EP2464849A1 - Verfahren und vorrichtung zur dynamik-diagnose einer abgas-sonde - Google Patents
Verfahren und vorrichtung zur dynamik-diagnose einer abgas-sondeInfo
- Publication number
- EP2464849A1 EP2464849A1 EP10737862A EP10737862A EP2464849A1 EP 2464849 A1 EP2464849 A1 EP 2464849A1 EP 10737862 A EP10737862 A EP 10737862A EP 10737862 A EP10737862 A EP 10737862A EP 2464849 A1 EP2464849 A1 EP 2464849A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- signal
- calculated
- exhaust gas
- measured
- value
- 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
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
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1493—Details
- F02D41/1495—Detection of abnormalities in the air/fuel ratio feedback system
-
- 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
- F02D41/1454—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
- F02D41/1458—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 with determination means using an estimation
-
- 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
- F02D2041/1413—Controller structures or design
- F02D2041/1432—Controller structures or design the system including a filter, e.g. a low pass or high pass filter
-
- 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
Definitions
- the invention relates to a method for dynamic diagnosis of an exhaust gas probe arranged in an exhaust passage of an internal combustion engine, the dynamic diagnosis being carried out after a change in a lambda value of the exhaust gas and on the basis of a comparison of a measured signal rise with an expected increase of the signal.
- the invention further relates to a device for dynamic diagnosis of a in a
- Exhaust duct of an internal combustion engine arranged exhaust gas probe whose output signal is supplied to a motor control, which are at least still information of an input air mass and a fuel metering switched as further input signals
- the storage capacity of an exhaust gas purification system for oxygen is utilized to take up oxygen in lean phases and to release it again in the fat phase. This ensures that oxidizable noxious gas components of the exhaust gas can be converted.
- One of the exhaust gas purification downstream exhaust probe serves to monitor the oxygen storage capacity of the emission control system. The oxygen storage capacity must be monitored as part of the on-board diagnostics, since it represents a measure of the conversion capability of the emission control system.
- the exhaust gas purification system is initially occupied in a lean phase with oxygen and then emptied in a fat phase with a known lambda exhaust gas, taking into account the passing exhaust gas or emptied the exhaust gas purification system initially in a fatty phase of oxygen and then in a lean phase with a Exhaust gas known lambda filled in consideration of the passing amount of exhaust gas.
- the lean phase is terminated when the emission control system downstream exhaust gas sensor detects the oxygen that can no longer be stored by the emission control system.
- a rich phase is terminated when the exhaust gas probe detects the passage of rich exhaust gas.
- an output signal of the exhaust gas probe serves as additional information for a lambda control, which, however, is largely based on an output signal of a lambda probe arranged in front of the exhaust gas purification system.
- the output signal of the exhaust gas probe slows down to changes in the exhaust gas composition and deviations in the diagnosis of the exhaust gas purifying system may result, which could lead to a malfunctioning exhaust gas purifying system being incorrectly evaluated as being functional becomes.
- a dynamic monitoring of the exhaust gas probe is therefore assigned a high priority.
- a known method for the diagnosis of an exhaust gas purification system also evaluates the ratio of the amplitudes of the output signals of the lambda probe arranged upstream of the exhaust gas purification system and the downstream exhaust gas probe.
- a functional exhaust gas cleaning system dampens the amplitude of a vibration of the.
- Oxygen content of the exhaust gas at the output of the internal combustion engine so that the ratio of the amplitudes before and after the emission control system gives a high value.
- a slowed reaction of the downstream exhaust gas probe also leads to a reduction in the amplitude of its output signal, whereby the oxygen storage capacity of the Abgastherapies- aläge is rated as too high.
- An exhaust emission control system that no longer complies with the requirements may possibly be incorrectly classified as functioning correctly.
- Dynamics diagnosis is made more difficult by the fact that the output signal of the exhaust gas probe depends on the initial and final lambda values in the case of a rich-lean or lean-fat jump. Added to this is the above-described influence of the emission control system, to which the influences of temperature and age of the emission control system are added.
- a method for dynamic diagnosis of an exhaust gas probe is given in DE 19722334.
