WO2011131467A2 - Procédé pour faire fonctionner un moteur à combustion interne selon lequel une vanne magnétique est actionnée pour injecter du carburant - Google Patents

Procédé pour faire fonctionner un moteur à combustion interne selon lequel une vanne magnétique est actionnée pour injecter du carburant Download PDF

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Publication number
WO2011131467A2
WO2011131467A2 PCT/EP2011/055018 EP2011055018W WO2011131467A2 WO 2011131467 A2 WO2011131467 A2 WO 2011131467A2 EP 2011055018 W EP2011055018 W EP 2011055018W WO 2011131467 A2 WO2011131467 A2 WO 2011131467A2
Authority
WO
WIPO (PCT)
Prior art keywords
phase
voltage source
coil
internal combustion
boost
Prior art date
Application number
PCT/EP2011/055018
Other languages
German (de)
English (en)
Other versions
WO2011131467A3 (fr
Inventor
Matthias Siedentopf
Thomas Wuerzbach
Andreas Schmitt
Bernd Wichert
Markus Krieg
Markus Rueckle
Erik Tonner
Edgar Gfroerer
Matthias Schnell
Andreas Mueller
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 WO2011131467A2 publication Critical patent/WO2011131467A2/fr
Publication of WO2011131467A3 publication Critical patent/WO2011131467A3/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings

Definitions

  • a method of operating an internal combustion engine wherein a solenoid valve is actuated for injecting fuel
  • the invention relates to a method according to the preamble of claim 1, and a computer program and a control and / or regulating device according to the independent claims.
  • boost phase a first phase of their control to a boost voltage, so that a particularly high first current in a magnetic coil (coil) to reach a maximum value once.
  • the boost phase usually marks the beginning of an anchor movement as one
  • the boost voltage is generated for example from a DC-DC converter from a vehicle battery and can thus be much higher than the battery voltage, so that a correspondingly higher first current flows in the coil. As a result, an armature of the solenoid valve can be accelerated more.
  • the boost voltage is stored in a so-called boost capacitor.
  • the coil In a directly following the first current increase phase of the activation (tightening phase), the coil is switched to the opposite of the boost voltage smaller battery voltage to perform a residual armature movement.
  • the tightening phase provides the anchor motion approximately until a maximum anchor stroke is reached.
  • the suit phase is followed by a third phase (holding phase).
  • the coil is optionally with a further and compared to the first two phases operated smaller power. For controlling in the holding phase but also the battery voltage is used.
  • the holding phase ensures that the anchor remains approximately at a constant stroke.
  • Phases either permanently put on a voltage, or to clock the coil in the manner of a two-point controller, so that can set a desired average current over a respective duty cycle.
  • the invention has the advantage that a solenoid valve for injecting fuel (injection valve) can be operated at least temporarily with a higher current during a tightening phase, without the need for additional devices or constructive measures.
  • the invention is based on the consideration that, depending on a particular operating situation of the internal combustion engine, it may be necessary to energize a coil of the solenoid valve more strongly during a starting phase than is possible on the basis of a battery voltage and a resistance and an inductance of the coil per se would. Because the parameters of the coil are fixed, according to the invention, during the attraction phase of the solenoid valve, the coil is alternatively switched to the boost voltage which is higher than a standard voltage source (battery voltage), so that a current through the coil which is higher than a standard operating event is independent of external conditions to enable. It may be necessary to use the coil during the tightening phase to clock in the manner of a pulse width modulation or a two-point controller to prevent overloading of the coil. By such a higher current, for example, in some
  • the invention is particularly easy to apply when the circuit of the coil using at least one predetermined register set with a respective control profile contained therein takes place, and if the current
  • Such a register file consists for example of memory cells of a computer of a control and / or regulating device, and contains, for example, a sequence of control commands and / or of
  • a control profile can thus comprise the variables which are essential for the operation of the solenoid valve, in particular voltages, limit values for currents,
  • the invention is particularly useful if the current operating situation is defined by at least one of the following variables or events: a starting process of the internal combustion engine; a temperature of the solenoid valve and / or the internal combustion engine; a magnitude of the boost voltage and / or a magnitude of the at least one standard voltage. Especially during one of the following variables or events: a starting process of the internal combustion engine; a temperature of the solenoid valve and / or the internal combustion engine; a magnitude of the boost voltage and / or a magnitude of the at least one standard voltage. Especially during one
  • the method according to the invention can be applied particularly universally and at the same time differentiated, if the drive profiles each comprise at least two phases, wherein in each of the phases at least temporarily the coil can be switched to the boost voltage source and / or the at least one standard voltage source, or Coil can be operated in a freewheel.
  • the coil can be switched to a freewheel, that is, it is not actively energized, wherein an existing energy in the coil either lossy degraded or used, for example, to charge a boost capacitor.
  • a clocking in the manner of a two-point controller is possible.
  • the drive profiles comprise at least one lower and / or one upper switching threshold for at least one of the phases. This makes it advantageously possible to perform the control of the coil according to certain criteria, which can be specified by means of the switching thresholds.
  • the switching thresholds can be specified by means of the switching thresholds.
  • a further embodiment of the invention provides that the drive profiles the
  • Boost phase the pull-in phase and a holding phase of the solenoid valve, and that the phases are each associated with a lower and upper switching threshold for a current flowing through the coil, wherein depending on the switching thresholds, the coil to the boost voltage source and / or the at least one Standard voltage source is switched on, switched off or switched over or operated in a freewheel.
  • the three-phase switching thresholds are specified for the current flowing in the coil, so that the behavior of the coil or the solenoid valve can be adjusted particularly well. In particular, this can accurately control an energy supplied to the coil to both ensure the function of the injector and to prevent possible overloading of the coil. Also, the timing of the connection of the voltages whose
  • a particularly useful embodiment of the method is that a first set of registers has a drive profile in which the pull-in phase uses the boost voltage source and the switching thresholds of the boost phase, that at least one further set of registers has a drive profile, in which the pull-in phase comprises the at least one standard Voltage source and
  • Solenoid valve and / or internal combustion engine is below a first temperature threshold, is moved in a starting operation of the internal combustion engine as follows: (a) during the starting operation, the first register set is used; (b) after the end of the startup process and / or after exceeding a threshold for the standard voltage source is set to one of the further register sets with smaller currents for the pull-in phase
  • step (c) switches; optional: (c) with rising temperature or after a certain time has elapsed, switching to another register set with even smaller currents for the starting phase; (d) step (c) is repeated as needed; and (e) when a second temperature threshold is exceeded or after a certain time has elapsed, the system switches to the standard register set.
  • the coils of the solenoid valves are initially operated with comparatively high currents, and then by switching the
  • At least one timer is started and / or evaluated depending on the current operating situation, and that after a predetermined time of the at least one timer to a standard register set for at least one waiting time is switched. This can be in the case of a constantly low
  • Battery voltage overload of the control and / or regulating device or an overload of the injection valves can be prevented by at least one time long (waiting time) is switched to the standard register set.
  • the facilities of the internal combustion engine are spared and generated compared to the prior art, comparable injection quantities.
  • the starting of the timer can be done for example at the beginning or at the end of the starting process of the internal combustion engine. Also, the timer may be used in addition to or alternatively to the temperature of the engine and / or injectors to incrementally switch the register sets as described above.
  • the inventive method provides that a number of activations of the coil of the solenoid valve during use of the boost voltage source using a map is limited, and that depending on the selected drive profile and / or in the
  • Control profile described at least one additional map is used alternatively or additionally, and that input variables of the map, the boost voltage, the at least one standard voltage and / or a speed of the internal combustion engine. In this way, the number of times using the boost power source
