CN106471238A - Method for analyzing and processing characteristic deviation - Google Patents
Method for analyzing and processing characteristic deviation Download PDFInfo
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- CN106471238A CN106471238A CN201580030958.8A CN201580030958A CN106471238A CN 106471238 A CN106471238 A CN 106471238A CN 201580030958 A CN201580030958 A CN 201580030958A CN 106471238 A CN106471238 A CN 106471238A
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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
- F02D41/14—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
-
- 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
- F02D41/1455—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 sensor resistivity varying with oxygen 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
- F02D41/02—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
- F02D41/24—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
-
- 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
- F02D41/2454—Learning of the air-fuel ratio 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
- F02D41/24—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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The present invention relates to the method and apparatus being arranged at least one region characteristic of Abgassensor in engine exhaust gas passage and the deviation (18) of at least one reference value for analyzing and processing.The method being derived from the robust for reliable harmful substance optimization is carried out with characteristic curve correction：In order to evaluate described deviation (18), at least one threshold previously given, this threshold constitutes the criterion for the difference between tolerable correction demand and intolerable correction demand.
Description
Technical field
The present invention relates to a kind of characteristic of the Abgassensor being arranged in for analyzing and processing in engine exhaust gas passage is bent
At least one region of line and the method for the deviation of at least one reference value.
Additionally, the present invention relates to the characteristic of the Abgassensor being arranged in for analyzing and processing in engine exhaust gas passage is bent
At least one region of line and the equipment of the deviation of reference value, wherein, are provided with control device, and wherein, in described control
It is provided with program circuit or conversing circuits (Schaltkreis) in device.
Background technology
In order to optimize the discharge of poisonous waste in current internal combustion engine, it is used for adjusting combustion process using Abgassensor and gives up
Gas post processing, such as such as two point form lambda seeker and/or broadband lambda seeker and/or NOxSensor.Described optimization is it is assumed that pass through
Measurand reliably and accurately asked for by sensor.Here, a crucial factor is the variable of physical measurement and to be asked for
The mutual relation of the univocality between measurand, this mutual relation is generally existed by characteristic curve.For example drawn due to aging
Rising, characteristic curve with respect to may lead to the discharge of poisonous waste that improves many times with reference to characteristic movement.
This is particularly suited for two point form lambda seeker, also referred to as saltatory detector or this special detector of energy, when they will
When being used in lasting λ regulation.Its voltage-λ characteristic curve (being referred to as λ characteristic curve below briefly) is in grease zone and few oil
There is in transition (λ=1) between the region of fat jump and level land extends relatively in other regions.Therefore, two point form λ visits
Survey device generally contains the waste gas (λ more than oils and fatss with excess of fuel substantially when internal combustion engine is run<1) and when being run with excess air
Waste gas (the λ of few oils and fatss>1) make a distinction between.However, due to the characteristic linearisation of λ, by means of ratio broadband lambda seeker
The cheap two point form lambda seeker of cost also at least can carry out lasting λ in restricted λ region before catalyst converter and adjust
Section.Due to the trend that characteristic curve is flat on the right, this supposes good with reference to λ characteristic curve in the whole service life of detector
Consistent well.Otherwise, the accuracy of regulation is not enough and is likely to occur unreliablely high discharge.
This supposition is generally unsatisfactory for.Instead, actual λ characteristic curve can be due to the effect of multiple superpositions
Move with respect to reference to λ characteristic curve.Therefore, the two point form lambda seeker before catalyst converter is in most cases adjusted with two point form
The mode of section uses, and wherein, is adjusted to λ=1.But, this has the disadvantage in that, some operational modes (few oils and fatss and contain oils and fatss
Many air-fuel mixtures are requisite for described operational mode, such as catalyst converter diagnosed or component protection)
Under, it is merely capable of arranging with controlling in advance but target λ can not be adjusted.
From the method for identifying deviation a kind of known to DE 10 2,010 211 687 A1, and from DE 10 2012
Known to 211 683 A1 a kind of for being arranged in engine exhaust gas passage two with respect to corresponding with reference to λ characteristic curve correction
The characteristic method of λ of point type lambda seeker.There especially illustrate, can identify and compensate the two point form before catalyst converter
The actual λ characteristic curve of detector with reference to λ characteristic permanent character curve offset or the deviation that determined by temperature.Cause
This, can carry out lasting λ and adjust with two point form lambda seeker.
