EP0457033B1 - Dispositif pour détecter un paramètre de fonctionnement variable - Google Patents

Dispositif pour détecter un paramètre de fonctionnement variable Download PDF

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Publication number
EP0457033B1
EP0457033B1 EP91105855A EP91105855A EP0457033B1 EP 0457033 B1 EP0457033 B1 EP 0457033B1 EP 91105855 A EP91105855 A EP 91105855A EP 91105855 A EP91105855 A EP 91105855A EP 0457033 B1 EP0457033 B1 EP 0457033B1
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EP
European Patent Office
Prior art keywords
actuation
degree
measuring
measuring arrangements
quantities
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
Application number
EP91105855A
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German (de)
English (en)
Other versions
EP0457033A3 (en
EP0457033A2 (fr
Inventor
Rainer Dipl.-Ing. Norgauer
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Publication date
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Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0457033A2 publication Critical patent/EP0457033A2/fr
Publication of EP0457033A3 publication Critical patent/EP0457033A3/de
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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
    • F02D41/24—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
    • F02D11/106—Detection of demand or actuation
    • 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
    • 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 device according to the preamble of the claim 1.
  • Such a device for Angle measurement in internal combustion engines with at least two measuring devices measuring the operating parameter is known from EP-A 118 247.
  • the at least two Measuring devices each generate signal quantities that are to be detected Represent operating parameters.
  • For one of the measuring devices is a characteristic that is linearly dependent on the parameter to be recorded given, while another measuring device this linear Shows characteristic only in selected signal size ranges and no signal size is generated outside of these ranges.
  • This Signal size ranges are with a view to function monitoring the measuring devices and / or the system through plausibility comparisons the signal sizes of the measuring devices.
  • the measuring devices have a common power supply irregularities, especially fluctuations in amounts, in the power supply to incorrect measurement results and thus malfunction of the internal combustion engine and / or the Measuring systems connected system outlined by the above Plausibility monitoring are not recognizable.
  • FR-A 2 569 231 describes the use of such a device for position detection in an electronic engine power control.
  • the disadvantages outlined above due to irregularities in the voltage supply of the position detection elements of particular Disadvantage, as a function of the signal sizes of the position detection elements the performance of the internal combustion engines is influenced.
  • two potentiometers are used Position detection used, both of which are the position generate representative output signal. About the design the potentiometer, especially via the characteristic curves, no statements are made.
  • the unpublished WO-A 91/12423 shows a device for recording the degree of actuation of an accelerator pedal or a throttle valve of an internal combustion engine.
  • the essentially linear characteristics cover the entire value range the degree of actuation, but reject within the framework the tolerances have the same slope values.
  • FR-A 2 570 177 shows a detection device for detection the degree of actuation of a throttle valve of an internal combustion engine.
  • the essentially linear characteristics of each Measuring devices have different slope values on, but only form in adjacent areas Signals, so that not the entire degree of actuation of the Throttle valve is covered.
  • the procedure according to the invention improves operational safety a device for detecting the degree of actuation and of the control system provided with this device in the area an internal combustion engine and / or a motor vehicle.
  • Figure 1 represents the integration of the measuring devices in a motor control, in particular an electronic one Engine power control, while the figures 2 and 3 Embodiments of the device for recording an operating parameter, especially one position, in the form of multiple potentiometers show, which have a characteristic curve according to Figure 4.
  • the flow chart of Figure 5 is in connection with the Characteristic diagram according to FIG. 6 shows a possible embodiment for Detection of irregularities in the supply voltage range Detection device before.
  • the exemplary embodiment described below relates to a device for detecting the position of a performance-determining Elements of an internal combustion engine or a motor vehicle, especially in connection with an electronic engine power control system.
