CN103759907B - A kind of EGR circuit failure detection method - Google Patents
A kind of EGR circuit failure detection method Download PDFInfo
- Publication number
- CN103759907B CN103759907B CN201410032636.4A CN201410032636A CN103759907B CN 103759907 B CN103759907 B CN 103759907B CN 201410032636 A CN201410032636 A CN 201410032636A CN 103759907 B CN103759907 B CN 103759907B
- Authority
- CN
- China
- Prior art keywords
- egr
- relation
- wave amplitude
- graph
- fault
- 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.)
- Active
Links
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The invention provides a kind of EGR circuit failure detection method, comprise: in the time of the non-fault of EGR pipeline, obtain in advance the first wave amplitude graph of a relation, comprise step: change in the process of controlling the force value of simultaneously obtaining by the pressure sensor of being located at before turbocharger in the aperture that EGR valve is set; Obtaining aperture, to change the aperture amplitude of variation of EGR valve and the corresponding relation figure of described force value amplitude of variation described in the process of controlling be the first wave amplitude graph of a relation; In the time carrying out the detection of EGR circuit failure, obtain the second wave amplitude graph of a relation; According to the comparative result of the first wave amplitude graph of a relation and the second wave amplitude graph of a relation, judge whether fault of EGR pipeline. In the embodiment of the present invention, do not need to be provided with intake flow sensor and just can realize the fault detect of EGR pipeline, so effectively reduce the holistic cost of EGR engine.
Description
Technical field
The present invention relates to engine art, in particular, relate to a kind of EGR circuit failure detection sideMethod.
Background technology
Exhaust gas recirculatioon (ExhaustGasRecirculation, EGR) is that mean engine will be arranged after burningA part that goes out gas imports suction side makes its air-breathing technology once again. Its main purpose is to reduce rowWhen going out the nitrogen oxide (NOx) in gas and sharing sub-load, can improve rate of fuel consumption rate.
For EGR engine, need to carry out corresponding detection to the fault of egr system and ensureThe security of engine operation. Wherein, the fault diagnosis of EGR valve itself can pass by EGR valve selfSensor carries out electric fault and judges clamping stagnation or electrical damage; In addition, also need the gas leakage to EGR pipelineOr block and judge; To this, mode of the prior art is to adopt intake flow sensor to enteringThroughput detects, and judges EGR pipeline thereby can whether exceed default detected value according to charge flow rateWhether existence is leaked gas or blocks.
Inventor through research find, the mode that detects EGR pipeline in prior art must need to be provided with intoThroughput sensor could be realized, and intake flow sensor is not necessity in some EGR engineParts, therefore intake flow sensor the holistic cost that has improved EGR engine is set.
Summary of the invention
In view of this, the invention provides EGR circuit failure detection method, send out to realize reduction EGRThe object of the holistic cost of motivation.
For achieving the above object, the invention provides following technical scheme:
A kind of EGR circuit failure detection method, comprising:
In the time of the non-fault of EGR pipeline, obtain in advance the first wave amplitude graph of a relation, comprise step:
Change in the process of controlling, simultaneously by being located at turbocharging in the aperture that EGR valve is setThe force value that pressure sensor before device obtains;
Obtain aperture amplitude of variation and described pressure that described aperture changes EGR valve described in the process of controllingThe corresponding relation figure of value amplitude of variation, described graph of a relation is described the first wave amplitude graph of a relation;
In the time carrying out the detection of EGR circuit failure, comprise step:
Change in the process of controlling, simultaneously by being located at turbocharging in the aperture that EGR valve is setThe force value that pressure sensor before device obtains;
Obtain aperture amplitude of variation and described pressure that described aperture changes EGR valve described in the process of controllingThe corresponding relation figure of value amplitude of variation, described graph of a relation is described the second wave amplitude graph of a relation;
According to the comparative result of described the first wave amplitude graph of a relation and the second wave amplitude graph of a relation, judge described EGRWhether fault of pipeline.
