CN108104925A - Exhaust gas from diesel vehicle discharge on-line monitoring, diagnosis and the method repaired - Google Patents

Abstract

The present invention relates to a kind of exhaust gas from diesel vehicle on-line monitoring, diagnosis and the methods repaired, the diesel vehicle includes exhaust treatment system, the offgas duct that the exhaust treatment system includes the low temperature heating device, oxidation catalyst and the grain catcher that are connected to diesel motor exhaust pipe end in turn and is arranged in parallel with the grain catcher bypasses, the described method includes：Using the signal for starting monitoring is sent to the exhaust treatment system with the electronic control unit that the exhaust treatment system communicates, wherein the electronic control unit includes automatic monitoring modular, automatic diagnostic module and automatic repairing module.The diagnostic message on engine condition that the automatic repairing module is provided according to the diagnostic module controls the operation conditions of vehicle, and the parameter of engine is adjusted using predetermined reparation pattern under tail gas unusual condition, until confirming that diagnosed tail gas unusual condition recovers to normal condition.

Description

Exhaust gas from diesel vehicle discharge on-line monitoring, diagnosis and the method repaired

Technical field

The present invention relates to can make car owner, supervision department, producer remote on-line monitoring operation vehicle vehicle condition and can realize Remote on-line monitoring, diagnosis and exhaust gas from diesel vehicle post processing on-line monitoring, diagnosis and the restorative procedure repaired automatically, belong to vehicle connection Net system manufacturing field.

Background technology

As exhaust gas from diesel vehicle is atmosphere pollution, the especially significant contributor of PM and NOX pollutants, currently for diesel oil The treatment technology of tail gas be unable to do without DOC, DPF, SCR, and for state's IV discharge standards, two big technology paths of mainstream are EGR+ DOC/DPF and SCR.

Chinese patent application CN201510421498.3 discloses a kind of III type exhaust gas from diesel vehicle after-treatment devices of ART- and exists Line remote monitoring cloud platform, being related to a kind of can make car owner, supervision department, the vehicle of producer remote on-line monitoring operation vehicle Condition, and can realize the online remote monitoring cloud platform of III type exhaust gas from diesel vehicle after-treatment devices of ART- and the side of remote online prompting Method.How for installing the yellow mark vehicle of the after-treatment device additional, equipment running status are known rapidly, if need for car owner It safeguards；For supervision department, whether car owner is persistently using equipment to reach environmental protection standard, and whether failure causes vehicle for equipment operation Discharge is exceeded etc.；For producer, how the operating status of equipment, if being abnormal, know vehicle in moment observation each car Current location and the path of nearest maintenace point, and inform car owner etc. at the first time.

However, this application is it is not disclosed how diagnose the failure occurred in exhaust emissions processing unit and automatically Repair etc..Therefore, this field need it is a kind of exhaust emissions processing system can be monitored on-line, automatically diagnose and repair Method.

The content of the invention

Designing scheme：In order to realize above-mentioned purpose of design, the present inventor devise a kind of exhaust gas from diesel vehicle post processing Line monitoring, diagnosis and the method repaired, can be to the tail gas with grain catcher that is mounted on diesel car engine Processing system is monitored on-line, diagnosed and repaired.

In an aspect, a kind of exhaust gas from diesel vehicle on-line monitoring, diagnosis and the method repaired, the diesel vehicle bag are provided Exhaust treatment system is included, the exhaust treatment system includes being connected to the low temperature heating of diesel motor exhaust pipe end in turn Device, oxidation catalyst and grain catcher and the offgas duct being arranged in parallel with the grain catcher bypass, the method Including：

