EP0412010A1 - 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
EP0412010A1
EP0412010A1 EP90402204A EP90402204A EP0412010A1 EP 0412010 A1 EP0412010 A1 EP 0412010A1 EP 90402204 A EP90402204 A EP 90402204A EP 90402204 A EP90402204 A EP 90402204A EP 0412010 A1 EP0412010 A1 EP 0412010A1
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EP
European Patent Office
Prior art keywords
term
function
derivative
value
evaluated
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
EP90402204A
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English (en)
French (fr)
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EP0412010B1 (de
Inventor
Jean-Marie Taupin
Frank Boutet
Richard Marchard
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.)
Renault SA
Original Assignee
Renault SA
Regie Nationale des Usines Renault
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Filing date
Publication date
Application filed by Renault SA, Regie Nationale des Usines Renault filed Critical Renault SA
Publication of EP0412010A1 publication Critical patent/EP0412010A1/de
Application granted granted Critical
Publication of EP0412010B1 publication Critical patent/EP0412010B1/de
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
    • F02D41/1497—With detection of the mechanical response of the engine
    • F02D41/1498—With detection of the mechanical response of the engine measuring engine roughness
    • 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
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
    • F02D2200/1015—Engines misfires

Definitions

  • the invention relates to regulating the engine speed at idle for internal combustion engines comprising an idle control computer which controls a solenoid valve bypass of the throttle valve, making it possible to modify the filling of the engine in order to regulate the idling and also for gasoline engines with single-point or multi-point injection comprising a computer which controls both the injection of gasoline, to ensure the desired richness at all speeds, ignition, and also a butterfly bypass solenoid valve, making it possible to modify filling the engine to regulate idling.
  • the object of the invention is to find a method for regulating the idling of such an engine, implemented in the usual computer for controlling the air valve, and which eliminates the above drawbacks, by simplifying the device, in particular by the removal of most sensors, while improving its operational safety and performance.
  • the duty cycle of the opening of the air valve which according to custom, is calculated by adding a constant, an integral term and a proportional term, is added a differential term calculated directly from the derivative with respect to the time of the period between two high dead centers, suitably filtered and multiplied by a variable gain according to various parameters.
  • filtering is ensured by calculation, not in relation to time but in relation to the number of top dead centers, by calculating the gross derivative at each top dead center by multiplying by a scale factor the difference between the measured period and the previous period, then calculating the filtered derivative by incrementing the previous value of this derivative by only a certain fraction of the difference between the gross derivative and this previous value.
  • variable gain is calculated by performing the product of several terms evaluated from tables, each according to a parameter.
  • the first term taking into account the variations of the regime is calculated, to the nearest sign and to a factor near, by multiplying the derivative previously evaluated by the square of the regime, the result being used as input in a table which gives the factor of diet correction.
  • a second oscillation frequency correction term is also calculated by a table with an accumulation function at the input which is incremented by a first value, and capped at a maximum, if the speed variation function calculated previously leaves the band corresponding to a certain hysteresis value on either side of the zero, and decremented by a second value at each top dead center, with a floor value.
  • a third term is a function of the water temperature and also calculated by a table as a function of the measured water temperature.
  • the filtering takes place not with respect to time but with respect to the number of top dead centers.
  • variable gain G is calculated by performing the product of several corrective terms evaluated from tables, each as a function of a parameter.
  • the second term is preferably a frequency correction term CF, also evaluated from a table as a function of an accumulation function F, translating the number and amplitude of oscillations of the term DN.
  • Figures 1 and 2 illustrate the application of such a variation and we see the various increases corresponding to the various crossings of the curves -h, + h by the DN function, as well as the reinitialization of this function after a defined time.
  • a third CT correction term temperature is also evaluated by a table as a function of the TE water temperature measured directly.
  • the influence of the frequency correction term CF on the gain makes it possible to modify the differential correction in critical cases, such as high amplitude to high oscillations frequency, avoiding the risks of abrupt resumption of the injection after cut in deceleration, as well as the instabilities of the engine.
  • the accumulation function F rises, possibly up to its ceiling, which corresponds to a reduction in gain, whereas on the contrary, in the case of stability, this function decreases, possibly up to 'at its floor value, which corresponds in the table to stronger gains.
  • CT correction as a function of the water temperature makes it possible to take into account the needs of different engines, the non-linearity of the air valve, and the difference in engine sensitivity to stalling depending on the temperature.

