CN113513398A - Crystallization detection method and device for post-processor mixer and post-processing system - Google Patents
Crystallization detection method and device for post-processor mixer and post-processing system Download PDFInfo
- Publication number
- CN113513398A CN113513398A CN202110955289.2A CN202110955289A CN113513398A CN 113513398 A CN113513398 A CN 113513398A CN 202110955289 A CN202110955289 A CN 202110955289A CN 113513398 A CN113513398 A CN 113513398A
- Authority
- CN
- China
- Prior art keywords
- mixer
- rear end
- crystallization
- pressure value
- pressure
- 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.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
- F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1486—Means to prevent the substance from freezing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The invention relates to the technical field of diesel engine post-processing, and particularly discloses a crystallization detection method for a mixer of a diesel engine post-processor, wherein the crystallization detection method comprises the following steps: acquiring a pressure value at the rear end of the mixer in real time; comparing the pressure value at the rear end of the mixer with a mapping table to obtain the current crystal weight in the mixer, and recording the corresponding relation between the pressure value at the rear end of the mixer and the crystal weight in the mapping table; controlling and displaying the current crystallization weight; comparing the obtained current pressure value at the rear end of the mixer with a preset pressure threshold; and if the current pressure value exceeds the preset pressure threshold, generating a crystal clearing instruction. The invention also discloses a crystallization detection device and a post-processing system for the mixer of the post-processor of the diesel engine. The crystallization detection method for the diesel engine postprocessor mixer can realize the detection of the crystallization condition in the mixer and can quickly remove the crystals when the weight of the crystals is excessive.
Description
Technical Field
The invention relates to the technical field of diesel engine post-processing, in particular to a crystallization detection method for a diesel engine post-processor mixer, a crystallization detection device for the post-processor mixer and a post-processing system.
Background
Today, the automobile industry is increasingly developed, the output of the diesel engine also accounts for a great proportion, and the diesel engine has the advantages of enough power, low cost and higher reliability. Meanwhile, the emission limit of the diesel engine is more strict by the country, under the emission condition, in order to better reduce the emission of NOx, the injection quantity calibrated by the diesel engine after-treatment is often larger, so that the mixer is crystallized under the condition of too large injection quantity, and the mixer is blocked under the serious condition, so that the after-treatment system cannot normally work, and the normal running of the automobile is influenced.
Disclosure of Invention
The invention provides a crystallization detection method for a diesel engine postprocessor mixer, a crystallization detection device for the postprocessor mixer and a postprocessing system, which solve the problem that the crystallization condition in the mixer cannot be monitored in the related art.
As a first aspect of the present invention, there is provided a crystallization detecting method for a diesel engine after-treatment mixer, in which a rear end of the mixer is connected to a front end of an SCR catalyst, the crystallization detecting method for a diesel engine after-treatment mixer comprising:
acquiring a pressure value at the rear end of the mixer in real time;
comparing the pressure value at the rear end of the mixer with a mapping table to obtain the current crystal weight in the mixer, and recording the corresponding relation between the pressure value at the rear end of the mixer and the crystal weight in the mapping table;
controlling and displaying the current crystallization weight;
comparing the obtained current pressure value at the rear end of the mixer with a preset pressure threshold;
and if the current pressure value exceeds the preset pressure threshold, generating a crystal clearing instruction.
Further, the crystallization detection method for a diesel engine after-processor mixer further comprises, before the step of comparing the pressure value at the rear end of the mixer with a mapping table:
a mapping table is obtained.
Further, the obtaining the mapping table includes:
simulating mixer crystallization;
setting unit crystal weight, and recording pressure data of the rear end of the mixer under the first unit crystal weight;
recording the pressure data of the rear end of the corresponding mixer when adding one unit of crystal weight;
and forming a mapping table by using the pressure data of the rear end of the mixer corresponding to each unit crystallization weight.
Further, when the post-treatment state is deteriorated after increasing one unit crystal weight, the pressure data of the rear end of the mixer at that time and the total crystal weight at that time are recorded;
the pressure data at the rear end of the mixer at this time is used as a pressure preset threshold.
Further, the unit crystal weight includes 10 g.
Further, the crystallization detection method for the diesel engine after-treatment mixer further comprises the following steps:
after the crystallization clearing instruction is executed for a preset time, acquiring the current pressure value of the rear end of the mixer again;
judging whether the current pressure value at the rear end of the mixer is smaller than the preset pressure threshold value or not;
if the current pressure value at the rear end of the mixer is smaller than the preset pressure threshold, judging that the crystal removal work is finished;
and if the current pressure value at the rear end of the mixer is not less than the preset pressure threshold, continuing to wait for crystal removal, and repeating the judgment process until the crystal removal is finished.
