EP0583184B2 - Verfahren zur Regelung der Leerlaufdrehzahl einer inneren Brennkraftmaschine - Google Patents

Verfahren zur Regelung der Leerlaufdrehzahl einer inneren Brennkraftmaschine Download PDF

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Publication number
EP0583184B2
EP0583184B2 EP19930401878 EP93401878A EP0583184B2 EP 0583184 B2 EP0583184 B2 EP 0583184B2 EP 19930401878 EP19930401878 EP 19930401878 EP 93401878 A EP93401878 A EP 93401878A EP 0583184 B2 EP0583184 B2 EP 0583184B2
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EP
European Patent Office
Prior art keywords
value
embat
vmbat
engine
speed
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Expired - Lifetime
Application number
EP19930401878
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English (en)
French (fr)
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EP0583184B1 (de
EP0583184A1 (de
Inventor
Daniel Kern
Frédéric Roque
Patrick Lenfant
Yves Touzeau
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Renault SAS
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Renault SAS
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Application filed by Renault SAS filed Critical Renault SAS
Publication of EP0583184A1 publication Critical patent/EP0583184A1/de
Publication of EP0583184B1 publication Critical patent/EP0583184B1/de
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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
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/08—Introducing corrections for particular operating conditions for idling
    • F02D41/083—Introducing corrections for particular operating conditions for idling taking into account engine load variation, e.g. air-conditionning
    • 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
    • F02D2200/00—Input parameters for engine control
    • F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
    • F02D2200/503—Battery correction, i.e. corrections as a function of the state of the battery, its output or its type

Definitions

  • the present invention relates to a method for controlling the idle speed of an internal combustion engine fitted in particular to a motor vehicle.
  • a motor vehicle equipped with an internal combustion engine with positive ignition or with compression ignition must be supplied with electrical energy to be able to start at any time and have a sufficient quantity of current to operate the various electrical receivers in the vehicle (ignition, lighting, fan engine cooling, etc.).
  • the vehicle is conventionally equipped with a storage battery. electrochemical, this battery being permanently recharged during engine operation thanks to a generator electric or alternator driven by the rotation of the motor shaft.
  • the design of the alternator is operated in such a way as to allow the commissioning of the various consumers of currents connected to the battery under critical operating conditions of the engine and in particular at low engine rotation speed corresponding to engine idling.
  • the idling speed of an internal combustion engine of the type fitted to motor vehicles changes little or not in time if not with the water temperature. This speed is determined for a given type of engine as low as possible so that meet the consumption and depollution requirements imposed by the legislation in force.
  • the method of controlling the engine speed during idling phase makes it possible to eliminate these various disadvantages, in particular by allowing the use of alternators of lower class than those traditionally used, and this for an almost zero cost of production.
  • the method of controlling the rotation speed of an internal combustion engine during operation idle applies to an internal combustion engine which therefore supplies electric current to the destination of electrical consumers via an alternator and a battery and which includes a measurement sensor the value of the starter battery voltage, an engine control system comprising means for calculations and means for storing information and finally means for adjusting the idle speed controlled by said engine control system (compare with US-A-5,054,446).
  • the invention provides a method as defined in claim 1.
  • the adaptation of the idling speed makes it possible to maintain the electrical balance even with a dimmer with weak characteristics.
  • the idling speed is increased. So the alternator is able to produce more electric current and compensate for electricity consumption.
  • the raising the engine speed at idle then relieves the battery and prevents it from being discharged which operated repeatedly causes its destruction.
  • the measurements of the value of the battery voltage and the calculation of the various statistical values are performed after a period of time delay.
  • step (e) in accordance in step (e) the associated engine speed values are deduced from a specific mapping contained in the engine control system.
  • FIG. 1 therefore describes an internal combustion engine equipped with a device implementing the method of control of the engine rotation speed during the idling phases. Only the elements necessary for understanding the invention have been shown.
