FR2897108A1 - Exhaust gas recirculation valve opening control method for internal combustion engine, involves opening recirculation valve according to value representative of nitrogen oxide emission rate, which is measured in exhaust circuit of engine - Google Patents

Exhaust gas recirculation valve opening control method for internal combustion engine, involves opening recirculation valve according to value representative of nitrogen oxide emission rate, which is measured in exhaust circuit of engine Download PDF

Info

Publication number
FR2897108A1
FR2897108A1 FR0600980A FR0600980A FR2897108A1 FR 2897108 A1 FR2897108 A1 FR 2897108A1 FR 0600980 A FR0600980 A FR 0600980A FR 0600980 A FR0600980 A FR 0600980A FR 2897108 A1 FR2897108 A1 FR 2897108A1
Authority
FR
France
Prior art keywords
recirculation valve
emission rate
engine
exhaust
exhaust gas
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.)
Pending
Application number
FR0600980A
Other languages
French (fr)
Inventor
Philippe Lutz
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.)
Valeo Systemes de Controle Moteur SAS
Original Assignee
Valeo Systemes de Controle Moteur 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 Valeo Systemes de Controle Moteur SAS filed Critical Valeo Systemes de Controle Moteur SAS
Priority to FR0600980A priority Critical patent/FR2897108A1/en
Publication of FR2897108A1 publication Critical patent/FR2897108A1/en
Pending legal-status Critical Current

Links

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
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047—Controlling exhaust gas recirculation [EGR]
    • F02D41/005—Controlling exhaust gas recirculation [EGR] according to engine operating conditions
    • F02D41/0052—Feedback control of engine parameters, e.g. for control of air/fuel ratio or intake air amount
    • 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
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047—Controlling exhaust gas recirculation [EGR]
    • F02D41/0077—Control of the EGR valve or actuator, e.g. duty cycle, closed loop control of position
    • 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
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/146—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration
    • 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
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/146—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration
    • F02D41/1461—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration of the exhaust gases emitted by the engine
    • 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
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/146—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration
    • F02D41/1461—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration of the exhaust gases emitted by the engine
    • F02D41/1462—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration of the exhaust gases emitted by the engine with determination means using an estimation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/45—Sensors specially adapted for EGR systems
    • F02M26/48—EGR valve position sensors
    • 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
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
    • F02D2041/1409—Introducing closed-loop corrections characterised by the control or regulation method using at least a proportional, integral or derivative controller
    • 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
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
    • F02D2041/1413—Controller structures or design
    • F02D2041/1418—Several control loops, either as alternatives or simultaneous
    • F02D2041/1419—Several control loops, either as alternatives or simultaneous the control loops being cascaded, i.e. being placed in series or nested
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Abstract

The method involves adjusting an opening of an exhaust gas recirculation valve (10) according to a value representative of nitrogen oxide emission rate, which is measured in an exhaust circuit (4) of an internal combustion engine (1). The exhaust gas recirculation valve is inserted in a bypass (6) extended between the exhaust circuit and intake circuit (2) of the internal combustion engine. An independent claim is also included for a device for implementing an exhaust gas recirculation valve opening control method.

Description

1 L'invention concerne un procédé de gestion de l'ouverture d'une vanne deThe invention relates to a method for managing the opening of a valve of

recirculation de gaz d'échappement (ou vanne RGE) par mesure directe du taux d'émission d'oxydes d'azote (ou NOx).  exhaust gas recirculation (or EGR valve) by direct measurement of the emission rate of nitrogen oxides (or NOx).