Preferably, in embodiments of the present invention, the described first wave that obtains in advance in the time of the non-fault of EGR pipelineWidth graph of a relation, carries out the detection of EGR circuit failure with described, all in same steady working condition.
Preferably, in embodiments of the present invention, the described aperture that EGR valve is set changes to be controlled,Comprise:
The angle value of described EGR valve open angle is periodically fluctuateed.
Preferably, in embodiments of the present invention, described periodic fluctuation, comprising:
The square wave of setpoint frequency or sine wave.
Preferably, in embodiments of the present invention, the described angle variation that EGR valve is set is controlledProcess, comprising:
Release conditions discharges, and described periodic fluctuation superposition is exported in aperture to closed-loop control.
Preferably, in embodiments of the present invention, described according to described the first wave amplitude graph of a relation and the second wave amplitudeThe comparative result of graph of a relation, judges whether fault of described EGR pipeline, comprising:
In the time that the difference of described the first wave amplitude graph of a relation and the second wave amplitude graph of a relation belongs to pre-set interval value, sentenceFixed described EGR pipeline is non-fault.
Preferably, in embodiments of the present invention, described according to described the first wave amplitude graph of a relation and the second wave amplitudeThe comparative result of graph of a relation, judges whether fault of described EGR pipeline, also comprises:
When the difference of described the first wave amplitude graph of a relation and the second wave amplitude graph of a relation is less than described pre-set interval valueWhen minimum of a value, judge that described EGR pipeline is principal fault.
Preferably, in embodiments of the present invention, described according to described the first wave amplitude graph of a relation and the second wave amplitudeThe comparative result of graph of a relation, judges whether fault of described EGR pipeline, also comprises:
When the difference of described the first wave amplitude graph of a relation and the second wave amplitude graph of a relation is greater than described pre-set interval valueWhen maximum, judge that described EGR pipeline is plugging fault. .
Known via above-mentioned technical scheme, the embodiment of the present invention has utilized the pressure before turbocharger to passSensor, in the time of the non-fault of EGR pipeline, is changed and is controlled by the angle that EGR valve is set in advance,Obtain the variation wave amplitude of the measured force value of corresponding pressure sensor, thereby just obtain EGR pipelineChang Shi, what EGR valve entered angle variance values and pressure sensor records the corresponding of pressure amplitude valueRelation, and then can be in the time detecting, by again obtaining, EGR valve enters angle variance values and pressure passesWhether the pressure that the corresponding relation that records pressure amplitude value of sensor carrys out verification EGR pipeline is normal, entersAnd judge whether EGR pipeline exists gas leakage or stop up.
In the embodiment of the present invention, do not need to be provided with intake flow sensor and just can realize EGR pipelineFault detect, so effectively reduce the holistic cost of EGR engine.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will be to realityThe accompanying drawing of executing required use in example or description of the Prior Art is briefly described, apparently, belowAccompanying drawing in description is only embodiments of the invention, for those of ordinary skill in the art, notPay under the prerequisite of creative work, other accompanying drawing can also be provided according to the accompanying drawing providing.
Fig. 1 is the step schematic diagram of the detection method of EGR circuit failure described in the embodiment of the present invention;
Fig. 2 is the structural representation of EGR engine described in the embodiment of the present invention;
Fig. 3 judges the whether logical schematic of fault of EGR pipeline described in the embodiment of the present invention;
Fig. 4 judges the whether another logical schematic of fault of EGR pipeline described in the embodiment of the present invention;
Fig. 5 is the logical schematic that EGR circuit failure described in the embodiment of the present invention detects.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried outDescribe clearly and completely, obviously, described embodiment is only the present invention's part embodiment, andNot whole embodiment. Based on the embodiment in the present invention, those of ordinary skill in the art are not doingGo out the every other embodiment obtaining under creative work prerequisite, all belong to the scope of protection of the invention.