  • the process can, so to speak, close to a
  • Figure 1 is a simplified diagram of an internal combustion engine with four
  • FIG. 2 shows a general first time diagram of a drive profile with a boost phase, a pull-in phase and a hold phase
  • FIG. 3 shows a second time diagram of a control profile with a greatly increased current compared with a standard control profile during the starting phase
  • FIG. 4 shows a third time diagram of a control profile with a reduced current compared with FIG. 3 during the starting phase
  • FIG. 5 shows a fourth time diagram of a control profile with a reduced current compared with FIG. 4 during the starting phase
  • FIG. 6 shows a fifth time diagram of a drive profile with one compared to FIG
  • FIG. 7 shows a sixth timing diagram with a standard drive profile
  • Figure 8 is an excerpt of a block diagram of a circuit for performing the method.
  • Figure 1 shows a highly simplified schematic of an internal combustion engine 10 with four cylinders 12a to 12d, four injectors 14a to 14d and associated coils 16a to 16d.
  • a control and / or regulating device 18 is arranged with a computer program 20 contained therein, which can energize the coils 16a to 16d by means of four lines 22a to 22d.
  • the control and / or regulating device 18 further comprises a map 23 and is fed on the one hand from a battery 24, which provides a standard voltage source 26, and from a boost capacitor 28, which provides a boost voltage source 30.
  • the boost capacitor 28 is charged by means of a DC-DC converter 32 from the battery 24 to a higher battery voltage against a boost voltage.
  • the terms "voltage source” and "voltage” are used synonymously.
  • control and / or regulating device 18 for supplying current to the coils 16a to 16d can access both the standard voltage source 26 and the boost voltage source 30. In this case, depending on a temperature 34, a timer 35, and a speed 36 of the
  • Figure 2 shows a timing diagram of a general An Kunststoffprofils 38 for an injection valve of the internal combustion engine 10.
  • the abscissa of the coordinate system shown a time between zero and 1300us (microseconds) is plotted.
  • a coil current is plotted in a range between zero and 16A (amperes).
  • From left to right, three areas are marked by the numbers 1, 2 and 3 as a boost phase 1, a starting phase 2 and a holding phase 3 during energization of the solenoid valve.
  • the presentation of the current corresponds to the prior art.
  • the function is explained below using numerical values. However, these are purely exemplary and, of course, may be completely different in other embodiments and operating situations.
  • the boost phase 1 a steep and approximately rectilinear increase in the coil current takes place in a period of time from zero to about 100 ⁇ s, the current being taken from the boost capacitor 28, which is used as a boost.
  • the boost phase 1 serves to anchor To start as fast as possible and to accelerate as much as possible.
  • the energization at the beginning of the tightening phase 2 is first turned off. There is a decay of the coil current up to a lower switching threshold 42 of about 9A. Then the power is turned on again, during the tightening phase 2 the
  • Standard voltage source 26 of the internal combustion engine 10 is used.
  • an upper switching threshold 44 of about 10A the coil current is switched off again, whereupon it continuously drops.
  • the lower switching threshold 42 of FIG. 9A this is in turn turned on and so forth.
  • the achievable in the tightening phase 2 coil current is essentially limited by a height of the battery voltage dependent standard voltage source 26 and a resistive coil resistance.
  • the tightening phase serves to maintain the anchor motion.
  • the switching thresholds set in the control and / or regulating device 18 may possibly deviate from the currents denoted in FIG. 2 and the following FIGS. 3 to 7. This is due to possible delays in the switching behavior of
  • the holding phase 3 following the tightening phase 2 differs in the present case from the tightening phase 2 by smaller coil currents or by correspondingly smaller threshold values. Above all, it serves to keep the armature and thus also the injection valve in an open position. On average, during the hold phase, a coil current of approximately 7A is generated using a lower switching threshold 46 of approximately 6.5A and an upper switching threshold 48 of approximately 7.5A. After holding phase 3, the coil current is completely switched off until the next cycle.
  • FIG. 3 shows, according to the invention, a first register set with a
  • the boost phase 1 ends at a time t1 of approximately 5.1 ms (milliseconds), the pull-in phase 2 at a time t2 of approximately 5.4 ms and the hold phase 3 at a time t3 of approximately 5.5 ms.
  • the higher coil current during the pull-up phase 2 is achieved by using, unlike in FIG. 2, the boost voltage source 30 instead of the standard voltage source 26 to drive the coils 16a to 16d.
  • a lower switching threshold 42 is about 12, 5A and an upper
  • Switching threshold is about 14.5 A and is therefore significantly higher in comparison to the standard current of FIG.
  • the boost phase 1 seamlessly merges into the tightening phase 2, from which it can be deduced that the respective injection valve 14a to 14d can open fast enough even with a cold and viscous fuel to inject a required amount of fuel.
  • the subsequent holding phase 3 has a mean coil current of approximately 6A and does not differ significantly from a standard energization of the coils 16a to 16d.
  • the control profile 38 shown in FIG. 3 is activated during a starting process of the internal combustion engine 10 and preferably at temperatures of the engine
  • Injectors 14a to 14d and the internal combustion engine 10 used which are below a predetermined threshold. However, it may be useful to keep the register set shown in FIG.
  • FIGS. 4 to 6 show register sets according to the invention with control profiles 38, such as may be used, for example, successively in time on the register set shown in FIG. 3 or the control profile 38 shown there. All embodiments according to FIGS. 4 to 6 have in common that the standard voltage source 26 is used during the starting phase 2 in order to energize the coils 16a to 16d.
  • the differences in the actuation profiles 38 of FIGS. 4 to 6 consist essentially in the fact that different values are used for the lower switching thresholds 42 and the upper switching thresholds 44, so that in each case different mean coil currents occur during the tightening phase 2. In the illustrations of FIGS. 4 to 6, these average coil currents amount to approximately 13.5A, 12A and 10A.
  • FIG. 7 shows a standard register set with a standard control profile, in addition to the representations of FIGS. 3 to 6.
  • Figure 8 shows an excerpt of a block diagram for the control of
  • Injectors 14a to 14d as in the control and / or regulating device 18th can be used.
  • a number of (unspecified) input variables are linked to a number of output variables (not explained in more detail) by means of Boolean or mathematical operations.
  • a block 54 in the middle of FIG. 8 describes four sets of registers or four control profiles 38 contained therein.
  • a block 56 is arranged, by means of which a voltage of the battery 24 determined in a block 58 can be taken into account.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un procédé pour faire fonctionner un moteur à combustion interne (10), selon lequel une vanne magnétique (14a-d) est actionnée pour injecter du carburant, une bobine (16a-d) de la vanne magnétique (14a-d) pouvant être connectée alternativement à au moins une source de tension standard (26) et pour une phase de surtension (1) à une source de surtension (30), la bobine (16a-d) étant connectée à la source de surtension (30) à la place de la source de tension standard (26) en fonction d'une situation de fonctionnement effective du moteur à combustion interne (10) pour une phase d'attraction (2) de la vanne magnétique (14a-d).
PCT/EP2011/055018 2010-04-20 2011-03-31 Procédé pour faire fonctionner un moteur à combustion interne selon lequel une vanne magnétique est actionnée pour injecter du carburant WO2011131467A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010027989.7 2010-04-20
DE201010027989 DE102010027989A1 (de) 2010-04-20 2010-04-20 Verfahren zum Betreiben einer Brennkraftmaschine, bei dem ein Magnetventil zum Einspritzen von Kraftstoff betätigt wird

