EP0468007B1 - Systeme de commande et/ou de regulation d'un moteur a combustion interne - Google Patents

Systeme de commande et/ou de regulation d'un moteur a combustion interne Download PDF

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Publication number
EP0468007B1
EP0468007B1 EP91902506A EP91902506A EP0468007B1 EP 0468007 B1 EP0468007 B1 EP 0468007B1 EP 91902506 A EP91902506 A EP 91902506A EP 91902506 A EP91902506 A EP 91902506A EP 0468007 B1 EP0468007 B1 EP 0468007B1
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EP
European Patent Office
Prior art keywords
signal
signal values
range
sensors
value
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Expired - Lifetime
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EP91902506A
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German (de)
English (en)
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EP0468007A1 (fr
Inventor
Frank Bederna
Alois Hils
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Robert Bosch GmbH
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Robert Bosch GmbH
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    • 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
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
    • F02D41/28—Interface circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
    • F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
    • F02D11/107—Safety-related aspects
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/04—Engine intake system parameters
    • F02D2200/0404—Throttle position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/60—Input parameters for engine control said parameters being related to the driver demands or status
    • F02D2200/602—Pedal position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2400/00—Control systems adapted for specific engine types; Special features of engine control systems not otherwise provided for; Power supply, connectors or cabling for engine control systems
    • F02D2400/08—Redundant elements, e.g. two sensors for measuring the same parameter

