EP1457647B1 - Abgasanlage einer Brennkraftmaschine - Google Patents

Abgasanlage einer Brennkraftmaschine Download PDF

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Publication number
EP1457647B1
EP1457647B1 EP04000442A EP04000442A EP1457647B1 EP 1457647 B1 EP1457647 B1 EP 1457647B1 EP 04000442 A EP04000442 A EP 04000442A EP 04000442 A EP04000442 A EP 04000442A EP 1457647 B1 EP1457647 B1 EP 1457647B1
Authority
EP
European Patent Office
Prior art keywords
exhaust
collector housing
inlet pipes
exhaust system
housing
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.)
Expired - Lifetime
Application number
EP04000442A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1457647A1 (de
Inventor
Diez Rainer
Bühler Frank
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.)
Friedrich Boysen GmbH and Co KG
Original Assignee
Friedrich Boysen GmbH and Co KG
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 Friedrich Boysen GmbH and Co KG filed Critical Friedrich Boysen GmbH and Co KG
Publication of EP1457647A1 publication Critical patent/EP1457647A1/de
Application granted granted Critical
Publication of EP1457647B1 publication Critical patent/EP1457647B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/008—Mounting or arrangement of exhaust sensors in or on exhaust apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/011—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more purifying devices arranged in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1883—Construction facilitating manufacture, assembly, or disassembly manufactured by hydroforming
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/10—Tubes having non-circular cross section