ARRIERE-PLAN DE L'INVENTION Une telle vanne RGE est disposée sur une dérivation du circuit d'échappement d'un moteur thermique pour réguler l'admission dans les cylindres du moteur thermique d'une certaine quantité de gaz d'échappement de façon à .faire baisser la température de pointe atteinte lors de la combustion dans les cylindres et ainsi diminuer la production de NOx. On sait que le taux d'émission de NOx est fonction du débit d'air entrant dans le moteur. La relation entre le débit d'air et le taux d'émission de NOx est calibrée lors de la mise au point et cartographiée pour être implantée dans un calculateur. Cette cartographie est utilisée pour réguler l'ouverture de la vanne RGE. A cet effet, le calculateur génère, une consigne de débit d'air à partir d'un taux d'émission de NOx désiré, au moyen de la cartographie. Un débimètre placé sur l'admission fournit au calculateur une mesure du débit d'air réel. Cependant, les cartographies utilisées ne prennent généralement pas en compte certaines dérives dues notam- ment à l'usure et au vieillissement du moteur. Ainsi, pour des conditions de fonctionnement identiques, le dé-bit d'air de consigne risque avec le temps de ne plus correspondre au taux d'émission réel de NOx. OBJET DE L'INVENTION L'invention vise à diminuer les inconvénients liés à l'utilisation d'une corrélation entre le taux d'émission de Nox et une grandeur utilisée pour réguler la vanne RGE. BREVE DESCRIPTION DE L'INVENTION En vue de la réalisation de ce but, on propose un 2 procédé de gestion de l'ouverture d'une vanne de recirculation de gaz d'échappement pour moteur à combustion in-terne insérée dans une dérivation s'étendant entre un circuit d'échappement et un circuit d'admission du mo- teur, comportant l'étape de réguler l'ouverture de la vanne en fonction d'une grandeur représentative d'un taux réel d'émission de NOx, cette grandeur étant, selon l'invention, une mesure du taux d'émission de NOx effectuée dans le circuit d'échappement du moteur.  BACKGROUND OF THE INVENTION Such an EGR valve is disposed on a bypass of the exhaust circuit of a heat engine to regulate the admission into the cylinders of the engine of a certain quantity of exhaust gas so as to to reduce the peak temperature reached during combustion in the cylinders and thus reduce the production of NOx. It is known that the NOx emission rate is a function of the air flow entering the engine. The relationship between airflow and NOx emission rate is calibrated during debugging and mapped to be implemented in a computer. This mapping is used to regulate the opening of the EGR valve. For this purpose, the computer generates, an air flow setpoint from a desired NOx emission rate, by means of mapping. A flow meter placed on the inlet provides the calculator with a measurement of the actual air flow. However, the maps used do not generally take into account certain drifts due in particular to wear and aging of the engine. Thus, for identical operating conditions, the set air debit bit may over time no longer correspond to the actual emission rate of NOx. OBJECT OF THE INVENTION The object of the invention is to reduce the drawbacks associated with the use of a correlation between the NOx emission rate and a quantity used to regulate the EGR valve. BRIEF DESCRIPTION OF THE INVENTION With a view to achieving this object, a method for managing the opening of an exhaust gas recirculation valve for an internal combustion engine inserted in a branch extending between an exhaust circuit and a motor intake circuit, comprising the step of regulating the opening of the valve according to a quantity representative of a real NOx emission rate, this magnitude being, according to the invention, a measurement of the NOx emission rate carried out in the exhaust system of the engine.