Start to supervise using sending to the exhaust treatment system with the electronic control unit that the exhaust treatment system communicates The signal of survey, wherein the electronic control unit includes automatic monitoring modular, automatic diagnostic module and automatic repairing module；According to What is received starts the signal of monitoring, the automatic monitoring modular and tail gas back pressure sensor, exhaust gas temperature sensor, engine Speed probe, additive state sensor, NOx conversion sensor, 2.5 concentration sensors of PM, flame sensor carry out double To data exchange, each item data monitored is received from it, and by every data sending of acquisition to the diagnostic module；Institute Diagnostic module is stated by each item data transmitted from the automatic monitoring modular compared with each item data pre-stored before, The diagnosis of exhaust treatment system normal operation or failure is made, and diagnostic result is sent to the automatic reparation mould Block；Operation of the diagnostic message on engine condition that the automatic repairing module is provided according to the diagnostic module to vehicle Situation is controlled, and the parameter of engine is adjusted using predetermined reparation pattern under tail gas unusual condition, until Confirm that diagnosed tail gas unusual condition recovers to normal condition.

According to the method described in foregoing aspect, if the automatic repairing module confirms that diagnosed tail gas unusual condition returns Again to normal condition, it indicates that electronic control unit is run by normal mode；If it is confirmed that the tail gas unusual condition diagnosed is not It can recover to normal condition, it indicates that the electronic control unit sends alarm to command centre and user, opens simultaneously tail Tracheae bypasses and informs the nearest repair location of user.

According to the method described in foregoing aspect, the predetermined reparation pattern in the automatic repairing module includes：It detects successively Whether the oil pump, air pump in exhaust treatment system are normal；Whether igniter plug generates flame；Whether the temperature of igniter plug has reached pre- Fixed temperature；Within a predetermined range whether tail gas pipe end, the pressure at grain catcher both ends；If (i) detect that pump does not have It works normally, then reset operation is carried out to pump, if by continuous reset still cannot normally start, judge to pump complete event Barrier terminates regenerative process；(ii) if detecting that igniter plug does not generate flame, restarted after being powered off to it, directly To generation flame；If still cannot catch fire, judge that igniter plug fails, terminate regenerative process；(iii) if monitoring to light a fire The temperature of plug is not reaching to expected temperature, is powered off, and is powered back up after the predetermined time of interval, judges that can it reach again To predetermined firing temperature, if predetermined firing temperature still cannot be reached, igniter plug failure is judged, end regenerated Journey；(iv) if monitoring that the pressure of tail gas pipe end is higher than the pressure at grain catcher both ends, judge that grain catcher goes out Existing Severe blockage is opened offgas duct bypass and is divided immediately, and carrying out particle again when its pressure drop is down in preset range catches The regeneration of storage.

According to the method described in foregoing aspect, trouble or failure information is sent to ECU while regenerative process is terminated And be shown on display module, client to be notified to carry out timely processing.

According to the method described in foregoing aspect, exhaust gas from diesel vehicle after-treatment device that the electronic control unit will collect Operation data are by the transmission link equipment of wireless transport module to operator and module is locally displayed shows, the transmission of operator Exhaust gas from diesel vehicle after-treatment device operation data are uploaded to high in the clouds intelligent platform server and high in the clouds intelligent platform by link device Server is classified to the data of upload, is counted, is analyzed, and then these fragmentation datas are recombinated, and forms visualization, chart The information of change is prompted in client, is supplied to command centre, and is stored in memory beyond the clouds.

According to the method described in foregoing aspect, by the setting of entry region, limitation tail gas monitors unqualified for supervision department The forbidden some regions of vehicle, and pass through vehicle historical track and device status data in cloud storage, held as later stage administration The evidence of method.

The present invention makes car owner, supervision department, manufacturer realize remote online based on car networking cloud platform technical solution Exhaust gas from diesel vehicle after-treatment device of the supervision configuration on diesel vehicle, enables car owner to know the operating status of vehicle in time, judges Whether need to safeguard；Supervision department is made to grasp whether driving vehicle reaches safe and environment-friendly standard in time；When enabling manufacturer The equipment running status in observation each car are carved, and are informing car owner etc. at the first time, it is most important that after can realizing tail gas The critical function monitored on-line, diagnose automatically and repaired automatically of processing unit.

