CN104864946A - Weighing method for soot loading of DPF - Google Patents
Weighing method for soot loading of DPF Download PDFInfo
- Publication number
- CN104864946A CN104864946A CN201510150465.XA CN201510150465A CN104864946A CN 104864946 A CN104864946 A CN 104864946A CN 201510150465 A CN201510150465 A CN 201510150465A CN 104864946 A CN104864946 A CN 104864946A
- Authority
- CN
- China
- Prior art keywords
- dpf
- soot
- exemplar
- load
- loading
- 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
Landscapes
- Processes For Solid Components From Exhaust (AREA)
Abstract
The invention discloses a weighing method for soot loading of a diesel particulate filter (DPF). According to the method, DPF sample pretreatment heating, DPF sample cooling, unloaded DPF sample weighing, DPF sample soot loading, loaded DPF sample weighing, and soot loading amount calculation are carried out, thereby completing weighing of soot loading mass of the DPF sample. Therefore, when weighing is carried out on a PDF sample before soot loading each time, organic matters in a PDF filter carrier and a sealing liner can be removed completely, thereby realizing the constant initial masses of the PDF filter carrier and the sealing liner. When weighing is carried out before and after soot loading each time, a same weighing temperature is kept and water in the PDF filter and soot is removed, thereby avoiding a weighing error. Therefore, accuracy and reliable weighing of soot loading mass of the DPF sample can be realized; and regeneration safety of the DPF carrier can be guaranteed.
Description
Technical field
The present invention relates to internal combustion engine tail gas discharge post-processing technology field, particularly relate to a kind of DPF soot and load Weighing method.
Background technology
Diesel engine, due to features such as its dynamic property is strong, good stability, fuel-economies, at present, is widely used in traffic transport industry.But the discharge capacity of its particle (Particulate matter, PM) is 30 ~ 80 times of gasoline engine.Diesel engine PM will cause " haze " phenomenon, grievous injury health, and the reduction of discharging problem of diesel particulate seriously limits the development of diesel engine industry.Diesel particulate trap (Dieselparticulate filter, DPF) technology effectively can reduce diesel PM emissions, its to the filtration efficiency of PM up to more than 95%.At present, China Diesel car has started progressively use DPF.
But, when using DPF, along with PM progressively accumulates in the filtration channel of DPF, diesel exhaust gas back pressure will be caused to increase, thus affecting dynamic property, the economy of diesel engine.Therefore, after using a period of time, the PM trapped need be removed, namely carry out the regeneration of DPF in DPF.The regeneration carrying out DPF too early can make the regeneration intervals cycle time of DPF, increases regeneration frequency, causes the regeneration oil consumption of DPF excessive; Cross the regeneration that evening carries out DPF, easily too much because trapping soot in DPF, during regeneration, the heat release of soot abrupt oxidization causes the melting of DPF filtration supports, and the trapping effect of DPF was lost efficacy.Soot is the principal ingredient of diesel engine PM, and in DPF, the soot quality of trapping will directly determine the regeneration opportunity of DPF, the determination of soot load mass, is directly connected to the security of DPF device.Actual loaded Quality estimation is higher, and dpf regeneration will be made frequent, and engine consumption increases; Actual loaded Quality estimation is on the low side, and when will cause DPF hot recycling, carrier burns and melts, and the trapping effect of DPF was lost efficacy.Therefore, how accurately the soot load mass of control DPF inside to determining when that the regeneration carrying out DPF is most important.
Summary of the invention
For above-mentioned technical matters, the object of the present invention is to provide a kind of DPF soot to load Weighing method, it is accurate, reliable that the method weighs soot load mass, can ensure the regeneration security of DPF carrier.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of DPF soot loads Weighing method, comprises the steps:
A, pre-service is carried out to DPF exemplar, DPF front end face delivery temperature is increased to design temperature, continued for some time;
B, DPF exemplar to be cooled, DPF front and rear end delivery temperature is down to design temperature, continued for some time;
C, DPF exemplar to be weighed, obtain and do not load DPF exemplar quality;
D, DPF exemplar is arranged in diesel exhaust gas pipeline, regulates diesel engine condition, soot loading is carried out to DPF exemplar;
E, to load after DPF exemplar cool, DPF front and rear end delivery temperature is down to design temperature, diesel engine stop after continued for some time;
F, disassemble DPF exemplar, the DPF exemplar after loading is weighed, obtains DPF exemplar quality after loading;
G, basis do not load and load rear DPF exemplar Mass Calculation and load soot quality, compare with target load mass, obtain and load soot mass discrepancy; If load soot mass discrepancy in tolerance band, then the loading soot quality calculating acquisition is actual soot load mass; If load soot mass discrepancy to exceed tolerance band, if then calculate the loading soot quality obtained to be less than target load mass, continue to load soot, if be greater than target load mass, after being removed by the soot of loading, reload soot.
