EP0147611B1 - Procédé et dispositif de régulation de la vitesse d'un moteur à combustion - Google Patents

Procédé et dispositif de régulation de la vitesse d'un moteur à combustion Download PDF

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Publication number
EP0147611B1
EP0147611B1 EP84113962A EP84113962A EP0147611B1 EP 0147611 B1 EP0147611 B1 EP 0147611B1 EP 84113962 A EP84113962 A EP 84113962A EP 84113962 A EP84113962 A EP 84113962A EP 0147611 B1 EP0147611 B1 EP 0147611B1
Authority
EP
European Patent Office
Prior art keywords
speed
idling
combustion engine
threshold value
control
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
EP84113962A
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German (de)
English (en)
Other versions
EP0147611A3 (en
EP0147611A2 (fr
Inventor
Alfred Dipl.-Ing. Kratt
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 EP0147611A2 publication Critical patent/EP0147611A2/fr
Publication of EP0147611A3 publication Critical patent/EP0147611A3/de
Application granted granted Critical
Publication of EP0147611B1 publication Critical patent/EP0147611B1/fr
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
    • 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
    • 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
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/12—Introducing corrections for particular operating conditions for deceleration
    • F02D41/123—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Definitions

  • the invention relates to a method and a device for speed control in an internal combustion engine in each case according to the preamble of the main claim or the first device claim.
  • LFR idle charge control
  • a target speed and other peripheral information such an idle charge control, implemented in analog or digital technology, is able to maintain perfect idling of the internal combustion engine, which is the case, for example, when maneuvering or overrun and when changing from this to idling is important.
  • the invention is therefore based on the object of preventing an undesirable interaction of the two systems, possibly leading to malfunctions, in an internal combustion engine equipped with overrun cutoff and idle charge control.
  • the idle charge control has a controller with PID control behavior, such a controller using analog technology or what is currently available is preferred, can be realized on the basis of digitally working systems.
  • PID control behavior of the idle charge control results in a further advantage of the present invention, which lies in the fact that the reinsertion speed of the thrust cut-off becomes dynamic. If one looks at the situation from the side of the thrust cut-off, this means that when the speed drops rapidly, fuel is supplied again at a higher reinstallation speed, that is to say the fuel is injected again at the injection system than at a slowly falling speed.
  • FIG. 1 An embodiment of the invention is shown in the drawing and is explained in more detail in the following description.
  • the drawing shows a block diagram only for illustration and a highly schematic basic structure of an idle charge control and a fuel cut-off system as well as the interaction of these two systems realized by the invention.
  • the invention is shown on the basis of discrete circuit blocks of a block diagram which indicates idle charge control and thrust cut-off circuit in this respect also realized by means of discrete components or assemblies.
  • the area of the idle charge control in the drawing is grouped around a logic control circuit, a microcomputer, a microprocessor or the like, which is denoted by 10 and outputs the actuator control signal, which is denoted by r, at its output connection 10a.
  • this peripheral device also has the following modules: an input block 11, via which signals to be processed such as the actual value of the current speed n is , a speed setpoint n should and a temperature specification is supplied via the outside temperature.
  • Two further input blocks 12 and 13 are provided which, in the case of a microcomputer as a controller, are designed immediately as analog-digital converters and supply operating status information about the respective engine temperature and the battery voltage.
  • An external memory 14 supplies the central computer 10 with additional information which is stored for the generation of the actuator control signal.
  • the microcomputer 10 is a PID controller in terms of its construction and design, and uses the input parameters to create a required basic duty cycle for the actuator control signal, including appropriate correction variables and querying the external data memory 14.
  • the actuator control signal passes via an output stage 15 and an intermediate circuit block 16, which serves to switch off for safety reasons - this also includes the circuit elements 17 and 18, which together form a fail-safe safety circuit, but which need not be discussed further here, for the actuator 19.
  • the actuator is designed as a two-turn rotary actuator 19a, which controls a slide valve 19b connected as an air bypass parallel to the throttle valve for idle charge control, the desired passage cross section of which results from the pulse duty factor of the pulse train supplied to the two-winding rotary actuator as an actuator control signal.
  • the fuel metering system for the internal combustion engine is here merely representative of all possible forms as a preliminary stage 20 (control multivibrator stage) for the generation of so-called tp preliminary pulses, which preliminary stage is supplied with an air mass or air quantity specification from an input block 21, in addition to the speed signal n of the internal combustion engine.
  • the preliminary stage or control multivibrator stage 20 operates via an intermediate link stage 22 to a further stage of the fuel injection system, which can be referred to as a multiplier stage; however, the output signal of the overrun cutoff stage represented by block 30 also reaches logic stage 22, so that the pre-pulses tp are suppressed when overrun cutoff stage 30 detects the operating state overrun of the internal combustion engine.
  • Corresponding input signals are evaluated by the overrun cut-off stage.
  • the invention now begins at this point and first detects the size or amplitude of the idle charge control from the PID controller generated actuator control signal r. If this signal is generated analogously, this can be fed immediately to the one input of a comparator or comparator 40; if the actuator control signal r is modulated in its duty cycle, then a simple integrating block 41 can be interposed in order to gain an analog value if it is assumed that the invention works on an analog basis.
  • the actuator control signal r is compared with a suitable - ⁇ threshold, which is generated or specified by a block 42. It has proven to be useful and is therefore a preferred embodiment of the present invention to design the ⁇ threshold as a function of the engine temperature ⁇ M and to select it in such a way that the engine speed resulting from the respective T is in any case less than the cut-off speed of the overrun cutoff function.
  • the comparator 40 determines that the effective actuator control signal r is greater than the predetermined ⁇ threshold, then the information also results from this comparator. that this resulting increased engine speed is effectively due to a sensible reaction of the idle charge control, and the comparator then generates a blocking signal at its output 40a, which is fed to an input 30a of the overrun cut-off stage 30 and whose function under these circumstances (actuator control signal r greater than the predetermined one) r threshold) blocks, d. H. prohibiting the use of the overrun cutoff function as a whole.
  • the invention is therefore able to cleanly separate the functions of the idle charge control from the overrun fuel cutoff, to prevent mutual influences and to ensure a faultless process in the control of the instantaneous speed without vibrations in the smooth transition.

