EP1716330A1 - Verfahren zur gleichstellung der einspritzmengenunterschiede zwischen den zylindern einer brennkraftmaschine - Google Patents
Verfahren zur gleichstellung der einspritzmengenunterschiede zwischen den zylindern einer brennkraftmaschineInfo
- Publication number
- EP1716330A1 EP1716330A1 EP05701629A EP05701629A EP1716330A1 EP 1716330 A1 EP1716330 A1 EP 1716330A1 EP 05701629 A EP05701629 A EP 05701629A EP 05701629 A EP05701629 A EP 05701629A EP 1716330 A1 EP1716330 A1 EP 1716330A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- injection
- combustion engine
- internal combustion
- adaptation
- operating point
- 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
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
- F02D41/24—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
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
- F02D41/2464—Characteristics of actuators
- F02D41/2467—Characteristics of actuators for 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
- F02D41/008—Controlling each cylinder individually
- F02D41/0085—Balancing of cylinder outputs, e.g. speed, torque or air-fuel ratio
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/12—Timing of calculation, i.e. specific timing aspects when calculation or updating of engine parameter is performed
-
- 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
- F02D41/24—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
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2438—Active learning methods
-
- 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
- F02D41/3827—Common rail control systems for diesel engines
-
- 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
- F02D41/402—Multiple injections
- F02D41/403—Multiple injections with pilot injections
-
- 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
- F02D41/402—Multiple injections
- F02D41/405—Multiple injections with post injections
Definitions
- the invention relates to a method for equating the injection quantity differences between the cylinders of an internal combustion engine according to the preamble of claim 1.
- a systematic error occurs when fuel is injected into the combustion chambers due to scattering, in particular, of the mechanical properties of the injection device, for example the injectors for diesel engines with common rail.
- Due to the manufacturing tolerances of the components mentioned (different idle strokes) different amounts of fuel are supplied to the combustion in the individual cylinders with the same activation duration and the same actuator energy.
- the different amounts of fuel lead to a different output of the individual cylinders, which in addition to increasing the uneven running also leads to an increase in the amount of harmful exhaust gas components.
- differences in the idle stroke can cause changes in the opening behavior of the injectors. This manifests itself in the fact that the hydraulic start of injection between the individual injectors and the course of the injection are different.
- the invention is based on the object of specifying a method of the type mentioned at the outset which makes it possible to determine the actual, injection-parameter-dependent systematic error with regard to the injection quantities, the hydraulic injection start and the injection process in a simple manner with regard to cylinder equalization.
- This object is achieved by the features of claim 1.
- the dependent claims relate to advantageous developments and refinements of the invention.
- the method for equalizing the injection quantity differences between the cylinders of an internal combustion engine is adapted for at least one selected injection parameter.
- the internal combustion engine is in a selected operating point. It must be ensured that the dynamics of the selected operating point are limited during the adaptation, since a changed injection parameter value would otherwise result in braking or acceleration not injected by the driver of the vehicle, or at any rate in a new operating point, i.e. unsteady conditions during the Adaptation, would express.
- the injection quantity differences for the selected operating point are then determined and learned as adaptation values which are assigned to the respective injection parameter value. As already mentioned above, care must be taken that the selected operating point remains essentially stationary.
- the second or further injection parameters are controlled here as auxiliary variables in such a way that the driver does not notice anything about the adaptation process.
- the learned adaptation values are preferably used to calculate cylinder-specific correction factors with which a control parameter of an injection device of the internal combustion engine is acted upon, for example in the context of an uneven running control, during the adaptation process and during driving operation, in such a way that the injection quantities, the hydraulic injection start and the injection process are compared ,
- the injection device for each cylinder is formed by an injector with a piezoelectric actuator, the activation duration, the activation time and / or the charging duration being used as activation parameters as activation parameters. It is therefore possible to adapt the valve lift necessary for equalization, in particular for different values of the injection pressure.
- the method according to the invention also opens up the possibility of the absolute value of the associated injection quantity being determined from a stored torque model of the internal combustion engine at the stationary operating point set for adaptation with the same injection quantities.
- a diagnosis of the absolute value of the injection quantity is crucial for the compliance with the limiting exhaust gas emission, especially for the diagnosis of small injection quantities that are in the range of a few milligrams.
- an initialization phase 2 is provided in which the adaptation data values stored in an earlier control cycle are loaded into an engine control unit (ECU) (not shown).
- ECU engine control unit
- the initialization of a new control cycle can take place after each starting process of the internal combustion engine, as well as after certain, predetermined time or maintenance intervals.
- the activation conditions are checked in a passive control step 3. It is a matter of waiting until preferred operating conditions for the adaptation to certain injection parameter values have been reached. These include, for example, the load, the speed or the cooling water temperature. The must Motor control may be converted so that the dynamics of the temporal changes in the operating point selected for carrying out the adaptation cycle are limited in the subsequent adaptation.
