EP1537318B1 - Procede permettant de faire fonctionner un moteur a combustion interne - Google Patents

Procede permettant de faire fonctionner un moteur a combustion interne Download PDF

Info

Publication number
EP1537318B1
EP1537318B1 EP03793447A EP03793447A EP1537318B1 EP 1537318 B1 EP1537318 B1 EP 1537318B1 EP 03793447 A EP03793447 A EP 03793447A EP 03793447 A EP03793447 A EP 03793447A EP 1537318 B1 EP1537318 B1 EP 1537318B1
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
piezoelectric actuator
activating
control unit
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 - Lifetime
Application number
EP03793447A
Other languages
German (de)
English (en)
Other versions
EP1537318A1 (fr
Inventor
Klaus Joos
Ulrich Steinbrenner
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 EP1537318A1 publication Critical patent/EP1537318A1/fr
Application granted granted Critical
Publication of EP1537318B1 publication Critical patent/EP1537318B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D41/2096—Output circuits, e.g. for controlling currents in command coils for controlling piezoelectric injectors
    • 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
    • F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
    • 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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/005—Fuel-injectors combined or associated with other devices the devices being sensors

Definitions

  • the present invention relates to a method for operating an internal combustion engine having at least one injection valve, which is assigned to a control device of the internal combustion engine with a drive signal acted upon piezoelectric actuator, which causes a drive signal corresponding needle stroke of a valve needle of the injection valve for fuel injection.
  • the present invention relates to a control device for an internal combustion engine having at least one injection valve, which is associated with a control signal supplied to the control signal piezoelectric actuator, which causes a control signal corresponding to the needle stroke of a valve needle of the injection valve for fuel injection.
  • the present invention relates to a computer program for a control unit of a Internal combustion engine having at least one injection valve, which is assigned to a by the control unit with a drive signal acted upon piezoelectric actuator, which causes a control signal corresponding to the needle stroke of a valve needle of the injection valve for fuel injection.
  • a method for driving a capacitive actuator in which the actuator is operated by defined discharging a capacitor and the energy given thereby.
  • An integral value is formed via the current and the voltage drop across the actuator and compared with a setpoint value, whereby the charging process is aborted if the integral value exceeds the setpoint value.
  • the power output stage usually includes a DC-DC converter (DC / DC) whose performance can not be increased arbitrarily from a cost point of view and because of the available installation space. From the mentioned upper speed limit, the drive power of the DC / DC converter is no longer sufficient to compensate for the energy dissipated in the piezoelectric actuators. In addition, the control unit can assume inadmissibly high temperatures due to the heating of the DC / DC converter.
  • DC / DC DC-DC converter
  • This object is achieved in an operating method for an internal combustion engine of the aforementioned type according to the invention in that the drive signal is changed in response to a picked up by the piezoelectric actuator drive power.
  • the drive signal controlling a piezoelectric actuator is reduced relative to a reference value, the mechanical expansion of the corresponding piezoelectric actuator and thus the needle lift of the corresponding injection valve are also reduced.
  • the loss energy converted in the piezoelectric actuator at a smaller needle stroke is smaller than when the actuator is driven with the reference value, so that when using the operating method according to the invention also a smaller amount of thermal energy is dissipated by the actuator.
  • the energy dissipated in the power output stage is reduced, which also lowers the temperature of the control unit.
  • the injection time must be increased accordingly to allow for the application of the inventive method with reduced needle stroke to inject the same amount of fuel into a combustion chamber of the internal combustion engine as with a conventional control.
  • a limit for a minimum needle stroke or a corresponding minimal drive signal is set.
  • Another, very particular advantage of the operating method according to the invention is the possibility of an increase in the power of the internal combustion engine, which results from the fact that the upper speed limit for multiple injections compared to conventional methods is increased.
  • a predefinable maximum drive power reduces the drive signal to a maximum value.
  • the maximum drive power corresponds for example to a predetermined maximum speed of the internal combustion engine with multiple injection.
  • a particularly simple embodiment of the method according to the invention is characterized in that the maximum value is a constant.
  • the drive signal for the piezoelectric actuator is set to the constant maximum value when the predeterminable maximum drive power or a corresponding maximum speed is exceeded.
  • the maximum value is selected as a function of a characteristic which is stored, for example, in a memory of the control unit.
  • the characteristic curve, as well as the constant maximum value, can be applied, so that a change of the relevant values is possible even after the initial startup of the internal combustion engine.