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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)
EP19900402204 1989-08-02 1990-08-01 Verfahren zur Regelung der Leerlaufdrehzahl einer inneren Brennkraftmaschine Expired - Lifetime EP0412010B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8910439A FR2650633B1 (fr) 1989-08-02 1989-08-02 Procede de regulation du ralenti d'un moteur a combustion interne
FR8910439 1989-08-02

Publications (2)

Publication Number Publication Date
EP0412010A1 true EP0412010A1 (de) 1991-02-06
EP0412010B1 EP0412010B1 (de) 1993-05-26

Family

ID=9384418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900402204 Expired - Lifetime EP0412010B1 (de) 1989-08-02 1990-08-01 Verfahren zur Regelung der Leerlaufdrehzahl einer inneren Brennkraftmaschine

Country Status (3)

Country Link
EP (1) EP0412010B1 (de)
DE (1) DE69001728T2 (de)
FR (1) FR2650633B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4112848C2 (de) * 1991-04-19 2001-11-15 Bosch Gmbh Robert System zur Regelung der Leerlaufdrehzahl einer Brennkraftmaschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4378766A (en) * 1980-02-22 1983-04-05 Nippondenso Co., Ltd. Closed loop idle engine speed control with a valve operating relative to neutral position
EP0153012A2 (de) * 1984-01-20 1985-08-28 Honda Giken Kogyo Kabushiki Kaisha Methode zur Regelung der Leerlaufdrehzahl einer Innenbrennkraftmaschine
EP0206271A1 (de) * 1985-06-24 1986-12-30 Honda Giken Kogyo Kabushiki Kaisha Regelvorrichtung der Zahl der Leerlaufumdrehungen von Brennkraftmaschinen
EP0223430A2 (de) * 1985-10-21 1987-05-27 Honda Giken Kogyo Kabushiki Kaisha Methode zur Steuerung des Spulenstroms eines Magnetventils, das die Saufluftmenge eines Innenverbrennungsmotors steuert
EP0306906A2 (de) * 1987-09-09 1989-03-15 Jenbacher Werke AG Einrichtung zur Regelung des Verbrennungs-Luftverhältnisses einer Brennkraftmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4378766A (en) * 1980-02-22 1983-04-05 Nippondenso Co., Ltd. Closed loop idle engine speed control with a valve operating relative to neutral position
EP0153012A2 (de) * 1984-01-20 1985-08-28 Honda Giken Kogyo Kabushiki Kaisha Methode zur Regelung der Leerlaufdrehzahl einer Innenbrennkraftmaschine
EP0206271A1 (de) * 1985-06-24 1986-12-30 Honda Giken Kogyo Kabushiki Kaisha Regelvorrichtung der Zahl der Leerlaufumdrehungen von Brennkraftmaschinen
EP0223430A2 (de) * 1985-10-21 1987-05-27 Honda Giken Kogyo Kabushiki Kaisha Methode zur Steuerung des Spulenstroms eines Magnetventils, das die Saufluftmenge eines Innenverbrennungsmotors steuert
EP0306906A2 (de) * 1987-09-09 1989-03-15 Jenbacher Werke AG Einrichtung zur Regelung des Verbrennungs-Luftverhältnisses einer Brennkraftmaschine

Also Published As

Publication number Publication date
DE69001728D1 (de) 1993-07-01
FR2650633B1 (fr) 1994-04-29
DE69001728T2 (de) 1993-11-25
EP0412010B1 (de) 1993-05-26
FR2650633A1 (fr) 1991-02-08

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