Description of the drawings

The present invention is described below with reference to attached drawing.It should be appreciated that attached drawing be intended merely to explain by way of example and Illustrate the principle of the present invention, and have no intention to limit the invention to concrete scheme shown in attached drawing.In the accompanying drawings：

Fig. 1 be it is according to the present invention monitoring, diagnosis and restorative procedure functional block diagram.

Fig. 2 is the schematic diagram of exhaust treatment system according to an embodiment.

Specific embodiment

Monitoring, diagnosis and the reparation of exhaust gas from diesel vehicle processing system according to the present invention are described in detail below with reference to attached drawing Method.However, those of ordinary skill in the art are it will be appreciated that each embodiment given below is used for the purpose of making this field Those of ordinary skill better understood when the present invention, without the purpose of any restrictions.The scope of the present invention is will by right Ask what book limited.

Fig. 1 show it is according to the present invention monitoring, diagnosis and restorative procedure functional block diagram.A kind of bavin is shown in FIG. 1 Oily tail gas on-line monitoring, diagnosis and the method repaired.It the described method comprises the following steps：Using with the exhaust treatment system The electronic control unit of communication sends the signal for starting monitoring to the exhaust treatment system, wherein the electronic control unit bag Include automatic monitoring modular, automatic diagnostic module and automatic repairing module；It is described automatic according to the signal for starting monitoring received Monitoring modular and tail gas back pressure sensor, exhaust gas temperature sensor, engine speed sensor, additive state sensor, NOX Conversion ratio sensor, 2.5 concentration sensors of PM, flame sensor carry out bidirectional data exchange, receive from it monitored items Data, and by every data sending of acquisition to the diagnostic module；The diagnostic module will be from the automatic monitoring modular Each item data of transmission makes exhaust treatment system normal operation or appearance compared with each item data pre-stored before The diagnosis of failure, and diagnostic result is sent to the automatic repairing module；The automatic repairing module is according to the diagnosis The diagnostic message on engine condition that module provides controls the operation conditions of vehicle, and in tail gas unusual condition It is lower that the parameter of engine is adjusted using predetermined reparation pattern, until confirming that diagnosed tail gas unusual condition recovers to just Normal situation.

Diesel vehicle includes exhaust treatment system, and exhaust treatment system includes being connected to diesel motor exhaust pipe end in turn Low temperature heating device, oxidation catalyst and grain catcher and the offgas duct that is arranged in parallel with the grain catcher by Road.One example of exhaust treatment system is shown in FIG. 2.

In fig. 2, exhaust gas processing device 100 includes the exhaust entrance 102 being connected with the exhaust pipe of diesel engine, with arranging The heating device 103 of gas entrance connection, the igniter 101 being arranged in heating device 103, the flow spoiler being connected with heating device 101 104th, the oxidation catalyst 105 that is connected with flow spoiler 104, the particle trapper 106 being connected with oxidation catalyst 105 and The air exit 108 being connected with particle trapper 106.

In one embodiment, the shell of these components is all made of steelwork, is preferably made of stainless steel material. The surface of these components can so be made to keep bright, reduce accumulation and the corrosiveness of dust.In another embodiment, this Pass through flanged joint between a little components.In this way, be conducive to the installation of these components, dismounting and replacement.Certainly, these components also may be used To pass through other connection modes connection known to one of ordinary skill in the art, such as welding etc..

Exhaust entrance 102 is connected with the exhaust pipe mouth (not shown) of diesel engine, is vented for receiving.At one preferably Embodiment in, the cone shape of the diametrically gradual change of exhaust entrance 102, the i.e. diameter of its one end being connected with exhaust pipe is less than With the diameter of one end that heating device 103 is connected, as shown in Figure 1.In this way, when exhaust is into heating device 103, pressure and stream Speed becomes smaller so that be vented has longer time of contact in heating device 103 with the thermal current wherein generated so that exhaust can More fully heated.Such arrangement also reduces resistance of the heating device 103 to exhaust.

