EP1380734A2 - Dispositif d'échappement - Google Patents

Dispositif d'échappement Download PDF

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Publication number
EP1380734A2
EP1380734A2 EP03011620A EP03011620A EP1380734A2 EP 1380734 A2 EP1380734 A2 EP 1380734A2 EP 03011620 A EP03011620 A EP 03011620A EP 03011620 A EP03011620 A EP 03011620A EP 1380734 A2 EP1380734 A2 EP 1380734A2
Authority
EP
European Patent Office
Prior art keywords
silencer
exhaust system
exhaust
internal combustion
combustion engine
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.)
Granted
Application number
EP03011620A
Other languages
German (de)
English (en)
Other versions
EP1380734B1 (fr
EP1380734A3 (fr
Inventor
Siegfried Wörner
Ulrich Sigel
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.)
Eberspaecher Climate Control Systems GmbH and Co KG
Original Assignee
J Eberspaecher 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 J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG
Publication of EP1380734A2 publication Critical patent/EP1380734A2/fr
Publication of EP1380734A3 publication Critical patent/EP1380734A3/fr
Application granted granted Critical
Publication of EP1380734B1 publication Critical patent/EP1380734B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F01N13/02—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 separate silencers in series
    • 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
    • F01N1/166—Silencing apparatus characterised by method of silencing by using movable parts for changing gas flow path through the silencer or for adjusting the dimensions of a chamber or a pipe
    • 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
    • F01N13/107—More than one exhaust manifold or exhaust collector