Definitions

  • the invention relates to a system for controlling and / or regulating an internal combustion engine according to the preamble of independent patent claim 1.
  • the system for controlling and / or regulating an internal combustion engine described there has at least one measuring device for detecting an operating parameter of the internal combustion engine and / or the motor vehicle, the dependency of which controls and / or regulates the internal combustion engine.
  • This operating parameter relates in particular to the position of a power-determining element of an electronic accelerator pedal system, such as a power actuator and / or an operating element that can be actuated by the driver. Malfunction detection for the measuring device takes place on the basis of the signal values that it emits and represents the operating parameters by comparing these signal values with predetermined limit values as a signal range check.
  • the invention is therefore based on the object of specifying measures which ensure comprehensive operational reliability and availability of a control and / or regulating system of an internal combustion engine. This is achieved by the features according to claim 1.
  • a monitoring device for an electronically controlled throttle valve in a motor vehicle is known, in particular with the accelerator pedal of an electronic accelerator system a measuring device is connected, which in one of the exemplary embodiments consists of a position transmitter potentiometer and a monitoring potentiometer.
  • the position signal supplied by the position transmitter potentiometer is compared in a logic unit with threshold values determined from the signal of the monitoring potentiometer and the function of the measuring device is checked on the basis of the signal size of the position transmitter potentiometer in comparison with the threshold values.
  • One advantage of the procedure according to the invention can be seen in the fact that a checking method is used which is less sensitive in sub-areas which are characterized by impaired, incomplete signal transmission or generation, for example as a result of an increased contact resistance between the resistance track and wiper tap of a potentiometer is designed. On the one hand, this enables malfunctions of the sensor that actually occur to be recognized, but effectively prevents the entire system from being switched off due to the supposed malfunctions set out above.
  • the procedure according to the invention ensures extensive operational reliability and availability of a system for controlling and / or regulating an internal combustion engine, since in the case of a measuring device consisting of a plurality of sensors, the first malfunction check determines whether the signal values generated by the sensors correspond to one another in a predetermined manner the first value range, a detection of shunts with parasitic resistances both to the supply voltage poles and between the signal lines of the sensors as well as non-linearities of the sensor characteristics and interruptions of the signal lines with parasitic resistances to the supply voltage poles is possible.
  • a second, less sensitive malfunction check in the specified sub-areas also makes it possible for the abovementioned errors to be recognized in these sub-areas and for the system to be switched off the supposed malfunctions set out above can be dispensed with, thus improving the availability and operational safety of the system.
  • FIG. 1 shows a block diagram of a system equipped with a measuring device consisting of several sensors using the example of an electronic accelerator pedal.
  • FIG. 2 shows a preferred exemplary embodiment of the measuring device using the example of a double potentiometer, while the procedure according to the invention is illustrated in FIGS. 3 and 4 using the example of a characteristic diagram and a flow chart.
  • FIG. 1 shows a power actuator 10 of an internal combustion engine, not shown, for example a throttle valve for influencing the air supply to the internal combustion engine or a control rod for controlling the amount of fuel to be supplied to the internal combustion engine.
  • 11 denotes an operating element which can be actuated by the driver, for example an accelerator pedal of an electronic accelerator pedal system.
  • the power actuator 10 and / or the control element 11 are connected via connections 12 and 13 to measuring devices 14 and 15 comprising several sensors, which can be constructed identically.
  • the measuring devices 14 and 15 generate signal quantities corresponding to the number of sensors, which represent the position of the respectively assigned element 10 or 11.
  • the measuring device 14 comprises a plurality of sensors 16 to 18 for detecting the position of the assigned element.
  • sensors 16 to 18 are potentiometers.
  • the mechanical connection 12 acts on the sensors 16 to 18 in such a way that a change in position of the assigned element 10 leads to a corresponding change in the output signal quantities of the sensors, so that each sensor generates a signal quantity representing the position of the assigned element.
  • the mechanical connection 12 is connected to the movable wiper taps of the potentiometers.
  • the position signal size is taken from the grinder taps.
  • the measuring device 14 is linked to the computing unit 32 via signal lines 24 to 26, which connect the sensors to A / D converters 28 to 30, which are part of a computing unit 32.
  • the computing unit 32 comprises a further group of A / D converters 38 which are connected to the measuring device 15 via the signal lines 34. For reasons of clarity, these elements have not been shown in detail. Their structure and mode of operation result from the description in connection with the measuring device 14.
  • the A / D converters 28 to 30 are connected via a connecting line 40 to a computer 42, to which the line 44 is also routed, which connects the computer 42 to the A / D converters 38.
  • the output line 46 of the computer 42 leads via an output stage 48 to an output line 50 of the computing unit 32, which connects the computing unit 32 to the power actuator 10 of the internal combustion engine.
  • the measuring device 14 outputs via its signal lines 24 to 26 one of the positions of the element 10, which is transmitted to the sensors 16 to 18 via the connection 12, to the computing unit 32.
  • the computing unit 32 In the computer 42 of the computing unit 32, the signal quantities converted from analog to digital quantities by means of the A / D converters 28 to 30 and transmitted to the computer 42 via the line 40 are processed.
