WO2009059854A1 - Verfahren und vorrichtung zur durchführung sowohl einer adaption wie einer diagnose bei emissionsrelevanten steuereinrichtungen in einem fahrzeug - Google Patents
Verfahren und vorrichtung zur durchführung sowohl einer adaption wie einer diagnose bei emissionsrelevanten steuereinrichtungen in einem fahrzeug Download PDFInfo
- Publication number
- WO2009059854A1 WO2009059854A1 PCT/EP2008/063212 EP2008063212W WO2009059854A1 WO 2009059854 A1 WO2009059854 A1 WO 2009059854A1 EP 2008063212 W EP2008063212 W EP 2008063212W WO 2009059854 A1 WO2009059854 A1 WO 2009059854A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- adaptation
- emission
- diagnosis
- relevant control
- parameter
- Prior art date
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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
- 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
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D41/1402—Adaptive control
-
- 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
- F02D41/221—Safety or indicating devices for abnormal conditions relating to the failure of actuators or electrically driven elements
Definitions
- the invention relates to a method and a device for performing both an adaptation and a diagnosis in emission-relevant control devices in a vehicle, such as the injection of fuel into the respective cylinders.
- a new drive cycle starts with the restart of the engine (after switching off the ignition key) and ends with the beginning of the following driving cycle.
- the driving cycle usually consists of different driving conditions, some of which may be more or less suitable for diagnostic and adaptation purposes.
- the fuel cutoff is relevant for the special diagnosis and adaptation. The longer a drive cycle lasts, the longer is usually the required driving condition.
- a similar procedure is used for both diagnosis and adaptation of the system.
- the error detection can not be activated or carried out simultaneously with the adaptation, but successively.
- this either adapts the system to a slower pace or does not diagnose it often enough.
- a method is used in which the diagnosis and the adaptation are carried out consecutively for all emission-relevant control devices. Because the diagnosis and the adaptation form a coherent procedure, which takes a correspondingly long time until all procedural.
- a rather short driving state which is considered in one driving cycle, under certain circumstances, for example, only one adaptation can be carried out, but no subsequent diagnosis.
- the diagnosis may not be performed sufficiently frequently in the driving cycle in the driving states considered therein, as determined for example by legal requirements.
- diagnostic procedures were fast enough to meet the execution frequency of a diagnosis.
- Such an adaptation could be used directly as a diagnosis. Only by newer, especially slow adaptations, a separation of adaptation is required to ensure the necessary execution frequency for the diagnosis.
- an injection valve characteristic of a controlled fuel injection valve that reflects a reference injection behavior is adapted to age-related changes in an actual injection behavior.
- the injector is intermittently driven. At least one working cycle with activation of a working cycle without activation of the injection valve precedes this.
- a rotational speed value of the internal combustion engine is detected for the working cycle with control and at least one for the working cycles without control. Based on the difference of the detected values, a correction of the injection characteristic is then carried out.
- the object of the invention is to provide a method and a device, in which an implementation of at least a part of the adaptation and the diagnosis in a respective predetermined driving state of a driving cycle can be ensured.
- this object is achieved by providing a method and a device for carrying out at least part of an adaptation and a diagnosis in emission-relevant control devices of a vehicle.
- a diagnosis is carried out in at least one of the emission-relevant control devices when it is determined that the vehicle has reached a certain predetermined driving state, for example a fuel cut-off phase or another driving state suitable for diagnosis and adaptation.
- a certain predetermined driving state for example a fuel cut-off phase or another driving state suitable for diagnosis and adaptation.
- at least one parameter of an operating point of at least one emission-relevant control device is determined and optimized when it deviates from a desired range or nominal value.
- At least one adaptation section or part of the adaptation is carried out in at least one of the emission-relevant control devices, wherein at least one parameter of several operating points of the emission-relevant control devices is determined and optimized in the adaptation if this deviates from a desired range or setpoint.
- the adaptation and the diagnosis are combined and executed as a unit in a driving state of a driving cycle.
- the diagnosis and the adaptation is divided.