- the exhaust gas probe is arranged in the exhaust gas behind an emission control system.
- the rate of change of an output signal of the exhaust gas probe is used, which occurs, for example, after the start of a phase with overrun operation.
- Catalyst influence can be neglected. In such operating states, however, undesirable conditions can occur when reinserting after the overrun phase.
- DE 10 2006 041 477 A1 describes a method for dynamic diagnosis of an exhaust gas probe arranged in an exhaust gas duct of an internal combustion engine according to an exhaust gas purification system, the dynamic diagnosis simultaneously with a sudden change in a lambda value of the exhaust gas from rich to lean or from lean to rich.
- the current function of the dynamic monitoring calculates two (VSchwell values for a valid load-thrust transition on the basis of the measured ( ⁇ ) concentration.
- the measured rise time of the ( ⁇ concentration from the first to the second threshold value is used as an evaluation criterion for the dynamic properties of the exhaust gas. If the measured rise time remains below a fixed threshold value, an intact message occurs, otherwise a defect is reported.
- the disadvantage here is that a definition of the operating range of the component tolerances of the upstream components, including sensors and actuators depends. Any drifting of the component characteristic is not taken into account in fixed threshold values. Furthermore, with these fixed threshold values only a limited operating range for load changes for a dynamic
- Diagnosis can be used. Likewise, dynamic properties of the exhaust gas probe with fixed threshold values can not always be correctly diagnosed, so that as a result a dynamically defective exhaust gas probe can be rated as OK, which is massive against the background Increased or Increasing On-Board Diagnostic (OBD) Legislators is Critical.
- OBD On-Board Diagnostic
- the object relating to the method is achieved in that, in the case of a load-thrust transition, a nominal / actual comparison between a calculated O 2 signal and an O 2 signal measured with the exhaust gas probe or between these signals derived signals are performed.
- dynamic processes can be considered more reliably than the prior art, so that an improved selectivity, regardless of the operating point, is made possible. In this way, increased legal requirements with regard to on-board diagnostics can be met.
- a preferred variant of the method provides that the calculation of the O 2 signal from air mass and injection quantity is performed.
- the calculated O 2 signal and the measured O 2 signal are filtered by means of, for example, a low-pass filter and from this a calculated and filtered O 2 signal and a measured and filtered O 2 signal are formed , it can be achieved, for example, that short-term disturbances in the signal transmission or in the signal processing can have less of a detrimental effect on the diagnosis result, with which a more robust dynamic diagnosis can be achieved.
- the dynamic properties of the exhaust gas probe can be analyzed directly. Compared to a pure evaluation of the rise time between the above-mentioned CV thresholds, the properties of the exhaust gas probe can also be reliably determined depending on the respective operating condition. The evaluation of this relative change is fundamentally less susceptible to interference than an evaluation of an absolute change of the signal compared to possible offset influences within the evaluation system and the sensors or actuators involved.
- a first and a second O 2 threshold value of the calculated CV signal are determined in the load-thrust transition based on the signal profile of the calculated and filtered 0 2 signal. It is provided that the threshold value determination of the O 2 threshold values is carried out again at each load-thrust transition used for dynamic diagnosis. In a variant of the method it is further provided that in the case of a valid load-thrust transition based on the measured O 2 signal, a CV threshold value of the measured CV signal is determined, the calculation of which is carried out identically to the calculation of the first CV threshold value of the calculated CV signal. In this case, based on the respective signal stroke, a percentage identical threshold is used as the basis.
- an integration period for the calculated CV signal can be determined.
- a CV gradient signal for the measured value is integrated for the measured 0 2 signal or for the calculated and filtered CV signal, and the actual value is derived from the result.
- the integration duration of the calculated CV signal is used as the integration duration of the measured O 2 signal.
- a trigger time is used, which is determined when the measured O 2 signal or the measured and filtered O 2 signal exceeds the O 2 threshold of the measured CV signal.
- the thus calculated integrals for the setpoint and the actual value take into account in particular the dynamic effects and are also robust against offsets and short-term signal interference.
