CN109339919A - A kind of DPF carrier protective device and method - Google Patents
A kind of DPF carrier protective device and method Download PDFInfo
- Publication number
- CN109339919A CN109339919A CN201811155845.2A CN201811155845A CN109339919A CN 109339919 A CN109339919 A CN 109339919A CN 201811155845 A CN201811155845 A CN 201811155845A CN 109339919 A CN109339919 A CN 109339919A
- Authority
- CN
- China
- Prior art keywords
- dpf
- dpf carrier
- valve
- protective device
- bypass pipe
- 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.)
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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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/002—Apparatus adapted for particular uses, e.g. for portable devices driven by machines or engines
-
- 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
- F01N9/00—Electrical control of exhaust gas treating apparatus
- F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
-
- 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
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/02—Exhaust treating devices having provisions not otherwise provided for for cooling the device
- F01N2260/022—Exhaust treating devices having provisions not otherwise provided for for cooling the device using air
-
- 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
- F01N2270/00—Mixing air with exhaust gases
- F01N2270/02—Mixing air with exhaust gases for cooling exhaust gases or the apparatus
-
- 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 discloses a kind of DPF carrier protective device and method, DPF carrier protective device includes: after-treatment system, booster, bypass pipe, valve；Wherein, after-treatment system includes: DOC system, DPF system, SCR system；For bypass pipe between booster and after-treatment system, the end of bypass pipe is connected with high pressure gas bag；Valve is used to control the on-off of bypass pipe.Above-mentioned DPF carrier protective device; in regenerative process; when the temperature of DPF carrier inside steeply rises; valve is opened rapidly; it flows into the gas in high pressure gas bag in DPF carrier, to increase the gas flow inside DPF, and the amount of heat that regeneration generates inside DPF is discharged rapidly; and then the thermal shock that DPF carrier is subject to is reduced, achieve the purpose that protect DPF system.Therefore, how DPF carrier protective device proposed by the present invention can avoid DPF carrier from bearing violent thermal shock, guarantee the normal work of DPF system, solve the problems, such as the field at this stage.
Description
Technical field
The present invention relates to DPF carriers to protect field, more specifically to a kind of DPF carrier protective device and method.
Background technique
With the raising of environmental protection standard, six diesel product of Europe has installed DPF after-treatment system additional.Carbon inside DPF
After carrying capacity reaches a certain level, diesel engine can be burnt up the carbon particle inside DPF by initiative regeneration.
But in above process, the inside of DPF carrier can generate a large amount of heat, temperature would generally reach 600 DEG C with
On.If this process engine stops suddenly, or is in the idling stage for a long time；Or know since driver lacks DPF maintenance
Know, faulty operation, the phenomenon that electricity parking or long-time idling occurs under engine, lead to the gas flow meeting of DPF carrier inside
It reduces suddenly, even zero, so that a large amount of thermal energy that regenerative process generates can not be discharged in time；And vehicle is played again in engine
Afterwards, the temperature of DPF carrier inside can steeply rise, and DPF carrier is caused to bear violent thermal shock, cause DPF carrier cracking, become
Shape, ablation, which are even burnt, melts, influence the carbon particle arresting efficiency of DPF system, the serious curtailment service life of DPF system.
Therefore, how to avoid DPF carrier from bearing violent thermal shock, guarantee the normal work of DPF system, at this stage should be
Field problem urgently to be resolved.
Summary of the invention
In view of this, how the device can avoid the purpose of the present invention is to provide a kind of DPF carrier protective device
DPF carrier bears violent thermal shock, guarantees the normal work of DPF system, solves the problems, such as the field at this stage.The present invention
Purpose also reside in a kind of DPF carrier guard method be provided, which is applied to above-mentioned DPF carrier and protects
Therefore how device can avoid DPF carrier from bearing violent thermal shock, guarantee the normal work of DPF system.
A kind of DPF carrier protective device, comprising:
Booster；
After-treatment system, the after-treatment system include: DOC system, DPF system, SCR system；
Bypass pipe, the bypass pipe is between the booster and the after-treatment system, the end of the bypass pipe
It is connected with high pressure gas bag；
Valve, the valve is for controlling the bypass pipe on-off.