  • 10 is a performance-determining Element of an internal combustion engine and / or a motor vehicle. It is a power actuator (Throttle).
  • the determining factor Element 10 is via a transmission path 12 with a detection device 14 for the position of the performance-determining element connected.
  • the device 14 comprises at least two position measuring devices 16 to 18, hereinafter referred to as sensors become. Each of these sensors is coupled to the transmission path 12.
  • the sensors 16 to 18 depending on the position of the power-determining Elements 10 according to their characteristics or characteristic formed signal quantities for the position of the power-determining Elements 10 are connected via connecting lines 28 to 30 Control and regulation system 32 forwarded.
  • the connecting lines 28 to 30 connect the device 14 or the sensors 16 to 18 with the control system 32.
  • the connecting lines 28 to 30 are in the control system 32 on input circuits 34 to 36 out. These consist of at least A / D converters Generation of digital position values.
  • Via lines 40, for example are built in the form of a data bus, the digital Values are output to a computer element 42 in which the Control function of the electronic engine power control system and the functional check described below the device 14 are executed.
  • the computing element 42 is over a line 44, an output stage 46 and a control line 48 with connected to the power actuator 10.
  • the device 15 assigned to the accelerator pedal is analogous via lines 31, the number of which corresponds to the number of sensors the device 15 is predetermined, on input circuits 37 of the Control and regulation system 32 performed, the outputs of which are mentioned above Form lines 40.
  • the generated by the individual sensors, the position of the assigned to them Signal quantities representing elements are determined by the Lines 28 to 30 and 31 of the devices 14 and 15 to the Control system issued for further processing.
  • the control system regulates the position of the motor power of the power actuator based on the position values of performance-determining elements 10 and 11.
  • the Setpoint specified by element 11 with the value taken from element 10 Actual value compared and the power actuator for reduction the setpoint-actual value difference is controlled via line 48.
  • the exemplary embodiment serves at least one of the sensor signal variables Monitoring the function of the other sensors, the Evaluation of the signal sizes for monitoring purposes in control and Control system, in particular in the computer element 42, is performed.
  • the computer element 42 has further operating parameters of corresponding measuring devices, not shown in FIG. 1 supplied, which are further processed for control and regulation purposes will.
  • the control system 32 is known to include further inputs and outputs that are used to perform the engine power control functions, Idle speed control, fuel metering, ignition timing, etc. are necessary and in Figure 1 for reasons of clarity are not shown.
  • device 14 or 15 essentially comprises two Sensors 16 and 18.
  • the sensor 16 consists of a resistance track 100 and a grinder 102, which is fixed to the transmission path 12 connected is. Furthermore, the resistance track 100 is via the connecting line 20 to the positive pole 24 and via the connecting line 22 connected to the negative pole 26 of the supply voltage.
  • the grinder 102 of the sensor 16 is connected to a line 104, which is led to a resistor 106.
  • connection point 108 to the connecting line 28 a against the pole 26 of the supply voltage Resistor 110 connected.
  • the line 28 leads via the Junction point 108 to the input circuit, not shown in Figure 2 34.
  • the second sensor 18 comprises a resistance track 112 and a grinder connected to the transmission path 12 114.
  • Resistor path 112 is connected to line via line 116 20 connected to the positive pole 24 of the supply voltage is led.
  • the second end of resistance path 112 is over the Line 118 to line 22 of the negative pole 26 of the supply voltage connected.
  • the grinder 114 is via the line 120 and resistor 122 connected to line 30 which via node 124, at which a resistor 126 against the Pole 26 of the supply voltage is connected to that in FIG. 2 not shown input circuit 36 leads.
  • the relationship between the signal magnitude taken from the grinders 102 and 114 and the position of the power-determining element 10, which is passed on via the transmission path 12, is linear, at least outside the extreme value range.
  • the signal size results directly from the position of the wipers 102 and 114 on the basis of the voltage divider formed by the wiper on the resistance tracks 100 and 112, respectively. Due to the differently selected length of the resistance tracks 100 and 112, however, as a result of the different divider ratios for the positions of the grinders 102 and 114, the slopes or characteristics of the sensors 16 and 18 differ from one another.
