CN114776420B - DPF regeneration control method and system and engineering equipment - Google Patents
DPF regeneration control method and system and engineering equipment Download PDFInfo
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- CN114776420B CN114776420B CN202210582846.5A CN202210582846A CN114776420B CN 114776420 B CN114776420 B CN 114776420B CN 202210582846 A CN202210582846 A CN 202210582846A CN 114776420 B CN114776420 B CN 114776420B
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- 230000008929 regeneration Effects 0.000 title claims abstract description 850
- 238000011069 regeneration method Methods 0.000 title claims abstract description 850
- 238000000034 method Methods 0.000 title claims abstract description 63
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 123
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 123
- 230000002035 prolonged effect Effects 0.000 claims description 22
- 230000000694 effects Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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
- 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
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/08—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for heavy duty applications, e.g. trucks, buses, tractors, locomotives
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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 DPF regeneration control method and system and engineering equipment, wherein the DPF regeneration control method comprises the following steps: acquiring the data information regenerated last time; when the data information meets the preset conditions, adjusting the target temperature of the current regeneration, the maximum regeneration time and the limit value of the carbon load which exits the regeneration based on the data information, so as to meet the regeneration completion conditions; and carrying out DPF regeneration according to the adjusted target temperature, the maximum regeneration time and the carbon load limit value of exiting regeneration. According to the method and the device, the last regenerated data are acquired, the working condition of the engineering equipment at the moment can be determined according to the acquired last regenerated data information, so that the regeneration can be completed smoothly according to the last regenerated performance under the working condition that the engineering equipment cannot be completed, the target temperature, the longest regeneration time and the carbon load limit value of the regeneration can be adjusted in a self-adaptive mode, and frequent regeneration is avoided.
Description
Technical Field
The invention relates to the technical field of post-treatment of engineering equipment, in particular to a DPF regeneration control method and system and engineering equipment.
Background
At present, the common regeneration mode of the DPF (diesel particulate filter) of the existing national six-diesel engine system is mainly an automatic active regeneration mode, namely, the regeneration function is realized through software control in the driving process of a user. Specifically, when the engine receives a DPF active regeneration command, the engine starts to perform regeneration. However, certain temperature and carbon loading requirements need to be met to perform a complete regeneration. When the engineering equipment runs on the urban road or the working property needs to run at a constant idle speed or the vehicle speed is particularly low, the condition of active regeneration completion is difficult to meet, so that the DPF regeneration cannot be completed once, then the DPF regeneration can enter the next regeneration soon, and the DPF regeneration is still not completed, thus a vicious circle is trapped, frequent regeneration phenomenon is caused, and the post-treatment is damaged. In the prior art, for DPF regeneration control, if the running regeneration is not completed in the set times, directly stopping the running regeneration, waiting for the meeting of the parking regeneration condition, directly performing the parking regeneration, and completing the regeneration through the parking regeneration; if it is recognized that the vehicle regeneration is not completed within the set number of times, the engine speed is increased or the parking regeneration condition is satisfied according to the set condition. Although it can solve the problem of frequent regeneration to some extent, a new problem is generated. Under the working condition that the running regeneration cannot be completed at low temperature and low flow, the accuracy of the carbon load model is poor, the time point of parking regeneration is difficult to accurately identify, and DPF blockage is easy to cause; in addition, the method for improving the rotation speed of the engine can also disturb the work of a driver and influence the normal work of the driver.
Therefore, how to provide a scheme that can adaptively adjust the target temperature and the regeneration completion condition of the regeneration according to the previous regeneration performance, so that the regeneration can be successfully completed, and avoid frequent regeneration becomes a current urgent problem.
Disclosure of Invention
To solve the above-mentioned problems, a first aspect of the present invention proposes a DPF regeneration control method.
The second aspect of the present invention also proposes a DPF regeneration control system.
A third aspect of the present invention also proposes a readable storage medium.
The fourth aspect of the invention also proposes an engineering device.
In view of this, a first aspect of the present invention proposes a DPF regeneration control method including: acquiring the data information regenerated last time; when the data information meets the preset conditions, adjusting the target temperature of the current regeneration, the maximum regeneration time and the limit value of the carbon load which exits the regeneration based on the data information, so as to meet the regeneration completion conditions; and carrying out DPF regeneration according to the adjusted target temperature, the maximum regeneration time and the carbon load limit value of exiting regeneration.