The invention provides a kind of fault detection method, as shown in Figure 1, comprise step:
In the time of the non-fault of EGR pipeline, obtain in advance the first wave amplitude graph of a relation, comprising:
S11, change in the process of controlling, simultaneously by being located at whirlpool in aperture that EGR valve is setThe force value that pressure sensor before wheel booster obtains;
With reference to figure 2, in embodiments of the present invention, inventor has utilized in the EGR pipeline of EGR engineBe located at the pressure sensor 02 before turbocharger; Concrete thought is: under steady working condition, and EGR valve 01The variation of the aperture of entering can make the pressure before turbocharger produce corresponding variation, before turbochargerThe obtaining of the force value that can obtain by pressure sensor 02 herein of the situation of change of pressure.Inventor finds, in the situation that steady working condition is approximate, particularly, under same steady working condition, works as EGRWhen pipeline is non-fault, the aperture of EGR valve 01 is carried out the variation of certain amplitude, can make to be located at turbine and increaseThe force value that pressure sensor 02 before depressor obtains is also carried out the variation of corresponding amplitude thereupon; And work asWhen EGR pipeline blockage or gas leakage, if or the aperture of EGR valve 01 is carried out to the change of original amplitudeChange, the amplitude of variation of being now located at the force value that the pressure sensor 02 before turbocharger obtains willThere is larger difference with original amplitude of variation.
Such as, if EGR pipeline blockage is now carried out the aperture of EGR valve the variation of original amplitude,Now be located at the amplitude of variation of the force value that the pressure sensor before turbocharger obtains just than originalAmplitude of variation is much larger. In addition, if the gas leakage of EGR pipeline is now undertaken former by the aperture of EGR valveThere is the variation of amplitude, be now located at the variation of the force value that the pressure sensor before turbocharger obtainsAmplitude is just little a lot of than original amplitude of variation.
During for definite non-fault of EGR pipeline, when the aperture of EGR valve is carried out the variation of certain amplitude, establishThe range value of the force value respective change of the pressure sensor before turbocharger, first need to be rightThe aperture that EGR valve is set changes in the process of controlling, simultaneously by being located at the pressure before turbochargerThe force value that power sensor obtains.
In actual applications, in order to obtain the first wave amplitude graph of a relation more stable, that have more reference value,When the aperture of setting at control EGR valve changes, can make the angle value of EGR valve open angle enterThe fluctuation of line period, because the trough of every secondary undulation and the value of crest are all identical, thereby can controlThe amplitude that EGR valve processed carries out repeatedly aperture variation is all identical, like this, also will make to be located at turbineThe amplitude of variation of the force value that the pressure sensor before booster obtains is more stable. Concrete, thisPeriodic fluctuation in bright embodiment can adopt square wave or the sine wave of setpoint frequency.
S12, the aperture amplitude of variation and the institute that obtain described aperture and change EGR valve described in the process of controllingState the corresponding relation figure of force value amplitude of variation, described graph of a relation is described the first wave amplitude graph of a relation;
Based on above inventive principle, in embodiments of the present invention, in the time of the non-fault of EGR pipeline, obtain in advanceThe first wave amplitude graph of a relation, carry out setting amplitude by the aperture of obtaining the EGR valve under a certain steady state conditionVariation, the corresponding amplitude of variation of the force value obtaining with the pressure sensor before turbochargerThe reference value of corresponding relation figure when as fault detect.
In the time carrying out the detection of EGR circuit failure,
S13, change in the process of controlling, simultaneously by being located at whirlpool in aperture that EGR valve is setThe force value that pressure sensor before wheel booster obtains;
In the time that EGR pipeline is normal, the aperture of the EGR valve obtaining is in an identical manner carried out setting amplitudeVariation, the corresponding amplitude of variation of the force value obtaining with the pressure sensor before turbochargerCorresponding relation figure, should be approximate with the first wave amplitude graph of a relation; If difference is excessive, just can judge EGRPipeline is in malfunction. For this reason, carry out EGR circuit failure detect time, with obtain first wave amplitude closeSystem schemes under identical steady working condition, and S11 is similar with step, and the aperture that EGR valve is set changes controlThe process of system, the force value of simultaneously obtaining by the pressure sensor of being located at before turbocharger.
