EP2004963B1 - Abgasanlage für brennkraftmaschinen - Google Patents

Abgasanlage für brennkraftmaschinen Download PDF

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Publication number
EP2004963B1
EP2004963B1 EP07726345A EP07726345A EP2004963B1 EP 2004963 B1 EP2004963 B1 EP 2004963B1 EP 07726345 A EP07726345 A EP 07726345A EP 07726345 A EP07726345 A EP 07726345A EP 2004963 B1 EP2004963 B1 EP 2004963B1
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EP
European Patent Office
Prior art keywords
plant
exhaust gas
exhaust
deviating
vehicle
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EP07726345A
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English (en)
French (fr)
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EP2004963A1 (de
Inventor
Giorgio Girondi
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UFI Filters SpA
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    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating 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
    • 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
    • F01N3/031—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 having means for by-passing filters, e.g. when clogged or during cold engine start
    • 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
    • F01N3/033—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 in combination with other devices
    • F01N3/035—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 in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • 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
    • F01N2410/00—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/70—Input parameters for engine control said parameters being related to the vehicle exterior
    • F02D2200/701—Information about vehicle position, e.g. from navigation system or GPS signal

Definitions

  • the invention relates to an exhaust gas plant for internal combustion engines, typically for diesel engines.
  • the invention relates to an exhaust gas plant comprising at least an anti-particulate filter; the plant traps the particulate matter that passes through conventional gas treatment devices located upstream of the filter.
  • particulate matter i.e. a mixture of powders and non-combusted sooty particles, metal oxides and the like, which remain suspended in the air.
  • passive-type anti-particulate filters have been developed and realised, and are available both as standard equipment and as accessories. These are installed in the terminal tract of the exhaust line, and are designed to trap the particulate and prevent its subsequent release into the atmosphere. Generally these anti-particulate filters are rather delicate and can be damaged when crossed by exhaust gases and/or gas pressures that are above predetermined critical levels.
  • exhaust plants that are equipped with a passive anti-particulate filter usually comprise an auxiliary branch which bypasses the filter proper, as well as means for deviating the exhaust gas flow internally of the auxiliary branch when the temperature and/or the pressure of the gases upstream of the means for deviating exceed these predetermined critical limit levels.
  • passive anti-particulate filters cannot be regenerated on board the vehicle, but have to be dismounted each time they become clogged up, and replaced.
  • a particularly relevant drawback of the known filters is that they clog up rather rapidly, requiring frequent maintenance operations and resulting in long inactive periods for the vehicles they are fitted on.
  • DE 41 17 676 A1 discloses an antiparticulate filter that is deviated depending on the status of the filter and the exhaust temperature.
  • WO 01/25606 discloses a control device that decides on regeneration of a catalytic strorage converter depending on route information using a GPS system.
  • the catalytic converter is only regenerated when the vehicle is outside an environmental zone where emission restrictions apply.
  • GB 2 390 438 A describes a vehicle control and warning system that informs the driver of the emission restrictions in the area the vehicle drives.
  • a GPS system is used to locate the vehicles position. The driver is also informed on whether the vehicle has breached emission restrictions.
  • the aim of the present invention is to provide an exhaust gas plant for internal combustion engines which enables selective use of the anti-particulate filter only when needed, effectively increasing the working life thereof and thus obviating the above-described drawback in the prior art.
  • a further aim of the invention is to attain the above-mentioned aim with a simple, rational and economical solution.
  • an exhaust gas plant for internal combustion engines which comprises an exhaust evacuation line for the exhaust gases, an anti-particulate filter intercepting the exhaust evacuation line, an auxiliary branch connected to the evacuation line for by-passing the anti-particulate filter, and means for selectively deviating the exhaust gas into the auxiliary branch.
  • the exhaust gas plant comprises a control system which controls the means for deviating according to the geographical location of the vehicle to which the exhaust gas plant is associated.
  • control system commands the means for deviating in such a way that the flow of the exhaust gas is made to pass exclusively into the anti-particulate filter during urban driving, where the particulate is at its most harmful; while the exhaust gas is made to pass exclusively into the auxiliary by-pass branch during non-urban driving.
  • control system comprises a remote device, external and independent of the vehicle, which is destined to interact with an on-board device located on the vehicle itself for detecting the geographical location thereof, for example a technology of the "telepass", citypass” or satellite navigation type, or the like.
