressure exhaust gas and the inlet to the compressor from a prior art system as illustrated in Figure 4 .
  • FIG. 3 Another embodiment is shown pictorially in Figure 3 , in which a throttle type low pressure loop EGR valve is integrated to the inlet of the turbo compressor and/or a poppet type high pressure EGR valve is integrated to the inlet of the turbo turbine.
  • Embodiment 1 includes a product comprising: a turbocharger comprising a turbine torsionally connected to a compressor, a housing for said turbine, a housing for said compressor fixed with respect to said turbine housing; wherein there is a low pressure exhaust gas recirculation valve mounted on said compressor housing. wherein there is a high pressure exhaust gas recirculation valve mounted on said turbine housing.
  • Embodiment 2 may include a product wherein said exhaust gas recirculation valve is a poppet type valve.
  • Embodiment 3 may include a product wherein said exhaust gas recirculation valve is water cooled
  • Embodiment 4 may include a product wherein said exhaust gas recirculation valve has a DC motor drive.
  • Embodiment 5 may include a product further comprising a cooler bypass valve mounted to said turbine housing.
  • Embodiment 6 may include a product wherein said exhaust gas recirculation valve has a DC motor drive.
  • Embodiment 7 may include a product wherein said exhaust gas recirculation valve is a throttle type valve.
  • Embodiment 8 may include a product further comprising an exhaust gas mixing unit mounted between said compressor housing and said exhaust gas recirculation valve.
  • Embodiment 12 may include a product further comprising an intake valve mounted to said compressor housing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Supercharger (AREA)

Claims (9)

  1. Produkt, das Folgendes umfasst:
    einen Turbolader (7), der eine drehfest mit einem Verdichter verbundene Turbine umfasst,
    ein Gehäuse für die Turbine, und
    ein Gehäuse für den Verdichter, das bezüglich des Turbinengehäuses fixiert ist;
    dadurch gekennzeichnet, dass
    ein Hochdruck-Abgasrückführventil (1) an der Turbine befestigt ist und mit einem Eingang zur Turbine zusammenfällt, und wobei ein Niedrigdruck-Abgasrückführventil (10) an dem Verdichtergehäuse befestigt ist und mit einem Eingang zum Verdichter zusammenfällt :
  2. Produkt nach Anspruch 1, wobei das Hochdruck-Abgasrückführventil (1) ein Tellerventil ist.
  3. Produkt nach Anspruch 1, wobei das Hochdruck-Abgasrückführventil (1) wassergekühlt ist.
  4. Produkt nach Anspruch 1, wobei das Hochdruck-Abgasrückführventil (1) einen Gleichstrommotorantrieb aufweist.
  5. Produkt nach Anspruch 1, das ferner ein an dem Turbinengehäuse befestigtes Kühler-Bypassventil (4) umfasst.
  6. Produkt nach Anspruch 1, wobei das Niedrigdruck-Abgasrückführventil (10) einen Gleichstrommotorantrieb aufweist.
  7. Produkt nach Anspruch 1, wobei das Niedrigdruck-Abgasrückführventil (10) ein Drosselventil ist.
  8. Produkt nach Anspruch 1, das ferner eine Abgasmischeinheit (14) umfasst, die zwischen dem Verdichtergehäuse und dem Niedrigdruck-Abgasrückführventil befestigt ist.
  9. Produkt nach Anspruch 1, das ferner ein Einlassventil (13) umfasst, das am Verdichtergehäuse befestigt ist.
EP11834877.0A 2010-10-18 2011-10-13 Turbolader-egr-modul Not-in-force EP2630353B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US39402310P 2010-10-18 2010-10-18
PCT/US2011/056055 WO2012054282A2 (en) 2010-10-18 2011-10-13 Turbocharger egr module

Publications (3)

Publication Number Publication Date
EP2630353A2 EP2630353A2 (de) 2013-08-28
EP2630353A4 EP2630353A4 (de) 2014-07-16
EP2630353B1 true EP2630353B1 (de) 2015-11-25

