EP1745209A1 - Procede pour commander une soupape d'injection de carburant - Google Patents

Procede pour commander une soupape d'injection de carburant

Info

Publication number
EP1745209A1
EP1745209A1 EP05735183A EP05735183A EP1745209A1 EP 1745209 A1 EP1745209 A1 EP 1745209A1 EP 05735183 A EP05735183 A EP 05735183A EP 05735183 A EP05735183 A EP 05735183A EP 1745209 A1 EP1745209 A1 EP 1745209A1
Authority
EP
European Patent Office
Prior art keywords
valve member
valve
output signal
sensor
actuating
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
EP05735183A
Other languages
German (de)
English (en)
Other versions
EP1745209B1 (fr
Inventor
Harald Thies
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1745209A1 publication Critical patent/EP1745209A1/fr
Application granted granted Critical
Publication of EP1745209B1 publication Critical patent/EP1745209B1/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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/08—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves opening in direction of fuel flow
    • 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
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/24—Fuel-injection apparatus with sensors
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/24—Fuel-injection apparatus with sensors
    • F02M2200/244—Force sensors

Definitions

  • the present invention relates to a method for controlling a fuel injection valve, comprising a piezo actuator as a valve member, which releases or closes a connection to a downstream space, an electrical actuating element for actuating the valve member and a biasing element, which biases the valve member in a biasing direction, and a sensor element , which is arranged on an axis with the valve member and which provides an output signal via the forces acting on the valve member to a control device.
  • the invention is based on the object of providing a method of the type mentioned at the outset which makes it possible to reliably control the fuel injection valve during the entire combustion process.
  • the piezo actuator and the sensor element preferably form a unit.
  • a biasing element for the piezo actuator and the sensor element preferably form a unit.
  • Piezo actuator which moves the valve member in a biasing direction preferably preloaded closing.
  • the sensor element is on one axis with the valve member.
  • the output signal then provides information about the forces acting on the valve member.
  • the force acting on the valve due to the combustion pressure in the combustion chamber is, with appropriate dimensioning, significantly lower than the force exerted by the prestressing element and the force acting on the piezo element due to the electrical excitation.
  • An essential feature of the invention is the course of the electrical energy with which the actuating element is acted upon.
  • the course which is at least approximately inverse to the output signal of the sensor element, is intended to ensure that the piezo actuator remains in an at least approximately unchangeable position during the entire opening time, apart from the opening and closing process.
  • a sensor element is preferably used which, like the piezo actuator, is constructed electrostrictively and is preferably arranged with it on a common axis with the valve member.
  • the effect described above can also be obtained if the sensor element is designed as a magnetostrictive element. This results in a particularly compact structure.
  • a magnetostrictive element can also be used
  • Element can be used. With magnetostrictive elements, the geometrical dimensions of a body change under the influence of one
  • Magnetic field The stretching of the body depends on the magnetic field strength. The greater the magnetic field strength, the greater the stretch of the body. The reversal of this effect is called the magnetoelastic or magnetomechanical effect.
  • This causes a change in the magnetic induction under the influence of a mechanical tension.
  • this can be used for the use of the magnetostrictive element both as an actuator and as a sensor, the forces being transmitted to the magnetostrictive element via the valve member and being determined on the basis of the occurring change in the magnetic induction, corresponding to the piezoelectric element , It is therefore also possible to work with a magnetostrictive element as an actuator and as a sensor.
  • control device in an initial operation phase, acts independently of one another on the actuating elements of a plurality of valve elements each provided with sensor elements with an electrical excitation inverse to the output signal of the respective sensor element.
  • actuating elements of a plurality of valve elements each provided with sensor elements with an electrical excitation inverse to the output signal of the respective sensor element.
  • a further improvement of the method according to the invention is obtained when the control device, in an operating phase following the operating start phase, applies an independent electrical excitation to the actuating elements of a plurality of valve elements and the amplitudes of the excitation corresponding to the output signal of a cylinder-selective lambda Sensor can be selected.
  • the single figure shows a schematic sectional view of a fuel injector with a piezo actuator and an integrated sensor element that is particularly suitable for the method according to the invention