Preferably, the DPF carrier protective device, the valve are electric control valve.
Preferably, the DPF carrier protective device, the valve are controlled by ECU controller.
Preferably, the DPF carrier protective device, the high pressure gas bag are vehicle high-pressure air source.
A kind of DPF carrier guard method, the DPF carrier guard method are applied to DPF carrier described in any bar as above
Protective device；Bypass pipe is set between booster and after-treatment system, the end of the bypass pipe is connected with high pressure gas bag, and
The bypass pipe is equipped with valve.
Preferably, the DPF carrier guard method, the valve are electric control valve.
Preferably, the DPF carrier guard method, the valve are controlled by ECU controller.
Preferably, the DPF carrier guard method, the high pressure gas bag are vehicle high-pressure air source.
Preferably, the DPF carrier guard method, when engine stops working suddenly, the ECU controller control
The valve is opened.
Preferably, the DPF carrier guard method, when the engine idle time being greater than 1min, the ECU control
Device processed controls the valve and opens.
DPF carrier protective device proposed by the present invention, comprising: after-treatment system, booster, bypass pipe, valve；Wherein,
After-treatment system includes: DOC system, DPF system, SCR system；Bypass pipe is between booster and after-treatment system, bypass
The end of pipe is connected with high pressure gas bag；Valve is used to control the on-off of bypass pipe.Above-mentioned DPF carrier protective device, regenerative process
In, when the temperature of DPF carrier inside steeply rises, valve is opened rapidly, and the gas in high pressure gas bag is made to flow into DPF carrier
It is interior, to increase the gas flow inside DPF, and the amount of heat that regeneration generates inside DPF is discharged rapidly, and then reduce DPF
The thermal shock that carrier is subject to achievees the purpose that protect DPF system.Therefore, DPF carrier protective device proposed by the present invention, can
How to avoid DPF carrier from bearing violent thermal shock, guarantee the normal work of DPF system, solves the difficulty in the field at this stage
Topic.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the schematic diagram of DPF carrier protective device in the specific embodiment of the invention；
Fig. 2 is the schematic diagram of DPF carrier protective device work in the specific embodiment of the invention.
Specific embodiment
The core of present embodiment is to provide a kind of DPF carrier protective device, and how which can avoid DPF
Carrier bears violent thermal shock, guarantees the normal work of DPF system, solves the problems, such as the field at this stage.
Hereinafter, being illustrated referring to attached drawing to embodiment.In addition, embodiments illustrated below is not to recorded in claim
Summary of the invention rise any restriction effect.In addition, the full content of composition represented by following example is not limited to as right
Necessary to the solution invented documented by it is required that.
The DPF carrier protective device that present embodiment provides, referring to Figure 1-2；It include: after-treatment system, pressurization
Device, bypass pipe, valve；Wherein, after-treatment system includes: DOC system, DPF system, SCR system；Bypass pipe be located at booster and
Between after-treatment system, the end of bypass pipe is connected with high pressure gas bag；Valve is used to control the on-off of bypass pipe.Above-mentioned DPF is carried
Body protective device, in regenerative process, when the temperature of DPF carrier inside steeply rises, valve is opened rapidly, is made in high pressure gas bag
Gas flow into DPF carrier, to increase the gas flow inside DPF, and keep the amount of heat that regeneration generates inside DPF rapid
Discharge, and then the thermal shock that DPF carrier is subject to is reduced, achieve the purpose that protect DPF system.Therefore, DPF proposed by the present invention is carried
How body protective device can avoid DPF carrier from bearing violent thermal shock, guarantee the normal work of DPF system, solve existing
The problem in the stage field.
The DPF carrier protective device that present embodiment provides, valve can be electric control valve, which can be more
Accurately the work of valve is controlled, when controller detects that DPF carries intracorporal temperature abruptly increase, then control valve is beaten
It opens, enters the gas in high pressure gas bag in DPF carrier by by-passing valve, to increase the gas flow inside DPF, and make DPF
Internal heat is discharged rapidly, and then reduces the thermal shock that DPF carrier is subject to, and plays a protective role to DPF carrier.
