EP0838583B1 - Dispositif de contrôle du fonctionnement d'un moteur diesel notamment de véhicule automobile - Google Patents
Dispositif de contrôle du fonctionnement d'un moteur diesel notamment de véhicule automobile Download PDFInfo
- Publication number
- EP0838583B1 EP0838583B1 EP19970402543 EP97402543A EP0838583B1 EP 0838583 B1 EP0838583 B1 EP 0838583B1 EP 19970402543 EP19970402543 EP 19970402543 EP 97402543 A EP97402543 A EP 97402543A EP 0838583 B1 EP0838583 B1 EP 0838583B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- engine
- vibrations
- amplitude
- operating
- respect
- 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
Links
- 238000012544 monitoring process Methods 0.000 title claims description 7
- 238000013500 data storage Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 3
- 238000012937 correction Methods 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000010365 information processing Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000035945 sensitivity Effects 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1497—With detection of the mechanical response of 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
- F02D41/22—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
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/221—Safety or indicating devices for abnormal conditions relating to the failure of actuators or electrically driven elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Definitions
- the present invention relates to a device for checking the operation of a diesel engine, in particular motor vehicle.
- Such a fault can be caused for example by a leaking injector on a single engine cylinder, which is particularly difficult to detect by the management system injection.
- the object of the invention is therefore to resolve these problems in proposing a device to control the operation a diesel engine, in particular a motor vehicle, which is simple, reliable and which makes it possible to detect for example an injector fault with a reaction time adapted to the severity of this fault for the engine.
- FIG. 1 we have shown in FIG. 1, in general, the structure of a functioning control device a diesel engine, in particular a motor vehicle.
- the diesel engine is designated by the general reference 1 and the device according to the invention includes a vibration sensor, designated by the reference general 2, located anywhere on the engine of the vehicle, to detect the amplitude of its vibrations during its operation.
- the output of this sensor is connected to a information processing constituted by any computer suitable, designated for example by the general reference 3 and associated with data storage means designated by the general reference 4, which will be described in more detail by the after.
- the information processing unit 3 and the data storage means 4 can for example be integrated into a main control computer of the engine operation or in a dedicated dedicated computer to this function.
- the vibration sensor designated by the reference general 2 can be a conventional type sensor allowing to detect the vibrations of the engine and constituted, for example, by an accelerometry sensor.
- the senor is always designated by general reference 2 and the output of it is connected to signal processing means, designated by the general reference 5.
- These processing means include, for example, means of amplification, filtering, rectification and / or integration, of classical type.
- the output of these processing means 5 is connected to means, designated by the general reference 6, allowing establish time windows for amplitude reading vibrations, corresponding to certain operating phases of the engine and referenced on its operating cycle.
- vibrations can, for example, be noted in a range of x degrees before top dead center (TDC) or to the corresponding top dead center of this cylinder.
- means designated by the general reference 7 allowing to recognize for each reading time window, the corresponding cylinder of the motor, these means 7 receiving as input, for example, operating speed and operating load information engine.
- the output of these recognition means 7 is connected, on the one hand, to means 8 of amplitude correction vibrations noted to take into account the distance separating each cylinder from the sensor, these means 8 receiving also the output of the establishment means 6 and other part, to calculation means designated by the general reference 9, which will be described in more detail below.
- the correction means 8 make it possible to compensate signal level dispersions between cylinders, linked to their different distances from the sensor, a correction of gain being applied specifically to the amplitude of the vibrations of each cylinder of the engine by these correction means.
- correction means 8 The output of these correction means 8 is connected to the calculation means 9 mentioned above but also to means of establishing reference values, designated by reference 10 in this figure.
- the calculation means 9 are adapted for establish characteristic information IC of the operation of the motor, by dividing the amplitude of the vibrations associated with each cylinder of the engine by a reference value also associated with each cylinder thereof.
- the reference value associated with each cylinder of the motor is delivered by the means 10 which make it possible to calculate the lowest moving average of the amplitude of vibrations noted for each cylinder, during cycles previous engine operation.
- This characteristic operating information of the engine is then transmitted to designated analysis means by the general reference 11 in this figure, to determine information to control the operation of the engine.
- these means of analysis include comparison means designated by the general reference 12, receiving as input the characteristic information IC of the engine operation and engine speed and operating load thereof, these means 12 being suitable for comparing characteristic IC information with a safety threshold which will be described in more detail by the continued, and if exceeded, read a number of laps maximum allowed of the engine, in storage means of corresponding data consisting, for example, of storage means designated by the general reference 4 on the figure 1.
