EP2386021A1 - Procédé permettant de faire fonctionner un système d'injection de carburant - Google Patents

Procédé permettant de faire fonctionner un système d'injection de carburant

Info

Publication number
EP2386021A1
EP2386021A1 EP09764832A EP09764832A EP2386021A1 EP 2386021 A1 EP2386021 A1 EP 2386021A1 EP 09764832 A EP09764832 A EP 09764832A EP 09764832 A EP09764832 A EP 09764832A EP 2386021 A1 EP2386021 A1 EP 2386021A1
Authority
EP
European Patent Office
Prior art keywords
valve
determined
corresponding size
injection valve
delay time
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
EP09764832A
Other languages
German (de)
English (en)
Other versions
EP2386021B1 (fr
Inventor
Klaus Joos
Ruben Schlueter
Jens Neuberg
Helerson Kemmer
Holger Rapp
Haris Hamedovic
Joerg Koenig
Anh-Tuan Hoang
Bernd Wichert
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 EP2386021A1 publication Critical patent/EP2386021A1/fr
Application granted granted Critical
Publication of EP2386021B1 publication Critical patent/EP2386021B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • F02D2041/2037—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit for preventing bouncing of the valve needle
    • 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
    • F02D2041/2055—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit with means for determining actual opening or closing time
    • 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
    • F02D41/32—Controlling fuel injection of the low pressure type
    • F02D41/34—Controlling fuel injection of the low pressure type with means for controlling injection timing or duration
    • 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
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
    • F02D41/401—Controlling injection timing