Definitions

  • the present invention relates to an exhaust system for a Internal combustion engine, especially in a motor vehicle.
  • the combustion exhaust gases generated during the operation of an internal combustion engine are from the cylinder head of the internal combustion engine introduced via an exhaust manifold into an exhaust line, which the Exhaust gases are discharged into the environment.
  • the Exhaust system also for each cylinder bank of the internal combustion engine have an exhaust manifold in which the manifold pipes flow into and the merged exhaust gas flow of the introduces individual cylinders into the exhaust system.
  • the exhaust system can exhaust gas treatment facilities and / or for exhaust gas purification, e.g. a catalyst and / or a particle filter.
  • the exhaust system with two flowable in parallel Equip exhaust gas lines either by a common exhaust line coming from the internal combustion engine branch off or, preferably with V-engines, each are connected to the internal combustion engine.
  • An exhaust system with two exhaust lines with parallel flow is also referred to as a "double-strand system".
  • Such a double-strand system offers the possibility at least in each of the two parallel exhaust gas lines to arrange a silencer device. Due to the Halved volume flows can these silencer devices build relatively compact, with an improved Damping effect with a comparatively low flow resistance can be achieved.
  • the present invention addresses the problem an improved for an exhaust system of the type mentioned Specify embodiment, particularly when sufficient Damping effect an increased power output of the Internal combustion engine enables.
  • the present invention is based on the general idea that with an exhaust system that can be flowed through in parallel with two Muffler equipment is equipped two silencer devices with regard to damping effect and / or to interpret flow resistance differently and to provide a switching device that enables either only or almost exclusively one or only or almost exclusively the other or both To activate silencers.
  • By an appropriate It is actuation of the switching device possible between different damping effects and / or between different flow resistances and - depending on it - between different effects to select the engine power.
  • the invention uses the knowledge that the internal combustion engine, especially when used in a Motor vehicle, usually not permanent with regard to a maximum power output is operated, rather occur many operating phases in which only a low power output is required.
  • the power output plays the internal combustion engine in idle mode subordinate role.
  • the exhaust system according to the invention it is now possible for operating phases in which there is a drop in performance the internal combustion engine to be accepted can provide an increased damping effect and for Operating phases in which the internal combustion engine performs should unfold as uninhibited, the exhaust gas back pressure to lower, the associated in the latter case Decrease in the damping effect is accepted or is even desired, for example, by the so generated "sporty sound" an acoustic feedback of the to generate increased power output.
  • first silencer device with regard to an optimized Damping effect is designed while the second silencer device with regard to optimized engine performance is designed.
  • This design of the silencer devices enables the internal combustion engine to be used with low power to produce an optimal damping effect and to reduce the exhaust gas back pressure when there is an increased power requirement.
  • a is expedient Control device which enables the switching device depending on engine load and / or speed of the Actuate internal combustion engine. While the engine load the Corresponds to performance, the speed correlates with the exhaust gas volume flow. The flow resistance of the silencer devices is also dependent on the exhaust gas volume flow, so that the exhaust gas back pressure increases with increasing volume flow. Accordingly, the speed is an important one Parameters for the actuation of the switching device.
  • the control device operate the switching device so that the exhaust gas flow only or predominantly in a lower speed range the first silencer device flows in a middle one Speed range only or mainly through the second Muffler device flows and in an upper speed range in parallel through both silencer devices flows.
  • the exhaust system can be special simply be designed so that they are for smaller ones Exhaust gas volume flows with regard to the damping effects and with medium exhaust gas volume flows with regard to the engine power is optimized. For larger volume flows then both silencer devices are active to to reduce the overall flow resistance of the exhaust system.
  • FIG. 1 shows a circuit diagram-like schematic diagram an exhaust system according to the invention.
  • the 1 is an internal combustion engine 1, in particular of a motor vehicle, with an exhaust system 2 according to the Invention equipped.
  • This exhaust system 2 contains at least two silencer devices that can be flowed through in parallel, namely a first silencer device 3 and one second silencer device 4, for example here are designed as a rear silencer. Basically you could the two silencer devices 3, 4 in one Exhaust system must be arranged so that it is parallel are flowable.
  • the one shown here is preferred Embodiment in which the exhaust system 2 two parallel Exhaust lines, namely a first exhaust line 5 and one has second exhaust line 6, in each of which one of the Muffler devices 3, 4 is housed.
  • the two exhaust lines 5, 6 upstream of the two muffler devices 3, 4 communicating with each other are connected.
  • This communicating connection takes place in a common in the embodiment shown here Mixing room 7, to which both exhaust lines 5, 6 are connected are.
  • this mixing room 7 in a third Muffler device 8 may be formed, which here as Center silencer designed and for both exhaust lines 5, 6 is effective.
  • the third silencer device 8 also designed as a front silencer be, whereby it is then basically possible in the individual Exhaust lines 5, 6 between the front silencer 8 and the mufflers 3, 4 corresponding, not here Integrate shown middle silencer. It is also possible the third silencer device 8 as a combined To design front and middle silencers.
  • the one shown here Embodiment is the internal combustion engine 1 around a 6-cylinder V-engine with two cylinder banks 9, 10, which are each assigned three cylinders.
  • the exhaust lines 5, 6 lead the generated in the respective cylinder bank 9, 10 Exhaust gases to the common center silencer 8 and introduce the combustion gases into the mixing room 7.
  • the exhaust system 2 also includes a Switching device 11, which here in several variants 11, 11 ⁇ , 11 ⁇ , 11 ⁇ is shown.
  • the one shown here particularly simple embodiment comprises the switching device 11 Two separate switching elements for each variant 12, 13 or 12 ⁇ , 13 ⁇ or 12 ⁇ , 13 ⁇ or 12 ⁇ , 13 ⁇ .
  • This Switching elements 12, 13 are each one of the rear silencers 3, 4 assigned and accordingly on one suitable location in the associated exhaust line 5, 6 arranged.
  • the variants of the switching device 11 shown here, 11 ⁇ , 11 ⁇ , 11 ⁇ differ by different Positioning of their switching elements 12, 13; 12 ⁇ , 13 ⁇ ; 12 ⁇ , 13 ⁇ ; 12 ⁇ , 13 ⁇ within the parallel exhaust lines 5, 6.
