EP0512246B1 - Dispositif de commande d'une soupape de dérivation - Google Patents

Dispositif de commande d'une soupape de dérivation Download PDF

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Publication number
EP0512246B1
EP0512246B1 EP92105524A EP92105524A EP0512246B1 EP 0512246 B1 EP0512246 B1 EP 0512246B1 EP 92105524 A EP92105524 A EP 92105524A EP 92105524 A EP92105524 A EP 92105524A EP 0512246 B1 EP0512246 B1 EP 0512246B1
Authority
EP
European Patent Office
Prior art keywords
particulate filter
diesel particulate
bypass
control device
open position
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
EP92105524A
Other languages
German (de)
English (en)
Other versions
EP0512246A1 (fr
Inventor
Klaus-Peter Dipl.-Ing. Ahmann
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
Mercedes Benz AG
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 Daimler Benz AG, Mercedes Benz AG filed Critical Daimler Benz AG
Publication of EP0512246A1 publication Critical patent/EP0512246A1/fr
Application granted granted Critical
Publication of EP0512246B1 publication Critical patent/EP0512246B1/fr
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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/0235—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using exhaust gas throttling means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/06—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for braking
    • 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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • 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
    • F02D9/06—Exhaust brakes
    • 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/14—Exhaust treating devices having provisions not otherwise provided for for modifying or adapting flow area or back-pressure
    • 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
    • F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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 a device for controlling a bypass valve according to the preamble of claim 1.
  • a diesel engine with a bypass channel between a combustion chamber and the exhaust system is known, the bypass channel being able to be opened and closed by a solenoid valve and being controlled as a function of operating parameters.
  • This bypass channel which is formed by a through-hole between the prechamber and the exhaust manifold, allows the ignited fuel-air mixture to flow directly at high speed into a soot filter arranged in the exhaust manifold after opening the solenoid valve and thus ignites the soot particles accumulated in the soot filter.
  • the device described can only be used to ignite a soot filter which is located directly in the direct range of action of the flame emerging from the bypass duct, that is to say directly in the exhaust manifold. It is also disadvantageous that the operation of the device requires a complex solenoid valve which is to be briefly controlled exactly at the clock frequency of the engine at the moment of injection, and a device for correspondingly controlling the solenoid valve.
  • DE-PS 34 28 626 for diesel engines that have a throttle valve in the exhaust line as an engine braking device, to further increase the engine braking power to arrange additional bypass lines between the combustion chamber and the exhaust line, which can be opened and closed by means of a constant throttle valve.
  • the invention has for its object to further develop the control device known from US Pat. No. 4,380,149 for bypass valves arranged in the cylinder head of an internal combustion engine in addition to the gas exchange valves such that the control device on the one hand facilitates the initiation of regeneration of the soot filter for the driver and on the other hand the control device can also be used for engine braking without significant additional effort.
  • the device By using sensors to detect the state on the soot filter and a control device, the operating states suitable for regeneration of the soot filter are displayed to the driver, which is why the control device is easier to operate.
  • the device is now set via the control unit such that it can also be used for engine braking, which is why its function has been doubled, so that a special engine braking device with bypass valves can be dispensed with.
  • the throttle valve 8 If the throttle valve 8 is closed, an increased engine braking power is achieved due to the increasing exhaust gas back pressure, the throttle valve 8 only when the diesel engine is in push operation, i.e. can be closed by the driver when the accelerator pedal 15 is in the zero position.
  • the bypass valve 10 can also be opened by means of a control command which can also be triggered manually via a switch 16 on the control device 13, as a result of which the exhaust gas counterpressure upstream of the throttle valve 8 and thus the engine braking power further increases significantly.
  • the control unit 13 prevents the bypass valve 10 from opening in push mode with the throttle valve 8 open.
  • this state is communicated to the driver by means of a signal lamp 17, which is now manually operated by actuating the Switch 16 can open the bypass valve 10 via the control unit 13.
  • the driver can initiate the ignition immediately or delay it until a situation favorable to the combustion of the soot particles, for example outside of inhabited areas, exists. It is equally possible to make the ignition dependent on reaching or exceeding a predetermined vehicle speed which is impermissible within built-up areas in order to largely rule out that the start of the regeneration takes place in inhabited areas.
  • the switching position with open bypass valve 10 and open throttle valve 8 leads to compliance with the above Parameters for igniting the soot combustion filter 7 by the fuel / air mixture which is at least partially inflamed in the combustion chamber 3 of the cylinder head 2, that from the combustion chamber 3 through the open bypass valve 10 and through the gas channel 9 into the exhaust line 6 and further into the soot combustion filter 7 flows, leads to a temperature exceeding the ignition temperature of the soot particles.
  • the bypass valve 10 remains open over several work cycles until the soot burning filter 7 is ignited with certainty. If the parameters required for an ignition are not complied with, the control unit 13 blocks the ignition to be initiated manually via the switch 16 by not opening the bypass valve 9.
  • the device according to the invention is preferably installed and switched such that a gas channel 9 with a bypass valve 10 is installed on each cylinder of a multi-cylinder diesel engine for an optimal increase in engine braking power, but possibly only a part of the total number of gas channels 9 for initiating the regeneration of the Soot burn filter 7 is released.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Claims (3)

