EP1530676B9 - Procede pour faire fonctionner un moteur a combustion - Google Patents

Procede pour faire fonctionner un moteur a combustion Download PDF

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Publication number
EP1530676B9
EP1530676B9 EP03792117A EP03792117A EP1530676B9 EP 1530676 B9 EP1530676 B9 EP 1530676B9 EP 03792117 A EP03792117 A EP 03792117A EP 03792117 A EP03792117 A EP 03792117A EP 1530676 B9 EP1530676 B9 EP 1530676B9
Authority
EP
European Patent Office
Prior art keywords
drive signal
valve needle
valve
transition
closed position
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
EP03792117A
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German (de)
English (en)
Other versions
EP1530676A1 (fr
EP1530676B1 (fr
Inventor
Marco Vorbach
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
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Filing date
Publication date
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Publication of EP1530676A1 publication Critical patent/EP1530676A1/fr
Application granted granted Critical
Publication of EP1530676B1 publication Critical patent/EP1530676B1/fr
Publication of EP1530676B9 publication Critical patent/EP1530676B9/fr
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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
    • 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
    • F02D41/3809—Common rail control systems

Definitions

  • the present invention relates to a method for operating an internal combustion engine according to the preamble of patent claim 1.
  • the present invention relates to a control device for an internal combustion engine.
  • the increased risk of contamination is due to the fact that the injection valve is in a state with a comparatively short stroke of the injection needle and thus a smaller opening of the injection valve over a relatively long period of time. In this state, the risk of particles getting trapped between the valve port and the valve needle and clogging the valve port is particularly high.
  • a higher edge steepness of the drive signal leads to a greater speed of the valve needle in the transition from the open to the closed position and vice versa, but upon impact of the valve needle on the valve seat arise due to the high speed of the valve needle so-called Needle beaters that cause the injector to open uncontrollably after reaching the closed position. Furthermore, overshoots of the valve needle can occur.
  • a method for driving a metering device in which the nozzle needle is braked by a suitable driving of the actuator before striking a stop and / or a sealing seat in their speed.
  • the described control requires a complex signal form.
  • the comparatively large slope of the drive signal for the piezoelectric actuator in the transition of the valve needle from the closed position to the intermediate position causes a rapid adjustment of the valve needle from the closed position to the intermediate position, so that the period in which the injection valve has a small needle stroke, is relatively short so that the likelihood of valve clogging by clogging of particles is reduced.
  • the drive signal during the transition of the valve needle from the open position to the closed position symmetrical to the drive signal during the transition of the valve needle from the closed position to the open position.
  • the waveform of the drive signal only for a transition of the valve needle ie either for the transition of the valve needle from the closed position to the open position or vice versa, must be stored.
  • the respective other drive signal can be formed, for example, by subtracting the stored signal values of the drive signal from a maximum signal value for the drive signal or the like. This is possible both with an analog and with a digital control of the piezoelectric actuator.
  • the drive signal at the transition of the valve needle from the open position to the intermediate position a greater edge steepness, as in the transition of the valve needle from the intermediate position to the closed position, which analogous to the opening operation of the injection valve, the same advantages in terms of the duration of the opening time the injection valve with a small needle stroke or the controlled reaching the closed position result through the valve needle.
  • valve needle does not bounce off the valve seat due to the comparatively low slope of the drive signal during the transition of the valve needle from the intermediate position to the closed position, so that no uncontrolled opening of the injection valve after reaching the closed position through the valve needle.
  • drive signal SA is used in an internal combustion engine (not shown) for driving a piezoelectric actuator, which moves a valve needle of an injection valve of the internal combustion engine from a closed position via an intermediate position to an open position and back again.
  • FIG. 1 t denotes the time axis and A denotes a value of the drive signal SA normalized to the maximum value of the drive signal SA.
  • the drive signal SA is an analog signal.
  • FIG. 1 marked several areas SZ, ZO, OZ, ZS of the drive signal SA, which will be described below.
  • the piezoelectric actuator (not shown) is controlled by a likewise not shown control unit of the internal combustion engine with the lying in the area SZ part of the drive signal SA, in which the drive signal SA has a comparatively large slope. This ensures that the valve needle of the injection valve is quickly adjusted from the closed position, which corresponds to a value zero of the drive signal SA, in the intermediate position, so that conditions low Nadelhubs and thus a risk of clogging by trapped particles are avoided.
  • the piezoelectric actuator is driven at the transition from the intermediate position to the opening position, which corresponds to a value one of the drive signal SA, with a drive signal SA comparatively low slope, whereby the range ZO of the drive signal SA is defined.
  • the low edge steepness of the drive signal SA in the region ZO causes the valve needle is not too fast when reaching the open position and moves out of the reached opening position by bouncing uncontrolled or uncontrollably opens by overshoot.
  • the drive signal SA is held at its maximum value of one for a while.
  • the drive signal SA initially passes through the area OZ during the closing operation, wherein the valve needle of the injection valve is moved from the open position to the intermediate position.
  • the slope of the drive signal SA is again relatively large in order to reduce the aforementioned risk of valve contamination.
  • the drive signal SA again has a comparatively low slope in order to avoid too rapid impact of the valve needle on the valve seat of the injection valve and thus bouncing of the valve needle, which leads to uncontrolled Openings of the injection valve leads.
  • FIG. 2 shows a corresponding diagram in which the timing of the digital drive signal SD is specified.
  • the mode of operation is identical to the activation of the piezoelectric actuator with the analog drive signal SA.
  • the time for adjusting the valve needle from the open position to the closed position is determined approximately only by the kinematics of a system consisting of the valve needle and a valve needle mechanically biased spring, it is advantageous to the mechanical parameters of the system valve needle / spring at to consider the selection of the waveform of the drive signal SA and SD, respectively, in order to achieve an optimal division of the valve path with high / small edge steepness.
  • the method described above is implemented as a computer program that is executable on the control unit and stored in its memory.
  • the method according to the invention can be applied to metering systems with components driven by piezoelectric actuators.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Claims (3)