  • the signal size of the sensor 16 which represents the power actuator position and thus the actual value of a power control circuit consisting of the internal combustion engine and the computing unit 32, is compared in the computer 42 with the desired value of the control element position supplied to the computer via line 44 and as a function of the comparison result
  • the power actuator 10 is influenced via the output lines 46, the output stage 48 and the output line 50 in such a way that the difference between the setpoint and actual value is reduced.
  • the signal quantities of the further sensors serve only to monitor the function of the sensor 16.
  • an average or a minimum value from the signal quantities generated by the sensors 16 to 18 is used to regulate the position of the power actuator 10, at least one of the signal quantities of one of the sensors being used to monitor the function of the other.
  • the computing unit 32 performs further functions, such as determining the ignition timing, fuel metering and / or idling control.
  • FIG. 2 shows a preferred embodiment of the measuring devices 14 and / or 15 as a so-called double potentiometer.
  • FIG. 2 shows the measuring device 14 or 15 and the computing unit 32, the inputs and outputs of which are assigned as in FIG. 1.
  • the measuring device comprises two sensors 100 and 102 designed as potentiometers, the wiper taps 104 and 106 of which are connected to the mechanical connection 12 or 13.
  • the two grinder taps 104 and 106 change their position as a function of a change in position of the element acting on the grinder taps via the mechanical connection in parallel to one another in the same direction.
  • the resistance path 108 of the sensor 100 is connected via a connecting line 110 to the positive pole 112 of the supply voltage, while at the other end of the resistance path 108 of the sensor 100 a second line 114 leads to the negative pole 116 of the supply voltage.
  • the Sensor 100 the position of the wiper tap 104 in the vicinity of the positive connection of the supply voltage, as shown in Fig. 2, an idle position of the associated element.
  • the wiper tap 104 is connected via the signal line 118 and the resistor 120 to the signal line 24 or, in the case of the measuring device 15, to one of the lines 34 which connect the measuring devices to the computing unit 32.
  • the resistance path 122 of the sensor 102 is connected via a connecting line 124 to the positive pole 112 of the supply voltage, while at the other end of the resistance path 122 of the sensor 102 a second line 126 is led via the node 128 and the resistor 130 to the negative pole 116 of the supply voltage is.
  • the wiper tap 106 of the sensor 102 is connected to a signal line 132 which leads via the connection point 134 and the resistor 136 to the signal line 26 or, in the case of the measuring device 15, to one of the lines 34 which connect the measuring devices to the computing unit 32.
  • Another resistor 138 lies between the two connection points 134 and 128. In contrast to the sensor 100, the idle position of the sensor 102 is in the vicinity of the negative connection of the supply voltage.
  • the two potentiometers are electrically opposite, i.e. when the position changes, the signal sizes of the two sensors change in the opposite direction.
  • the procedure according to the invention is also used in the case of potentiometers running in the same direction.
  • the signal line 24 leads in the arithmetic unit 32 to a connection point 140, at which there is a resistor 142 against the negative pole 116 of the supply voltage. Furthermore, the signal line 24 is routed via this node 140 on the A / D converter 28 or one of the A / D converters 38. In an analogous manner, the signal line 26 leads via the connection point 144 to which a resistor is connected 146 is connected to the negative pole 116 of the supply voltage to the A / D converter 30. According to FIG. 1, the outputs of the two A / D converters 28 and 30 are connected to a connecting line 40 which connects them to the computer 42.
  • the voltage divider of the resistors 130 and 138 in conjunction with the resistor 146 representing the input circuitry of the computing unit 32 impresses a predetermined minimum signal value on the signal line 132 and 26, which in the case of an interrupted signal line 132 or 26 or an interrupted ground line 126 does not occur. As shown below, this enables a distinction to be made between an interrupted line and an increased contact resistance.
  • the input circuit (resistor 146) of the computing unit 32 belonging to the sensor 102 is designed such that, for example when the signal line is interrupted, a signal quantity is passed to the computing unit which corresponds to an idle position of the assigned element, in particular the value 0.
  • FIG. 3 shows the position-signal quantity characteristics of the two sensors 100 and 102 designed according to FIG. 2.
  • the essentially linear characteristic 200 falling from right to left, represents that of sensor 100, while the opposite one represents the characteristic curve 202 of the sensor 102.
  • These characteristic curves are a consequence of the different supply voltage connections of the two sensors.
  • upper (204) (U G2 ) or lower permissible limit values (206) (U G1 ) can be seen in FIG. 3, within which the signal quantities of the sensors must lie, and a further threshold line 208 (U th ), the lower or lower limit of which Indicates that the idle or near idle range has been reached.
  • the predetermined minimum limit value (210) (Umin) generated by the switching elements 130 and 138 is shown in the idle or near-idle region of the characteristic curve 202 of the sensor 102 used to monitor the sensor 100.
  • a first malfunction check results from a comparison of the signal values with the upper and lower permissible limit values (U G2 , U G1 ). This corresponds to a signal range check for each sensor individually. It can also be checked whether the signal values are in a predetermined permissible tolerance band with respect to one another.
  • This tolerance band can be formed in different ways.
  • electrically counter-rotating sensors it is possible to add the signal quantities. As a result of the electrical counter-rotation, if the sensors function correctly, this leads to the signal variable U G2 which forms the upper maximum limit value.
  • a tolerance band is formed around the latter by adding or subtracting a value that represents the still tolerable deviation between the sensor signal quantities and the sum of the signal quantities of the two sensors is checked for compliance with this tolerance band.
  • this tolerance band can be formed by adding and subtracting a predetermined tolerance value to the signal values of the sensor 100 that controls the control function.
  • the signal value of the monitoring sensor 102 must then lie in this first tolerance band when the measuring device is functioning correctly.