- the actual value and the desired value can be set in relation to each other, and from the result of a dynamic assessment of the exhaust gas probe are derived, with decreasing dynamics, the integral for the actual value compared to the integral for the setpoint decreases.
- the dynamic evaluation is carried out by direct comparison between the absolute CV gradient signal for the calculated value and the absolute CV gradient signal for the measured value.
- the dynamic assessment is determined by direct Comparison of the time courses of the calculated CV signal and the measured O 2 signal or the filtered CV signals is performed. Both variants also meet the requirements for a reproducible selectivity of dynamic monitoring, but are less expensive and can therefore be used in simplified OBD units.
- the object concerning the device is achieved by the fact that the engine control system determines devices for determining a calculated CV signal from information of the incoming air mass, for example by evaluating the signals of an air mass meter or by means of a model, and the fuel metering as well as devices for filtering and / or gradient formation and / or to integrate the calculated CV signal and one of the exhaust gas
- Probe has measured 0 2 signal, wherein the dynamic diagnosis in a load-shear transition, a target / actual comparison between the calculated CVSignal and measured with the exhaust gas probe 0 2 signal or between, from these signals derived signals is feasible.
- the facilities necessary for carrying out the process such as low-pass filter units, differentiating units, integrating units and threshold value
- Calculation units can be implemented within the higher-level engine control as a hardware and / or software solution and thus form an important functional group within an on-board diagnostic device.
- separate diagnostic devices are conceivable that can communicate with the parent engine control.
- FIG. 1 in a schematic representation of the technical environment in which the inventive
- FIG. 2 is a principle timing diagram for various signal values of an exhaust gas probe during dynamic diagnostics
- FIG. 3 shows by way of example the preparation of the signal values of a new exhaust gas probe
- FIG. 4 shows by way of example the processing of the signal values of an aged, inert exhaust gas probe
- FIG. 5 shows the basic procedure for calculating CV threshold values
- FIG. 6 shows the basic procedure for integrating the 0 2 gradient signal of a new exhaust gas probe
- FIG. 7 shows the basic procedure for integrating the 0 2 gradient signal of an aged, inert exhaust gas probe.
- FIG. 1 shows schematically as an example the technical environment in which the method according to the invention for dynamic diagnosis of an exhaust gas probe 17 can be used.
- An internal combustion engine 10 is supplied with air via an air supply 11 and determines its mass with an air mass meter 12.
- the air mass meter 12 may be designed as a hot-film air mass meter.
- the exhaust gas of the internal combustion engine 10 is discharged via an exhaust passage 18, wherein in the flow direction of the exhaust gas behind the internal combustion engine 10, an exhaust gas cleaning system 16 is provided.
- a motor controller For controlling the internal combustion engine 10 is a motor controller
- the lambda probe 15 determines a lambda actual value of an internal combustion engine 10 supplied fuel-air mixture; it can be used as broadband
- Lambda probe be executed.
- the exhaust gas probe 17 determines the exhaust gas composition after the exhaust gas purification system 16.
- the exhaust gas probe 17 may be formed as a jump probe.
- the inventive method is shown with reference to the timing diagrams 20 shown in Figures 2 to 7, in which a course of various signal values 21 of the exhaust gas probe 17 and derived signals are shown over a time axis 24 at a load-thrust change.
- the timing diagrams 20 show by way of example that initially a rich phase 22 is assumed, and then the exhaust gas composition changes as a result of the load-thrust change, such that lean exhaust gas with an increased ( ⁇ concentration reaches the exhaust gas probe 17. Opposite the fat phase 22, this temporal region is referred to as a lean phase 23.
- FIG. 2 shows the time profile of a calculated CV signal 26, which is based on the fuel participating in the combustion of the internal combustion engine 10 and the determined air oxygen. Both quantities can be derived from the signals of the air mass meter 12 and the fuel metering 13 from FIG. In the example shown, this signal increases during a load-thrust change. At the same time, an injection quantity 35, which is predetermined via the fuel metering 13, is reduced. In addition to the course of the calculated O 2 signal 26, the profile of a calculated and filtered CV signal 28 is shown, which no longer has short-term fluctuations compared with the unfiltered calculated 0 2 signal 26 or these are significantly reduced. Based on this, a CV gradient curve 30 for the calculated CV signal 26 is calculated.