  • the valve 1 comprises a piezoelectric actuator 2 and a separate piezoelectric sensor 3.
  • the actuator 2 and the sensor 3 are arranged directly adjacent to one another and positioned between the housing 1 ′ of the valve 1 and a plate-like element 4.
  • the element 4 is fixedly connected to a valve member 5, which releases or closes a valve seat 6 in order to establish a connection to a combustion chamber 7.
  • the actuator 2 presses on a spring 8 which holds the valve member in the valve seat 6 in the idle state.
  • the spring 8 resets both the piezoelectric actuator 2 and the valve member 5.
  • the mode of operation of the valve 1 shown in the figure is such that the piezoelectric actuator 2 increases its length in the direction of the spring 8 when it is actuated, so that the valve member 5 firmly connected to the piezo actuator 2 lifts off its valve seat 6 and a fuel injection in the combustion chamber 7 can take place.
  • the forces occurring are transmitted to the piezoelectric sensor 3 via the valve member 5.
  • the forces triggered when the piezo actuator 2 is excited and the thermal forces occurring at the piezo actuator are transmitted to the piezoelectric sensor 3.
  • the resultant of all the forces occurring there is forwarded as a signal to a control device (not shown).
  • the same line can be used, which is provided for controlling the piezo actuator 2.
  • the piezo actuator 2 is activated in an initial operation phase in such a way that the control device applies an electrical excitation to the piezo actuator 2, which excitation is at least approximately inverse to the output signal of the sensor 3.
  • the ratio of the two electrical signals is equal to a cylinder-specific gain factor, which is specified via a map. It is thereby achieved that the piezo actuator 2 remains in an at least approximately unchangeable position during the entire opening time, apart from the opening and closing process.
  • the piezo actuators provided for a plurality of cylinders and a plurality of valve members each provided with corresponding sensor elements are acted upon independently of one another with an electrical excitation inverse to the output signal of the respective sensor element in accordance with the method described above for a piezo actuator.
  • Stroke equalization is alternatively to be understood as meaning a stroke of the valves with the same measurement technology or a "same", ie not necessarily physically the same stroke of the injection valves aimed at the same fuel throughput.
  • the actuating elements of a plurality of valve elements are acted upon independently of one another by an electrical excitation inverse to the output signal of the respective sensor element by the control device in an operating phase following the initial operating phase.
  • the amplitudes of the excitation are selected in accordance with the output signal of a cylinder-selective lambda sensor.
  • lambda equalization i. H. an equalization of the fuel-air mixture that results across all cylinders.
  • the fuel throughput m * allocated to the respective cylinders can be measured during operation.
  • the amount of fuel injected into the respective cylinder must be determined using an active lambda sensor.
  • only one fuel injection valve is opened at a time and this operating mode is performed in a rolling manner for the cylinders assigned to the lambda sensor.
  • a cross-comparison of the individual fuel injection valves with one another is also carried out. This check takes place in a "lean overrun phase" of the internal combustion engine. This makes it possible to avoid unacceptable engine running.
  • individual lambda control can then be dispensed with An otherwise usual or necessary adjustment via the running (un) rest / turning (un) uniformity can then be omitted.
  • Another particular advantage of the invention results from the following consideration: A statement about the rigidity of the piezo actuator 2 can be obtained from the signal supplied by the sensor 3. As a rule, an inconsistent course of the signal occurs at the beginning of the injection process. This makes it possible to determine the zero-point energy, that is to say the energy which can be impressed on the piezo actuator 2 so that the valve member 5 does not yet lift out of the valve seat 6. This information is very important for quick control reactions or for determining the energy balance.
  • the discontinuity in the signal curve results from a discontinuity in the stiffness distribution of the piezo actuator 2. It is caused by a combustion chamber or. Changes in fuel pressure in valve member 5 at the start of the injection process and can be recognized by the noise of the sensor signal. The same happens at the end of the injection process when the valve member 5 returns to the valve seat 6.
  • a diagnosis of the injection valve can also be carried out by evaluating the sensor signal.
  • the combustion chamber pressure leads to a force application to the valve member and thus to a sensor signal noise when the valve member 5 is actually at rest.
  • a spring break within the injector can be the cause of the leak.
  • the spring preloads can also be compared with one another by comparing the sensor signal profiles of different fuel injection valves.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