Definitions

  • the present invention relates to an exhaust system of an internal combustion engine having at least one exhaust manifold with a plurality of inlet pipes for connection to exhaust ports of the internal combustion engine and a collector for combining the intake pipes, having an outlet opening which is connected to subsequent elements of the exhaust system, including a catalyst housing, wherein the collecting means is designed as a one-piece collector housing.
  • the exiting from the outlets of an internal combustion engine exhaust gases are usually summarized via exhaust manifold in one or more exhaust main lines.
  • the exhaust manifold has a plurality of inlet pipes and a collecting device with an outlet opening, which is connected to a further exhaust pipe or directly to an exhaust gas catalytic converter.
  • the exhaust system in the exhaust manifold has significance for the exhaust back pressure.
  • so-called lambda probe is flown in a suitable manner.
  • a goal here is to flow as evenly as possible on the lambda probe with the individual exhaust gas streams of all intake pipes in order to have the same conditions for each cylinder of the internal combustion engine.
  • the flow of a subsequent catalyst should be as uniform as possible.
  • EP-A2-733 788 discloses a pipe junction of two exhaust pipes through a manifold. A collector housing is not disclosed here. The same applies to DE-U-296 17 304, which shows a pipe junction of four exhaust pipes.
  • the present invention has for its object to improve an exhaust system of the type mentioned.
  • an advantageous lambda and Katalysatoranströmung should be achieved.
  • the production should be as simple as possible and the stability of the exhaust system as high as possible.
  • the collecting device By forming the collecting device as a separate collector housing, an advantageous construction of the exhaust system can be achieved.
  • the production can be simplified because the one-piece collector housing, for example, by hydroforming including necklaces for the pipe connection is inexpensive to produce and additionally only simple pipes are needed.
  • the collector housing at least two, preferably three openings for connecting inlet pipes and an outlet opening, via which the collector housing is connected to subsequent parts of the exhaust systems.
  • collector housing made of rigid material with inlet pipes of relatively flexible material which allow a length compensation due to different thermal expansion.
  • the inlet pipes can be made relatively short, so that the collector housing can be brought very close to the exhaust gas outlets of the internal combustion engine. This saves space and increases advantageously the exhaust gas temperature in a subsequent catalyst.
  • the collector housing additionally has an opening for inserting a lambda probe.
  • the lambda probe is thus located in a space in which the exhaust gas streams of all exhaust pipes of the exhaust system meet, so that a largely uniform flow of the lambda probe can be achieved by the different exhaust gas streams.
  • this allows the redesign of the exhaust gas flow for the Katalysatoranströmung after the lambda probe done, so separated from the Lambdaanströmung. Through this separation, both streams can be optimized for each.
  • an outlet pipe is connected to the outlet opening of the collector housing, which is designed in particular as a catalyst inlet pipe.
  • the outlet tube thus fulfills a dual function, and good catalyst inflow can be achieved.
  • the Katalysatoranströmrohr is guided to close to the catalyst, wherein the catalyst housing is connected via a Katalysatoranströmrohr surrounding, in particular funnel-shaped tube directly to the collector housing.
  • the openings in the collector housing are at least partially punched out according to a further embodiment of the invention. As a result, the production can be simplified and cheapened.
  • the inlet pipes open into the collector housing such that the exhaust gas flow directions of all exhaust gas streams converge in a collection point.
  • the exhaust system the exhaust gas flow is optimized.
  • this results in the possibility of arranging the lambda probe with its probe tip in a point which is at least substantially uniformly flowed by the individual exhaust gas streams of all connected inlet pipes. Thereby, the engine control can be improved in the desired manner.
  • the inlet pipes preferably lead into the collector housing such that the exhaust gas flow directions are each inclined to a plane perpendicular to the exhaust gas flow direction in the outlet opening, such that the exhaust gas flow directions of the inlet pipes point to the same side of this plane as the exhaust gas flow direction in the outlet opening.
  • the outflow of the exhaust gas through the outlet opening is thereby improved and the exhaust backpressure can be reduced.
  • a preferred arrangement of the lambda probe is on the side facing away from the outlet opening of the collector housing. On the one hand, this makes it possible to achieve the arrangement of the probe tip in the collection point of the exhaust gas flows, and on the other hand, the exhaust gas flow is relatively little affected. In addition, this is structurally advantageous.
  • the inlet pipes open in particular into the collector housing in such a way that the collection point of the exhaust gas streams is located inside the collector housing.
  • the lambda inflow takes place within the collector housing and before the realignment of the exhaust gas flow for the catalyst outflow. This separation further improves the flow of the lambda probe and the catalyst.
  • the collector housing has molded connecting pieces for the inlet pipes and / or the outlet pipe.
  • This embodiment has a constructive advantages and on the other hand, the assembly of the exhaust system is simplified. Above all, this embodiment enables a welding of the collector housing with the inlet pipes and the outlet pipe on the outside. An intrusion of weld beads into the interior of the exhaust system and the associated problems, in particular the risk of deterioration of the catalyst, can be avoided.
  • the collector housing is at least partially formed mirror-symmetrically to a plane perpendicular to the connecting line of the exhaust gas outlets of the internal combustion engine.
  • the exhaust gas flow and in particular the flow of the lambda probe can thereby be further uniformed.
  • the inlet pipes and / or the lambda probe are arranged and formed mirror-symmetrically.
  • the exhaust gas flow can be evened out even further hereby.
  • this embodiment has the advantage that the components of the exhaust system can be standardized. In particular, the same components can be used for different exhaust strands.
  • these may be at least partially identical in design, despite the normally different installation situation at the various outlets of the internal combustion engine. As a result, costs can be saved and storage can be simplified.
  • the inlet pipes are preferably formed at least in sections with an oval cross-section. As a result, a higher deformability of the inlet pipes is achieved, by which a better length compensation can take place with different thermal expansion of the pipes.
  • the exhaust system partially shown in Figures 1 and 2 comprises two three-jet exhaust manifold 1, 1 ', the inlet side with a motor flange 2, 2' and the outlet side via inlet funnel 3a, 3a 'with a catalyst housing 3, 3' are connected.
  • each case includes a continuing exhaust pipe 4, 4', which in turn is connected in each case with a flange 5, 5 'for connection to a further exhaust pipe.
  • the walls of the collector housing 9, 9 ' enclose a collecting space 13, in which the exhaust gas streams from the inlet pipes 6, 6', 7, 7 ', 8, 8' out.
  • the exhaust gas flow directions I, II, III are directed to a common collection point 14 in the interior of the collecting space 13.
  • the walls of the collector housing 9, 9 ' also have a recess 15, in which a lambda probe 16, 16' is inserted. Namely, the lambda probe 16, 16 'inserted into the recess 15 such that its probe tip 17 is in the region of the collection point 14.
  • the lambda probe 16 is always at least approximately the same flow.
  • 1 'inlet pipes 6, 6 ', 7, 7' and 8, 8 'thus result in substantially equal inflow conditions. As a result, the engine control can be improved accordingly.
  • the lambda probe 16, 16 ' can be screwed into the recess 15.
  • the lambda probe 16, 16 ' has an external thread 18 and the recess 15 an internal thread 19.
  • the outlet pipe 21 can also, as shown in Fig. 6, be integrally formed on the collector housing 9, 9 '. In both cases, the flow pipe 21 is formed so that the catalyst is optimally flowed by the exhaust gas stream.
  • the inflow pipe 21 is also guided to close in front of the catalyst body 3b.
  • an annular space 21a is formed between the outlet tube 21 and the inlet funnel 3a, 3a 'of the catalyst housing 3, 3', which is connected in shunt to the exhaust gas flow and acts as an insulation for the exhaust gas flow.
  • the inlet pipes 6, 6 ', 7, 7' and 8, 8 ' are each connected by welding to the collector housing 9, 9'.
  • the weld is located on the outside of the exhaust system, so that no welding Impurities can get into the interior of the exhaust system.
  • the inlet pipes 6, 6 ', 7, 7' and 8, 8 ' are each preferably made by hydroforming and have an oval cross-section in a central region between their respective inlet end and their respective outlet end.
  • the exhaust manifolds 1, 1 'with inlet pipes 6, 6', 7, 7 'and 8, 8' and the collector housing 9, 9 ', but without outlet pipe 21, are mirror-symmetrical to a plane IV, which at the same time forms the longitudinal center plane of the motor flange 2, 2 '.
  • the recess 15 for the lambda probe 16 and the lambda probe 16 itself are formed mirror-symmetrically to this plane IV.
  • the two exhaust manifolds 1 and 1 ' are substantially identical to each other, although the continuing elements of the exhaust system such as outlet pipe 21 and catalyst housing 3, 3' are formed differently.
  • the inlet pipes 6, 6 ', 7, 7' and 8, 8 ' are also shaped so that they not only hold the screw holes 22 for mounting the motor flange 2, 2' as accessible as possible on the engine block, but also so that the exhaust gas streams I, II and III are inclined to a plane V, which is perpendicular to the exhaust gas flow direction VI in the outlet pipe 21.
  • the inclination is chosen so that the exhaust gas flow directions I, II and III on entering the collector housing 9, 9 'on the same side of the plane V have, as the exhaust gas flow direction VI in the outlet tube 21.
  • collector housing 9, 9 'of relatively rigid material and relatively soft inlet pipes 6, 6', 7, 7 ', 8, 8'.
  • Collector housing 9, 9 'and inlet pipes 6, 6', 7, 7 '8, 8' are each relatively easy to produce, with high accuracy can be met.
  • this can be a particularly compact arrangement with close-coupled catalyst can be created.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Analytical Chemistry (AREA)
  • Exhaust Silencers (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Characterised By The Charging Evacuation (AREA)
EP04000442A 2003-03-10 2004-01-12 Abgasanlage einer Brennkraftmaschine Expired - Lifetime EP1457647B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20303759U 2003-03-10
DE20303759U DE20303759U1 (de) 2003-03-10 2003-03-10 Abgasanlage einer Brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP1457647A1 EP1457647A1 (de) 2004-09-15
EP1457647B1 true EP1457647B1 (de) 2006-08-23