Definitions

  • the invention relates to a method for operating a fuel injection system according to the preamble of claim 1.
  • the invention further relates to a computer program, an electrical storage medium and a control and / or regulating device.
  • valve needle consists of an electromagnetic actuator, which is a substantially
  • Magnetic coil and a magnet armature is actuated.
  • the valve closure causes a perceptible noise.
  • the main reason for this is the rapid impact of the valve element in the associated seat of the injection valve.
  • DE 101 48 218 A1 proposes to generate a short braking pulse to decelerate the valve element before reaching the valve seat.
  • the object of the invention is to develop a method of the type mentioned, in which the fuel injection system, in particular when closing the injector, operates very quietly, without this being the case
  • Loads of a metering accuracy of the injection valve is.
  • the object is achieved by a method having the features of claim 1, and by a computer program, an electrical storage medium and a control and / or regulating device with the features of the independent claims.
  • Features which are important for the invention can also be found in the following description and in the drawing, wherein the features, both alone and in different combinations, can be important for the invention without any explicit reference being made thereto.
  • Advantageous developments can be found in the subclaims.
  • the braking pulse causes the structure of a braking force and thus allows a gentle placement of the valve element in the seat.
  • the braking pulse usually results from a braking current pulse in the solenoid.
  • the injection valves have a different closing dynamics (due to specimen scatters, for example, a closing spring force, a valve needle stroke or a magnetic force curve) and therefore react differently to the braking current pulse.
  • the structure of the brake current pulse in injectors with a rather long closing delay time is still carried out at a comparatively large valve needle and correspondingly low valve element speed. Injectors with a low closing delay time at the time of
  • valve element already a considerable impulse (high valve element speed) and would be slowed down as a result, with the same braking current pulse only slightly.
  • closing delay time may depend on the operating point of the injectors. All of this affects the valve opening duration, which results in the same brake current pulse being able to cause variations in the fuel injection quantity depending on the model.
  • the closing speed of the injection valve is changed such that the valve element reliably and largely independent of manufacturing tolerances and the current
  • Operating point with reduced speed at the valve seat of the fuel injection valve can put on.
  • the closing delay time for determining the desired injection quantity
  • other operating variables such as, for example, the valve opening duration or an electrical variable for actuating the valve element.
  • the method can be used for one-part and multi-part armature. Different methods are already known for determining the closing delay time.
  • the time of the actual closing of the valve element can be detected by structure-borne noise measurements and then at the time of a switching off of a drive signal for
  • the inventive method thus reduces the disturbing noise when driving the valve element into the seat and ensures the required metering accuracy.
  • Parameter of the braking pulse is a temporal position, a duration and / or an amplitude is / are.
  • the brake current pulse in injectors with a short closing delay time can be closer to the driving end in time and be impressed with a higher amplitude in the solenoid of the injection valve as injection valves with a long closing delay.
  • a valve opening duration or a corresponding variable is determined.
  • valve opening duration or the corresponding variable is set as a function of a desired injection quantity. It is thus possible for the valve opening duration (or the corresponding variable) influenced by the brake current pulse to be fed to a controller and adjusted by means of a known method to a setpoint value of the valve opening duration which is dependent on the desired injection quantity.
  • An easy way to generate the braking pulse is that a positive voltage to the solenoid of the electromagnetically actuated
  • Injection valve is applied. This will cause the during the closing process Magnetic force already decaying increases again at a time determined by the control and / or regulating device, thereby actively establishing a braking force for the injection valve.
  • the positive voltage can be tapped either from the electrical system or from a charged to a higher voltage level boost capacitor.
  • the brake pulse may also be generated by shorting the solenoid of the solenoid operated injector. Shortcircuiting corresponds in circuit terms to a free-wheeling of the output stage of the control and / or regulating device. This eddy currents commute from the
  • the closing time for example, the detection of the closing time is necessary.
  • the closing time (or the corresponding size) can be determined by the closing time on the
  • the brake current pulse is already completed at the time of the magnetic armature closing, so that the detection of the closing time can take place via the course of the voltage at the magnetic coil, which is still effective and thus measurable at the time of magnet armature closing.
  • the closing time (or the corresponding amount) can be determined by determining the closing time on the basis of a waveform of the current in the solenoid, since the braking current at the time of closing the armature is still effective and thus measurable.
  • the closing time (or the corresponding size) can be determined by determining the closing time using a distance observer. Regardless of the duration of the brake current pulse, a determination of the closing time over the
  • Track observers take place, with the track observer recording one electrical magnitude (eg, the magnetic coil voltage) with at least indirectly observes an electrical variable to be observed (eg solenoid coil current) and draw conclusions about the closing time.
  • one electrical magnitude eg, the magnetic coil voltage
  • an electrical variable to be observed eg solenoid coil current
  • Figure 1 is a schematic representation of a fuel injection valve in vertical section
  • FIG. 2 shows a greatly simplified flow and valve needle lift course of the fuel injection valve from FIG. 1 with and without brake pulse
  • FIG. 3 shows a flow chart of the method according to the invention.
  • a fuel injection valve as a whole carries the reference numeral 1. It may, for example, be installed in an internal combustion engine of a motor vehicle with a common rail for the direct injection of fuel into a combustion chamber (not shown). It comprises an electromagnetic actuator 2 and a
  • Valve element forming valve needle 3 which cooperates with a valve seat 4.
  • a spring element 5 arranged around the valve needle 3 presses the valve needle 3 into the valve seat 4 with its spring force.
  • the electromagnetic actuating device 2 comprises a magnet armature 6, which in the present exemplary embodiment is firmly connected to the valve needle 3, and a magnet coil 7.
  • the magnet coil 7 becomes energized by a control and regulating device 8 and a power stage, not shown.
  • an electromagnetic field is generated by energizing the magnetic coil 7, the magnetic
  • valve needle and the magnet armature can also be made in two parts (not shown).
  • FIG. 2 shows an upper diagram of a time course of a drive current I and in a lower diagram thereby caused a stroke H of the valve needle 3.
  • the course of the drive current I shows a first rapid increase (see reference numeral 10) of the current I, which then over is kept constant for a certain period of time, and then drops about halfway (see reference numeral 12). This current level is held until the end of the control period t. At the end of the control period t, the current I is switched off (see reference numeral 14).
  • the first scenario is represented by a solid line
  • the second scenario by a dotted line and by a time period t v forward in time.
  • a short current pulse 16 or 16 starts at a time interval t from the control end x ', ie, the time t x determines the temporal position of the current pulse 16 from the control end.
  • the amplitude, the time position and the length of the current or braking pulse are shown here by way of example and can vary in real operation depending on a valve delay time. A closer description will be given later.
  • Opening delay time tu lifts (see reference numeral 18). Has reached its maximum stroke 3 after the time ti, the valve needle is sufficient to maintain this level a smaller current I. If the driving current I at the end of the activation duration t, switched off, the valve needle 3 begins after a closing delay time t 2 i to reduce (reference numeral 20). During the
  • the current pulse 16 (brake current pulse) sets in, which reduces the lowering speed of the valve needle 3 by the fact that a magnetic force is generated by it, which counteracts the lowering movement of the valve needle 3.
  • the valve needle 3 lowers gently into the valve seat 4, which leads to a desired noise reduction.
  • a closing time is shifted, ie a valve opening period T op is thus extended by the time t a .
  • the movement of the valve needle 3 would have a course (shown in an idealized manner) similar to the dashed line 22.
  • the injection would have ended in the intended valve opening duration T op .
  • the extension time t a is regulated by a control loop, so that despite the action of the brake current pulse 16, the setpoint
  • Valve opening duration T op can be met.
  • FIG. 3 shows a flow chart of the method according to the invention.
  • the illustrated sequence is to be applied individually for each injection valve of a motor vehicle in the control and regulating device 8.
  • the method works as follows:
  • the control and regulating device 8 determines in step 50 a control start and a drive end to a desired valve opening period T op of the injection valve. 1
  • the individual closing delay time t 2 i of the injection valve 1 is determined.
  • the Sch thoroughlyver convincedszeit t 2 i is of Exemplarstreuungen, eg. A closing spring force, a
  • step 70 the temporal position (time), the duration and the amplitude of the brake current pulse 16 are determined by evaluating the closing delay time t 2 i.
  • the braking current pulse 16 occurs at an injection valve
  • the brake current pulse 16 results in an extension of the valve opening duration T op (see time t a ).
  • the prolonged valve opening duration (T op + t a ) triggered by the braking current pulse 16 is regulated by a control loop to the previously determined desired value.
  • the result of the compensation is shown dotted in FIG. This is the Control end of the valve needle 3 advanced by the determined time t v (see upper diagram). This means that the drive signal and thus the drive time t, is shortened (see edge 14 '). Since the brake current pulse 16 follows in the previously determined time interval t x to the drive end, the brake current pulse 16 'is also advanced.
  • the drive duration t x is shortened so that the closing end of the valve needle 3 falls exactly on the determined timing of the target valve opening duration T op.
  • the required metering accuracy is achieved.