- the part which can be carried out quickly and permits a first rough adaptation in this case the optimization of at least one parameter of an operating point of an emission-relevant control device, is combined.
- the part in which the fine adjustment takes place is here the adaptation or adaptation of at least one parameter of several operating points of the emission-relevant control devices.
- the adaptation requires a longer time in the implementation for the respective emission-related control devices, it is divided into sections, wherein at least a section is performed in the predetermined driving state of the driving cycle. In this way it can be ensured that at least part of the diagnosis and adaptation can be carried out in a respective predefined driving state of a driving cycle, in contrast to the prior art.
- the adaptation is subdivided into adaptation steps as a function of a predefined driving state.
- the length of the driving state can be determined, for example, by legal requirements or by assumptions as to how long, for example, the average predetermined driving state, such as a fuel cut-off phase, lasts. In one driving cycle one or more, including different driving conditions can be considered.
- the division of the adaptation into individual sections in which parts of the adaptation are carried out on the basis of such a driving state has the advantage that the adaptation does not have to be carried out completely in a first driving state, but very simply to several such driving states, for example several fuel cut-off phases or other driving conditions , can be split up wisely.
- the adaptation By dividing the adaptation based on the length of, for example, a prescribed test cycle or on the basis of an average driving state, it is possible to ensure that the complete diagnosis is carried out for this given test cycle or the average driving state. is required (legally). In addition, it is ensured that always a part of the adaptation takes place and not just either a diagnosis or an adaptation as in cases in the prior art. In normal operation (without consideration of a test cycle), it is ensured that at least part of the adaptation and a maximum possible proportion of the diagnosis are always carried out. This ensures that the system is always adaptable and the diagnostic execution rate is as high as possible.
- the adaptation is subdivided so that at least one adaptation step and one diagnosis can be carried out in at least one emission-relevant control device within a predefined driving state. In this way, it can be ensured that in the case of driving states which are not shorter than the test cycle prescribed by law, for example, the complete diagnosis and the adaptation can be carried out at least in part.
- the predetermined driving state for example, a fuel cut-off phase.
- the fuel cut-off phase has the advantage that in this phase, the driver goes off the gas and the accelerator pedal is no longer actuated, so that injections of very small amounts of fuel done unaffected by the driver. These can be relatively accurately assigned to the cylinders and therefore a more accurate adjustment of a parameter such as the fuel injection amount done.
- the opening times of the injection valves are optimized for different operating points depending on the desired fuel quantity and the rail pressure. That is, for a given amount of fuel and a given rail pressure, the optimal injection time is determined.
- the injected fuel quantity has the advantage, for example, that it can be optimized in a particularly simple manner by suitably adjusting the injection time.
- a parameter is within a desired range, wherein the parameter is adapted in an adaptation cycle of the diagnosis if this parameter is outside the target range.
- the parameter is preferably approximated to a predetermined desired value in the desired range. This can be done a first rough adjustment. If the parameter reaches the setpoint after the first adjustment cycle, further adaptation of the parameter can also be dispensed with.
- the adaptation determines whether a parameter is within a desired range. In the event of a deviation from the setpoint value, the fine adjustment parameter is approximated as far as possible to the setpoint value in one or more adjustment cycles.
- the adaptation has the advantage that the parameter can be further optimized compared to the diagnosis.
- an error value is stored if the parameter is further outside the desired range after the completion of the diagnosis or the adaptation.
- the error value may, for example, be a scalar quantity that is correlated to the deviation from the desired value and / or an error code that indicates that the emission-relevant control device is faulty. This has the advantage that such an error value can be retrieved later and determined from it, which of the emission-relevant control devices are faulty.
- an overall error value is formed from the error values of the emission-relevant control devices and compared with a predefined threshold value, for example an emission limit value. If the total error value exceeds, for example, the emission limit value, a warning message can be issued to the driver by lighting up a warning lamp so that he can visit a workshop in good time.