La mesure directe du taux d'émission de NOx permet de connaître, quel que soit l'état d'usure du moteur, le taux d'émission réel, ce qui évite le problème de dérive précédemment mentionné. Le débitmètre devient alors inutile pour la régula- tion de la vanne RGE, et peut dès lors être supprimé s'il n'est pas utilisé par une autre fonction du moteur. BREVE DESCRIPTION DES DESSINS L'invention sera mieux comprise à la lumière de la description qui suit en référence aux figures des dessins annexés parmi lesquelles : - la figure 1 est une vue schématique d'un moteur équipé d'une vanne RGE régulée selon l'invention ; - la figure 2 est un schéma-bloc d'un asservisse-ment de la vanne RGE de la figure 1 selon un mode parti- culier de mise en oeuvre de l'invention. DESCRIPTION DETAILLEE DE L'INVENTION En référence à la figure 1, le moteur 1 comporte un répartiteur d'admission 2. L'air admis passe ici un turbocompresseur 3 puis est envoyé dans les chambres de corn- bustion du moteur 1, dans lesquelles du carburant est injecté. Après combustion, les gaz d'échappement sont transférés dans un collecteur d'échappement 4 et, après leur passage par le turbocompresseur 3 pour entraîner la turbine de celui-ci, sont évacués vers l'extérieur au moyen d'une ligne d'échappement 7 comportant des disposi- tifs de dépollution 5. De façon connue en soi, une dérivation 6 s'étend entre le collecteur d'échappement 4 et le répartiteur d'admission 2 pour permettre l'injection dans le répartiteur d'admission 2, et donc, dans les chambres de combustion du moteur 1, d'une quantité calibrée de gaz d'échappement. A cet effet, une vanne de recirculation de gaz d'échappement 10 (appelée ici vanne RGE) est disposée sur la dérivation 6 pour réguler la quantité de gaz -d'échappement transférée dans le répartiteur d'admission 2. La vanne RGE 10 est commandée par un calculateur 50 qui, selon l'invention, utilise le signal d'un capteur de mesure du taux d'émission de NOx 51 pour contrôler l'ou-verture de la vanne RGE. Le capteur de mesure 51 est de préférence installé à l'extrémité de la ligne d'échappement 7 en aval des dispositifs de dépollution 5 ne comportant pas de moyens de réduction des NOx. Cependant, si, comme illustré, les dispositifs de dépollution cornportent des moyens de réduction des Nox 8, il est préférable d'implanter le capteur de mesure 51 en amont de ces moyens de réduction 8. En référence à la figure 2, et conformément à un mode particulier de mise en oeuvre de l'invention, l'as- servissement de la vanne RGE 10 par le calculateur 50 se fait comme suit. L'asservissement met en oeuvre une boucle principale d'asservissement portant sur le taux d'émission de NOx. A cet effet, on retire à une consigne z de taux d'émission désiré de NOx une mesure T,17e, du taux réel d'émission ob- tenue grâce au capteur 51 pour former l'erreur Er =T ùTmes Cette erreur forme l'entrée d'un premier contrôleur 52, par exemple de type PID, qui fournit en sortie une consigne de position O du volet de la vanne RGE 10.  The direct measurement of the NOx emission rate makes it possible to know, regardless of the state of wear of the engine, the actual emission rate, which avoids the problem of drift previously mentioned. The flowmeter becomes useless for regulating the EGR valve, and can be deleted if it is not used by another engine function. BRIEF DESCRIPTION OF THE DRAWINGS The invention will be better understood in the light of the description which follows with reference to the figures of the accompanying drawings in which: FIG. 1 is a schematic view of an engine equipped with a regulated EGR valve according to FIG. invention; FIG. 2 is a block diagram of a servocontrol of the RGE valve of FIG. 1 according to a particular embodiment of the invention. DETAILED DESCRIPTION OF THE INVENTION With reference to FIG. 1, the engine 1 comprises an intake distributor 2. The admitted air here passes a turbocharger 3 and is then sent into the combustion chambers of the engine 1, in which the engine 1 fuel is injected. After combustion, the exhaust gases are transferred into an exhaust manifold 4 and, after passing through the turbocharger 3 to drive the turbine thereof, are discharged to the outside by means of an exhaust line 7 in the manner known per se, a bypass 6 extends between the exhaust manifold 4 and the inlet distributor 2 to allow injection into the intake manifold 2, and therefore, in the combustion chambers of the engine 1, a calibrated quantity of exhaust gas. For this purpose, an exhaust gas recirculation valve 10 (here called EGR valve) is disposed on the bypass 6 to regulate the amount of exhaust gas transferred in the inlet manifold 2. The EGR valve 10 is controlled by a computer 50 which, according to the invention, uses the signal of a measurement sensor NOx emission rate 51 to control the opening of the valve EGR. The measurement sensor 51 is preferably installed at the end of the exhaust line 7 downstream of the depollution devices 5 having no NOx reduction means. However, if, as illustrated, the pollution control devices carry nox reduction means 8, it is preferable to implant the measurement sensor 51 upstream of these reduction means 8. Referring to FIG. 2, and in accordance with FIG. a particular embodiment of the invention, the servicing of the RGE valve 10 by the computer 50 is as follows. The servocontrol implements a main servocontrol loop relating to the NOx emission rate. For this purpose, a measurement T, 17e, of the actual emission rate obtained by means of the sensor 51 is removed at a target z of the desired emission rate of NOx to form the error Er = T ùTmes. input of a first controller 52, for example of the PID type, which outputs a position setpoint O of the flap of the RGE valve 10.

