EP0399016A1 - 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.

Info

Publication number
EP0399016A1
EP0399016A1 EP19890913052 EP89913052A EP0399016A1 EP 0399016 A1 EP0399016 A1 EP 0399016A1 EP 19890913052 EP19890913052 EP 19890913052 EP 89913052 A EP89913052 A EP 89913052A EP 0399016 A1 EP0399016 A1 EP 0399016A1
Authority
EP
European Patent Office
Prior art keywords
air quantity
control deviation
speed
sign
adaptation
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.)
Granted
Application number
EP19890913052
Other languages
German (de)
English (en)
Other versions
EP0399016B1 (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
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 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

Links

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, such as is installed 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 speed and the actual speed, which is added to the value of the provisional target air quantity in order to To get air volume. From the This target air volume is calculated using a stored air volume control value characteristic curve for the idle actuator, in particular a control value
  • the idle speed control is actuated with the read control value so 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 aid of this air quantity control deviation, an adaptation of the 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, e.g. B. when a predetermined air 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 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.
  • 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 size 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 over, then to fall 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 still cold, as spoken by the temperature, to 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 a lower air volume counteracts the speed controller's effort to increase the speed if it falls below the target speed. If, however, the adaptation is prohibited according to the invention if the signs of the speed control deviation and air quantity control deviation differ, this effect is the
  • 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 stated target intake pressure and the actual intake pressure measured by the pressure sensor.
  • the sign of the air quantity control deviation is recognized in this case on the basis of 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 idle actuator and a block diagram of a device for adapting the characteristic of the idle actuator.
  • an internal combustion engine 10 with air flow meter 11, idle actuator 12 and actuator set 13 and the block diagram of a device 14 for adapting the characteristic of the idle actuator 12 are shown.
  • 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 quantity value memory 17 are addressed via values of operating variables.
  • these are values of the engine temperature TW (coolant temperature), the gear position and the switching status of an air conditioning system.
  • Each air quantity value read out 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 ⁇ n, which is calculated by the speed subtraction means 18 by subtracting the actual speed from the target speed, as read out from the speed value memory 16 depending on the values of the named operating variables becomes.
  • 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.
  • the respective current values of speed control deviation ⁇ n and 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 the latter 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 fulfilled, 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.
  • the functional 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 driving 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.

Landscapes

  • 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 (DELTAn) correspond au signe de déviation de réglage de quantité d'air (DELTAQ). 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).
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
DE3842002A DE3842002A1 (de) 1988-12-14 1988-12-14 Verfahren und vorrichtung zum adaptieren der kennlinie eines leerlaufstellers
DE3842002 1988-12-14

Publications (2)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5525581A (en) * 1990-05-16 1996-06-11 Engineering Research Association For Superconductive Generation Equipment And Materials Ceramic superconductor having a heterogeneous composition distribution and method of preparing the same

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9007052A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5525581A (en) * 1990-05-16 1996-06-11 Engineering Research Association For Superconductive Generation Equipment And Materials Ceramic superconductor having a heterogeneous composition distribution and method of preparing the same

Also Published As

Publication number Publication date
KR0148795B1 (ko) 1998-10-01
KR910700401A (ko) 1991-03-15
WO1990007052A1 (fr) 1990-06-28
JPH03502723A (ja) 1991-06-20
DE58901502D1 (de) 1992-06-25
DE3842002A1 (de) 1990-06-21
JP2768823B2 (ja) 1998-06-25
US5094207A (en) 1992-03-10
EP0399016B1 (fr) 1992-05-20

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