La présente invention concerne un procédé pour commander une soupape d'injection de carburant, comprenant : en tant qu'élément de soupape, un actionneur piézo-électrique qui ouvre et referme une liaison avec un espace situé en aval ; un élément d'actionnement électrique qui sert à actionner l'élément de soupape ; un élément de précontrainte qui applique une précontrainte à l'élément de soupape, dans une direction de précontrainte ; un élément de détection qui est disposé sur un axe avec l'élément de soupape et fournit un signal de sortie à un dispositif de réglage, grâce à des forces qui agissent sur l'élément de soupape. Selon l'invention, le dispositif de réglage applique à l'élément d'actionnement une excitation électrique qui a une allure au moins approximativement inversée par rapport à celle du signal de sortie.
EP05735183A 2004-05-06 2005-04-26 Procede pour commander une soupape d'injection de carburant Active EP1745209B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004022371A DE102004022371A1 (de) 2004-05-06 2004-05-06 Verfahren zum Steuern eines Kraftstoffeinspritzventils
PCT/EP2005/004436 WO2005108771A1 (fr) 2004-05-06 2005-04-26 Procede pour commander une soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1745209A1 true EP1745209A1 (fr) 2007-01-24
EP1745209B1 EP1745209B1 (fr) 2007-09-05

Family

ID=34965488

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05735183A Active EP1745209B1 (fr) 2004-05-06 2005-04-26 Procede pour commander une soupape d'injection de carburant

Country Status (6)

Country Link
US (1) US7372188B2 (fr)
EP (1) EP1745209B1 (fr)
JP (1) JP4789929B2 (fr)
DE (2) DE102004022371A1 (fr)
ES (1) ES2290909T3 (fr)
WO (1) WO2005108771A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2907544B1 (fr) * 2006-10-19 2009-02-13 Renault Sas Systeme d'estimation du debit d'un injecteur de moteur a combustion interne
DE102009055136A1 (de) * 2009-12-22 2011-06-30 Robert Bosch GmbH, 70469 Einspritzsystem
US8733097B2 (en) 2011-03-16 2014-05-27 GM Global Technology Operations LLC Multi-stage actuation for an active materials-based actuator
DE102011007393B3 (de) * 2011-04-14 2012-09-13 Continental Automotive Gmbh Verfahren zur Detektion eines Düsenraumdrucks in einem Injektor und Einspritzsystem
US20130068200A1 (en) * 2011-09-15 2013-03-21 Paul Reynolds Injector Valve with Miniscule Actuator Displacement
DE102012204251B4 (de) * 2012-03-19 2013-12-12 Continental Automotive Gmbh Verfahren zum Betreiben eines Kraftstoffeinspritzsystems und Kraftstoffeinspritzsystem mit Einspritzventilen mit Piezo-Direktantrieb
US20150052905A1 (en) * 2013-08-20 2015-02-26 General Electric Company Pulse Width Modulation for Control of Late Lean Liquid Injection Velocity

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56113044A (en) * 1980-02-13 1981-09-05 Nissan Motor Co Ltd Injection timing sensor
JPS61232381A (ja) * 1985-04-08 1986-10-16 Yanmar Diesel Engine Co Ltd 燃料噴射装置の燃料噴射時期検出装置
JPH0762502B2 (ja) * 1986-06-09 1995-07-05 日本電装株式会社 制御弁
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
JP3809919B2 (ja) * 1995-06-09 2006-08-16 株式会社日立製作所 シリンダ内圧検出装置
DE19827287A1 (de) * 1998-06-19 1999-12-23 Bosch Gmbh Robert Brennstoffeinspritzventil-Drucksensor- Kombination
JP4123499B2 (ja) * 1998-11-30 2008-07-23 株式会社デンソー 圧電式制御弁
DE19903721C1 (de) * 1999-01-30 2000-07-13 Daimler Chrysler Ag Betriebsverfahren für eine Brennkraftmaschine mit Lambdawertregelung und Brennkraftmaschine
DE19960971A1 (de) * 1999-12-17 2001-03-08 Bosch Gmbh Robert Piezoaktor
DE19963134A1 (de) * 1999-12-24 2001-06-28 Delphi Tech Inc Einspritzvorrichtung
DE10032022B4 (de) * 2000-07-01 2009-12-24 Robert Bosch Gmbh Verfahren zur Bestimmung der Ansteuerspannung für ein Einspritzentil mit einem piezoelektrischen Aktor
JP4479113B2 (ja) * 2001-02-23 2010-06-09 株式会社デンソー ピエゾアクチュエータ駆動回路および燃料噴射装置
DE10127932A1 (de) * 2001-06-08 2002-12-19 Bosch Gmbh Robert Ventil zum Steuern von Fluiden sowie Verfahren zur Bestimmung von Drücken
DE10135735B4 (de) * 2001-07-21 2009-04-16 Robert Bosch Gmbh Verfahren zum Betreiben einer Brennkraftmaschine, insbesondere mit Direkteinspritzung, sowie Computerprogramm und Steuer- und/oder Regelgerät
DE10236615A1 (de) * 2002-08-09 2004-02-26 Bayerische Motoren Werke Ag Verfahren zum Erfassen eines den Druck im Brennraum einer mit Direkteinspritzung arbeitenden Brennkraftmaschine darstellenden Signals
US6910449B2 (en) * 2002-12-30 2005-06-28 Ford Global Technologies, Llc Method for auto-ignition operation and computer readable storage device for use with an internal combustion engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005108771A1 *

Also Published As

Publication number Publication date
US7372188B2 (en) 2008-05-13
DE502005001438D1 (de) 2007-10-18
WO2005108771A1 (fr) 2005-11-17
EP1745209B1 (fr) 2007-09-05
DE102004022371A1 (de) 2005-12-01
US20070046146A1 (en) 2007-03-01
JP2007536462A (ja) 2007-12-13
JP4789929B2 (ja) 2011-10-12
ES2290909T3 (es) 2008-02-16

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