EP0195194A2 - Dispositif de commande en fonction du temps d'injecteurs commandés électromagnétiquement - Google Patents

Dispositif de commande en fonction du temps d'injecteurs commandés électromagnétiquement Download PDF

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Publication number
EP0195194A2
EP0195194A2 EP86100974A EP86100974A EP0195194A2 EP 0195194 A2 EP0195194 A2 EP 0195194A2 EP 86100974 A EP86100974 A EP 86100974A EP 86100974 A EP86100974 A EP 86100974A EP 0195194 A2 EP0195194 A2 EP 0195194A2
Authority
EP
European Patent Office
Prior art keywords
fuel injection
resistor
injection valve
fuel
valve
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.)
Ceased
Application number
EP86100974A
Other languages
German (de)
English (en)
Other versions
EP0195194A3 (fr
Inventor
Horst Schlick
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.)
Mannesmann VDO AG
Original Assignee
Mannesmann VDO AG
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 Mannesmann VDO AG filed Critical Mannesmann VDO AG
Publication of EP0195194A2 publication Critical patent/EP0195194A2/fr
Publication of EP0195194A3 publication Critical patent/EP0195194A3/fr
Ceased 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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
    • F02M51/0675—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the valve body having cylindrical guiding or metering portions, e.g. with fuel passages
    • F02M51/0678—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the valve body having cylindrical guiding or metering portions, e.g. with fuel passages all portions having fuel passages, e.g. flats, grooves, diameter reductions
    • 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
    • F02D41/2432—Methods of calibration
    • F02D41/2435—Methods of calibration characterised by the writing medium, e.g. bar code
    • 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
    • F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
    • F02D41/2464—Characteristics of actuators
    • F02D41/2467—Characteristics of actuators for injectors
    • 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
    • F02D41/30—Controlling fuel injection
    • F02D41/3005—Details not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • 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
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
    • F02D2041/2031—Control of the current by means of delays or monostable multivibrators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/16—End position calibration, i.e. calculation or measurement of actuator end positions, e.g. for throttle or its driving actuator
    • 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
    • F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
    • F02D41/187—Circuit arrangements for generating control signals by measuring intake air flow using a hot wire flow sensor

