CN105422228B - Prevent the method and system that DPF burns - Google Patents
Prevent the method and system that DPF burns Download PDFInfo
- Publication number
- CN105422228B CN105422228B CN201510843785.3A CN201510843785A CN105422228B CN 105422228 B CN105422228 B CN 105422228B CN 201510843785 A CN201510843785 A CN 201510843785A CN 105422228 B CN105422228 B CN 105422228B
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- Prior art keywords
- dpf
- regeneration operation
- butterfly valve
- auxiliary braking
- dpf regeneration
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Classifications
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- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/04—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits
- F02D9/06—Exhaust brakes
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
The invention provides a kind of method and system for preventing DPF from burning, this method includes：When receiving the request of butterfly valve auxiliary braking, judge whether to carry out dpf regeneration operation；When judging to carry out dpf regeneration operation, stop dpf regeneration operation；After dpf regeneration operation stopping, activation butterfly valve carries out auxiliary braking.Using the method and system provided by the invention for preventing DPF from burning, it can avoid activating butterfly valve progress auxiliary braking in operation is regenerated, avoid thus caused DPF and burn.
Description
Technical field
The present invention relates to technical field of engines, more particularly to a kind of method and system for preventing that DPF from burning.
Background technology
To meet the emission request of Europe six, it is necessary to using DPF (Diesel Particulate Filter, particle trap)
To reduce PM.Need to configure butterfly valve auxiliary braking for commercial vehicular engine, to meet brake request.When DPF soot amount reaches
, it is necessary to be regenerated after to limit value.During the major way of dpf regeneration, pass through DOC (the diesel oxidation before DPF
Catalyst, hydrogen oxide catalyst converter) place's injection fuel oil so that delivery temperature raises, and then causes the carbon distribution combustion being attached on DPF
Burn.In such regeneration operation, ignition temperature is very high in DPF, if now receiving the butterfly valve auxiliary braking request of driver
And braked, it is easy to cause to burn out DPF.
The content of the invention
It is an object of the invention to avoid DPF caused by regenerating operation from burning.
The invention provides a kind of method for preventing DPF from burning, including：
When receiving the request of butterfly valve auxiliary braking, judge whether to carry out dpf regeneration operation；
When judging to carry out dpf regeneration operation, stop dpf regeneration operation；
After dpf regeneration operation stopping, activation butterfly valve carries out auxiliary braking.
Further, described after dpf regeneration operation stopping, activation butterfly valve carries out auxiliary braking and specifically included：
After DPF protective conditions are reached after dpf regeneration operation stops, activation butterfly valve carries out auxiliary braking；
The DPF protective conditions include：Temperature is reduced to below the first preset temperature before DOC；And/or temperature drops before DPF
As little as below the second preset temperature；And/or extraction flow is reduced to below preset flow.
Further, described after DPF protective conditions are reached after dpf regeneration operation stops, activation butterfly valve is aided in
Braking specifically includes：
After dpf regeneration operation stopping, whether reaching DPF protective conditions according to setting cycle detection, reached detecting
Butterfly valve is activated after to DPF protective conditions and carries out auxiliary braking.
Further, described after DPF protective conditions are reached after dpf regeneration operation stops, activation butterfly valve is aided in
Braking, is specifically included：
After the preset time period after dpf regeneration operation stopping, activation butterfly valve carries out auxiliary braking.
Further, methods described also includes：
After the request of butterfly valve auxiliary braking releases, recover dpf regeneration operation.
Second aspect, the invention provides a kind of system for preventing DPF from burning, including：
Judge module, for when receiving the request of butterfly valve auxiliary braking, judging whether to carry out dpf regeneration operation；
Regeneration control module, for when judge module judges to carry out dpf regeneration operation, stopping dpf regeneration operation；
Active module is braked, for after dpf regeneration operation stopping, activation butterfly valve to carry out auxiliary braking.
Further, the braking active module is specifically used for reaching DPF protective conditions after dpf regeneration operation stops
Afterwards, activate butterfly valve and carry out auxiliary braking；
The DPF protective conditions include：Temperature is reduced to below the first preset temperature before DOC；And/or temperature drops before DPF
As little as below the second preset temperature；And/or extraction flow is reduced to below preset flow.
Further, in addition to：
Detection module, for after dpf regeneration operation stopping, whether reaching DPF ceilings according to setting cycle detection
Part.
Further, it is described braking active module be specifically used for dpf regeneration operation stopping after preset time period it
Afterwards, activate butterfly valve and carry out auxiliary braking.
Further, the regeneration control module is additionally operable to after the request of butterfly valve auxiliary braking releases, and is recovered dpf regeneration and is made
Industry.
In the method and system provided by the invention for preventing DPF from burning, when receiving the request of butterfly valve auxiliary braking, judge
Whether dpf regeneration operation is carried out；When being judged as YES, stop dpf regeneration operation；After dpf regeneration operation stopping, swashing
Butterfly valve living carries out auxiliary braking.It can thus avoid activating butterfly valve progress auxiliary braking in operation is regenerated, avoid thus
Caused DPF burns.
