EP0136449B1 - Verfahren und Vorrichtung zur Adaption eines Stellglied-Kennlinienverlaufs - Google Patents

Verfahren und Vorrichtung zur Adaption eines Stellglied-Kennlinienverlaufs Download PDF

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Publication number
EP0136449B1
EP0136449B1 EP84108796A EP84108796A EP0136449B1 EP 0136449 B1 EP0136449 B1 EP 0136449B1 EP 84108796 A EP84108796 A EP 84108796A EP 84108796 A EP84108796 A EP 84108796A EP 0136449 B1 EP0136449 B1 EP 0136449B1
Authority
EP
European Patent Office
Prior art keywords
controller
slope
adaptation
offset
air
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
Application number
EP84108796A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0136449A3 (en
EP0136449A2 (de
Inventor
Cornelius Dipl.-Ing. Peter
Claus Dipl.-Ing. Ruppmann
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 EP0136449A2 publication Critical patent/EP0136449A2/de
Publication of EP0136449A3 publication Critical patent/EP0136449A3/de
Application granted granted Critical
Publication of EP0136449B1 publication Critical patent/EP0136449B1/de
Expired legal-status Critical Current

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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
    • F02D41/2406—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
    • F02D31/001—Electric control of rotation speed
    • F02D31/002—Electric control of rotation speed controlling air supply
    • F02D31/003—Electric control of rotation speed controlling air supply for idle speed control
    • F02D31/005—Electric control of rotation speed controlling air supply for idle speed control by controlling a throttle by-pass
    • 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

