EP1049862B1 - Dispositif d'estimation de richesse de systeme d'injection pour moteur a combustion interne - Google Patents
Dispositif d'estimation de richesse de systeme d'injection pour moteur a combustion interne Download PDFInfo
- Publication number
- EP1049862B1 EP1049862B1 EP99900932A EP99900932A EP1049862B1 EP 1049862 B1 EP1049862 B1 EP 1049862B1 EP 99900932 A EP99900932 A EP 99900932A EP 99900932 A EP99900932 A EP 99900932A EP 1049862 B1 EP1049862 B1 EP 1049862B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- richness
- chamber
- filter
- combustion
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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
- F02D41/008—Controlling each cylinder individually
-
- 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
-
- 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
- F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
-
- 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
- F02D41/1477—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation circuit or part of it,(e.g. comparator, PI regulator, output)
- F02D41/1481—Using a delaying circuit
-
- 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
- F02D2041/1415—Controller structures or design using a state feedback or a state space representation
- F02D2041/1416—Observer
-
- 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
- F02D2041/1415—Controller structures or design using a state feedback or a state space representation
- F02D2041/1417—Kalman 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
- F02D41/14—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
-
- 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
- F02D2041/1433—Introducing closed-loop corrections characterised by the control or regulation method using a model or simulation of the system
Definitions
- the invention relates to fuel injection systems. in the combustion chambers of a combustion engine internal, including a spark ignition engine ; it particularly concerns devices allowing to estimate the air / fuel ratio admitted in combustion chambers usable in such systems.
- Such a device can be used in particular in a injection system of the kind shown schematically in figure 1.
- the air admitted to through a filter 14 passes through a throttle body 16 before to arrive at an intake manifold 18.
- Exhaust gases leave the rooms by individual tubes which connect at a point of confluence to a collector exhaust 20.
- the injection times are fixed with an advance by relative to the shift to the top dead center of each chamber of combustion, using a synchronization signal supplied by a sensor 28 placed opposite the flywheel 30 of the motor 10.
- a simple model of wealth representation measured at the confluence point consists in associating, with the measurement made by the sensor 26 at several successive passes combustion chambers at top dead center, a weighting coefficient which is solely a function of the seniority of the passage in the operating cycle of the engine.
- the entry of the model is the wealth admitted to the combustion chamber which has just shifted to top dead center (current cylinder). Exhaust puffs to the point of confluence are combined together to represent the mixture of gases.
- the present invention aims in particular to provide a estimation device responding better than those previously known to the requirements of practice, from the fact that it very significantly reduces the incidence of asymmetries and, in precisely the case of asymmetry, the invention improves the correction of the dispersions of injector characteristics.
- the invention notably proposes a device in which the behavior model includes a particular sub-model per combustion chamber having, for the order chamber i, a Kalman filter having an mxn matrix of coefficients C ij and a own earnings matrix K ij , i being equal to ⁇ 1, ...., n ⁇ corresponding to the room number and j corresponding to the weighting coefficient number, here from 1 to m.
- the invention proposes a different model for each room i, defined by a set ⁇ j ⁇ of m coefficients, m being able moreover to be equal to n.
- Such a device which eliminates the asymmetry effect has the advantage of greatly reduce the effect of dispersions of characteristics between the injectors and accordingly authorize the use of injectors with machining less precise.
- the model can be represented by one or more matrices (C ij ) l each corresponding to an operating zone l of the engine determined by one or more parameters from the load range, the temperature of the exhaust gases, the temperature of the cooling water, engine speed and pressure in the intake manifold.
- the matrix chosen may also depend on the setpoint richness given by the computer and which can depend on engine operating conditions according to constraints on pollution or driving pleasure.
- the device according to the invention presents the constitution shown in Figure 2. Most of the functions are fulfilled by the computer 21. However some of them, including functions of filtering of fixed characteristics, can be performed in analog form by wired circuits.
- the device comprises a compensator 32 intended for compensate for the delay introduced by the sensor 26.
- Means 34 synchronous wealth acquisition can be looked at as having a Kalman filtering observer 36 and correction means 38 outputting the air / fuel ratios admitted to the rooms during the cycle that has just passed.
- the correction means receive a synchronization signal constituted by the output of the sensor 28 followed by a circuit 40 of modulo n division, here equal to 4.
- Synchronization must be initialized, the sensor 28 not allowing to know which combustion chamber just shifted to top dead center. This initialization can be done by various known methods.
