EP2247842A1 - Verfahren zum betreiben eines antriebsstrangs eines fahrzeugs und vorrichtung zur durchführung des verfahrens - Google Patents
Verfahren zum betreiben eines antriebsstrangs eines fahrzeugs und vorrichtung zur durchführung des verfahrensInfo
- Publication number
- EP2247842A1 EP2247842A1 EP08870549A EP08870549A EP2247842A1 EP 2247842 A1 EP2247842 A1 EP 2247842A1 EP 08870549 A EP08870549 A EP 08870549A EP 08870549 A EP08870549 A EP 08870549A EP 2247842 A1 EP2247842 A1 EP 2247842A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- torque
- engine
- vehicle
- correction
- internal combustion
- 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
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000002485 combustion reaction Methods 0.000 claims abstract description 22
- 238000000746 purification Methods 0.000 claims abstract description 3
- 238000004590 computer program Methods 0.000 claims description 10
- 238000004364 calculation method Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000008929 regeneration Effects 0.000 description 14
- 238000011069 regeneration method Methods 0.000 description 14
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/12—Introducing corrections for particular operating conditions for deceleration
- F02D41/123—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off
- F02D41/126—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off transitional corrections at the end of the cut-off period
-
- 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
- F02D2250/21—Control of the engine output torque during a transition between engine operation modes or states
Definitions
- the invention is based on a method for operating a drive train of a vehicle with an internal combustion engine and an apparatus for carrying out the method according to the preambles of claims 1 and 8.
- the invention also provides a computer program and a computer program product with a program code which is stored on a machine-readable carrier for carrying out the method.
- Exhaust aftertreatment systems such as diesel particulate filters (DPF) or NOx storage catalytic converters are used to comply with exhaust emission limits.
- the diesel particulate filter collects the particles produced during combustion. At high exhaust gas temperatures, the collected particles are burned and the diesel particulate filter emptied again. However, this only happens at high load without additional intervention.
- measures for increasing the temperature for example a targeted deterioration of the engine efficiency by retarding the injection, post-injections or preheating the intake air temperature can be made in a large operating range, which enable regeneration of the diesel particulate filter.
- this is disadvantageous because of a consequent increased force Substance consumption and a deteriorated comfort behavior of the vehicle. If the load and speed are too low regeneration of the diesel particulate filter is not possible due to the low exhaust gas temperature. This area represents a problem for the operational safety of the diesel particulate filter.
- Pushing operation is understood to mean an operating state of the vehicle in which the kinetic energy emitted by the vehicle through the drive train to the internal combustion engine is decisive.
- the vehicle drives the engine in these states, e.g. in the case of a downhill run with a gear engaged or an automatic gearbox engaged.
- a method for regenerating a diesel particulate filter is disclosed, for example, in DE 10 2005 003 628 A1.
- a torque delivered or picked up by an electric machine of a hybrid vehicle is impressed on the torque requested by an engine control device to produce a signal for the engine by coordinately activating the engine and the electric machine while maintaining the instantaneous power demand Regeneration of the diesel particulate filter to set the optimum operating condition of the internal combustion engine.
- the basic idea of the invention is to impose a correction torque in predefinable operating states of the internal combustion engine and / or of the vehicle in dependence on a desired torque generated by an engine control so that over a predeterminable time interval an output torque is generated whose value is outside of a low-load range.
- a correction torque is generated in such a way that a critical area, in particular a low-load operating area, is traversed very quickly and thus does not interfere.
- the specifiable operating states of the internal combustion engine and / or of the vehicle are characterized by the following conditions:
- the engine speed is less than a predefinable threshold, a predeterminable engine mode is present, in particular a coasting operation is present.
- the presettable operating states of the internal combustion engine and / or the vehicle in a further embodiment of the method are preferably characterized by the following further conditions: There is no external intervention of the vehicle dynamics regulating control device, in particular a traction control system, an electronic control program, an engine slip control or a transmission protection.
- the determination of the correction torque is preferably carried out by calculation in a control unit on the basis of the engine speed and the desired torque.
- a determination of the correction torque can also be carried out with the aid of a characteristic map, which represents the relationship of the correction torque and the engine speed as well as the desired torque.
- the correction torque is set so that the output torque of the powertrain corresponds to a value 0 and above the predetermined torque threshold, the correction torque is selected so that the output torque of the drive train assumes a constant value that is slightly greater than a predeterminable, the low load operating point characteristic torque value.
- This embodiment ensures that undesired operating ranges of the internal combustion engine are traversed very quickly.
- the correction torque is set by changing variables characterizing combustion processes of the internal combustion engine, in particular the injection time and / or the injection duration, in such a way that the desired correction torque is generated.
- the variables characterizing the combustion processes are chosen so that a correction torque is generated, the temporal course of which is gradient-limited.
- the correction torque is only generated if the correction value is smaller than a predefinable threshold. Thus, jumps are avoided at the moment.
- the device according to the invention for carrying out the method has an engine control device prepared for carrying out the method.
- the procedure Ren itself can be realized in this engine control device by a corresponding circuit part.
- the method is preferably implemented as a computer program in a computing device of the control device.
- the computer program itself is advantageously stored on a computer program product which the computing device can read. This is particularly advantageous because this method according to the invention can only be realized by a change in the control functionality, so for example by a pure software change in the engine control unit.
- it can be retrofitted in this way even with existing engine control devices. This allows the above-described new particulate filter, which can be used only up to a maximum temperature, be retrofitted to existing vehicles.
- Fig. 1 shows schematically a flow diagram of a method according to the invention
- Fig. 2 shows schematically the torque over time, as it adjusts when applying the method according to the invention to a drive train of a vehicle.
- step / circuit unit 120 a conversion of the torque into, for example, an injection quantity 130.
- DPF diesel particulate filters
- Pushing operation here means a state of the vehicle in which the engine is driven on the basis of the kinetic energy of the vehicle, for example in the case of a downhill run with an engaged gear or with an engaged automatic transmission gear. In such a driving state, the aforementioned low load operating points may occur.
- the invention now provides for a correction torque to be imparted to a coordinated desired torque, that is to say a desired torque 140.
- the determination of this correction torque is based on the engine speed 301, the engine mode 303 and on the basis of control variables 305, which characterize external interventions.
- a first circuit unit of a circuit device 300 or in a first method step 310 it is checked whether predefinable release conditions are met. The calculation of the correction torque occurs only if the following conditions are met: the engine speed 301 is less than a predefinable threshold,
- the engine mode 303 corresponds to a specification, that is, the vehicle is, for example, in overrun and
- the calculation of the correction torque is based on the engine speed 301 and the coordinated correction torque, i.
- a predefinable threshold namely, for example, 40 Nm in the present case. Only if this is the case in addition to the aforementioned boundary conditions, the calculation of the correction value takes place.
- the correction torque with respect to the time course is gradient-limited and then added additively in an adder or in a step 350 to the setpoint path.
- the output torque 110 generated in this way is converted into an injection quantity 130 in the manner described above. An excessive influence on the driving behavior is thereby also avoided by including this correction before driving comfort filters (not shown) which are also implemented in the control unit 100.
- FIG. 2 schematically shows the torque M over the time t.
- the low load range is indicated by a line representing the transition between overrun and train operation of the vehicle.
- the course 210 shows the driver's desired torque
- a curve 220 represents the output torque after the partial thrust shutdown described above.
- Figure 2 shows schematically the operation of such a partial thrust shutdown.
- a mixing condition for the correction map 320 was selected. That is to say, in a phase designated by I, the desired torque occurring is corrected to 0 and, starting from a phase denoted by II, the desired torque is increased so that the critical torque range is masked out, ie exceeded.
- the critical torque range varies between 0 and 40 Nm for a 4-cylinder 2.2 liter common-rail diesel engine. This corresponds to the internal engine torque of such an engine.
- Phase I for example, a default value of -5 Nm is imposed on a driver specification of 5 Nm, a correction value of -10 Nm on a driver specification of 10 Nm, and so on, so that the output torque is 0 Nm.
- the driver specification 20 Nm, a correction torque of +20 Nm and a driver specification of 30 Nm imposes a correction torque of +10 Nm, resulting in a torque of 40 Nm or slightly greater than 40 Nm.
- the imprinting is as mentioned above gradient limited and then additive.
- the method described above may be implemented as a computer program and as such stored on a computer program product.