Definitions

  • the invention relates to a device for time-controlled activation of electromagnetically actuated fuel injection valves according to the preamble of claim 1.
  • Devices of this type are used, in particular, for metering the fuel into the intake system of gasoline engines.
  • Known devices of this type comprise means, in particular a monoflop, for forming current pulses, the length of which depends on a control variable, in particular the amount of air drawn in.
  • the current pulses, the pulse length or pulse duration of which is determined by the monoflop, are amplified with a driver in order to excite the solenoid or excitation coil of the fuel injector with the required power in such a way that a valve needle is removed from its valve seat and fuel during one of the pulse length or pulse duration corresponding time is injected into the intake system.
  • fuel injection valves belonging to the prior art consist of a nozzle body with a magnet winding arranged inside a valve housing and a soft iron core, which form the magnetic coil. This interacts with an opposing armature which is connected to a valve needle guided in the nozzle body (DE-PS 23 49 584).
  • the present invention is based on the object of designing a device for time-controlled activation of electromagnetically actuated fuel injection valves and in particular the fuel injection valves themselves in such a way that the desired injection quantities can be metered in a closely tolerated manner with the fuel injection valves.
  • the invention is based on the principle that a very narrowly tolerated mechanical adjustment is dispensed with, instead the so-called identifier of each finished - and possibly roughly mechanically adjusted - fuel injector is detected, the identifier is queried with the injection electronics and the identifier is used to form the relevant one Corrective consideration of the fuel injection valve exciting current pulse.
  • the pulse duration or length of these current pulses is thus not only determined as usual by a control variable, in particular the amount of air sucked in by the internal combustion engine, but also by the identifier of the fuel injection valve with which the fuel is metered in.
  • the identifier is the ratio of the injection quantity to the actuation time of the fuel injection valve, the Control time is equal to the pulse duration of the exciting current pulse.
  • the identifier is unmistakably and permanently assigned to this fuel injection valve by the dimensioning of the electrical component which is attached to or in the fuel injection valve.
  • the electrical component which contains the identifier, consists of an electrical resistor, the resistance value of which is a measure of the identifier (injection quantity at the actuation time).
  • the electrical resistance is preferably arranged in an insulating part of the fuel injection valve, plug tongues being accommodated in the insulating part, via which the fuel injection valve is usually connected to the engine electronics.
  • an additional connector tongue is preferably used, to which the resistor is electrically connected, while the resistor, on the other hand, can be connected to one of the connector tongues, which are usually used to supply the current pulses to the magnetic coil.
  • the component is thus electrically connected to two plug tongues in the insulating part.
  • the electrical processing of the dimensioning of the electrical component containing the identifier is specified in Claim 5. Thereafter, the pulse duration or length of current pulses for energizing a solenoid coil of a fuel injector is not only determined as before by a control variable, in particular the amount of air drawn in, but also by dimensioning the component containing the identifier.
  • a control variable in particular the amount of air drawn in
  • dimensioning the component containing the identifier This can preferably be done according to claim 5 in that the electrical component is connected via an analog-digital converter and a table memory, in particular a ROM, to the means for forming the current pulses, these means being designed such that the current pulse length is formed by the size of the electrical component is influenced.
  • the current pulse length in addition to the control variable - air quantity - which controls the monoflop in the usual way, can be achieved by additionally controlling this monoflop with a correction variable which is also determined from the table memory in accordance with the electrical variable read out from the electrical component.
  • each fuel injection valve that is used in an injection system is permanently assigned an individual electronic component that contains the identifier of the corresponding fuel injection valve, and because the size of these electrical components can be queried separately and to correct the pulse duration of the current pulses that are fed into the fuel injection valve in question can be fed individually, the device with the fuel injection valves enables significantly improved synchronization of the four, six or eight Nozzles of a so-called multipoint injection than in a known conventional mechanically adjusted nozzle. This also results in fuel savings and a reduction in the pollutants released with the exhaust gas.
  • Fig. 1 denotes a valve housing, in the bore 2, a solenoid 3 is housed.
  • An armature 4 faces the magnet coil. The armature is pushed away by a closing spring 5 when the magnet coil is not energized and is drawn toward the magnet coil when the magnet coil is energized.
  • a valve needle 6 is connected to the armature.
  • the valve needle is pressed under the action of the closing spring 5 against a valve seat 7 and closes the fuel injection valve in this state.
  • the fuel is supplied via a fuel connection 8, a longitudinal bore 9, various free spaces including the longitudinal grooves 10 and 11 up to an annular shape 12 upstream of the valve seat.
  • the magnetic coil 3 To excite the magnetic coil 3, it is connected via a line (not visible in the drawing) to two plug tongues, which are accommodated in an insulating part 13.
  • One connector tongue 14 can be seen in the drawing, while two further connector tongues are not shown.
  • a resistor 16 is embedded in a recess 15, the resistance value of which is dimensioned proportionally to the identifier of the fuel injection valve, namely the injection quantity at the actuation time.
  • a lead 17 of the resistor is also connected to the tongue 14, while a second connection of the resistor to one of the other tongues is not visible in the drawing.
  • FIG. 2 shows the device for time-controlled activation of the fuel injection valve according to FIG. 1.
  • the injection electronics shown in FIG. 2 are generally part of a more extensive injection electronics system, with which a plurality of fuel injection valves of the type shown in FIG. 1 can be controlled.
  • An essential component of the injection electronics is a monoflop 18, the duration of which can be varied proportionally by a voltage signal at an input 19.
  • the voltage signal is generated by an air quantity sensor 20, which detects the air quantity drawn in by the internal combustion engine.
  • the pulse is amplified by a driver 22 and supplied to the magnetic coil 3 via a tongue 23, so that it is excited during the duration of the pulses.
  • the fuel injection valve, to which the solenoid 3 belongs doses an amount of fuel into the intake system that is proportional to the pulse duration. The amount depends on the identifier of the fuel injector, i.e. the ratio of injection quantity to actuation time, depending on the design and production.
  • This identifier, or deviations of the identifier from a target value can be read from a resistor 16, the resistance value of which has been set or selected in accordance with the identifier or deviation from the identifier.
  • This resistance with the specified resistance value is part of the fuel injection valve according to FIG. 1.
  • the resistance value queried by the resistor is fed via an analog-digital converter 24 as an address into a table stored with a ROM 25. Correction quantities are assigned to the addresses in the table. A correction value corresponding to the resistance value of the resistor 16 is read from the table of the ROM 25 and fed into a second input 26 of the monoflop.
  • the internal structure of the monoflop allows the pulse duration or length, which is initially determined by the control variable in accordance with the amount of air, to be corrected in accordance with the correction variable from the table in ROM 25.
  • the monoflop thus produces a pulse of such a long pulse duration that the amount of fuel metered by the associated fuel injector is exactly the same as the amount of fuel when the fuel injector reaches the setpoint of the identifier, ie the on injection target quantity, would have at the control time.
  • the pulse duration formed by the monoflop 18 without a correction quantity is lengthened or shortened to the extent that it corresponds to the deviation of the identifier of the associated fuel injector from the target value of the identifier.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
EP86100974A 1985-03-21 1986-01-24 Dispositif de commande en fonction du temps d'injecteurs commandés électromagnétiquement Ceased EP0195194A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853510157 DE3510157A1 (de) 1985-03-21 1985-03-21 Einrichtung zur zeitgesteuerten ansteuerung elektromagnetisch betaetigbarer kraftstoffeinspritzventile
DE3510157 1985-03-21

Publications (2)

Publication Number Publication Date
EP0195194A2 true EP0195194A2 (fr) 1986-09-24
EP0195194A3 EP0195194A3 (fr) 1988-02-17