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)

Claims (6)

1. Procédé de régulation de la vitesse de rotation d'un moteur à combustion interne selon lequel, d'une part, une régulation de vitesse de rotation de ralenti ou une régulation de remplissage de ralenti (LFR) donne une vitesse de rotation minimale en influençant l'alimentation en air du moteur à combustion interne au ralenti à l'aide d'un signal de commande généré par la régulation de ralenti ou la régulation de remplissage de ralenti (LFR) pour un organe de régulation (19), et toute augmentation ou réduction de l'alimentation d'air résulte des variations respectives, opposées de l'amplitude du signal de commande (r) et d'autre part l'alimentation en carburant est coupée pendant le fonctionnement en poussée du moteur à combustion interne, par la coupure de poussée (SAS), procédé caractérisé en ce que l'amplitude du signal de commande (r) est comparée à un seuil prédéterminé (τ-) et lorsqu'on atteint le seuil, la fonction de coupure de poussée (SAS) est bloquée.
2. Procédé selon la revendication 1, caractérisé en ce que le seuil (τ) est lui-même une fonction de la température du moteur et est choisi pour que la vitesse de rotation du moteur qui correspond au seuil (T-) respectif soit toujours inférieure à la vitesse de rotation de coupure de la fonction de coupure de poussée.
3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la partie D du régulateur de remplissage de ralenti ayant un comportement global (PID) règle la vitesse de rotation de remise en oeuvre de la fonction de coupure de poussée, de manière dynamique en ce que pour une vitesse de rotation chutant rapidement (n), le moteur à combustion interne reprend l'alimentation en carburant à une vitesse de remise en oeuvre plus élevée parce que le signal de commande (r) excité par le régulateur (PID) de la régulation de remplissage de ralenti, atteint plus tôt la valeur limite de la valeur du seuil.
4. Dispositif pour la mise en oeuvre du procédé selon les revendications 1 à 3 comportant une régulation de vitesse de rotation de ralenti ou une régulation de remplissage d'air de ralenti (LFR) pour maintenir un organe de réglage commandé (19) sous une vitesse de rotation minimale à l'aide d'un signal de commande généré par le régulateur de ralenti ou la régulation de remplissage de ralenti (LFR), pour influencer l'alimentation en air comburant du moteur à combustion interne au ralenti, l'augmentation ou la réduction de l'alimentation en air découlant des variations respectivement opposées de l'amplitude du signal de commande (T) et des moyens (30) pour bloquer l'alimentation en carburant si la vitesse de rotation est supérieure à la vitesse de rotation de ralenti et que le moteur à combustion interne est en même temps en mode de poussée, dispositif caractérisé par des moyens (42) qui fournissent une grandeur de seuil, des moyens (40) qui fournissent la valeur réelle de l'amplitude du signal de commande (τ) et la comparent au seuil (T-) et des moyens de comparaison qui fournissent un signal de blocage au moyen de blocage de l'alimentation en carburant lorsque l'amplitude du signal de commande atteint le seuil (r-).
5. Dispositif selon la revendication 4, caractérisé en ce que le régulateur de la régulation de remplissage de ralenti est un régulateur (PID) avec une partie D dimensionnée de manière que pour une chute rapide de la vitesse de rotation, la vitesse de rotation de remise en oeuvre de la coupure de poussée par le circuit de coupure de poussée (30) soit augmentée de manière dynamique à une vitesse de rotation de remise en oeuvre plus élevée.
6. Dispositif selon l'une des revendications 4 et 5, caractérisé en ce que le seuil (τ-) est une fonction de la température (ϑM) du moteur à combustion interne.
EP84113962A 1983-12-17 1984-11-19 Procédé et dispositif de régulation de la vitesse d'un moteur à combustion Expired EP0147611B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833345711 DE3345711A1 (de) 1983-12-17 1983-12-17 Verfahren und vorrichtung zur drehzahlregelung bei einer brennkraftmaschine
DE3345711 1983-12-17

