EP1215372A2 - Système d'échappement d'un véhicule à moteur - Google Patents

Système d'échappement d'un véhicule à moteur Download PDF

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Publication number
EP1215372A2
EP1215372A2 EP01127515A EP01127515A EP1215372A2 EP 1215372 A2 EP1215372 A2 EP 1215372A2 EP 01127515 A EP01127515 A EP 01127515A EP 01127515 A EP01127515 A EP 01127515A EP 1215372 A2 EP1215372 A2 EP 1215372A2
Authority
EP
European Patent Office
Prior art keywords
actuator
exhaust system
motor vehicle
control unit
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.)
Withdrawn
Application number
EP01127515A
Other languages
German (de)
English (en)
Other versions
EP1215372A3 (fr
Inventor
Siegfried Wörner
Peter Dr. Zacke
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 EP1215372A2 publication Critical patent/EP1215372A2/fr
Publication of EP1215372A3 publication Critical patent/EP1215372A3/fr
Withdrawn legal-status Critical Current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
    • F01N13/04—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 silencers in parallel, e.g. having interconnections for multi-cylinder engines
    • 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
    • F01N1/165—Silencing apparatus characterised by method of silencing by using movable parts for adjusting flow area
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2496—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories the memory being part of a closed loop
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/04—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits

Definitions

  • the invention relates to an exhaust system of a motor vehicle with an electronic control unit to control the Motor vehicle engine using at least one in the control unit stored engine map and with an actuator for Change in the flow resistance of the exhaust gas flowing through to change the damping characteristics.
  • DE 195 03 322 A1 describes an exhaust gas system in the form of a Silencer system with variable damping characteristics known in which a silencer to change the flow Exhaust gas in the inlet pipe has a poppet valve, the Free valve lifter end in connection with an overpressure box stands.
  • the overpressure side of the overpressure can is over a pressure line with the inlet side of the inlet pipe connected. Thanks to the overpressure control, it opens and closes the valve plate of the poppet valve continuously so that also the acoustic properties of the silencer change continuously.
  • the invention has for its object an exhaust system to provide the type mentioned that with simple Targeted in terms of acoustic properties can be influenced.
  • the essence of the invention is that in an exhaust system Motor vehicle with an electronic control unit for control of the motor vehicle engine using one in the control unit stored engine map of the type mentioned each operating point in the engine map at least one of the specified Flow resistance of the exhaust gas flowing through corresponding Value is assigned, with the given Flow resistance values in at least one Level of the engine map are stored in the control unit, and in each operating point of the engine map of the one assigned Flow resistance corresponding value at least one Level serves as a control or control variable of the actuator.
  • the stepless positions can be controlled adjustable actuator, especially via flap positions of the continuously adjustable actuator, which the given flow resistance values in the control unit can be programmed.
  • At least two levels a certain level of the engine map can be selected can, whereby the values of the selected level Control variable of the actuated actuator are.
  • three levels are included different values stored in the control unit.
  • the first, second and third levels correspond a comfort mode, a normal mode and a power operation variant of the motor vehicle.
  • the comfort mode variant has high flow resistance values set, which has the consequence that in particular the low-frequency components of the operating noise of the exhaust system be strongly dampened.
  • the motor vehicle owns then an exhaust system with a calm, worn "sound".
  • mean flow resistance values are set. Then especially the low-frequency ones Parts of the exhaust noise less damped.
  • the motor vehicle then has an exhaust system a medium or average, conventional in itself "Sound".
  • the actuator is preferably integrated in a silencer or at least partially structurally with the silencer educated.
  • the actuator can also in a flow branch integrated or at least partially with the flow branch be structurally trained.
  • the actuator preferably has a closing body, the exhaust gas lines or exhaust tracts connected after adjustment applied the same or different.
  • the actuator is in particular pneumatic or electrical actuated.
  • the invention creates a system that is regulated Flow resistance of the exhaust system the exhaust back pressure and influences the noise behavior.
  • the flow resistance can be programmed using a special actuator in the system of the engine control unit at every operating point become.
  • the sound level or the "sound character" may be preferred by the driver or another operator can be selected in three variants. This allows meets increased demands on the sound character of an engine become. There may be a certain sound character adjustable in advance by the vehicle manufacturer.
  • the invention takes advantage of the knowledge that often an electronic one that is already present in the motor vehicle Control unit with stored engine map, which for every operating point, d. H. depending on each load point the engine speed, for example the injection quantity of the fuel to be injected, with simple means, Extension of the software, can be extended, and not just the amount of fuel to be injected, for example, but also in one or more additional levels of Engine map defines the flow resistance of the exhaust system. Then the regulated flow resistance the exhaust system the exhaust back pressure and thus the noise behavior influenced and targeted in one or more variants can be set. The possible variants are previously programmed into the control unit.
  • an exhaust system 1 of a motor vehicle provided in the form of a double silencer system, which has two silencers 2, 3.
  • Exhaust system 1 is an electronic control unit 50 for control a motor vehicle engine 51 with the help of a in the control unit stored engine map K via a control line 52, being in the engine map K in addition to engine control three levels E, E 'and E "are defined and stored, an actuator 4 of the exhaust system 1 via a control line 53 to change the flow resistance of the flowing Exhaust gas and thus change in the damping characteristic head for.
  • each operating point in the engine map K ie each load point L of the motor vehicle engine 51 as a function of its speed D, has three different values S 1 ... S n corresponding to the predetermined flow resistance of the exhaust gas flowing through; S 1 '... S n '; S 1 "... S n " assigned.
  • the values S 1 ... S n are set in a basic setting about the positions of the continuously adjustable actuator 4 to be controlled, in particular about the flap positions of the continuously adjustable actuator.
  • a specific level E, E 'or E “of the engine map K can be selected from the three levels, the values of which are S 1 ... S n ; S 1 ' ... S n 'or S 1 " ... S n "are then the manipulated variable or control variable of the actuated actuator 4.
  • the three levels stored in the control unit with different ones Values define a comfort mode, one Normal operation variant and a power operation variant.
  • the first level E corresponds to the comfort mode of the Motor vehicle with a strong damping of the low-frequency Parts of the operating noise of the exhaust system takes place.
  • the second level E ' corresponds to the normal operating variant of the motor vehicle, in which an average damping of the low-frequency Share of the operating noise of the exhaust system he follows.
  • the third level E corresponds to the power operation variant of the motor vehicle, in which a small Attenuation of the low-frequency components of the operating noise of the exhaust system.
  • the actuator 4 can be integrated in the silencers 2, 3 his. But it can also in a flow branch 5 of the Exhaust system 1 integrated or at least partially with this Component be structurally united.
  • the actuator 4 has a closing body 14, which at Adjustment of downstream exhaust lines or exhaust tracts 9, 10 applied the same.
  • the actuator 4 is actuated pneumatically. Also be electrical Switching means according to Figures 4 and 5 used.
  • the flow branch partially containing the actuator 4 5 has an input 6 and two outputs 7, 8. Each Output 7 or 8 is via an exhaust line or exhaust tract 9 or 10 in the form of a pipe with the silencer 2 or 3 connected.
  • the flow cross-section is through the actuator 4
  • the input 6 can be changed.
  • the two Silencers 2, 3 have the same structure.
  • the pipelines have the same flow cross-section.
  • the exits 7, 8 of the pipe branch 5 are symmetrical to the axial axis 11 of the entrance 6 of the pipe branch, where the actuator 4 is longitudinal and symmetrical to the axial axis of the entrance extends.
  • the motor vehicle motor 51 belonging to the motor vehicle is a powerful drive. It has an intake manifold that over a suction or control line 20 with a separate actuating element 16 of the actuator 4 is connected.
  • the Control line 20 is an electromagnetically actuated 3/2-way valve, as shown in Figures 4 and 5 is.
  • the 3/2-way valve in turn has one electrical control line with the electronic control unit 50 of the motor vehicle engine 51 is connected. On the How the 3/2-way valve works will be discussed later.
  • the actuator 4 is in the direction of the Entrance 6 largely closed position a spring 12 in the form of a compression spring and biased in front of the inlet 6 increased back pressure p of the flowing exhaust gas against the force of the compression spring in a release of the entrance Opening position movable.
  • the actuator 4 has one in engagement with the input bringable closing body 14 with a diameter such that in the closed position a circumferential gap s to the inner diameter of input 5 remains free.
  • the closed position of the actuator remains annular Flow area for the exhaust gas in the area of the otherwise closed input 6 of the manifold 5 in every operating case the silencer system open.
  • the actuator 4 is a control valve with a valve lifter 13, wherein the closing body 14 is a flattened valve plate is slightly conical on its upstream side the peripheral edge is aerodynamically provided with curves.
  • the end positions of the control valve i.e. the closed position and the open position are through the separate actuator 16 determined, which will be discussed.
  • the actuator 4 is an active switching element, the Force of the counter pressure p on the separate actuating element 16 of the actuator 4 acts, which in turn is the actuator 4 moved to its open position.
  • the separate actuating element 16 is in particular a vacuum box, the low pressure side 18 of a membrane 19 in the vacuum box via the control line 20 with a vacuum pump or with the aforementioned intake manifold of the motor vehicle engine 51 is connected, and it is the stiffened platy circular diaphragm center with the free end of the valve lifter 13 of a poppet valve connected to the Closing body 14 is facing away.
  • the pressure side 17 on the other side of the membrane 19 Vacuum can has a housing vent hole and therefore Atmospheric pressure or is directly exposed to the atmosphere.
  • the compression spring 12 is on the low pressure side 18 of the membrane 19 arranged in the vacuum can along the axial axis 11. On the one hand, it is supported axially on the flat membrane center 28 and on the other hand on a central mold seat in the Vacuum can. The compression spring is in the vacuum box clamped centrally with preload.
  • the membrane center 28 strikes a graduated axial stop of the housing of the vacuum box on.
  • the housing has an integral hollow cylindrical Housing section 29 which is coaxial in the direction of Closing body 14 extends at a distance from the valve lifter 13 and through a central opening in an intermediate wall 25 the pipe branch 5 straight to the inside of the pipe branch reaches and is attached to the partition.
  • the actuator 4 has a valve tappet 13 on that is sealed and slidable by a sealing plug 27 in the aforementioned intermediate wall 25 of the pipe branch 5 between the two outputs 7, 8 along the Axial axis 11 of the input 6 to the outside up to which the compression spring housing of the vacuum box is guided, the valve lifter 13 at the stiffened plate-like membrane center 28 of the membrane 19 on the pressure side of the vacuum box is attached.
  • the sealing plug 27 is in the hollow cylindrical housing section 29 of the housing of the vacuum box sealed.
  • Switch valve 21 in the form of a 3/2-way valve according to Figures 4 and 5 has a first connection 22 for Intake pipe of the motor vehicle engine 51, a second connection 23 to the low pressure side 18 of the vacuum box and a third Connection 24 to the atmosphere, in which one (first) Valve position of the first port 22 with the second port 23 and in the other (second) valve position the second Terminal 23 is connected to the third terminal 24.
  • the first valve position is shown in FIG. 4.
  • the second valve position is illustrated in Figure 5.
  • the engine management controlled solenoid changeover valve causes the diaphragm box with negative pressure (-> valve "OPEN") or with atmospheric pressure (Ventilation -> valve "CLOSED”) is supplied.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
EP01127515A 2000-12-14 2001-11-17 Système d'échappement d'un véhicule à moteur Withdrawn EP1215372A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000162472 DE10062472C1 (de) 2000-12-14 2000-12-14 Abgas-System eines Kraftfahrzeuges
DE10062472 2000-12-14

