EP1200724B1 - Verfahren zum steuern einer brennkraftmaschine - Google Patents
Verfahren zum steuern einer brennkraftmaschine Download PDFInfo
- Publication number
- EP1200724B1 EP1200724B1 EP00951259A EP00951259A EP1200724B1 EP 1200724 B1 EP1200724 B1 EP 1200724B1 EP 00951259 A EP00951259 A EP 00951259A EP 00951259 A EP00951259 A EP 00951259A EP 1200724 B1 EP1200724 B1 EP 1200724B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- combustion engine
- internal combustion
- speed
- changeover
- during
- 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
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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
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
- F02D31/007—Electric control of rotation speed controlling fuel supply
-
- 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
- F02D41/3011—Controlling fuel injection according to or using specific or several modes of combustion
- F02D41/3064—Controlling fuel injection according to or using specific or several modes of combustion with special control during transition between modes
- F02D41/307—Controlling fuel injection according to or using specific or several modes of combustion with special control during transition between modes to avoid torque shocks
-
- 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
- F02D2041/389—Controlling fuel injection of the high pressure type for injecting directly into the cylinder
-
- 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
- F02D41/3011—Controlling fuel injection according to or using specific or several modes of combustion
- F02D41/3017—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used
- F02D41/3023—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used a mode being the stratified charge spark-ignited mode
- F02D41/3029—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used a mode being the stratified charge spark-ignited mode further comprising a homogeneous charge spark-ignited mode
Definitions
- the invention relates to a method for operating a Internal combustion engine, in particular of a motor vehicle, at the fuel in at least one first operating mode during a suction phase or in a second operating mode directly into a combustion chamber during a compression phase is injected and depending on the Operating mode controlled and / or regulated differently becomes. Furthermore, the invention relates to a device for operating an internal combustion engine, in particular one Motor vehicle, with means in at least a first Operating mode during a suction phase or in a second Operating mode during a compression phase fuel inject directly into a combustion chamber and other means, which depending on the operating mode Control and / or regulate the internal combustion engine differently.
- the first operating mode is a so-called Shift operation and as a second operating mode a so-called Differentiated homogeneous operation.
- the shift operation is used especially for small to medium loads, during the homogeneous operation at larger, at the Internal loads applied to the internal combustion engine.
- the internal combustion engine is with an injector, with the fuel either in a first operating mode during a compression phase or in a second operating mode during an intake phase can be injected directly into a combustion chamber. Furthermore is a control device is provided for switching between the two operating modes and for different control and / or regulation in the two operating modes of the actual moment the operating variables influencing the internal combustion engine depending on a target torque. A change in the actual moment during a switchover process, the Control unit is determined and depending on it at least one of the operating variables from the control unit affected.
- the present invention is based on the object To create methods of the generic type with which the Switching process between the operating modes is improved.
- the particularly great advantage of the present invention lies in that a smooth switchover with simple means between the operating modes over the entire service life an internal combustion engine is reached.
- Figure 1 shows a schematic representation of a Internal combustion engine with a control unit.
- FIG. 2 shows a block diagram of a Embodiment of an inventive Speed control.
- Figure 3 shows an embodiment in more detail a speed control according to the invention.
- the 1 shows an internal combustion engine 1, in which a piston 2 in a cylinder 3 back and forth is movable.
- the cylinder 3 has a combustion chamber 4 provided, on the valves 5, an intake pipe 6 and a Exhaust pipe 7 are connected.
- the Combustion chamber 4 can be controlled with a signal TI Injector 8 and a controllable with a signal ZW Associated with spark plug 9.
- the intake pipe 6 is with an air mass sensor 10 and that Exhaust pipe 7 can be provided with a lambda sensor 11.
- the air mass sensor 10 measures the air mass of the Intake pipe 6 supplied fresh air and generated in Depending on this, a signal LM.
- the lambda sensor 11 measures the oxygen content of the exhaust gas in the exhaust pipe 7 and generates a signal ⁇ depending on this.
- a throttle valve 12 is accommodated in the intake pipe 6, whose rotary position is adjustable by means of a signal DK.
- the throttle valve 12 becomes wide open.
- the fuel is supplied from the injection valve 8 during one caused by the piston 2 Compression phase injected into the combustion chamber 4. Then it will be using the spark plug 9 ignites the fuel so that the piston 2 in the now following work phase by the Expansion of the ignited fuel is driven.
