EP0259544A1 - Système de dosage de mélange à commande électronique - Google Patents

Système de dosage de mélange à commande électronique Download PDF

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Publication number
EP0259544A1
EP0259544A1 EP87106978A EP87106978A EP0259544A1 EP 0259544 A1 EP0259544 A1 EP 0259544A1 EP 87106978 A EP87106978 A EP 87106978A EP 87106978 A EP87106978 A EP 87106978A EP 0259544 A1 EP0259544 A1 EP 0259544A1
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EP
European Patent Office
Prior art keywords
deceleration
value
acceleration
multiplication
operating parameter
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.)
Withdrawn
Application number
EP87106978A
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German (de)
English (en)
Inventor
Manfred Henning
Günter Gilz
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.)
Pierburg GmbH
Original Assignee
Pierburg 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 Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP0259544A1 publication Critical patent/EP0259544A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • F02D41/045—Detection of accelerating or decelerating state
    • 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
    • F02D41/10—Introducing corrections for particular operating conditions for acceleration

Definitions

  • the invention relates to an electronically controlled mixture formation system for internal combustion engines according to the preamble of patent claim 1.
  • the object of the invention is to create a generic mixture formation system with which the disadvantages described can be overcome and a longer-effective acceleration correction can be achieved which goes beyond the time at which there is a difference in the signal values.
  • finer tuning of the amount of fuel to be added during acceleration or deceleration should be achievable.
  • the combustion mixture to be supplied to the internal combustion engine can be set to a value even during acceleration and deceleration cases, which ensures good driveability and the lowest pollutant content in the exhaust gas.
  • the invention can be implemented cheaply by software using a computer control.
  • Fig. 1 shows a known electronically controlled mixture formation system for an engine 1, with an air intake duct 2 with an arbitrarily actuable throttle valve 3 and an injection valve 4 arranged upstream thereof, which is actuated in accordance with the amount of air sucked in and other factors by electrical Zußmeßsignale a signal generator stage 5 (control unit) and ensures a fuel-air mixture suitable for engine operation.
  • the signal generator stage 5 is acted upon by the signals of various operating parameters of sensors (not shown).
  • the amount of intake air on which the formation of the metering signal is based can be determined directly by a damper, hot wire, swirl counter etc. or indirectly from map memories addressed with operating parameters, the latter via throttle valve angle or engine speed and pressure in the air intake duct 2 downstream of the throttle valve 3.
  • the air intake duct 2 stores a different amount of fuel at each operating point due to wall precipitation and back pulsation, so that when the operating point changes, the fuel mixture briefly emaciates or enriches, the duration of which corresponds to the difference between the storage amounts available for the respective operating points, the rest depend on the engine temperature. During this period, however, the difference decreases steadily, which must be taken into account when correcting the composition of the fuel mixture.
  • the signal value determined directly or indirectly, indicating the amount of air sucked in, according to a control technology (Dubbel, paperback for mechanical engineering, 15th edition, page 1270) known PT1 or e-function to delay with a predefinable time constant when this signal value indicates a change in load or power, subtract the delayed value from the current signal value, multiply the subtraction result by a constant to form a dimensionless acceleration-deceleration correction value and this correction value to add or to multiply with the metering signal uncorrected with respect to acceleration or deceleration and formed on the basis of the current signal value.
  • a control technology Dubbel, paperback for mechanical engineering, 15th edition, page 1270
  • FIGS. 2 and 3 show versions of this device of the metering signal stage 5 (control unit) to be described in more detail, shown in the block diagram, as a hardware solution or, in the case of a computer control, also as a software solution.
  • the signal value indicating the air quantity is fed in FIG. 2 via a branch line 6 to a delay element 7, in which a changing signal value is tracked with a time delay after an approximated e-function to the changed signal value.
  • the output value of the delay element 7 is subtracted from the current signal value in a subtraction element 8 and the result is multiplied in a multiplier 9 by a constant to give a dimensionless correction value.
  • this correction value is added or multiplied by the metering signal formed from the current signal value or multiplied to a metering signal corrected with respect to acceleration or deceleration, which is fed to the injection valve.
  • FIG. 3 shows advantageous developments of the device according to FIG. 2, in which a further multiplier 11 is inserted after the multiplier 9, in which the dimensionless value is multiplied by a correction factor before it is supplied to the adder or multiplier 10.
  • An evaluation element 12 decides on the sign or size of the result present in the subtraction element whether acceleration or deceleration is present, so that switching elements 13, 14 can select the time constant of the delay element 7 and the correction factor of the multiplier 11.
  • Time constants and correction factors are taken from map memories 15, 16, 17, 18 provided for acceleration and deceleration, which are addressed with the current signal value indicating the air quantity or the current operating parameter signals.
  • the time constant and correction factor for acceleration are multiplied in multiplication elements 19, 20 by factors which are taken from table memories 21, 22 addressed to the motor temperature.
  • the signal characteristics result from a deceleration, but in the opposite direction, so that the metering signal is corrected to a lower value.
  • the formation of the metering signal usually takes place at a fixed frequency for the mixture formation system according to FIG. 1 and for mixture formation systems with influencing of the mixture composition by an actuator of a carburetor or with a frequency dependent on the engine speed, in particular for mixture formation systems with several injection valves.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
EP87106978A 1986-08-12 1987-05-14 Système de dosage de mélange à commande électronique Withdrawn EP0259544A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863627308 DE3627308A1 (de) 1986-08-12 1986-08-12 Elektronisch gesteuertes gemischbildungssystem
DE3627308 1986-08-12