Publications (3)

Publication Number Publication Date
EP0147611A2 EP0147611A2 (fr) 1985-07-10
EP0147611A3 EP0147611A3 (en) 1986-05-21
EP0147611B1 true EP0147611B1 (fr) 1989-08-30

Family

ID=6217239

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84113962A Expired EP0147611B1 (fr) 1983-12-17 1984-11-19 Procédé et dispositif de régulation de la vitesse d'un moteur à combustion

Country Status (5)

Country Link
US (1) US4572125A (fr)
EP (1) EP0147611B1 (fr)
JP (1) JPS60128955A (fr)
AU (1) AU570275B2 (fr)
DE (2) DE3345711A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6128727A (ja) * 1984-07-17 1986-02-08 Nippon Denso Co Ltd 車両用内燃機関の機関回転数制御装置
DE3521551A1 (de) * 1985-06-15 1986-12-18 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zur steuerung und/oder regelung von betriebskenngroessen einer brennkraftmaschine
US4787352A (en) * 1987-08-06 1988-11-29 Barber-Coleman Company Engine control circuit including speed monitor and governor
DE3828850A1 (de) * 1988-08-25 1990-03-08 Bosch Gmbh Robert Vorrichtung zur steuerung einer betriebskenngroesse einer brennkraftmaschine
US4969332A (en) * 1989-01-27 1990-11-13 Allied-Signal, Inc. Controller for a three-wheel turbocharger
JP2792573B2 (ja) * 1989-12-27 1998-09-03 ヤマハ発動機株式会社 燃料噴射式２サイクルエンジンの回転制御装置
DE4215959C2 (de) * 1991-05-15 1997-01-16 Toyoda Automatic Loom Works Verstärkungsfaktor-Einstelleinrichtung für PID-Regler
AUPQ700100A0 (en) * 2000-04-18 2000-05-11 Orbital Engine Company (Australia) Proprietary Limited Engine speed control for internal combustion engines

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868933A (en) * 1969-11-22 1975-03-04 Volkswagenwerk Ag Combustion motor
JPS5534295B2 (fr) * 1972-10-05 1980-09-05
US4203395A (en) * 1977-09-16 1980-05-20 The Bendix Corporation Closed-loop idle speed control system for fuel-injected engines using pulse width modulation
JPS56107927A (en) * 1980-01-31 1981-08-27 Nissan Motor Co Ltd Fuel feeder
JPS5751918A (en) * 1980-09-16 1982-03-27 Toyota Motor Corp Control method of fuel injection in internal combustion engine
JPS5752650A (en) * 1980-09-17 1982-03-29 Toyota Motor Corp Fuel cut-off control method for internal combustion engine
JPS59190449A (ja) * 1983-04-12 1984-10-29 Honda Motor Co Ltd 内燃エンジンの制御方法

Also Published As

Publication number Publication date
EP0147611A3 (en) 1986-05-21
JPH0571785B2 (fr) 1993-10-07
AU570275B2 (en) 1988-03-10
EP0147611A2 (fr) 1985-07-10
JPS60128955A (ja) 1985-07-10
DE3345711A1 (de) 1985-06-27
US4572125A (en) 1986-02-25
DE3479599D1 (en) 1989-10-05
AU3486784A (en) 1985-06-20

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