EP1524425A1 - Steuerungsverfahren für die Regeneration eines Partikelfilters - Google Patents
Steuerungsverfahren für die Regeneration eines Partikelfilters Download PDFInfo
- 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
Links
- 230000008929 regeneration Effects 0.000 title claims abstract description 34
- 238000011069 regeneration method Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000002245 particle Substances 0.000 title claims abstract description 16
- 238000010790 dilution Methods 0.000 claims abstract description 32
- 239000012895 dilution Substances 0.000 claims abstract description 32
- 239000000446 fuel Substances 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 7
- 238000001704 evaporation Methods 0.000 claims abstract description 4
- 230000008020 evaporation Effects 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 4
- 239000004071 soot Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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)
- Filtering Of Dispersed Particles In Gases (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Filtration Of Liquid (AREA)
- Networks Using Active Elements (AREA)
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 Active 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)
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)
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)
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 |
-
2003
- 2003-10-13 FR FR0311926A patent/FR2860830B1/fr not_active Expired - Fee Related
-
2004
- 2004-10-11 DE DE602004000902T patent/DE602004000902T2/de active Active
- 2004-10-11 AT AT04300673T patent/ATE326624T1/de not_active IP Right Cessation
- 2004-10-11 EP EP04300673A patent/EP1524425B1/de active Active
- 2004-10-11 ES ES04300673T patent/ES2259436T3/es active Active
Patent Citations (3)
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)
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 |
---|---|
EP1524425B1 (de) | 2006-05-17 |
ATE326624T1 (de) | 2006-06-15 |
DE602004000902D1 (de) | 2006-06-22 |
ES2259436T3 (es) | 2006-10-01 |
DE602004000902T2 (de) | 2007-04-26 |
FR2860830B1 (fr) | 2006-01-13 |
FR2860830A1 (fr) | 2005-04-15 |
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