Publications (2)

Publication Number Publication Date
WO2011131467A2 true WO2011131467A2 (fr) 2011-10-27
WO2011131467A3 WO2011131467A3 (fr) 2012-01-12

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DE (1) DE102010027989A1 (fr)
WO (1) WO2011131467A2 (fr)

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WO2021148225A1 (fr) * 2020-01-22 2021-07-29 Robert Bosch Gmbh Procédé de fonctionnement d'une soupape de réservoir à actionnement électromagnétique, programme informatique et dispositif de commande

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DE102013220613B4 (de) 2013-10-11 2024-03-14 Vitesco Technologies GmbH Verfahren und Computerprogramm zum Ansteuern eines Kraftstoffinjektors
DE102015101778A1 (de) * 2015-02-08 2016-08-11 Heinz Gödert Schaltungsanordnung zur Betätigung eines Magnetventils durch getaktete Ansteuerung
DE102015212115A1 (de) 2015-06-30 2017-01-05 Robert Bosch Gmbh Verfahren zur Ansteuerung eines Magnetventils eines Kraftstoffinjektors
DE102016202185A1 (de) 2016-02-12 2017-08-17 Robert Bosch Gmbh Verfahren zur Ansteuerung eines Magnetventils eines Kraftstoffinjektors
DE102016203196A1 (de) 2016-02-29 2017-08-31 Robert Bosch Gmbh Verfahren zur Ansteuerung eines Magnetventils eines Kraftstoffinjektors
DE102016219189B4 (de) * 2016-10-04 2023-07-06 Vitesco Technologies GmbH Bestimmen eines Magnetventil-Öffnungszeitpunktes
DE102016220961A1 (de) 2016-10-25 2018-04-26 Robert Bosch Gmbh Verfahren zur Ansteuerung eines Magnetventils eines Kraftstoffinjektors
GB2555869B (en) * 2016-11-15 2020-02-19 Cistermiser Ltd A control device for controlling the operation of a valve
DE102016222514A1 (de) 2016-11-16 2018-05-17 Robert Bosch Gmbh Verfahren zur Ansteuerung eines Magnetventils eines Kraftstoffinjektors
DE102016222508A1 (de) 2016-11-16 2018-05-17 Robert Bosch Gmbh Verfahren zur Ansteuerung eines Magnetventils eines Kraftstoffinjektors
DE102017200204A1 (de) 2017-01-09 2018-07-12 Robert Bosch Gmbh Verfahren zur Überprüfung eines Kraftstoffinjektors
DE102017200202A1 (de) 2017-01-09 2018-07-12 Robert Bosch Gmbh Verfahren zur Überprüfung eines Magnetventils eines Kraftstoffinjektors
DE102017211583A1 (de) 2017-07-06 2019-01-10 Robert Bosch Gmbh Verfahren zum Ermitteln einer Undichtigkeit eines Kraftstoffinjektors

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Publication number Publication date
DE102010027989A1 (de) 2011-10-20
WO2011131467A3 (fr) 2012-01-12

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