  • This measure can also be used with electrically synchronous sensors; if the behavior is opposite, the signal values must be converted to check for malfunction.
  • this first malfunction check whether the signal sizes of the sensors to one another lie outside a first value range, can cause the entire system to be switched off unnecessarily as a result of detected malfunction because of the high contact resistances that may occur. Therefore, a second type of monitoring is introduced in the idle or near idle area. This consists in that, in this partial area, monitoring is carried out which is less sensitive than the tolerance band monitoring described above. For this purpose, the check is limited to whether the signal values of the two sensors relative to one another are below the upper limit of the tolerance band.
  • a further gain in safety can be achieved in this sub-area by the circuit measures mentioned above.
  • Checking the signal value of the sensor 102 with the predetermined minimum limit value Umin enables a distinction to be made between an actual fault condition due to a line break, which must result in a corresponding reaction, or an increased contact resistance.
  • the second range of values is therefore limited by Umin.
  • An analogous procedure can also be carried out with regard to the sensor 100. In the exemplary embodiment, however, U G1 is retained as the lower limit.
  • This second type of monitoring or malfunction check is therefore less sensitive to the first.
  • the procedure described above is to be used with only one sensor, the function of which can be monitored by means of another, second operating parameter.
  • the program executed in the computing unit 32 for malfunction detection of the measuring device 14, which can also be applied in an analogous manner to the measuring device 15, is shown as a flow chart in FIG.
  • the two signal variables which are determined via lines 24 and 26 and represent the position of the respectively assigned element, are read in in step 300 and subjected to a query in step 302 as to whether one of the two signal variables has an upper permissible one Limit (U G2 ) exceeded. If this is the case, a malfunction of the measuring device is recognized in step 304, the cause of which can be, for example, a short circuit to plus and, if appropriate, an intended emergency operation function is initiated and the program part ends.
  • U G2 upper permissible one Limit
  • both signal quantities are below their maximum permissible limit value (U G2 )
  • U G2 maximum permissible limit value
  • U th a predetermined threshold
  • a first, and in the other case a second, monitoring function is initiated.
  • step 308 it is checked in query step 308 whether one of the two signal variables is below a lower, permissible limit value (U G1 ). If this is the case, a malfunction of the measuring device due to a possible interruption in the positive supply voltage line, a short circuit to ground or an interruption of the signal lines is recognized in step 310 and the program is ended. If both signal quantities are above their lower permissible limit value (U G1 ) in accordance with the query in step 308, a check is carried out in the further steps as to whether the two signal quantities lie in a predetermined signal range with respect to one another.
  • the signal value of the sensor 100 operating the control function can also be checked before the query 306, an error reaction occurring after step 304 in the event of an error that the minimum limit value U G1 is undershot.
  • the query 308 then only relates to the monitoring sensor 102.
  • step 312 the sum of the two signal values is examined to determine whether they are above a tolerance range formed around the upper maximum limit value (U G2 ). If this is the case, the method continues to step 310, a malfunction of the measuring device is recognized and, if necessary, an emergency operation function is initiated. This type of error can result from shunts or non-linearities. In the other case, this sum is checked in query step 314 to determine whether it lies below this tolerance band. If this is the case, the reaction described above takes place after step 310, while in the other case the functionality of the measuring device is determined and the system is operated in normal operation in accordance with step 316. The program section is then ended and restarted if necessary.
  • U G2 the upper maximum limit value
  • Steps 312 and 314 can also be carried out in such a way that one of the two signal values is checked to determine whether it is above or below a tolerance range formed by another signal value.
  • step 318 If it is recognized in query step 306 that the signal sizes of both sensors are below the idle threshold, it is checked in step 318 whether the signal value of the sensor 100 performing the control function is below the permissible minimum limit value (U G1 ).
  • step 304 the procedure is the same as in step 304, while in the opposite case in the query step 320 the signal value of the monitoring sensor 102 is checked to determine whether the one generated by it Signal size is below the minimum limit 210 Umin. In the event of such a result, an interruption in the signal line and / or an interruption in the positive supply voltage line of the sensor 102 is inferred and step 304 is followed.
  • An opposite result of the query step 320 leads to the query after step 322 whether the setpoint value generated by the control element is below an idle value increased by a tolerance value, ie whether the measuring device is still in the idle or near idle range. If this is not the case, a malfunction check of the measuring device must be carried out according to steps 312 and 314.
  • step 324 the query is made in step 324, with which it is checked whether the signal value of the sensor 102 is below the upper limit of the tolerance band formed around the signal value of the sensor 100.
  • step 304 if the limit value is exceeded by the signal value, an error reaction occurs, for example due to a possible short circuit of the sensor 102 to plus, with the opposite result, normal operation of the measuring device can be assumed, despite a possibly existing increased contact resistance between the grinder tap and the resistance track.
  • This second type of monitoring checks whether the signal values of the sensors individually and / or to one another lie outside a second value range. Since this range of values is larger in terms of amount, the second type of monitoring is less sensitive than the first.
  • the measure described above prevents an error reaction due to impaired, incomplete signal transmission or generation.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

