EP1524425A1 - Steuerungsverfahren für die Regeneration eines Partikelfilters - Google Patents

Steuerungsverfahren für die Regeneration eines Partikelfilters Download PDF

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Publication number
EP1524425A1
EP1524425A1 EP04300673A EP04300673A EP1524425A1 EP 1524425 A1 EP1524425 A1 EP 1524425A1 EP 04300673 A EP04300673 A EP 04300673A EP 04300673 A EP04300673 A EP 04300673A EP 1524425 A1 EP1524425 A1 EP 1524425A1
Authority
EP
European Patent Office
Prior art keywords
regeneration
function
engine
dilution
filter
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
EP04300673A
Other languages
English (en)
French (fr)
Other versions
EP1524425B1 (de
Inventor
Vincent Brochon
Jean-Paul Fouet
Christian Ginoux
Jacques Lafite
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Publication of EP1524425A1 publication Critical patent/EP1524425A1/de
Application granted granted Critical
Publication of EP1524425B1 publication Critical patent/EP1524425B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • 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
    • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
    • F02D41/029—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a particulate filter
    • 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
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/047—Taking into account fuel evaporation or wall wetting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/16—Controlling lubricant pressure or quantity
    • F01M2001/165—Controlling lubricant pressure or quantity according to fuel dilution in oil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/11—Oil dilution, i.e. prevention thereof or special controls according thereto
    • 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
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
    • F02D41/401—Controlling injection timing

Definitions

  • the invention relates to a control method for the regeneration of a particulate filter equipping a power train of a vehicle.
  • the heterogeneity of combustion processes in lean-burn engines, especially in diesel engines, has the effect of generating carbon particles, which can not be burned effectively in the engine. This is explained by example by the appearance, at the exit of the line exhaust, black smoke. This phenomenon is a source of pollution that we seek to reduce.
  • Regeneration devices driven by a calculator allow you to periodically burn particles trapped in the filter and to avoid the clogging of the latter.
  • the soot particles are essentially carbonaceous elements, and their combustion consumes oxygen to form gas carbonic.
  • Triggering the regeneration of the filter is controlled by a calculator that determines if the regeneration must take place and when it is in course, if it can continue. For that, the calculator receives information about the operation of the vehicle. These informations include for example the temperatures of the liquid engine cooling, upstream gases and downstream of the particulate filter, the speed of the vehicle, the mass of soot accumulated in the filter particles and the distance traveled since the last regeneration.
  • the calculator checks conditions on these information and only triggers regeneration if all conditions are satisfied.
  • the regeneration is maintained, although some conditions are no longer satisfied for a period below a predetermined threshold, of the order of one to two minutes. If at least one condition is no longer satisfied for a duration greater than said threshold, then the regeneration process is interrupted.
  • the operating conditions of the engine are modified to increase the temperature of the gases exhaust before they pass through the filter particles. These changes often relate to fuel injection, which can be delayed for at least one cylinder of the engine. These modifications increase fuel consumption and also the amount of fuel that dissolves in the oil the engine, passing through the space between the cylinder and the piston.
  • the invention aims to object a method of controlling a system of motorization comprising a particle filter receiving engine exhaust to restrain the particles of the exhaust gases, the process handling information and controlling the engine to obtain the regeneration of the particulate filter when necessary, characterized in that the method establishes an estimate of the dilution rate of fuel in oil, the process allowing the regeneration if the estimate of the dilution ratio is less than a predetermined dilution threshold.
  • the variation of the dilution ratio is evaluated by a first representative function evaporation, fuel when no regeneration of the particulate filter is in progress, and by a second function when a regeneration Particle filter is in progress.
  • a first representative function evaporation fuel when no regeneration of the particulate filter is in progress
  • a second function when a regeneration Particle filter is in progress.
  • the second function is the sum of the first function and a third function.
  • the variation in the rate of dilution is evaluated according to the speed of rotation of the motor and a variable representing the engine load. Indeed these variables are very influential on the variation of the dilution rate.
  • variable representing the motor load is a flow of injected fuel.
  • the first and the second function are stored as mappings.
  • the functions can be implemented from simple way, after a phase of development of the motorization system.
  • a motorization system implementing the method according to the invention and shown in FIG. 1, comprises a supercharged Diesel engine 1 by a turbocharger 2 and whose gases exhaust are treated by a particulate filter catalytic converter 3.
  • Engine 1 is supplied with air by a air circuit comprising an air intake 11, a compressor 12 of the turbocharger 2, a pipe of discharge 13 and an intake manifold 14 opening into engine combustion chambers 1, with only one chamber 15 being shown.
  • a gas recycling circuit exhaust has a stitching 18 on the tubing exhaust, a selector valve 19 orienting the exhaust gases to the discharge pipe either through a cooler 20, or through a direct driving 21.
  • a calculator 24 receives information on the operation of the motorization system and command the engine 1. It implements in particular the process according to the invention.
  • the calculator 24 determines whether the regeneration must be piloted or not. For that, he establishes whether certain criteria are met. When all criteria are met, a control signal from the regeneration is delivered. The calculator maintains the control signal of the regeneration during a predetermined duration D1 after at least one criterion is no longer satisfied.
  • the calculator takes into account a criterion on the dilution rate Pdil of fuel in the engine oil.
  • the dilution ratio is estimated by the calculator, and if the rate estimate Pdil dilution is greater than a threshold of dilution Sdil predetermined, the criterion is no longer satisfied.
  • step initialization 30 the estimation of the dilution ratio Dpil is initialized to either a null value if the oil is new, ie to a value previously estimated and memorized.
  • step 32 point to a step 32 if no regeneration is in progress, or to a step 33 in the case opposite.
  • step 32 an estimate of variation the dilution ratio dPdil is calculated by the opposite of the product of a function Evapap of evaporation of the fuel and a time step dt.
  • the function Fevap is calculated from a stored map, depending on the speed of rotation N and the flow rate of fuel Qc.
  • step 33 the variation estimate the dilution ratio dPdil is calculated as step 32 with additionally adding the product of a regeneration function Grégé of a time step dt.
  • the Grégé regeneration function is also calculated from a stored map, in depending on the speed of rotation N and the flow rate of fuel Qc.
  • the new dilution ratio Pdil (n) is calculated by adding to the dilution rate at the time step previous Pdil (n-1) rate variation estimate Dilution dilution.
  • step 35 and 36 it is ensured that the rate of dilution will not become negative. Then at the stage 37, the dilution ratio Pdil is compared with the threshold of dilution Sdil predetermined: if it is higher, the criterion is not satisfied and regeneration is prohibited (step 38). Otherwise, a regeneration is allowed (step 39).
  • step 40 the flow of the step is awaited. time before proceeding to a new step of calculation, resuming at step 31.
  • the invention is not limited to the mode of realization which has just been described only in as an example. We can use other variables representative of the engine load, such as airflow or air pressure intake.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Networks Using Active Elements (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Filtration Of Liquid (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
EP04300673A 2003-10-13 2004-10-11 Steuerungsverfahren für die Regeneration eines Partikelfilters Expired - Lifetime EP1524425B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0311926 2003-10-13
FR0311926A FR2860830B1 (fr) 2003-10-13 2003-10-13 Procede de commande pour la regeneration d'un filtre a particules