  • the slope of the characteristic curve is the longer resistance track generally smaller than that of the sensor with the shorter resistance track. This relationship is shown in FIG. 4.
  • the horizontal axis describes the operating parameter of the internal combustion engine or the motor vehicle to be measured, in the case of the exemplary embodiment the position of the power-determining element, which in its value range lies between a minimum (min) and a maximum (max) value, which for example each corresponds to the stops of the performance-determining element can be varied.
  • the signal quantities taken from the grinders 102 and 114 are plotted on the vertical axis. These signal variables move within a signal range between a minimum signal variable (min 1 , 2 ) assigned to the minimum value of the operating parameter and a maximum signal variable (max 1/2 ) assigned to the maximum value of the operating parameter.
  • FIG. 4 shows that assigned to the sensor 18 Characteristic curve 200 and that of the sensor 16, which is opposite to the one Resistance path 112 longer resistance path 100 is equipped, assigned characteristic curve 202 is shown. Both characteristic curves point from each other different slopes. The range of values of the signal size of sensor 16 is accordingly changed compared to sensor 18, reduced in Figure 4.
  • FIG. 3 shows resistance paths 300 of sensors 16 and 302 In contrast to FIG. 2, the sensor 18 have the same lengths.
  • a resistive element in particular a Resistor 304 inserted.
  • this measure leads to the fact that for each Position of the wiper, the voltage drop forming the signal size between grinder and negative pole or the voltage drop from positive pole of the supply voltage to the grinders in terms of amount different, i.e. for those with the resistive element 304 provided resistance path is smaller than for the other Tracks.
  • a characteristic curve behavior according to FIG. 4 is in this way to reach. It should be noted that in Figure 3 the sensor 18 associated characteristic a shape according to the characteristic 202 in FIG. 4, while the characteristic assigned to the sensor 16 has the shape of the characteristic curve 200.
  • Control and regulation system performed position control of a power actuator depending on the sensor, which has a characteristic is assigned according to 200.
  • the other sensor, with a characteristic lower slope, is used to monitor the function of this sensor.
  • Irregularities in the supply voltage of the sensors in particular those that change the amount of the signal range of the sensor signal sizes result in a shift of the Characteristic curves 200 and 202, as shown by dashed lines in FIG. 4, for example for a magnification of the signal ranges based on the Characteristic curves 200a and 202a is shown.
  • a change in the supply voltage for example as a result of Voltage dips and / or drift phenomena compared to the normal state according to characteristic curve 310 leads to a shift in the characteristic curve in the diagram of Figure 5.
  • the supply voltage increases, there is a shift the characteristic curve in such a way that the characteristic points with different size in the diagram of Figure 5 with a Tendency to be shifted to the right.
  • the signal quantities (U i, j ) of the individual sensors are read in according to step 400.
  • the signal size (U jt ) of one or more sensors is determined as a function of the signal size (U i ) of the or the other sensors in each case by means of a predetermined map representing the normal state according to FIG. 5 (310).
  • this or these theoretical signal quantities (U jt ) read out from the characteristic diagram for the normal state are compared with the actually recorded signal quantities (U j ) of the sensors concerned and queried as to whether the theoretical and actual values are related to one another in a predetermined tolerance band are located. For example, this can be done by taking the amount of the difference between the theoretical and actual values and querying whether the difference exceeds a predetermined threshold. If the latter is the case, it is concluded that the sensors are malfunctioning due to irregularities in the supply voltage range (step 406), while if the result of the query in step 404 is negative, the sensors are rated as functional. After steps 408, or in the event of an error 406, the program part according to FIG. 3 is ended and, if necessary, started again.
  • the inventive Procedure for the degree of actuation of an accelerator pedal or with a throttle valve of the motor vehicle several, the degree of actuation measuring devices, the have a common power supply, a review irregularities in the area of this common power supply at every operating point, during the operating cycle of the Internal combustion engine is made possible.

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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)

Claims (5)

  1. Dispositif servant à détecter le degré d'actionnement d'une pédale d'accélérateur ou d'un clapet d'étranglement d'un moteur à combustion interne, avec au moins deux systèmes de mesure qui détectent ce degré d'actionnement, systèmes de mesure qui sont réalisés sous la forme de potentiomètres avec une alimentation de tension commune, et qui produisent au moins deux grandeurs de signaux représentant le degré d'actionnement selon les indications de courbes caractéristiques prédéfinies,
    caractérisé en ce que
    ces courbes caractéristiques sont sensiblement linéaires du moins en dehors des zones d'extrémité du degré d'actionnement au delà de la zone de valeurs du degré d'actionnement, chacune des courbes caractéristiques sensiblement linéaire recouvrant la totalité de la zone de valeurs du degré d'actionnement, la pente de la courbe caractéristique de l'un au moins des systèmes de mesure présentant une valeur qui s'écarte, quant à son montant, de la valeur ou des autres valeurs de pente de l'autre ou des autres systèmes de mesure, la différence entre les grandeurs de signaux des systèmes de mesure étant plus grande, quant à son montant, d'une valeur extrême du degré d'actionnement à l'autre.
  2. Dispositif selon la revendication 1,
    caractérisé en ce qu'
    on insère un élément affecté d'une résistance dans la ligne de tension d'alimentation d'au moins l'un des systèmes de mesure.
  3. Dispositif selon la revendication 1,
    caractérisé en ce que
    dans le cas de systèmes de mesure réalisés sous la forme de potentiomètres, la longueur de la piste de résistance d'au moins l'un des systèmes de mesure s'écarte de la longueur de l'autre ou des autres systèmes de mesure.
  4. Dispositif selon la revendication 1,
    caractérisé en ce qu'
    on prévoit des moyens qui déterminent les fluctuations de la tension d'alimentation des systèmes de mesure, quand les grandeurs de signaux des systèmes de mesure ayant des valeurs de pentes qui s'écartent les unes des autres, s'écartent d'une façon inacceptable les unes des autres selon l'indication d'une bande de tolérance prédéfinie.
  5. Dispositif selon la revendication 4,
    caractérisé en ce qu'
    on prévoit un élément d'ordinateur (42) qui, pour déterminer des fluctuations de la tension d'alimentation des systèmes de mesure, accomplit les séquences suivantes :
    détection des grandeurs des signaux des systèmes de mesure,
    détermination d'une ou plusieurs grandeurs de signaux sur la base respectivement de l'autre au moyen d'une courbe caractéristique représentant un état normal,
    comparaison des grandeurs déterminées avec les grandeurs détectées sur une bande de tolérance prédéfinie,
    constatation de fluctuations lorsque les grandeurs s'écartent de la bande de tolérance.
EP91105855A 1990-05-14 1991-04-12 Dispositif pour détecter un paramètre de fonctionnement variable Expired - Lifetime EP0457033B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4015415 1990-05-14
DE4015415A DE4015415B4 (de) 1990-05-14 1990-05-14 Vorrichtung zur Erfassung eines veränderlichen Betriebsparameters

Publications (3)

Publication Number Publication Date
EP0457033A2 EP0457033A2 (fr) 1991-11-21
EP0457033A3 EP0457033A3 (en) 1993-03-03
EP0457033B1 true EP0457033B1 (fr) 1999-07-07

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EP91105855A Expired - Lifetime EP0457033B1 (fr) 1990-05-14 1991-04-12 Dispositif pour détecter un paramètre de fonctionnement variable

Country Status (4)

Country Link
US (1) US5136880A (fr)
EP (1) EP0457033B1 (fr)
JP (1) JP3386824B2 (fr)
DE (2) DE4015415B4 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10222468A1 (de) * 2002-05-22 2003-12-11 A B Elektronik Gmbh Vorrichtung zur Erzeugung von Ausgangsspannungen
DE10222467A1 (de) * 2002-05-22 2003-12-11 A B Elektronik Gmbh GMR-Drehwinkelsensor
US6948383B2 (en) 2002-06-12 2005-09-27 Ab Eletronik Gmbh Wide angle rotation angle sensor