According to the DPF regeneration control method provided by the invention, the last regeneration data is acquired so as to adjust the complete condition of the regeneration according to the last regeneration data, so that the regeneration can be successfully completed; and then determining the acquired data information of the last regeneration to determine whether the data information meets preset conditions, modulating the target temperature of the current regeneration, the maximum regeneration time and the carbon load limit value of the regeneration which is withdrawn from the current regeneration based on the acquired data information of the last regeneration under the condition that the preset conditions are met, enabling the data information to reach the level that the regeneration can be successfully completed, and entering the DPF regeneration of the current time based on the adjusted target temperature, the maximum regeneration time and the carbon load limit value of the regeneration which is withdrawn from the current regeneration. According to the method and the device, the last regenerated data are acquired, the working condition of the engineering equipment at the moment can be determined according to the acquired last regenerated data information, the speed of the engineering equipment at the moment is mastered, for example, the engineering equipment is in idle running at the moment, so that the target temperature of the regeneration and the regeneration completion condition, namely the maximum regeneration time and the carbon load limit value of the regeneration exit can be adaptively adjusted according to the performance of the last regeneration under the working condition that the engineering equipment cannot complete the running regeneration, the regeneration can be successfully completed, and frequent regeneration is avoided.
In addition, the DPF regeneration control method in the above technical scheme provided by the invention may further have the following additional technical features:
in the above technical solution, the step of acquiring the data information regenerated last time specifically includes: and acquiring the exiting time of the last regeneration, the carbon loading at the exiting time of the last regeneration, the highest temperature and the lowest temperature of the DOC outlet, and the time difference between the last regeneration and the last regeneration.
In the technical scheme, the time difference between the last regeneration and the last regeneration, the highest temperature and the lowest temperature of the DOC outlet and the exit time of the last regeneration are acquired, so that whether the last regeneration is completed or not is determined according to the time difference between the last regeneration and the last regeneration; the maximum temperature and the minimum temperature of the DOC outlet are obtained so as to facilitate the target temperature adjustment of the next regeneration according to the temperature of the last unfinished regeneration; the method is characterized in that the method comprises the steps of obtaining the exiting time of the last regeneration and the carbon load when the last regeneration exits, so that whether the last regeneration is completed or not is conveniently determined, and when the last regeneration is not completed normally, the target temperature of the regeneration and the regeneration completion condition are adaptively adjusted, so that the next regeneration can be completed smoothly, and frequent regeneration is avoided.
In the above-described aspect, the DPF regeneration control method further includes: and when the difference between the exiting time of the current regeneration and the exiting time of the last regeneration is smaller than a first preset threshold, the carbon loading when the last regeneration exits is larger than a second preset threshold, and the time difference between the last regeneration exits and the previous regeneration is larger than a third preset threshold, determining that the data information meets the preset condition.
In the technical scheme, when the difference between the exiting time of the current regeneration and the previous regeneration is smaller than a first preset threshold, the carbon load when the previous regeneration exits is larger than a second preset threshold, and the time difference between the previous regeneration and the previous regeneration when the previous regeneration exits is larger than a third preset threshold, the previous regeneration is proved to be incomplete, the parameter of the current regeneration is conveniently adjusted according to the data information of the previous regeneration, namely, the target temperature of the current regeneration is adjusted to be larger than the lowest temperature of the previous regeneration and smaller than the highest temperature, the limit value of the carbon load when the current regeneration exits is adjusted to be smaller than the carbon load when the previous regeneration exits, and the time length of the current regeneration is prolonged to be the preset time length, so that the condition of the completion of the regeneration is met, the regeneration can be normally completed when the regeneration is performed according to the adjusted parameter, and the condition of frequent repeated regeneration is avoided.
In the above technical solution, the step of obtaining the data information regenerated last time further includes: and acquiring the exiting time of the last regeneration, the carbon loading at the exiting time of the last regeneration, the highest temperature and the lowest temperature of the DOC outlet, and the mileage difference between the last regeneration and the last regeneration.