One important component of the exhaust treatment system is igniter 101.In an example, igniter 101 connects It receives and the burn fuel from oil inlet pipe and the fresh air from air inlet pipe.The fuel can be the combustion from engine Material, such as diesel oil.Alternatively, the fuel can also be the liquid or gaseous fuel being provided separately, such as propane, ethyl alcohol etc..

Igniter 101 can be placed as having heat transfer relation with the exhaust from the exhaust pipe of engine.For example, point Fiery device 101 can be placed at least partly in heating device shell, for the exhaust flowed into heating device shell is added The hot efficiency that oxidation catalyst (DOC) downstream is arranged on to promotion and the particle trapper that downstream is allowed further to set (DPF) regenerated relatively-high temperature.Alternately, igniter 101 can be also used for pre- before the engine is started Hot driving system, to improve the efficiency of exhaust system in engine start, so as to reduce cold start emission.

In one embodiment, igniter 101 is fixed in a manner of oblique cutting in the side wall of heating device 103, peace One end equipped with warming member is located at the hull outside of heating device 103, in order to replace warming member.Meanwhile such installation Mode reduces resistance of the igniter 101 to exhaust, advantageously reduces exhaust back pressure.

The feature important as one is provided with tail gas after igniter 101, before oxidation catalyst 110 Pipe bypass 109.Valve is provided in offgas duct bypass, the valve and ECU telecommunications, for being beaten receive that ECU sends Offgas duct bypass 109 is opened or closed during open and close instruction.Bypassed by the offgas duct, when the exhaust treatment system because Abnormal failure causes the back pressure of exhaust pipe excessive, and then leads to not normal ignition or even result in engine cisco unity malfunction When, it can be bypassed by ECU instruction unpacks offgas duct so that pressure in exhaust pipe reduces, until it is restored to normal range (NR), Then igniting regeneration is carried out again or client is notified to place under repair.In this way, it is possible to it avoids because exhaust gas treating device causes extremely Vehicle is unable to normally travel.

In one embodiment, electronic control unit includes automatic monitoring modular, automatic diagnostic module and automatic reparation Module.Automatic monitoring modular is with being used for tail gas back pressure sensor, exhaust gas temperature sensor, engine speed sensor, additive State sensor, NOx conversion sensor, 2.5 concentration sensors of PM, flame sensor connection, with the regular sensor Carry out bidirectional data exchange.Automatic diagnostic module is for the data message according to acquired in the automatic monitoring modular to vehicle Engine condition is diagnosed, and provides the diagnostic result of tail gas unusual condition or normal condition.Automatic repairing module is used for basis The diagnostic message on engine condition that the diagnostic module provides controls the operation conditions of vehicle, and in tail gas The parameter of engine is adjusted using predetermined reparation pattern under unusual condition, until confirming diagnosed tail gas unusual condition Recover to normal condition.

These sensors and its setting can be those sensors and its setting well known to those of ordinary skill in the art Method or those disclosed in some technical literatures or patent, such as disclose the 105865535th in Chinese patent application Those sensors disclosed in number.Certainly, those of ordinary skill in the art can also increase or decrease according to specific needs The number of sensor, the installation site for changing sensor etc..