Further, valve can be controlled by ECU controller, ECU, that is, electronic control unit, also known as car running computer or
Vehicle-mounted computer etc. is automobile specified microcomputerized controller；In present embodiment, using ECU controller to the work of valve into
Row is automatic to be monitored and controlled, and the effect being precisely controlled can either be played, and will not increase control unit newly, without doing to original structure
Larger transformation can be realized.
The DPF carrier protective device that present embodiment provides, high pressure gas bag can be vehicle high-pressure air source, similarly,
The setting can equally play the effect of simplified structure design, do not need to increase additional hardware and structure, can play preferably
Effect.
Present embodiment also provides a kind of DPF carrier guard method, and DPF carrier guard method is applied to above-mentioned
DPF carrier protective device；This method adds bypass pipe between booster and after-treatment system, and the end of bypass pipe is connected with
High pressure gas bag, and bypass pipe is equipped with valve.
The DPF carrier guard method that present embodiment provides, valve can be electric control valve, which can be more
Accurately the work of valve is controlled, when controller detects that DPF carries intracorporal temperature abruptly increase, then control valve is beaten
It opens, enters the gas in high pressure gas bag in DPF carrier by by-passing valve, to increase the gas flow inside DPF, and make DPF
Internal heat is discharged rapidly, and then reduces the thermal shock that DPF carrier is subject to, and plays a protective role to DPF carrier.
Further, valve can be controlled by ECU controller, ECU, that is, electronic control unit, also known as car running computer or
Vehicle-mounted computer etc. is automobile specified microcomputerized controller；In present embodiment, using ECU controller to the work of valve into
Row is automatic to be monitored and controlled, and the effect being precisely controlled can either be played, and will not increase control unit newly, without doing to original structure
Larger transformation can be realized.
The DPF carrier guard method that present embodiment provides, high pressure gas bag can be vehicle high-pressure air source, similarly,
The setting can equally play the effect of simplified structure design, do not need to increase additional hardware and structure, can play preferably
Effect.
The DPF carrier guard method that present embodiment provides, when engine stops working suddenly, ECU controller
Control valve is opened；At this point, the gas in high pressure gas bag can be made to quickly enter DPF carrier, and then increase gas in DPF carrier
Flow so that the amount of heat that regeneration generates quickly is discharged, and then reduces DPF and carries intracorporal temperature, to play to DPF carrier
Protection, avoids DPF carrier from deforming because of high temperature.
The DPF carrier guard method that present embodiment provides, when the engine idle time being greater than 1min,
ECU controller control valve door is opened.Engine is in the idling stage for a long time, will lead to the gas flow meeting of DPF carrier inside
It reduces suddenly, even zero, so that a large amount of thermal energy that regenerative process generates can not be discharged in time, eventually leads to DPF carrier receiving
Violent thermal shock causes DPF carrier cracking, deformation, ablation even to burn and melts.Therefore, it is in idling shape for a long time in engine
When state, the impaired risk of DPF carrier is larger, therefore when the engine idle time being greater than 1min, ECU controller, that is, control valve
Door is opened, and the gas in high pressure gas bag can be made to quickly enter DPF carrier rapidly, and then increase the flow of gas in DPF carrier,
So that the amount of heat that regeneration generates quickly is discharged, and then reduces DPF and carries intracorporal temperature, to play protection to DPF carrier.
ECU controller carries out enabled judgement by engine operation mode, monitors T15 state, engine speed and throttle
Change rate, to control electric control valve switch.Engine cut-off (T15 state is 0) during initiative regeneration, or at long-time
In the case where idling, ECU controller controls electric control valve and opens rapidly, will be in DPF to increase DPF internal gas flow
Portion's heat is blown out rapidly, and achievees the purpose that protect DPF carrier.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of DPF carrier protective device characterized by comprising
Booster；
After-treatment system, the after-treatment system include: DOC system, DPF system, SCR system；
Bypass pipe, between the booster and the after-treatment system, the end of the bypass pipe connects the bypass pipe
There is high pressure gas bag；
Valve, the valve is for controlling the bypass pipe on-off.
2. DPF carrier protective device according to claim 1, which is characterized in that the valve is electric control valve.