  • the switching elements 12, 13 of the Switching device 11 in the first variant in the middle silencer 8 are integrated, the installation of the Switching elements 12 ', 13' of the switching device 11 'at the second variant each in the exhaust lines 5, 6 between the middle silencer 8 and the respective rear silencer 3 or 4.
  • the switching elements 12 '', 13 '' of the switching device 11 '' in the respective Rear silencer 3 or 4 integrated.
  • you can the switching elements 12 ⁇ , 13 ⁇ of the switching device 11 ⁇ in the fourth variant downstream of the rear silencer 3, 4 can be accommodated in the respective exhaust line 5 or 6.
  • the different positions of the individual switching elements 12, 13 can also be combined as desired.
  • the switching elements 12, 13 are here as simple flaps trained between an open position and a Locking position are adjustable, in particular switchable.
  • Fig. 1 that is first switching element 12 assigned to the first exhaust line 5 in its open position and is with a solid line shown. Its closed position is interrupted Line indicated.
  • the switching elements 12, 13 can depending on their switching position the exhaust gas path in block or open the respective exhaust line 5, 6.
  • Corresponding these switching positions is the respective exhaust system 5, 6 or the rear silencer 3, 4 arranged therein flowed through or active or not flowed through and thus inactive.
  • the switching device 11 or its switching elements 12, 13 are connected to a control device 14, for which purpose corresponding Control lines 15, 16 are provided.
  • the control unit 14 can hardware in an engine control of the internal combustion engine 1 integrated and / or implemented in software his. In any case, control unit 14 has access to operating parameters the internal combustion engine 1 and receives in particular Information about the current speed of the internal combustion engine 1 and the current engine load or power the internal combustion engine 1.
  • the two can now be flowed through in parallel Muffler devices 3, 4 with regard to their damping effect and / or with regard to their flow resistance trained differently.
  • the interpretation of the two Muffler devices 3 and 4 that can be flowed through in parallel so that the first silencer device 3, preferably for low-frequency areas, a stronger damping effect and has a greater flow resistance than the second silencer device 4, which is useful for Attenuation of high-frequency areas is designed.
  • the advantage is an embodiment in which the first Muffler device 3 is designed so that it With regard to the intended exhaust gas volume flows and Noise development shows an optimized damping effect.
  • the second silencer device 4 dimensioned so that it is suitable for certain operating states the internal combustion engine 1 achieve an optimized performance lets, for example in which the second silencer device 4 a relatively small flow resistance has, which means that even with larger exhaust gas volume flows only sets a relatively small exhaust back pressure, which the Power output of the internal combustion engine 1 favors.
  • the switching device 11 is now designed so that it optionally only the first exhaust line 5 or the first silencer device 3 or only the second exhaust line 6 or the second silencer device 4 or in parallel both exhaust lines 5, 6 or in parallel can activate both silencer devices 3, 4.
  • the switching position shown in Fig. 1 is exclusive the first exhaust line 5 or the first silencer device 3 activated. Accordingly, the second in Fig. 1 Exhaust line 6 and the second silencer device 4 disabled.
  • the activation takes place or deactivation of the individual exhaust lines 5, 6 or whose muffler devices 3, 4 by appropriate Switch positions of the switching elements 12, 13.
  • the switching device 11 can also get by a single switching element, which in the manner of a Multi-way valve works and the supplied in a corresponding manner Exhaust gas flow optionally only to the first silencer device 3 or only to the second silencer device 4 or parallel to both silencer devices 3 and 4 leads.
  • the control unit 14 is now equipped so that it Switching device 11 or its switching elements 12, 13 depending the engine load and / or the speed of the internal combustion engine 1 pressed.
  • a speed-dependent actuation the switching device 11 can be implemented in this way, for example be that the control unit 14 in a lower speed range sets the state shown in Fig. 1, in which only the first silencer device 3 from the exhaust gas flow is flowed through the internal combustion engine 1.
  • the first Silencer device 3 with regard to its damping effect is optimized, there is effective sound attenuation and low noise emissions into the environment.
  • the first silencer device 3 has a relative large flow resistance, but this has an effect at lower speeds, i.e. with smaller exhaust gas volume flows not so much in an increase in exhaust back pressure out.
  • the internal combustion engine 1 in one lower speed range do not regularly deliver particularly high performance.
  • a medium speed range for example can range from 1,000 to 3,000 rpm, switches the control device 14 the flow paths so that now exclusively the second exhaust line 6 and thus the second Muffler device 4 are flowed through during the first exhaust line 5 and the first silencer device 3 are deactivated. Since the second silencer device 4 according to the invention with regard to the lowest possible flow resistance is designed for the flow the second silencer device 4 also at relative large exhaust gas volume flows only a relatively small exhaust gas back pressure build up, whereby the power output of the Internal combustion engine 1 is favored.
  • Partial is one increased noise - at least at lower frequencies - even wanted to tell the driver about the generated "sporty sound” an audible feedback to give for the operating state of the internal combustion engine 1.
  • the control device 14 then operates the switching device 11 such that the first exhaust line 5 and thus the first damping device 3 additionally switched on become.
  • This connection can be done with a simple Embodiment take place in one stage, that is Switching device 11 or its first switching element 12 with regard to the first silencer device 3 from the Closed position switched directly to the open position.
  • the switching device 11 can also be designed so that a multi-stage or stepless activation of the first silencer device 3 can be realized.
  • the control device 14 in a transition area between the middle Speed range and the upper speed range switching on the first silencer device 3 in dependence the speed.
  • the first Switching element 12 gradually opens depending on the speed.
  • the exhaust gas flow in the lower speed range is not completely, but only almost completely, e.g. at least 80% or at least 90% through the first silencer device 3 to lead what through an appropriate, throttle position of the second not fully closed Switching element 13 can be reached.
  • the exhaust gas flow is not complete, but only almost completely, in particular at least 80% or at least 90% through the second silencer device 4 perform what is also by an appropriate, by the Different throttle position of the first Switching element 12 is accessible.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
EP03011620A 2002-07-10 2003-05-22 Dispositif d'échappement Expired - Fee Related EP1380734B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10231056 2002-07-10
DE10231056A DE10231056A1 (de) 2002-07-10 2002-07-10 Abgasanlage