  • the maximum drive power is preferably applied to increase the flexibility.
  • the drive power received by the piezoelectric actuator is calculated from operating variables of the internal combustion engine. That way is one Monitoring the required for the operation of the actuator drive power possible, the drive power can be determined only from variables that are all present in the control unit of the internal combustion engine, namely: the energy loss of the actuator per needle stroke, the number of injections per cycle and the speed of the internal combustion engine.
  • the drive power picked up by the piezoelectric actuator is detected metrologically. For this purpose, for example, the amount of charge flowing to the piezoelectric actuator and the corresponding charging time and possibly other variables are detected.
  • an internal combustion engine controller having at least one injector associated with a piezoelectric actuator urged by the controller with a drive signal to effect a needle lift of a valve needle of the fuel injector corresponding to the drive signal ,
  • the drive signal can be changed as a function of a drive power received by the piezoelectric actuator.
  • the computer program is suitable for carrying out the method according to the invention.
  • the computer program is advantageously stored on an electrical storage medium, in particular on a flash memory or a read-only memory.
  • FIG. 1 shows an embodiment of the method according to the invention, which is used in an internal combustion engine 10 shown in phantom in FIG. 2 in order to increase a maximum rotational speed and thus also a maximum power of the internal combustion engine 10.
  • the internal combustion engine 10 has injection valves 30a, 30b, 30c which inject fuel from a fuel manifold 26 directly into combustion chambers 32a, 32b, 32c of the cylinders 33a, 33b, 33c.
  • the injection valves 30 a, 30 b, 30 c are controlled by a control unit 34 of the internal combustion engine 10.
  • FIG. 3 The exact structure of the injection valves 30a, 30b, 30c is shown in FIG. 3, in which an injection valve 30 is shown by way of example.
  • Each of the injection valves 30a, 30b, 30c has a piezoelectric actuator 58, which has a Valve needle 44 of the respective injection valve 30a, 30b, 30c drives.
  • valve needle 44 which is also referred to as needle lift, is proportional to a drive signal applied to the piezoelectric actuator 58 by the control unit 34 (FIG. 2) of the internal combustion engine 10 via the lines 70 (FIG. 3).
  • the drive signal is generated within the controller 34 by a DC / DC converter (not shown), which supplies in the present case, all the piezoelectric actuators 58 of the injection valves 30a, 30b, 30c ( Figure 2) of the internal combustion engine 10 with the drive signal. Since the piezoelectric actuators 58 are components with essentially capacitive properties, an amount of electrical charge proportional to the drive signal flows to / from the actuators (s) 58 when driven by the drive signal.
  • the electrical energy to be applied by the DC / DC converter for controlling the piezoelectric actuators 58 results from the product of the number of cylinders 33a, 33b, 33c of the internal combustion engine 10, the power loss of an actuator 58 in dependence From the needle stroke, the number of activations of the actuator 58 per injection cycle and the speed of the internal combustion engine 10th
  • a drive power corresponding to the total control energy is evaluated, that of the piezoelectric actuators 58 of the injection valves 30a, 30b, 30c of the internal combustion engine 10 is received to move the valve needle 44 of the respective injection valve 30a, 30b, 30c.
  • the DC / DC converter contained in the control unit 34 can provide the total drive energy in the time specified by the speed of the internal combustion engine 10, which in step 120 of Figure 1 by comparing the actually picked up by the actuators 58 drive power with an applicable, predetermined maximum Control power is queried, the specification of the needle lift of the injection valves 30a, 30b, 30c according to the subsequent step 130 in a conventional manner, ie The maximum needle stroke of the valve needles 44 is predetermined by the drive signal.
  • step 150 the injection of fuel into the combustion chambers 32a, 32b, 32c of the cylinders 33a, 33b, 33c takes place (FIG. 2).
  • the piezoelectric actuators 58 become in accordance with the present invention is no longer conventionally driven, but it is, as seen in Figure 1, first branched into the query step 140.
  • the piezoelectric actuators 58 are driven by the query 140 with a reduced drive signal, resulting in a reduced needle lift and thus a lower total drive energy.
  • the drive time is extended accordingly.
  • step 140 the control unit 34 of the internal combustion engine 10 polls a status flag indicating how the needle lift of the injection valves 30a, 30b, 30c should be limited.
  • the drive signal can be set to a constant maximum value in step 142.
  • the constant maximum value and the characteristic are applicable, so that adjustments of the stored values are possible at any time.
  • step 130 injection of fuel into the combustion chambers 32a, 32b, 32c of the cylinders 33a, 33b, 33c takes place according to step 150 after the specification of the activation signal in one of the steps 142, 144.
  • the internal combustion engine 10 can be operated at a higher speed using the inventive control with reduced needle lift, without the Total drive energy to be applied by the DC / DC converter assumes impermissibly high values. In this case, there is a performance increase of the internal combustion engine 10.