Publications (1)

Publication Number Publication Date
EP0259544A1 true EP0259544A1 (fr) 1988-03-16

Family

ID=6307215

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87106978A Withdrawn EP0259544A1 (fr) 1986-08-12 1987-05-14 Système de dosage de mélange à commande électronique

Country Status (2)

Country Link
EP (1) EP0259544A1 (fr)
DE (1) DE3627308A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989008775A1 (fr) * 1988-03-17 1989-09-21 Robert Bosch Gmbh Systeme d'injection de carburant pour moteur a combustion interne compensant les conditions de fonctionnement dynamiques changeantes
WO1990007053A1 (fr) * 1988-12-14 1990-06-28 Robert Bosch Gmbh Procede de mesure de carburant
WO1991005155A1 (fr) * 1989-09-30 1991-04-18 Robert Bosch Gmbh Procede et dispositif de commande d'arrivee d'air dans un moteur a combustion interne
US5367462A (en) * 1988-12-14 1994-11-22 Robert Bosch Gmbh Process for determining fuel quantity
FR2768461A1 (fr) * 1997-09-15 1999-03-19 Siemens Ag Procede de commande de l'injection de carburant pour moteur a combustion interne
WO2014053220A1 (fr) * 2012-10-04 2014-04-10 Mtu Friedrichshafen Gmbh Procédé de régulation de la pression de rampe d'injection d'un moteur à combustion interne
WO2014106531A1 (fr) * 2013-01-02 2014-07-10 Mtu Friedrichshafen Gmbh Procédé pour faire fonctionner un moteur à combustion interne

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019203376B4 (de) * 2019-03-13 2021-01-21 Vitesco Technologies GmbH Verfahren und Vorrichtung zum Erkennen einer leistungsverändernden Manipulation einer Brennkraftmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2152093A5 (fr) * 1971-09-04 1973-04-20 Philips Nv
FR2378180A1 (fr) * 1977-01-20 1978-08-18 Bosch Gmbh Robert Procede et dispositif pour influencer de facon complementaire le debit de carburant delivre par une installation de traitement de carburant
US4359993A (en) * 1981-01-26 1982-11-23 General Motors Corporation Internal combustion engine transient fuel control apparatus
FR2524554A1 (fr) * 1982-04-02 1983-10-07 Honda Motor Co Ltd Appareil de reglage du fonctionnement d'un moteur a combustion interne

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5465222A (en) * 1977-11-04 1979-05-25 Nissan Motor Co Ltd Electronic control fuel injector for internal combustion engine
DE3042246C2 (de) * 1980-11-08 1998-10-01 Bosch Gmbh Robert Elektronisch gesteuerte Kraftstoff-Zumeßvorrichtung für eine Brennkraftmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2152093A5 (fr) * 1971-09-04 1973-04-20 Philips Nv
FR2378180A1 (fr) * 1977-01-20 1978-08-18 Bosch Gmbh Robert Procede et dispositif pour influencer de facon complementaire le debit de carburant delivre par une installation de traitement de carburant
US4359993A (en) * 1981-01-26 1982-11-23 General Motors Corporation Internal combustion engine transient fuel control apparatus
FR2524554A1 (fr) * 1982-04-02 1983-10-07 Honda Motor Co Ltd Appareil de reglage du fonctionnement d'un moteur a combustion interne

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 7, Nr. 199 (M-240)[1344], 3. September 1983; & JP-A-58 98 633 (MITSUBISHI JUKOGYO K.K.) 11-06-1983 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989008775A1 (fr) * 1988-03-17 1989-09-21 Robert Bosch Gmbh Systeme d'injection de carburant pour moteur a combustion interne compensant les conditions de fonctionnement dynamiques changeantes
US5101795A (en) * 1988-03-17 1992-04-07 Robert Bosch Gmbh Fuel injection system for an internal combustion engine, having compensation for changing dynamic operating conditions
WO1990007053A1 (fr) * 1988-12-14 1990-06-28 Robert Bosch Gmbh Procede de mesure de carburant
US5367462A (en) * 1988-12-14 1994-11-22 Robert Bosch Gmbh Process for determining fuel quantity
WO1991005155A1 (fr) * 1989-09-30 1991-04-18 Robert Bosch Gmbh Procede et dispositif de commande d'arrivee d'air dans un moteur a combustion interne
FR2768461A1 (fr) * 1997-09-15 1999-03-19 Siemens Ag Procede de commande de l'injection de carburant pour moteur a combustion interne
WO2014053220A1 (fr) * 2012-10-04 2014-04-10 Mtu Friedrichshafen Gmbh Procédé de régulation de la pression de rampe d'injection d'un moteur à combustion interne
US9556840B2 (en) 2012-10-04 2017-01-31 Mtu Friedrichshafen Gmbh Method for rail pressure regulation in an internal combustion engine
CN104685194B (zh) * 2012-10-04 2018-10-26 Mtu 腓特烈港有限责任公司 用于调节内燃机蓄压管压力的方法
WO2014106531A1 (fr) * 2013-01-02 2014-07-10 Mtu Friedrichshafen Gmbh Procédé pour faire fonctionner un moteur à combustion interne
CN105026739A (zh) * 2013-01-02 2015-11-04 Mtu腓特烈港有限责任公司 用于运行内燃机的方法
US9752528B2 (en) 2013-01-02 2017-09-05 Mtu Friedrichshafen Gmbh Method for operating an internal combustion engine

Also Published As

Publication number Publication date
DE3627308A1 (de) 1988-02-18

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