Abstract

La présente invention concerne un procédé permettant de faire fonctionner un système d'injection de carburant, le carburant provenant d'une soupape d'injection (1) actionnée de manière électromagnétique atteignant au moins une chambre de combustion du moteur à combustion interne, et le mouvement d'un élément de soupape (3) de la soupape d'injection (1) étant influencé au moins par moments par une impulsion de freinage (16) électromagnétique. Un délai de fermeture de la soupape d'injection (1) ou une grandeur correspondante est déterminé et le délai de fermeture déterminé ou la grandeur correspondante est utilisé pour définir au moins un paramètre de l'impulsion de freinage (16).
EP09764832A 2009-01-09 2009-12-04 Procédé permettant de faire fonctionner un système d'injection de carburant Active EP2386021B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910000132 DE102009000132A1 (de) 2009-01-09 2009-01-09 Verfahren zum Betreiben eines Kraftstoffeinspritzsystems
PCT/EP2009/066446 WO2010079027A1 (fr) 2009-01-09 2009-12-04 Procédé permettant de faire fonctionner un système d'injection de carburant

Publications (2)

Publication Number Publication Date
EP2386021A1 true EP2386021A1 (fr) 2011-11-16
EP2386021B1 EP2386021B1 (fr) 2012-10-10

Family

ID=41557424

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09764832A Active EP2386021B1 (fr) 2009-01-09 2009-12-04 Procédé permettant de faire fonctionner un système d'injection de carburant

Country Status (4)

Country Link
EP (1) EP2386021B1 (fr)
CN (1) CN102272436B (fr)
DE (1) DE102009000132A1 (fr)
WO (1) WO2010079027A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016062493A1 (fr) * 2014-10-21 2016-04-28 Robert Bosch Gmbh Dispositif pour assurer la commande d'au moins une soupape commutable
US10989131B2 (en) 2016-06-13 2021-04-27 Vitesco Technologies GmbH Method and device for determining energization data for an actuator of an injection valve of a motor vehicle

