• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Exhaust gas recirculation blower (8) of an internal combustion engine (1), with a stator, and with a rotor, wherein such assemblies of the stator and the rotor, which serve to guide exhaust gas, consist of a acidic atmosphere corrosion-resistant and erosion-resistant material.
    公开号:CH714519A2
    申请号:CH01482/18
    申请日:2018-11-30
    公开日:2019-06-28
    发明作者:Bartholomä Klaus；Klima Jiri；Ondrej Tomek
    申请人:Man Energy Solutions Se；
    IPC主号:
    专利说明:

    Description: The invention relates to an exhaust gas recirculation blower and an internal combustion engine.
    Internal combustion engines with exhaust gas recirculation are familiar to those skilled in the art. In such internal combustion engines, it is known to remove exhaust gas, which leaves the internal combustion engine, an exhaust branch of the internal combustion engine and via a so-called exhaust gas recirculation blower exhaust gas recirculation, which is also referred to as EGR blower to lead towards a charge air tract of the internal combustion engine and then to mix the exhaust gas with the charge air to be supplied to the cylinders of the internal combustion engine.
    Exhaust gas recirculation blower or EGR blower are typically designed as turbocompressors that compress the exhaust gas to a defined pressure. An exhaust gas recirculation blower of an exhaust gas recirculation of an internal combustion engine comprises at least one compressor stage, wherein the or each compressor stage, namely a rotor thereof, can be driven via a shaft mounted in a housing of the exhaust gas recirculation fan. Typically, an electric motor takes over the driving of the shaft and via the shaft, the driving of the rotor of the or each compressor stage of the exhaust gas recirculation blower.
    Known from practice exhaust gas recirculation blower are subject to wear, which makes it necessary to subject the exhaust gas recirculation blower at defined intervals of a repair or even an exchange. This is a disadvantage. There is a need for an exhaust gas recirculation blower which is subject to less wear.
    Proceeding from this, the present invention seeks to provide a novel exhaust gas recirculation fan and an internal combustion engine with such exhaust gas recirculation fan.
    This object is achieved by an exhaust gas recirculation blower according to claim 1. According to the invention, such assemblies of the stator and of the rotor, which serve to guide exhaust gas, consist of a material that is corrosion-resistant and erosion-resistant under an acid-containing atmosphere, preferably metal material. Then, when the guide of the exhaust gas serving assemblies of stator and rotor made of such a material, the exhaust gas recirculation blower is subject to less wear. The invention is based on the finding that the exhaust gas of heavy fuel oil and gas-powered internal combustion engines, such as used on a ship large internal combustion engines, in the leadership of the exhaust gas recirculation fan for condensation and acid formation tends, in particular by a high sulfur content in the exhaust gas , Then, when the constituent assemblies of the stator and rotor of the exhaust gas recirculation blower are made of an acidic atmosphere corrosion-resistant and erosion-resistant material, the life of the exhaust gas recirculation blower can be increased because it is then less susceptible to wear.
    According to an advantageous development of such assemblies of the stator, which serve the guidance of exhaust gas, consist of an austenitic steel or of a duplex steel. Such assemblies of the rotor, which serve to guide exhaust gas, according to a first variant of an austenitic steel or of a duplex steel or a second variant of a titanium alloy. The use of austenitic steel or duplex steel for the components of the stator serving for the exhaust system is preferred. Such a steel can also be used for the assemblies of the rotor, which serve the exhaust gas guide, but preferably these assemblies of the rotor made of a titanium alloy.
    The internal combustion engine with an exhaust gas recirculation blower is defined in claim 8.
    Preferred embodiments of the invention will become apparent from the dependent claims and the description below. Embodiments of the invention will be described, without being limited thereto, with reference to the drawings. Showing:
    Fig. 1 is a block diagram of an internal combustion engine with exhaust gas recirculation and an exhaust gas recirculation blower.
    The invention relates to an exhaust gas recirculation blower exhaust gas recirculation of an internal combustion engine.