Definitions

  • the invention is based on a method and a device according to the type of the main claim and the first device claim.
  • a variable which is usually electrical and has a specific function profile, is supplied to any actuator by a controller that processes and also inputs certain signals from the controlled system incorporates the result achieved by adjusting the actuator into its control behavior.
  • the invention is basically suitable for adapting any actuator characteristic curves, but is used in the following for a preferred exemplary embodiment, applied to the actuator behavior in the idle charge control (LFR) for an internal combustion engine and explained in more detail, since this is also a preferred area of application for the present invention results.
  • LFR idle charge control
  • an idle speed controller is supplied with certain information about the current operating state of the internal combustion engine, for example pressure in the intake manifold, actual speed, a desired target speed for idling and other, peripherally usable operating status information , such as throttle valve position, position of a bypass valve at which the idle charge control system in particular acts and / or, also instead of the pressure in the intake pipe, information about the amount of air or air mass sucked in.
  • the idle speed controller can determine an electrical manipulated variable as a setpoint, for example an air volume signal 05011 or an air mass signal m setpoint, and feed it to an idle actuator (LL actuator), which converts the air mass setpoint, for example, into an opening cross-section (of the valve in the bypass mentioned earlier) .
  • LL actuator idle actuator
  • Idle actuators usually work in the adjustment of the opening cross-section, via which the internal combustion engine is supplied with the required amount of air, as an electromagnetic converter and can in this case be designed as a winding rotary actuator (EWD) or as a magnetic part for valve actuation.
  • EWD winding rotary actuator
  • the idle actuator In order to have the least possible mismatch in the actuator area, the idle actuator, in order to correctly convert the electrical manipulated variable supplied to it into the opening cross section, must be constructed in a complex manner and have a characteristic curve that is as reproducible as possible.
  • One of the objects of the present invention is therefore to provide a device for adapting an actuator characteristic curve which fulfills the condition that the control setpoint value supplied to the actuator is substantially the same as the actual size resulting from the action of the actuator including peripheral influences on the idle speed controller with an idle speed controller characteristic curve, that the air quantity or air mass setpoint at the output of the idle speed controller is essentially the same is the air quantity or air mass supplied to the internal combustion engine or drawn in by it.
  • the method according to the invention with the characterizing features of the main claim and the device according to the invention with the characterizing features of the first device claim have the advantage, in contrast, that the adaptation to the (possibly changing under certain influencing factors) characteristic of the actuator and the inclusion and, in this respect, regulation of others Disturbances occur in such a way that there is an effective independence from the actuator characteristic curve, so that it is no longer necessary to construct the actuator used in each case, applied to the idle charge control, that is to say the idle actuator, in a particularly complex manner.
  • the invention makes it possible to work with simpler actuator designs, with air mass measurement being completely independent of the height at which the internal combustion engine is located and the air quantity measurement being drastically reduced as a function of height.
  • the invention also ensures independence from the leakage air, so that engine settings are no longer required and, moreover, the inventive adaptation, which takes place during the entire control operation, does not influence the actual idle charge control.
  • FIG. 1 shows, in the form of a block diagram, an idle charge control with idle speed controller and the idle controller actuated by it and an intermediate characteristic adaptation circuit interposed in accordance with a feature of the present invention
  • FIG. 3 in the form of a Diagram of the actuator characteristic air quantity or air mass over the electrical manipulated variable T and the effects of the adaptation according to the invention on the course of the characteristic curve.
  • the adaptation to the characteristic curve of the idle controller that is then available at the respective time and the leakage air take place according to a specific strategy, which has the aim of an additive and / or multiplicative intervention in the setpoint output by the (idle speed) controller.
  • the idle speed controller with 10 and the actuator actuated by it via the system for adapting the characteristic curve 11 is referred to as an idle controller with 12.
  • the idle actuator acts on the opening cross section in the intake manifold of an internal combustion engine 13, in particular by correspondingly enlarging or reducing a bypass cross section or by motorized adjustment of the throttle valve.
  • the air that the internal combustion engine 13 ultimately receives is composed of the air through the actuator or the air that the actuator passes through due to its actuation, and a residual air leakage, for example, flowing through the throttle valve.
  • the characteristic curve adaptation according to the invention in block 11 converts the target air quantity Q target or m target output by idle speed controller 10 into an electrical manipulated variable ⁇ in such a way that an air quantity (or air mass) is set with idle actuator 12 which, together with the leakage air, produces the desired intake air quantity Q is (or air mass m) is obtained.
  • each integrator 11 is assigned release links, the offset integrator 11 a release element FG1 and the slope integrator 12 a release element FG2.
  • the slope integrator 12 intervenes on the setpoint output by the idle speed controller 10 multiplicatively via a multiplier M with a predetermined multiplication factor, while the offset correction from the output of the integrator 11 takes place additively at a summation point S1.
  • Both integrators 11 and 12 are supplied with an air quantity difference signal ⁇ Q from a second summation or comparison point S2, which corresponds to the deviation of the target size (target air quantity Q target or target air mass m target ) from the actual value (air quantity Q actual or air mass m actual ).
  • the specification Q actual can be derived from an air flow meter in the intake pipe or can be obtained in another known manner.
  • the desired relationship Q actual Q target (or also based on the air mass, which will not be repeated in the following) can therefore be achieved by changing two parameters, namely by varying the offset K1 and by varying the gradient K2.
  • the integrators 11 and 12 are each followed by summation points S3 and S4, to which start values K10 for the offset and K20 for the slope are supplied.
  • the working point shift is the first adaptation step by offset, as indicated by arrow A; it is obvious that the multiplicative slope intervention must not be implemented in a working point which is below the offset working point, since in this case there is an inverse, that is to say undesirable, effect.
  • the slope adaptation always takes place in working points above the offset working point.
  • the conditions for the release block FG2 of the slope integrator 12 are additionally designed such that the slope is only adapted for air flow rates that are greater than, for example, a minimum air flow rate, such as results for the clear idle case.
  • the procedure is preferably such that the instantaneous Q target or m target values are stored at the moment the throttle valve is opened, for which purpose a memory block SB is provided, to which a throttle valve signal DK and the Q target value are supplied; this storage then corresponds to the last operating point at which the offset integrator 11 has been adapted.
  • a memory block SB is provided, to which a throttle valve signal DK and the Q target value are supplied; this storage then corresponds to the last operating point at which the offset integrator 11 has been adapted.
  • it is then checked in each case whether the now requested air volume value (Q target ; m target ) is greater than the value last saved and only then can the release be carried out; the block comparing the two setpoints is designated VG in FIG. 2.
  • This condition can alternatively be replaced by the consideration that a slope adaptation can always be enabled when the current speed is above a certain speed, for example the following condition is met n> n LL + 500 min-1, because assumed can be that, at higher speed, an operating point on the characteristic curve is also taken, which is above the idling point, so that one is on the correct section of the characteristic curve.
  • a slope adaptation can always be enabled when the current speed is above a certain speed, for example the following condition is met n> n LL + 500 min-1, because assumed can be that, at higher speed, an operating point on the characteristic curve is also taken, which is above the idling point, so that one is on the correct section of the characteristic curve.
  • Such a case of an increased speed occurs, for example, after a gas surge or in overrun. It must be mentioned, however, that this consideration should only apply in the alternative and that the storage of the setpoints has an unconditional advantage before the throttle valve is opened.
  • a further summation point S5 is provided in front of the multiplier M, at which an air quantity 0 0 is subtracted from the setpoint Q target .
  • This measure serves to optimize the work area.
  • the value of 0 0 should not be greater than the minimum target Air quantity Q Soll , so that the quantity reaching the multiplier M after the summation point S5 is preferably always larger than O.
  • This addition with a negative value of 0 0 makes it possible to set the pivot point of the curve or characteristic as close as possible to the working point.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Feedback Control In General (AREA)
EP84108796A 1983-09-21 1984-07-25 Verfahren und Vorrichtung zur Adaption eines Stellglied-Kennlinienverlaufs Expired EP0136449B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3334062 1983-09-21
DE19833334062 DE3334062A1 (de) 1983-09-21 1983-09-21 Verfahren und vorrichtung zur adaption eines stellglied-kennlinienverlaufs