S14, the aperture amplitude of variation and the institute that obtain described aperture and change EGR valve described in the process of controllingState the corresponding relation figure of force value amplitude of variation, described graph of a relation is described the second wave amplitude graph of a relation;
In acquisition EGR pipeline, after the force value that the pressure sensor before current turbocharger obtains,And then the aperture amplitude of variation that just can obtain current EGR valve and described force value amplitude of variation is correspondingGraph of a relation, that is, and the second wave amplitude graph of a relation.
S15, according to the comparative result of described the first wave amplitude graph of a relation and the second wave amplitude graph of a relation, described in judgementWhether fault of EGR pipeline.
Due to existing the first wave amplitude graph of a relation as a reference, so, obtaining after the second wave amplitude graph of a relation,Just can by the first wave amplitude graph of a relation and the second wave amplitude graph of a relation whether relatively judge EGR pipeline thereforeHinder.
In actual applications, can carry out quantitative judgement by the mode of pre-set interval, that is, and whenWhen the difference of one wave amplitude graph of a relation and the second wave amplitude graph of a relation belongs to pre-set interval value, now first wave is describedThe similarity of width graph of a relation and the second wave amplitude graph of a relation is higher, so can judge that described EGR pipeline is as non-Fault. If when this difference does not belong to pre-set interval value, now the first wave amplitude graph of a relation and Second Wave is describedThe difference of width graph of a relation is excessive, so can judge that described EGR pipeline is fault.
Further, can also further comprise following mode, with further failure judgement reason, toolBody:
On the one hand, as shown in Figure 3, when the difference of described the first wave amplitude graph of a relation and the second wave amplitude graph of a relationWhile being less than the minimum of a value of described pre-set interval value, judge that described EGR pipeline is principal fault. Such as, whenThe first wave amplitude graph of a relation deducts the difference that the second wave amplitude graph of a relation obtains, than the minimum of a value of pre-set interval valueAlso want hour, illustrate EGR valve opening change on turbocharger before the degree of impact of pressure diminish, and changeChange amplitude is excessive, and now EGR pipeline is principal fault.
On the other hand, as shown in Figure 4, poor when described the first wave amplitude graph of a relation and the second wave amplitude graph of a relationWhen value is greater than the maximum of described pre-set interval value, judge that described EGR pipeline is plugging fault. Such as,When the first wave amplitude graph of a relation deducts the difference that the second wave amplitude graph of a relation obtains, than the maximum of pre-set interval valueValue is also wanted when large, illustrate the variation of EGR valve opening on turbocharger before the degree of impact of pressure become greatly, andAmplitude of variation is excessive, and now EGR pipeline is plugging fault.
In actual applications, the EGR circuit failure detection method in the embodiment of the present invention, can be included inThe OBD(On-BoardDiagnostics of EGR engine, mounted automatic diagnosis) detection strategy in,Concrete, in the time that engine normally moves, EGR valve carries out work according to Closed-loop Control Strategy; When carry outWhen OBD detects, release conditions discharges, and this fluctuation superposition is on closed-loop control output aperture, specifically realExisting logic can be as shown in Figure 5.
In the embodiment of the present invention, in engine control strategy, release conditions refers to for engineThe isoparametric scope restriction of rotating speed, oil mass, water temperature, EGR valve opening, when the each parameter of present engineWhen state meets the scope of setting, just can carry out the vibration of EGR valve and carry out OBD measuring ability, byWhether meet the Rule of judgment that the scope of above-mentioned various settings forms, be release conditions.