- management means 42 determine the durations opening the injectors 12 from information developed by the computer 21, constituted for example by the air flow admitted and by the required richness, and from corrections provided by the means 38.
- the model allowing synchronous acquisition means 34 to determine the richness of the mixture admitted to each chamber relies on the measurements provided by the sensor single 26 located at the confluence point. It's important to have, after each shift in top dead center, a representative measure of wealth while a combustion has just shifted to neutral. Now the usual sensors, in particular because they include a pierced protective cover of the probe, introduce a measurement delay.
- the adopted strategy is represented functionally in Figure 3.
- the signal from the probe is submitted to a high pass filtering 43 whose characteristics take into account the time constant ⁇ of the sensor cover several tens of ms. So that the filtering is stable, the value taken into account in the high pass filter will be related to the lowest time constant among all those that can be encountered under various conditions engine operation.
- the high pass filter 43 amplifies the noise which is attenuated or eliminated by a feedback loop including a low pass filter 44, an adder 46 receiving the low pass filtering output and an input signal and a subtraction 48.
- High pass and low pass filters introduce earnings and are expected so that these earnings will vary depending of the frequency according to laws which can be those indicated respectively by the solid lines and in phantom in Figure 3A.
- Low pass filtering may just be first-rate.
- the compensation being provided in digital form, on discrete values, we can limit our to performing a transformation of Euler.
- ⁇ denotes the filter gain low pass, designed to eliminate high frequency noise generated or amplified by high-pass inversion filtering.
- this Kalman filtering is generally performed by adopting the same Kalman gain and the same weights regardless of the room of combustion for which we want to determine the richness.
- an optimal anticipation gain K ij of Kalman is determined and a set of weighting coefficients C for each of the combustion chambers.
- Each of these elementary observers can have a relatively classic constitution.
- the calculation allowing for example to determine the richness of cylinder 1 corresponds to the orientation of switches 52 given in FIG. 4, the switches being in fact constituted by a program permitting the permutation of gain and coefficients for calculation.
- the successive measurements y mes (k) at the confluence point are accumulated at 54 and processed by an operator z -1 at 56 whose output is brought back, by a gain gain loop 58, to accumulation 54.
- the value y is (k) obtained at the output 60 is representative of the richness estimated at the point of confluence. It is reintroduced into an input subtractor 62, so as to generate an error signal e (k) which is applied to the input of the Kalman filtering.
- the weighting coefficients C ij can be obtained experimentally by identification by means of a measurement bench using a set of probes capable of measuring the richnesses on each tubing and the richness at the point of confluence.
- the richness of the current cylinder is then available at the output 64 of the accumulator 54.
- each assembly having a Kalman gain K ij and a set of weighting coefficients C ij , each assembly being assigned to a particular engine operating zone.
- the richness correction to be made to a cylinder to be determined is calculated as a product of two terms, a term 1 + ⁇ g , ⁇ g being a percentage of general correction relating to the richness measured at the point of confluence, a term 1 + ⁇ i, specific to the cylinder of order i in which the injection will be controlled.
- the first term is developed from a signal error provided by a subtractor 66 which receives on the one hand a signal representative of the wealth setpoint (which depends on engine operating conditions) and on the other hand, the output signal from memory 50.
- An error management module 68 develops a corrective term, which is processed by a proportional-integral filter 70 intended to stabilize the system. We thus obtain ⁇ g.
- ⁇ i are each developed using a subtractor 72 which receives on the one hand the output signal 64 modulo 4, developed by a switch 5, and on the other hand a richness set signal specific to the cylinder.
- This wealth setpoint signal can be the same for all cylinders.
- the wealth deposit could also be different depending on the cylinder.
- the error signal obtained is still subject to a proportional-integral filtering 74, known as PI, to obtain a corrector term ⁇ i.
- a circuit 76 will allow to develop the product (1 + ⁇ i) (1 + ⁇ g) which constitutes a correction factor on the injection time of cylinder i.
- PI filtering has a role in compensating for the gas path between the injection points and the confluence.
- the wealth error management module 68 has in particular to make the switchings of the sensor faster by acting on the error injected into the PI 70 filter.
- a hysteresis only causing a tilting of the sensor that beyond stoichiometry when going towards a rich mixture, below stoichiometry when returns to a lean mixture. Beyond the tilting, the management module has a substantially proportional response.
- K p and integral K i of the correction filters 74 are chosen as a function of the travel delay between the injectors and the richness sensor, counted in number of TDCs.
- K p will generally be less than 1 to attenuate the high frequencies.