Publications (2)

Publication Number Publication Date
EP1215372A2 true EP1215372A2 (fr) 2002-06-19
EP1215372A3 EP1215372A3 (fr) 2003-12-17

Family

ID=7667239

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01127515A Withdrawn EP1215372A3 (fr) 2000-12-14 2001-11-17 Système d'échappement d'un véhicule à moteur

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EP (1) EP1215372A3 (fr)
DE (1) DE10062472C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1324224C (zh) * 2003-04-29 2007-07-04 海因里希·吉勒特有限责任公司 具有可变声学特性的消音器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016210041A1 (de) * 2016-06-07 2017-12-07 Bayerische Motoren Werke Aktiengesellschaft Mehrflutige Abgasanlage mit kontinuierlicher Klappensteuerung
DE102019108823A1 (de) * 2019-04-04 2020-10-08 Bayerische Motoren Werke Aktiengesellschaft Abgasanlage mit kontinuierlicher Klappensteuerung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19503322A1 (de) 1995-02-02 1996-08-08 Gillet Heinrich Gmbh Schalldämpfer mit variabler Dämpfungscharakteristik

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Publication number Priority date Publication date Assignee Title
DE3617603C2 (de) * 1985-05-24 2001-08-09 Orbital Eng Pty Zweitakt-Verbrennungsmaschine
FR2613089B1 (fr) * 1987-03-24 1993-09-03 Centre Nat Rech Scient Procede et dispositif pour la reduction des fluctuations de debit d'un ecoulement fluide dans une canalisation
US4941319A (en) * 1987-09-30 1990-07-17 Honda Giken Kogyo Kabushiki Kaisha Engine control device
JPH0544503Y2 (fr) * 1988-07-29 1993-11-11
GB8928052D0 (en) * 1989-12-12 1990-02-14 Lotus Group Plc Control of pressure vibrations in ducts
DE4418959B4 (de) * 1994-05-31 2006-01-12 Sport-Service-Lorinser Sportliche Autoausrüstung GmbH Einstellbarer Schalldämpfer eines Auspuffsystems
JPH10238334A (ja) * 1997-02-21 1998-09-08 Yamaha Motor Co Ltd ４サイクルエンジン
JP4298835B2 (ja) * 1999-01-22 2009-07-22 本田技研工業株式会社 自動二輪車の排気装置
DE19911338A1 (de) * 1999-03-15 2000-09-21 Volkswagen Ag Brennkraftmaschine mit einer Abgasregelvorrichtung
DE19915789A1 (de) * 1999-04-08 2000-10-19 Daimler Chrysler Ag Abgasklappe

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19503322A1 (de) 1995-02-02 1996-08-08 Gillet Heinrich Gmbh Schalldämpfer mit variabler Dämpfungscharakteristik

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1324224C (zh) * 2003-04-29 2007-07-04 海因里希·吉勒特有限责任公司 具有可变声学特性的消音器

Also Published As

Publication number Publication date
EP1215372A3 (fr) 2003-12-17
DE10062472C1 (de) 2002-07-25

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