- FIG. 1 is a diagram in which a diagnosis of cylinders of a vehicle in a driving state at the beginning of the driving state is performed
- FIG. 2 is a diagram in which a diagnosis and an adaptation of cylinders of a vehicle in a driving state are performed according to an embodiment of the invention
- FIG. 3 is a diagram in which a diagnosis of cylinders of an engine during several or more
- FIG. 1 shows a diagram which shows the execution of a diagnosis or a first, rather “rough" adaptation of emission-relevant control devices at the beginning of the driving state, whereby in a driving condition which is the length of, for example, a predetermined test cycle of t test 20 minutes, a diagnosis in the individual cylinders of a vehicle engine 1 to 8 performed.
- the test cycle time t Tes t is sufficient, for example, to make the diagnosis or a first "rough" adjustment of all eight cylinders 1-8 of the vehicle engine, however, the test cycle time t Test is not In other words, in the present test cycle it was possible to carry out a diagnosis of all the cylinders 1-8 but not an adaptation of the cylinders, resulting in short driving cycles the adaptation can not be performed at all, since the total usable time in deceleration phases is used to execute the diagnosis.
- the emission-relevant control device in this case the respective cylinder, is optimized, for example with regard to its emission behavior.
- Operating point which allows a direct and / or indirect inference, for example, on an increase in emissions.
- An example of such a parameter of an operating point is the injected fuel quantity in the respective cylinder in a predetermined driving state or operating state.
- other parameters can be taken into account that allow a direct and / or indirect inference to an emission behavior. In the following an example of the implementation of a diagnosis is explained in more detail.
- the diagnosis usually performs a coarser adaptation of the emission-relevant control devices compared with the adaptation when it is determined that a parameter deviates from a desired range or nominal value.
- a fine adaptation of the emission-relevant control devices takes place, for example, from the parameter previously adapted in the diagnosis.
- the adaptation For example, considered or optimized at least one parameter in several or substantially all operating points of a respective cylinder, if it deviates from a desired range or setpoint.
- One such parameter is, for example, the injection time, which is optimized to obtain a desired amount of fuel injection.
- the fuel injection quantity and the rail pressure are predetermined, for example. In addition to this parameter but also other parameters or combinations of parameters can be optimized in the respective operating points.
- Rail pressure are adapted, for example, the control values for the actuators that adjust the rail pressures.
- Another example is the adaptation of the detection of the position of an air control damper, in particular of the measured values when the damper is fully open or closed.
- the adaptation usually takes longer than the diagnosis. The reason for this is that the diagnosis is made for, for example, just a desired amount of fuel and a set rail pressure.
- the adaptation for example, contains four fuel quantities and four different ones
- the invention proceeds as follows.
- a first division of the adaptation into several sections, ie, for example, at least two or more sections.
- a predetermined driving state is determined while driving, such as a fuel cut-off phase
- the invention begins first with a first adaptation section adapt .1.
- an atomic adaptation step can be carried out at the beginning of the driving state. This is followed by the complete diagnosis of at least some or all of the emission-relevant control devices.
- the respective parameter of these emission-relevant control devices is within a desired range or has reached a predetermined target value, it can be determined, for example, that the adaptation for these parameters does not need to be continued with these emission-relevant control devices since it already sets the target value is reached. Otherwise, following the diagnosis, for example, the adaptation or the further adaptation sections are activated for the remainder of the driving state.
- the adaptation is reactivated after the diagnosis for a further adaptation section, for example after the diagnosis has been completely carried out for some or all emission-relevant control devices, or in a next predetermined driving condition.
- the activation strategy of the diagnosis and the adaptation it can be ensured by the activation strategy of the diagnosis and the adaptation that the necessary adaptation is carried out.
- the execution frequency of the error detection or the detection of the deviation from the desired range or setpoint can be maximized. In the case of errors detected in the diagnosis, these can be corrected in the adaptation. Activation of the adaptation is thus not required continuously.
- predetermined driving conditions are determined during normal driving, in which an adaptation and a diagnosis are carried out.
- the invention is designed so that it can be ensured that at least part of the adaptation and diagnosis can be performed when a detected, predetermined driving state, such as a fuel cut-off phase, is not shorter than a predetermined test cycle time t Tes t.