  • control system can simply comprise a control device of the means for deviating, which is manually activatable by the driver.
  • the exhaust gas plant 6 of the present invention comprises a usual exhaust evacuation line 7 for guiding the exhaust gas issuing from an internal combustion engine 8, typically a diesel engine, towards the outside environment.
  • an internal combustion engine 8 typically a diesel engine
  • the exhaust evacuation line 7 is generally intercepted by a plurality of devices for treatment of the exhaust gas, in particular by a catalytic converter 9 and a silencer 10, both of which are crossed in series by the flow of the exhaust gas.
  • the silencer 10 is located downstream of the catalytic converter 9, with respect to the outflow direction of the exhaust gas.
  • the exhaust evacuation line 7 further comprises a three-way exhaust diverter manifold 60, provided with an inlet duct 61 for the exhaust gas, from which a first outlet terminal 62 and a second outlet terminal 63 branch off.
  • the diverter manifold 60 is located in the terminal tract of the exhaust evacuation line 7, downstream of the catalytic converter 9 and the silencer 10, with respect to the outflow direction of the exhaust gas, or is integrated with the silencer 10 itself.
  • the first terminal 62 of the manifold 60 is intercepted by a passive filter 1, which filters the exhaust gas and retains the particulate allowed to pass through the upstream devices, and in particular particulate rated less than PM10, i.e. classifiable as fine particles.
  • the second terminal 63 is substantially an auxiliary branch which by-passes the passive filter 1, preventing the exhaust gases from flowing there-through.
  • the second terminal 63 terminates directly in the atmosphere, i.e. reaches the outside without being intercepted by any other exhaust gas treatment device.
  • the exhaust manifold 60 comprises diverter means for selectively deviating the exhaust gas towards the first terminal 62 or the second terminal 63.
  • the diverter means comprise a diverter valve afforded directly internally of the body of the exhaust manifold 60.
  • the diverter valve is essentially constituted by a butterfly obturator 64 pivoted to the inside of the manifold 60, to which it is mechanically connected by actuator means of known type, for example an electric motor which selectively moves the butterfly obturator 64 between a first and a second work position.
  • the butterfly obturator 64 In the first work position the butterfly obturator 64 completely closes the second terminal 63 and opens the first terminal 62 (see figure 2 ), so that the exhaust gas crosses only the antiparticulate filter 1; while in the second work position the obturator 64 opens the second terminal 63 and completely closes the first terminal 62 (see figure 3 ), sending the entire exhaust gas flow into the atmosphere.
  • the displacements of the butterfly obturator 64 are controlled by a special control system (not illustrated) which detects the geographical location of the vehicle on which the exhaust gas plant 6 is installed, and consequently commands the means for actuating the diverter valve.
  • control system is configured in such a way as to arrange the butterfly obturator 64 in the first work position when the vehicle is in an urban zone, and to arrange the obturator 64 in the second work position when the vehicle is outside an urban zone.
  • control system of the diverter valve comprises a remote device, external and independent of the vehicle, which interacts by means of radio signals or other electronic signals with an on-board device located on the vehicle itself, to reveal the geographical location of the vehicle.
  • the remote device emits the above-mentioned signals, which are captured and received by the on-board device.
  • the remote device can be associated to a fixed station, located for example along a main arterial road for entrance to or exit from a densely-populated centre; the device could be recognisable by a "telepass” or "citypass” type system on-board a vehicle passing by the fixed station.
  • the remote device and the on-board device could be part of a satellite localisation device of the vehicle, which satellite localisation device might include a map of the area the vehicle is travelling in; the device could be of the type known as "sat-nav" appliances.
  • control system of the diverter valve comprises a manual command organ, for example a button located internally of the cabin of the vehicle, which is manually activatable by the driver.
  • the vehicle driver can manually commute the diverter valve into the position in which the exhaust gases are forced to pass through the filter 1; while on exiting the urban centre, the driver can commute the valve into the position in which the exhaust gases pass through the auxiliary branch 63, directly towards the atmosphere.
  • the diverter valve control system is completed by special sensors (not illustrated) which are designed to detect the pressure and/or the temperature of the exhaust gases upstream of the manifold 60.
  • control system causes the butterfly obturator 64 to move into the second work position, i.e. into the position in which it prevents passage of the exhaust gases into the filter 1, whenever the temperature and/or the pressure of the exhaust gas is above a predetermined threshold limit; this is independent of the geographical position of the vehicle.
  • the threshold limit values include a safety limit, in the sense that they prevent the antiparticulate filter 1 from being subject to internal pressures and/or temperatures which are too high and which might lead to damage to the filter 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Claims (12)