  • the internal combustion engine shown for example of the four-stroke type and with four in-line cylinders, referenced 1, is equipped with a fuel supply device, for example of the multipoint injection type where each cylinder is supplied with fuel by a specific electro-injector 5.
  • each electro-injector 5 is controlled by an engine control system 7, which determines the quantity of fuel injected according to operating conditions.
  • the engine control system 7 also controls the flow of oxidizing gases, especially during the operating phase. slowed down by means of a piloted actuator 4 making it possible to control the opening of the slowed down bypass.
  • This engine control system 7 conventionally comprises a computer comprising a CPU, a random access memory (RAM), read only memory (ROM), analog-digital converters (A / D), and different input interfaces and outings. It receives input signals relating to the operation of the engine and peripheral organs, performs operations and generates output signals intended in particular for injectors 5 and actuator means 4.
  • a computer comprising a CPU, a random access memory (RAM), read only memory (ROM), analog-digital converters (A / D), and different input interfaces and outings. It receives input signals relating to the operation of the engine and peripheral organs, performs operations and generates output signals intended in particular for injectors 5 and actuator means 4.
  • the input signals is the battery voltage information, emitted by a measurement sensor 22 disposed on the connection line from alternator 12 to battery 3.
  • the motor 1 in fact conventionally drives an electric generator or alternator 12 capable of producing for the engine operating ranges a charging current intended for the storage battery 3.
  • This alternator 12 essentially comprises a rotor and a stator.
  • the rotor driven by rare motor includes electromagnets consisting of one or more excitation windings.
  • the stator has a winding three-phase, The alternating current produced in the three-phase winding is transformed into direct current in a circuit rectifier before supplying the battery 3.
  • the method of controlling the idle speed of the engine as a function of the voltage of the starter battery 3, implemented by the engine control system 7, is as follows.
  • the battery voltage information Vbat measured periodically by the sensor 22 is processed by a digital filter first order low pass F1, of the form 1 / (1 + cp), so as to obtain a representative statistical variable VMbat the average value of the battery voltage over a given measurement horizon, such as the last hundred measures.
  • This first filtering is to take into consideration an average voltage which does not take into account brief variations in battery voltage, such as during a headlight call.
  • the voltage of reference of the starter batteries usually used is equal to 12.7 V.
  • the gross Ebat difference, between VMbat and Vs, is then treated by new filtering means so as to produce a second statistical value EMbat representative of the change in the difference between the average value of the battery voltage VMbat and the setpoint voltage Vs over a given horizon of calculated values.
  • This filtering uses two distinct filtering values according to the sign of the deviation. This decoupling of the following processing the positive or negative value of the difference allows greater flexibility in the dynamic adaptation of the rotation in idle phase depending on the battery voltage.
  • the Ebat deviation is therefore first treated by comparator means C which, depending on the value of the sign of the Ebat deviation, positive or negative, send the latter either to filter F2 or to filter F3.
  • Each value EMbat_i of the second statistical quantity EMbat is then converted into the rotation regime of the Rral_i engine, thanks to the addressing means A which call from a table stored in the memories M of the engine control system 7, the value of the rotation speed corresponding to the value of the statistical quantity produced.
  • Figure 3 shows a possible relationship between the values of EMbat and the engine speed.
  • the increase of the second statistical quantity corresponding to a negative variation of the difference between the average voltage observed and the normal voltage is accompanied by an increase in the rotation speed from the nominal speed corresponding to the other operating conditions of the motors and to a normal battery voltage up to a value maximum allowed for engine idling.
  • the speed value is then directly usable by the engine control system to adjust the engine idling speed as soon as the latter returns to idling operating phase, via actuator 4 and injectors 5.
  • control system motor 7 applies the previously described treatment to the battery voltage information and thus permanently has of the optimal value of the idle speed taking into account the different electrical consumers present.
  • the increase in tension linked to the increase in speed causes a reduction in the Ebat gap and therefore a stop gradual increase in the rotation speed.
  • the invention can be applied to an internal combustion engine whatever its combustion cycle (2 time, 4 stroke), the fuel used diesel or gasoline or, the number of its cylinders.