Si la consigne é égale ou dépasse la valeur d'ou- verture maximale du volet de la vanne RGE 10, alors le premier contrôleur 52 est adapté à envoyer un ordre à destination du papillon qui contrôle l'admission d'air dans le moteur pour limiter le débit d'admission d'air.  If the set point equals or exceeds the maximum opening value of the flap of the RGE valve 10, then the first controller 52 is adapted to send an order to the throttle valve which controls the intake of air into the engine for limit the air intake flow.

Ainsi, le rapport volumique entre l'air frais et les gaz d'échappement admis peut de nouveau être contrôlé en jouant non plus sur le débit de gaz d'échappement qui est à son maximum, mais sur le débit d'air admis. La limitation du débit d'air n'a que peu de conséquences sur les --performances du moteur, notamment diesel, l'air étant le plus souvent admis dans le moteur en excès par rapport à des conditions stoechiométriques de combustion. L'asservissement met en oeuvre une boucle interne portant sur la position du volet de la vanne RGE 10. A cet effet, on retire de la consigne de position B une mesure B, es de la position du volet de la vanne RGE 10 pour former l'erreur B =B -9mes . Cette erreur forme l'entrée d'un deuxième contrôleur 53, par exemple de type PID, qui fournit en sortie un courant de commande i d'un moteur d'actionnement du volet de la vanne RGE 10. Ainsi, la boucle principale ne porte plus sur le dé-bit d'air admis dans le moteur, comme dans l'art antérieur, mais sur le taux d'émission de NOx. L'invention n'est pas limitée à ce qui vient d'être décrit, mais bien au contraire englobe toute variante entrant dans le cadre défini par les revendications. En particulier, bien que l'on ait indiqué que le capteur de mesure du taux d'émission de NOx est de préférence installé en extrémité de la ligne d'échappement en aval des dispositifs de dépollution (mais de préférence en amont de moyens de réductions de Nox s'il en existe), on pourra placer le capteur de mesure ailleurs sur le circuit d'échappement, bien que dans ce cas le lien entre le taux réel d'émission de NOx et le taux mesuré soit moins direct.  Thus, the volume ratio between the fresh air and the exhaust gas admitted can again be controlled by no longer playing on the exhaust gas flow rate which is at its maximum, but on the intake air flow. The limitation of the air flow has little effect on the --performances of the engine, especially diesel, the air being most often allowed in the engine in excess of stoichiometric conditions of combustion. The servocontrol uses an internal loop bearing on the position of the flap of the EGR valve 10. To this end, a measurement B, es of the position of the flap of the EGR valve 10 is removed from the position setpoint B to form the error B = B -9mes. This error forms the input of a second controller 53, for example of the PID type, which outputs a control current i of an actuating motor of the shutter of the valve RGE 10. Thus, the main loop carries more on the debit of air admitted into the engine, as in the prior art, but on the NOx emission rate. The invention is not limited to what has just been described, but on the contrary encompasses any variant within the scope defined by the claims. In particular, although it has been indicated that the measurement sensor of the NOx emission rate is preferably installed at the end of the exhaust line downstream of the depollution devices (but preferably upstream of reduction means Nox if available), the measurement sensor can be placed elsewhere on the exhaust system, although in this case the link between the actual NOx emission rate and the measured rate is less direct.