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)
  • Fuel-Injection Apparatus (AREA)

Claims (9)

  1. Procédé de gestion d'un moteur à combustion interne (10) comportant au moins un injecteur (30) équipé d'un organe d'actionnement piézo-électrique (58) recevant un signal de commande d'un appareil de commande (34) du moteur à combustion interne (10), cet organe produisant une course de l'aiguille (44) de l'injecteur (30) correspondant au signal de commande pour effectuer une injection de carburant,
    le signal de commande étant modifié en fonction de la puissance de commande absorbée par l'organe d'actionnement piézo-électrique (58),
    caractérisé en ce qu'
    en dépassant une puissance de commande maximale prédéfinie, on réduit le signal de commande à une valeur maximale.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    la valeur maximale est une constante.
  3. Procédé selon la revendication 1,
    caractérisé en ce que
    la valeur maximale est choisie en fonction d'une courbe caractéristique.
  4. Procédé selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce qu'
    on applique la puissance de commande maximale et/ou la valeur maximale et/ou la courbe caractéristique de la valeur maximale.
  5. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce qu'
    on calcule la puissance de commande reçue par l'organe d'actionnement piézo-électrique (58) à partir des paramètres de fonctionnement du moteur à combustion interne (10).
  6. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce qu'
    on saisit par une technique de mesure la puissance de commande reçue par l'organe d'actionnement piézo-électrique (58).
  7. Appareil de commande (34) d'un moteur à combustion interne (10) comportant au moins un injecteur (30) équipé d'un organe d'actionnement piézo-électrique (58) recevant un signal de commande fourni par l'appareil de commande (34), cet organe d'actionnement commandant une course de l'aiguille (44) de l'injecteur (30) en fonction du signal de commande pour produire une injection de carburant, le signal de commande étant modifié en fonction de la puissance de commande reçue par l'organe d'actionnement piézo-électrique (58),
    caractérisé en ce qu'
    en cas de dépassement d'une puissance de commande maximale prédéfinie, on réduit le signal de commande à une valeur maximale.
  8. Programme d'ordinateur pour un appareil de commande (34) d'un moteur à combustion interne (10) ayant au moins un injecteur (30) comportant un organe d'actionnement piézo-électrique (58) recevant un signal de commande d'un appareil de commande (34), cet organe d'actionnement produisant une course de l'aiguille (44) de l'injecteur (30) correspondant au signal de commande pour effectuer une injection de carburant,
    caractérisé en ce que
    le programme d'ordinateur est conçu pour exécuter le procédé selon l'une quelconque des revendications 1 à 6.
  9. Programme d'ordinateur selon la revendication 8,
    caractérisé en ce qu'
    il est enregistré dans un support de mémoire électrique notamment une mémoire flash ou une mémoire morte.
EP03793447A 2002-09-03 2003-07-07 Procede permettant de faire fonctionner un moteur a combustion interne Expired - Lifetime EP1537318B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2002140493 DE10240493A1 (de) 2002-09-03 2002-09-03 Verfahren zum Betrieb einer Brennkraftmaschine
DE10240493 2002-09-03
PCT/DE2003/002254 WO2004022957A1 (fr) 2002-09-03 2003-07-07 Procede permettant de faire fonctionner un moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1537318A1 EP1537318A1 (fr) 2005-06-08
EP1537318B1 true EP1537318B1 (fr) 2007-09-26

Family

ID=31502282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03793447A Expired - Lifetime EP1537318B1 (fr) 2002-09-03 2003-07-07 Procede permettant de faire fonctionner un moteur a combustion interne

Country Status (5)

Country Link
EP (1) EP1537318B1 (fr)
JP (1) JP2005537431A (fr)
DE (2) DE10240493A1 (fr)
ES (1) ES2291732T3 (fr)
WO (1) WO2004022957A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004012428A1 (de) * 2003-09-23 2005-04-28 Bosch Gmbh Robert Verfahren, Computerprogramm und Vorrichtung zum Betreiben einer Brennkraftmaschine
ATE548550T1 (de) 2007-10-04 2012-03-15 Delphi Tech Holding Sarl Verfahren zum steuern einer kraftstoffeinspritzvorrichtung
DE102009052487B4 (de) 2009-11-09 2019-10-10 Continental Automotive Gmbh Verfahren zum Betreiben eines Steuergerätes für eine Brennkraftmaschine
DE102010042844B4 (de) 2010-10-25 2022-02-03 Robert Bosch Gmbh Verfahren zur Überwachung eines Steuergeräts für eine Einspritzanlage in einem Kraftfahrzeug