- the homogeneous operation of the Internal combustion engine 1 the throttle valve 12 in Dependence on the desired air mass supplied partially opened or closed.
- the fuel is from the injection valve 8 during a through the piston 2 induced suction phase injected into the combustion chamber 4.
- the air sucked in at the same time injected fuel swirled and thus in the Combustion chamber 4 is distributed substantially uniformly.
- the fuel-air mixture during the compression phase compressed to be ignited by the spark plug 9. Due to the expansion of the ignited fuel Piston 2 driven.
- the driven piston In shift operation as well as in homogeneous operation, the driven pistons a crankshaft 14 in a Rotational movement over which ultimately the wheels of the Motor vehicle are driven.
- the crankshaft 14 is assigned a speed sensor 15 which is a function of the rotational movement of the crankshaft 14 generates a signal N.
- Fuel mass is in particular from a control unit 16 with a view to low fuel consumption and / or controlled low pollutant development and / or regulated.
- the control unit 16 is equipped with a Microprocessor provided in a storage medium, a program in particular in a read-only memory (ROM) stored, which is suitable for the entire Control and / or regulation to perform.
- ROM read-only memory
- the control unit 16 is acted upon by input signals, the operating variables measured by sensors Represent internal combustion engine.
- the operating variables measured by sensors Represent internal combustion engine For example, that is Control unit 16 with the air mass sensor 10, the lambda sensor 11 and the speed sensor 15 connected.
- the a signal FP generates the position one of one Driver actuated accelerator pedal and thus that of the driver indicates requested moment.
- the control unit 16 generates Output signals with which the behavior of the Internal combustion engine 1 according to the desired control and / or regulation can be influenced.
- Block 16 represents schematically the control unit of the internal combustion engine 1.
- the inside of the blocks shown in block 16 are usually in the Control unit implemented as software functions.
- Block 19 is also at its input by one Speed signal N applied.
- the exit of block 19 acts on a comparison body 21.
- the comparison body 21 is also acted upon by the speed signal N.
- the speed difference ⁇ N is made the target speed N_SOLL and the actual speed N are formed.
- the output of the comparator 19 becomes the speed controller 20 fed.
- the output of the speed controller 20 applies a block 22 for torque coordination and implementation.
- Other functions not shown here can also the receipt of the moment coordination and implementation 22 apply.
- the output impacts one Accelerator pedal 17 also the block torque coordination and - implementation 22.
- the output signals of block 22 are as Control variables supplied directly to the internal combustion engine 1.
- the target speed N_SOLL predicts that during the switching process is used as a reference variable for speed control.
- the target speed N_SOLL can, for example, from the Speed curve before the switchover N0 and from the current course of the target torque M of the internal combustion engine 1 are formed.
- Control difference ⁇ N between from the predicted speed N_SOLL and the current speed N formed and the Speed controller 20 supplied.
- the speed controller 20 has the Task, the deviations between the target speed N_SOLL and the actual speed N by forming a corresponding one Output variable or torque requirement for the Minimize internal combustion engine MU.
- the moment request MU will be 22 in moment coordination and implementation further processed.
- the moment coordination and implementation 22 has the task the different moment requests of the individual consumers and coordinate functions to get the required Derive control interventions for the internal combustion engine, wherein the main control variables are preferably the ignition angle ZW Throttle valve position DK and the injection time TI To be available.
- the advantage of this approach is in that the individual power consumers regardless of current operating state of the internal combustion engine 1 their Requests for moments in moment coordination and implementation 22 can express. You do not need to intervene to take care of and don't need any information about the State of other functions. So that's a mutual Influencing the individual functions at the level of Command values excluded.
- FIG. 3 shows the invention in more detail Speed control.
- a block 15 for speed detection simultaneously applies a block 23 for differentiation of the speed signal and a block 24 for linear Extrapolation. With the help of blocks 23 and 24 Prediction of the target speed N_SOLL carried out.
- the Output of the block linear extrapolation 24 acts on the Comparison point 21, which is simultaneously from the speed signal N is applied. In the comparison point 21 Speed difference ⁇ N formed.
- the exit of the Comparison point 21 acts on an amplifier 25 which the speed difference ⁇ N amplified by a factor K.
- the Output of the amplifier 25 becomes a switch at the same time 27 and a block 26 for ramp-off fed.
- Block 27 is also added to block 18 applied.
- the output of block 27 acts on the Moment coordination and implementation 22.