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DE102009045309B4 (de) * 2009-10-02 2020-02-06 Robert Bosch Gmbh Verfahren und Steuergerät zum Betreiben eines Ventils
DE102009045581A1 (de) * 2009-10-12 2011-04-14 Robert Bosch Gmbh Schaltung zum Betreiben eines Magnetventils
DE102010014825A1 (de) * 2010-04-13 2011-10-13 Continental Automotive Gmbh Verfahren zum Betrieb eines Einspritzsystems und ein Einspritzsystem, welches ein Einspritzventil und eine Steuervorrichtung aufweist
DE112011104212A5 (de) * 2010-10-28 2013-09-12 Schaeffler Technologies AG & Co. KG Verfahren zur Steuerung eines Stellgliedes oder Ventils
DE102011075270A1 (de) * 2011-05-04 2012-11-08 Continental Automotive Gmbh Verfahren und Vorrichtung zum Steuern eines Ventils
JP5639970B2 (ja) * 2011-08-03 2014-12-10 日立オートモティブシステムズ株式会社 電磁弁の制御方法、高圧燃料供給ポンプの電磁吸入弁の制御方法および電磁吸入弁の電磁駆動機構の制御装置
JP5572604B2 (ja) * 2011-08-31 2014-08-13 日立オートモティブシステムズ株式会社 燃料噴射弁の制御装置
EP2574764A1 (fr) 2011-09-30 2013-04-03 Delphi Automotive Systems Luxembourg SA Détermination de la vitesse d'une aiguille d'injecteur d'un injecteur de carburant à solénoïde et procédé de contrôle
DE102014202096A1 (de) * 2014-02-05 2015-08-06 Continental Automotive Gmbh Verfahren zum Betrieb eines Einspritzventils sowie Verfahren zum Betrieb mehrerer Einspritzventile
DE102014203538A1 (de) * 2014-02-27 2015-08-27 Robert Bosch Gmbh Verfahren zur geräuschmindernden Steuerung von schaltbaren Ventilen, insbesondere von Einspritzventilen einer Brennkraftmaschine eines Kraftfahrzeugs
DE102015207274A1 (de) * 2015-04-22 2016-10-27 Robert Bosch Gmbh Verfahren zur geräuschmindernden Ansteuerung von schaltbaren Ventilen, insbesondere von Einspritzventilen einer Brennkraftmaschine eines Kraftfahrzeugs
DE102015212666A1 (de) * 2015-07-07 2017-01-12 Continental Automotive Gmbh Verbesserte Ansteuerung eines Kraftstoffinjektors während eines Schließvorgangs
DE102016218515A1 (de) 2016-09-27 2018-03-29 Robert Bosch Gmbh Verfahren zur Steuerung von schaltbaren Ventilen, insbesondere von Einspritzventilen einer Brennkraftmaschine eines Kraftfahrzeugs
DE102021101335A1 (de) * 2021-01-22 2022-07-28 Amazonen-Werke H. Dreyer SE & Co. KG Verfahren zum Ansteuern eines zur Durchflussmengensteuerung eingesetzten Magnetventils einer landwirtschaftlichen Ausbringmaschine
DE102021203773A1 (de) 2021-04-16 2022-10-20 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zur Ansteuerung eines elektromagnetisch ansteuerbaren Gasventils, Steuergerät, Computerprogramm und Computerprogrammprodukt
DE102021204097A1 (de) 2021-04-26 2022-10-27 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zur Ansteuerung eines elektromagnetisch ansteuerbaren Gasventils, Steuergerät, Computerprogramm und Computerprogrammprodukt
DE102022209912A1 (de) * 2022-09-21 2024-03-21 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zum Betreiben eines Gasinjektors

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DE10148218B4 (de) 2001-09-28 2005-08-25 Robert Bosch Gmbh Verfahren zum Betreiben einer Brennkraftmaschine, Computerprogramm, Steuer- und/oder Regelgerät, sowie Kraftstoffsystem für eine Brennkraftmaschine
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JP4515729B2 (ja) * 2003-01-30 2010-08-04 株式会社デンソー 燃料噴射装置
DE102006043677A1 (de) * 2005-12-12 2007-06-14 Robert Bosch Gmbh Verfahren zur Ansteuerung eines Magnetventils
DE102007023898A1 (de) * 2007-05-23 2008-11-27 Robert Bosch Gmbh Verfahren zum Ansteuern eines Einspritzventils

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016062493A1 (fr) * 2014-10-21 2016-04-28 Robert Bosch Gmbh Dispositif pour assurer la commande d'au moins une soupape commutable
US10865727B2 (en) 2014-10-21 2020-12-15 Robert Bosch Gmbh Device for controlling at least one switchable valve
US10989131B2 (en) 2016-06-13 2021-04-27 Vitesco Technologies GmbH Method and device for determining energization data for an actuator of an injection valve of a motor vehicle

Also Published As

Publication number Publication date
EP2386021B1 (fr) 2012-10-10
WO2010079027A1 (fr) 2010-07-15
CN102272436B (zh) 2013-12-25
CN102272436A (zh) 2011-12-07
DE102009000132A1 (de) 2010-07-15

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