Brief description of the drawings
Fig. 1 is a kind of schematic flow sheet for the method for preventing DPF from burning provided by the invention；
Fig. 2 is the schematic flow sheet that injection process is terminated in a kind of method for preventing DPF from burning provided by the invention；
Fig. 3 is a kind of structural representation for the system for preventing DPF from burning provided by the invention.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is further described.Following examples are only
For clearly illustrating technical scheme, and can not be limited the scope of the invention with this.
The invention provides a kind of method for preventing DPF from burning, referring to Fig. 1, this method includes：
Step S11, when receiving the request of butterfly valve auxiliary braking, judge whether to carry out dpf regeneration operation；
Step S12, when judging to carry out dpf regeneration operation, stop dpf regeneration operation；
Step S13, after dpf regeneration operation stopping, activation butterfly valve carries out auxiliary braking.
In the method provided by the invention for preventing DPF from burning, when receiving the request of butterfly valve auxiliary braking, judge whether just
Carrying out dpf regeneration operation；And when being judged as YES, stop dpf regeneration operation；After dpf regeneration operation stopping, butterfly is activated
Valve carries out auxiliary braking.It can thus avoid activating butterfly valve progress auxiliary braking in operation is regenerated, thus avoiding causes
DPF burn.
Here dpf regeneration operation can specifically refer to the injection process in dpf regeneration, specifically, in step S11,
It can first determine whether currently whether be under dpf regeneration pattern, if it is, further determine whether just in oil spout, if it is,
In step s 12, the injection process is terminated.The idiographic flow in the stage may refer to Fig. 2, including：
Step S21, receive the request of butterfly valve auxiliary braking；
Whether step S22, judgement are currently in dpf regeneration pattern；If so, then turn to step S23；If it is not, then terminate to flow
Journey；
Step S23, judge whether just in oil spout, if then turning to step S24,；If it is not, then terminate flow；
Step S24, terminate oil spout operation.
In the specific implementation, can be specifically included in above-mentioned step S13：
Step S13 ', after DPF protective conditions are reached after dpf regeneration operation stops, activation butterfly valve carries out auxiliary braking；
The DPF protective conditions include：Temperature is reduced to below the first preset temperature before DOC；And/or temperature drops before DPF
As little as below the second preset temperature；And/or extraction flow is reduced to below preset flow.
In general, after dpf regeneration operation (process for generally referring to spray fuel oil) stops, temperature still may in DPF
The high temperature of comparison is maintained within a certain period of time, if now activating butterfly valve carries out auxiliary braking, may still result in DPF's
Burn.By above-mentioned step S13, such case can be effectively avoided, preferably protects DPF.
In the specific implementation, above-mentioned step S13 ' can be implemented in several ways, such as can be in dpf regeneration operation
After stopping, whether reaching DPF protective conditions according to the cycle detection of setting, and when detecting DPF protective conditions, activate butterfly
Valve carries out auxiliary braking.It is more timely during the advantages of this mode, but need repeatedly to obtain corresponding parameter information and perform
Corresponding deterministic process, relatively waste of resource (mainly processor resource etc.).
Another implementation steps S13 ' mode can be：After the preset time period after dpf regeneration operation stopping,
Activate butterfly valve and carry out auxiliary braking.
This sample loading mode is simply to be easily achieved a little, can reduce the consumption to resource.
In the specific implementation, after step s 13, above-mentioned method can also include
After the request of butterfly valve auxiliary braking releases, recover dpf regeneration operation.
In the specific implementation, the process for auxiliary braking being carried out in above-mentioned step S13 activation butterfly valves may also suffer from it
The restriction of his condition, than being less than certain preset value if desired for the pressure for meeting inlet manifold first, it can just enter line activating butterfly
Valve carries out the operation of auxiliary braking.These are not the contents of institute's critical concern of the present invention, are no longer described in detail herein.
Conceived based on identical, present invention also offers a kind of system for preventing DPF from burning, and can be used for performing above-mentioned
Method described in one, referring to Fig. 3, the system can include：
Judge module 31, for when receiving the request of butterfly valve auxiliary braking, judging whether to carry out dpf regeneration work
Industry；
Regeneration control module 32, for when judge module judges to carry out dpf regeneration operation, stopping dpf regeneration and making
Industry；
Active module 33 is braked, for after dpf regeneration operation stopping, activation butterfly valve to carry out auxiliary braking.
Further, braking active module 33 can be specifically used for reaching DPF ceilings after dpf regeneration operation stops
After part, activation butterfly valve carries out auxiliary braking；
The DPF protective conditions include：Temperature is reduced to below the first preset temperature before DOC；And/or temperature drops before DPF
As little as below the second preset temperature；And/or extraction flow is reduced to below preset flow.
Further, the system can also be included not shown in figure：
Detection module 34, for after dpf regeneration operation stopping, whether reaching DPF protections according to setting cycle detection
Condition.Now, braking active module 33 here can determine whether to reach DPF protections according to the testing result of detection module 34
Condition.
Further, the preset time period that active module 33 can be specifically used for after dpf regeneration operation stopping is braked
Afterwards, activate butterfly valve and carry out auxiliary braking.