For example, the predetermined reparation pattern in automatic repairing module includes：Successively detect exhaust treatment system in oil pump, Whether air pump is normal；Whether igniter plug generates flame；Whether the temperature of igniter plug has reached predetermined temperature；Tail gas pipe end, Within a predetermined range whether the pressure at grain catcher both ends；If (i) detecting that pump does not work normally, pump is answered Bit manipulation if still cannot normally start by continuous reset, judges to pump complete failure, terminates regenerative process；(ii) It if detecting that igniter plug does not generate flame, is restarted after being powered off to it, until generating flame；If still not It can catch fire, then judge that igniter plug fails, terminate regenerative process；(iii) if monitoring that the temperature of igniter plug is not reaching to expection Temperature, powered off, interval the predetermined time after be powered back up, judge that can it reach predetermined firing temperature again, such as Fruit still cannot reach predetermined firing temperature, then judge igniter plug failure, terminate regenerative process；(iv) if monitoring tail gas The pressure of pipe end is higher than the pressure at grain catcher both ends, then judges that Severe blockage occurs in grain catcher, open tail immediately Tracheae bypass is divided, and carries out the regeneration of grain catcher again when its pressure drop is down in preset range.

In an example, due to having monitored that the back pressure of exhaust raises, so ECU sends regeneration instructions, that is, indicate a little Fiery device is preheated and is lighted a fire.But after by the predetermined time, the head temperature of DPF only reaches 330 DEG C, does not reach To predetermined regeneration temperature (550 DEG C), and at the same time the back pressure in exhaust pipe is increased to 10060Pa extremely, far above being suitble to again Raw pressure.Therefore, ECU instructions stop regeneration, while the solenoid valve in the bypass of instruction unpack offgas duct, make the back of the body in exhaust pipe Pressure drop is low, until being restored to 1040Pa or so.Afterwards, solenoid valve, the temperature and pressure in exhaust pipe is confirmed are closed in ECU instructions In when being suitble in regenerated scope, the setting of each component is recovered to initial setting to set, then instructs and lights a fire again Regeneration.As a result, the temperature that still cannot reach needed for igniting regeneration is regenerated again.Therefore, ECU sends instruction, terminates regeneration, and And offgas duct bypass is opened, and tail gas back pressure is made to be maintained in the pressure limit of suitable engine work, at the same it is former to customer report Hinder information, i.e. DPF blocks excessively serious, it is necessary to dismantle regeneration to maintenace point.This avoid DPF in the case of Severe blockage Generation forced regeneration reduces the risk that the high temperature caused by a large amount of carbon soot particles burn causes DPF to rupture.

In another example, due to having monitored that the back pressure of exhaust raises, so ECU sends regeneration instructions, that is, indicate a little Fiery device is preheated and is lighted a fire.But after by the predetermined time, the head temperature of DPF only reaches 420 DEG C, does not reach To predetermined regeneration temperature (550 DEG C), and at the same time the back pressure in exhaust pipe is increased to 12560Pa extremely, far above being suitble to again Raw pressure.Therefore, ECU instructions stop regeneration, while the solenoid valve in the bypass of instruction unpack offgas duct, make the back of the body in exhaust pipe Pressure drop is low, until being restored to 900Pa or so.Afterwards, solenoid valve, the temperature and pressure in exhaust pipe is confirmed are closed in ECU instructions In when being suitble in regenerated scope, the setting of each component is recovered to initial setting to set, then instructs and lights a fire again Regeneration.Since reproductive success is lighted a fire, and a large amount of carbon soot particles accumulated in burning-off DPF, therefore the back pressure in DPF significantly drops It is low, 850Pa or so is finally reduced to, completely in the range of engine work.Therefore, ECU indicates that regenerative process terminates, Diesel engine and exhaust treatment system work normally completely.