- the test cycle time is, as mentioned above, for example, by legal requirements determined or based on empirical values, how long a certain driving condition lasts on average.
- test cycle time t test can basically also include any other period, depending on the function, purpose or legal requirements.
- all cylinders 1-8 can also be checked, wherein the adaptation in a first adaptation section adapt .1 only performs a predetermined part on adaptation steps for the cylinders 1-8 and in a second and third adaption section adapt.2, adapt .3 in each case the remaining adaptation steps for the cylinders 1-8, until all adaptation steps of the adaptation for all cylinders 1-8 have been completed.
- the adaptation sections adapt.1, adapt.2, a-dapt .3 can always be constructed the same or constructed differently, wherein, for example, the adaptation sections of the aforementioned examples can be combined with one another.
- the division of the adaptation into adaptation sections allows for a multiplicity of variants, in order to achieve an adaptation of all cycles at the end. linder to reach.
- the adaptation can be divided into any number of adaptation sections.
- the diagnosis of at least one part or all of the cylinders 1-8 is now carried out. It may be possible, as shown in FIG. 2, for example, that in the test cycle the test cycle time t Test is sufficient to diagnose all eight cylinders tl-t8. In the remaining time following the diagnosis of the cylinders 1-8 can be started with the second adaptation section adapt .2, for example, if it is determined that a parameter of a cylinder deviates from a desired value. This deviation can then be corrected, for example, by the adaptation sections adapt .2 and adapt .3.
- the adaptation section adapt In the first test cycle during the test cycle time t test, for example, 2 can not be completely terminated and therefore, once a predetermined driving state is again detected, 2 is completed. Thereupon, as shown in FIG. 2, the third adaptation section adapt. 3 can be started. The third adaptation section adapt .3 then again follows the continuation of the diagnosis of the cylinders 1-8 (not shown in FIG. 2). The adaption is concluded when all adaptation sections adapt.1, adapt.2, adapt .3 have been carried out at the end, and thus all cylinders 1-8 have been subjected to an adaptation if, for example, they deviate from a reference range or setpoint in the diagnosis are. Accordingly, the diagnosis for all cylinders 1-8 was carried out. Subsequently, the adaptation and diagnosis, for example, begins again.
- the minimum duration t test can also be selected longer or shorter than 20 minutes, depending on function, purpose or legal Specification.
- the subdivision of the adaptation sections a-dapt.l, adapt.2, adapt .3, etc. of the adaptation can then also be suitably selected to ensure that at least one adaptation section adapt .1 can be carried out and at least one, several or all cylinders 1-8 can be subjected to a diagnosis.
- Fig. 3 the case is shown when, for example, the diagnosis of all cylinders 1-8 is not completed during a driving state.
- the implementation of the adaptation was omitted in the diagram for reasons of clarity.
- a diagnosis or diagnosis cycles tl-t5 for at least five cylinders 1-5 can be carried out in addition to a first adaptation section (not shown).
- a second adaptation section (not shown) is performed and further a diagnosis or diagnostic cycles t6- t8, for example, the next three cylinders 6-8.
- the diagnosis is actually completed for all cylinders 1-8 and could be terminated at this point while the adaptation continues until it is also completed for all cylinders 1-8.
- it is in For example, in such a case, it may be desirable to continue the adaptation of the cylinders beginning, for example, with the cylinder 1. In this case, for example, within the time of the predetermined driving condition besides the cylinders 6-8, the cylinders 1-3 or, as in FIG.
- cylinders 1-5 are adjusted.
- At least one part of the diagnosis and a part of the adaptation of emission-relevant control devices can be achieved at the same time in a predetermined driving state and at the same time the result of the diagnosis that is as current as possible.
- the diagnosis can be carried out as follows.
- a diagnostic cycle t 1 for a first cylinder for example, an amount of fuel is initially injected into the first cylinder with a predetermined injection time, wherein the injection time used is, for example, an injection time that was used in a preceding cycle. It is then determined or estimated in a first estimate whether the amount of fuel is in a desired range or outside the desired range. If the quantity of fuel deviates from the desired range or also to a desired value, then an adaptation cycle is started. In this adjustment cycle, the injection time is now adjusted according to the amount of fuel of the first estimation to achieve improved fuel combustion.