Publications (2)

Publication Number Publication Date
EP1524425A1 true EP1524425A1 (de) 2005-04-20
EP1524425B1 EP1524425B1 (de) 2006-05-17

Family

ID=34355418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04300673A Expired - Lifetime EP1524425B1 (de) 2003-10-13 2004-10-11 Steuerungsverfahren für die Regeneration eines Partikelfilters

Country Status (5)

Country Link
EP (1) EP1524425B1 (de)
AT (1) ATE326624T1 (de)
DE (1) DE602004000902T2 (de)
ES (1) ES2259436T3 (de)
FR (1) FR2860830B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1722087A2 (de) 2005-05-13 2006-11-15 HONDA MOTOR CO., Ltd. Abgasreinigungsanlage für Verbrennungskraftmaschine
FR2890411A1 (fr) * 2005-09-05 2007-03-09 Peugeot Citroen Automobiles Sa Systeme de determination du taux de dilution de l'huile de lubrification d'un moteur thermique de vehicule automobile par du carburant d'alimentation de celui-ci
EP1798404A1 (de) * 2005-12-14 2007-06-20 Nissan Motor Co., Ltd. Nacheinspritzungsteuerung einer Brennkraftmaschine
WO2008056231A2 (en) * 2006-11-09 2008-05-15 Toyota Jidosha Kabushiki Kaisha Vehicle diesel engine and control method of the same
FR2933735A1 (fr) * 2008-07-08 2010-01-15 Peugeot Citroen Automobiles Sa Procede et dispositif de commande des regenerations d'un systeme de post-traitement des gaz d'echappement d'un moteur a combustion
FR3040738A1 (fr) * 2015-09-07 2017-03-10 Peugeot Citroen Automobiles Sa Procede de controle d’une dilution d’un carburant dans une huile de lubrification d’un moteur thermique de vehicule automobile