Further, the regeneration control module 32 is additionally operable to after the request of butterfly valve auxiliary braking releases, and recovers dpf regeneration
Operation.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (10)
- A kind of 1. method for preventing particle trap DPF from burning, it is characterised in that including：When receiving the request of butterfly valve auxiliary braking, judge whether to carry out dpf regeneration operation；When judging to carry out dpf regeneration operation, stop dpf regeneration operation；After dpf regeneration operation stopping, activation butterfly valve carries out auxiliary braking.
- 2. the method as described in claim 1, it is characterised in that described after dpf regeneration operation stopping, activation butterfly valve is carried out Auxiliary braking specifically includes：After DPF protective conditions are reached after dpf regeneration operation stops, activation butterfly valve carries out auxiliary braking；The DPF protective conditions include：Temperature is reduced to below the first preset temperature before DOC；And/or temperature is reduced to before DPF Below second preset temperature；And/or extraction flow is reduced to below preset flow.
- 3. method as claimed in claim 2, it is characterised in that described to reach DPF ceilings after dpf regeneration operation stops After part, activation butterfly valve carries out auxiliary braking and specifically included：After dpf regeneration operation stopping, whether reaching DPF protective conditions according to setting cycle detection, DPF is reached in detection Butterfly valve is activated after protective condition and carries out auxiliary braking.
- 4. method as claimed in claim 2, it is characterised in that described to reach DPF ceilings after dpf regeneration operation stops After part, activation butterfly valve carries out auxiliary braking, specifically includes：After the preset time period after dpf regeneration operation stopping, activation butterfly valve carries out auxiliary braking.
- 5. the method as described in claim 1, it is characterised in that methods described also includes：After the request of butterfly valve auxiliary braking releases, recover dpf regeneration operation.
- A kind of 6. system for preventing particle trap DPF from burning, it is characterised in that including：Judge module, for when receiving the request of butterfly valve auxiliary braking, judging whether to carry out dpf regeneration operation；Regeneration control module, for when judge module judges to carry out dpf regeneration operation, stopping dpf regeneration operation；Active module is braked, for after dpf regeneration operation stopping, activation butterfly valve to carry out auxiliary braking.
- 7. system as claimed in claim 6, it is characterised in that the braking active module is specifically used in dpf regeneration operation After reaching DPF protective conditions after stopping, activation butterfly valve carries out auxiliary braking；The DPF protective conditions include：Temperature is reduced to below the first preset temperature before DOC；And/or temperature is reduced to before DPF Below second preset temperature；And/or extraction flow is reduced to below preset flow.
- 8. system as claimed in claim 7, it is characterised in that also include：Detection module, for after dpf regeneration operation stopping, whether reaching DPF protective conditions according to setting cycle detection.
- 9. system as claimed in claim 7, it is characterised in that the braking active module is specifically used in dpf regeneration operation After preset time period after stopping, activation butterfly valve carries out auxiliary braking.
- 10. the system as described in claim any one of 7-9, it is characterised in that the regeneration control module is additionally operable in butterfly valve After auxiliary braking request releases, recover dpf regeneration operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510843785.3A CN105422228B (en) | 2015-11-26 | 2015-11-26 | Prevent the method and system that DPF burns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510843785.3A CN105422228B (en) | 2015-11-26 | 2015-11-26 | Prevent the method and system that DPF burns |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105422228A CN105422228A (en) | 2016-03-23 |
| CN105422228B true CN105422228B (en) | 2018-04-03 |
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ID=55500710
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510843785.3A Active CN105422228B (en) | 2015-11-26 | 2015-11-26 | Prevent the method and system that DPF burns |
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| CN (1) | CN105422228B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184873B (en) * | 2018-09-29 | 2020-06-02 | 潍柴动力股份有限公司 | DPF protection method and device |
| CN109339919A (en) * | 2018-09-30 | 2019-02-15 | 潍柴动力股份有限公司 | A kind of DPF carrier protective device and method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007154772A (en) * | 2005-12-06 | 2007-06-21 | Mitsubishi Fuso Truck & Bus Corp | Control device for internal combustion engine |
| JP4140640B2 (en) * | 2006-06-12 | 2008-08-27 | いすゞ自動車株式会社 | Exhaust gas purification method and exhaust gas purification system |
| JP4100451B1 (en) * | 2007-03-02 | 2008-06-11 | いすゞ自動車株式会社 | Exhaust gas purification method and exhaust gas purification system |
| CN101691847A (en) * | 2009-02-04 | 2010-04-07 | 曼商用车辆奥地利股份公司 | Method for regenerating particle filter arranged in exhaust line |
| CN102220907B (en) * | 2010-04-19 | 2015-03-11 | 上海尤顺汽车部件有限公司 | Engine combined brake control method |
| JP5440385B2 (en) * | 2010-05-25 | 2014-03-12 | いすゞ自動車株式会社 | Exhaust gas purification system |
| JP5573391B2 (en) * | 2010-06-11 | 2014-08-20 | いすゞ自動車株式会社 | Exhaust gas purification system |
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| CN105422228A (en) | 2016-03-23 |
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