- the injection time is adjusted in such a way that, if possible, the fuel quantity reaches a predetermined optimized setpoint value or approaches this setpoint value.
- the amount of fuel is then re-estimated following the injection process with the new injection time. If the fuel quantity is within or again within the desired range or tolerance range, then an error value of zero is stored, since in this case substantially no emission increase is caused by this first cylinder.
- a so-called error code DTC Diagnostic Trouble Code
- Error value scaling size
- DTC is stored as error code that the first cylinder is faulty.
- the ascertained increase in emissions in the first cylinder does not necessarily have to be so great that an emission value reaches or exceeds a critical value, for example the emission limit. It is crucial that the first cylinder contributes in its injection behavior to an increase in emissions, with a correction alone on an adaptation cycle, for example, using the injection time is not possible.
- the error values of the individual cylinders 1-8 are added at the end to a total error value. If, for example, this exceeds a predetermined threshold value, for example an emission limit value, then an error message can be output to the driver, for example.
- a predetermined threshold value for example an emission limit value
- the DTC error codes for the individual cylinders can be retrieved, for example, in a workshop and it can be determined which of the cylinders is faulty.
- Such a diagnosis has the advantage that the cylinder can be subjected to a first "coarse" adaptation, whereby, as described above, an injection time is adapted in an adaptation cycle .
- This can be carried out relatively quickly Injection times for injecting fuel into the cylinder during the predefined driving state can be used and optimized, for example, in a plurality of adaptation cycles so that they reach a predetermined, optimized setpoint or at least approached as far as possible
- one or more parameters in the respective operating points are optimized during the adaptation.
- the fuel cut-off phase as a predetermined driving state has the advantage that the driver in this cycle from the gas, so that parameters such as the injected amount of fuel is not affected by the operation of the pedal.
- parameters such as the injection time
- further parameters can be considered and optimized in the adaptation as well as in the diagnostics.
- Such parameters include, for example, occurring deviations in the fuel pressure sensors or FUP sensors, the exhaust gas recirculation, the turbocharger, the Exhaust aftertreatment, the driving values for the actuators setting the rail pressures, etc., just to name a few more examples.
- the absence of pre-injections and / or post-injections can also be taken into account as parameters.
- other suitable driving conditions or combinations of driving conditions may also be considered.
- the number and sequence of diagnosis and adaptation or respective adaptation section in the predefined driving state can be varied as desired.
- the number and sequence as shown in Figs. 1-3 are merely exemplary. The invention is not limited thereto.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200880116374.2A CN101855437B (zh) | 2007-11-09 | 2008-10-02 | 用于在车辆中的与排放相关的控制装置上既执行匹配又执行诊断的方法和仪器 |
KR1020107012047A KR101503666B1 (ko) | 2007-11-09 | 2008-10-02 | 차량의 배기-관련 제어 장치의 어댑테이션과 진단을 수행하기 위한 방법 및 장치 |
US12/741,308 US8408054B2 (en) | 2007-11-09 | 2008-10-02 | Method and device for carrying out an adaptation and a diagnosis of emission-relevant control devices in a vehicle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102007053406.1 | 2007-11-09 | ||
DE102007053406A DE102007053406B3 (de) | 2007-11-09 | 2007-11-09 | Verfahren und Vorrichtung zur Durchführung sowohl einer Adaption wie einer Diagnose bei emissionsrelevanten Steuereinrichtungen in einem Fahrzeug |