As another aspect of the present invention, there is provided a crystallization detecting apparatus for a diesel engine after-treatment mixer, for implementing the crystallization detecting method for a diesel engine after-treatment mixer described above, wherein a rear end of the mixer is connected to a front end of an SCR catalyst, the crystallization detecting apparatus for a diesel engine after-treatment mixer comprising:
the acquisition module is used for acquiring the pressure value of the rear end of the mixer in real time;
the first comparison module is used for comparing the pressure value at the rear end of the mixer with a mapping table to obtain the current crystal weight in the mixer, and the mapping table records the corresponding relation between the pressure value at the rear end of the mixer and the crystal weight;
the control display module is used for displaying the current crystallization weight;
the second comparison module is used for comparing the obtained current pressure value at the rear end of the mixer with a preset pressure threshold;
and the crystal clearing instruction generating module is used for generating a crystal clearing instruction if the current pressure value exceeds a preset pressure threshold value.
As another aspect of the present invention, there is provided an aftertreatment system, comprising a mixer, an SCR catalyst, a pressure test device and the crystallization detection device for a diesel aftertreatment mixer, wherein the rear end of the mixer is connected to the front end of the SCR catalyst, the pressure test device is disposed at the connection end of the mixer and the SCR catalyst, the pressure test device is in communication connection with the crystallization detection device for the diesel aftertreatment mixer, the crystallization detection device for the diesel aftertreatment mixer is also connected to an engine, the pressure test device is configured to detect a pressure value at the rear end of the mixer, the crystallization detection device for the diesel aftertreatment mixer is configured to determine a crystallization degree in the mixer according to the pressure value at the rear end of the mixer and is capable of generating a crystallization removal command when a current pressure value at the rear end of the mixer exceeds a preset pressure threshold, so that the engine can be started according to the crystallization removal instruction and then the oil injection amount is used for heating the DPF.
Further, still include: and the display screen is in communication connection with the crystallization detection device for the diesel engine postprocessor mixer and is used for displaying the current crystallization weight.
Further, the pressure testing device comprises a pressure sensor.
According to the crystallization detection method for the mixer of the post-processor of the diesel engine, the crystallization condition of the mixer can be monitored by acquiring the pressure value at the rear end of the mixer, and when the crystallization weight is too large, the post-processing heating can be triggered to quickly remove the crystals, so that the condition that no crystals exceed the standard can be ensured for a long time, the SCR efficiency can be ensured, and the post-processing sample piece can stably work for a long time.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a flow chart of a crystallization detection method for a diesel aftertreatment mixer in accordance with the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this embodiment, a crystallization detection method for a diesel engine after-treatment mixer is provided, and fig. 1 is a flowchart of a crystallization detection method for a diesel engine after-treatment mixer according to an embodiment of the present invention, where a rear end of the mixer is connected to a front end of an SCR catalyst, as shown in fig. 1, the crystallization detection method for a diesel engine after-treatment mixer includes:
s110, acquiring a pressure value at the rear end of the mixer in real time;
it should be understood that a pressure test device is provided at the rear end of the mixer, or at the front end of the SCR catalyst, by which the pressure value at the rear end of the mixer is detected.
In order to monitor the crystal weight at the rear end of the mixer, the corresponding relationship between the pressure value and the crystal weight needs to be known, that is, a mapping table is obtained.
In this embodiment of the present invention, the obtaining the mapping table includes:
simulating mixer crystallization;
setting unit crystal weight, and recording pressure data of the rear end of the mixer under the first unit crystal weight;
recording the pressure data of the rear end of the corresponding mixer when adding one unit of crystal weight;
and forming a mapping table by using the pressure data of the rear end of the mixer corresponding to each unit crystallization weight.
Further, when the post-treatment state is deteriorated after increasing one unit crystal weight, the pressure data of the rear end of the mixer at that time and the total crystal weight at that time are recorded;
the pressure data at the rear end of the mixer at this time is used as a pressure preset threshold.
In an embodiment of the present invention, the unit crystalline weight includes 10 g.
It will be appreciated that the rapid crystallization is simulated on the bench, starting at 10g, with a gradient of every 10g, and the pressure indication of the pressure measurement device is recorded for each weight of crystal, recorded in the table, until the amount of crystallization is high and the post-treatment condition deteriorates, and the value of the pressure measurement device at that time is also recorded.