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04128518A (ja) * 1990-09-18 1992-04-30 Toyota Motor Corp 内燃機関用燃料供給ポンプ制御装置
DE19644521A1 (de) * 1996-10-25 1998-04-30 Siemens Ag Verfahren und Vorrichtung zum Ansteuern eines kapazitiven Stellgliedes
EP1139449A1 (fr) * 2000-04-01 2001-10-04 ROBERT BOSCH GmbH Système d'injection de carburant
DE10106170A1 (de) * 2001-02-10 2002-08-14 Bosch Gmbh Robert Verfahren und Vorrichtung zur Ansteuerung eines Einspritzventils

Also Published As

Publication number Publication date
ES2291732T3 (es) 2008-03-01
EP1537318A1 (fr) 2005-06-08
JP2005537431A (ja) 2005-12-08
WO2004022957A1 (fr) 2004-03-18
DE50308287D1 (de) 2007-11-08
DE10240493A1 (de) 2004-03-11

Similar Documents

Publication Publication Date Title
EP1381764B1 (fr) Procede et dispositif pour commander un piezo-actionneur
DE60034709T2 (de) Steuerungsvorrichtung für einen elektromagnetischen Verbraucher mit variabel Antriebs- und Start-Energieversorgung
DE102007000288B4 (de) Kraftstoffeinspritzsteuervorrichtung
DE19913477A1 (de) Verfahren zum Betreiben einer Kraftstoffzuführeinrichtung einer Brennkraftmaschine insbesondere eines Kraftfahrzeugs
EP1423594B1 (fr) Procede et dispositif de commande pour soupapes d'injection de carburant a actionnement piezo
EP1688606B1 (fr) Méthod d'augmentation de la gamme de réglages pour l'équilibrage de la quantité d'injection
DE10144275A1 (de) Verfahren zur Temperaturregelung eines Motors
DE102009003214A1 (de) Verfahren zum Betreiben eines Kraftstoffeinspritzventils einer Brennkraftmaschine und Steuergerät für eine Brennkraftmaschine
EP2180168A2 (fr) Procédé et dispositif de commande d'un injecteur de carburant
DE10123372A1 (de) Verfahren zur Ansteuerung eines piezoelektrischen Aktors, der der Verschiebung eines Elements dient
EP1537318B1 (fr) Procede permettant de faire fonctionner un moteur a combustion interne
DE10311141B4 (de) Verfahren, Computerprogramm, Speichermedium und Steuer- und/oder Regelgerät zum Betreiben einer Brennkraftmaschine, sowie Brennkraftmaschine insbesondere für ein Kraftfahrzeug
DE112018004769T5 (de) Verbrennungskraftmaschinensteuerungssystem
DE102016202306A1 (de) Verfahren zum Betreiben eines elektrifizierten Kraftfahrzeugs
DE10303573B4 (de) Verfahren, Computerprogramm, Speichermedium und Steuer- und/oder Regelgerät zum Betreiben einer Brennkraftmaschine, sowie Brennkraftmaschine insbesondere für ein Kraftfahrzeug
DE102005047590A1 (de) Verfahren zum Betrieb einer Brennkraftmaschine in einem Fahrzeug
DE102009001453B4 (de) Glühkerzensteuerungsvorrichtung und Glühkerzensteuerungssystem
DE102007058540B4 (de) Verfahren und Vorrichtung zum Laden und Entladen eines piezoelektrischen Elements
DE102020208097A1 (de) Kraftstoffeinspritz-steuervorrichtung zur verbesserung der abweichung der injektor-öffnungszeit
DE10330824B4 (de) Motorsteuersystem
DE102010042844B4 (de) Verfahren zur Überwachung eines Steuergeräts für eine Einspritzanlage in einem Kraftfahrzeug
DE102014216521A1 (de) Verstärkungsenergieversorgungsvorrichtung
DE102017218333A1 (de) Verfahren und Vorrichtung zur Ansteuerung eines Nockenwellenverstellers
DE102005009737A1 (de) Verfahren und Vorrichtung zum Schutz eines Motor-Steuergerätes
DE102006038846A1 (de) Verfahren und Vorrichtung zur Ermittlung des Aktorzustandes eines Piezoinjektors einer Brennkraftmaschine eines Kraftfahrzeugs im Fahr/Schubbetrieb

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20050404

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR IT

RBV Designated contracting states (corrected)

Designated state(s): DE ES FR IT

REF Corresponds to:

Ref document number: 50308287

Country of ref document: DE

Date of ref document: 20071108

Kind code of ref document: P

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2291732

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20080627

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100707

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20150723

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20150730

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20150728

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20160927

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160801

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20170331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160707

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50308287

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160708

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20181130