- FIGS. 3 and 4 the further signal processing for dynamic diagnosis for a new exhaust gas probe 17 (FIG. 3) and for an aged, inert exhaust gas probe 17 (FIG. 4) are shown by way of example.
- a first O 2 threshold value of the calculated CV signal 32 and a second O 2 threshold value of the calculated CV signal 33 are calculated on the basis of the calculated and filtered Ü 2 signal 28. Parallel to this process, a measured with the exhaust gas probe 17 CVSignal 27 is converted into a measured and filtered CVSignal 29, whose course is also shown here. From the measured and filtered
- an O 2 gradient signal 30, 31 is respectively determined for the calculated value and the measured value.
- an O 2 threshold value of the measured CV signal 34 is generated. In this case, its calculation is identical to the calculation of the first 0 2 threshold value of the calculated CV signal 32.
- a time of the threshold value calculation 25 can be determined by the signal rise of the calculated CV signal 26.
- the curves of the various signal values 21 in FIG. 3 and FIG. 4 are very different and can already be used for dynamic diagnosis of the exhaust gas probe 17.
- a comparison of the calculated and the measured CV signal 26, 27 shows, for example, that in the case of a new exhaust gas probe 17 (FIG. 3) the course of the measured O 2 signal 27 follows the course of the calculated CV signal 26 relatively densely.
- the increase in the measured O 2 signal 27 in the case of an aged, inert exhaust gas probe 17 (FIG. 4) a delayed response due to the inertia is less than in the course of the calculated O 2 signal 26.
- a similar behavior is shown when comparing the filtered O 2 signals 28, 29.
- the O 2 gradient signals 30, 31 for the calculated and the measured O 2 signal 26, 27 show the difference even more clearly.
- the absolute value of the O 2 gradient signal 31 in an old, inert exhaust gas probe 17 is significantly lower than in the case of a new one
- FIG. 5 illustrates the basic procedure for calculating the O 2 threshold values 32, 33, 34.
- the absolute value of the calculated and measured O 2 signal 26, 27 with respect to the zero line corresponds in the saturated region, ie, long after the load-thrust transition, one
- This value can be used to normalize the absolute signal values 21, which are compared with the signal strokes of the calculated and the measured O 2 signal 37, 38
- a percentage threshold value 39 for the first O 2 threshold value of the calculated O 2 signal 32 is specified based on the signal deviation of the calculated O 2 signal 38.
- the second O 2 threshold value of the calculated O 2 signal 33 also becomes the same
- the determination is carried out correspondingly for the O 2 threshold value of the measured O 2 signal 34.
- the same percentage threshold value 39 is used as in the determination of the first O 2 threshold of the calculated O 2 signal 32 was used.
- the time of the threshold calculation 25 is specified in the example shown from the beginning of the drop of the injection amount 35.
- FIG. 6 and 7 show the evaluation scheme of a preferred variant of the method, wherein in FIG. 6 the evaluation on a new exhaust gas probe 17 and in FIG. 7 the evaluation on an old, inert exhaust gas probe 17 are shown.
- the dynamic diagnosis that the calculated O 2 signal 26 during the time from reaching the first O 2 - threshold value of the calculated O 2 signal 32 until reaching the second O 2 threshold value of the calculated O 2 Signal 33 integrated the O 2 gradient signal 30 for the calculated value and from the result of the integral formation a target worth 42 is derived.
- an integration period for the calculated 0 2 signal 40 can be determined.
- the CV gradient signal 31 is integrated for the measured value and an actual value 43 is derived from the result.
- the integration period for the calculated O 2 signal 40 is used as the integration duration of the measured CV signal 41.
- a trigger time 44 is used which is determined when the measured Ü 2 signal 27 exceeds the CV threshold value of the measured CV signal 34.
- the thus calculated integrals for the desired value 42 and the actual value 43 can now be used for the quantitative dynamic diagnosis.