Publications (1)
Publication Number | Publication Date |
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WO2009059854A1 true WO2009059854A1 (de) | 2009-05-14 |
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ID=40377697
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2008/063212 WO2009059854A1 (de) | 2007-11-09 | 2008-10-02 | Verfahren und vorrichtung zur durchführung sowohl einer adaption wie einer diagnose bei emissionsrelevanten steuereinrichtungen in einem fahrzeug |
Country Status (5)
Country | Link |
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US (1) | US8408054B2 (de) |
KR (1) | KR101503666B1 (de) |
CN (1) | CN101855437B (de) |
DE (1) | DE102007053406B3 (de) |
WO (1) | WO2009059854A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103899429A (zh) * | 2012-12-29 | 2014-07-02 | 比亚迪股份有限公司 | 一种汽车排放的匹配控制系统及其控制方法 |
EP3851656A1 (de) * | 2020-01-16 | 2021-07-21 | IAV GmbH | Verfahren und vorrichtung zur auswertung von im praktischen fahrbetrieb eines fahrzeuges ermittelten messwerten |
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DE102007057311B3 (de) * | 2007-11-28 | 2009-06-10 | Continental Automotive Gmbh | Verfahren und Vorrichtung zur Fehlererkennung bei emissionsrelevanten Steuereinrichtungen in einem Fahrzeug |
JP5675466B2 (ja) * | 2011-03-31 | 2015-02-25 | 三菱重工業株式会社 | エンジンの燃焼診断信号異常時のパイロット噴射タイミング制御方法および装置 |
DE102011089370A1 (de) * | 2011-12-21 | 2013-06-27 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Betreiben einer Kaltstart-Emissions-Steuerung einer Brennkraftmaschine |
DE102013224716A1 (de) | 2013-12-03 | 2015-06-03 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Betreiben eines Kraftfahrzeugs |
DE102014006319A1 (de) | 2014-04-30 | 2015-11-05 | Avl List Gmbh | System zur Beurteilung und/oder Optimierung des Betriebsverhaltens eines Fahrzeugs |
CN109144022B (zh) * | 2017-06-19 | 2022-09-20 | 汽车交通工程有限公司 | 用于检验车辆的控制器的软件的方法和设备 |
CN114047741B (zh) * | 2021-11-10 | 2024-03-19 | 潍柴动力股份有限公司 | 自修复诊断限制系统临时中断功能的实现方法及相关装置 |
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2007
- 2007-11-09 DE DE102007053406A patent/DE102007053406B3/de not_active Expired - Fee Related
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2008
- 2008-10-02 WO PCT/EP2008/063212 patent/WO2009059854A1/de active Application Filing
- 2008-10-02 KR KR1020107012047A patent/KR101503666B1/ko active IP Right Grant
- 2008-10-02 US US12/741,308 patent/US8408054B2/en not_active Expired - Fee Related
- 2008-10-02 CN CN200880116374.2A patent/CN101855437B/zh not_active Expired - Fee Related
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WO2002020969A1 (de) * | 2000-09-04 | 2002-03-14 | Robert Bosch Gmbh | Verfahren und elektronische steuereinrichtung zur diagnose der gemischbildung einer brennkraftmaschine |
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WO2004053316A1 (de) * | 2002-12-10 | 2004-06-24 | Siemens Aktiengesellschaft | Verfahren zum anpassen der charakteristik eines einspritzventils |
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Cited By (3)
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CN103899429A (zh) * | 2012-12-29 | 2014-07-02 | 比亚迪股份有限公司 | 一种汽车排放的匹配控制系统及其控制方法 |
CN103899429B (zh) * | 2012-12-29 | 2017-05-24 | 比亚迪股份有限公司 | 一种汽车排放的匹配控制系统及其控制方法 |
EP3851656A1 (de) * | 2020-01-16 | 2021-07-21 | IAV GmbH | Verfahren und vorrichtung zur auswertung von im praktischen fahrbetrieb eines fahrzeuges ermittelten messwerten |
Also Published As
Publication number | Publication date |
---|---|
KR101503666B1 (ko) | 2015-03-18 |
US8408054B2 (en) | 2013-04-02 |
KR20100105562A (ko) | 2010-09-29 |
CN101855437B (zh) | 2014-03-26 |
US20100275680A1 (en) | 2010-11-04 |
CN101855437A (zh) | 2010-10-06 |
DE102007053406B3 (de) | 2009-06-04 |
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