- the actual active control cycle 4 is started.
- the injection parameters 5 associated with the engine operating state are used to regulate the control duration and charging duration.
- the injection quantities of the individual injectors of the internal combustion engine are matched to one another at a specific operating point and the actuator signals of the different injectors take place at the same time. Detailed information on this follows in the description of the figures for FIG. 2.
- an injection quantity known from the torque model is inferred, which according to the torque achieved ment must be given.
- step 7 adaptive of the control parameters
- further injection parameters or injection parameter sets i are loaded, and in each case the control 6 is carried out with a determination of the injection quantity differences present at the set value of the selected injection parameter or with the equation by means of a corresponding correction factor for a control parameter.
- a suitable control parameter is selected for the adaptation, such as, for example, control duration and charging duration applied to the actuator.
- the resulting adaptation values are based on the injection parameter set, i.e. primarily the injection parameter, such as injection pressure and injection duration, whose influence on the injection quantity should be recorded, assigned and saved so that they can be called up later when driving for direct injection quantity comparison without control cycle.
- a sufficient number of support points typically 5 to 10
- FIG. 2 shows the adaptation of the actuator signals carried out in step 6 by changing the activation duration and charging duration.
- FIGS. 2A to C show two control signals of two injectors in the upper area. The control signals have been mapped one above the other for better presentation. The valve strokes of the corresponding injectors are shown in the lower area.
- the injectors are activated with identical activation signals.
- the first injector receives the driving signal 10, the second injector, the drive signal 11.
- Each drive signal is composed of an upwardly directed Aufladesignal (triangular) 10 "*, 11" * and a downward discharge signal 10, or 11 ⁇ ⁇ (triangular) that starts at ti and ends at t 2 .
- the charging times of 10 ⁇ and 11 and the discharging times of 10 ⁇ and 11 ⁇ are identical.
- the period between the end of the charge and the start of the discharge is unchanged for all FIGS. 2A to 2C (range between t 2 and t 3 ).
- the same control signals 10 and 11 cause different valve strokes in the injectors as in signals 13 and 14.
- the valve lift 13 corresponds to the first injector and the valve lift 14 corresponds to the second injector.
- the actuator of the first injector When the maximum needle stroke (needle stop of the nozzle needle) is reached, the actuator of the first injector generates an actuator signal S1 at the time of approximately 1.3 time units.
- the actuator of the second injector generates an actuator signal S2 at approximately 1.4 time units.
- the valve of the second injector is raised less than that of the first injector, despite the same control signals.
- the valve of the second injector is only raised at time t 2 , with the first injector taking place much earlier (t ⁇ ⁇ ). This delay is caused by the larger idle stroke of the second injector.
- the control signal of the second injector 11 is now changed somewhat by increasing the charging time and the control duration. This is achieved by the end of the charging time remaining unchanged at t 2 .
- the activation period is made up of the charging period u (charging period and discharging period) and the period between the two signals.
- the early start of the charging process leads to an earlier overcoming of the empty stroke and thus to a faster activation of the valve.
- the longer charging process increases the maximum valve lift (from 16 to 16 '), ie from 40 ⁇ m to over 50 ⁇ m, as shown in FIGS. 2A and 2B.
- the actuator signal S2 shifts at an earlier point in time, so that the actuator signals S1 and S2 are now closer to one another than in FIG. 2A.
- This simultaneity means that the actuator signal of the first injector takes place at a certain crankshaft angle of the piston in relation to the top dead angle of the piston and accordingly the actuator signal of the second injector takes place at the same crankshaft angle based on its top dead center of the piston.
- each control cycle 6 the most recently stored adaptation values or correction factors are replaced by the newly determined is * . overwritten, whereby in particular the aging phenomena of the injection device that have occurred in the meantime and that possibly lead to changed scattering with regard to the injection quantities into the different combustion chambers are taken into account.