- comparison means 12 then deliver two information to control means designated by the reference general 13 in this figure, namely information security threshold violation and information maximum permissible number of engine revolutions, to allow these means 13 for controlling a cut-off of at least the cylinder correspondent of the engine, when the characteristic information always exceeds the safety threshold and the number of maximum permissible engine revolutions are reached, in order to avoid any degradation of it.
- the means of analysis process two pieces of information, namely a safety threshold being exceeded on a cylinder being analyzed and the number of revolutions maximum allowed of the motor to determine or not a cut of this cylinder or possibly of the engine.
- the safety threshold and the maximum number of turns authorized engine can, as previously stated, be stored in data storage means which include, for different operating regimes and loads of the motor, a protection curve of it allowing to determine the maximum authorized number of turns of the motor according to the characteristic operating information of the engine and established from a predetermined curve engine breakage, as illustrated in the Figures 3 to 5.
- the safety threshold can correspond to the asymptote horizontal of this protection curve like this is illustrated.
- the device according to the invention has a number of advantages in that where it ensures optimal and immediate protection of the cylinder or engine, in case of malfunction, by example of the injection system of this one, and this with a reduced level of false detections.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
- des moyens de relevé de l'amplitude des vibrations du moteur lors de certaines phases de son cycle de fonctionnement, comprenant un capteur de vibrations du moteur, des moyens de traitement du signal de sortie de ce capteur, des moyens d'établissement de fenêtres temporelles de relevé de l'amplitude des vibrations, correspondant auxdites phases de fonctionnement du moteur et référencées sur son cycle de fonctionnement, des moyens de reconnaissance pour chaque fenêtre temporelle de relevé, du cylindre correspondant du moteur et des moyens de correction de l'amplitude des vibrations relevées pour tenir compte de la distance séparant les cylindres du capteur,
- des moyens d'établissement d'une information caractéristique du fonctionnement du moteur, en divisant l'amplitude de ces vibrations par une valeur de référence, délivrée par des moyens de calcul de la plus faible moyenne glissante de l'amplitude des vibrations relevées pour chaque cylindre, lors de cycles précédents du fonctionnement du moteur, et
- des moyens d'analyse de cette information caractéristique du fonctionnement du moteur, pour en déterminer une information de contrôle du fonctionnement de celui-ci, recevant des informations de régime et de charge de fonctionnement de celui-ci et comprenant des moyens de comparaison, pour le régime et la charge donnés, de l'information caractéristique du fonctionnement du moteur avec un seuil de sécurité pour, en cas de dépassement, lire un nombre de tours maximal autorisé du moteur dans des moyens de stockage de données correspondantes et des moyens de coupure d'au moins le cylindre correspondant du moteur, lorsque l'information caractéristique dépasse toujours le seuil de sécurité et que le nombre de tours maximal autorisé du moteur est atteint.
- la figure 1 représente un schéma synoptique illustrant la structure générale d'un dispositif de contrôle selon l'invention,
- la figure 2 représente un schéma synoptique illustrant les différents moyens entrant dans la constitution d'un tel dispositif, et
- les figures 3, 4 et 5 représentent différents graphiques illustrant la détermination d'une courbe de protection d'un moteur, utilisée dans un dispositif de contrôle selon l'invention.
Claims (4)
- Dispositif de contrôle du fonctionnement d'un moteur Diesel, notamment de véhicule automobile, caractérisé en ce qu'il comporte :des moyens de relevé de l'amplitude des vibrations du moteur lors de certaines phases de son cycle de fonctionnement, comprenant un capteur (2) de vibrations du moteur, des moyens (5) de traitement du signal de sortie de ce capteur, des moyens (6) d'établissement de fenêtres temporelles de relevé de l'amplitude des vibrations, correspondant auxdites phases de fonctionnement du moteur et référencées sur son cycle de fonctionnement, des moyens (7) de reconnaissance pour chaque fenêtre temporelle de relevé, du cylindre correspondant du moteur et des moyens (8) de correction de l'amplitude des vibrations relevées pour tenir compte de la distance séparant les cylindres du capteur,des moyens (9) d'établissement d'une information caractéristique (IC) du fonctionnement du moteur, en divisant l'amplitude de ces vibrations par une valeur de référence, délivrée par des moyens de calcul (10) de la plus faible moyenne glissante de l'amplitude des vibrations relevées pour chaque cylindre, lors de cycles précédents du fonctionnement du moteur, etdes moyens (11) d'analyse de cette information caractéristique (IC) du fonctionnement du moteur, pour en déterminer une information de contrôle du fonctionnement de celui-ci, recevant des informations de régime et de charge de fonctionnement de celui-ci et comprenant des moyens (12) de comparaison, pour le régime et la charge donnés, de l'information caractéristique (IC) du fonctionnement du moteur avec un seuil de sécurité pour, en cas de dépassement, lire un nombre de tours maximal autorisé du moteur dans des moyens de stockage de données correspondantes (4) et des moyens (13) de coupure d'au moins le cylindre correspondant du moteur, lorsque l'information caractéristique (IC) dépasse toujours le seuil de sécurité et que le nombre de tours maximal autorisé du moteur est atteint.