- the ratios of the desired and actual values 42, 43 derived from the integrals can assume different values depending on the inertia of the exhaust gas probe 17 and can be used directly as a measure of the dynamics of the exhaust gas probe 17. In FIG. 7, for example, the area ratio of the two areas for the desired value and the actual value 42, 43 in relation to the area ratio in FIG. 6 is relatively small.
- the respective filtered CV signals 28, 29, as described above, can be evaluated.
- the inventive method allows a dynamic diagnosis with respect to the prior art higher selectivity, regardless of the operating point to perform. In this way, increased legal requirements with regard to on-board diagnostics can be met.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Engines (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009028367A DE102009028367A1 (de) | 2009-08-10 | 2009-08-10 | Verfahren und Vorrichtung zur Dynamik-Diagnose einer Abgas-Sonde |
| PCT/EP2010/060634 WO2011018317A1 (de) | 2009-08-10 | 2010-07-22 | Verfahren und vorrichtung zur dynamik-diagnose einer abgas-sonde |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2464849A1 true EP2464849A1 (de) | 2012-06-20 |
| EP2464849B1 EP2464849B1 (de) | 2020-04-01 |
Family
ID=42983453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10737862.2A Active EP2464849B1 (de) | 2009-08-10 | 2010-07-22 | Verfahren und vorrichtung zur dynamik-diagnose einer abgas-sonde |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8646324B2 (de) |
| EP (1) | EP2464849B1 (de) |
| CN (1) | CN102472186B (de) |
| DE (1) | DE102009028367A1 (de) |
| WO (1) | WO2011018317A1 (de) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011088296A1 (de) * | 2011-12-12 | 2013-06-13 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Dynamiküberwachung von Gas-Sensoren |
| DE102012204353A1 (de) * | 2012-03-20 | 2013-09-26 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Überwachung von Gas-Sensoren |
| DE102013201734A1 (de) * | 2013-02-04 | 2014-08-07 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Lambdasondenanordnung im Abgassystem einer Brennkraftmaschine |
| US9897028B2 (en) | 2013-06-26 | 2018-02-20 | Toyota Jidosha Kabushiki Kaisha | Diagnosis system of internal combustion engine |
| DE102013216223A1 (de) * | 2013-08-15 | 2015-02-19 | Robert Bosch Gmbh | Universell einsetzbare Steuer- und Auswerteeinheit insbesondere zum Betrieb einer Lambdasonde |
| DE102015205049A1 (de) * | 2015-03-20 | 2016-09-22 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Lambdareglers einer Brennkraftmaschine, Vorrichtung zur Durchführung des Verfahrens, Steuergeräteprogramm sowie Steuergerät-Programmprodukt |
| DE102018208861A1 (de) * | 2018-06-06 | 2019-12-12 | Robert Bosch Gmbh | Verfahren zum Plausibilisieren eines Sensorsignals |
| DE102018209609A1 (de) * | 2018-06-14 | 2019-12-19 | MTU Aero Engines AG | Inspektionsverfahren und System |
| US11760169B2 (en) | 2020-08-20 | 2023-09-19 | Denso International America, Inc. | Particulate control systems and methods for olfaction sensors |
| US11828210B2 (en) | 2020-08-20 | 2023-11-28 | Denso International America, Inc. | Diagnostic systems and methods of vehicles using olfaction |
| US11636870B2 (en) | 2020-08-20 | 2023-04-25 | Denso International America, Inc. | Smoking cessation systems and methods |
| US11932080B2 (en) | 2020-08-20 | 2024-03-19 | Denso International America, Inc. | Diagnostic and recirculation control systems and methods |
| US12017506B2 (en) | 2020-08-20 | 2024-06-25 | Denso International America, Inc. | Passenger cabin air control systems and methods |
| US12251991B2 (en) | 2020-08-20 | 2025-03-18 | Denso International America, Inc. | Humidity control for olfaction sensors |
| US11881093B2 (en) | 2020-08-20 | 2024-01-23 | Denso International America, Inc. | Systems and methods for identifying smoking in vehicles |
| US12269315B2 (en) | 2020-08-20 | 2025-04-08 | Denso International America, Inc. | Systems and methods for measuring and managing odor brought into rental vehicles |
| US11760170B2 (en) | 2020-08-20 | 2023-09-19 | Denso International America, Inc. | Olfaction sensor preservation systems and methods |
| US11813926B2 (en) | 2020-08-20 | 2023-11-14 | Denso International America, Inc. | Binding agent and olfaction sensor |
| US12377711B2 (en) | 2020-08-20 | 2025-08-05 | Denso International America, Inc. | Vehicle feature control systems and methods based on smoking |