Family

ID=45975807

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11834877.0A Not-in-force EP2630353B1 (de) 2010-10-18 2011-10-13 Turbolader-egr-modul

Country Status (5)

Country Link
US (1) US20130195628A1 (de)
EP (1) EP2630353B1 (de)
KR (1) KR20130143052A (de)
CN (1) CN103154468A (de)
WO (1) WO2012054282A2 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9003792B2 (en) * 2012-04-05 2015-04-14 GM Global Technology Operations LLC Exhaust aftertreatment and exhaust gas recirculation systems
US9429110B2 (en) * 2013-01-16 2016-08-30 Ford Global Technologies, Llc Method and system for vacuum control
US9556771B2 (en) 2013-01-16 2017-01-31 Ford Global Technologies, Llc Method and system for catalyst temperature control
DE102014106517A1 (de) 2014-05-09 2015-11-12 Pierburg Gmbh Abgasturbolader mit einem Waste-Gate-Ventil
DE112015006684T5 (de) * 2015-08-25 2018-05-09 Borgwarner Inc. Mischvorrichtung und Verfahren zur Herstellung und Verwendung derselben
US11408362B2 (en) * 2018-08-28 2022-08-09 Borgwarner Inc. High efficiency turbocharger with EGR system
EP3708821A1 (de) * 2019-03-15 2020-09-16 Borgwarner Inc. Verdichter zum laden eines verbrennungsmotors

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6145313A (en) * 1997-03-03 2000-11-14 Allied Signal Inc. Turbocharger incorporating an integral pump for exhaust gas recirculation
SE519433C2 (sv) * 1997-07-07 2003-02-25 Scania Cv Ab Hus för turboöverladdare för förbränningsmotor samt turboöverladdare
US6032465A (en) * 1997-12-18 2000-03-07 Alliedsignal Inc. Integral turbine exhaust gas recirculation control valve
SE521713C2 (sv) * 1998-11-09 2003-12-02 Stt Emtec Ab Förfarande och anordning för ett EGR-system, samt dylik ventil
US6430929B2 (en) * 2000-03-03 2002-08-13 Honeywell International Inc. Turbocharger with integrated exhaust gas recirculation valve
US6763813B2 (en) * 2001-02-27 2004-07-20 Mitsubishi Denki Kabushiki Kaisha Current passing device of EGR valve apparatus
EP1880099B1 (de) * 2005-05-11 2009-06-24 Borgwarner, Inc. Motorluftverwaltungssystem
US7213613B2 (en) * 2005-06-14 2007-05-08 Delphi Technologies, Inc. High-flow dual poppet valve having equalized closing forces
EP1896708A1 (de) * 2005-06-27 2008-03-12 Alstom Technology Ltd Verfahren zur erhöhung der aerodynamischen stabilität einer arbeitsfluidströmung eines verdichters
JP4497043B2 (ja) * 2005-07-20 2010-07-07 株式会社デンソー 排気ガス再循環装置
DE102005048911A1 (de) * 2005-10-10 2007-04-12 Behr Gmbh & Co. Kg Anordnung zur Rückführung und Kühlung von Abgas einer Brennkraftmaschine
US20070144170A1 (en) * 2005-12-22 2007-06-28 Caterpillar Inc. Compressor having integral EGR valve and mixer
JP4320684B2 (ja) * 2007-06-08 2009-08-26 トヨタ自動車株式会社 内燃機関の排気還流装置
US8196403B2 (en) * 2008-07-31 2012-06-12 Caterpillar Inc. Turbocharger having balance valve, wastegate, and common actuator
US9062636B2 (en) * 2009-11-18 2015-06-23 Mitsubishi Electric Corporation Drop-in type of exhaust gas recirculation valve, and system for attaching same

Also Published As

Publication number Publication date
EP2630353A4 (de) 2014-07-16
WO2012054282A3 (en) 2012-06-21
WO2012054282A2 (en) 2012-04-26
CN103154468A (zh) 2013-06-12
US20130195628A1 (en) 2013-08-01
KR20130143052A (ko) 2013-12-30
EP2630353A2 (de) 2013-08-28

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