Especially, described steps A comprises: be arranged on by DPF exemplar in diesel exhaust gas pipeline, regulates diesel engine condition, improves engine exhaust temperature, and then DPF front end face delivery temperature is increased to design temperature, continued for some time.
Especially, described step B comprises: regulate diesel engine condition, reduces engine exhaust temperature, and then DPF front and rear end delivery temperature is down to design temperature, diesel engine stop after continued for some time, disassemble DPF exemplar.
Especially, electronic balance is used to weigh to DPF exemplar in described step C.
Especially, in described step D, DPF exemplar can be arranged in the diesel exhaust gas pipeline of threst stand and carry out soot loading, also can be arranged in the diesel exhaust gas pipeline of diesel vehicle and carry out soot loading.
Beneficial effect of the present invention is, described a kind of DPF soot loads Weighing method, heated up by the pre-service of DPF exemplar, the cooling of DPF exemplar, do not load that DPF exemplar is weighed, DPF exemplar soot loads, load that DPF exemplar is weighed, soot heap(ed) capacity calculates, and completes the weighing to DPF exemplar soot load mass.When guaranteeing to weigh before each DPF exemplar carries out soot loading, empty the organism in DPF filtration supports, liner, keep the initial mass of DPF filtration supports, liner constant; When carrying out weighing after soot loads front and loading at every turn, keep identical temperature of weighing, remove the water in DPF carrier, soot, avoid weighting error.Thus realize to DPF exemplar soot load mass accurate, reliably weigh, ensure the security of DPF carrier regeneration.
Accompanying drawing explanation
The diesel engine DPF soot loading system block diagram that Fig. 1 provides for the embodiment of the present invention;
The process flow diagram of the DPF soot loading Weighing method that Fig. 2 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not full content.
Please refer to Fig. 1, Fig. 1 is the diesel engine DPF soot loading system block diagram that the embodiment of the present invention provides.
In the present embodiment, diesel engine DPF soot loading system mainly comprises: diesel engine 101, engine controller 102, differential pressure pickup 103, diesel oxidation catalyst 104, diesel particulate trap 105, wherein, diesel oxidation catalyst 104 and diesel particulate trap 105 detachably encapsulate.Under diesel engine 101 normal operating conditions, diesel particulate trap 105 loads the carbon soot particles in motor exhaust, As time goes on, carbon soot particles runs up to a certain degree gradually, need diesel particulate trap 105 to disassemble from diesel engine pipeline to weigh, when the quality of the carbon soot particles loaded acquires a certain degree, engine controller 102 controls to start regenerative process in conjunction with the information that differential pressure pickup 103 gathers, diesel oxidation catalyst 104 is oxidized and produces heat, burns the carbon soot particles of accumulation in diesel particulate trap 105.It is as follows that concrete DPF soot loads Weighing method:
Please refer to Fig. 2, Fig. 2 is the process flow diagram of the DPF soot loading Weighing method that the embodiment of the present invention provides.
Following diesel oxidation catalyst (Diesel Oxidation Catalyst) is called for short DOC, and diesel particulate trap (Diesel particulate filter) is called for short DPF.
In the present embodiment, DPF soot loads Weighing method and comprises the steps:
Step S201, pre-service is carried out to DPF exemplar, DPF front end face delivery temperature is increased to design temperature, continued for some time.
DPF is designed to detachable encapsulation, DPF exemplar is arranged in the diesel exhaust gas pipeline on threst stand and carries out pre-service, regulate the rotating speed of diesel engine, the operating modes such as moment of torsion, improve engine exhaust temperature, and then DPF front end face delivery temperature is increased to more than 450 DEG C, continuous running 4 hours, because delivery temperature is higher than temperature of reaction organic in liner, make the organic principle generation oxidation reaction in DPF liner, guarantee that DPF carrier and encapsulation liner thereof mass change can not occur before and after soot loads, in order to avoid affect weighing of actual loaded soot, keep DPF filtration supports, the initial mass of liner is constant.In like manner, other temperature-rising methods also can be adopted to improve DPF front end face delivery temperature.