- 5> Based on the set operating and knowledge of the engine operating state (temperature of the cooling water, active consumers), it is optionally possible to read out the absolute value of the injection quantity from the torque model and to use injection quantities 0 for the exact calibration of the map.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004006294A DE102004006294B3 (de) | 2004-02-09 | 2004-02-09 | Verfahren zur Gleichstellung der Einspritzmengenunterschiede zwischen den Zylindern einer Brennkraftmaschine |
| PCT/EP2005/050407 WO2005075806A1 (de) | 2004-02-09 | 2005-02-01 | Verfahren zur gleichstellung der einspritzmengenunterschiede zwischen den zylindern einer brennkraftmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1716330A1 true EP1716330A1 (de) | 2006-11-02 |
| EP1716330B1 EP1716330B1 (de) | 2010-07-21 |
Family
ID=34832568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05701629A Revoked EP1716330B1 (de) | 2004-02-09 | 2005-02-01 | Verfahren zur gleichstellung der einspritzmengenunterschiede zwischen den zylindern einer brennkraftmaschine |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7319930B2 (de) |
| EP (1) | EP1716330B1 (de) |
| DE (2) | DE102004006294B3 (de) |
| WO (1) | WO2005075806A1 (de) |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL159720A0 (en) * | 2004-01-06 | 2004-06-20 | Robert Harold Steinberg | Smart handle and hinge system |
| DE102005001887B3 (de) * | 2005-01-14 | 2006-07-06 | Siemens Ag | Verfahren zur Vergrößerung des Regelbereichs für die Gleichstellung von Einspritzmengenunterschieden |
| DE102005030870A1 (de) * | 2005-07-01 | 2007-01-11 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine |
| DE102006002738A1 (de) * | 2006-01-20 | 2007-08-02 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine |
| DE102006033869B3 (de) * | 2006-07-21 | 2008-01-31 | Siemens Ag | Verfahren und Vorrichtung zur Diagnose der zylinderselektiven Ungleichverteilung eines Kraftstoff-Luftgemisches, das den Zylindern eines Verbrennungsmotors zugeführt wird |
| DE102006036568A1 (de) * | 2006-08-04 | 2008-02-07 | Siemens Ag | Verfahren zur Detektion von Ventilöffnungszeitpunkten von Kraftstoffeinspritzsystemen einer Brennkraftmaschine |
| DE102006039378B4 (de) * | 2006-08-22 | 2012-01-05 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum Betreiben einer Otto-Brennkraftmaschine |
| DE102007019099B4 (de) | 2007-04-23 | 2016-12-15 | Continental Automotive Gmbh | Verfahren und Vorrichtung zur Kalibrierung von Kraftstoffinjektoren |
| DE102007020964A1 (de) | 2007-05-04 | 2008-11-06 | Robert Bosch Gmbh | Verfahren zur Zylindergleichstellung einer Brennkraftmaschine |
| DE102007024823B4 (de) * | 2007-05-29 | 2014-10-23 | Continental Automotive Gmbh | Verfahren und Vorrichtung zur Bestimmung eines Ansteuerparameters für einen Kraftstoffinjektor einer Brennkraftmaschine |
| JP4424380B2 (ja) * | 2007-06-20 | 2010-03-03 | 株式会社デンソー | 噴射量制御装置およびそれを用いた燃料噴射システム |
| DE102007042994A1 (de) * | 2007-09-10 | 2009-03-12 | Robert Bosch Gmbh | Verfahren zum Beurteilen einer Funktionsweise eines Einspritzventils bei Anlegen einer Ansteuerspannung und entsprechende Auswertevorrichtung |
| DE102008027516B3 (de) * | 2008-06-10 | 2010-04-01 | Continental Automotive Gmbh | Verfahren zur Einspritzmengenabweichungsdetektion und zur Korrektur einer Einspritzmenge sowie Einspritzsystem |
| US8701628B2 (en) | 2008-07-11 | 2014-04-22 | Tula Technology, Inc. | Internal combustion engine control for improved fuel efficiency |
| US9664130B2 (en) | 2008-07-11 | 2017-05-30 | Tula Technology, Inc. | Using cylinder firing history for combustion control in a skip fire engine |
| US8402942B2 (en) * | 2008-07-11 | 2013-03-26 | Tula Technology, Inc. | System and methods for improving efficiency in internal combustion engines |
| US8616181B2 (en) * | 2008-07-11 | 2013-12-31 | Tula Technology, Inc. | Internal combustion engine control for improved fuel efficiency |
| US8336521B2 (en) * | 2008-07-11 | 2012-12-25 | Tula Technology, Inc. | Internal combustion engine control for improved fuel efficiency |
| US8646435B2 (en) * | 2008-07-11 | 2014-02-11 | Tula Technology, Inc. | System and methods for stoichiometric compression ignition engine control |