No doubt it may occur however that, ask for unbelievably high correction demand, described correction demand for example implies defective
Detector or other functional fault.If executing correction in this case, this may result in delay to institute excellent
The reliable adjustment made every effort to of the discharge of poisonous waste changed.
Content of the invention
Therefore, the present invention, based on such task, provides a kind of method for revising characteristic robust, with
Guarantee reliable harmful substance optimization, and a kind of equipment for executing such method is provided.
The task of being related to this method of the present invention thus solves：In order to evaluate deviation, at least one threshold previously given, should
Threshold constitutes the criterion for the difference between tolerable correction demand and intolerable correction demand.This criterion
Using allow differentiated reaction is caused by different measures.Here, at least one threshold described may be located at described at least
More than one reference value and/or following.At least one threshold described can also utterly or be relatively described.
It is proved to particularly advantageously, Abgassensor is lambda seeker, especially two point form lambda seeker, described characteristic curve
For λ characteristic curve, and, from drawing reference value with reference to λ characteristic curve.According to the present invention, with regard to lambda seeker, especially 2 points
The use of the method for formula lambda seeker allows reliably to be used for engine combustion process carried out discharging using such detector excellent
The regulation changed.
When using having two point form lambda seeker, the method according to the invention, in accordance with purpose, in order to ask for partially
Difference, a value on reference to λ characteristic curve, changes the group of the air/fuel mixture of supply internal combustion engine towards λ=1
Become composition, and, be inferred to the actual value of λ from the change of the constituent of air/fuel mixture.Here, can quickly and
Identify for example being determined by tolerance, being determined by temperature and deviation by aging decision or such by least two exactly
The deviation that the superposition of effect causes.The dynamic action that may make identification error can be compensated simultaneously.In addition it is also considered that its
Its method, methods described is used for asking for the actual value of λ and it can therefore be concluded that the deviation that goes out between actual value and reference value,
For example in the heating power including lambda seeker and/or the other, method especially in the case of resistance-temperature characteristic curve.This
The method of sample can have other advantages, for example methods described can partly with λ characteristic curve (here, described λ characteristic
Curve is referred to as voltage λ characteristic curve) independently execute.Can be in multiple times using the group of selected method or multiple method
Close, and ask for described deviation respectively and/or ask for described deviation by one or more meansigma methods.Institute can be made in this way
State credible result.
Also advantageously, when revising λ=1 and after reference λ characteristic characteristic curve deviation, determine and with reference to λ
The deviation of at least one reference value characteristic.Therefore, the effect based on the additional movement causing in abscissa, can exclude
Deviation determine in mistake, this make deviation analyzing and processing more reliable.
When at least one threshold makes credibility region with respect to area limit outside credibility region, can simplifiedly divide
Analysis processes deviation.
For deviation simplification analyzing and processing also advantageously, neatly determine at least one threshold described and then credibility
Region.For example, determination corresponding with the tolerance of faultless Abgassensor is meaningful.
Meet purpose, relatively described deviation and threshold value, wherein, deviation is evaluated as tolerable within credibility region
Correction demand, and deviation is evaluated as intolerable correction demand outside credibility region.To have in the present case
For sharply using in different reactions, which reaction should select, this assessment can be used as a part for determination procedure
Consider.In the case that deviation is outside credibility region, exist from the functional fault of especially Abgassensor, Abgassensor
Electrical wiring in affiliated controller or set out for running the controller software of Abgassensor, thus different from deviation
The reaction of correction completely may be meaningful.
The reaction matching with demand situation can be achieved in：Carry out deviation in the case of correction demand is tolerable
Revise, and, the other reaction of triggering in the case of determination correction demand is intolerable.By revising the tolerable feelings of demand
Deviation is revised it can be ensured that the required accuracy of Abgassensor under condition.Advantageously, this correction passes through to eliminate deviation
The reason carry out, such as such as explanation in DE 10 2,012 211 683 A1 that introductory song is previously mentioned.Can not hold in correction demand
Other reactions in the case of bearing are favorably improved the robustness for Fault Identification and compensation of whole method.Therefore, with it
Say there is positive role not equal to have negative influence, insignificant correction measure can be stopped and accordingly more be had a mind to
The measure of justice replaces.The correction measure that can not execute in its necessary region can also be by other substituted in reaction.
