EP2180168A3 - Method and control device for controlling a fuel injector - Google Patents

Method and control device for controlling a fuel injector Download PDF

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Publication number
EP2180168A3
EP2180168A3 EP09171347.9A EP09171347A EP2180168A3 EP 2180168 A3 EP2180168 A3 EP 2180168A3 EP 09171347 A EP09171347 A EP 09171347A EP 2180168 A3 EP2180168 A3 EP 2180168A3
Authority
EP
European Patent Office
Prior art keywords
actuator
fuel injection
actuator voltage
fuel injector
driving
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.)
Withdrawn
Application number
EP09171347.9A
Other languages
German (de)
French (fr)
Other versions
EP2180168A2 (en
Inventor
Stefan Schempp
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 EP2180168A2 publication Critical patent/EP2180168A2/en
Publication of EP2180168A3 publication Critical patent/EP2180168A3/en
Withdrawn legal-status Critical Current

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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
    • F02D41/20—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
    • F02D2041/2051—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using voltage control
    • 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
    • F02D2041/2065—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit the control being related to the coil temperature
    • 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
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F02D41/221—Safety or indicating devices for abnormal conditions relating to the failure of actuators or electrically driven elements
    • 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
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2409—Addressing techniques specially adapted therefor
    • F02D41/2416—Interpolation techniques

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)

Abstract

Die vorliegende Erfindung schafft ein Verfahren zur Ansteuerung eines einen piezoelektrischen Aktor aufweisenden Kraftstoffinjektors für eine Brennkraftmaschine. Das Verfahren umfasst einen Schritt des Ansteuerns des Aktors mittels eines Ansteuerstromsignals für eine Kraftstoffeinspritzung, wobei eine Ist-Aktorspannung während der Kraftstoffeinspritzung ermittelt wird. Nach einem Vergleich, ob die Ist-Aktorspannung oberhalb eines Aktorspannungsschwellwerts liegt, wird das Ansteuerstromsignal, wenn die Ist-Aktorspannung oberhalb des Aktorspannungsschwellwerts liegt, für eine weitere Kraftstoffeinspritzung derart geregelt, dass die Ist-Aktorspannung während der weiteren Kraftstoffeinspritzung sich einer Soll-Aktorspannung nähert. Unter weiteren Gesichtspunkten schafft die Erfindung ein Computerprogrammprodukt zur Ausführung des Verfahrens und eine Steuervorrichtung zur Ansteuerung eines piezoelektrischen Aktors eines Kraftstoffinjektors für eine Brennkraftmaschine.

Figure imgaf001
The present invention provides a method for driving a fuel injector having a piezoelectric actuator for an internal combustion engine. The method comprises a step of driving the actuator by means of a drive current signal for a fuel injection, wherein an actual actuator voltage is determined during the fuel injection. After comparing whether the actual actuator voltage is above an actuator voltage threshold value, if the actual actuator voltage is above the Aktorspannungsschwellwerts, the Ansteuerstromsignal is controlled for further fuel injection such that the actual actuator voltage during the further fuel injection approaches a target actuator voltage , In other aspects, the invention provides a computer program product for carrying out the method and a control device for driving a piezoelectric actuator of a fuel injector for an internal combustion engine.
Figure imgaf001
EP09171347.9A 2008-10-21 2009-09-25 Method and control device for controlling a fuel injector Withdrawn EP2180168A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008042981A DE102008042981A1 (en) 2008-10-21 2008-10-21 Method and control device for controlling a fuel injector

Publications (2)

Publication Number Publication Date
EP2180168A2 EP2180168A2 (en) 2010-04-28
EP2180168A3 true EP2180168A3 (en) 2014-05-07

Family

ID=41559579

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09171347.9A Withdrawn EP2180168A3 (en) 2008-10-21 2009-09-25 Method and control device for controlling a fuel injector

Country Status (3)

Country Link
US (1) US20100095936A1 (en)
EP (1) EP2180168A3 (en)
DE (1) DE102008042981A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008045955A1 (en) * 2008-09-04 2010-03-11 Continental Automotive Gmbh Method and device for correcting a temperature-induced change in length of an actuator unit, which is arranged in the housing of a fuel injector
DE102010021168B4 (en) * 2010-05-21 2020-06-25 Continental Automotive Gmbh Method for operating an internal combustion engine and internal combustion engine
US10041430B2 (en) * 2013-09-16 2018-08-07 Cummins Inc. System for adjusting a fuel injector actuator drive signal during a fuel injection event
US9455395B2 (en) * 2014-01-10 2016-09-27 Ecomotors, Inc. Piezoelectric actuator control for high rate of operation
DE102014203364B4 (en) * 2014-02-25 2023-03-23 Vitesco Technologies GmbH Method and device for operating a valve, in particular for an accumulator injection system
WO2016087710A1 (en) * 2014-12-04 2016-06-09 Wärtsilä Finland Oy Control method and arrangement for fuel injector and method for upgrading control arrangement
DE102016213522B4 (en) * 2016-07-22 2023-10-12 Vitesco Technologies GmbH Method and device for controlling a piezo actuator of an injection valve of a motor vehicle
FR3112572B1 (en) * 2020-07-20 2022-06-17 Vitesco Technologies Static flow drift of a piezoelectric injector