Publications (3)

Publication Number Publication Date
EP0136449A2 EP0136449A2 (de) 1985-04-10
EP0136449A3 EP0136449A3 (en) 1987-01-21
EP0136449B1 true EP0136449B1 (de) 1989-05-03

Family

ID=6209650

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84108796A Expired EP0136449B1 (de) 1983-09-21 1984-07-25 Verfahren und Vorrichtung zur Adaption eines Stellglied-Kennlinienverlaufs

Country Status (5)

Country Link
US (1) US4567869A (ja)
EP (1) EP0136449B1 (ja)
JP (1) JPH07122416B2 (ja)
AU (1) AU572166B2 (ja)
DE (2) DE3334062A1 (ja)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672934A (en) * 1983-09-21 1987-06-16 Robert Bosch Gmbh Method and apparatus for adapting the characteristic of a final controlling element
DE3415183A1 (de) * 1984-04-21 1985-10-31 Robert Bosch Gmbh, 7000 Stuttgart Verfahren und vorrichtung zur adaption eines stellglied-kennlinienverlaufs
DE3429351C2 (de) * 1984-08-09 1994-06-23 Bosch Gmbh Robert Verfahren und Einrichtung zur Steuerung und/oder Regelung der Leerlaufdrehzahl einer Brennkraftmaschine
JPH0660593B2 (ja) * 1985-08-05 1994-08-10 株式会社日立製作所 電子式内燃機関制御装置
DE3677712D1 (de) * 1985-10-21 1991-04-04 Honda Motor Co Ltd Methode zur steuerung des spulenstroms eines magnetventils, das die saufluftmenge eines innenverbrennungsmotors steuert.
DE3642476A1 (de) * 1986-12-12 1988-06-23 Bosch Gmbh Robert Verfahren und einrichtung zur einbeziehung von additiv und multiplikativ wirkenden korrekturgroessen bei einem kraftstoff kontinuierlich zufuehrenden system
KR910001692B1 (ko) * 1987-01-20 1991-03-18 미쓰비시 뎅끼 가부시끼가이샤 내연기관의 회전수 제어장치
DE3743770C2 (de) * 1987-12-23 1996-08-08 Vdo Schindling Verfahren zur Steuerung der Leistung eines Dieselmotors
DE4029537A1 (de) * 1990-09-18 1992-03-19 Bosch Gmbh Robert Verfahren und vorrichtung zur steuerung und/oder regelung einer betriebsgroesse einer brennkraftmaschine
JP5287839B2 (ja) * 2010-12-15 2013-09-11 株式会社デンソー 燃料噴射特性学習装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4108127A (en) * 1977-04-01 1978-08-22 Autotronic Controls, Corp. Modulated throttle bypass
DE3036107C3 (de) * 1980-09-25 1996-08-14 Bosch Gmbh Robert Regeleinrichtung für ein Kraftstoffzumeßsystem
DE3039436C3 (de) * 1980-10-18 1997-12-04 Bosch Gmbh Robert Regeleinrichtung für ein Kraftstoffzumeßsystem einer Brennkraftmaschine
DE3039435C2 (de) * 1980-10-18 1984-03-22 Robert Bosch Gmbh, 7000 Stuttgart Vorrichtung zur Regelung der Leerlauf-Drehzahl von Brennkraftmaschinen
JPS58183841A (ja) * 1982-04-22 1983-10-27 Mazda Motor Corp エンジンのアイドル回転制御装置
JPS58195043A (ja) * 1982-05-11 1983-11-14 Nissan Motor Co Ltd 内燃機関の回転速度制御装置
JPS593135A (ja) * 1982-06-29 1984-01-09 Toyota Motor Corp 内燃機関のアイドル回転数制御方法
DE3238189A1 (de) * 1982-10-15 1984-04-19 Robert Bosch Gmbh, 7000 Stuttgart Leerlauf-regelsystem fuer eine brennkraftmaschine

Also Published As

Publication number Publication date
EP0136449A3 (en) 1987-01-21
JPH07122416B2 (ja) 1995-12-25
DE3334062A1 (de) 1985-04-11
US4567869A (en) 1986-02-04
AU572166B2 (en) 1988-05-05
JPS6073027A (ja) 1985-04-25
DE3478046D1 (en) 1989-06-08
AU3026984A (en) 1986-03-27
EP0136449A2 (de) 1985-04-10

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