In a kind of preferred modification of methods described, setting, react according to triggering other the reason being diagnosed.Especially
When temperature drift identification shows that the temperature of two point form lambda seeker is substantially supercool, or the identification of described temperature drift shows two point form λ
The temperature of detector is substantially too high, or identifies unbelievably high positive variation, or identifies unbelievably high
Negative variation when, the described other reactions of triggering.In this case, other reactions are especially interesting, because
May cannot execute necessary correction, but or be existed with high probability and other known not directly revise
Deviating cause.In the case that detector temperature is obviously too low or too high, such as correction measure, detector element temperature
Must unbelievably improve, in this regard, thermal power perhaps not available described in other words thermal power must decline, this may is that not
Possible.For example when temperature must change with respect to the nominal temperature (possibly such as 730 DEG C of described nominal temperature) of detector
More than -50K to+0K, during revising striked deviation, intolerable correction demand occurs.For variation, for example
When variation is for example more than ± 15mV, there is intolerable correction demand.Unbelievably high positive variation
For example may imply that the branch road between detector signal wire and cell voltage, incredible negative variation for example implies
The pollution of the oxygen reference of detector.
Advantageously, other reactions include at least one in following measures：
- correction of deviation is limited to described threshold value,
- correction is limited to substitution value,
- discernible the status information of deviation that is provided for making outside credibility region,
- be registered in the error memory in control device.
Functional fault, the Abgassensor for example causing due to superheated should be avoided by correction is limited to threshold value
Damage.Particularly with following situation setting, correction is limited to substitution value：Completely correction is impossible and is modified to
Threshold value can cover the deviation outside credibility region, particularly with other diagnosis units, thus Abgassensor for example can not
It is shown as defective, although what this was likely necessary.Here, substitution value may also mean that, it is not modified.Alternatively
Or in addition to revising, can arrange, status information is set, described status information makes the limited function of Abgassensor can
Identification.By being registered in the error memory of controller, can for example make λ regulation inoperative and be transformed into λ to control in advance
System, thus avoid the excessively high discharge because intolerable deviation causes or the fuel consumption improving.
Particular for destination, it is possible to use the method according to the invention, outside credibility region is located at according to deviation
How far to trigger during different other reaction and/or when according to from credibility region difference out the reason and trigger different its
When it reacts.
Draw when using two point form lambda seeker and preferably use region, described two point form lambda seeker be located at catalyst converter it
Front or afterwards.Therefore, the method according to the invention can be employed flexibly for the two point form lambda seeker differently positioning and not
It is limited to the detector infield determining.
The task of being related to equipment of the present invention thus solves, in program circuit or in conversing circuits previously given extremely
Striked deviation is compared in described comparison scale by a few reference value and comparison scale with least one reference value, and
And, the correction that control device according to comparative result or carries out deviation or triggering other are reacted.
Described equipment meet purpose using field be, when Abgassensor be lambda seeker, especially two point form λ detect
During device, characteristic curve is λ characteristic curve, and reference value is made up of the reference λ characteristic curve being stored, and with reference value
Revised before relatively during λ=1 with respect to reference to λ characteristic characteristic curve deviation.This is detected using λ reliablely
Device, especially two point form lambda seeker are used for the regulation of the Emission Optimization to combustion process.
Brief description
Referring to the embodiment present invention explained in detail shown in the accompanying drawings.Accompanying drawing illustrates：
Voltage-λ the curve chart of Fig. 1 two point form lambda seeker
Specific embodiment
Fig. 1 illustrates voltage-λ curve Figure 10 of two point form lambda seeker, and it has voltage axis 11 and λ axle 12.For newly dispatching from the factory
The two point form lambda seeker (not having tolerance) at the standard conditions, measured voltage 170 and corresponding air coefficient λ it
Between mutual relation univocality ground determined by reference to λ characteristic curve 15.With reference to λ characteristic curve 15, there is grease zone 13 (λ<1)
With few grease zone 14 (λ>1) change of almost saltatory in change curve, in-between, is drawn when λ=1.Measured
Voltage 170 at, be inferred to reference to λ 171 by means of the reference λ characteristic curve 15 being adopted.