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19845042A1 (en) * 1998-09-30 2000-04-20 Siemens Ag Method and arrangement for diagnosing a capacitive actuator
EP1138915A1 (en) * 2000-04-01 2001-10-04 Robert Bosch GmbH Method and apparatus for determining charge quantity during charging and discharging of piezoelectric elements
WO2002050413A1 (en) * 2000-12-18 2002-06-27 Siemens Aktiengesellschaft Actuator regulation and corresponding method
EP1505288A2 (en) * 2003-08-08 2005-02-09 Robert Bosch Gmbh Method and device for the functional diagnosis of a piezoactuator in the fuel metering system of a combustion engine
EP2048343A1 (en) * 2007-10-11 2009-04-15 Delphi Technologies, Inc. Detection of faults in an injector arrangement

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10016476A1 (en) * 2000-04-01 2001-12-06 Bosch Gmbh Robert Diagnosing voltage control for piezoelectric actuator for injection valve involves specifying tolerance band taking into account system and injection conditions
EP1139448B1 (en) * 2000-04-01 2009-10-21 Robert Bosch GmbH Method and apparatus for regulating voltages and voltage gradients for driving piezoelectric elements
FR2819022B1 (en) * 2000-12-28 2006-06-02 Denso Corp HYDRAULIC CONTROL DEVICE, SYSTEM AND METHOD FOR CONTROLLING ACTUATOR DEVICE
DE10311141B4 (en) * 2003-03-14 2019-03-28 Robert Bosch Gmbh Method, computer program, storage medium and control and / or regulating device for operating an internal combustion engine, and internal combustion engine, in particular for a motor vehicle
ITBO20030642A1 (en) * 2003-10-31 2005-05-01 Magneti Marelli Powertrain Spa METHOD FOR PILOTING AN INJECTOR WITH VERIFICATION
DE102004062385B4 (en) * 2004-12-23 2006-10-12 Siemens Ag Method and device for driving a capacitive load
EP1843027B1 (en) * 2006-04-03 2018-12-19 Delphi International Operations Luxembourg S.à r.l. Drive circuit for an injector arrangement and diagnostic method
DE602007000093D1 (en) * 2006-05-23 2008-10-09 Delphi Tech Inc Improvements related to the control of fuel injectors
GB0610226D0 (en) * 2006-05-23 2006-07-05 Delphi Tech Inc Drive circuit for an injector arrangement and a diagnostic method
JP4251201B2 (en) * 2006-07-20 2009-04-08 トヨタ自動車株式会社 Injector drive device
JP4853201B2 (en) * 2006-09-27 2012-01-11 株式会社デンソー INJECTOR DRIVE DEVICE AND INJECTOR DRIVE SYSTEM
EP1927743A1 (en) * 2006-11-30 2008-06-04 Delphi Technologies, Inc. Detection of faults in an injector arrangement
EP2400134A1 (en) * 2007-06-22 2011-12-28 Delphi Technologies Holding S.a.r.l. Detection of faults in an injector arrangement
EP2037109B1 (en) * 2007-09-14 2010-06-16 Delphi Technologies Holding S.à.r.l. Injection control system
DE102008001571A1 (en) * 2008-05-06 2009-11-12 Robert Bosch Gmbh Method and device for monitoring a piezoactuator
DE102008001971A1 (en) * 2008-05-26 2009-12-03 Robert Bosch Gmbh Method for diagnosing a load drop

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19845042A1 (en) * 1998-09-30 2000-04-20 Siemens Ag Method and arrangement for diagnosing a capacitive actuator
EP1138915A1 (en) * 2000-04-01 2001-10-04 Robert Bosch GmbH Method and apparatus for determining charge quantity during charging and discharging of piezoelectric elements
WO2002050413A1 (en) * 2000-12-18 2002-06-27 Siemens Aktiengesellschaft Actuator regulation and corresponding method
EP1505288A2 (en) * 2003-08-08 2005-02-09 Robert Bosch Gmbh Method and device for the functional diagnosis of a piezoactuator in the fuel metering system of a combustion engine
EP2048343A1 (en) * 2007-10-11 2009-04-15 Delphi Technologies, Inc. Detection of faults in an injector arrangement

Also Published As

Publication number Publication date
DE102008042981A1 (en) 2010-04-22
EP2180168A2 (en) 2010-04-28
US20100095936A1 (en) 2010-04-22

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