S120, comparing the pressure value at the rear end of the mixer with a mapping table to obtain the current crystal weight in the mixer, and recording the corresponding relation between the pressure value at the rear end of the mixer and the crystal weight in the mapping table;
comparing the pressure value at the rear end of the mixer with the mapping table obtained in the foregoing, the current crystal weight corresponding to the current pressure value at the rear end of the mixer can be obtained.
S130, controlling and displaying the current crystallization weight;
the current crystallization weight corresponding to the current pressure value can be sent to the display screen to be displayed, so that a user can monitor the current crystallization weight in real time.
S140, comparing the obtained current pressure value of the rear end of the mixer with a preset pressure threshold value;
and S150, if the current pressure value exceeds the preset pressure threshold, generating a crystal removal instruction.
Further, after the crystallization removal instruction is executed for a preset time, the current pressure value of the rear end of the mixer is obtained again;
judging whether the current pressure value at the rear end of the mixer is smaller than the preset pressure threshold value or not;
if the current pressure value at the rear end of the mixer is smaller than the preset pressure threshold, judging that the crystal removal work is finished;
and if the current pressure value at the rear end of the mixer is not less than the preset pressure threshold, continuing to wait for crystal removal, and repeating the judgment process until the crystal removal is finished.
It should be understood that when the crystal weight in the mixer reaches a critical state (the post-treatment state deteriorates) and the DPF does not trigger the regeneration function to remove the crystals, the mixer crystal removal command is required, the post-injection oil amount of the engine is turned on to heat the DPF, a temperature gradient is preset to allow the 10-minute temperature to reach 550 ℃, the function is turned on for only 10 minutes, and the pressure test device is observed after the DPF is turned off, and if the temperature is within the standard limit, the crystal removal operation is normally completed in this state.
According to the crystallization detection method for the mixer of the post-processor of the diesel engine, provided by the embodiment of the invention, the crystallization condition of the mixer can be monitored by acquiring the pressure value at the rear end of the mixer, and when the crystallization weight is too much, the post-processing heating can be triggered to quickly remove the crystals, so that the condition that no crystals exceed the standard can be ensured for a long time, the SCR efficiency is ensured, and the long-time stable work of post-processing sample pieces is ensured.
As another embodiment of the present invention, there is provided a crystallization detecting apparatus for a diesel engine after-treatment mixer, for implementing the crystallization detecting method for a diesel engine after-treatment mixer described above, wherein a rear end of the mixer is connected to a front end of an SCR catalyst, the crystallization detecting apparatus for a diesel engine after-treatment mixer comprising:
the acquisition module is used for acquiring the pressure value of the rear end of the mixer in real time;
the first comparison module is used for comparing the pressure value at the rear end of the mixer with a mapping table to obtain the current crystal weight in the mixer, and the mapping table records the corresponding relation between the pressure value at the rear end of the mixer and the crystal weight;
the control display module is used for displaying the current crystallization weight;
the second comparison module is used for comparing the obtained current pressure value at the rear end of the mixer with a preset pressure threshold;
and the crystal clearing instruction generating module is used for generating a crystal clearing instruction if the current pressure value exceeds a preset pressure threshold value.
According to the crystallization detection device for the mixer of the post-processor of the diesel engine, the crystallization condition of the mixer can be monitored by acquiring the pressure value at the rear end of the mixer, and when the crystallization weight is too large, the post-processing heating can be triggered to quickly remove the crystals, so that the condition that no crystals exceed the standard can be ensured for a long time, the SCR efficiency can be ensured, and the post-processing sample piece can stably work for a long time.
For the specific working principle of the crystallization detection device for a diesel engine postprocessor mixer provided by the invention, reference may be made to the foregoing description of the crystallization detection method for a diesel engine postprocessor mixer, and further description is omitted here.
As another embodiment of the present invention, an aftertreatment system is provided, which includes a mixer, an SCR catalyst, a pressure testing device, and the crystallization detection device for a diesel aftertreatment mixer described above, wherein a rear end of the mixer is connected to a front end of the SCR catalyst, the pressure testing device is disposed at a connection end of the mixer and the SCR catalyst, the pressure testing device is connected to the crystallization detection device for the diesel aftertreatment mixer in a communication manner, the crystallization detection device for the diesel aftertreatment mixer is further connected to an engine, the pressure testing device is configured to detect a pressure value at a rear end of the mixer, the crystallization detection device for the diesel aftertreatment mixer is configured to determine a crystallization degree in the mixer according to the pressure value at the rear end of the mixer and is capable of generating a crystallization removal command when a current pressure value at the rear end of the mixer exceeds a preset pressure threshold, so that the engine can be started according to the crystallization removal instruction and then the oil injection amount is used for heating the DPF.