- P is an adjustable constant to adjust the dynamics.
- the management circuit 42 (FIG. 2) allows, at from an input signal 78 indicating the amount of air admitted to the cylinder and from the corrector term received from the means 36, to modify a corresponding basic injection time to the wealth setpoint to set the opening time of each of the injectors 12 and order the injector.
- This circuit can actually include a digital part of calculation incorporated in the computer 21 and an analog part and of power developing the pulsed supply current injectors.
- the wealth management circuit can correspond to the block diagram of FIG. 6.
- the wealth instruction for the injector i is applied to the input 80 and multiplied by a signal 82 representative of the quantity of air admitted.
- the product is multiplied by the gain of the injector at 84 to obtain a base injection time Ti.
- the correction signal supplied by the means in FIG. 5 is used to supply Ti (1 + ⁇ i ) (1 + ⁇ g )
- Establishing the model requires determining the weighting coefficients for a given engine. This determination can be made on a test bench in temporarily equipping the engine with richness sensors at the output of each cylinder, in addition to the final sensor.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Description
- un capteur fournissant un signal de sortie à variation sensiblement linéaire avec la richesse, placé à un point de confluence des échappements des n chambres, et
- des moyens de calcul pour :
- mémoriser un modèle de comportement de l'échappement au point de confluence basé sur l'hypothèse que la richesse au point de confluence, ou le rapport air/combustible, est une somme pondérée des contributions des échappements des chambres individuelles, le coefficient de pondération étant d'autant plus faible que la combustion dans la chambre est plus ancienne, et
- estimer, après chaque passage au point mort haut, le rapport air/combustible à partir des valeurs mesurées et du modèle.
- la position angulaire du papillon 16, mesurée par un capteur 22,
- la pression dans le collecteur d'admission, mesurée par un capteur 24,
- la température de l'eau de refroidissement et/ou des gaz d'échappement, et
- le signal de sortie d'un capteur de mesure de richesse 26, placé au point de confluence.
un terme 1+λg, λg étant un pourcentage de correction générale portant sur la richesse mesurée au point de confluence,
un terme 1+λi, particulier au cylindre d'ordre i dans lequel l'injection va être commandée.
Kp sera généralement inférieur à 1 pour atténuer les hautes fréquences.
Ki peut être de la forme :
- immédiatement après lancement du moteur, richesse supérieure à la stoechiométrie permettant une fin de démarrage et un départ optimal, la richesse étant fonction de la température du liquide de refroidissement est d'autant plus important que la température est basse.
- à la fin d'une période initiale (21 secondes par exemple) calcul d'un rapport R/combustible correspondant à une "limite" pauvre et de la durée d'un palier de maintien à cette valeur, uniquement en fonction de la température du liquide de refroidissement (supposée représentative de l'état du catalyseur)
- décroissance quasi exponentielle vers la limite pauvre, pour réduire la pollution, suivie d'un palier
- à l'issue du palier, au cours duquel il y a réchauffement du catalyseur, remontée vers la stoechiométrie, suivant une loi qui peut être linéaire pour assurer un bon agrément de conduite, la pente de croissance étant calibrable.
Claims (5)
- Dispositif d'estimation de la richesse du mélange admis dans chacune des n chambres de combustion (n étant un entier supérieur à 1) d'un moteur ayant des injecteurs d'injection dans les cylindres, comprenant :un capteur (26) fournissant un signal de sortie à variation sensiblement linéaire avec la richesse, placé à un point de confluence des échappements des n chambres, etdes moyens de calcul pour :mémoriser un modèle de comportement de l'échappement au point de confluence basé sur l'hypothèse que la richesse au point de confluence, ou le rapport air/combustible, est une somme pondérée des contributions des échappements des chambres individuelles, le coefficient de pondération étant d'autant plus faible que la combustion dans la chambre est plus ancienne, etestimer, après chaque passage au point mort haut, le rapport air/combustible à partir des valeurs mesurées et du modèle.
- Dispositif selon la revendication 1, caractérisé en ce que chaque sous-modèle est affecté de plusieurs jeux de matrice et gain correspondant chacun à des zones de fonctionnement du moteur déterminées par un ou plusieurs paramètres parmi le domaine de charge, la température des gaz d'échappement, la température de l'eau de refroidissement, la vitesse du moteur et la pression dans le collecteur d'admission.