  1. Dispositif de commande pour des soupapes de dérivation (10), qui sont disposées dans la culasse (2) d'un moteur à combustion interne à plusieurs cylindres à compression d'air, pour l'entraînement d'un véhicule, et qui sont insérés, en plus des soupapes (4) de changement des gaz, dans un gaz (9) de circulation des gaz pour relier chaque cylindre (1) à un tuyau d'échappement (6), dans lequel est monté un filtre à suie (7), et dans lequel les soupapes de dérivation (10) peuvent être commandées, en totalité ou en partie, de manière à être placées dans une position ouverte, dans le cas d'un état de fonctionnement approprié pour une régénération du filtre à suie (7), caractérisé en ce que sur le moteur à combustion interne et dans le tuyau d'échappement (6) sont prévus, en amont du filtre à suie (7), des capteurs (14) servant à identifier l'état du filtre à suie (7) et qui sont reliés à un appareil de commande (13) qui, lorsqu'un état de fonctionnement convenant pour la régénération du filtre à suie (7) est atteint, produit un signal (17), et qu'il est prévu un interrupteur (16), à partir duquel les soupapes de dérivation (10) sont commandées en étant placées dans la position ouverte, après la présence du signal (17) ou indépendamment de cela, alors que la pédale d'accélérateur (15) prévue pour le réglage de la charge du moteur à combustion interne n'est pas à l'état actionné.
  2. Dispositif selon la revendication 1, caractérisé en ce qu'un papillon d'étranglement (8) est disposé dans le tuyau d'échappement (6) et que, lorsque le papillon d'étranglement (8) est fermé, les soupapes de dérivation (10) sont commandées de manière à être placées dans leur position ouverte.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce qu'une commande manuelle de la soupape de dérivation (10), amenant cette dernière dans une position ouverte, est bloquée par l'appareil de commande (13), dans le cas où les paramètres requis ne sont pas respectés.
EP92105524A 1991-05-07 1992-03-31 Dispositif de commande d'une soupape de dérivation Expired - Lifetime EP0512246B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4114829 1991-05-07
DE4114829A DE4114829A1 (de) 1991-05-07 1991-05-07 Vorrichtung zur steuerung eines bypassventiles

Publications (2)

Publication Number Publication Date
EP0512246A1 EP0512246A1 (fr) 1992-11-11
EP0512246B1 true EP0512246B1 (fr) 1995-08-23