  1. Procédé pour faire fonctionner un moteur à combustion interne, dans lequel une aiguille de soupape d'une soupape d'injection est déplacée au moyen d'un actionneur piézoélectrique sollicité par un signal de commande (SA) d'une position de fermeture dans une position d'ouverture en passant par une position intermédiaire et inversement, le signal de commande (SA), lors de la transition de l'aiguille de soupape de la position de fermeture dans la position intermédiaire présentant une raideur de flanc plus importante que lors de la transition de l'aiguille de soupape de la position intermédiaire dans la position d'ouverture, caractérisé en ce que le signal de commande (SA), lors de la transition de l'aiguille de soupape de la position d'ouverture dans la position de fermeture, par soustraction des valeurs mémorisées du signal de commande (SA), lors de la transition de l'aiguille de soupape de la position de fermeture dans la position d'ouverture, est formé par une valeur de signal maximale pour le signal de commande.
  2. Procédé selon la revendication 1, caractérisé en ce que le signal de commande (SA), lors de la transition de l'aiguille de soupape de la position d'ouverture dans la position intermédiaire, présente une raideur de flanc plus importante que lors de la transition de l'aiguille de soupape de la position intermédiaire dans la position de fermeture.
  3. Appareil de commande pour un moteur à combustion interne, dans lequel une aiguille de soupape d'une soupape d'injection peut être déplacée au moyen d'un actionneur piézoélectrique sollicité par un signal de commande (SA) d'une position de fermeture dans une position d'ouverture en passant par une position intermédiaire et inversement, caractérisé en ce que l'appareil de commande est réalisé pour mettre en oeuvre le procédé selon l'une quelconque des revendications 1 à 2.
EP03792117A 2002-08-16 2003-07-02 Procede pour faire fonctionner un moteur a combustion Expired - Lifetime EP1530676B9 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10237408A DE10237408A1 (de) 2002-08-16 2002-08-16 Verfahren zum Betrieb einer Brennkraftmaschine
DE10237408 2002-08-16
PCT/DE2003/002212 WO2004018859A1 (fr) 2002-08-16 2003-07-02 Procede pour faire fonctionner un moteur a combustion

Publications (3)