- Dispositif selon la revendication 1 ou 2, caractérisé en ce que le capteur de richesse comprend, en plus d'une sonde (26) placée au point de conluence, des moyens de compensation du retard de réponse de la sonde, comprenant un filtre passe-haut (42) suivi d'une boucle de contre-réaction ayant un filtre passe-bas (48), un additionneur (46) recevant la sortie du filtre passe-bas et le signal d'entrée provenant de la sonde et un soustracteur (48) recevant le signal de sortie de l'additionneur et le signal de sortie du filtre passe-haut, alimentant le filtre passe-bas.
- Dispositif selon la revendication 3, caractérisé en ce que les moyens de compensation sont numériques, en ce que les fonctions de filtrage passe-haut sont de la forme : tandis que le filtrage passe-bas est de la forme : ou
x()k : variable d'état
u(k) : valeur mesurée
y (k) : valeur de sortie
k : instant considéré
= gain de filtrage passe-bas
β = pôle du filtre - Système d'injection du combustible dans les chambres de combustion d'un moteur à combustion interne, comprenant :un dispositif selon l'une quelconque des revendications 1 à 4,un module de gestion d'erreur de richesse recevant le signal de sortie du capteur de richesse et le soumettant à un filtrage proportionnel-intégral, pour former un terme de correction général λg,
un multiplicateur (76) fournissant le produit de (1 + λg) et (1 + λi),
et un circuit de gestion commandant les injecteurs à partir d'un signal représentant la quantité d'air aspiré et de la sortie du multiplicateur.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9800502A FR2773847B1 (fr) | 1998-01-19 | 1998-01-19 | Dispositif d'estimation de richesse de systeme d'injection pour moteur a combustion interne |
FR9800502 | 1998-01-19 | ||
PCT/FR1999/000072 WO1999036690A1 (fr) | 1998-01-19 | 1999-01-15 | Dispositif d'estimation de richesse de systeme d'injection pour moteur a combustion interne |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1049862A1 EP1049862A1 (fr) | 2000-11-08 |
EP1049862B1 true EP1049862B1 (fr) | 2002-09-18 |
Family
ID=9521903
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99900932A Expired - Lifetime EP1049862B1 (fr) | 1998-01-19 | 1999-01-15 | Dispositif d'estimation de richesse de systeme d'injection pour moteur a combustion interne |
Country Status (7)
Country | Link |
---|---|
US (1) | US6357429B1 (fr) |
EP (1) | EP1049862B1 (fr) |
JP (1) | JP2002527657A (fr) |
BR (1) | BR9907102B1 (fr) |
DE (1) | DE69902992T2 (fr) |
FR (1) | FR2773847B1 (fr) |
WO (1) | WO1999036690A1 (fr) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1321203B1 (it) * | 2000-02-01 | 2003-12-31 | Magneti Marelli Spa | Metodo per il controllo del titolo della miscela aria - carburante inun motore a scoppio . |
DE10027410C2 (de) | 2000-06-02 | 2003-12-04 | Emitec Emissionstechnologie | Abgasreinigungssystem mit verzögerter Meßwerterfassung |
FR2817294B1 (fr) * | 2000-11-27 | 2003-04-11 | Renault | Procede d'annulation des variations de richesse pour un moteur a allumage commande |
DE10131179A1 (de) * | 2001-06-29 | 2003-01-16 | Bosch Gmbh Robert | Verfahren zur Bestimmung des Kraftstoff/Luftverhältnisses in einzelnen Zylindern eines mehrzylindrigen Verbrennungsmotors |
FR2834314B1 (fr) | 2001-12-31 | 2005-01-07 | Peugeot Citroen Automobiles Sa | Procede d'estimation de la richesse en carburant d'un melange combustible consomme par un moteur a injection, utilisable quel que soit le regime moteur |
EP1378655B1 (fr) | 2002-07-02 | 2010-11-03 | BorgWarner, Inc. | Soupape à gaz |
JP3998136B2 (ja) * | 2002-11-28 | 2007-10-24 | 本田技研工業株式会社 | 内燃機関の空燃比制御装置 |
JP4184058B2 (ja) * | 2002-12-05 | 2008-11-19 | 本田技研工業株式会社 | 制御装置 |
FR2867232B1 (fr) * | 2004-03-05 | 2006-05-05 | Inst Francais Du Petrole | Methode d'estimation de la richesse en carburant dans un cylindre d'un moteur a combustion |