- the speed controller 20 shown in Figure 2 is in this embodiment with the help of the reinforcement block 25, the block ramp down 26 and the block Switch 27 realized.
- the blocks are the blocks 18 linear extrapolation 24 and switch 27 activated.
- the ones from Speed sensor 15 detected speed N is in block 23 differentiated, creating a measure of the change in speed or the gradient of the speed dN at the output of block 23 is applied.
- block 24 with the help of the detected change the speed dN by linear extrapolation from past Values of the speed N a future value of the speed N_SOLL formed.
- the slope of the Extrapolation line through the gradient of the speed dN and the initial value of the extrapolation line for Switching time is with the help of past Speed values formed.
- the torque to be output by the internal combustion engine 1 is constant is. This assumption is permissible here because the Switching processes usually only last a very short time.
- the difference ⁇ N from the estimated speed N_SOLL and the speed sensor 15 currently determined speed N is formed.
- the speed difference ⁇ N is then an amplifier 25 fed, which represents the ordinary speed controller.
- a P controller has been selected here.
- the determined speed difference ⁇ N is in the amplifier 25 strengthened.
- the increased speed difference ⁇ N is in the case a switching process with the help of the switch 17 Moment coordination and implementation 22 as Torque request MU supplied.
- the switch 17 is located during the switching process in the in FIG. 3 shown first position. After the switching process the switch 27 from the first to the second switching position brought, whereby block 26 is activated. With the help of Blocks 26 the ramped speed difference is ramped moved to zero. This prevents after the switching process by a hard shutdown of the Speed control causes a jerk or a jump in speed becomes. Before and after the switching process, the switch 17 brought into the second switching position, whereby reached is that the speed control is not during this time is active.
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- 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)
- Combined Controls Of Internal Combustion Engines (AREA)
Description
Claims (12)
- Verfahren zum Betreiben einer Brennkraftmaschine (1), insbesondere eines Kraftfahrzeugs, bei dem Kraftstoff in wenigstens einer ersten Betriebsart während einer Ansaugphase oder in einer zweiten Betriebsart während einer Kompressionsphase direkt in einen Brennraum (4) eingespritzt wird und die in Abhängigkeit von der Betriebsart unterschiedlich gesteuert und/oder geregelt wird, dadurch gekennzeichnet, daß während eines Umschaltvorgangs zwischen zwei Betriebsarten die Drehzahl N der Brennkraftmaschine (1) geregelt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß während des Umschaltvorgangs eine Soll-Drehzahl N_SOLL aus dem Verlauf einer Ist-Drehzahl vor dem Umschaltvorgang N0 und dem Verlauf eines Soll-Moments M_SOLL ermittelt wird.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß das Soll-Moment M_SOLL als konstant angenommen wird (M_SOLL = konst.).
- Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß die Soll-Drehzahl N_SOLL durch lineare Extrapolation der Ist-Drehzahl vor dem Umschaltvorgang N0 ermittelt wird.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die Steigung einer Extrapolationsgeraden durch einen Drehzahlgradienten dN vor der Umschaltung und der Ausgangswert der Extrapolationsgeraden zum Umschaltzeitpunkt mit Hilfe von vergangenen Drehzahlwerten gebildet wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Drehzahl N der Brennkraftmaschine (1) mit Hilfe eines P-Reglers 20 geregelt wird.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß der Drehzahlregler 20 zu Beginn einer Umschaltung eingeschaltet und nach Beendigung der Umschaltung, sobald stationäre Bedingungen vorliegen, abgeschaltet wird.
- Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß die Stellgröße am Drehzahlreglerausgang nach dem Abschalten des Drehzahlreglers 20 rampenförmig auf Null gefahren wird.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß die Stellgröße bzw. Ausgangsgröße des Drehzahlreglers 20 als Momentenanforderung einer Momentenkoordination und - umschaltung 22 zugeführt wird.
- Verfahren nach Anspruch 9, dadurch gekennzeichnet, daß die Momentenkoordination und -umschaltung 22 in Abhängigkeit von der aktuellen Betriebsart die Momentenanforderung MU in entsprechende Werte der Einflußgrößen (TI,ZW,DK) der Brennkraftmaschine (1) umsetzt.
- computer-Programm, zur Anwendung bei einem Verfahren gemäß einem der Ansprüche 1 bis 10, das während eines Ablaufs auf einem Computer wenigstens einen der Schritte nach den Ansprüchen 1 bis 9 ausführen kann.