In addition to reference to λ characteristic curve 15, figure 1 illustrates λ characteristic curve 16, this λ characteristic curve is in grease zone
Move up with respect to reference to λ characteristic curve 15 in 13.Such movement is because of such as tolerance, aging or temperature effects
Or the superposition due to multiple effects and occur.In the event of such movement (described movement is not corrected), then voltage 170 is real
The λ 172 of reality is equivalent on border rather than with reference to λ 171, described reference λ differs deviation 18 with actual λ.
By method according to the invention it is possible to be assessed by comparing with least one threshold, whether deviation 18 is located at can
Within reliability region.Then, meaningfully, preferably revise described deviation by eliminating reason.Because such as detector
The tolerance of electrical wiring may lead to the systematic offset in the region (13,14) of grease zone and few oils and fatss with corresponding deviation,
And because vicious detector temperature generally different deviations in the region (13,14) of grease zone and few oils and fatss.Allusion quotation
Type ground, described deviation is about 1/6 of the movement in grease zone 13 in few grease zone 14, thus by skew only
Movement does not enable complete correction.
In the case of in mobile not tolerable, outside credibility region, then, meaningfully promote other reaction, especially
It is described as favourable, single or suitable combination before it.In the situation considering tolerably not high correction demand
Under, the identification to exhaust gas probe mistake allows, and identifies corresponding mistake more quickly and with having improved differentiation acuity.
A kind of method of the robust for characteristic curve correction can be provided in this way, and provide a kind of for executing methods described
Equipment, to provide reliable harmful substance to be optimized for using.
Claims (14)
1. it is used at least one region characteristic that analyzing and processing is arranged in the Abgassensor in engine exhaust gas passage
With respect to the method for the deviation (18) of at least one reference value,
It is characterized in that,
In order to evaluate described deviation (18), at least one threshold previously given, this threshold is constituted for tolerable correction demand and not
The criterion of the difference between tolerable correction demand.
2. method according to claim 1,
It is characterized in that,
Described Abgassensor is lambda seeker, especially two point form lambda seeker, and described characteristic curve is λ characteristic curve (16), and
And, draw at least one reference value described from reference λ characteristic curve (15).
3. method according to claim 2,
It is characterized in that,
In order to ask for described deviation (18), one on reference to λ characteristic curve is worth to, carries out supplying described internal combustion engine
The constituent of air/fuel mixture is towards the change of λ=1, and, the constituent from described air/fuel mixture
Change be inferred to the actual value of λ.
4. the method according to claim 2 and 3,
It is characterized in that,
When have modified λ=1 and after the described characteristic curve deviation with reference to λ characteristic curve (15), by described bent with reference to λ characteristic
At least one reference value of line (15) determines described deviation (18).
5. the method according to any one of the preceding claims is it is characterised in that at least one Yu Shi credibility area described
Domain is with respect to the area limit outside described credibility region.
6. the method according to any one of the preceding claims is it is characterised in that neatly determine at least one threshold described
And then described credibility region.
7. the method according to any one of the preceding claims is it is characterised in that deviation described in comparison (18) and described threshold,
Wherein, deviation (18) is assessed as tolerable correction demand within described credibility region, and deviation (18) is described
It is assessed as intolerable correction demand outside credibility region.
8. the method according to any one of the preceding claims it is characterised in that revise demand tolerable in the case of
Carry out the correction of described deviation (18), and, the other reaction of triggering when determining intolerable correction demand.
9. when claim 8 quotes claim 2 to 7 method according to claim 8 it is characterised in that especially when
The identification of-temperature drift shows that the temperature of described two point form lambda seeker is substantially too cold, or
The identification of-temperature drift shows that the temperature of described two point form lambda seeker is substantially too high, or
- recognize unbelievably high, positive variation, or
- when recognizing unbelievably high, negative variation,
The described other reactions of triggering.
10. method according to claim 8 or claim 9 is it is characterised in that described other reaction is included at least one in following measures
?
- correction of described deviation (18) is limited to described threshold value,
- described correction is limited to substitution value,
- discernible the status information of deviation (18) that is provided for making outside described credibility region,
- register in the error memory in control device.
11. methods according to claim 10 are it is characterised in that be located at described credibility region according to described deviation (18)
Outside how far to trigger different other reactions, and/or, according to from described credibility region large deviations (18) out the reason
The different other reactions of triggering.
12. methods according to any one of the preceding claims it is characterised in that using two point form lambda seeker, described two
Before or after point type lambda seeker is located at catalyst converter.