US8396670B2 (en) * | 2004-08-16 | 2013-03-12 | Venture Milling, Inc. | Process, system and method for improving the determination of digestive effects upon an ingestable substance |
US7607638B2 (en) | 2005-03-08 | 2009-10-27 | Borgwarner Inc. | EGR valve having rest position |
FR2886346B1 (fr) * | 2005-05-30 | 2010-08-27 | Inst Francais Du Petrole | Methode d'estimation par un filtre de kalman etendu de la richesse dans un cylindre d'un moteur a combustion |
FR2886345B1 (fr) * | 2005-05-30 | 2010-08-27 | Inst Francais Du Petrole | Methode d'estimation par un filtre non-lineaire adaptatif de la richesse dans un cylindre d'un moteur a combustion |
JP4280931B2 (ja) | 2005-10-19 | 2009-06-17 | トヨタ自動車株式会社 | 内燃機関の空燃比制御装置 |
US7581390B2 (en) * | 2006-04-26 | 2009-09-01 | Cummins Inc. | Method and system for improving sensor accuracy |
JP5035223B2 (ja) * | 2008-12-01 | 2012-09-26 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
FR2983244B1 (fr) * | 2011-11-28 | 2013-12-20 | Peugeot Citroen Automobiles Sa | Procede et dispositif permettant d'estimer en continu la richesse cylindre d'un moteur |
US10496775B2 (en) * | 2013-01-31 | 2019-12-03 | General Electric Company | Method and system for use in dynamically configuring data acquisition systems |
US10718286B2 (en) * | 2016-08-23 | 2020-07-21 | Ford Global Technologies, Llc | System and method for controlling fuel supplied to an engine |
US10995688B2 (en) * | 2019-06-04 | 2021-05-04 | GM Global Technology Operations LLC | Method and system for determining thermal state |
KR102191834B1 (ko) * | 2019-10-30 | 2020-12-16 | 현대자동차주식회사 | 차량의 엔진 신호 처리 방법 |
CN115183273A (zh) * | 2022-07-21 | 2022-10-14 | 中国航发沈阳发动机研究所 | 一种加力发动机燃烧室 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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DE69225212T2 (de) * | 1991-12-27 | 1998-08-13 | Honda Motor Co Ltd | Verfahren zum Feststellen und Steuern des Luft/Kraftstoffverhältnisses in einer Brennkraftmaschine |
US5535135A (en) * | 1993-08-24 | 1996-07-09 | Motorola, Inc. | State estimator based exhaust gas chemistry measurement system and method |
EP0670419B1 (fr) * | 1994-02-04 | 1999-12-29 | Honda Giken Kogyo Kabushiki Kaisha | Système d'estimation du rapport air/carburant pour un moteur à combustion interne |
US5600056A (en) * | 1994-06-20 | 1997-02-04 | Honda Giken Kogyo Kabushiki Kaisha | Air/fuel ratio detection system for multicylinder internal combustion engine |
US5657736A (en) | 1994-12-30 | 1997-08-19 | Honda Giken Kogyo Kabushiki Kaisha | Fuel metering control system for internal combustion engine |
JPH1073040A (ja) * | 1996-08-29 | 1998-03-17 | Honda Motor Co Ltd | 内燃機関の空燃比制御装置 |
JP3046948B2 (ja) * | 1997-08-20 | 2000-05-29 | 本田技研工業株式会社 | 内燃機関の空燃比制御装置 |
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1998
- 1998-01-19 FR FR9800502A patent/FR2773847B1/fr not_active Expired - Fee Related
-
1999
- 1999-01-15 DE DE69902992T patent/DE69902992T2/de not_active Expired - Lifetime
- 1999-01-15 EP EP99900932A patent/EP1049862B1/fr not_active Expired - Lifetime
- 1999-01-15 WO PCT/FR1999/000072 patent/WO1999036690A1/fr active IP Right Grant
- 1999-01-15 JP JP2000540368A patent/JP2002527657A/ja active Pending
- 1999-01-15 US US09/600,264 patent/US6357429B1/en not_active Expired - Lifetime
- 1999-01-15 BR BRPI9907102-9A patent/BR9907102B1/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FR2773847B1 (fr) | 2000-03-24 |
EP1049862A1 (fr) | 2000-11-08 |
FR2773847A1 (fr) | 1999-07-23 |
BR9907102A (pt) | 2000-10-24 |
WO1999036690A1 (fr) | 1999-07-22 |
DE69902992T2 (de) | 2003-05-28 |
US6357429B1 (en) | 2002-03-19 |
JP2002527657A (ja) | 2002-08-27 |
DE69902992D1 (de) | 2002-10-24 |
BR9907102B1 (pt) | 2012-02-07 |
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