3. DPF carrier protective device according to claim 1, which is characterized in that the valve passes through the control of ECU controller
System.
4. DPF carrier protective device according to claim 1, which is characterized in that the high pressure gas bag is vehicle high pressure gas
Source.
5. a kind of DPF carrier guard method, which is characterized in that the DPF carrier guard method is applied to claim 1-4 such as and appoints
DPF carrier protective device described in one；Bypass pipe, the end of the bypass pipe are set between booster and after-treatment system
It is connected with high pressure gas bag, and the bypass pipe is equipped with valve.
6. DPF carrier guard method according to claim 5, which is characterized in that the valve is electric control valve.
7. DPF carrier guard method according to claim 5, which is characterized in that the valve passes through the control of ECU controller
System.
8. DPF carrier guard method according to claim 5, which is characterized in that the high pressure gas bag is vehicle high pressure gas
Source.
9. DPF carrier guard method according to claim 7, which is characterized in that when engine stops working suddenly, institute
It states ECU controller and controls the valve opening.
10. DPF carrier guard method according to claim 7, which is characterized in that be greater than when the engine idle time
When 1min, the ECU controller controls the valve and opens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811155845.2A CN109339919A (en) | 2018-09-30 | 2018-09-30 | A kind of DPF carrier protective device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811155845.2A CN109339919A (en) | 2018-09-30 | 2018-09-30 | A kind of DPF carrier protective device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109339919A true CN109339919A (en) | 2019-02-15 |
Family
ID=65308322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811155845.2A Pending CN109339919A (en) | 2018-09-30 | 2018-09-30 | A kind of DPF carrier protective device and method |
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| Country | Link |
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| CN (1) | CN109339919A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159403A (en) * | 2019-07-16 | 2019-08-23 | 潍柴动力股份有限公司 | Prevent the method, apparatus and diesel vehicle that dpf regeneration is burnt |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0494409A (en) * | 1990-08-08 | 1992-03-26 | Matsushita Electric Ind Co Ltd | Filter regenerating device for internal combustion engine |
| US20070044454A1 (en) * | 2005-08-30 | 2007-03-01 | Bonadies Joseph V | Method and apparatus for controlling regeneration temperature in a diesel particulate trap |
| US20090139217A1 (en) * | 2007-12-03 | 2009-06-04 | International Truck Intellectual Property Company, Llc | Exhaust gas temperature reduction device for aftertreatment devices |
| US20100043407A1 (en) * | 2006-12-05 | 2010-02-25 | Mack Trucks, Inc. | Engine with exhaust cooling and method |
| WO2011114381A1 (en) * | 2010-03-18 | 2011-09-22 | トヨタ自動車株式会社 | Exhaust gas evacuation device for internal combustion engine |
| CN105422228A (en) * | 2015-11-26 | 2016-03-23 | 潍柴动力股份有限公司 | Method and system for preventing DPF from being burnt out |
-
2018
- 2018-09-30 CN CN201811155845.2A patent/CN109339919A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0494409A (en) * | 1990-08-08 | 1992-03-26 | Matsushita Electric Ind Co Ltd | Filter regenerating device for internal combustion engine |
| US20070044454A1 (en) * | 2005-08-30 | 2007-03-01 | Bonadies Joseph V | Method and apparatus for controlling regeneration temperature in a diesel particulate trap |
| US20100043407A1 (en) * | 2006-12-05 | 2010-02-25 | Mack Trucks, Inc. | Engine with exhaust cooling and method |
| US20090139217A1 (en) * | 2007-12-03 | 2009-06-04 | International Truck Intellectual Property Company, Llc | Exhaust gas temperature reduction device for aftertreatment devices |
| WO2011114381A1 (en) * | 2010-03-18 | 2011-09-22 | トヨタ自動車株式会社 | Exhaust gas evacuation device for internal combustion engine |
| CN105422228A (en) * | 2015-11-26 | 2016-03-23 | 潍柴动力股份有限公司 | Method and system for preventing DPF from being burnt out |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159403A (en) * | 2019-07-16 | 2019-08-23 | 潍柴动力股份有限公司 | Prevent the method, apparatus and diesel vehicle that dpf regeneration is burnt |
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Application publication date: 20190215 |
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