13. are used at least one region characteristic that analyzing and processing is arranged in the Abgassensor in engine exhaust gas passage
With the equipment of the deviation (18) of at least one reference value, wherein, control device is set, and, wherein, in described control device
One program circuit of setting or conversing circuits are it is characterised in that in described program flow process or in described conversing circuits
At least one reference value previously given and comparison scale, in described comparison scale by striked deviation (18) with described at least
One reference value compares, and, the described control device correction that according to comparative result or carries out described deviation (18) or touch
Send out other reactions.
14. equipment according to claim 13 are it is characterised in that described Abgassensor is lambda seeker, especially two point form
Lambda seeker, described characteristic curve is λ characteristic curve (16), and, described reference value is by the reference λ characteristic curve being stored
(15) constitute, and, with respect to described reference λ characteristic curve (15) when having revised λ=1 before comparing with described reference value
Characteristic curve deviation.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014211069.6 | 2014-06-11 | ||
| DE102014211069.6A DE102014211069A1 (en) | 2014-06-11 | 2014-06-11 | Method for evaluating the deviation of a characteristic |
| PCT/EP2015/061962 WO2015189052A1 (en) | 2014-06-11 | 2015-05-29 | Method for analysing the deviation from a characteristic plot |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106471238A true CN106471238A (en) | 2017-03-01 |
| CN106471238B CN106471238B (en) | 2020-09-22 |
Family
ID=53276130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580030958.8A Active CN106471238B (en) | 2014-06-11 | 2015-05-29 | Method for evaluating deviations of a processing characteristic |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3155251B1 (en) |
| CN (1) | CN106471238B (en) |
| DE (1) | DE102014211069A1 (en) |
| WO (1) | WO2015189052A1 (en) |
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| DE3840148A1 (en) * | 1988-11-29 | 1990-05-31 | Bosch Gmbh Robert | METHOD AND DEVICE FOR DETECTING AN ERROR STATE OF A LAMB PROBE |
| DE4122828C2 (en) * | 1990-07-10 | 1996-07-25 | Mitsubishi Motors Corp | Air-fuel ratio control device for an internal combustion engine in a motor vehicle |
| DE4243493A1 (en) * | 1992-12-22 | 1994-06-23 | Bosch Gmbh Robert | Method and device for monitoring a control device |
| DE10258426B4 (en) * | 2002-12-13 | 2008-08-21 | Siemens Ag | Method and device for monitoring a control device of an internal combustion engine |
| DE102012221552A1 (en) * | 2012-11-26 | 2014-05-28 | Robert Bosch Gmbh | Method for operating exhaust gas sensor for determining composition of exhaust gas of internal combustion engine, involves activating different functions of exhaust gas sensor depending on operating state of exhaust gas sensor |
-
2014
- 2014-06-11 DE DE102014211069.6A patent/DE102014211069A1/en not_active Withdrawn
-
2015
- 2015-05-29 WO PCT/EP2015/061962 patent/WO2015189052A1/en active Application Filing
- 2015-05-29 CN CN201580030958.8A patent/CN106471238B/en active Active
- 2015-05-29 EP EP15726131.4A patent/EP3155251B1/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62175657A (en) * | 1986-01-30 | 1987-08-01 | Fujikura Ltd | Method of measuring gas concentration |
| CN1957230A (en) * | 2004-05-21 | 2007-05-02 | 克诺尔商用车制动系统有限公司 | Error correction method for displacement transducer signal |
| EP2622337A1 (en) * | 2010-09-29 | 2013-08-07 | Robert Bosch GmbH | Method for calibrating, validating and aligning a lambda probe |
| CN103249933A (en) * | 2010-12-15 | 2013-08-14 | 罗伯特·博世有限公司 | Method for controlling and adapting an air/fuel mixture in an internal combustion engine |
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| CN103527288A (en) * | 2012-07-05 | 2014-01-22 | 罗伯特·博世有限公司 | Method and device for correcting a characteristic curve of a two-step lambda oxygen sensor |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3155251B1 (en) | 2020-11-25 |
| WO2015189052A1 (en) | 2015-12-17 |
| EP3155251A1 (en) | 2017-04-19 |
| DE102014211069A1 (en) | 2015-12-17 |
| CN106471238B (en) | 2020-09-22 |
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