Step S202, DPF exemplar to be cooled, DPF front and rear end delivery temperature is down to design temperature, continued for some time.
Regulate the operating mode such as rotating speed, moment of torsion of diesel engine; reduce engine exhaust temperature; and then DPF front and rear end delivery temperature is down to 150 DEG C; diesel engine stop after 10 minutes; testing crew wears protective gloves; in 5 minutes, disassemble DPF exemplar, avoid during dismounting producing larger vibrations as far as possible, forbid Rough operation.In like manner, other cooling means also can be adopted to reduce DPF front and rear end delivery temperature.
Step S203, DPF exemplar to be weighed, obtain and do not load DPF exemplar quality.
Use weighing precision be ± electronic balance of 0.5g weighs to the DPF exemplar do not loaded, first by electronic balance leveling, cleaning before weighing.Then, keep DPF exemplar inlet end to face up, gently be placed on electronic balance, record data after registration to be weighed is stable.Repeat to weigh 3 times, using the mean value of 3 numerical value of weighing as the mass M 0 not loading DPF exemplar and weigh.
Step S204, DPF exemplar is arranged in diesel exhaust gas pipeline, regulates diesel engine condition, soot loading is carried out to DPF exemplar.
DPF exemplar is arranged on threst stand or diesel vehicle diesel exhaust gas pipeline in carry out soot loading, regulate the operating mode such as rotating speed, moment of torsion of diesel engine, DPF front end face delivery temperature is made to be stabilized in target temperature (temperature of oxidation reaction does not occur diesel engine carbon black, and concrete condition is depending on the regeneration of DPF).Operate continuously under this steady working condition, the soot realizing DPF carrier loads.
Step 205: the DPF exemplar after loading is cooled, DPF front and rear end delivery temperature is down to design temperature, diesel engine stop after continued for some time.
The soot load time of DPF exemplar is determined by the soot particulate concentration of emission under this operating mode and target heap(ed) capacity; after reaching the load time; the operating mode such as rotating speed, moment of torsion of diesel engine is regulated to reduce engine exhaust temperature; and then DPF front and rear end delivery temperature is down to 150 DEG C, diesel engine stop after 10 minutes.After pre-service heating and after soot loading, DPF exemplar is cooled to identical temperature to weigh, DPF carrier, the dewatering of soot can be realized, thus avoid DPF exemplar in weighing process because the moisture absorbed in air causes weighting error, ensure the precision weighed.
Step 206, disassemble DPF exemplar, the DPF exemplar after loading is weighed, obtains DPF exemplar quality after loading.
Testing crew wears protective gloves, disassembles DPF exemplar, avoid producing larger vibrations as far as possible, forbid Rough operation during dismounting in 5 minutes.Use weighing precision be ± electronic balance of 0.5g weighs, first by electronic balance leveling, cleaning before weighing to the DPF exemplar after loading.Then, keep DPF exemplar inlet end to face up, gently be placed on electronic balance, record data after registration to be weighed is stable.Repeat to weigh 3 times, using the mass M 1 that the mean value of 3 numerical value of weighing is weighed as the DPF exemplar after loading.
Step 207, basis do not load and load rear DPF exemplar Mass Calculation and load soot quality, compare with target load mass, obtain and load soot mass discrepancy; If load soot mass discrepancy in tolerance band, then the loading soot quality calculating acquisition is actual soot load mass; If load soot mass discrepancy to exceed tolerance band, if calculate the loading soot quality obtained to be less than target load mass, continue to load soot, if be greater than target load mass, after being removed by the soot of loading, reload soot.
According to not loading DPF exemplar mass M 0 and DPF exemplar mass M 1 after loading, calculate and load soot quality Δ M=M1-M0, by the soot quality Δ M of loading compared with target load mass, if load soot mass discrepancy (specifically to determine by carrier dimensions and design accuracy) in tolerance band, then Δ M is actual soot load mass; If load soot mass discrepancy to exceed tolerance band, if the soot quality Δ M loaded is less than target load mass, can continue to load soot, if be greater than target load mass, after the soot of loading need being removed, reload soot.