By the monitoring cloud platform, car owner can learn whether vehicle discharges exception and monitor equipment for after-treatment state in real time, Authorities can carry out later stage supervision to the abatement equipment of input, while enhance the regulatory measure of itself, be environment total amount control System provides big data, and more product operation data can be also obtained for producer, and science data are provided for the improvement upgrading of product. In the platform, it is a set of collection data acquisition, wireless transmission, the GPS/ Big Dippeves positioning, information display function acquisition transmission equipment with Such as the ECU of Yellow Emperor, a legendary ruler's board ART-III type tail gas processing system of diesel engine communicates.The cloud platform further includes Cloud Server Group (management server, service server group, storage server group) and client.These Cloud Servers are mined massively with distributed frame Structure, the load equilibrium and the hot standby performance of safety for making entire cluster greatly improve.For example, in one embodiment, first will The operating statuses of ART-III type equipment for after-treatments including back pressure, front and rear temperature, rotating speed, additive state and its collects PM2.5 emission reduction data are transmitted to acquisition transmission equipment by ECU, which passes through movement while data are locally displayed Internet (GPRS/3G/4G) is transferred to the server in high in the clouds, and server classifies to these data uploaded, counts, dividing Then analysis recombinates these fragmentation datas, form visualization, the information of pictorialization, be shown in client.

Secondly, acquisition transmission equipment obtains vehicle rotating speed, ART-III by communicating with ART-III type equipment ECU On the one hand the data such as equipment back pressure, front and rear temperature, additive state, PM2.5 emission reduction show data in local display device Show, while cloud server is pushed to by wireless Internet, then data processing and distribution, forwarding are carried out by server.Here Server will form cloud server group by framework in a distributed manner, pass through cloud management server and carry out load balancing.The data of platform Transmission is two-way, from front end to high in the clouds：Transport module is gathered by GPRS/3G/4G transmission mechanisms, it (can be certainly with fixed frequency Definition) to server push " heartbeat " message, ensure that the connection between server is unimpeded, and by the data of acquisition module actively Server is pushed to, server (group) receives the data of magnanimity headend equipment upload, these fragmentation datas are instant by server Processing arranges formation is classified, visual, diagrammatic form information and is shown in client, while data are saved to and deposit Store up server.

ECU in exhaust gas from diesel vehicle after-treatment device passes through the exhaust gas from diesel vehicle after-treatment device collected operation data Wireless transport module to operator transmission link equipment and module be locally displayed show, the transmission link equipment of operator is by bavin Oily tail gas after-treatment device operation data upload to high in the clouds intelligent platform server and high in the clouds intelligent platform server server Classified to the data of upload, counted, analyzed, then these fragmentation datas are recombinated, form visualization, the letter of pictorialization Breath is prompted in client, is supplied to command centre, and is stored in memory beyond the clouds.

The client can view the concrete condition and data of the operation of exhaust gas from diesel vehicle after-treatment device, and after passing through The setting of platform threshold value initiative alarming and sends when data reach setting value, informs car owner, supervision department and producer, while vehicle Current geographic information can also find rapidly, inform that car owner is repaired to nearest website.

The supervision department can also be set by the setting of entry region with reference to other conditions, and limitation vehicle not up to standard is prohibited Enter some regions, reach management and control effect, and pass through vehicle historical track and device status data in cloud storage, as later stage row The evidence of political affairs law enforcement.

The high in the clouds intelligent platform server judges data, from high in the clouds to front end：When server carries out data Judge, when generating warning information, data can allow car owner or driver knows alert or even can in time with Real-time Feedback to vehicle Directly to be interacted with vehicle ECU, remote control vehicle.In addition, car owner can also know the information state of this vehicle by APP, carry out Long-range checks and controls.

How for installing the yellow mark vehicle of the present apparatus additional, equipment running status are known rapidly, if need for car owner It safeguards；For supervision department, whether car owner is persistently using equipment to reach environmental protection standard, and whether failure causes vehicle for equipment operation Discharge is exceeded etc.；For producer, how the operating status of equipment, if being abnormal, know vehicle in moment observation each car Current location and the path of nearest maintenace point, and inform car owner etc. at the first time.