In sum, in embodiments of the present invention, utilize the pressure sensor before turbocharger,When the non-fault of EGR pipeline, change and control by the angle that EGR valve is set in advance, obtain phaseThe variation wave amplitude of the measured force value of the pressure sensor of answering, thus EGR pipeline obtained when normal, EGRValve enters the corresponding relation that records pressure amplitude value of angle variance values and pressure sensor, and thenCan, in the time detecting, enter recording of angle variance values and pressure sensor by again obtaining EGR valveWhether the pressure that the corresponding relation of pressure amplitude value carrys out verification EGR pipeline is normal, and then judgeWhether EGR pipeline there is gas leakage or stops up. In the embodiment of the present invention, do not need to be provided with charge flow rateSensor just can be realized the fault detect of EGR pipeline, so effectively reduce the whole of EGR engineBody cost.
In this description, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stressesBe and the difference of other embodiment, between each embodiment identical similar part mutually referring to.For the device providing for embodiment, because its method providing with embodiment is corresponding, so describeFairly simple, relevant part illustrates referring to method part.
To the above-mentioned explanation of provided embodiment, professional and technical personnel in the field can be realized or useThe present invention. To be aobvious and easy for those skilled in the art to the multiple amendment of these embodimentSee, General Principle as defined herein can be in the situation that not departing from the spirit or scope of the present invention,Realize in other embodiments. Therefore, the present invention will can not be restricted to these embodiment shown in this article,But to meet the widest scope consistent with principle provided in this article and features of novelty.
Claims (8)
1. an EGR circuit failure detection method, is characterized in that, comprising:
In the time of the non-fault of EGR pipeline, obtain in advance the first wave amplitude graph of a relation, comprise step:
Change in the process of controlling, simultaneously by being located at turbocharging in the aperture that EGR valve is setThe force value that pressure sensor before device obtains;
Obtain aperture amplitude of variation and described pressure that described aperture changes EGR valve described in the process of controllingThe corresponding relation figure of value amplitude of variation, described graph of a relation is described the first wave amplitude graph of a relation;
In the time carrying out the detection of EGR circuit failure, comprise step:
Change in the process of controlling, simultaneously by being located at turbocharging in the aperture that EGR valve is setThe force value that pressure sensor before device obtains;
Obtain aperture amplitude of variation and described pressure that described aperture changes EGR valve described in the process of controllingThe corresponding relation figure of value amplitude of variation, described graph of a relation is the second wave amplitude graph of a relation;
According to the comparative result of described the first wave amplitude graph of a relation and the second wave amplitude graph of a relation, judge described EGRWhether fault of pipeline.
2. according to the circuit failure of EGR described in claim 1 detection method, it is characterized in that, described inIn the time of the non-fault of EGR pipeline, obtain in advance the first wave amplitude graph of a relation, with the described EGR circuit failure that carries outDetect, all in same steady working condition.
3. according to the circuit failure of EGR described in claim 2 detection method, it is characterized in that, described inThe aperture that EGR valve is set changes to be controlled, and comprising:
The angle value of described EGR valve open angle is periodically fluctuateed.
4. according to the circuit failure of EGR described in claim 3 detection method, it is characterized in that, described inPeriodically fluctuation, comprising:
The square wave of setpoint frequency or sine wave.
5. according to the circuit failure of EGR described in claim 4 detection method, it is characterized in that, described inThe angle that EGR valve is set changes the process of controlling, and comprising:
Release conditions discharges, and described periodic fluctuation superposition is exported in aperture to closed-loop control.
6. according to the circuit failure of EGR described in claim 5 detection method, it is characterized in that, described inAccording to the comparative result of described the first wave amplitude graph of a relation and the second wave amplitude graph of a relation, judge described EGR pipelineWhether fault, comprising:
In the time that the difference of described the first wave amplitude graph of a relation and the second wave amplitude graph of a relation belongs to pre-set interval value, sentenceFixed described EGR pipeline is non-fault.
7. according to the circuit failure of EGR described in claim 6 detection method, it is characterized in that, described inAccording to the comparative result of described the first wave amplitude graph of a relation and the second wave amplitude graph of a relation, judge described EGR pipelineWhether fault, also comprises:
When the difference of described the first wave amplitude graph of a relation and the second wave amplitude graph of a relation is less than described pre-set interval valueWhen minimum of a value, judge that described EGR pipeline is principal fault.