Technical scheme of the present invention do not load weigh before pre-service intensification is carried out to DPF exemplar, when guaranteeing to weigh before each DPF exemplar carries out soot loading, empty the organism in DPF filtration supports, liner, keep the initial mass of DPF filtration supports, liner constant; After pre-service intensification and after soot loading, be cooled to identical temperature to weigh DPF exemplar, guarantee to keep identical temperature of weighing with weighing after loading before carry out soot loads at every turn, the water in removal DPF carrier, soot, avoids weighting error.Thus realize to DPF exemplar soot load mass accurate, reliably weigh, ensure the security of DPF carrier regeneration.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (5)
1. DPF soot loads a Weighing method, it is characterized in that comprising the steps:
A, pre-service is carried out to DPF exemplar, DPF front end face delivery temperature is increased to design temperature, continued for some time;
B, DPF exemplar to be cooled, DPF front and rear end delivery temperature is down to design temperature, continued for some time;
C, DPF exemplar to be weighed, obtain and do not load DPF exemplar quality;
D, DPF exemplar is arranged in diesel exhaust gas pipeline, regulates diesel engine condition, soot loading is carried out to DPF exemplar;
E, to load after DPF exemplar cool, DPF front and rear end delivery temperature is down to design temperature, diesel engine stop after continued for some time;
F, disassemble DPF exemplar, the DPF exemplar after loading is weighed, obtains DPF exemplar quality after loading;
G, basis do not load and load rear DPF exemplar Mass Calculation and load soot quality, compare with target load mass, obtain and load soot mass discrepancy; If load soot mass discrepancy in tolerance band, then the loading soot quality calculating acquisition is actual soot load mass; If load soot mass discrepancy to exceed tolerance band, if then calculate the loading soot quality obtained to be less than target load mass, continue to load soot, if be greater than target load mass, after being removed by the soot of loading, reload soot.
2. DPF soot according to claim 1 loads Weighing method, it is characterized in that, described steps A comprises: be arranged on by DPF exemplar in diesel exhaust gas pipeline, regulate diesel engine condition, improve engine exhaust temperature, and then DPF front end face delivery temperature is increased to design temperature, continued for some time.
3. DPF soot according to claim 2 loads Weighing method; it is characterized in that; described step B comprises: regulate diesel engine condition; reduce engine exhaust temperature; and then DPF front and rear end delivery temperature is down to design temperature; diesel engine stop after continued for some time, disassembles DPF exemplar.
4. DPF soot according to claim 3 loads Weighing method, it is characterized in that, uses electronic balance to weigh to DPF exemplar in described step C.
5. DPF soot according to claim 4 loads Weighing method, it is characterized in that, in described step D, DPF exemplar can be arranged in the diesel exhaust gas pipeline of threst stand and carry out soot loading, also can be arranged in the diesel exhaust gas pipeline of diesel vehicle and carry out soot loading.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510150465.XA CN104864946A (en) | 2015-03-31 | 2015-03-31 | Weighing method for soot loading of DPF |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510150465.XA CN104864946A (en) | 2015-03-31 | 2015-03-31 | Weighing method for soot loading of DPF |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104864946A true CN104864946A (en) | 2015-08-26 |
Family
ID=53910936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510150465.XA Pending CN104864946A (en) | 2015-03-31 | 2015-03-31 | Weighing method for soot loading of DPF |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104864946A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143404A (en) * | 2017-04-20 | 2017-09-08 | 同济大学 | A kind of box-like preprocessor reduction performance test system of diesel engine unit |
| CN109100154A (en) * | 2018-07-05 | 2018-12-28 | 无锡威孚环保催化剂有限公司 | A kind of quick ash content collecting apparatus of gasoline engine grain catcher and its application method |
| CN114320547A (en) * | 2021-12-28 | 2022-04-12 | 联合汽车电子有限公司 | Method, device, apparatus, system and storage medium for regenerating a particle trap |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005256744A (en) * | 2004-03-12 | 2005-09-22 | Bosch Corp | Case structure for exhaust gas aftertreatment device |