Claims (5)

REVENDICATIONS 1. Procédé de gestion de l'ouverture d'une vanne (10) de recirculation de gaz d'échappement pour moteur à combustion interne insérée dans une dérivation (6) s'étendant entre un circuit d'échappement (4) et un circuit d'admission (2) du moteur, comportant l'étape de réguler l'ouverture de la vanne de recirculation en fonction d'au moins une grandeur représentative d'un taux d'émission d'oxydes d'azote, caractérisé //en ce que la grandeur représentative est une mesure (Tmes) du taux d'émission d'oxydes d'azote effectuée dans le circuit d'échappement du moteur.  A method of managing the opening of an exhaust gas recirculation valve (10) for an internal combustion engine inserted in a branch (6) extending between an exhaust circuit (4) and a circuit intake (2) of the engine, comprising the step of regulating the opening of the recirculation valve as a function of at least one representative quantity of a nitrogen oxide emission rate, characterized // the representative magnitude is a measurement (Tmes) of the nitrogen oxide emission rate made in the engine exhaust system. 2. Procédé selon la revendication 1, dans lequel l'ouverture de la vanne de recirculation est régulée en fonction d'une différence entre un taux désiré d'émission d'oxydes d'azote et la mesure du taux d'émission d'oxydes d'azote.  2. The method of claim 1, wherein the opening of the recirculation valve is controlled according to a difference between a desired rate of emission of nitrogen oxides and the measurement of the oxide emission rate. nitrogen. 3. Procédé selon la revendication 1, dans lequel, lorsque le circuit d'échappement est équipé de moyens de réduction (8) des oxydes d'azote, la mesure du taux d'émission d'oxydes d'azote est effectuée en amont des-dits moyens de réduction (8).  3. Method according to claim 1, wherein, when the exhaust system is equipped with nitrogen oxide reduction means (8), the measurement of the emission rate of nitrogen oxides is carried out upstream of the said reduction means (8). 4. Procédé selon la revendication 1, dans lequel, lorsque le circuit d'échappement est équipé de dispositifs de dépollution (5) autres que des moyens de réduction (8) des oxydes d'azote, la mesure du taux d'émission d'oxydes d'azote est effectuée en aval desdits dispositifs de dépollution (5).  4. The method of claim 1, wherein, when the exhaust system is equipped with pollution control devices (5) other than reduction means (8) of nitrogen oxides, the measurement of the emission rate of oxides of nitrogen is carried out downstream of said depollution devices (5). 5. Dispositif pour mettre en oeuvre le procédé selon l'une des revendications précédentes, comportant un calculateur (50) relié à un capteur de mesure (51) du taux d'émission d'oxydes d'azote.  5. Device for implementing the method according to one of the preceding claims, comprising a computer (50) connected to a measurement sensor (51) of the emission rate of nitrogen oxides.
FR0600980A 2006-02-03 2006-02-03 Exhaust gas recirculation valve opening control method for internal combustion engine, involves opening recirculation valve according to value representative of nitrogen oxide emission rate, which is measured in exhaust circuit of engine Pending FR2897108A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0600980A FR2897108A1 (en) 2006-02-03 2006-02-03 Exhaust gas recirculation valve opening control method for internal combustion engine, involves opening recirculation valve according to value representative of nitrogen oxide emission rate, which is measured in exhaust circuit of engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0600980A FR2897108A1 (en) 2006-02-03 2006-02-03 Exhaust gas recirculation valve opening control method for internal combustion engine, involves opening recirculation valve according to value representative of nitrogen oxide emission rate, which is measured in exhaust circuit of engine

Publications (1)

Publication Number Publication Date
FR2897108A1 true FR2897108A1 (en) 2007-08-10

Family

ID=37031217

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0600980A Pending FR2897108A1 (en) 2006-02-03 2006-02-03 Exhaust gas recirculation valve opening control method for internal combustion engine, involves opening recirculation valve according to value representative of nitrogen oxide emission rate, which is measured in exhaust circuit of engine

