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EP0399016B1 - Procede et dispositif pour adapter la courbe caracteristique d'un regulateur de ralenti - Google Patents

Procede et dispositif pour adapter la courbe caracteristique d'un regulateur de ralenti Download PDF

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Publication number
EP0399016B1
EP0399016B1 EP89913052A EP89913052A EP0399016B1 EP 0399016 B1 EP0399016 B1 EP 0399016B1 EP 89913052 A EP89913052 A EP 89913052A EP 89913052 A EP89913052 A EP 89913052A EP 0399016 B1 EP0399016 B1 EP 0399016B1
Authority
EP
European Patent Office
Prior art keywords
air
control deviation
speed
adaptation
sign
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
EP89913052A
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German (de)
English (en)
Other versions
EP0399016A1 (fr
Inventor
Wolfgang Krampe
Helmut Janetzke
Ernst Wild
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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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0399016A1 publication Critical patent/EP0399016A1/fr
Application granted granted Critical
Publication of EP0399016B1 publication Critical patent/EP0399016B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • 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
    • F02D41/2441—Methods of calibrating or learning characterised by the learning conditions
    • F02D41/2448—Prohibition of learning
    • 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
    • F02D2011/101—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 characterised by the means for actuating the throttles
    • F02D2011/102—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 characterised by the means for actuating the throttles at least one throttle being moved only by an electric actuator

