EP2588734A1 - Procédé de détermination d'une courbe caractéristique de correction - Google Patents

Procédé de détermination d'une courbe caractéristique de correction

Info

Publication number
EP2588734A1
EP2588734A1 EP11729956.0A EP11729956A EP2588734A1 EP 2588734 A1 EP2588734 A1 EP 2588734A1 EP 11729956 A EP11729956 A EP 11729956A EP 2588734 A1 EP2588734 A1 EP 2588734A1
Authority
EP
European Patent Office
Prior art keywords
characteristic curve
characteristic
correction
injection system
deviation
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.)
Withdrawn
Application number
EP11729956.0A
Other languages
German (de)
English (en)
Inventor
Guenter Veit
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2588734A1 publication Critical patent/EP2588734A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
    • G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
    • G05B13/0265—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric the criterion being a learning criterion
    • 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
    • F02D41/1402—Adaptive control
    • 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
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2409—Addressing techniques specially adapted therefor
    • F02D41/2422—Selective use of one or more tables
    • 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
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2425—Particular ways of programming the data
    • F02D41/2429—Methods of calibrating or learning
    • F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
    • F02D41/2464—Characteristics of actuators
    • 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
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2425—Particular ways of programming the data
    • F02D41/2429—Methods of calibrating or learning
    • F02D41/2477—Methods of calibrating or learning characterised by the method used for learning
    • 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
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • F02D41/3836—Controlling the fuel pressure
    • F02D41/3845—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
    • 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
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • F02D41/3836—Controlling the fuel pressure
    • F02D41/3845—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
    • F02D41/3854—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped with elements in the low pressure part, e.g. low pressure pump
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
    • G06N20/00—Machine learning
    • 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
    • F02D2041/141—Introducing closed-loop corrections characterised by the control or regulation method using a feed-forward control element
    • 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
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0602—Fuel pressure
    • 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
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0602—Fuel pressure
    • F02D2200/0604—Estimation of fuel pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/04—Fuel pressure pulsation in common rails
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/31—Control of the fuel pressure
    • 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
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2425—Particular ways of programming the data
    • F02D41/2429—Methods of calibrating or learning
    • F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
    • F02D41/2464—Characteristics of actuators
    • F02D41/2467—Characteristics of actuators for injectors
    • 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
    • F02D41/30—Controlling fuel injection
    • F02D41/3082—Control of electrical fuel pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails

Definitions

  • the invention relates to a method and an arrangement for determining a correction characteristic.
  • So-called self-learning functions are designed to detect and store the properties and / or the tolerance position and the drift over the service life of a component of the injection system during operation of a common-rail injection system, and to calculate corresponding correction values, for example the document DE 10 2004 006 694 A1 is disclosed.
  • devices for controlling the fuel pressure which have no metering unit (ZME) and in which a fuel pump (EKP) is used directly as an actuator for the rail pressure control.
  • EKP fuel pump
  • In these devices results from the interaction of various components, such as the EKP, the high pressure pump, the EDC and the lines as a characteristic curve for the high pressure control, a so-called pump curve.
  • the document DE 10 2006 000 238 A1 describes a control device for a fuel supply system having a common rail memory for fuel, which is supplied to an engine by an injection.
  • a learning means provided here stores the characteristic deviations calculated by first and second calculating means in a backup memory as learning values.
  • a method for controlling an internal combustion engine is described in the publication DE 10 2007 036 684 A1. In this case, the adaptation of a state of a fuel vapor purge system of the internal combustion engine and an adaptive learning of a characteristic of the fuel supply system is provided.
  • a routine may include adaptive learning of injector characteristics, fuel pump characteristics, or air metering errors.
  • a control device also described includes a learning device that controls a metering valve control value that is supplied to an intake metering valve of the common rail fuel injection system to control the opening degree of the intake metering valve.
  • the learning means controls the metering valve control value such that the opening degree of the inlet metering valve progressively increases from a preset value smaller than a maximum injection rate realization limit realizing the maximum discharge rate of the high-pressure pump.
  • the learning means obtains the current metering valve control value supplied to the inlet metering valve as a maximum discharge rate control value, the learning means learning that the high pressure pump reaches the maximum discharge rate at the maximum discharge rate control value.
  • the invention provides a learning function for adapting a characteristic curve of at least one component of an injection system, for example an adaptive measurement curve for controlling a fuel pressure.
  • a rail pressure control via the fuel pump (EKP) is typically possible.
  • the learning function at least one deviation of a currently measured actual variable from a desired characteristic can be determined.
  • a learning function is used which captures as much of the tolerances as possible of different components of an injection system and thus the sum tolerance of these components.
  • the applied learning function is designed to detect the deviations of the pump characteristic curve to a nominal characteristic curve or a nominal characteristic curve, to store and to determine correction values.
  • the determined correction characteristic encompasses the sum tolerance of the components of the injection system involved. Since the deviations of the individual components are different in different operating conditions, the learning process only detects the part of the deviations that correlate with the operating parameters considered in the learning process. There remains only a residual deviation of the injection system exist, which can not be corrected by the existing learning function. Nevertheless, compared to a device and / or injection system without learning function a significant increase in accuracy is achieved and the robustness of the injection system against tolerances of individual components and drifts improved.
  • an adaptive metering control (AMC) learning algorithm is used to control the fuel pressure and is transmitted to a correction and / or learning characteristic of the fuel pump, and thus a pump characteristic and / or a pilot control map ,
  • Correlation curves or maps that are stored in a module of the example can be corrected.
  • the arrangement according to the invention is designed to carry out all the steps of the presented method. In doing so, individual steps can do this
  • Figure 1 shows a diagram of a pressure of the fuel in a storage injection system.
  • FIG. 2 shows a diagram of a first embodiment of the method according to the invention.
  • FIG. 3 shows a diagram of a second embodiment of the method according to the invention.
  • Figure 4 shows a schematic representation of an example of a storage injection system and a first embodiment of an inventive arrangement.
  • FIG. 5 shows a diagram of a state machine in a third embodiment of the method according to the invention.
  • FIG. 6 shows a diagram of a fourth embodiment of the method according to the invention.
  • FIG. 1 is along an ordinate 2, a pressure of a fuel in an injection system designed as a fuel injection system and thus the rail pressure of a common rail system over an abscissa 4 plotted for the time.
  • a first curve 6 for a target value of the pressure a second curve 8 for an overshoot of a fast-regulated pressure and a third curve 10 for a slowly controlled pressure are shown.
  • the diagram of Figure 1 shows a fourth curve 14, which results in application of an embodiment of the method according to the invention for the pressure with an adapted correction characteristic of a fuel pump for correcting a pump characteristic of the injection system.
  • Figure 1 shows that with the fourth curve 14, the best approximation to the first curve 6 is achieved for the desired value of the pressure.
  • stationary deviations are learned to control the pressure of the fuel.
  • a PIDT controller 20 is used.
  • a current component at a steady state setpoint is used as a measure of the deviation of the fuel pump and / or metering unit from a nominal value or a setpoint value of an operating parameter.
  • at least two concepts for learning the stationary current component can be used.
  • a correction intervention is made on a characteristic curve of the fuel pump and thus of the pump characteristic curve (PKL).
  • FIG. 3 In a second embodiment of the method (FIG. 3), the correction intervention is carried out for a pilot control map (VST).
  • VST pilot control map