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DE4235880C2 (de) * 1992-10-23 2003-07-17 Bosch Gmbh Robert Verfahren und Vorrichtung zur Erfassung einer veränderlichen Größe bei Fahrzeugen
DE4322472B4 (de) * 1993-07-06 2006-03-09 Siemens Ag Schaltungsanordnung zur Überwachung eines Stellungsgebers
DE4325584C2 (de) * 1993-07-30 1996-08-22 Giehl Klaus Ulrich Vorrichtung zur Rückhaltung von Schwimmstoffen an einer Überfallschwelle einer Regenentlastungsanlage
DE4327455A1 (de) * 1993-08-16 1995-02-23 Hella Kg Hueck & Co System zur Ansteuerung eines Stellgliedes zur Einstellung der Luftzufuhr eines Kraftfahrzeugmotors
US5622053A (en) * 1994-09-30 1997-04-22 Cooper Cameron Corporation Turbocharged natural gas engine control system
JP3296222B2 (ja) * 1996-12-19 2002-06-24 トヨタ自動車株式会社 スロットル制御装置
DE19821682B4 (de) * 1997-05-26 2010-01-07 Volkswagen Ag Verfahren und Vorrichtung zur Funktionsüberwachung eines Gebers
JP3116868B2 (ja) * 1997-07-23 2000-12-11 トヨタ自動車株式会社 リニアポジションセンサの異常検出方法
EP1105698B1 (fr) * 1998-08-12 2006-05-24 Siemens Aktiengesellschaft Procede pour determiner une position en fonction d'un signal de mesure emis par un capteur de position
DE19847337A1 (de) 1998-10-14 2000-04-20 Decoufle Sarl Vorrichtung zum Verbinden von axial fluchtenden Zigaretten-Filterstopfen-Gruppen
JP3491587B2 (ja) * 1999-12-21 2004-01-26 株式会社デンソー 回転角度検出センサのフェイルモード調整方法
DE10006958C2 (de) * 2000-02-16 2001-12-06 Siemens Ag Verfahren zur Diagnose eines doppelpotentiometrischen Gebers
US6237564B1 (en) 2000-02-25 2001-05-29 Ford Global Technologies, Inc. Electronic throttle control system
US6463797B2 (en) 2000-02-25 2002-10-15 Ford Global Technologies, Inc. Electronic throttle system
EP1136681A3 (fr) 2000-03-24 2003-08-06 Ford Global Technologies, Inc. Système de commande électronique de papillon
US6691679B2 (en) 2001-11-29 2004-02-17 Ford Global Technologies, Llc System and method for controlling an operational position of a throttle valve in an engine
US6927566B2 (en) 2002-05-22 2005-08-09 Ab Eletronik Gmbh Device for generating output voltages
JP2004324720A (ja) * 2003-04-23 2004-11-18 Aisin Aw Co Ltd 回転角度検出センサーの故障検出装置
US7570046B2 (en) * 2003-10-14 2009-08-04 Borgwarner Inc. Single sensing multiple output system

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DE3742592A1 (de) * 1987-12-16 1989-06-29 Pierburg Gmbh Verfahren zur tarierung eines stellungsrueckmelde-signalwertes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10222468A1 (de) * 2002-05-22 2003-12-11 A B Elektronik Gmbh Vorrichtung zur Erzeugung von Ausgangsspannungen
DE10222467A1 (de) * 2002-05-22 2003-12-11 A B Elektronik Gmbh GMR-Drehwinkelsensor
US6948383B2 (en) 2002-06-12 2005-09-27 Ab Eletronik Gmbh Wide angle rotation angle sensor

Also Published As

Publication number Publication date
DE4015415A1 (de) 1991-11-21
JP3386824B2 (ja) 2003-03-17
DE59109138D1 (de) 1999-08-12
EP0457033A3 (en) 1993-03-03
US5136880A (en) 1992-08-11
EP0457033A2 (fr) 1991-11-21
DE4015415B4 (de) 2004-04-29
JPH04228853A (ja) 1992-08-18

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