Definitions

  • the invention relates to a method and a device for adapting the characteristic curve of an idle actuator, as it is attached in the intake tract of an internal combustion engine, in order to adjust the charge in the idle case so that a target speed is maintained.
  • a method and a device to which the invention relates are described in DE 34 15 183 A1.
  • a provisional target air quantity is determined, which should result in a specific target speed.
  • a value for a regulating air quantity is formed with the aid of the control deviation between the target rotational speed and the actual rotational speed, which value is added to the value of the provisional target air quantity in order to increase the actual target air quantity receive. From this A setpoint air quantity is calculated with the aid of an air quantity control value characteristic stored in a memory for the idle actuator, in particular a duty cycle.
  • the idle actuator is actuated with the read control value in such a way that the actual air quantity drawn corresponds exactly to the desired target air quantity.
  • the characteristic curve is incorrect, e.g. B. due to a change in density of the air since the last determination of the characteristic curve, or by a change in the leakage air proportion, there is an air quantity control deviation between the target air quantity and the actual air quantity. With the help of this air quantity control deviation, an adaptation of the mentioned characteristic curve is carried out.
  • the known device for adapting the characteristic curve of an idle actuator accordingly has a speed subtraction means for forming the speed control deviation, an air quantity subtraction means for forming the air quantity control deviation, a characteristic curve memory and an adaptation means. There is also a release means for releasing the adaptation.
  • the adaptation of the slope of the characteristic curve is released, for. B. if a given air volume flow rate is exceeded. Offset adaptation takes place e.g. B. whenever the slope adaptation is not running and a blocking time has expired.
  • the invention is based, on the one hand, on the object of specifying a method for adapting the course of the characteristic curve of an idling actuator, with which smooth engine running can be achieved quickly even after a starting phase.
  • the invention lies on the other hand, the object of specifying a device for executing such a method. This object is achieved with the features from the independent method or device claim.
  • the method according to the invention works in such a way that it only carries out the adaptation if the speed control deviation has the same sign as the air quantity control deviation. Accordingly, in the device according to the invention, the release means is designed such that it compares the signs of quantities with the same signs as the speed control deviation or the air quantity control deviation, and only releases the adaptation if the signs of the compared sizes match .
  • the invention makes use of the following knowledge with regard to processes in the starting phase of an engine and the subsequent phase.
  • the amount of air and the amount of fuel are controlled so that the engine revs up as quickly as possible.
  • a predetermined speed for. B. 500 rpm
  • the speed usually swings above the specified idling speed, e.g. B. 700 U / min to then drop below the target speed.
  • the speed control deviation receives a positive sign, which ensures an increase in the target air volume.
  • the control winding of the idle actuator is even colder than the temperature at which the actuator characteristic curve is usually recorded.
  • the cold winding has less resistance than the warmer one, which is why a larger average current flows than is actually desired when the duty cycle is read out.
  • the idle actuator then lets through an actual air volume that is above the target air volume. This applies continuously immediately after the start phase, so that an adaptation in Direction of a reduction in the duty cycle, that is, the amount of air.
  • This adaptation which is carried out immediately after the start phase, in the direction of lower air volume counteracts the effort of the speed controller to increase the speed if it falls below the target speed.
  • the adaptation is prohibited according to the invention if the signs of the speed control deviation and the air quantity control deviation differ, this action of the adaptation against the control direction of the speed controller is excluded. This can therefore quickly increase the speed back to the target speed.
  • Another advantage of the method and the device according to the invention is that if the voltage from the air flow meter is shunted, ie the actual air volume is output incorrectly, there is no or only a very slow incorrect adaptation.
  • a target intake pressure can be calculated based on known relationships. This pressure serves as an air quantity variable for addressing the air quantity size control value characteristic of the idle actuator.
  • the adaptation takes place on the basis of a comparison between the specified target intake pressure and the actual intake pressure measured by the pressure sensor. In this case, the sign of the air quantity control deviation is recognized by the sign of the intake pressure control deviation.
  • Any device suitable for this purpose can be considered as an idle actuator, in particular a bypass valve or a throttle valve idle stop.
  • the single figure schematically represents an internal combustion engine with an idle actuator and a block diagram of a device for adapting the characteristic of the idle actuator.
  • the figure shows an internal combustion engine 10 with an air flow meter 11, idle actuator 12 and actuator drive 13 and the block diagram of a device 14 for adapting the characteristic curve of the idle actuator 12.
  • the device 14 contains various functional groups. Of particular importance is a release means 15 which allows adaptation if the signs of a speed control deviation and an air quantity control deviation agree with each other. This function of the release means 15 distinguishes the device 14 shown from a known device as described in detail in DE 34 15 183 A1. All other function groups are therefore only briefly discussed. For detailed information, reference is made to the font mentioned.
  • the device 14 contains a speed value memory 16, an air quantity value memory 17, a speed subtraction means 18, a speed controller 19, an addition means 20, a characteristic curve memory 21, an adaptation means 22 and a release switch 23.
  • the speed value memory 16 and the air volume value memory 17 are addressed via values of operating variables.
  • these are values of the engine temperature T w (coolant temperature), the gear position and the switching status of an air conditioning system.
  • Each air quantity value read from the air quantity value memory 17 as a function of values of the named operating variables provides a provisional air quantity set value Q_SOLL_V, to which an air quantity value Q_R from the speed controller 19 is added in the addition means 20.
  • This value is calculated by the controller 19 as a function of the speed control deviation .DELTA.n, which is calculated by the speed subtraction means 18 by subtracting the actual speed from the target speed, as is read out from the speed value memory 16 depending on the values of the named operating variables.
  • the target air quantity Q_SOLL formed in the addition means 20 is supplied to the characteristic curve memory 21. From the stored characteristic curve, the pulse duty factor belonging to the entered target air quantity is read out as the control value for the actuator drive 13.
  • the characteristic curve stored in the characteristic curve memory 21 is adapted with the aid of the air quantity control deviation ⁇ Q, as is formed by an air quantity subtraction means 14 by subtracting the actual air quantity measured by the air quantity meter 11 from the desired air quantity.
  • the adaptation means 22 uses this air quantity control deviation to calculate adaptation values for the offset and the slope of the characteristic curve.
  • the respective current values of the speed control deviation ⁇ n and the air quantity control deviation ⁇ Q are fed to the release means 15. As long as the signs of these two control deviations match, the release means controls the release switch 23 in such a way that it connects the output of the air quantity subtraction means 24 to the input of the adaptation means 22. If, on the other hand, the condition mentioned is not met, the input of the adaptation means 22 is set to a signal of zero with the aid of the release switch 23. This means that no adaptation takes place.
  • function blocks 16-24 of the device 14 for adapting the characteristic curve of the idle actuator 12 are preferably implemented in practice by appropriately programming a microcomputer
  • the position of the idle actuator 12 is adjusted by changing the duty cycle of the voltage that drives it.
  • the control value can be any other value that is suitable for determining the amount of air to be let through by an idle actuator. It is also pointed out that it may be expedient to process further sizes in the device 14, e.g. B. the battery voltage if the idle actuator 12 is not supplied with a constant voltage, which is usually not the case. If the control voltage drops, the pulse duty factor must be increased accordingly in order to obtain the same flow rate through the idle actuator for the same target air volume.