Claims (6)

1. a kind of exhaust gas from diesel vehicle on-line monitoring, diagnosis and the method repaired, the diesel vehicle includes exhaust treatment system, described Exhaust treatment system includes the low temperature heating device, oxidation catalyst and the particle that are connected to diesel motor exhaust pipe end in turn Trap and the offgas duct being arranged in parallel with the grain catcher bypass, the described method includes：

Start monitoring using being sent with the electronic control unit that the exhaust treatment system communicates to the exhaust treatment system Signal, wherein the electronic control unit includes automatic monitoring modular, automatic diagnostic module and automatic repairing module,

According to the signal for starting monitoring received, the automatic monitoring modular is sensed with tail gas back pressure sensor, exhaust temperature Device, engine speed sensor, additive state sensor, NOx conversion sensor, 2.5 concentration sensors of PM, flame pass Sensor carries out bidirectional data exchange, receives from it each item data monitored, and by every data sending of acquisition to described Diagnostic module；

The diagnostic module by from each item data of the automatic monitoring modular transmission and each item data pre-stored before into Row compares, and makes the diagnosis of exhaust treatment system normal operation or failure, and diagnostic result is sent to described automatic Repair module；

The automatic repairing module is according to the diagnostic message on engine condition that the diagnostic module provides to the fortune of vehicle Row situation is controlled, and the parameter of engine is adjusted using predetermined reparation pattern under tail gas unusual condition, directly Recover to the tail gas unusual condition for confirming diagnosed to normal condition.

2. according to the method described in claim 1, it is characterized in that,

If the automatic repairing module confirms that diagnosed tail gas unusual condition returns back to normal condition, it indicates that electronic control Unit is run by normal mode；

If it is confirmed that the tail gas unusual condition diagnosed cannot recover to normal condition, it indicates that the electronic control unit is to finger It waves center and user sends alarm, open simultaneously offgas duct and bypass and inform the nearest repair location of user.

3. according to the method described in claim 1, it is characterized in that, predetermined reparation pattern bag in the automatic repairing module It includes：Whether oil pump, the air pump detected successively in exhaust treatment system be normal；Whether igniter plug generates flame；The temperature of igniter plug Whether predetermined temperature has been reached；Within a predetermined range whether tail gas pipe end, the pressure at grain catcher both ends；

If (i) detecting that pump does not work normally, reset operation is carried out to pump, if still cannot by continuous reset It is normal to start, then judge to pump complete failure, terminate regenerative process；

(ii) if detecting that igniter plug does not generate flame, restarted after being powered off to it, until generating flame；Such as Fruit still cannot catch fire, then judge that igniter plug fails, terminate regenerative process；

(iii) if monitoring that the temperature of igniter plug is not reaching to expected temperature, powered off, weight after the predetermined time of interval New power-up, judges that can it reach predetermined firing temperature, if predetermined firing temperature still cannot be reached, judges again Igniter plug failure terminates regenerative process；

(iv) if monitoring that the pressure of tail gas pipe end is higher than the pressure at grain catcher both ends, judge that grain catcher goes out Existing Severe blockage is opened offgas duct bypass and is divided immediately, and carrying out particle again when its pressure drop is down in preset range catches The regeneration of storage.

4. according to the method described in claim 3, it is characterized in that, by trouble or failure information while regenerative process is terminated It is sent to ECU and is shown on display module, client to be notified to carry out timely processing.

5. the according to the method described in claim 1, it is characterized in that, exhaust gas from diesel vehicle that the electronic control unit will collect After-treatment device runs data by the transmission link equipment of wireless transport module to operator and module is locally displayed show, fortune Exhaust gas from diesel vehicle after-treatment device operation data are uploaded to high in the clouds intelligent platform server and cloud by the transmission link equipment for seeking business End intelligent platform server is classified to the data of upload, is counted, is analyzed, and then these fragmentation datas are recombinated, and is formed Visualization, the information of pictorialization are prompted in client, are supplied to command centre, and are stored in memory beyond the clouds.

6. according to the method described in claim 1, it is characterized in that, supervision department limits tail gas by the setting of entry region The forbidden some regions of underproof vehicle are monitored, and pass through vehicle historical track and device status data in cloud storage, as The evidence of later stage administrative law enforcement.