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公开(公告)号：US10400655B2
公开(公告)日：2019-09-03
申请号：US15563250
申请日：2016-03-23
发明人： Andreas Döring , Martin Faber , Richard Losher , Francis Nana
摘要： Catalytic converter unit for an exhaust gas catalytic converter, in particular an SCR catalytic converter unit for an SCR catalytic converter of a marine diesel internal combustion engine, with multiple catalytic converter modules. Each catalytic converter module has a ceramic catalytic converter body through which exhaust gas flows and a metallic casing for the ceramic catalytic converter body. The respective ceramic catalytic converter body is received in the respective metallic casing and is surrounded in certain sections by the latter. The catalytic converter modules are positioned with first flowed-through ends on a support grating. A counter-brace is positioned at the opposite second flowed-through ends of the catalytic converter modules, and the catalytic converter modules are clamped between the support grating and the counter-brace.
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公开(公告)号：US10450911B2
公开(公告)日：2019-10-22
申请号：US15520212
申请日：2015-10-21
发明人： Andreas Döring
摘要： An exhaust-gas aftertreatment device (10) for an internal combustion engine, particularly for a marine diesel internal combustion engine operated using heavy fuel oil, includes a housing (11); an exhaust-gas chamber (12) defined by the housing (11), for permitting exhaust gas to flow continuously through the housing (11), an inlet (13) for permitting exhaust gas to flow into the housing and an outlet (14) for permitting exhaust gas to flow out of the housing (11); a sound damping chamber (15), defined by the housing (11) and coupled with the exhaust-gas chamber (12). The sound dampening chamber (15) is constructed to receive a fluid or a pourable solid at a fill level depending on the frequency of an exhaust sound to be damped.
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公开(公告)号：US10221740B2
公开(公告)日：2019-03-05
申请号：US15310387
申请日：2015-05-21
发明人： Andreas Döring
IPC分类号： F01N3/20 , B01D53/50 , B01D53/58 , B01D53/78 , B01D53/92 , B01D53/94 , F02B37/18 , F01N3/04 , F01N3/029 , F01N13/00
摘要： An exhaust gas post treatment system for an internal combustion engine, in particular a heavy fuel oil-powered engine, including an SCR catalyst, using ammonia as a reducing agent for the denitration of the exhaust gas, and a device positioned upstream of the SCR catalyst by which ammonia or an ammonia precursor substance, which is converted to ammonia, is introduced upstream of the SCR catalyst. Downstream of the SCR catalyst an exhaust gas scrubber is positioned, by which excess ammonia, contained in the exhaust gas leaving the SCR catalyst, together with sulfur oxides, can be scrubbed out of the exhaust gas forming ammonium salts while maintaining a pH value of approximately 6. For the control thereof, a bypass around the SCR catalyst can be provided as a westgate, or comprising an additional SCR catalyst.
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公开(公告)号：US10174692B2
公开(公告)日：2019-01-08
申请号：US14915970
申请日：2014-09-02
发明人： Andreas Döring , Matthias Auer
摘要： Method for the operation of an internal combustion engine having a plurality of cylinders (11 to detect misfires. An exhaust gas sensor at the exhaust gas of every cylinder of the internal combustion engine measures at least one actual exhaust gas value individually for the respective cylinder, and the respective measured actual exhaust gas value is compared with a reference exhaust gas value to determine at least one cylinder-specific deviation between the reference exhaust gas value and the actual exhaust gas value for each of the cylinders. It is determined for every cylinder based on the cylinder-specific deviation or based on every cylinder-specific deviation whether or not misfires are occurring at the respective cylinder.
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公开(公告)号：US10190471B2
公开(公告)日：2019-01-29
申请号：US15310404
申请日：2015-04-10
发明人： Andreas Döring
摘要： Disclosed is an exhaust-gas after-treatment device for an internal combustion engine, in particular for a ship's diesel internal combustion engine that is operated with heavy oil, including: a housing through which exhaust gas flows; exhaust-gas purification chambers formed in the housing, which chambers hold catalysts and/or particulate filters in order to purify the exhaust gas; and muffler chambers formed in the housing, which chambers have a defined depth for muffling sound in the flow direction. The exhaust-gas purification chambers and the muffler chambers are arranged spatially in series and parallel to one another on the flow side.