| DE102020210878A1 (de) * | 2020-08-28 | 2022-03-03 | Volkswagen Aktiengesellschaft | Verfahren zur Dynamikdiagnose eines Sensors im Frischluft- oder Abgastrakt von Brennkraftmaschinen |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1972233U (de) | 1967-07-28 | 1967-11-09 | Burger Eisenwerke Ag | Heizkessel mit brauchwasserbereiter. |
| JPH08177575A (ja) | 1994-12-28 | 1996-07-09 | Nippondenso Co Ltd | 内燃機関の空燃比制御装置の自己診断装置 |
| DE19722334B4 (de) | 1997-05-28 | 2011-01-05 | Robert Bosch Gmbh | Abgassondendiagnoseverfahren und -vorrichtung |
| DE19936355A1 (de) * | 1999-08-03 | 2001-02-08 | Volkswagen Ag | Verfahren zur Plausibilitätsprüfung von Motorgrößen und Sensorgrößen unter Verwendung einer stetigen Lambda-Sonde |
| JP4320778B2 (ja) * | 2004-08-23 | 2009-08-26 | 株式会社デンソー | 空燃比センサの異常診断装置 |
| DE102006041477A1 (de) | 2006-09-05 | 2008-03-06 | Robert Bosch Gmbh | Verfahren zur Dynamik-Diagnose einer Abgas-Sonde |
| DE102008006631A1 (de) * | 2008-01-29 | 2009-07-30 | Volkswagen Ag | Verfahren zur Diagnose eines Sauerstoffsensors sowie ein Verfahren zur Korrektur einer Diagnose eines Katalysators |
| DE102008001121A1 (de) * | 2008-04-10 | 2009-10-15 | Robert Bosch Gmbh | Verfahren zur Diagnose einer im Abgassystem einer Brennkraftmaschine angeordneten Abgassonde und Vorrichtung zur Durchführung des Verfahrens |
| JP4835704B2 (ja) * | 2009-02-23 | 2011-12-14 | トヨタ自動車株式会社 | 酸素センサの異常判定装置 |
| US8145409B2 (en) * | 2009-03-26 | 2012-03-27 | Ford Global Technologies, Llc | Approach for determining exhaust gas sensor degradation |
-
2009
- 2009-08-10 DE DE102009028367A patent/DE102009028367A1/de not_active Withdrawn
-
2010
- 2010-07-22 US US13/389,760 patent/US8646324B2/en active Active
- 2010-07-22 CN CN201080035240.5A patent/CN102472186B/zh active Active
- 2010-07-22 WO PCT/EP2010/060634 patent/WO2011018317A1/de not_active Ceased
- 2010-07-22 EP EP10737862.2A patent/EP2464849B1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2011018317A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011018317A1 (de) | 2011-02-17 |
| EP2464849B1 (de) | 2020-04-01 |
| CN102472186A (zh) | 2012-05-23 |
| DE102009028367A1 (de) | 2011-02-17 |
| US8646324B2 (en) | 2014-02-11 |
| US20120222474A1 (en) | 2012-09-06 |
| CN102472186B (zh) | 2015-06-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2464849B1 (de) | Verfahren und vorrichtung zur dynamik-diagnose einer abgas-sonde | |
| DE102008042549B4 (de) | Verfahren und Vorrichtung zur Diagnose einer Abgassonde | |
| DE102007005680B3 (de) | Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine | |
| DE102011085115B4 (de) | Verfahren und Vorrichtung zur Adaption einer Lambdaregelung | |
| DE102008001569B4 (de) | Verfahren und Vorrichtung zur Adaption eines Dynamikmodells einer Abgassonde | |
| DE102012211687B4 (de) | Verfahren und Steuereinheit zur Erkennung eines Spannungsoffsets einer Spannungs-Lambda-Kennlinie | |
| EP2812551B1 (de) | Verfahren zur dynamiküberwachung von gas-sensoren | |
| DE102011088296A1 (de) | Verfahren und Vorrichtung zur Dynamiküberwachung von Gas-Sensoren | |
| WO2005083250A1 (de) | Verfahren zur ermittlung der aktuellen sauerstoffbeladung eines 3-wege-katalysators einer lambdageregelten brennkraftmaschine | |
| EP2850304A1 (de) | Verfahren und steuereinheit zur kompensation eines spannungsoffsets einer zweipunkt-lambdasonde | |
| DE19819461B4 (de) | Verfahren zur Abgasreinigung mit Trimmregelung | |
| DE102009045376A1 (de) | Verfahren und Vorrichtung zur Diagnose der Dynamik eines Abgassensors | |
| DE102009054935B4 (de) | Verfahren und Vorrichtung zur Diagnose der Dynamik eines Abgassensors | |
| DE102011121099B4 (de) | Verfahren zum Betreiben einer Abgasreinigungseinrichtung sowie entsprechende Abgasreinigunseinrichtung | |
| DE102005045888B3 (de) | Vorrichtung zum Betreiben einer Brennkraftmaschine | |
| DE102012200032A1 (de) | Verfahren und Vorrichtung zur Dynamik-Diagnose von Sensoren | |
| DE102013200573A1 (de) | Verfahren und Vorrichtung zur aktiven Diagnose von Komponenten einer Abgasreinigungsanlage einer Brennkraftmaschine | |
| WO2013029878A1 (de) | Verfahren und vorrichtung zur dynamik-diagnose einer abgassonde | |
| EP1960642B1 (de) | Verfahren zur diagnose eines in einem abgasbereich einer brennkraftmaschine angeordneten katalysators und vorrichtung zur durchführung des verfahrens | |
| DE102006022383B4 (de) | Verfahren zur Signalauswertung eines Partikelsensors | |
| DE102019118471B3 (de) | Verfahren zum Betreiben einer Antriebseinrichtung und eine Antriebseinrichtung für ein Kraftfahrzeug | |