8. according to the circuit failure of EGR described in claim 7 detection method, it is characterized in that, described inAccording to the comparative result of described the first wave amplitude graph of a relation and the second wave amplitude graph of a relation, judge described EGR pipelineWhether fault, also comprises:
When the difference of described the first wave amplitude graph of a relation and the second wave amplitude graph of a relation is greater than described pre-set interval valueWhen maximum, judge that described EGR pipeline is plugging fault.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410032636.4A CN103759907B (en) | 2014-01-23 | 2014-01-23 | A kind of EGR circuit failure detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410032636.4A CN103759907B (en) | 2014-01-23 | 2014-01-23 | A kind of EGR circuit failure detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103759907A CN103759907A (en) | 2014-04-30 |
| CN103759907B true CN103759907B (en) | 2016-05-11 |
Family
ID=50527182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410032636.4A Active CN103759907B (en) | 2014-01-23 | 2014-01-23 | A kind of EGR circuit failure detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103759907B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005885B (en) * | 2014-05-26 | 2016-08-24 | 潍柴动力股份有限公司 | A kind of pipeline blockage degree detecting method and device of gas recirculation system |
| CN104568344A (en) * | 2014-10-09 | 2015-04-29 | 芜湖扬宇机电技术开发有限公司 | EGR (Exhaust Gas Recirculation) pipeline fault detection diagnosis method |
| RU2730216C2 (en) * | 2016-05-18 | 2020-08-19 | Форд Глобал Текнолоджиз, Ллк | Method of operating an assembled motor |
| CN107478421A (en) * | 2017-08-08 | 2017-12-15 | 山东泰展机电科技股份有限公司 | A kind of magnetic valve open degree method of testing and system |
| CN107782560A (en) * | 2017-11-20 | 2018-03-09 | 潍柴动力股份有限公司 | A kind of bypass type booster fault detection method and device |
| CN109186886B (en) * | 2018-07-24 | 2021-07-23 | 锦州秀亭制管有限公司 | Method and apparatus for detecting air tightness of tube for EGR cooler of automobile |
| CN111122148B (en) * | 2019-12-17 | 2021-11-26 | 重庆南方数控设备股份有限公司 | Method for detecting blood by prejudging working state of electromagnetic valve based on hemorheometer |
| CN111413100B (en) * | 2020-03-26 | 2022-03-08 | 安徽华菱汽车有限公司 | Error reporting method and system for simulating exhaust gas circulation quantity abnormality of EGR (exhaust gas recirculation) system |
| CN114562396B (en) * | 2022-03-28 | 2022-12-20 | 江铃汽车股份有限公司 | Method for verifying reliability of low-temperature working condition of EGR (exhaust gas Recirculation) system |
| CN115096596A (en) * | 2022-06-27 | 2022-09-23 | 中国第一汽车股份有限公司 | Method, device, equipment and medium for diagnosing low-pressure EGR (exhaust gas Recirculation) system of engine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007032432A (en) * | 2005-07-27 | 2007-02-08 | Honda Motor Co Ltd | Abnormality detecting device of exhaust gas recirculation device |
| JP2007303407A (en) * | 2006-05-12 | 2007-11-22 | Honda Motor Co Ltd | Abnormality determination device for exhaust gas recirculation device |
| CN102287279A (en) * | 2010-06-03 | 2011-12-21 | 福特全球技术公司 | Non-Intrusive EGR Monitor For A Hybrid Electric Vehicle |
| CN102652218A (en) * | 2010-12-09 | 2012-08-29 | 丰田自动车株式会社 | Error detection device for EGR device |
| CN102859172A (en) * | 2010-04-22 | 2013-01-02 | 丰田自动车株式会社 | Abnormality detection device and abnormality detection method for egr system |
| CN103161614A (en) * | 2011-12-09 | 2013-06-19 | 现代自动车株式会社 | System and method for monitoring exhaust gas recirculation |
| CN103249940A (en) * | 2011-12-01 | 2013-08-14 | 丰田自动车株式会社 | Fault diagnosis device for egr system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4468039B2 (en) * | 2004-03-26 | 2010-05-26 | 富士重工業株式会社 | Failure diagnosis device for exhaust gas recirculation device |