- Dispositif de contrôle selon la revendication 1, caractérisé en ce que les moyens de coupure (13) sont adaptés pour couper le moteur.
- Dispositif de contrôle selon la revendication 1 ou 2, caractérisé en ce que les moyens de stockage de données (4) comprennent, pour différents régimes et charges de fonctionnement du moteur, une courbe de protection du moteur, permettant de déterminer le nombre de tours maximal autorisé du moteur en fonction de l'information caractéristique du fonctionnement de celui-ci et établie à partir d'une courbe prédéterminée de casse du moteur obtenue par essais du moteur.
- Dispositif de contrôle selon la revendication 3, caractérisé en ce que le seuil de sécurité correspond à l'asymptote horizontale de la courbe de protection.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9613138A FR2755185B1 (fr) | 1996-10-28 | 1996-10-28 | Dispositif de controle du fonctionnement d'un moteur diesel notamment de vehicule automobile |
FR9613138 | 1996-10-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0838583A1 EP0838583A1 (fr) | 1998-04-29 |
EP0838583B1 true EP0838583B1 (fr) | 2000-03-22 |
Family
ID=9497107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19970402543 Expired - Lifetime EP0838583B1 (fr) | 1996-10-28 | 1997-10-27 | Dispositif de contrôle du fonctionnement d'un moteur diesel notamment de véhicule automobile |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0838583B1 (fr) |
DE (1) | DE69701500T2 (fr) |
ES (1) | ES2143289T3 (fr) |
FR (1) | FR2755185B1 (fr) |
PT (1) | PT838583E (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005005351A1 (de) * | 2005-02-05 | 2006-08-17 | L'orange Gmbh | Verfahren und Einrichtung zur Erfassung des Einspritzvorgangs eines Kraftstoffinjektors einer Brennkraftmaschine mittels eines Schallsensors |
DE102013211003A1 (de) | 2013-06-13 | 2014-12-18 | Robert Bosch Gmbh | Vermeidung einer Sicherheitskraftstoffabschaltung im Teilmotorbetrieb |
KR102663102B1 (ko) * | 2019-01-16 | 2024-05-02 | 만 에너지 솔루션즈 에스이 | 내연기관의 작동 방법 및 내연기관의 작동을 위한 제어 디바이스 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5637535A (en) * | 1979-09-05 | 1981-04-11 | Nippon Soken Inc | Knocking detector |
JPS5669532A (en) * | 1979-11-09 | 1981-06-10 | Nippon Soken Inc | Knocking detecting device |
JPS6026164A (ja) * | 1983-07-25 | 1985-02-09 | Hitachi Constr Mach Co Ltd | 燃料噴射ポンプの故障診断装置 |
US4643023A (en) * | 1985-11-01 | 1987-02-17 | Capps David F | Vibration testing apparatus |
DE4139244C1 (en) * | 1991-11-26 | 1992-12-24 | Reinhard Prof. Dr.Sc.Nat. O-2500 Rostock De Vilbrandt | Automatically monitoring and optimising fuel injection for Diesel engine - using ultrasonic emission analysis for each cylinder with evaluation and comparison of indices derived from sonic converter during fuel atomising |
DE19548279B4 (de) * | 1995-09-28 | 2006-12-14 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Überwachung eines Kraftstoffzumeßsystems |
-
1996
- 1996-10-28 FR FR9613138A patent/FR2755185B1/fr not_active Expired - Fee Related
-
1997
- 1997-10-27 ES ES97402543T patent/ES2143289T3/es not_active Expired - Lifetime
- 1997-10-27 EP EP19970402543 patent/EP0838583B1/fr not_active Expired - Lifetime
- 1997-10-27 DE DE1997601500 patent/DE69701500T2/de not_active Expired - Fee Related
- 1997-10-27 PT PT97402543T patent/PT838583E/pt unknown
Also Published As
Publication number | Publication date |
---|---|
DE69701500D1 (de) | 2000-04-27 |
DE69701500T2 (de) | 2000-12-21 |
FR2755185A1 (fr) | 1998-04-30 |
EP0838583A1 (fr) | 1998-04-29 |
PT838583E (pt) | 2000-08-31 |
ES2143289T3 (es) | 2000-05-01 |
FR2755185B1 (fr) | 1999-01-15 |
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