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007031355A1 (de) * 2007-07-05 2009-01-08 Ford Global Technologies, LLC, Dearborn Verfahren und Vorrichtung zur Steuerung von Regenerationsvorgängen in einer Abgasnachbehandlungsvorrichtung
DE102007034822A1 (de) * 2007-07-26 2009-01-29 Ford Global Technologies, LLC, Dearborn Verbessertes Verfahren zur Steuerung der Regeneration eines Schadstoffkatalysators oder Partikelfilters
FR2941909B1 (fr) * 2009-02-10 2011-02-18 Renault Sas Procede et dispositif de controle d'un systeme de motorisation pour vehicule automobile
FR2974853B1 (fr) 2011-05-06 2015-05-01 Renault Sa Procede d'estimation de la dilution du carburant dans l'huile d'un moteur a combustion interne

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1281852A2 (de) * 2001-08-03 2003-02-05 C.R.F. Società Consortile per Azioni Methode zur Einleitung der Regeneration für einen Partikelfilter in einem mit Direkteinspritzung versehenen Dieselmotor mit einem Common-Rail Einspritzungsystem
EP1308617A1 (de) * 2001-11-05 2003-05-07 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Verfahren und Steuereinrichtung einer Dieselbrennkraftmaschine
US20030168039A1 (en) * 2001-12-04 2003-09-11 Oliver Ebelsheiser Method for operating an internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1281852A2 (de) * 2001-08-03 2003-02-05 C.R.F. Società Consortile per Azioni Methode zur Einleitung der Regeneration für einen Partikelfilter in einem mit Direkteinspritzung versehenen Dieselmotor mit einem Common-Rail Einspritzungsystem
EP1308617A1 (de) * 2001-11-05 2003-05-07 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Verfahren und Steuereinrichtung einer Dieselbrennkraftmaschine
US20030168039A1 (en) * 2001-12-04 2003-09-11 Oliver Ebelsheiser Method for operating an internal combustion engine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1722087A2 (de) 2005-05-13 2006-11-15 HONDA MOTOR CO., Ltd. Abgasreinigungsanlage für Verbrennungskraftmaschine
EP1722087A3 (de) * 2005-05-13 2008-08-13 HONDA MOTOR CO., Ltd. Abgasreinigungsanlage für Verbrennungskraftmaschine
US7611567B2 (en) 2005-05-13 2009-11-03 Honda Motor Co., Ltd. Exhaust gas purifying apparatus for internal combustion engine
FR2890411A1 (fr) * 2005-09-05 2007-03-09 Peugeot Citroen Automobiles Sa Systeme de determination du taux de dilution de l'huile de lubrification d'un moteur thermique de vehicule automobile par du carburant d'alimentation de celui-ci
WO2007028919A1 (fr) * 2005-09-05 2007-03-15 Peugeot Citroen Automobiles Sa Systeme de determination du taux de dilution de l'huile de lubrification d'un moteur thermique de vehicule automobile par du carburant d'alimentation de celui-ci
EP1798404A1 (de) * 2005-12-14 2007-06-20 Nissan Motor Co., Ltd. Nacheinspritzungsteuerung einer Brennkraftmaschine
US7779622B2 (en) 2005-12-14 2010-08-24 Nissan Motor Co., Ltd. Post injection control of internal combustion engine
WO2008056231A2 (en) * 2006-11-09 2008-05-15 Toyota Jidosha Kabushiki Kaisha Vehicle diesel engine and control method of the same
WO2008056231A3 (en) * 2006-11-09 2008-07-03 Toyota Motor Co Ltd Vehicle diesel engine and control method of the same
US8087233B2 (en) 2006-11-09 2012-01-03 Toyota Jidosha Kabushiki Kaisha Vehicle diesel engine and control method of the same
FR2933735A1 (fr) * 2008-07-08 2010-01-15 Peugeot Citroen Automobiles Sa Procede et dispositif de commande des regenerations d'un systeme de post-traitement des gaz d'echappement d'un moteur a combustion
FR3040738A1 (fr) * 2015-09-07 2017-03-10 Peugeot Citroen Automobiles Sa Procede de controle d’une dilution d’un carburant dans une huile de lubrification d’un moteur thermique de vehicule automobile

Also Published As

Publication number Publication date
ATE326624T1 (de) 2006-06-15
EP1524425B1 (de) 2006-05-17
ES2259436T3 (es) 2006-10-01
FR2860830A1 (fr) 2005-04-15
FR2860830B1 (fr) 2006-01-13
DE602004000902D1 (de) 2006-06-22
DE602004000902T2 (de) 2007-04-26

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