On propose un système de commande et/ou de régulation d'un moteur à combustion interne dépendant au moins de valeurs de signal qui représentent la position d'un élément au moins influençant la puissance du moteur à combustion interne et qui sont calculés par un dispositif de mesure pour le calcul de cette position, système avec lequel ce dispositif de mesure comporte plusieurs capteurs mesurant chacun la position de ce même élément et avec lequel, sur la base des valeurs de signal produites par les capteurs, on procède à une première détection de défauts de fonctionnement en déterminant si les valeurs de signal, les unes par rapport aux autres, se situent dans une première déterminée et on procède, dans des domaines partiels déterminés, en particulier dans une position de chaque élément correspondant à un fonctionnement à vide ou à un domaine proche du fonctionnement à vide, à un deuxième contrôle des défauts de fonctionnement pour déterminer si les signaux, individuellement et/ou les uns par rapport aux autres, se situent dans une deuxième plage de valeurs déterminée. Le deuxième contrôle des défauts de fonctionnement est moins sensible que le premier.

Claims (10)

  1. Système pour commander et/ou régler un moteur à combustion interne au moins en fonction de valeurs de signaux, qui représentent un paramètre de fonctionnement du moteur à combustion interne et/ou du véhicule à moteur, système dans lequel on prévoit au moins un premier et un second détecteur (16, 18, 100, 102), qui détectent respectivement des valeurs de signaux représentant le paramètre de fonctionnement et dans lequel des disfonctionnements sont dérivés en partant de valeurs de signaux et ce contrôle de disfonctionnement a lieu à l'intérieur d'au moins une zone partielle prédéfinie de la zone des signaux du paramètre de fonctionnement avec une sensibilité plus faible qu'en dehors de cette zone, système caractérisé en ce que,
    - on détecte un défaut, quand les valeurs de signaux du premier détecteur dépassent une première ou une seconde ligne de valeurs limites dérivée des valeurs de signaux du deuxième détecteur,
    - on détecte dans au moins l'une des zones partielles prédéfinies un disfonctionnement, quand les valeurs de signaux du premier détecteur dépassent la première ligne de valeurs limites, tandis qu'on ne détecte pas de défaut, quand ses valeurs de signaux dépassent la seconde ligne de valeurs limites.
  2. Système selon la revendication 1, caractérisé en ce que le paramètre de fonctionnement représente la position d'au moins un élément qui influence la puissance du moteur à combustion interne, en particulier d'un composant de réglage de la puissance et/ou d'un élément de commande pouvant être actionné par le chauffeur.
  3. Système selon l'une des revendications précédentes, caractérisé en ce que,
    - sur la base des valeurs de signaux produites par les détecteurs, on exécute un premier contrôle de disfonctionnement pour savoir si les valeurs de signaux se trouvent l'une et l'autre en dehors d'une première zone de valeur prédéfinie,
    - dans des zones partielles prédéfinies, en particulier dans la zone de ralenti ou la zone proche du ralenti de la position de l'élément correspondant, a lieu un second contrôle de disfonctionnement pour savoir si les valeurs de signaux se trouvent individuellement et/ou l'une et l'autre en dehors d'une seconde zone prédéfinie de valeurs.
  4. Système selon l'une des revendications précédentes, caractérisé en ce qu'il s'agit dans le cas des détecteurs, de potentiomètres.
  5. Système selon l'une des revendications précédentes, caractérisé en ce que les zones partielles prédéfinies, sont déterminées par une transmission ou une détection de signaux altérée et/ou incomplète.