-
2014
- 2014-01-23 CN CN201410032636.4A patent/CN103759907B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007032432A (en) * | 2005-07-27 | 2007-02-08 | Honda Motor Co Ltd | Abnormality detecting device of exhaust gas recirculation device |
| JP2007303407A (en) * | 2006-05-12 | 2007-11-22 | Honda Motor Co Ltd | Abnormality determination device for exhaust gas recirculation device |
| CN102859172A (en) * | 2010-04-22 | 2013-01-02 | 丰田自动车株式会社 | Abnormality detection device and abnormality detection method for egr system |
| CN102287279A (en) * | 2010-06-03 | 2011-12-21 | 福特全球技术公司 | Non-Intrusive EGR Monitor For A Hybrid Electric Vehicle |
| CN102652218A (en) * | 2010-12-09 | 2012-08-29 | 丰田自动车株式会社 | Error detection device for EGR device |
| CN103249940A (en) * | 2011-12-01 | 2013-08-14 | 丰田自动车株式会社 | Fault diagnosis device for egr system |
| CN103161614A (en) * | 2011-12-09 | 2013-06-19 | 现代自动车株式会社 | System and method for monitoring exhaust gas recirculation |
Non-Patent Citations (1)
| Title |
|---|
| 轿车废气再循环***故障检测及维修;赵文龙;《机电工程技术》;20060830;第35卷(第8期);第107、108、149页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103759907A (en) | 2014-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103759907B (en) | A kind of EGR circuit failure detection method | |
| CN103758649B (en) | Egr system pipeline condition detection method, install and have the vehicle of this device | |
| CA2598862A1 (en) | Exhaust gas purification apparatus, internal combustion engine comprising the same, and particulate filter restoring method | |
| CN102162403A (en) | System and method for estimating airflow restriction of an engine air filter | |
| CN104005944A (en) | Water pump anti-freezing control system and control method thereof | |
| US20120310508A1 (en) | System and method for detecting failures of mass airflow sensors in a parallel intake engine | |
| CN103946513A (en) | Anti-sticking and diagnostic strategy for exhaust system valves | |
| CN103742256B (en) | Motor, engine supercharger guard method and device | |
| CN102913331B (en) | Engine system as well as running state optimal control method and device thereof | |
| US20170335732A1 (en) | Selective catalyst reduction system and method of controlling temperature of reducing agent injection module | |
| CN102644514B (en) | Diagnosis method for drift failure of rail pressure sensor in common rail system | |
| CN105888861A (en) | Control method and system for EGR and VTG (variable turbine geometry) | |
| CN103437884A (en) | Lubricating oil control system and method for turbocharger | |
| CN103343717B (en) | A kind of motorcycle with electronic fuel injection system idle speed control | |
| CN103307711B (en) | Air-conditioner control system and control method | |
| JP2013015115A (en) | Abnormality determining system for engine | |
| CN202007708U (en) | Runaway protection equipment and system for diesel engine | |
| CN111077390B (en) | Service test method, device and equipment for electric control engine and storage medium | |
| KR101918337B1 (en) | Method and arrangement for controlling knock | |
| CN202811096U (en) | Small engine electronic control unit with controller area network (CAN) bus | |
| CN106032774B (en) | The control method and device of engine management system | |
| CN105422300A (en) | Engine control method and system | |
| CN111749771B (en) | SCR downstream temperature static rationality fault detection system and method | |
| CN205178620U (en) | A on -vehicle charging device and this super capacitor car for super capacitor car | |
| CN104329169A (en) | Universal sensor signal diagnosis and fault tolerance method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |