WO2013117455A1 - Verfahren zur kalibrierung von abgas-sonden und kraftstoffdosiereinrichtungen in einem hybridfahrzeug - Google Patents
Verfahren zur kalibrierung von abgas-sonden und kraftstoffdosiereinrichtungen in einem hybridfahrzeug Download PDFInfo
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- WO2013117455A1 WO2013117455A1 PCT/EP2013/051621 EP2013051621W WO2013117455A1 WO 2013117455 A1 WO2013117455 A1 WO 2013117455A1 EP 2013051621 W EP2013051621 W EP 2013051621W WO 2013117455 A1 WO2013117455 A1 WO 2013117455A1
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- Prior art keywords
- vehicle
- internal combustion
- electric motor
- combustion engine
- engine
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 239000000523 sample Substances 0.000 title claims abstract description 33
- 238000002485 combustion reaction Methods 0.000 claims abstract description 52
- 239000000446 fuel Substances 0.000 claims abstract description 24
- 238000005259 measurement Methods 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 29
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 238000004590 computer program Methods 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 4
- 239000007858 starting material Substances 0.000 description 9
- 230000006870 function Effects 0.000 description 8
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/48—Parallel type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/46—Series type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
- B60W20/15—Control strategies specially adapted for achieving a particular effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/20—Control strategies involving selection of hybrid configuration, e.g. selection between series or parallel configuration
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- 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
- F02D41/2441—Methods of calibrating or learning characterised by the learning conditions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18072—Coasting
- B60W2030/1809—Without torque flow between driveshaft and engine, e.g. with clutch disengaged or transmission in neutral
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- 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
-
- 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
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
-
- 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
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/146—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration
-
- 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
- F02D41/24—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
- F02D41/2474—Characteristics of sensors
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- 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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Definitions
- the invention relates to a method for calibrating a measurement signal of an exhaust gas probe or an actuating signal of a fuel metering device of a vehicle having a hybrid drive comprising an internal combustion engine and at least one electric motor, in which the vehicle can also be driven solely by an electric motor.
- the subject matter of the present invention is also a computer program and a computer program product which are suitable for carrying out the method.
- Today's motor vehicles usually have one or more exhaust gas sensors arranged in the exhaust gas duct, which output a measurement signal which is proportional to the concentration of at least one exhaust gas component and serves to determine this concentration.
- Very widespread are so-called broadband lambda probes whose measurement signal provides information about the oxygen concentration in the exhaust gas and thus about the internal combustion engine supplied air / fuel ratio.
- so-called NOx sensors which are also able to determine the oxygen concentration in the exhaust gas.
- such probes in the vehicle must be regularly calibrated or calibrated. Such an adjustment usually takes place in overrun mode of the vehicle.
- the overrun operation is characterized in that no fuel is injected, but the vehicle continues to move due to its inertia, thereby dragging the internal combustion engine.
- the towed internal combustion engine in this pushing operation conveys clean air with a known oxygen concentration into the exhaust system. Accordingly, after a certain rinsing time at the installation site of the exhaust gas sensor to be adjusted, there is pure air. After that, for example, using a Lambda probe measured oxygen concentration compared with the known oxygen concentration of the air and calculates an adjustment value, which is corrected in the subsequent operation, the measured value of the lambda probe. Correspondingly, matching functions of other sensors take place in overrun mode.
- DE 199 45 618 A1 discloses a method for calibrating
- Fuel metering devices are known in which the control signal of a fuel metering device is increased in the overrun mode until a measured oxygen concentration falls below the known oxygen concentration of air. In this way, the minimum signal strength is determined, which is necessary for the fuel metering device injects a detectable amount of fuel, and calculates therefrom an adjustment value with which the actuating signal of the fuel metering device is corrected in the subsequent operation.
- Hybrid vehicles are motor vehicles in which at least two drive units are combined with each other.
- known hybrid vehicles for example internal combustion engines and at the same time electrical machines are used.
- a hybrid drive of a vehicle is understood to mean in particular a drive of a vehicle which comprises at least one internal combustion engine and further comprises an electric motor, whereby the vehicle can also be driven by the electric motor alone, ie without active and without passive participation of the internal combustion engine is.
- hybrid drives differ in particular from conventional drives which have an internal combustion engine and only an electric starter or starter.
- the electric starter or starter is set up only for towing the internal combustion engine.
- this penetration takes place only by towing the engine with additional mechanical coupling of the engine with the drive of the vehicle.
- a direct mechanical coupling of the electric starter with the drive of the vehicle, the internal combustion engine does not involve, but does not exist.
- the vehicle by the electric starter or starter so not alone driven, but a mechanical penetration is at most indirectly transmitted by the engine.
- Thrust phase is not known in advance, the thrust is often requested by the coordinator, although the subsequent boost phase does not have the desired duration and can not be used in this respect. This in turn degrades the overall energy efficiency of the hybrid vehicle.
- the inventive method with the features of claim 1 has the advantage that an adjustment of exhaust probes or Kraftstoffdosier boots can be made independently of the overrun operation.
- This operating state is understood by the present application under "engine towing operation.”
- an adjustment or a calibration of the exhaust gas probe or the fuel metering device which assumes that the exhaust system of the internal combustion engine is pure air, regardless of
- the engine towing operation is selected during the purely electric starting of the vehicle.
- the internal combustion engine is operated during startup by the electric motor in engine towing and thereby transported clean air into the exhaust system.
- Another embodiment of the method provides that the engine towing operation is at least partially selected during an existing overrun operation, in which the fuel supply of the internal combustion engine is switched off and the internal combustion engine is kept so far only by the moving due to the inertia vehicle in gear engaged in operation becomes.
- This process variant requires the presence of a push operation. If, however, the overrun phase proves to be too short, the useful period for the trimming function can be extended by the operating mode according to the invention, so that the overrun phase can still be used. For this purpose, a torque requirement during the overrun phase is "covered" by the connected electric motor, that is to say the internal combustion engine is not required for providing the torque in this state.
- the overrun operation can generally be extended even before a torque demand requested by the driver is signaled.
- the thrust functions are performed when the vehicle is operated purely electrically with hybrid drive at low speed, and in particular even if the driver operates neither the gas nor the brake pedal, So the vehicle creeps in a sense electric motor
- the method according to the invention only requires, in further developments, that the calibration also takes place while the vehicle is actually being driven solely by this one electric motor. In other developments, the calibration can also be carried out while the vehicle is not being driven, ie for
- electromotive drag can be done by the electric motor, by which the vehicle is also driven alone, this is only one possible and in the case of parallel hybrids also preferred way. Alternatively, and in the case of serial hybrids, however, it is preferred that the
- Electric motor by which the vehicle is also driven alone, not the at least one electric motor through which the electromotive dragging is done, but another electric motor.
- the generator which is provided in connection with this concept and which is driven by the internal combustion engine in normal operation of the vehicle to generate electricity, eg for charging a battery, during the calibration as Electric motor is operated and the internal combustion engine drags.
- the electric motor by means of which the vehicle can also be driven alone, can be referred to as the first electric motor, and to this extent the at least one electric motor which shuts off the internal combustion engine can be designated as the first electric motor.
- ter fuel supply also referred to as a second electric motor.
- the electric motors referred to in this sense as first and second electric motor can be realized by one and the same electric motor, but need not necessarily.
- the internal combustion engine is only towed until pure fresh air is present at the location of the exhaust gas sensor to be adjusted.
- the actual adjustment of the measurement signal can then be carried out with the internal combustion engine stationary, since further gas exchange at the location of the exhaust gas sensor is not required.
- the drag operation does not have to be continued during the actual balancing, as a result of which the overall energy efficiency continues to increase.
- the pumping current is not maintained in each standstill phase of the internal combustion engine, but is only released in the event of calibration or adaptation of the probe in order to avoid probe damage.
- these different variants of the method are only used when there is actually a need for balancing in air. If such a requirement does not exist, the engine towing operation can be dispensed with in order to save energy.
- Fig. 1 shows a first embodiment of the method according to the invention
- Fig. 2 shows another variant of the method
- Fig. 3 shows a further variant of the method according to the invention.
- Embodiments of the invention The basic idea of the invention is, in addition to the electrical operation of a hybrid vehicle, in which the internal combustion engine is decoupled from the drive train, to allow a further mode in which the internal combustion engine is towed by the electric motor. This will be referred to as engine towing.
- engine towing This will be referred to as engine towing.
- overrun mode which is characterized in that the fuel supply is switched off in this operation, transported by the internal combustion engine clean air, thus creating the possibility of an adjustment described above or a calibration, for example, a lambda probe, perform.
- the method is not only suitable for the thrust balance of lambda probes, but in principle all sensor or balancing functions, in which the presence of air is assumed in the exhaust system, can be provided.
- the method is also applicable to the balancing of the oxygen signal from NOx sensors.
- Fuel metering devices as emerge, for example, from DE 199 45 618 A1, in particular the embodiment with a lambda probe, is another possible application.
- the variants of the method according to the invention described below can be used particularly advantageously if it is to be expected that the internal combustion engine must be started after the engine towing operation. If the internal combustion engine has already been accelerated by the towing operation, correspondingly less energy is required for the starting process.
- a first variant of the method according to the invention is schematically illustrated by a block diagram.
- an operating state 1 10 the vehicle is stationary. Then, in a mode 120, a purely electric starting follows. "Purely electric” here means that the vehicle is driven exclusively with the help of at least one electric motor In a state 130, an engine towing operation takes place, in which the internal combustion engine is towed by the at least one electric motor In this operating state, the
- Alignment of the lambda probe instead. In a further operating state 140 then takes place the start of the engine. This start takes place after the alignment of the lambda probe has ended.
- FIG. 2 shows a further embodiment of the method according to the invention on the basis of a block diagram.
- a block 210 designates the driving state of the vehicle in which the internal combustion engine is active. In a state 220, a coasting operation of the internal combustion engine takes place.
- the overrun mode is characterized by the fact that there is no torque requirement. If the overrun phase proves to be too short, since there is a torque requirement, then this torque requirement is initially covered by the at least one connected electric motor and in this way the period for a lambda probe calibration is extended. In this case, a motor drag operation takes place.
- the thrust functions are performed when the hybrid vehicle with a minimum speed electrically, and in particular even when the driver operates neither the gas nor the brake pedal, so the vehicle creeps to a certain extent electric motor.
- the internal combustion engine is only towed until pure fresh air is present at the location of the exhaust gas sensor to be adjusted.
- the vehicle is driven by means of the internal combustion engine.
- the engine towing takes place by purging the exhaust system, step 320.
- this purging of the exhaust system is completed, in either operating state, either purely electrical operation or so-called “sailing” takes place, with the engine further deactivated ("Stands") (step 330).
- the actual adjustment of the measurement signal can then be carried out with the internal combustion engine stationary, since further gas exchange at the location of the exhaust gas sensor is not required.
- the drag operation does not have to be continued during the actual balancing, as a result of which the overall energy efficiency continues to increase. If the calibration of a broadband lambda probe is performed, moreover, the pumping current of this broadband lambda probe is not maintained in every stoppage phase of the internal combustion engine, but is then released when the criteria for a calibration are met
- the method described above can be provided purely in principle for the thrust compensation of lambda probes. But it can also be used in other sensor or balancing functions, in which air is assumed in the exhaust system. For example, it can also be applied to the adjustment of the oxygen signal of NOx sensors or in the calibration of fuel metering devices using lambda probes, as they emerge for example from DE 199 45 618 A1.
- the method described above can be realized purely in principle as a computer program product and be implemented on the control unit of the hybrid vehicle and run there.
- the program code can be stored on a data memory or mobile computer or the like and be imported into the control unit.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- General Engineering & Computer Science (AREA)
- Hybrid Electric Vehicles (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020147022065A KR20140120905A (ko) | 2012-02-06 | 2013-01-29 | 하이브리드 차량 내 배기 가스 센서 및 연료 계량 장치를 보정하기 위한 방법 |
US14/376,583 US9211787B2 (en) | 2012-02-06 | 2013-01-29 | Method for calibrating exhaust gas probes and fuel dosing devices in a hybrid vehicle |
CN201380008078.1A CN104080679B (zh) | 2012-02-06 | 2013-01-29 | 用于对具有混合驱动装置的车辆的、废气探测仪的测量信号或者燃料计量装置的调节信号进行校准的方法 |
JP2014555166A JP2015511195A (ja) | 2012-02-06 | 2013-01-29 | ハイブリッド車両内の排気センサ及び燃料調量装置を較正する方法 |
EP13704888.0A EP2812220A1 (de) | 2012-02-06 | 2013-01-29 | Verfahren zur kalibrierung von abgas-sonden und kraftstoffdosiereinrichtungen in einem hybridfahrzeug |
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DE102013201316A DE102013201316A1 (de) | 2012-02-06 | 2013-01-28 | Verfahren zur Kalibrierung von Abgas-Sonden und Kraftstoffdosiereinrichtungen |
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EP (1) | EP2812220A1 (de) |
JP (1) | JP2015511195A (de) |
KR (1) | KR20140120905A (de) |
CN (1) | CN104080679B (de) |
DE (1) | DE102013201316A1 (de) |
WO (1) | WO2013117455A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2015040564A (ja) * | 2013-08-22 | 2015-03-02 | ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング | 内燃機関のセンサにおいて基準測定を実施する方法及び装置 |
Families Citing this family (6)
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DE102017201643A1 (de) | 2016-03-03 | 2017-09-07 | Ford Global Technologies, Llc | Verfahren zum Durchführen einer Referenzmessung an einem Gassensor einer Brennkraftmaschine sowie Hybridelektroantrieb |
DE102016211608A1 (de) | 2016-06-28 | 2017-12-28 | Robert Bosch Gmbh | Verfahren und Steuereinrichtung zur Korrektur eines Ausgangssignals eines Abgassensors |
DE102017003240A1 (de) * | 2017-04-04 | 2018-10-04 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Verfahren zum Regenerieren einer Abgasnachbehandlungsvorrichtung eines Kraftfahrzeugs, Computerprogramm zur Durchführung des Verfahrens sowie zugeordnetes Kraftfahrzeug |
WO2022064238A1 (ja) * | 2020-09-25 | 2022-03-31 | 日産自動車株式会社 | 車両の制御方法及び車両の制御装置 |
US20220355140A1 (en) * | 2021-05-05 | 2022-11-10 | Oshkosh Corporation | Operational modes for a driveline of an electrified fire fighting vehicle |
DE102022202200B3 (de) * | 2022-03-03 | 2023-02-02 | Vitesco Technologies GmbH | Verfahren zum Kalibrieren eines Abgassensors einer Brennkraftmaschine für ein Fahrzeug und Brennkraftmaschine für ein Fahrzeug |
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- 2013-01-28 DE DE102013201316A patent/DE102013201316A1/de not_active Withdrawn
- 2013-01-29 KR KR1020147022065A patent/KR20140120905A/ko not_active Application Discontinuation
- 2013-01-29 EP EP13704888.0A patent/EP2812220A1/de not_active Withdrawn
- 2013-01-29 JP JP2014555166A patent/JP2015511195A/ja active Pending
- 2013-01-29 US US14/376,583 patent/US9211787B2/en active Active
- 2013-01-29 CN CN201380008078.1A patent/CN104080679B/zh active Active
- 2013-01-29 WO PCT/EP2013/051621 patent/WO2013117455A1/de active Application Filing
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Also Published As
Publication number | Publication date |
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DE102013201316A1 (de) | 2013-08-08 |
CN104080679A (zh) | 2014-10-01 |
CN104080679B (zh) | 2017-11-21 |
US20150142231A1 (en) | 2015-05-21 |
JP2015511195A (ja) | 2015-04-16 |
EP2812220A1 (de) | 2014-12-17 |
US9211787B2 (en) | 2015-12-15 |
KR20140120905A (ko) | 2014-10-14 |
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