  6. Système selon la revendication 2, caractérisé en ce que ces zones partielles sont délimitées par des valeurs de seuil prédéfinies pour la position du et/ou des éléments qui déterminent la puissance.
  7. Système selon l'une des revendications 3 à 6, caractérisé en ce que la seconde zone de valeur est limitée par une première ligne supérieure limite, dérivée des valeurs de signaux d'au moins l'un des détecteurs et par une seconde ligne limite inférieure prédéterminée, dont le montant est plus petit que celui d'une seconde ligne limite inférieure de la première zone de valeurs.
  8. Système selon la revendication 7, caractérisé en ce que la seconde ligne limite, inférieure de la seconde zone de valeurs est déterminée par un circuit associé au détecteur correspondant.
  9. Système selon la revendication 8, caractérisé en ce que le circuit représente des résistances qui forment un diviseur de tension à l'aide duquel une valeur de signal prédéterminée peut être appliquée aux valeurs de signaux du détecteur correspondant.
  10. Système selon la revendication 2, caractérisé en ce que l'on exécute les séquences suivantes :
    - introduction d'une réaction de défaut, quand l'une des valeurs de signaux se trouve au-dessus 'une limite supérieure,
    - contrôle pour savoir si les valeurs de signaux de tous les détecteurs se trouvent dans une zone partielle prédéfinie,
    - introduction d'une réaction de défaut, quand les valeurs de signaux des détecteurs se trouvent en dehors de cette zone partielle et quand au moins l'une des valeurs de signaux se trouve en dessous d'une limite inférieure de zone de signaux, ou quand l'une des valeurs de signaux se trouve au moins en dehors d'une bande de tolérance formée autour d'une valeur de signal,
    - introduction d'une réaction de défaut, quand les valeurs de signaux des détecteurs se trouvent à l'intérieur de ces zones partielles et en outre quand l'une au moins des valeurs de signaux servant à contrôler les autres détecteurs se trouve en dessous d'une ligne limite inférieure prédéterminée, qui est en dessous de la limite inférieure de la zone de signaux ou quand cette valeur de signal se trouve au-dessus des valeurs limites supérieures de la bande de tolérance.
EP91902506A 1990-02-10 1991-01-19 Systeme de commande et/ou de regulation d'un moteur a combustion interne Expired - Lifetime EP0468007B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4004083 1990-02-10
DE4004083A DE4004083A1 (de) 1990-02-10 1990-02-10 System zur steuerung und/oder regelung einer brennkraftmaschine
PCT/DE1991/000042 WO1991012423A1 (fr) 1990-02-10 1991-01-19 Systeme de commande et/ou de regulation d'un moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP0468007A1 EP0468007A1 (fr) 1992-01-29
EP0468007B1 true EP0468007B1 (fr) 1995-10-11

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EP91902506A Expired - Lifetime EP0468007B1 (fr) 1990-02-10 1991-01-19 Systeme de commande et/ou de regulation d'un moteur a combustion interne

Country Status (6)

Country Link
US (1) US5224453A (fr)
EP (1) EP0468007B1 (fr)
JP (1) JP2854709B2 (fr)
DE (2) DE4004083A1 (fr)
ES (1) ES2079640T3 (fr)
WO (1) WO1991012423A1 (fr)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4015415B4 (de) * 1990-05-14 2004-04-29 Robert Bosch Gmbh Vorrichtung zur Erfassung eines veränderlichen Betriebsparameters
DE4038337C2 (de) * 1990-12-01 1999-12-02 Bosch Gmbh Robert Verfahren zur Steuerung und/oder Regelung einer Brennkraftmaschine
DE4235880C2 (de) * 1992-10-23 2003-07-17 Bosch Gmbh Robert Verfahren und Vorrichtung zur Erfassung einer veränderlichen Größe bei Fahrzeugen
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DE59106651D1 (de) 1995-11-16
DE4004083A1 (de) 1991-08-14
WO1991012423A1 (fr) 1991-08-22
EP0468007A1 (fr) 1992-01-29
JPH04505495A (ja) 1992-09-24
ES2079640T3 (es) 1996-01-16
US5224453A (en) 1993-07-06
JP2854709B2 (ja) 1999-02-03

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