- Vorrichtung zum Betreiben einer Brennkraftmaschine (1), insbesondere eines Kraftfahrzeugs, mit Mitteln die in wenigstens einer ersten Betriebsart während einer Ansaugphase oder in einer zweiten Betriebsart während einer Kompressionsphase Kraftsstoff direkt in einen Brennraum (4) einspritzen und weiteren Mitteln die in Abhängigkeit von der Betriebsart die Brennkraftmaschine (1) unterschiedlich steuern und/oder regeln, dadurch gekennzeichnet, daß Mittel während eines Umschaltvorgangs zwischen zwei Betriebsarten die Drehzahl N der Brennkraftmaschine (1) regeln.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19931826A DE19931826B4 (de) | 1999-07-08 | 1999-07-08 | Verfahren zum Steuern einer Brennkraftmaschine |
DE19931826 | 1999-07-08 | ||
PCT/DE2000/002198 WO2001004482A1 (de) | 1999-07-08 | 2000-07-05 | Verfahren zum steuern einer brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1200724A1 EP1200724A1 (de) | 2002-05-02 |
EP1200724B1 true EP1200724B1 (de) | 2004-05-19 |
Family
ID=7914081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00951259A Expired - Lifetime EP1200724B1 (de) | 1999-07-08 | 2000-07-05 | Verfahren zum steuern einer brennkraftmaschine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1200724B1 (de) |
DE (2) | DE19931826B4 (de) |
ES (1) | ES2221621T3 (de) |
WO (1) | WO2001004482A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10038991A1 (de) * | 2000-08-10 | 2002-02-21 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Regelung einer Betriebsgröße einer Brennkraftmaschine |
DE10232327A1 (de) * | 2002-05-17 | 2003-11-27 | Daimler Chrysler Ag | Verfahren zum Betreiben einer Antriebseinheit für ein Kraftfahrzeug |
DE102005046751B4 (de) * | 2005-09-29 | 2009-04-16 | Continental Automotive Gmbh | Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3039435C2 (de) * | 1980-10-18 | 1984-03-22 | Robert Bosch Gmbh, 7000 Stuttgart | Vorrichtung zur Regelung der Leerlauf-Drehzahl von Brennkraftmaschinen |
JPH04370343A (ja) * | 1991-06-19 | 1992-12-22 | Fuji Heavy Ind Ltd | 2サイクルエンジンのアイドル回転数制御装置 |
DE19631986A1 (de) * | 1996-08-08 | 1998-02-12 | Bosch Gmbh Robert | Steuereinrichtung für eine direkteinspritzende Benzinbrennkraftmaschine |
DE19751100A1 (de) * | 1996-11-20 | 1998-06-04 | Hitachi Ltd | Vorrichtung zur Unterdrückung von Drehmomentschwankungen für Verbrennungsmotoren |
DE19719760A1 (de) * | 1997-05-10 | 1998-11-12 | Bosch Gmbh Robert | System zum Betreiben einer direkteinspritzenden Brennkraftmaschine insbesondere eines Kraftfahrzeugs |
JP3541661B2 (ja) * | 1997-12-17 | 2004-07-14 | 日産自動車株式会社 | エンジンのトルク制御装置 |
DE19813377A1 (de) * | 1998-03-26 | 1999-10-07 | Bosch Gmbh Robert | Verfahren zum Betreiben einer Brennkraftmaschine |
JP3654010B2 (ja) * | 1998-10-19 | 2005-06-02 | 日産自動車株式会社 | 内燃機関の制御装置 |
-
1999
- 1999-07-08 DE DE19931826A patent/DE19931826B4/de not_active Expired - Fee Related
-
2000
- 2000-07-05 ES ES00951259T patent/ES2221621T3/es not_active Expired - Lifetime
- 2000-07-05 DE DE50006516T patent/DE50006516D1/de not_active Expired - Lifetime
- 2000-07-05 EP EP00951259A patent/EP1200724B1/de not_active Expired - Lifetime
- 2000-07-05 WO PCT/DE2000/002198 patent/WO2001004482A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
WO2001004482A1 (de) | 2001-01-18 |
DE19931826A1 (de) | 2001-01-18 |
EP1200724A1 (de) | 2002-05-02 |
DE50006516D1 (de) | 2004-06-24 |
ES2221621T3 (es) | 2005-01-01 |
DE19931826B4 (de) | 2004-09-02 |
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