Family

ID=6431128

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92105524A Expired - Lifetime EP0512246B1 (fr) 1991-05-07 1992-03-31 Dispositif de commande d'une soupape de dérivation

Country Status (3)

Country Link
US (1) US5218818A (fr)
EP (1) EP0512246B1 (fr)
DE (2) DE4114829A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8956672B2 (en) 2009-03-19 2015-02-17 Nestec S.A. Capsule for preparing coffee in a device comprising a cartridge holder with relief and recessed elements

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5526784A (en) * 1994-08-04 1996-06-18 Caterpillar Inc. Simultaneous exhaust valve opening braking system
US6810850B2 (en) * 2001-04-20 2004-11-02 Jenara Enterprises Ltd. Apparatus and control for variable exhaust brake
US6901751B2 (en) * 2002-02-01 2005-06-07 Cummins, Inc. System for controlling particulate filter temperature
WO2008061886A1 (fr) * 2006-11-22 2008-05-29 Avl List Gmbh Procédé de régénération d'au moins un dispositif de post-traitement de gaz d'échappement
EP1936160B1 (fr) * 2006-12-22 2012-07-11 Volvo Car Corporation Régénération d'un dispositif de traitement des gaz d'échappement empêchant la combustion du carburant dans un cylindre d'un moteur
AT506338A1 (de) * 2008-02-04 2009-08-15 Man Nutzfahrzeuge Oesterreich Verfahren zur regenerierung eines im abgasstrang eines fahrzeug-dieselmotors angeordneten partikelfilters
US7789065B2 (en) * 2008-07-09 2010-09-07 Zhou Yang Engine braking apparatus with mechanical linkage and lash adjustment
US20100037854A1 (en) * 2008-08-18 2010-02-18 Zhou Yang Apparatus and method for engine braking
US20110197572A1 (en) * 2010-02-12 2011-08-18 Liang Fei Industry Co., Ltd. Smart exhaust gas flow control apparatus
US20110203258A1 (en) * 2010-02-25 2011-08-25 International Engine Intellectual Property Company , Llc Exhaust valve actuation system for diesel particulate filter regeneration
KR20210104326A (ko) * 2020-02-17 2021-08-25 현대자동차주식회사 배기 브레이크 작동시의 후분사량 제어 방법

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4121552A (en) * 1974-09-17 1978-10-24 Yamaha Hatsudoki Kabushiki Kaisha Exhaust means for two cycle engines
JPS5833239Y2 (ja) * 1977-06-25 1983-07-25 株式会社ボッシュオートモーティブ システム デイ−ゼルエンジンのスト−ル防止装置
US4380149A (en) * 1981-02-09 1983-04-19 General Motors Corporation Method and means for diesel exhaust particulate emission control
DE3408057A1 (de) * 1984-03-05 1985-06-20 Daimler-Benz Ag, 7000 Stuttgart Verfahren zum zuenden von russabbrennfiltern und dieselmotor mit russabbrennfilter
DE3428626A1 (de) * 1984-08-03 1986-02-13 Daimler-Benz Ag, 7000 Stuttgart Viertakt-brennkraftmaschine
JPH0621543B2 (ja) * 1987-02-16 1994-03-23 日野自動車工業株式会社 排気ガス用フイルタの再生装置
JPH0367013A (ja) * 1989-08-05 1991-03-22 Mazda Motor Corp ディーゼルエンジンの微粒子捕集装置
GB8923615D0 (en) * 1989-10-19 1989-12-06 Dewandre Co Ltd C Exhaust system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8956672B2 (en) 2009-03-19 2015-02-17 Nestec S.A. Capsule for preparing coffee in a device comprising a cartridge holder with relief and recessed elements

Also Published As

Publication number Publication date
DE4114829A1 (de) 1992-11-12
DE4114829C2 (fr) 1993-09-23
US5218818A (en) 1993-06-15
EP0512246A1 (fr) 1992-11-11
DE59203337D1 (de) 1995-09-28

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