| US9020735B2 (en) | 2008-07-11 | 2015-04-28 | Tula Technology, Inc. | Skip fire internal combustion engine control |
| US8131447B2 (en) * | 2008-07-11 | 2012-03-06 | Tula Technology, Inc. | Internal combustion engine control for improved fuel efficiency |
| DE102008040626A1 (de) * | 2008-07-23 | 2010-03-11 | Robert Bosch Gmbh | Verfahren zur Bestimmung der eingespritzten Kraftstoffmasse einer Einzeleinspritzung und Vorrichtung zur Durchführung des Verfahrens |
| US8511281B2 (en) | 2009-07-10 | 2013-08-20 | Tula Technology, Inc. | Skip fire engine control |
| WO2012075290A1 (en) | 2010-12-01 | 2012-06-07 | Tula Technology, Inc. | Skip fire internal combustion engine control |
| US9010303B2 (en) * | 2011-01-28 | 2015-04-21 | Cummins Intellectual Property, Inc. | System and method of detecting hydraulic start-of-injection |
| DE112012001137B4 (de) | 2011-03-09 | 2022-07-14 | Cummins Intellectual Property, Inc. | Pleuel mit versetzten Aufsatzlöchern für eine Verbrennungskraftmaschine |
| DE102013213405A1 (de) * | 2013-07-09 | 2015-01-15 | Robert Bosch Gmbh | Verfahren zur Trennung von Mengenfehlern einer wenigstens einem Zylinder eines Verbrennungsmotors zugeführten Kraftstoffmenge und Luftmenge |
| US10072559B2 (en) * | 2016-09-23 | 2018-09-11 | Pratt & Whitney Canada Corp. | Method of operating an engine having a pilot subchamber at partial load conditions |
| US11236697B2 (en) * | 2018-02-26 | 2022-02-01 | Hitachi Automotive Systems, Ltd. | Fuel injection control device and fuel injection control method |
| CN112585339B (zh) | 2018-08-21 | 2024-03-19 | 卡明斯公司 | 用于确定和调整燃料喷射控制参数的系统和方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS60184945A (ja) * | 1984-03-02 | 1985-09-20 | Toyota Motor Corp | 電子制御デイ−ゼルエンジンの気筒別燃料噴射量制御方法 |
| JPS60184944A (ja) * | 1984-03-02 | 1985-09-20 | Toyota Motor Corp | 電子制御デイ−ゼルエンジンの気筒別燃料噴射量制御方法 |
| JPS60184948A (ja) | 1984-03-02 | 1985-09-20 | Toyota Motor Corp | 電子制御デイ−ゼルエンジンの気筒別燃料噴射量学習制御方法 |
| US5385129A (en) | 1991-07-04 | 1995-01-31 | Robert Bosch Gmbh | System and method for equalizing fuel-injection quantities among cylinders of an internal combustion engine |
| DE4122139C2 (de) * | 1991-07-04 | 2000-07-06 | Bosch Gmbh Robert | Verfahren zur Zylindergleichstellung bezüglich der Kraftstoff-Einspritzmengen bei einer Brennkraftmaschine |
| JP2969540B2 (ja) * | 1993-07-26 | 1999-11-02 | 株式会社ユニシアジェックス | 内燃機関の空燃比制御装置 |
| DE19720009C2 (de) * | 1997-05-13 | 2000-08-31 | Siemens Ag | Verfahren zur Zylindergleichstellung bezüglich der Kraftstoff-Einspritzmenge bei einer Brennkraftmaschine |
| DE19855939A1 (de) * | 1997-12-18 | 1999-06-24 | Fev Motorentech Gmbh & Co Kg | Verfahren zum Betrieb einer Mehrzylinder-Kolbenbrennkraftmaschine mit Kraftstoffeinspritzung |
| JP2001098985A (ja) * | 1999-09-30 | 2001-04-10 | Mazda Motor Corp | 火花点火式直噴エンジンの燃料制御装置及び燃料制御方法 |
| DE10011690C2 (de) * | 2000-03-10 | 2002-02-07 | Siemens Ag | Verfahren zur Zylindergleichstellung |
| DE10012025A1 (de) * | 2000-03-11 | 2001-10-18 | Bosch Gmbh Robert | Verfahren zum Betreiben einer mehrzylindrigen Brennkraftmaschine |
| JP4089244B2 (ja) * | 2002-03-01 | 2008-05-28 | 株式会社デンソー | 内燃機関用噴射量制御装置 |
| JP3966096B2 (ja) * | 2002-06-20 | 2007-08-29 | 株式会社デンソー | 内燃機関用噴射量制御装置 |
| DE10233778A1 (de) * | 2002-07-25 | 2004-02-05 | Robert Bosch Gmbh | Verfahren zum Verbessern des Rundlaufs einer Brennkraftmaschine |
-
2004
- 2004-02-09 DE DE102004006294A patent/DE102004006294B3/de not_active Expired - Fee Related
-
2005
- 2005-02-01 DE DE502005009951T patent/DE502005009951D1/de not_active Expired - Lifetime
- 2005-02-01 WO PCT/EP2005/050407 patent/WO2005075806A1/de not_active Ceased
- 2005-02-01 EP EP05701629A patent/EP1716330B1/de not_active Revoked
- 2005-02-01 US US10/597,807 patent/US7319930B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005075806A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102004006294B3 (de) | 2005-10-13 |
| DE502005009951D1 (de) | 2010-09-02 |
| EP1716330B1 (de) | 2010-07-21 |
| US7319930B2 (en) | 2008-01-15 |
| WO2005075806A1 (de) | 2005-08-18 |
| US20070162215A1 (en) | 2007-07-12 |
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