WO2008142066A9 - Vorrichtung und verfahren zum steuern eines antriebsaggregats - Google Patents
Vorrichtung und verfahren zum steuern eines antriebsaggregats Download PDFInfo
- Publication number
- WO2008142066A9 WO2008142066A9 PCT/EP2008/056151 EP2008056151W WO2008142066A9 WO 2008142066 A9 WO2008142066 A9 WO 2008142066A9 EP 2008056151 W EP2008056151 W EP 2008056151W WO 2008142066 A9 WO2008142066 A9 WO 2008142066A9
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- torque
- internal combustion
- combustion engine
- steps
- change
- Prior art date
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
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1433—Introducing closed-loop corrections characterised by the control or regulation method using a model or simulation of the system
-
- 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
- F02D2250/18—Control of the engine output torque
- F02D2250/26—Control of the engine output torque by applying a torque limit
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Definitions
- the invention relates to a method for controlling the operation of an internal combustion engine, in particular an internal combustion engine driving a motor vehicle, wherein a target torque which is to be delivered to the internal combustion engine, is determined in several steps, wherein in a first step, a user requested torque is he ⁇ averages and this is in subsequent steps modified by various functions that reflect the influence of at least one independently determined application and / or operating parameters of the internal combustion engine to which actually saugebe- nes torque, so that at the end of the sequence of steps which in operation the engine detects required torque, and monitors the operation of the internal combustion engine and the determination of the at least one set ⁇ and operating parameter for errors and these errors descriptive or indicating diagnostic values are generated and the diagnostic values a change, in particular limitation, of the desired torque can be used.
- the internal combustion engines are controlled by means of complex monitoring and control methods.
- the driver's request for the torque is taken into account by the Fahrpe ⁇ dal too or its change in speed in the control of the internal combustion engine.
- a desired torque is determined in internal combustion engines, which must provide the internal combustion engine during operation.
- internal combustion engines which serve as a drive source for a vehicle, while a so-called torque management takes place, which has the initially described ⁇ steps.
- the setpoint torque is fixed, it is converted into control variables by means of fixed engine-type dependent implementation in control variables, such as, for example, a injected fueling amount.
- control variables such as, for example, a injected fueling amount.
- diagnostic methods are performed which determine the state of operational and / or operating parameters of the internal combustion engine, such as the life of the engine, the exhaust gas properties, the speed, the coolant temperature, etc. Is based on such a diagnostic process, an operating situation of the internal combustion engine detected, which could be detrimental to the life of the internal combustion engine, for the exhaust behavior, for fuel consumption or other aspects, so due to the diagnostic method, the injection quantity of the fuel of the internal combustion engine is reduced. The same applies if an error occurs.
- a safety-related or even safety-critical situation may arise, if e.g.
- the reduction in the injection quantity of the fuel causes a reduction in speed or torque during a passing process and thus leads to a less pronounced acceleration or even to a deceleration of the vehicle. Since the driver of the vehicle does not expect the reduction of the torque and sets the availability of the acceleration, especially during an overtaking process, a lower acceleration can cause a safety-relevant situation.
- error sources themselves are usually individual combustion engines the state of the art intervenes to take account of diagnosed errors or abnormalities after the desired torque has been determined.
- This setpoint torque is then suitably limited before it is converted into internal combustion engine-specific control parameters. This ensures that malfunctions or other boundary conditions are suitably taken into account.
- a framework condition that has been considered for a long time in this way is the soot behavior of an internal combustion engine, in particular especially in an internal combustion engine with internal Gemischbil ⁇ tion.
- the desired torque after completion of the determination with the above steps is optionally reduced so that the internal combustion engine has a desired exhaust gas behavior, in particular a desired particle or soot ⁇ emission.
- the invention is therefore based on the object, so further develop a procedural ⁇ ren of the type mentioned that in stan-ended diagnosis of the operation of an internal combustion engine, as required, for example in accordance with legal regulations for the "on-board” diagnosis, safety-critical situations by interfering with the setpoint torque, to minimize or at least make it less likely.
- diagnostic values are individually assigned to the respective steps and are used in the execution of the respective step for changing, in particular limiting, the determination or modification of the torque effected in the respective step.
- a possible input and / or operating parameter may be the speed of a vehicle driven by the internal combustion engine, a gear of a transmission located in the output of the internal combustion engine, etc.
- the use of the diagnostic value may have one or more of the following effects in each step: modification of the maximum permitted torque, change in the maximum permitted speed, change in the permitted torque of the torque or speed. It is also possible to set variable limits and to modify filter functions be used, ramp-like thresholds or limits, etc.
- a further example is to limit the available torque or the permitted speed range differently depending on various operational parameters, such as selected gear, vehicle speed, etc.
- the limitation can for example be proportional to the vehicle speed or the limitation can be carried out in from ⁇ dependence of the vehicle speed or be adapted in an error in the vehicle speed. Also achieved is that redundancies be avoided by limitations in various functions.
- FIG. 1 is a block diagram of an internal combustion engine
- FIG. 2 is a block diagram of a torque management system implemented in a control unit of the internal combustion engine of FIG. 1;
- FIG. 3 shows a diagram in which the torque which can be output by the internal combustion engine is plotted as a function of the rotational speed
- FIG. 4 shows a diagram in which the torque which can be output by the internal combustion engine is plotted as a function of time.
- the target torque is determined in a sequence of several steps.
- the internal combustion engine B is connected to a control unit S, which controls the operation of the internal combustion engine and in particular adjusts the torque output by the internal combustion engine B, which can be provided, for example, for operating a motor vehicle, to a previously determined nominal torque.
- determining the solvency Torque takes into account the control unit S above all the position of an accelerator pedal F, via which an operator of the internal combustion engine, for example, a driver of the motor vehicle, which dictates the desired torque in the form of a so-called driver's request.
- the control unit S is further connected via not designated lines with different sensors M, which provide a variety of metrics to the control unit S, for example, the operating temperature of the internal combustion engine B, their current speed, a boost pressure of a turbocharger, or operating parameters of various external units, such as For example, an air conditioner, a drive train driven by the internal combustion engine, etc.
- sensors M which provide a variety of metrics to the control unit S, for example, the operating temperature of the internal combustion engine B, their current speed, a boost pressure of a turbocharger, or operating parameters of various external units, such as For example, an air conditioner, a drive train driven by the internal combustion engine, etc.
- the control unit S carries out a so-called torque management in order to determine the target torque to be output by the internal combustion engine taking into account various influencing factors. These influencing factors are control functions that cover different aspects of the process
- the control unit S first determines the torque requested by the driver of the vehicle equipped with the internal combustion engine B. This requirement is called driver's request.
- the driver's request represents an output variable for the desired torque of the internal combustion engine; It is subsequently modified taking into account various functions, wherein each function may result in a change in the desired torque in the absolute value and / or over time. These functions can be, for example:
- the driver's request is determined, for example, based on the accelerator pedal F. It is detected how far and / or how fast the accelerator pedal F is pressed. On the basis of this information can be determined in the function of the driver request interpretation, whether the driver wants a high speed or acceleration.
- the function for external torque taps includes, for example, the connection of auxiliary units, such as, for example, the connection of an air-conditioning compressor or additional electrical or mechanical consumers or the like. As a result, the torque still available for the drive is reduced and this function causes a corresponding opposite increase in the setpoint torque.
- a control function is applied in different steps of the torque determination and the setpoint torque is modified accordingly. After the steps are so that the setpoint torque is fixed, which is to be delivered by the internal combustion engine, and it is converted into corresponding control parameters, which are then set by the control unit S on the internal combustion engine B. This ensures that the internal combustion engine ⁇ B releases the torque for each operating condition that the driver's request in consideration of the restrictions allow it to react also corresponds to the current operating state.
- FIG. 2 shows a block diagram 20 of FIG
- step 21 a driver's request calculation is performed.
- step 22 for example, a load impact correction is performed.
- step 23 For example, the influence of external torque intervention is calculated, and in step 24, drivability compensations such as bucking are performed.
- steps 21 to 24 modifies the desired torque, which is then available in step 25 and converted into control parameters.
- all blocks 21 to 24 are the subject of possible errors, which symbolizes a block 26.
- the internal combustion engine B is therefore beyond the control unit S beyond a diagnosis in which continuously determined by means of determined sizes of the state of the internal combustion engine B and the functions influencing them. For example, the exhaust gas behavior is monitored and closed to a state that can be unfavorable with regard to the exhaust gas limit values to be maintained. Different diagnostic values are determined.
- the diagnosis value can only be a qualitative indication as to whether an error exists or also include a quantification of the error effect.
- the determination of the respective diagnostic values is summarized schematically in a block 27 and known in principle in the prior art for internal combustion engines.
- a diagnostic value is preferably assigned to each step, which relates to an error which is related to the respective function or influences the effect on the desired torque.
- the diagnostic values assigned to the individual steps are taken into account step by step.
- a fault diagnosis performed on a function is used in the corresponding step in the determination of the target torque. It can thereby be achieved that, on the one hand, the diagnostic values are evaluated and taken into account individually in the determination of the setpoint torque. Possible limitations or effects on the setpoint torque thus intervene where the corresponding effect of the function on the setpoint torque is calculated.
- the consequences of the diagnosis value-related intervention are automatically compensated in a previous step.
- the internal combustion engine B or the vehicle equipped with it is thus kept optimally available. Also effects of the diagnostic value can be much more diverse, if they are introduced individually, as indicated in the block diagram of FIG. This is especially true for a quantitative statement of the diagnostic value, since the function affected by the respective error in the execution of their step in the calculation of the target torque can be considered more accurately than if a diagnosis only for an intervention on the already finally calculated target torque ie before step 25.
- a diagnostic error occurs in the function of ascertaining the driver's request (step 21 or 22)
- a used driver's desired strategy is modified by the control unit S such that the influence of the occurred error on the driver's desired strategy is assessed and weighted. From the result of this division from assessed depends whether and, if appropriate, carried out as a limitation to be carried out the change of the target torque in the ⁇ sem step.
- the limitation can be made by limiting the change in the setpoint torque and / or limiting the setpoint torque itself. Possible are e.g. a possibly changed filtering, the setting of max. Increases / decreases in the torque and / or by setting of variable setpoint values or limit values of the torque take place.
- the consequences of the limitation or of the limits can be taken into account, such as, for example, thelimitation of an injection quantity of the fuel and / or a variable injection pattern in the event of a fault. If, for example, during an overtaking process it is recognized that the limitation has disadvantages, it may be decided to cancel or postpone the limitation. As a result, intervention of the error responses to the various functionalities or strategies is performed depending on the diagnostic error.
- FIG. 3 shows by way of example a diagram of how a diagnostic value from block 26 can be taken into account in step 22.
- the torque TQ of the internal combustion engine B is shown as a function of the rotational speed N.
- a curve 1 shows the course of the maximum torque of the internal combustion engine B, which is available.
- both the torque TQ and the rotational speed N are limited by corresponding thresholds 2, 4, 6 for the torque TQ or 3, 5, 7 for the rotational speed N, so that the torque range and the rotational speed range are limited.
- These limitations are in this example dependent on the vehicle speed (not shown). The higher the Anlagenge ⁇ speed, the milder is the limitation or limitation.
- the torque threshold 2 engages in combination with the speed threshold 3, so that the AVAILABLE torque TQ and the ma ⁇ ximum speed N is limited within the threshold of this area, and higher values are not AUTHORIZED sen.
- the torque threshold 4 is used in combination with the speed threshold 5.
- ⁇ gen torques to the torque threshold 6 and speeds are allowed up to the speed threshold. 7
- a pure torque or speed threshold is possible.
- Figure 4 shows another example of a sch ⁇ ttmdividu- individual consideration of a diagnostic value, namely in the load-blown vaporization in step 23.
- the torque TQ of the internal combustion engine as a function of
- This curve shows the unlimited permitted or possible chronological progression of the torque TQ of the internal combustion engine B, that is to say a maximum paint increase, which the setpoint torque can / may export.
- the curve 10 decays into a rising branch and a constant branch, on which a further increase in the torque TQ over time is not possible, ie a saturation value is reached.
- other increase characteristics for the torque TQ are now permitted, which are entered in dot-dashed curves 11 and 12, respectively.