Publications (3)

Publication Number Publication Date
EP1380734A2 true EP1380734A2 (fr) 2004-01-14
EP1380734A3 EP1380734A3 (fr) 2004-03-03
EP1380734B1 EP1380734B1 (fr) 2006-02-01

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EP03011620A Expired - Fee Related EP1380734B1 (fr) 2002-07-10 2003-05-22 Dispositif d'échappement

Country Status (3)

Country Link
US (1) US6938729B2 (fr)
EP (1) EP1380734B1 (fr)
DE (2) DE10231056A1 (fr)

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EP2788599A1 (fr) * 2011-12-09 2014-10-15 Kesstech GmbH Dispositif de silencieux
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EP1798390A2 (fr) 2005-12-15 2007-06-20 Friedrich Boysen GmbH & Co. KG Système d'échappement pour moteurs à combustion interne
DE102006020155A1 (de) * 2005-12-15 2007-06-21 Friedrich Boysen Gmbh & Co. Kg Abgasanlage für Brennkraftmaschinen
EP1798390B2 (fr) † 2005-12-15 2014-11-12 Friedrich Boysen GmbH & Co. KG Système d'échappement pour moteurs à combustion interne
EP2788599A1 (fr) * 2011-12-09 2014-10-15 Kesstech GmbH Dispositif de silencieux
CN110067626A (zh) * 2018-01-22 2019-07-30 埃贝斯佩歇排气技术有限责任两合公司 消声器
US11377989B2 (en) 2018-01-22 2022-07-05 Purem GmbH Muffler

Also Published As

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DE50302312D1 (de) 2006-04-13
US20040006970A1 (en) 2004-01-15
DE10231056A1 (de) 2004-02-05
EP1380734B1 (fr) 2006-02-01
US6938729B2 (en) 2005-09-06
EP1380734A3 (fr) 2004-03-03

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