Publication Number Publication Date
EP1530676A1 EP1530676A1 (fr) 2005-05-18
EP1530676B1 EP1530676B1 (fr) 2009-04-22
EP1530676B9 true EP1530676B9 (fr) 2009-11-04

Family

ID=30469750

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03792117A Expired - Lifetime EP1530676B9 (fr) 2002-08-16 2003-07-02 Procede pour faire fonctionner un moteur a combustion

Country Status (6)

Country Link
US (1) US7373927B2 (fr)
EP (1) EP1530676B9 (fr)
JP (1) JP2005535832A (fr)
DE (2) DE10237408A1 (fr)
ES (1) ES2322580T3 (fr)
WO (1) WO2004018859A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0616713D0 (en) * 2006-08-23 2006-10-04 Delphi Tech Inc Piezoelectric fuel injectors
CA2600323C (fr) * 2007-09-20 2009-12-29 Westport Power Inc. Clapet avec actionnement direct par effort mecanique, et methode de fonctionnement
US7721716B1 (en) 2008-07-16 2010-05-25 Harwood Michael R High pressure piezoelectric fuel injector
JP2012041897A (ja) * 2010-08-20 2012-03-01 Toyota Motor Corp スターリングエンジンの制御装置
US9284930B2 (en) 2011-06-03 2016-03-15 Michael R. Harwood High pressure piezoelectric fuel injector
JP2013104326A (ja) * 2011-11-11 2013-05-30 Toyota Motor Corp 内燃機関の燃料噴射システム

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3803424A (en) * 1972-05-08 1974-04-09 Physics Int Co Piezoelectric pump system
US4726389A (en) * 1986-12-11 1988-02-23 Aisan Kogyo Kabushiki Kaisha Method of controlling injector valve
US5025766A (en) * 1987-08-24 1991-06-25 Hitachi, Ltd. Fuel injection valve and fuel supply system equipped therewith for internal combustion engines
JP2935499B2 (ja) * 1988-10-27 1999-08-16 株式会社デンソー ディーゼル機関用ピエゾ式噴射弁の駆動装置
US6253736B1 (en) * 1999-08-10 2001-07-03 Cummins Engine Company, Inc. Fuel injector nozzle assembly with feedback control
US6420817B1 (en) * 2000-02-11 2002-07-16 Delphi Technologies, Inc. Method for detecting injection events in a piezoelectric actuated fuel injector
DE60023446T2 (de) * 2000-04-01 2006-05-18 Robert Bosch Gmbh Verfahren und Vorrichtung zur Bestimmung der Ladungsquantität während des Auf- und Entladens von piezoelektrischen Elementen
US6990855B2 (en) * 2000-05-04 2006-01-31 Cummins, Inc. System for estimating a quantity of parasitic leakage from a fuel injection system
DE10035815A1 (de) * 2000-07-22 2002-01-31 Bosch Gmbh Robert Verfahren zur Steuerung eines Einspritzventils
DE10039418A1 (de) * 2000-08-11 2002-02-28 Siemens Ag Verfahren zum Steuren einer Düsennadel einer Dosiervorrichtung
FR2819022B1 (fr) * 2000-12-28 2006-06-02 Denso Corp Dispositif de commande hydraulique, systeme et procede de commande d'un dispositif actionneur
GB0104215D0 (en) * 2001-02-21 2001-04-11 Delphi Tech Inc Control method
DE10113670A1 (de) * 2001-03-21 2002-09-26 Bosch Gmbh Robert Verfahren und Vorrichtung zur Ansteuerung eines Piezoaktors
US6760212B2 (en) * 2002-09-23 2004-07-06 Delphi Technologies, Inc. Piezoelectric injector drive circuit

Also Published As

Publication number Publication date
ES2322580T3 (es) 2009-06-23
US20060118092A1 (en) 2006-06-08
JP2005535832A (ja) 2005-11-24
DE50311455D1 (de) 2009-06-04
WO2004018859A1 (fr) 2004-03-04
DE10237408A1 (de) 2004-02-19
US7373927B2 (en) 2008-05-20
EP1530676A1 (fr) 2005-05-18
EP1530676B1 (fr) 2009-04-22

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