| KR20090012430A (en) * | 2007-07-30 | 2009-02-04 | 현대자동차주식회사 | Dpf recycling methed |
| CN103528916A (en) * | 2013-09-27 | 2014-01-22 | 潍柴动力股份有限公司 | Carbon loading capacity calibration method and system for diesel particle filter |
| CN204225964U (en) * | 2014-10-29 | 2015-03-25 | 凯龙高科技股份有限公司 | A kind of DPF diesel particulate filtration system electric control device |
-
2015
- 2015-03-31 CN CN201510150465.XA patent/CN104864946A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005256744A (en) * | 2004-03-12 | 2005-09-22 | Bosch Corp | Case structure for exhaust gas aftertreatment device |
| KR20090012430A (en) * | 2007-07-30 | 2009-02-04 | 현대자동차주식회사 | Dpf recycling methed |
| CN103528916A (en) * | 2013-09-27 | 2014-01-22 | 潍柴动力股份有限公司 | Carbon loading capacity calibration method and system for diesel particle filter |
| CN204225964U (en) * | 2014-10-29 | 2015-03-25 | 凯龙高科技股份有限公司 | A kind of DPF diesel particulate filtration system electric control device |
Non-Patent Citations (2)
| Title |
|---|
| 李勇: "柴油机微粒后处理器性能与再生过程分析", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
| 苏志亮: "颗粒捕集器（DPF）再生过程的试验分析", 《技术纵横》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143404A (en) * | 2017-04-20 | 2017-09-08 | 同济大学 | A kind of box-like preprocessor reduction performance test system of diesel engine unit |
| CN109100154A (en) * | 2018-07-05 | 2018-12-28 | 无锡威孚环保催化剂有限公司 | A kind of quick ash content collecting apparatus of gasoline engine grain catcher and its application method |
| CN114320547A (en) * | 2021-12-28 | 2022-04-12 | 联合汽车电子有限公司 | Method, device, apparatus, system and storage medium for regenerating a particle trap |
| CN114320547B (en) * | 2021-12-28 | 2023-06-20 | 联合汽车电子有限公司 | Regeneration method, device, equipment, system and storage medium of particle trap |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104061051B (en) | Diesel particulate trap regeneration opportunity control method | |
| Bai et al. | Soot loading estimation model and passive regeneration characteristics of DPF system for heavy-duty engine | |
| CN107605583B (en) | Diesel vehicle grain catcher tires out carbon amounts evaluation method | |
| CN108487970B (en) | Temperature control device for regeneration stage of particle filtering and trapping device and calculation method | |
| CN109404107B (en) | Diesel particulate filter carbon loading estimation method | |
| US8650942B2 (en) | Method for diagnosing an exhaust gas sensor and device for carrying out the method | |
| RU2622586C2 (en) | Control method of soot combustion in particulate filter of vehicle diesel engine | |
| CN110941917A (en) | Diesel engine DPF carbon loading capacity calculation method based on pressure drop | |
| CN106481419A (en) | A kind of carbon deposition quantity computational methods of diesel engine particle catcher | |
| EP1519020A2 (en) | Regeneration control of diesel particular filter | |
| US8214135B2 (en) | Particulate filter ash loading prediction method and vehicle using same | |
| US20120031080A1 (en) | Method and apparatus for predicting peak temperature in a vehicle particulate filter | |
| CN112682141B (en) | Carbon load detection method, device, ECU, storage medium, and program product | |
| CN104864946A (en) | Weighing method for soot loading of DPF | |
| CN111379630A (en) | Engine exhaust temperature control system and method | |
| US10113469B2 (en) | Method of protecting a diesel particulate filter from overheating | |
| JP5337069B2 (en) | Engine exhaust pressure loss calculation device | |
| CN106837496A (en) | Engine particulate purifying regeneration control system | |
| JP2010196498A (en) | Pm emission estimation device | |
| CN112443405A (en) | Controlling exhaust gas temperature and intake manifold pressure using a variable geometry turbocharger | |
| CN114046196A (en) | Temperature control device and temperature control method based on PID control | |
| WO2015164446A1 (en) | Reductant injector temperature model based on coil resistance | |
| SE536180C2 (en) | Method and system for determining particulate emissions in an internal combustion engine | |
| CN103196663B (en) | Testing method of performance of diesel particle filter liner | |
| US20130180230A1 (en) | System and method for controlling regeneration within an after-treatment component of a compression-ignition engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150826 |
|
| RJ01 | Rejection of invention patent application after publication |