Family

ID=32748367

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04000442A Expired - Lifetime EP1457647B1 (de) 2003-03-10 2004-01-12 Abgasanlage einer Brennkraftmaschine

Country Status (5)

Country Link
US (1) US7578124B2 (es)
EP (1) EP1457647B1 (es)
AT (1) ATE337477T1 (es)
DE (2) DE20303759U1 (es)
ES (1) ES2270182T3 (es)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7874149B2 (en) * 2005-08-17 2011-01-25 Kawasaki Jukogyo Kabushiki Kaisha Exhaust apparatus for vehicle, and motorcycle having the same
DE102006021674B4 (de) * 2006-05-10 2014-05-15 Tenneco Gmbh Verfahren zum Herstellen von Abgaskrümmern
US8347615B2 (en) * 2006-06-07 2013-01-08 Ford Global Technologies Exhaust flow director and catalyst mount for internal combustion engine
JP4748081B2 (ja) * 2007-02-23 2011-08-17 トヨタ自動車株式会社 内燃機関の排気装置
DE102007062660A1 (de) * 2007-12-24 2009-06-25 J. Eberspächer GmbH & Co. KG Abgaskrümmer
DE102009018104A1 (de) * 2008-11-10 2010-05-12 Friedrich Boysen Gmbh & Co. Kg Abgaskrümmer
US8353154B2 (en) * 2009-09-21 2013-01-15 GM Global Technology Operations LLC Thermally efficient exhaust treatment system for an internal combustion engine
KR101196305B1 (ko) * 2010-05-25 2012-11-06 우신공업 주식회사 배기 매니폴드
US20120079818A1 (en) * 2010-09-30 2012-04-05 Svihla Gary R Filtration arrangement for an exhaust aftertreatment system for a locomotive two-stroke diesel engine
JP5849986B2 (ja) * 2013-04-18 2016-02-03 マツダ株式会社 エンジンの触媒付き排気管構造
DE102013109446B4 (de) * 2013-08-30 2015-11-26 Benteler Automobiltechnik Gmbh Abgaskrümmer mit Isolationshülse
EP3190279B1 (en) * 2014-09-03 2019-05-08 Nissan Motor Co., Ltd Exhaust device for internal combustion engine

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JP3791419B2 (ja) * 2002-01-17 2006-06-28 日産自動車株式会社 内燃機関の排気装置

Also Published As

Publication number Publication date
ES2270182T3 (es) 2007-04-01
EP1457647A1 (de) 2004-09-15
US7578124B2 (en) 2009-08-25
DE20303759U1 (de) 2004-07-22
ATE337477T1 (de) 2006-09-15
DE502004001230D1 (de) 2006-10-05
US20040226291A1 (en) 2004-11-18

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