Further, still include: and the display screen is in communication connection with the crystallization detection device for the diesel engine postprocessor mixer and is used for displaying the current crystallization weight.
Preferably, the pressure testing device comprises a pressure sensor.
To sum up, in the aftertreatment system according to the embodiment of the present invention, the measurement pressure sensor is installed at the rear end of the mixer, the rapid crystallization condition is simulated on the stage, the regeneration function is turned off, crystals are accumulated to 50g, 100g, 150g, and 200g until the engine state deteriorates, the pressure value corresponding to the crystals is recorded, the pressure value is set as the reference pressure, and the acceptable range is considered within the pressure value. The aftertreatment system can ensure that the SCR efficiency is not influenced and the power of an engine is ensured.
For the specific operation of the aftertreatment system, reference may be made to the foregoing description of the crystallization detection method for the diesel aftertreatment mixer, and further description is omitted here.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A crystallization detection method for a diesel engine after-treatment mixer is characterized in that the rear end of the mixer is connected with the front end of an SCR catalyst, and the crystallization detection method for the diesel engine after-treatment mixer comprises the following steps:
acquiring a pressure value at the rear end of the mixer in real time;
comparing the pressure value at the rear end of the mixer with a mapping table to obtain the current crystal weight in the mixer, and recording the corresponding relation between the pressure value at the rear end of the mixer and the crystal weight in the mapping table;
controlling and displaying the current crystallization weight;
comparing the obtained current pressure value at the rear end of the mixer with a preset pressure threshold;
and if the current pressure value exceeds the preset pressure threshold, generating a crystal clearing instruction.
2. The crystallization detection method for a diesel aftertreatment mixer of claim 1, further comprising, prior to the step of comparing the pressure value at the rear end of the mixer to a mapping table:
a mapping table is obtained.
3. The crystallization detection method for a diesel aftertreatment mixer of claim 2, wherein the obtaining the mapping table comprises:
simulating mixer crystallization;
setting unit crystal weight, and recording pressure data of the rear end of the mixer under the first unit crystal weight;
recording the pressure data of the rear end of the corresponding mixer when adding one unit of crystal weight;
and forming a mapping table by using the pressure data of the rear end of the mixer corresponding to each unit crystallization weight.
4. The crystallization detecting method for a diesel aftertreatment mixer according to claim 3,
when the post-treatment state is deteriorated after increasing one unit crystal weight, recording the pressure data of the rear end of the mixer at the moment and recording the total crystal weight at the moment;
the pressure data at the rear end of the mixer at this time is used as a pressure preset threshold.
5. The method of claim 4, wherein the unit crystal weight comprises 10 g.
6. The crystallization detection method for a diesel aftertreatment mixer of claim 1, further comprising:
after the crystallization clearing instruction is executed for a preset time, acquiring the current pressure value of the rear end of the mixer again;
judging whether the current pressure value at the rear end of the mixer is smaller than the preset pressure threshold value or not;
if the current pressure value at the rear end of the mixer is smaller than the preset pressure threshold, judging that the crystal removal work is finished;
and if the current pressure value at the rear end of the mixer is not less than the preset pressure threshold, continuing to wait for crystal removal, and repeating the judgment process until the crystal removal is finished.
7. A crystallization detecting device for a diesel engine after-processor mixer for implementing the crystallization detecting method for a diesel engine after-processor mixer according to any one of claims 1 to 6, wherein a rear end of the mixer is connected to a front end of the SCR catalyst, the crystallization detecting device for a diesel engine after-processor mixer comprising:
the acquisition module is used for acquiring the pressure value of the rear end of the mixer in real time;
the first comparison module is used for comparing the pressure value at the rear end of the mixer with a mapping table to obtain the current crystal weight in the mixer, and the mapping table records the corresponding relation between the pressure value at the rear end of the mixer and the crystal weight;
the control display module is used for displaying the current crystallization weight;
the second comparison module is used for comparing the obtained current pressure value at the rear end of the mixer with a preset pressure threshold;
and the crystal clearing instruction generating module is used for generating a crystal clearing instruction if the current pressure value exceeds a preset pressure threshold value.