    Such exhaust gas recirculation fan is used to promote and the compression of exhaust gas, which is taken from an exhaust tract of an internal combustion engine and promoted by means of the exhaust gas recirculation blower in the direction of a charge air tract of the internal combustion engine. Furthermore, the invention relates to an internal combustion engine with exhaust gas recirculation.
    1 shows a block diagram of an internal combustion engine 1 with a plurality of cylinders 2. During operation of the internal combustion engine 1, exhaust gas is produced which leaves the cylinders 2 of the internal combustion engine 1 and is guided in the direction of a turbine 4 of an exhaust gas turbocharger 3 of the internal combustion engine 1. The exhaust gas leaving the cylinders 2 of the internal combustion engine 1, which is guided via the turbine 4 of the exhaust gas turbocharger 3, is expanded in the turbine 4, whereby energy used in this process is utilized to charge air in the compressor 5 of the exhaust gas turbocharger 3 to be supplied to the cylinder 2 of the internal combustion engine 1 to condense.
    1 has an exhaust gas recirculation 6. The exhaust gas recirculation 6 comprises an exhaust gas recirculation cooler 7 and an exhaust gas recirculation blower 8. The exhaust gas recirculation cooler 7 serves to cool exhaust gas, which upstream in Fig. 1 the turbine 4 is removed at high pressure to the turbine 4 to leading exhaust tract. The exhaust gas recirculation blower 8 serves to convey the exhaust gas guided via the exhaust gas recirculation cooler 7 in the direction of the charge air tract of the internal combustion engine in order to mix this exhaust gas of the exhaust gas recirculation with the compressed charge air downstream of the compressor 5.
    In the internal combustion engine 1 is in particular an internal combustion engine is burned in the heavy oil or gas, such as a marine engine. Sulfur can be contained in heavy oil and gas, which can condense on passing through the exhaust gas recirculation blower 8 to form acid.
    For the purposes of the present invention, it is proposed that such assemblies of a stator and a rotor of the exhaust gas recirculation blower 8, which serve to guide the exhaust gas, consist of a corrosion-resistant and erosion-resistant material under acidic atmosphere, in particular a corresponding metal material.
    In the assemblies of the stator, which serve to guide exhaust, it is in particular an intake manifold, a compressor housing and a diffuser, said assemblies all define an exhaust gas flow channel at least in sections.
    In the assemblies of the rotor, which serve the exhaust gas guide, it is in particular a compressor impeller and / or impeller blades and / or a shaft.
    The intake port of the stator defines an exhaust flow passage upstream of the compressor impeller, whereas the diffuser defines the exhaust flow passage downstream of the compressor impeller. The compressor housing defines an exhaust gas flow passage, in particular, between the intake port and the diffuser adjacent the impeller vanes of the compressor impeller.
    As already stated, are the leadership of exhaust gas serving assemblies of the stator and the rotor from a acidic atmosphere under corrosion-resistant and erosion-resistant material, preferably a corresponding metal material. The assemblies of the rotor, which serve to guide exhaust gas, preferably consist of an austenitic steel or of a duplex steel. Also, the assemblies of the rotor, which serve to guide exhaust, may consist of an austenitic steel or of a duplex steel, but preferably the assemblies of the rotor, which serve to guide exhaust gas, made of a titanium alloy.
    As already stated, the inventive exhaust gas recirculation fan 8 is preferably used on an internal combustion engine, which is operated with heavy oil or gas, such as a large internal combustion engine, in particular a marine engine.
    REFERENCE SIGNS LIST 1 internal combustion engine 2 cylinder 3 exhaust gas turbocharger 4 turbine 5 compressor 6 exhaust gas recirculation 7 exhaust gas recirculation cooler 8 exhaust gas recirculation blower
    权利要求:
    Claims (9)
    [1]
    claims
    1. Exhaust gas recirculation fan (8) of an internal combustion engine (1), with a stator, with a rotor, characterized in that assemblies of the stator and the rotor, which serve to guide exhaust gas, consist of a corrosion-resistant and erosion-resistant material under an acidic atmosphere ,
    [2]
    2. Exhaust gas recirculation blower according to claim 1, characterized in that such assemblies of the stator and the rotor, which serve to guide exhaust gas, consist of a corrosion-resistant under acidic atmosphere and erosion-resistant metal material.