| DE102012207639A1 (de) | Verfahren und Vorrichtung zur Dynamik-Diagnose einer Abgassonde | |
| DE102005062116A1 (de) | Verfahren zur Überwachung eines Abgasnachbehandlungssystems | |
| EP1730391A1 (de) | Verfahren und vorrichtung zum steuern einer brennkraftmaschine | |
| DE102022211614B3 (de) | Verfahren zum Betreiben einer Antriebseinrichtung für ein Kraftfahrzeug sowie entsprechende Antriebseinrichtung |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20120312 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
|
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
| 17Q | First examination report despatched |
Effective date: 20180627 |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
| INTG | Intention to grant announced |
Effective date: 20191218 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP Ref country code: AT Ref legal event code: REF Ref document number: 1251638 Country of ref document: AT Kind code of ref document: T Effective date: 20200415 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502010016560 Country of ref document: DE |
|
| RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: ROBERT BOSCH GMBH |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200701 |
|
| REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20200401 |
|
| REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200401 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200817 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200401 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200401 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200702 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200701 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200801 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200401 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20200724 Year of fee payment: 11 Ref country code: FR Payment date: 20200727 Year of fee payment: 11 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200401 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200401 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20200729 Year of fee payment: 11 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200401 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502010016560 Country of ref document: DE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200401 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200401 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200401 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200401 Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200401 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200401 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200401 Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200401 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200401 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| 26N | No opposition filed |
Effective date: 20210112 |
|
| REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20200731 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200722 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200731 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200731 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200731 Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200401 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200722 |
|
| REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 1251638 Country of ref document: AT Kind code of ref document: T Effective date: 20200722 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200722 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20210722 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20210722 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200401 Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200401 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20210731 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200401 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200401 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20210722 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20240919 Year of fee payment: 15 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R084 Ref document number: 502010016560 Country of ref document: DE |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502010016560 Country of ref document: DE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20260203 |