8. An after-treatment system, which comprises a mixer, an SCR catalyst, a pressure testing device and the crystallization detection device for the mixer of the diesel engine after-treatment device as claimed in claim 7, wherein the rear end of the mixer is connected with the front end of the SCR catalyst, the pressure testing device is arranged at the connecting end of the mixer and the SCR catalyst, the pressure testing device is in communication connection with the crystallization detection device for the mixer of the diesel engine after-treatment device, the crystallization detection device for the mixer of the diesel engine after-treatment device is also connected with an engine, the pressure testing device is used for detecting the pressure value at the rear end of the mixer, the crystallization detection device for the mixer of the diesel engine after-treatment device is used for judging the crystallization degree in the mixer according to the pressure value at the rear end of the mixer and can generate a crystallization clearing instruction when the current pressure value at the rear end of the mixer exceeds a preset pressure threshold value, so that the engine can be started according to the crystallization removal instruction and then the oil injection amount is used for heating the DPF.
9. The aftertreatment system of claim 8, further comprising: and the display screen is in communication connection with the crystallization detection device for the diesel engine postprocessor mixer and is used for displaying the current crystallization weight.
10. The aftertreatment system of claim 8, wherein the pressure testing device comprises a pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110955289.2A CN113513398A (en) | 2021-08-19 | 2021-08-19 | Crystallization detection method and device for post-processor mixer and post-processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110955289.2A CN113513398A (en) | 2021-08-19 | 2021-08-19 | Crystallization detection method and device for post-processor mixer and post-processing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113513398A true CN113513398A (en) | 2021-10-19 |
Family
ID=78069048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110955289.2A Pending CN113513398A (en) | 2021-08-19 | 2021-08-19 | Crystallization detection method and device for post-processor mixer and post-processing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113513398A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508404A (en) * | 2022-04-20 | 2022-05-17 | 潍柴动力股份有限公司 | Urea crystal removing method and device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552770A (en) * | 2019-09-18 | 2019-12-10 | 潍柴动力股份有限公司 | Mixer crystallization detection method and system |
-
2021
- 2021-08-19 CN CN202110955289.2A patent/CN113513398A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552770A (en) * | 2019-09-18 | 2019-12-10 | 潍柴动力股份有限公司 | Mixer crystallization detection method and system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508404A (en) * | 2022-04-20 | 2022-05-17 | 潍柴动力股份有限公司 | Urea crystal removing method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9995653B2 (en) | Method and device for diagnosing the function of an exhaust gas sensor | |
| CN108839568B (en) | Electric automobile pre-charge control method and device | |
| US8266890B2 (en) | Preventing soot underestimation in diesel particulate filters by determining the restriction sensitivity of soot | |
| US20100180669A1 (en) | Monitoring of a particle limit value in the exhaust gas of an internal combustion engine | |
| US9032719B2 (en) | Particulate filter performance monitoring | |
| CN111173603B (en) | Method, device and system for monitoring urea consumption | |
| US8283891B2 (en) | Power source health assessment methods and systems thereof | |
| DE102014209960A1 (en) | Method and device for evaluating the functionality of an SCR catalytic converter in an exhaust system of a diesel engine | |
| CN107131041A (en) | For the method for the exhausted gas post-processing system for diagnosing internal combustion engine | |
| CN113513398A (en) | Crystallization detection method and device for post-processor mixer and post-processing system | |
| CN116907727B (en) | Method and device for detecting fault of pressure sensor before vortex, vehicle and storage medium | |
| KR20180089301A (en) | Method for detecting an error in an scr system by means of an ammonia slip | |
| KR20180089300A (en) | Method for detecting an error in an scr system by means of an ammonia slip | |
| RU2605079C2 (en) | Diagnostics of starting system | |
| CN112943411B (en) | DPF system, control method and device | |
| CN108547689B (en) | Vehicle control method and control device and vehicle | |
| CN104204788A (en) | Method and device for operating heatable exhaust sensor | |
| CN111156093B (en) | Control method and device for diesel-alcohol dual-fuel engine | |
| KR20160057190A (en) | Method and Apparatus for Dosing Control Adaptable to Trouble of Exhaust Flux Measure in SCR System | |
| CN103696839B (en) | The detecting method of DPF active regeneration system and device | |
| US11066972B2 (en) | Method for diagnosing a particle filter of a motor vehicle using a particle sensor connected downstream | |
| CN106246307B (en) | A kind of detection method and device | |
| KR102491742B1 (en) | Diagnostic methods for electrical circuits and electrical loads | |
| CN113847122B (en) | GPF regeneration control method and device for automobile and computer storage medium | |
| CN116086809B (en) | Engine monitoring method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211019 |