- This has the advantage that the program can be "brought in” into existing control systems and retrofitted with corresponding control units, which in turn also makes it possible to retrofit diesel particulate filters in vehicles that were not originally intended for this purpose.
- the invention is, however, not limited thereto.
- the method described above - as mentioned - can also be realized as a control circuit.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Exhaust Gas After Treatment (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008004209A DE102008004209A1 (de) | 2008-01-14 | 2008-01-14 | Verfahren zum Betreiben eines Antriebsstrangs eines Fahrzeugs und Vorrichtung zur Durchführung des Verfahrens |
| PCT/EP2008/065276 WO2009089939A1 (de) | 2008-01-14 | 2008-11-11 | Verfahren zum betreiben eines antriebsstrangs eines fahrzeugs und vorrichtung zur durchführung des verfahrens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2247842A1 true EP2247842A1 (de) | 2010-11-10 |
| EP2247842B1 EP2247842B1 (de) | 2011-08-31 |
Family
ID=40336578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08870549A Not-in-force EP2247842B1 (de) | 2008-01-14 | 2008-11-11 | Verfahren zum betreiben eines antriebsstrangs eines fahrzeugs und vorrichtung zur durchführung des verfahrens |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20110106390A1 (de) |
| EP (1) | EP2247842B1 (de) |
| CN (1) | CN101910593A (de) |
| AT (1) | ATE522716T1 (de) |
| DE (1) | DE102008004209A1 (de) |
| ES (1) | ES2368810T3 (de) |
| WO (1) | WO2009089939A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2192294B1 (de) * | 2008-11-27 | 2013-02-13 | Continental Automotive GmbH | Verfahren für den Betrieb eines Selbstzündungsverbrennungsmotors |
| DE102015209979B4 (de) * | 2015-05-29 | 2026-04-02 | Volkswagen Aktiengesellschaft | Verfahren zum Bestimmen eines Hybridantrieb-Drehmomentschwellwertes, zum Betrieb einer Hybridantriebsvorrichtung und Hybridfahrzeug |
Family Cites Families (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3690305A (en) * | 1968-10-04 | 1972-09-12 | Hitachi Ltd | Fuel supply control system for automobile engines |
| FR2151154A5 (de) * | 1971-09-27 | 1973-04-13 | Brico Eng | |
| JPS52145630A (en) * | 1976-05-31 | 1977-12-03 | Nissan Motor Co Ltd | Fuel feed cylinder number controller |
| JPS54108127A (en) * | 1978-02-13 | 1979-08-24 | Toyota Motor Corp | Electronically-controlled fuel injector |
| US4811223A (en) * | 1985-06-04 | 1989-03-07 | Toyota Jidosha Kabushiki Kaisha | System for controlling engine torque |
| US5211009A (en) * | 1990-12-17 | 1993-05-18 | Kloeckner-Humboldt-Deutz Ag | Method for the regeneration of particulate-filter systems |
| DE19536038B4 (de) * | 1995-09-28 | 2007-08-16 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Steuerung der Antriebseinheit eines Kraftfahrzeugs |
| JP3627419B2 (ja) * | 1997-01-16 | 2005-03-09 | 日産自動車株式会社 | エンジンの空燃比制御装置 |
| JP3591283B2 (ja) * | 1998-01-29 | 2004-11-17 | 日産自動車株式会社 | エンジンの排気浄化装置 |
| US6490857B2 (en) * | 2000-06-29 | 2002-12-10 | Toyota Jidosha Kabushiki Kaisha | Device for purifying the exhaust gas of an internal combustion engine |
| DE10108720A1 (de) * | 2001-02-23 | 2002-09-05 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine |
| JP4092464B2 (ja) * | 2002-06-28 | 2008-05-28 | 日産自動車株式会社 | 排気浄化装置 |
| US6738702B2 (en) * | 2002-08-29 | 2004-05-18 | Ford Global Technologies, Llc | Method for particulate filter regeneration in vehicles having an automatically controlled transmission |
| JP4505176B2 (ja) * | 2002-09-17 | 2010-07-21 | いすゞ自動車株式会社 | 内燃機関の排気ガス浄化システム |
| JP4052178B2 (ja) * | 2003-05-15 | 2008-02-27 | 日産自動車株式会社 | 内燃機関の排気浄化装置 |
| DE10338628A1 (de) * | 2003-08-22 | 2005-03-17 | Daimlerchrysler Ag | Verfahren zum Betreiben einer Brennkraftmaschine mit Abgasreinigungsanlage |
| DE602004004221T2 (de) * | 2003-09-19 | 2007-05-03 | Nissan Motor Co., Ltd., Yokohama | Regenerationssteuerung eines Filters |
| JP2005256804A (ja) * | 2004-03-15 | 2005-09-22 | Denso Corp | 内燃機関の排気浄化装置 |
| DE102004046638A1 (de) * | 2004-09-25 | 2006-03-30 | Robert Bosch Gmbh | Verfahren zum Betreiben einer im Abgasbereich einer Brennkraftmaschine angeordneten Partikelfilters und Vorrichtung zur Durchführung des Verfahrens |
| DE102005003628A1 (de) * | 2005-01-26 | 2006-08-03 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Antriebsstrangs mit einer Elektromaschine und Vorrichtung zur Durchführung des Verfahrens |
| JP4720476B2 (ja) * | 2005-12-14 | 2011-07-13 | 日産自動車株式会社 | 排ガスフィルタ再生制御装置及び排ガスフィルタ再生制御方法 |
| DE102006002640B4 (de) * | 2006-01-19 | 2019-12-19 | Robert Bosch Gmbh | Verfahren zum Betreiben eines in einem Abgasbereich einer Brennkraftmaschine angeordneten Partikelfilters und Vorrichtung zur Durchführung des Verfahrens |
| ATE477405T1 (de) * | 2006-06-28 | 2010-08-15 | Fiat Ricerche | Regeneration eines dieselpartikelfilters |
| DE102007010189A1 (de) * | 2007-03-02 | 2008-09-04 | Robert Bosch Gmbh | Verfahren zur Regelung der Regeneration eines Partikelfilters |
| JP4930215B2 (ja) * | 2007-06-25 | 2012-05-16 | 株式会社デンソー | 排気浄化装置 |
| US8042325B2 (en) * | 2007-11-01 | 2011-10-25 | Ford Global Technologies, Llc | Adapting indicated engine torque during regeneration of a diesel particulate filter |
| US8156730B2 (en) * | 2008-04-29 | 2012-04-17 | Cummins, Inc. | Engine performance management during a diesel particulate filter regeneration event |
| DE102009027519B4 (de) * | 2009-03-18 | 2021-08-12 | Robert Bosch Gmbh | Erkennung einer Leckage im Luftsystem eines Kraftfahrzeugs |
| KR20110062127A (ko) * | 2009-12-02 | 2011-06-10 | 현대자동차주식회사 | 매연필터의 재생 제어방법 |
| US8306710B2 (en) * | 2010-04-14 | 2012-11-06 | International Engine Intellectual Property Company, Llc | Method for diesel particulate filter regeneration in a vehicle equipped with a hybrid engine background of the invention |
| DE102010048216A1 (de) * | 2010-10-12 | 2012-04-12 | Man Truck & Bus Ag | Optimieren bei der Ansteuerung eines automatisierten Getriebes, insbesondere eines automatisierten Getriebes eines Nutzfahrzeuges |
-
2008
- 2008-01-14 DE DE102008004209A patent/DE102008004209A1/de not_active Withdrawn
- 2008-11-11 EP EP08870549A patent/EP2247842B1/de not_active Not-in-force
- 2008-11-11 WO PCT/EP2008/065276 patent/WO2009089939A1/de not_active Ceased
- 2008-11-11 CN CN2008801246834A patent/CN101910593A/zh active Pending
- 2008-11-11 US US12/812,876 patent/US20110106390A1/en not_active Abandoned
- 2008-11-11 AT AT08870549T patent/ATE522716T1/de active
- 2008-11-11 ES ES08870549T patent/ES2368810T3/es active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009089939A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009089939A1 (de) | 2009-07-23 |
| EP2247842B1 (de) | 2011-08-31 |
| CN101910593A (zh) | 2010-12-08 |
| ATE522716T1 (de) | 2011-09-15 |
| ES2368810T3 (es) | 2011-11-22 |
| US20110106390A1 (en) | 2011-05-05 |
| DE102008004209A1 (de) | 2009-07-16 |
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