  • the diagram of Figure 2 shows a flow to the first embodiment of a method according to the invention, whereas the diagram of Figure 3 describes the second embodiment of the method according to the invention. Both diagrams have the following common components: a first one
  • Pre-control device 16 and a second pre-control device 18, a PIDT controller 20, an inverted pump curve 22, and a current control device 24 From the pre-control devices 16, 18 a Vorêtken nfeld is provided.
  • the actual value 31 of the pressure from the pressure sensor 28 is also supplied to the PIDTr controller 20.
  • the PIDTrRegler 20, the inverted pump curve 22, the control device 24 and the accumulator injection system 26 form a control loop.
  • the diagram of Figure 2 shows an associated correction characteristic 29 for correcting the pump characteristic curve 22.
  • this associated correction curve 29 for the pump in the diagram of Figure 2 is arranged in the first embodiment of the inventive method within the control loop, so that the correction characteristic 29 is determined within the control loop.
  • a correction of the curve formed as a pump characteristic curve 22 is carried out with the correction characteristic 29 within the control loop.
  • a correction characteristic curve 33 for the pilot control map is arranged outside the control loop, so that the correction characteristic curve 33 is provided outside the control loop.
  • the pre-control map is corrected here with the correction characteristic 33 outside the control loop.
  • the pilot control map (VST) is provided by the pre-control devices 16, 18.
  • the first precontrol device 16 as operating parameter, is setpoint value 30 for a pressure of Fuel and a value for a cooling temperature 32 is supplied.
  • the second pre-control device 18 is supplied as operating parameters, a speed 34 of the internal combustion engine and a value for a volume flow 36 of the fuel within the injection system 26.
  • a gradient monitoring is performed for the correction characteristics 29, 33.
  • a monotony of the pump characteristic 22 to be corrected therewith or of the pilot control map to be corrected can be ensured.
  • Pressure can be improved while maintaining permissible pressure overshoot.
  • the method can also be used for different low-pressure circuits of the injection system 26.
  • a pressure control behavior with conventional tolerances of components of the injection system 26 can be improved. It is also possible to extend a life of the injection system 26 for overshoots for high pressures within the injection system 26.
  • FIG. 4 shows a schematic representation of an injection system 300 designed as a storage injection system for injecting fuel into an internal combustion engine according to the common rail or accumulator injection method.
  • Injection 300 includes as component a reservoir 302 for the fuel, a fuel pump 304 and thus a pump for conveying fuel from the reservoir 302, and a high pressure pump 308.
  • This high pressure pump 308 is adapted to build up a pressure of the fuel within a high-pressure accumulator 310 and to maintain.
  • fuel is injected from the fuel reservoir 310 into combustion chambers of the internal combustion engine.
  • the injection system 300 includes a rail pressure sensor 312.
  • the said components of the injection system are also connected to each other via lines 315, which are also designed as components of the injection system 300.
  • An inventive arrangement 316 in FIG. 4 here comprises two modules 318, 320, which are designed as components of a control device 322.
  • the control unit 322 is here also designed to monitor and / or control and thus to control and / or regulate functions of the individual components of the injection system 300 for an operation of the injection system 300 independently of a performance of the method according to the invention.
  • the first module 318 of the arrangement 316 determines a correction characteristic for adapting a characteristic curve of the injection system 300, which comprises at least one deviation of a measured characteristic curve to a nominal characteristic curve or desired characteristic curve.
  • This correction characteristic is detected, stored and a correction value of the correction characteristic is determined.
  • the at least one deviation comprises a summation tolerance of at least two or all components of the injection system 300 and possibly a summation tolerance of the control device 322, whereby the characteristic curve is influenced.
  • the second module 320 determines the at least one deviation with a learning function. So is u. a. an adaptive control of the fuel pressure in the injection system possible.
  • the at least one deviation is stored in a memory of the arrangement 300, which is arranged in the second module 320, and the correction characteristic is determined therefrom, and at least one characteristic value of the learning function is adapted from the correction characteristic ,
  • a pump characteristic curve of a pump of the injection system and / or a pilot control map of the injection system can be adapted and / or corrected with a correction characteristic curve.
  • a function of at least one component of the injection system can be controlled taking into account the correction characteristic curve.
  • a high-pressure control by the fuel pump 304 usually takes place in the invention, an inverted pump characteristic 22 being depicted for an injection system 26, 300, which describes the result of an interaction of the components of the injection system 26, 300 ,
  • This characteristic curve which is likewise inverted and embodied as an inverted pump characteristic 22, generally shows the relationship between the delivery quantity (flow) of fuel through the high-pressure pump 308 as a function of the electric control current, the drive voltage and / or the duty cycle of the end stage of the control unit 322 of the fuel pump 304.
  • This characteristic thus reflects the sum of properties of the components involved in an injection to be made in their effect on the flow of the high pressure pump 308.
  • the control loop designed as a high-pressure control loop, for example, and the learning and / or correction function are designed such that they can be combined with values of the hydraulic system. see flow, which may be a high pressure flow, work.
  • a controller as a component of the controller 322 adjusts the flow according to the conditions of the rail pressure control based on the target and actual pressures.