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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)

Abstract

Un dispositif (14) pour adapter la courbe caractérisitque d'un régulateur de ralenti comporte un organe de validation (15) qui n'autorise l'adaptation que lorsque le signe de déviation de réglage de vitesse (Δn) correspond au signe de déviation de réglage de quantité d'air (ΔQ). Grâce à ce dispositif, l'adaptation du réglage de la vitesse ne peut pas avoir d'effet contraire, ni à cause d'une adaptation insuffisante ni à cause de signaux de défaut de courant émis par l'appareil de mesure de quantité d'air (11).

Claims (8)

1. Procédé pour adapter la courbe caractéristique d'un régulateur de ralenti, dans lequel :
- la déviation de réglage (Δn) de la vitesse de rotation est formée entre la vitesse de rotation de consigne et la vitesse réelle d'un moteur à combustion interne et à partir de cette déviation de réglage de la vitesse de rotation une valeur de consigne d'une grandeur de quantité d'air est déterminée pour établir une quantité d'air de consigne, qui soit appropriée pour éliminer la déviation de réglage de la vitesse de rotation.
- la déviation de réglage (ΔQ) des grandeurs de quantités d'air est formée entre la valeur de consigne et la valeur réelle de la grandeur de quantité d'air, cette déviation de réglage des grandeurs de quantités d'air étant basée sur une déviation de réglage de quantité d'air.
- la courbe caractéristique donnant la valeur de commande en fonction des grandeurs de quantité d'air est adaptée à l'aide de la déviation de réglage des grandeurs de quantité d'air, quand une condition pour la libération de l'adaptation est remplie, procédé caractérisé en ce que l'adaptation n'est alors libérée que quand la déviation de réglage de la vitesse de rotation présente le même signe que la déviation de réglage des quantités d'air.
2. Procédé selon la revendication 1, caractérisé en ce que pour la comparaison des signes on emploie directement le signe de la déviation de réglage de la vitesse de rotation.
3. Procédé selon la revendication 1, caractérisé en ce que pour la comparaison des signes on emploie une grandeur qui présente toujours le même signe que la déviation de réglage de la vitesse de rotation.
4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que la déviation de réglage des quantités d'air est formée en tant que déviation de réglage des grandeurs de quantité d'air et en ce que pour la comparaison des signes on utilise directement le signe de la déviation de réglage de la quantité d'air.
5. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que pour la comparaison des signes on utilise une grandeur qui présente toujours le même signe que la déviation de réglage des quantités d'air.
6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que la quantité d'air réelle est mesurée et en ce que la quantité d'air elle-même est utilisée comme grandeur de quantité d'air.
7. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que l'on utilise comme grandeur de quantité d'air la pression d'aspiration, en mesurant la pression d'aspiration réelle et la pression de sortie de consigne étant déterminée à partir de la vitesse de rotation et de la déviation de réglage de la vitesse de rotation.
8. Dispositif pour adapter la courbe caractéristique d'un régulateur de ralenti avec :
- un organe de soustraction (18) de la vitesse de rotation pour former la déviation de réglage de la vitesse de rotation (Δn) entre la vitesse de rotation de consigne et la vitesse réelle d'un moteur à combustion interne (10)
- un organe de soustraction (24) de la grandeur de quantité d'air pour former la déviation de réglage (ΔQ) des grandeurs de quantité d'air entre la valeur de consigne et la valeur réelle d'une grandeur de quantité d'air, cette déviation de réglage des grandeurs de quantité d'air étant basée sur une déviation de réglage des quantités d'air.
- une mémoire (21) de courbes caractéristiques, qui met en mémoire une courbe caractéristique de la valeur de commande des grandeurs de quantité d'air.
- un organe d'adaptation (22) pour adapter la courbe caractéristique dans la mémoire de courbes caractéristiques et
- un organe de libération (15) pour libérer l'adaptation,
dispositif caractérisé en ce que l'organe de libération (15) ne libère l'adaptation que lorsque la déviation de réglage de la vitesse de rotation présente le même signe que la déviation de réglage des quantités d'air.
EP89913052A 1988-12-14 1989-11-25 Procede et dispositif pour adapter la courbe caracteristique d'un regulateur de ralenti Expired - Lifetime EP0399016B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3842002 1988-12-14
DE3842002A DE3842002A1 (de) 1988-12-14 1988-12-14 Verfahren und vorrichtung zum adaptieren der kennlinie eines leerlaufstellers