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公开(公告)号：US10100755B2
公开(公告)日：2018-10-16
申请号：US15515382
申请日：2015-09-30
发明人： Andreas Döring , Alexander Knafl , Mirko Bugsch
摘要： A method for operating a system having a plurality of internal combustion engines coupled together such that then outputs are drawn off by a common load, a downstream individual exhaust gas aftertreatment device, in which the exhaust gas of a particular engine undergoes an individual exhaust gas aftertreatment, positioned downstream of each engine, or a common exhaust gas aftertreatment device, in which the exhaust gas undergoes a common exhaust gas aftertreatment, positioned downstream of to the engine. To regenerate an exhaust gas aftertreatment device, the drive output of one engine is reduced, the temperature of the exhaust gas is increased, and the drive output of a second engine is increased such that the drive output reduction is at least partially compensated for.
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公开(公告)号：US10077701B2
公开(公告)日：2018-09-18
申请号：US15326354
申请日：2015-07-23
发明人： Andreas Döring , Richard Losher
CPC分类号： F01N3/2828 , B01D53/9418 , B01D2255/70 , B01J35/04 , F01N3/2066 , F01N3/2853 , F01N13/017 , F01N2330/48 , F01N2350/02 , F01N2450/30 , F01N2590/02 , Y02T10/24
摘要： A catalyst unit includes: a ceramic catalyst body through which exhaust gas flows and having a substantially cuboid contour with a substantially rectangular inflow side and a substantially rectangular outflow side; a housing that at least partially encloses the catalyst body, and at least one bearing mat positioned in a gap formed between the catalyst body and the housing. Borders or edges of the catalyst body, which delimit the inflow side and the outflow side, each have dimensions of between 210 mm and 280 mm. The gap between the catalyst body and the housing, seen perpendicularly to the throughflow direction of the catalyst body, has a dimension determined according to the following relationship: s≤p*5, s being the dimension of the gap in mm and p the dimensionless amount of the density of the or each bearing mat expressed in kg/m2.
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公开(公告)号：US09803575B2
公开(公告)日：2017-10-31
申请号：US14908602
申请日：2014-07-28
发明人： Andreas Döring , Markus Bauer
CPC分类号： F02D41/0235 , F01N3/208 , F01N9/00 , F01N11/007 , F01N2430/00 , F01N2550/02 , F01N2560/026 , F01N2610/02 , F02D41/0027 , F02D41/1461 , F02D2250/36 , Y02T10/24 , Y02T10/47
摘要： A method for operating an internal combustion engine having a motor and an exhaust gas aftertreatment system having an exhaust gas aftertreatment component, wherein exhaust gas formed in the motor during combustion of fuel is guided via the exhaust gas aftertreatment system for cleaning, includes: determining an exhaust gas actual value that depends upon an actual value of a nitrogen dioxide fraction in the exhaust gas upstream of the exhaust gas aftertreatment component; and changing at least one operating parameter for the motor such that the actual value of the nitrogen dioxide fraction is brought closer to a corresponding reference value for the nitrogen dioxide fraction.
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公开(公告)号：US10648423B2
公开(公告)日：2020-05-12
申请号：US16033028
申请日：2018-07-11
发明人： Andreas Döring , Armin Weber
IPC分类号： F02D41/30 , F02D35/02 , F02D41/00 , F02D41/20 , F02D41/24 , F02D41/22 , F02D19/06 , F02D41/14 , F02D41/34 , F01L1/26
摘要： A method for operating an internal combustion engine with multiple cylinders. Each cylinder of the internal combustion engine includes at least one fuel injector, and each fuel injector is activated for opening and closing via a solenoid valve of the respective fuel injector. Structure-borne sound waves emitted by the fuel injectors and/or accelerations caused by the fuel injectors are detected by measurement. The structure-borne sound waves detected by measurement and/or the accelerations detected by measurement are evaluated, and based on the evaluation, characteristics of the fuel injectors are automatically determined.
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公开(公告)号：US10344656B2
公开(公告)日：2019-07-09
申请号：US15833489
申请日：2017-12-06
发明人： Andreas Döring , Ingo Bader
摘要： A mixing apparatus for mixing a precursor substance of a reducing agent with exhaust gas, having a housing that provides a mixing chamber and a silencer. The housing inlet side has an inlet connection for exhaust gas and an outlet side having an outlet connection for reducing agent intermixed with the exhaust gas to be discharged. Longitudinal axes of the inlet and outlet connections are offset and parallel relative to one another. An introduction device introduces a precursor substance of the reducing agent and is positioned at the inlet side in a region of the outlet connection longitudinal axis. A length of the housing between the inlet and outlet side at least 1.9 to 7 times a diameter of the inlet connection. A width of the housing is maximally 3 times the diameter of the inlet connection.
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