  1. Ein Fahrzeug mit einer Abgasanlage für interne Verbrennungsmotoren, wobei die Abgasanlage eine Abgasabsaugleitung (7) für die Abgase beinhaltet, ferner einen Partikelfilter (1), der so positioniert ist, dass er die Abgasabsaugleitung (7) unterbricht, einen Nebenzweig (63), der an die Abgasabsaugleitung (7) angeschlossen ist, um den Partikelfilter (1) zu umgehen, und Umleitmittel (64) zur selektiven Umleitung der Abgase in den Nebenzweig (63), dadurch gekennzeichnet, dass ferner ein Kontrollsystem enthalten ist, das die Umleitmittel (64) des Partikelfilters (1) in Übereinstimmung mit dem geographischen Standort des Fahrzeugs, dem die Abgasanlage zugeordnet ist, steuert.
  2. Die Anlage nach Patentanspruch 1, dadurch gekennzeichnet, dass das Kontrollsystem eine außerhalb des Fahrzeugs liegende und von diesem unabhängige Fernvorrichtung beinhaltet, die mit einer Bordvorrichtung im Fahrzeug zusammenwirkt und so dessen geographischen Standort ermittelt.
  3. Die Anlage nach Patentanspruch 2, dadurch gekennzeichnet, dass die Fernvorrichtung einer festen Station zugeordnet ist und ein Vorbeifahren des Fahrzeugs in Nähe der festen Station erkennen kann.
  4. Die Anlage nach Patentanspruch 2, dadurch gekennzeichnet, dass die Fernvorrichtung und die Bordvorrichtung Teil eines Satellitensystems zur geographischen Standortbestimmung sind.
  5. Die Anlage nach Patentanspruch 2, dadurch gekennzeichnet, dass die Fernvorrichtung Signale aussendet, die von der Bordvorrichtung empfangen werden.
  6. Die Anlage nach Patentanspruch 2, dadurch gekennzeichnet, dass die Fernvorrichtung und die Bordvorrichtung über elektronische Signale in Verbindung stehen.
  7. Die Anlage nach Patentanspruch 2, dadurch gekennzeichnet, dass die Fernvorrichtung und die Bordvorrichtung über Funksignale in Verbindung stehen.
  8. Die Anlage nach Patentanspruch 1, dadurch gekennzeichnet, dass das Kontrollsystem eine von Hand betätigbare Vorrichtung zur Steuerung der Umleitmittel (64) beinhaltet.
  9. Die Anlage nach Patentanspruch 1, dadurch gekennzeichnet, dass das Kontrollsystem der Umleitmittel (64) so gestaltet ist, dass die Umleitmittel (64) einen Durchgang der Abgase ausschließlich durch den Partikelfilter (1) zulassen, wenn das Fahrzeug in städtischen Gebieten fährt, und einen Durchgang der Abgase ausschließlich durch den Nebenzweig (63), wenn das Fahrzeug außerhalb städtischer Gebiete fährt.
  10. Die Anlage nach Patentanspruch 1, dadurch gekennzeichnet, dass dem Partikelfilter (1) vorgelagerte Mittel zur Erkennung von Druck und/oder Temperatur der Abgase enthalten sind und dass diese Erkennungsmittel mit dem Kontrollsystem verbunden sind, so dass das Kontrollsystem die Umleitmittel (64) so steuern kann, dass ein Durchgang der Abgase durch den Partikelfilter (1) verhindert wird, wenn ein Grenzwert in Druck und/oder Temperatur der Abgase überschritten wird.
  11. Die Anlage nach Patentanspruch 1, dadurch gekennzeichnet, dass die Umleitmittel (64) wenigstens ein Umleitventil beinhalten, das sich an einem Teil der Abgasabsaugleitung (7) befindet, von dem der Nebenzweig (63) abgeht.
  12. Die Anlage nach Patentanspruch 11, dadurch gekennzeichnet, dass das Umleitventil eine Schließvorrichtung (64) beinhaltet, wobei die Schließvorrichtung (64) in einer ersten Betriebsposition den Nebenzweig (63) schließt und in einer zweiten Betriebsposition einen zum Partikelfilter (1) führenden Teil (62) der Abgasabsaugleitung (7) schließt.
EP07726345A 2006-04-07 2007-02-12 Abgasanlage für brennkraftmaschinen Active EP2004963B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000047A ITRE20060047A1 (it) 2006-04-07 2006-04-07 Impianto di scappamento per i gas di scarico di motori a combustione interna
PCT/EP2007/051323 WO2007115850A1 (en) 2006-04-07 2007-02-12 An exhaust gas plant for internal combustion engines