    [3]
    3. Exhaust gas recirculation blower according to claim 1 or 2, characterized in that as assemblies of the stator, an intake manifold and / or a compressor housing and / or a diffuser consist of a corrosion-resistant under acidic atmosphere and erosion-resistant metal material.
    [4]
    4. Exhaust gas recirculation blower according to one of claims 1 to 3, characterized in that such assemblies of the stator, which serve the guidance of exhaust gas, consist of an austenitic steel or of a duplex steel.
    [5]
    5. Exhaust gas recirculation blower according to one of claims 1 to 4, characterized in that consist as assemblies of the rotor, a compressor impeller and / or impeller blades and / or a compressor shaft of a corrosion-resistant under acidic atmosphere and erosion-resistant metal material.
    [6]
    6. Exhaust gas recirculation blower according to one of claims 1 to 5, characterized in that such assemblies of the rotor, which serve the guidance of exhaust gas, consist of an austenitic steel or of a duplex steel.
    [7]
    7. Exhaust gas recirculation blower according to one of claims 1 to 5, characterized in that such assemblies of the rotor, which serve the guidance of exhaust gas, consist of a titanium alloy.
    [8]
    8. internal combustion engine (1), with a plurality of cylinders (2), with a turbine (4) and a compressor (5) having exhaust gas turbocharger (3), wherein in the turbine (4) the cylinder (2) leaving the exhaust gas and thereby relaxed obtained energy in the compressor (5) for compression of the cylinders (2) to be supplied charge air is available, with an exhaust gas recirculation cooler (7) and an exhaust gas recirculation fan (8) having exhaust gas recirculation (6), characterized in that the exhaust gas recirculation Blower (8) according to one of claims 1 to 7 is formed.
    [9]
    9. Internal combustion engine according to claim 8, characterized in that it is a heavy fuel oil or gas-powered large internal combustion engine.
    类似技术:
    公开号 | 公开日 | 专利标题
    DE4312078C2|1995-06-01|Exhaust gas turbocharger for a supercharged internal combustion engine
    DE2400963C2|1982-11-25|Device for preventing the suction of lubricant
    DE10212675A1|2003-10-02|Exhaust gas turbocharger in an internal combustion engine
    DE102016125189B4|2020-11-26|turbocharger
    DE102013209340B4|2021-01-28|INTEGRATED INLET MANIFOLD AND COMPRESSOR
    DE102015207791B4|2018-11-15|motor vehicle
    DE10028733A1|2001-12-13|Exhaust turbine for turbocharger ha guide blades with flow intake edges and/or outflow edges at angle relative to jacket line, and cover rings to connected blade ends
    DE102008061399A1|2010-06-17|Internal combustion engine with two exhaust gas turbochargers connected in series
    CH714519A2|2019-06-28|Exhaust gas recirculation blower and internal combustion engine.