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ID=6265852

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86100974A Ceased EP0195194A3 (fr) 1985-03-21 1986-01-24 Dispositif de commande en fonction du temps d'injecteurs commandés électromagnétiquement

Country Status (3)

Country Link
EP (1) EP0195194A3 (fr)
JP (1) JPS61215450A (fr)
DE (1) DE3510157A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0492876A1 (fr) * 1990-12-20 1992-07-01 Ford Motor Company Limited Rampe d'alimentation en carburant
WO1993003267A1 (fr) * 1991-08-06 1993-02-18 Siemens Automotive L.P. Rampe d'amenee de carburant a etalonnage electronique
EP1026384A1 (fr) * 1999-02-01 2000-08-09 Denso Corporation Système d'injection de carburant à plusieurs injecteurs
WO2000063545A1 (fr) * 1999-04-16 2000-10-26 Siemens Automotive Corporation Identification des caracteristiques d'un injecteur de moteur diesel
WO2001053900A2 (fr) * 1999-11-01 2001-07-26 Siemens Automotive Corporation Emploi d"augmentation de largeur de bande pour des tensions d"identification
WO2002053896A3 (fr) * 2001-01-04 2003-02-13 Siemens Vdo Automotive Corp Tension ou source de courant a commande d'intensite interne pour identification d'un injecteur de carburant

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0349368U (fr) * 1989-09-20 1991-05-14
US5502761A (en) * 1994-03-24 1996-03-26 Rolm Company Apparatus and method for relaying calling information to a pager or alternate telephone
JP3871375B2 (ja) * 1996-06-19 2007-01-24 株式会社日本自動車部品総合研究所 内燃機関の燃料噴射装置
DE10153522A1 (de) 2001-10-30 2003-05-22 Bosch Gmbh Robert Verfahren und Vorrichtung zum Auslesen von Daten eines Kraftstoffzumesssystems
DE10153520A1 (de) 2001-10-30 2003-05-22 Bosch Gmbh Robert Verfahren und Vorrichtung zum Auslesen von Daten eines Kraftstoffzumesssystems
DE10250921B4 (de) * 2002-10-31 2007-10-04 Siemens Ag Schaltungsanordnung und Verfahren zur sequentiellen Klassifizierung einer Mehrzahl von ansteuerbaren Bauteilen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2389001A1 (fr) * 1977-04-27 1978-11-24 Magneti Marelli Spa Equipement electronique de controle d'alimentation d'un melange air/essence dans un moteur a combustion interne
US4402294A (en) * 1982-01-28 1983-09-06 General Motors Corporation Fuel injection system having fuel injector calibration
GB2118325A (en) * 1982-04-03 1983-10-26 Lucas Ind Plc Fuel supply system for an internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2389001A1 (fr) * 1977-04-27 1978-11-24 Magneti Marelli Spa Equipement electronique de controle d'alimentation d'un melange air/essence dans un moteur a combustion interne
US4402294A (en) * 1982-01-28 1983-09-06 General Motors Corporation Fuel injection system having fuel injector calibration
GB2118325A (en) * 1982-04-03 1983-10-26 Lucas Ind Plc Fuel supply system for an internal combustion engine

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0492876A1 (fr) * 1990-12-20 1992-07-01 Ford Motor Company Limited Rampe d'alimentation en carburant
WO1993003267A1 (fr) * 1991-08-06 1993-02-18 Siemens Automotive L.P. Rampe d'amenee de carburant a etalonnage electronique
EP1026384A1 (fr) * 1999-02-01 2000-08-09 Denso Corporation Système d'injection de carburant à plusieurs injecteurs
WO2000063545A1 (fr) * 1999-04-16 2000-10-26 Siemens Automotive Corporation Identification des caracteristiques d'un injecteur de moteur diesel
US6516658B1 (en) 1999-04-16 2003-02-11 Siemens Vdo Automotive Corporation Identification of diesel engine injector characteristics
WO2001053900A2 (fr) * 1999-11-01 2001-07-26 Siemens Automotive Corporation Emploi d"augmentation de largeur de bande pour des tensions d"identification
WO2001053900A3 (fr) * 1999-11-01 2002-11-14 Siemens Automotive Corp Lp Emploi d"augmentation de largeur de bande pour des tensions d"identification
US6536268B1 (en) 1999-11-01 2003-03-25 Siemens Vdo Automotive Corporation Utilizing increasing width for identification voltages
US6851305B2 (en) 1999-11-01 2005-02-08 Siemens Vdo Automotive Corporation Utilizing increasing width for identification voltages
WO2002053896A3 (fr) * 2001-01-04 2003-02-13 Siemens Vdo Automotive Corp Tension ou source de courant a commande d'intensite interne pour identification d'un injecteur de carburant
US6651629B2 (en) 2001-01-04 2003-11-25 Mccoy John C. Internal energizable voltage or current source for fuel injector identification

Also Published As

Publication number Publication date
DE3510157A1 (de) 1986-09-25
JPS61215450A (ja) 1986-09-25
EP0195194A3 (fr) 1988-02-17

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