Publications (2)

Publication Number Publication Date
EP0399016A1 EP0399016A1 (fr) 1990-11-28
EP0399016B1 true EP0399016B1 (fr) 1992-05-20

Family

ID=6369097

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89913052A Expired - Lifetime EP0399016B1 (fr) 1988-12-14 1989-11-25 Procede et dispositif pour adapter la courbe caracteristique d'un regulateur de ralenti

Country Status (6)

Country Link
US (1) US5094207A (fr)
EP (1) EP0399016B1 (fr)
JP (1) JP2768823B2 (fr)
KR (1) KR0148795B1 (fr)
DE (2) DE3842002A1 (fr)
WO (1) WO1990007052A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2827452B2 (ja) * 1990-05-16 1998-11-25 住友電気工業株式会社 セラミックス超電導体およびその製造方法
JPH04334737A (ja) * 1991-05-02 1992-11-20 Japan Electron Control Syst Co Ltd 内燃機関のアイドル回転速度制御装置
JP2906770B2 (ja) * 1991-10-14 1999-06-21 日産自動車株式会社 内燃機関の回転数制御装置
US5218945A (en) * 1992-06-16 1993-06-15 Gas Research Institute Pro-active control system for a heat engine
IT1263579B (it) * 1993-06-16 1996-08-27 Weber Srl Sistema per la regolazione della portata di aria aspirata da un motorea combustione interna.
US9163570B2 (en) * 2013-08-16 2015-10-20 GM Global Technology Operations LLC Method and system for determining diesel engine airflow in an engine using a late intake valve closure strategy

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS555433A (en) * 1978-06-26 1980-01-16 Nissan Motor Co Ltd Fuel controller for internal combustion engine
US4672934A (en) * 1983-09-21 1987-06-16 Robert Bosch Gmbh Method and apparatus for adapting the characteristic of a final controlling element
US4580535A (en) * 1985-06-03 1986-04-08 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Engine idling speed controlling system
KR900006088B1 (ko) * 1986-06-26 1990-08-22 미쓰비시전기 주식회사 내연기관의 아이들 회전수 제어장치
DE3624441A1 (de) * 1986-07-19 1988-01-28 Bosch Gmbh Robert Diagnoseverfahren zur quantitativen ueberpruefung von stellgliedern bei brennkraftmaschinen
DE3722528A1 (de) * 1987-07-08 1989-01-19 Vdo Schindling Reglereinheit
DE3733623A1 (de) * 1987-10-05 1989-04-13 Bosch Gmbh Robert Einrichtung zur einstellung einer betriebskenngroesse einer brennkraftmaschine
JP2751323B2 (ja) * 1989-02-21 1998-05-18 スズキ株式会社 内燃機関のアイドル回転数制御装置

Also Published As

Publication number Publication date
KR0148795B1 (ko) 1998-10-01
DE58901502D1 (de) 1992-06-25
JPH03502723A (ja) 1991-06-20
KR910700401A (ko) 1991-03-15
JP2768823B2 (ja) 1998-06-25
EP0399016A1 (fr) 1990-11-28
WO1990007052A1 (fr) 1990-06-28
US5094207A (en) 1992-03-10
DE3842002A1 (de) 1990-06-21

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