    DE102009041223B4|2014-01-02|Method for designing a drive system
    EP2058485B1|2010-07-07|Charged combustion engine and method for operating such a combustion engine
    DE102015208538B3|2016-10-06|motor vehicle
    DE2209909C2|1982-07-22|Exhaust turbocharger lubricant loss preventing device - has lubricant chamber connected to fan suction side by vent pipe
    DE102015006288A1|2015-12-03|Turbine for an exhaust gas turbocharger, in particular an internal combustion engine, and drive device for a motor vehicle
    WO2010072227A1|2010-07-01|Exhaust gas recirculation system and method for exhaust gas recirculation
    DE102017200363A1|2017-08-10|Method for operating a parallel-charged internal combustion engine with switchable turbine and internal combustion engine for carrying out such a method
    DE102009022711A1|2011-02-03|Ship propulsion system and ship equipped therewith
    DE102007043585A1|2009-03-26|Turbocharger arrangement for internal-combustion engine, has turbochargers with turbine housings arranged in turbines, where pressure side of one turbocharger is connected gas-prominently with annular gap of other turbocharger
    DE10329441A1|2005-01-27|Pressure charged internal combustion engine for motor vehicle has charge air line guided through engine support, and connection between charge air line and manifold is designed as sealing point
    EP1619366A1|2006-01-25|Switching a multi-stage turbocompressor
    DE102009012732A1|2010-09-16|Turbocharger for internal combustion engine, has compressor housing for receiving compressor wheel, and cycle valve for boost-pressure control
    DE102018010043A1|2020-06-25|Exhaust tract for an internal combustion engine
    DE102016123845A1|2018-06-14|System with internal combustion engine, compressor and exhaust gas turbine
    DE102019101141A1|2020-07-23|Ventilation device for a crankcase
    DE102019202342A1|2020-08-27|Internal combustion engine and motor vehicle having a crankcase ventilation and an oil mist separator
    同族专利:
    公开号 | 公开日
    CN109944722A|2019-06-28|
    CH714519B1|2021-11-30|
    US20190186388A1|2019-06-20|
    KR20190074982A|2019-06-28|
    JP2019113067A|2019-07-11|
    DE102017130625A1|2019-06-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPS517262B2|1971-08-23|1976-03-06|
    DK170218B1|1993-06-04|1995-06-26|Man B & W Diesel Gmbh|Large pressurized diesel engine|
    DE19728353C1|1997-07-03|1998-09-24|Daimler Benz Ag|IC engine with turbo charger|
    US6598396B2|2001-11-16|2003-07-29|Caterpillar Inc|Internal combustion engine EGR system utilizing stationary regenerators in a piston pumped boost cooled arrangement|
    JP4049367B2|2002-07-26|2008-02-20|株式会社新エィシーイー|EGR device for diesel engine|
    CN100537814C|2004-04-19|2009-09-09|日立金属株式会社|High Cr high-ni austenitic heat-resistant cast steel reaches by its exhaust system part that constitutes|
    SE528739C2|2005-06-17|2007-02-06|Scania Cv Ab|cooler arrangement|
    US7469181B2|2007-01-29|2008-12-23|Caterpillar Inc.|High load operation in a homogeneous charge compression ignition engine|
    US8176736B2|2008-03-21|2012-05-15|Cummins Inc.|EGR apparatuses, systems, and methods|
    EP2330287B1|2009-12-04|2014-02-26|Caterpillar Motoren GmbH & Co. KG|Exhaust gas recirculation method and system|
    JP5701016B2|2010-11-09|2015-04-15|三菱重工業株式会社|Engine exhaust gas purification device|
    JP5747483B2|2010-11-16|2015-07-15|株式会社Ihi|Low pressure loop EGR device|
    FR2991725B1|2012-06-11|2017-12-15|Valeo Systemes De Controle Moteur|ASSEMBLY COMPRISING A THERMAL MOTOR AND AN ELECTRIC COMPRESSOR|
    US9365932B2|2012-06-20|2016-06-14|General Electric Company|Erosion and corrosion resistant coatings for exhaust gas recirculation based gas turbines|
    DE102014212227A1|2013-12-03|2015-06-03|Bosch Mahle Turbo Systems Gmbh & Co. Kg|compressor|
    US20170335761A1|2014-11-12|2017-11-23|Verail Technologies, Inc.|Multi-fuel internal combustion engine, fuel systems and related methods|
    DK3165776T3|2015-11-03|2020-06-29|Howden Turbo Gmbh|Turbo compressor with stiffening ribs|
    ES2842576T3|2016-02-17|2021-07-14|Nippon Steel & Sumikin Sst|Ferritic-austenitic biphasic stainless steel material and manufacturing method|
    MX2018011505A|2016-03-23|2019-01-28|Nippon Steel & Sumikin Sst|Austenitic stainless steel sheet for exhaust component having excellent heat resistance and workability, turbocharger component, and method for producing austenitic stainless steel sheet for exhaust component.|JP2020203621A|2019-06-18|2020-12-24|コベルコ建機株式会社|Work machine|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102017130625.0A|DE102017130625A1|2017-12-20|2017-12-20|Exhaust gas recirculation blower and internal combustion engine|
    [返回顶部]