Country Status (1)

Country Link
FR (1) FR2897108A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3120005A4 (en) * 2014-03-21 2017-11-15 Westport Power Inc. Method and system for operating gaseous-fuelled direct injection internal combustion engine
CN110439699A (en) * 2018-05-03 2019-11-12 现代自动车株式会社 Reflect the control method of the nitrogen oxides in the engine of operating range

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001152853A (en) * 1999-11-29 2001-06-05 Toyota Motor Corp Control device for pre-mixed combustion compression ignition engine
GB2363210A (en) * 2000-06-09 2001-12-12 Mack Trucks Exhaust gas recirculation apparatus and method
DE10101848A1 (en) * 2001-01-17 2004-02-05 Bayerische Motoren Werke Ag Process for regulating the combustion process in an IC engine, especially a lifting cylinder combustion engine, comprises returning part of the exhaust gas to the combustion chamber for further combustion
EP1398483A2 (en) * 2002-09-03 2004-03-17 Robert Bosch Gmbh Method and apparatus for controlling an intenal combustion engine with reduced emission of polutants
DE10256241A1 (en) * 2002-12-02 2004-06-09 Robert Bosch Gmbh Method and device for controlling an internal combustion engine having exhaust gas recirculation
EP1434049A1 (en) * 2002-12-29 2004-06-30 Volkswagen AG Method of and device for monitoring the NOx signal of an NOx sensor
US20050056265A1 (en) * 2003-09-17 2005-03-17 Center Marc Bryan Control system for NOx control for cam phaser and/or EGR systems
FR2866392A1 (en) * 2004-02-17 2005-08-19 Renault Sas Control apparatus for air supply to combustion chamber of Diesel engine supercharged by turbocompressor, based on regulating values of the richness and concentration of nitrogen oxides in the exhaust

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001152853A (en) * 1999-11-29 2001-06-05 Toyota Motor Corp Control device for pre-mixed combustion compression ignition engine
GB2363210A (en) * 2000-06-09 2001-12-12 Mack Trucks Exhaust gas recirculation apparatus and method
DE10101848A1 (en) * 2001-01-17 2004-02-05 Bayerische Motoren Werke Ag Process for regulating the combustion process in an IC engine, especially a lifting cylinder combustion engine, comprises returning part of the exhaust gas to the combustion chamber for further combustion
EP1398483A2 (en) * 2002-09-03 2004-03-17 Robert Bosch Gmbh Method and apparatus for controlling an intenal combustion engine with reduced emission of polutants
DE10256241A1 (en) * 2002-12-02 2004-06-09 Robert Bosch Gmbh Method and device for controlling an internal combustion engine having exhaust gas recirculation
EP1434049A1 (en) * 2002-12-29 2004-06-30 Volkswagen AG Method of and device for monitoring the NOx signal of an NOx sensor
US20050056265A1 (en) * 2003-09-17 2005-03-17 Center Marc Bryan Control system for NOx control for cam phaser and/or EGR systems
FR2866392A1 (en) * 2004-02-17 2005-08-19 Renault Sas Control apparatus for air supply to combustion chamber of Diesel engine supercharged by turbocompressor, based on regulating values of the richness and concentration of nitrogen oxides in the exhaust

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3120005A4 (en) * 2014-03-21 2017-11-15 Westport Power Inc. Method and system for operating gaseous-fuelled direct injection internal combustion engine
US10167786B2 (en) 2014-03-21 2019-01-01 Westport Power Inc. Method and system for operating gaseous-fuelled direct injection internal combustion engine
CN110700953A (en) * 2014-03-21 2020-01-17 西港能源有限公司 Gas fuel direct injection type internal combustion engine
CN110700953B (en) * 2014-03-21 2022-05-24 西港燃料系统加拿大公司 Gas fuel direct injection type internal combustion engine
CN110439699A (en) * 2018-05-03 2019-11-12 现代自动车株式会社 Reflect the control method of the nitrogen oxides in the engine of operating range
CN110439699B (en) * 2018-05-03 2023-04-07 现代自动车株式会社 Method for controlling nitrogen oxides in engine reflecting driving distance