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)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Claims (5)

  1. Verfahren zur Steuerung der Drehzahl eines Verbrennungsmotors während der Leerlaufphase, wobei der Motor (1), der mittels eines Wechselsrichters (12) und einer Batterie (3) einen Strom in Richtung elektrische Verbraucher liefert, einen Meßfühler (22) für die Spannung der Batterie (3), eine Motorsteuereinrichtung (7) mit einer Rechneranordnung und mit einer Informationsspeicheranordnung und eine Regleranordnung (4) für den Leerlauf, ansteuerbar von der Motorsteuereinrichtung (7), aufweist, dadurch gekennzeichnet, dass der Wert der Drehzahl des Motors während des Leerlaufs erhöht wird, ausgehend von einem vorgegebenen Nominalwert, als Funktion der gemessenen Abnahme der Batteriespannung, derart, dass der Wechselrichter (12) die für die Verbraucher erforderliche Elektrizitätsmenge erzeugt, gemäß den folgenden Schritten:
    (a) periodisches Messen des Wertes Vbat_i der Batteriespannung (Vbat);
    (b) Berechnen bei jedem neuen Wert Vbat_i der so gemessenen Batteriespannung (Vbat) eines Wertes VMbat_i einer ersten statistischen Größe (VMbat), der den Mittelwert der Batteriespannung in Bezug auf einen gegebenen Horizont der gemessenen Werte darstellt;
    (c) Berechnen für jeden derart erhaltenen Wert VMbat_i der ersten statistischen Größe des Abstandes Ebat_i dieses Wertes von einem vorgegebenen Schwellwert Vs;
    (d) Berechnen eines Wertes EMbat_i einer zweiten statistischen Größe (EMbat), die den Mittelwert der Abstände Ebat_i zwischen der ersten statistischen Größe (VMbat) und dem Schwellwert Vs darstellt, wobei der Wert EMbat_i gemäß der folgenden Formel berechnet wird: ist Ebat_i > 0 (mit Ebat_i = VMbat_i - Vs), so gilt: EMbat_i = EMbat_i-1- ((Ebat_i) / F2) und ist Ebat_i < 0, so gilt: EMbat_i = EMbat_i-1- ((Ebat_i) / F3) wobei F2 und F3 zwei Konstanten sind und wobei EMbat_0 = 0 ist;
    (e) Zuordnen eines der Drehzahl des Motors entsprechenden Wertes Rral_i zu jedem Wert EMbat_i der zweiten statistischen Größe (EMbat);
    (f) Steuern der Regleranordnung (4) für den Leerlauf, dergestalt, dass zu jedem Zeitpunkt die Leerlaufdrehzahl des Motors (1) mit dem Wert Rral_i der Motordrehzahl zusammenfällt, der vom Wert EMbat_i der zweiten statistischen Größe (EMbat) abgeleitet ist.
  2. Verfahren zur Steuerung der Drehzahl eines Motors nach Anspruch 1, dadurch gekennzeichnet, dass die Messungen des Wertes der Spannung der Batterie (3) und die Berechnung der statistischen Werte (VMbat, EMbat) nach einer Verzögerungszeit (Tbat) durchgeführt werden.
  3. Verfahren zur Steuerung der Drehzahl eines Motors nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, dass gemäß Schritt (b) die Werte der ersten statistischen Größe (VMbat) gemäß der folgenden Formel berechnet werden: VMbat_i = VMbat_i-1 + ((Vbat_i - (VMbat_i-1)) / F1), wobei F1 eine Filterkonstante und wobei VMbat_0 = 0 sind.
  4. Verfahren zur Steuerung der Drehzahl eines Motors nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass F2 größer als F3 ist.
  5. Verfahren zur Steuerung der Drehzahl eines Motors nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass gemäß Schritt (e), die den Werten EMbat_i zugeordneten Werte Rral_i für die Drehzahl des Motors abgeleitet werden von einer speziellen in der Steuereinrichtung (7) für den Motor abgelegten kartographischen Darstellung.
EP19930401878 1992-08-12 1993-07-21 Verfahren zur Regelung der Leerlaufdrehzahl einer inneren Brennkraftmaschine Expired - Lifetime EP0583184B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9209938 1992-08-12
FR9209938A FR2694787B1 (fr) 1992-08-12 1992-08-12 Procédé de régulation du régime ralenti d'un moteur à combustion interne.

Publications (3)

Publication Number Publication Date
EP0583184A1 EP0583184A1 (de) 1994-02-16
EP0583184B1 EP0583184B1 (de) 1996-01-03
EP0583184B2 true EP0583184B2 (de) 1999-08-04

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ID=9432796

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Application Number Title Priority Date Filing Date
EP19930401878 Expired - Lifetime EP0583184B2 (de) 1992-08-12 1993-07-21 Verfahren zur Regelung der Leerlaufdrehzahl einer inneren Brennkraftmaschine

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Country Link
EP (1) EP0583184B2 (de)
DE (1) DE69301211T3 (de)
ES (1) ES2082610T5 (de)
FR (1) FR2694787B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08284719A (ja) * 1995-04-11 1996-10-29 Hitachi Ltd 車両用発電機の制御システム
DE19858348B4 (de) * 1998-12-17 2004-04-15 Continental Isad Electronic Systems Gmbh & Co. Ohg Fahrzeug-Antriebssystem
DE102010006489A1 (de) * 2010-02-02 2011-08-04 Audi Ag, 85057 Verfahren zum Betrieb einer Motorsteuerungseinrichtung eines Kraftfahrzeugs sowie Kraftfahrzeug

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60150450A (ja) * 1984-01-18 1985-08-08 Honda Motor Co Ltd 内燃エンジンのアイドル回転数フイ−ドバツク制御方法
JPS63167043A (ja) * 1986-12-29 1988-07-11 Honda Motor Co Ltd エンジンのアイドルアツプ制御装置
JPH07116960B2 (ja) * 1987-09-08 1995-12-18 本田技研工業株式会社 内燃機関の作動制御装置
KR930006165B1 (ko) * 1988-11-09 1993-07-08 미쓰비시전기주식회사 기관회전수의 제어장치
JPH03237241A (ja) * 1990-02-13 1991-10-23 Mitsubishi Electric Corp エンジンのアイドル回転数制御装置

Also Published As

Publication number Publication date
DE69301211T3 (de) 2000-03-30
EP0583184B1 (de) 1996-01-03
FR2694787A1 (fr) 1994-02-18
EP0583184A1 (de) 1994-02-16
ES2082610T3 (es) 1996-03-16
FR2694787B1 (fr) 1994-12-16
DE69301211D1 (de) 1996-02-15
DE69301211T2 (de) 1996-08-01
ES2082610T5 (es) 1999-12-16

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