Publications (2)

Publication Number Publication Date
EP2004963A1 EP2004963A1 (de) 2008-12-24
EP2004963B1 true EP2004963B1 (de) 2009-10-28

Family

ID=37433653

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07726345A Active EP2004963B1 (de) 2006-04-07 2007-02-12 Abgasanlage für brennkraftmaschinen

Country Status (5)

Country Link
EP (1) EP2004963B1 (de)
AT (1) ATE447096T1 (de)
DE (1) DE602007003001D1 (de)
IT (1) ITRE20060047A1 (de)
WO (1) WO2007115850A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900000355U1 (it) * 2019-01-31 2020-07-31 Motori Minarelli S P A Apparato di scarico dei prodotti di combustione di un motore endotermico a due tempi

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0441914A (ja) * 1990-06-01 1992-02-12 Nissan Motor Co Ltd 内燃機関の排気処理装置
EP1222377B1 (de) * 1999-10-06 2003-08-13 Robert Bosch Gmbh Steuergerät zur reinigung eines speicherkatalysators eines kraftfahrzeugs
GB2390438A (en) * 2002-07-01 2004-01-07 London Taxis Internat Ltd Vehicle control and warning system.
DE20302143U1 (de) * 2003-02-10 2003-04-17 Bollmann, Stefan, Dipl.-Ing., 66497 Contwig Fahrerwarn- und Informationssystem
DE10341090A1 (de) * 2003-09-05 2005-04-07 Siemens Ag Kontrolleinrichtung und Kontrollverfahren für einen Antrieb eines Kraftfahrzeugs
FR2863657B1 (fr) * 2003-12-16 2007-08-03 Renault Sas Methode et dispositif de traitement des gaz d'echappement

Also Published As

Publication number Publication date
ITRE20060047A1 (it) 2007-10-08
ATE447096T1 (de) 2009-11-15
DE602007003001D1 (de) 2009-12-10
WO2007115850A1 (en) 2007-10-18
EP2004963A1 (de) 2008-12-24

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