Similar Documents

Publication Publication Date Title
JP5187123B2 (en) Control device for internal combustion engine
FR2852631A1 (en) Thermal engine controlling method, involves monitoring input variable/internal size of physical model based on deviation between calculated and measured values of physical size of model, to correct input variable/internal size
JP5491028B2 (en) Method for an internal combustion engine with exhaust recirculation
WO2007148007A1 (en) Exhaust gas recirculation system for a combustion engine of the supercharged diesel type and method for controlling such an engine
EP2156036A1 (en) System for regulating the supercharging pressure of an internal combustion engine having two staged turbochargers
WO2011052066A1 (en) Control system for internal combustion engine
US20120203446A1 (en) Control apparatus for internal combustion engine
FR2897108A1 (en) Exhaust gas recirculation valve opening control method for internal combustion engine, involves opening recirculation valve according to value representative of nitrogen oxide emission rate, which is measured in exhaust circuit of engine
FR2938301A1 (en) Exhaust gas recirculation regulating method for internal combustion engine i.e. oil engine, of internal combustion engine assembly, involves regulating recirculation of gas such that minimal flow rate is lower than set flow rate
FR2923544A1 (en) Supercharged diesel internal combustion engine for motor vehicle, has control unit with calculating unit that calculates setpoint position values of valve and flaps from setpoint values of air flow and gas rates in engine
EP1650420B1 (en) System and method for regulation of the particulate filter regeneration of an internal combustion engine
FR2872220A1 (en) Internal combustion engine e.g. gasoline engine, controlling process for motor vehicle, involves controlling recirculated exhaust gas flow based on end casing pressure, turbine upstream pressure or temperature of gas in upstream of turbine
EP1106804B1 (en) Control method for a motor vehicle drive unit to increase the richness of the exhaust gas during regeneration of a nitrogen oxide trap
EP1293658A1 (en) Method and system for controlling the air flow in an intake manifold of an internal combustion engine of a vehicle
FR2911918A1 (en) Variable geometry type turbocharger controlling system for oil engine of motor vehicle, has control unit including control loops controlling displacement and angular position of blades based on operation point of engine, respectively
EP3816427B1 (en) Method for diagnosing a gas leak from a low-pressure exhaust gas partial recirculation circuit of an internal combustion engine
WO2006070146A1 (en) Method and device for controlling a richness 1 diesel engine
FR2911635A1 (en) Heat engine e.g. supercharged oil engine, for motor vehicle, has low and high pressure recirculation circuits with recovering units to recover gas, and injection units to inject gas in upstream and downstream of compressor, respectively
WO2013164548A2 (en) Method for treating exhaust gases of a supercharged engine comprising exhaust-gas recirculation
FR2935026A1 (en) Low pressure exhaust gas recirculation system for e.g. diesel engine, of motor vehicle, has controlling unit controlling recirculation of exhaust gas in recirculation duct and comprising on-off flap arranged on duct
FR2866392A1 (en) Control apparatus for air supply to combustion chamber of Diesel engine supercharged by turbocompressor, based on regulating values of the richness and concentration of nitrogen oxides in the exhaust
FR2858020A1 (en) Internal combustion engine controlling process for vehicle, involves regulating airflow in exchanger and bypass, such that temperature of air in collector approaches predetermined value
FR2909719A1 (en) Internal combustion engine e.g. oil engine, for motor vehicle, has regulation unit for regulating temperature of recycled gas by proportional action on valves based on set point temperature of recycled exhaust gas
FR3126450A1 (en) Method and system for controlling an actuator of an internal combustion engine.
FR2925590A3 (en) Supercharging pressure control system for oil engine in vehicle, has pressure sensor for measuring pressure in poumon of control device of turbocompressor, where control device controls position of blades of turbocompressor