  • the learning function compares this flow with a nominal value. At least one deviation from the nominal value is stored with the learning function. With a correction function from the learned correction characteristic curve 29, 33, a correction value for the flow rate is determined.
  • the precontrol and / or the input value with the learned correction characteristic 29, 33 in the pump characteristic 22 is corrected by the correction function with the correction value.
  • the correction function will not correct the drive voltage or the drive current of the fuel pump 304, but the flow at a higher system level. Since the pump characteristic curve 22 of the injection system 26, 300 represents the sum of properties of the various components of the injection system 26, 300 shown in the preceding figures, and all these components can have tolerances, it follows that the deviation of the flow from a nominal value is the effect of the sum represents these tolerances. Since the injection system 26, 300 can not recognize which is the cause of the
  • Deviation is, it may happen that the corrected by the learning and / or correction function flow does not correspond to the actual flow. This is usually a virtual flow, for which, however, taking into account the pump characteristic curve 22, it is caused that the flow signal required by the injection system 26, 300 is adjusted by the control signal of the fuel pump 304, without requiring any intervention by the regulator. This results in dynamic operation to an optimal behavior of the rail pressure, even if the components have tolerances, as indicated in the diagram of Figure 1.
  • FIG. 5 shows a relationship of states 180, 182, 184, 186, 188, resulting in a third embodiment of the method according to the invention.
  • an initialization is performed at a first state 180.
  • an interaction between the first state 180 and a second state 182, in which a start of the method is performed, is provided.
  • evaluation variables are set and monitoring limits are initialized.
  • Learned value of a learning function for determining deviations for correction characteristics is formed on the basis of the adaptation and / or the learning value.
  • an activation of a new correction characteristic takes place at a fifth state 188 and then an initialization again according to the first first state 180.
  • Variant is provided at a determination 196 that the status of the scheme does not have the monitored operation in the closed loop
  • FIG. 6 shows a diagram for illustrating a sequence of a fifth embodiment of the method according to the invention. It is in a first
  • Step 216 provided a new learning value for a learning function.
  • a distance of the learning value from a learning point is determined. If such a determination is possible, a calculation 220 of an information content of the characteristic value is undertaken in a third step 220. Thereafter, a check is made for a presence 222 of a free support point.
  • an entry 224 of the learning value 216 takes place. If the distance determination 218 should not be possible, a distance determination 226 of the new learning value 216 from a fusion point takes place. If this distance determination 226 is possible, inter-node fusion 228 is performed. If this is not possible, the new learned value 216 is discarded and a maintenance 230 of an old, already existing correction characteristic is made.
  • a size 232 of the information content of the new learning value 216 is determined. If the information content is greater than an information content of an existing support point, the support point is deleted and an entry of the new learning value 216 and at least one information content to the new learning value 216 is made in a new correction characteristic.
  • the new learning value is discarded and a maintenance 230 of the old correction characteristic is made.
  • a check 236 of a slope of the correction characteristic is made at the new learning value 216. If the slope is not correct, the new learning value 216 is discarded and maintenance 230 of the old correction characteristic is made.
  • a check 238 of a value range of the learning value 216 takes place in a further step. If the value range is correct, an updating 240 takes place for the at least one information content of the new learning value 216 Examination 238 of the range of values reveals that this is not correct, there is a limit 242 of the value range as well as a setting of an error bit and only subsequently the update 240 of the at least one information content.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Software Systems (AREA)
  • Artificial Intelligence (AREA)
  • General Physics & Mathematics (AREA)
  • Evolutionary Computation (AREA)
  • Medical Informatics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Automation & Control Theory (AREA)
  • Data Mining & Analysis (AREA)
  • Computing Systems (AREA)
  • Mathematical Physics (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un procédé de détermination d'une courbe caractéristique de correction (29) destinée à adapter une courbe caractéristique d'un système d'injection (26). Selon le procédé, la courbe caractéristique de correction (29) comprend au moins un écart d'une courbe caractéristique mesurée par rapport à une courbe caractéristique théorique. Le ou les écarts comprennent une tolérance cumulée d'au moins deux composants du système d'injection (26) qui exercent une influence sur la courbe caractéristique.
EP11729956.0A 2010-07-02 2011-06-27 Procédé de détermination d'une courbe caractéristique de correction Withdrawn EP2588734A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010030872A DE102010030872A1 (de) 2010-07-02 2010-07-02 Verfahren zum Bestimmen einer Korrekturkennlinie
PCT/EP2011/060679 WO2012000920A1 (fr) 2010-07-02 2011-06-27 Procédé de détermination d'une courbe caractéristique de correction

Publications (1)

Publication Number Publication Date
EP2588734A1 true EP2588734A1 (fr) 2013-05-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11729956.0A Withdrawn EP2588734A1 (fr) 2010-07-02 2011-06-27 Procédé de détermination d'une courbe caractéristique de correction

Country Status (5)

Country Link
US (1) US9436916B2 (fr)
EP (1) EP2588734A1 (fr)
CN (1) CN102959219B (fr)
DE (1) DE102010030872A1 (fr)
WO (1) WO2012000920A1 (fr)

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CN102959219A (zh) 2013-03-06
US20130166482A1 (en) 2013-06-27
DE102010030872A1 (de) 2012-01-05
WO2012000920A1 (fr) 2012-01-05
US9436916B2 (en) 2016-09-06

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