- These curves correspond to a different temporal filter in a Lasttschkorrek- tur. So they cause a different effect of the function in step 23 on the desired torque or the time course.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200880016939XA CN101680390B (zh) | 2007-05-21 | 2008-05-20 | 用于控制驱动装置的装置和方法 |
US12/600,905 US8200387B2 (en) | 2007-05-21 | 2008-05-20 | Device and method for controlling a drive unit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007023553A DE102007023553B3 (de) | 2007-05-21 | 2007-05-21 | Vorrichtung und Verfahren zum Steuern eines Antriebsaggregats |
DE102007023553.6 | 2007-05-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2008142066A1 WO2008142066A1 (de) | 2008-11-27 |
WO2008142066A9 true WO2008142066A9 (de) | 2009-01-22 |
Family
ID=39855093
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/056151 WO2008142066A1 (de) | 2007-05-21 | 2008-05-20 | Vorrichtung und verfahren zum steuern eines antriebsaggregats |
Country Status (4)
Country | Link |
---|---|
US (1) | US8200387B2 (de) |
CN (1) | CN101680390B (de) |
DE (1) | DE102007023553B3 (de) |
WO (1) | WO2008142066A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009158359A2 (en) * | 2008-06-23 | 2009-12-30 | Sntech, Inc. | Data transfer between motors |
DE112011105672T5 (de) * | 2011-09-28 | 2014-07-17 | Hewlett-Packard Development Company, L.P. | Verwaltung der Datennutzung einer Recheneinrichtung |
US10174700B2 (en) * | 2014-02-04 | 2019-01-08 | Hitachi Automotive Systems, Ltd. | Onboard control device |
US9382011B2 (en) * | 2014-04-10 | 2016-07-05 | Pratt & Whitney Canada Corp. | Multiple aircraft engine control system and method of communicating data therein |
US10449944B2 (en) | 2017-11-01 | 2019-10-22 | Cnh Industrial America Llc | System and method for controlling PTO clutch engagement using adaptive incremental PID control |
DE102018201309A1 (de) * | 2018-01-29 | 2019-08-01 | Volkswagen Aktiengesellschaft | Regelungsverfahren für eine Brennkraftmaschine |
CN112092647B (zh) * | 2020-08-24 | 2021-11-05 | 奇瑞新能源汽车股份有限公司 | 车辆的控制方法与装置、存储介质、控制系统、车辆 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
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CA1331778C (en) * | 1988-07-01 | 1994-08-30 | Hideaki Arai | Abnormal combustion-detecting device and combustion control device for internal combustion engines |
DE4039062C1 (de) * | 1990-12-07 | 1992-06-04 | Vogt Electronic Ag, 8391 Obernzell, De | |
JP2861387B2 (ja) * | 1991-07-18 | 1999-02-24 | 三菱自動車工業株式会社 | 内燃エンジンの空燃比制御装置 |
DE4341584B4 (de) * | 1993-12-07 | 2004-12-23 | Robert Bosch Gmbh | Steuersystem für eine Brennkraftmaschine |
KR0150432B1 (ko) * | 1994-05-10 | 1998-10-01 | 나까무라 유이찌 | 내연엔진의 제어장치 및 제어방법 |
JPH07332119A (ja) * | 1994-06-10 | 1995-12-22 | Nippondenso Co Ltd | 可変気筒装置 |
JP3564863B2 (ja) * | 1996-02-16 | 2004-09-15 | 日産自動車株式会社 | 車両の駆動力制御装置 |
JPH09291835A (ja) * | 1996-04-26 | 1997-11-11 | Honda Motor Co Ltd | 車両用内燃エンジン制御装置 |
DE19739564A1 (de) * | 1997-09-10 | 1999-03-11 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Steuerung einer Antriebseinheit eines Fahrzeugs |
DE19748745A1 (de) * | 1997-11-05 | 1999-05-20 | Bosch Gmbh Robert | Verfahren zum Betreiben einer Brennkraftmaschine insbesondere eines Kraftfahrzeugs |
JP3381613B2 (ja) * | 1998-03-20 | 2003-03-04 | 日産自動車株式会社 | ハイブリッド車両の駆動制御装置 |
DE19851457B4 (de) * | 1998-08-14 | 2011-01-13 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Steuerung des Drehmoments einer Antriebseinheit |
JP3722996B2 (ja) * | 1998-08-25 | 2005-11-30 | 三菱電機株式会社 | エンジンの出力制御装置 |
DE10032110C2 (de) | 2000-07-01 | 2002-10-31 | Mtu Friedrichshafen Gmbh | Diagnosesystem für eine Brennkraftmaschine |
US6948486B2 (en) * | 2002-06-28 | 2005-09-27 | Fleetguard, Inc. | System and method for derating an engine to encourage servicing of a vehicle |
DE102004055313B4 (de) * | 2004-11-16 | 2017-06-22 | Volkswagen Ag | Verfahren und Vorrichtung zur Diagnose oder Verstärkungsadaption von Zylinderdrucksensoren |
US7593796B2 (en) * | 2006-11-27 | 2009-09-22 | Toyota Motor Engineering & Manufacturing North America, Inc. | Torque estimator for internal combustion engine |
-
2007
- 2007-05-21 DE DE102007023553A patent/DE102007023553B3/de not_active Expired - Fee Related
-
2008
- 2008-05-20 WO PCT/EP2008/056151 patent/WO2008142066A1/de active Application Filing
- 2008-05-20 US US12/600,905 patent/US8200387B2/en not_active Expired - Fee Related
- 2008-05-20 CN CN200880016939XA patent/CN101680390B/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN101680390B (zh) | 2012-09-26 |
WO2008142066A1 (de) | 2008-11-27 |
US20100198447A1 (en) | 2010-08-05 |
CN101680390A (zh) | 2010-03-24 |
US8200387B2 (en) | 2012-06-12 |
DE102007023553B3 (de) | 2008-12-04 |
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