In the technical scheme, the mileage difference from the previous regeneration, the highest temperature and the lowest temperature of the DOC outlet of the previous regeneration and the exit time of the previous regeneration are acquired, so that whether the previous regeneration is completed or not is determined according to the mileage difference from the previous regeneration; the maximum temperature and the minimum temperature of the DOC outlet are obtained so as to facilitate the target temperature adjustment of the next regeneration according to the temperature of the last unfinished regeneration; the method is characterized in that the method comprises the steps of obtaining the exiting time of the last regeneration and the carbon load when the last regeneration exits, so that whether the last regeneration is completed or not is conveniently determined, and when the last regeneration is not completed normally, the target temperature of the regeneration and the regeneration completion condition are adaptively adjusted, so that the next regeneration can be completed smoothly, and frequent regeneration is avoided.
Wherein the third preset threshold and the fourth preset threshold are 0.
In any of the above aspects, the DPF regeneration control method further includes: and when the difference between the exiting time of the current regeneration and the exiting time of the last regeneration is smaller than a first preset threshold, the carbon loading when the last regeneration exits is larger than a second preset threshold, and the mileage difference between the last regeneration and the last regeneration is larger than a fourth preset threshold, determining that the data information meets the preset condition.
In the technical scheme, when the difference between the current regeneration and the exiting time of the last regeneration is smaller than a first preset threshold, the carbon load when the last regeneration exits is larger than a second preset threshold, and the mileage difference between the last regeneration and the previous regeneration when the last regeneration exits is larger than a fourth preset threshold, the last regeneration is proved to be incomplete, the parameter of the current regeneration is conveniently adjusted according to the data information of the last regeneration, namely, the target temperature of the current regeneration is adjusted to be larger than the lowest temperature of the last regeneration and smaller than the highest temperature, the limit value of the carbon load when the current regeneration exits is adjusted to be smaller than the carbon load when the last regeneration exits, and the time length of the current regeneration is prolonged to be the preset time length, so that the condition of the completion of the regeneration is met, the regeneration can be normally completed when the regeneration is performed according to the adjusted parameter, and the condition of frequent repeated regeneration is avoided.
In any one of the above technical solutions, when the data information satisfies a preset condition, adjusting, based on the data information, a target temperature of the current regeneration, a maximum time of the regeneration, and a carbon load limit value of exiting the regeneration, so as to satisfy a regeneration completion condition, the steps specifically include: when the data information meets the preset condition, the target temperature of the current regeneration is adjusted to be higher than the lowest temperature of the DOC outlet of the last regeneration and lower than the highest temperature of the DOC outlet of the last regeneration, the limit value of the carbon load of the current regeneration is adjusted to be lower than the carbon load of the current regeneration, and the duration of the current regeneration is prolonged to the preset duration.
In this technical solution, the last regeneration is proved to be incomplete when the following occurs, case one: when the difference between the exiting time of the current regeneration and the last regeneration is smaller than a first preset threshold, the carbon loading when the last regeneration exits is larger than a second preset threshold, and the time difference between the last regeneration exits and the last regeneration is larger than a third preset threshold; and a second case: when the difference between the exiting time of the current regeneration and the previous regeneration is smaller than a first preset threshold, the carbon loading when the previous regeneration exits is larger than a second preset threshold, and the mileage difference between the previous regeneration and the previous regeneration when the previous regeneration exits is larger than a fourth preset threshold. When any one of the above conditions is satisfied, it is indicated that the last regeneration is incomplete, at this time, the parameter of the current regeneration is adjusted according to the data information of the last regeneration, that is, the target temperature of the current regeneration is adjusted to be greater than the lowest temperature of the last regeneration and less than the highest temperature, the limit value of the carbon load of the current regeneration is adjusted to be less than the carbon load of the current regeneration when the current regeneration exits, and the duration of the current regeneration is prolonged to a preset duration, so that the condition of the completion of the regeneration is satisfied, and the regeneration can be normally completed when the regeneration is performed according to the adjusted parameter, thereby avoiding the frequent repeated regeneration. The time length of the regeneration may be prolonged to 60min to a preset time length.
In any of the above aspects, the DPF regeneration control method further includes: after the DPF regeneration is completed, the time difference between the DPF regeneration and the previous regeneration and the mileage difference between the DPF regeneration and the previous regeneration are cleared.
In the technical scheme, when the regeneration is completed, the time difference between the current regeneration and the previous regeneration and the mileage difference between the current regeneration and the previous regeneration are cleared, so that the determination of the completion of the current regeneration is conveniently carried out according to the two parameters.
A second aspect of the present invention provides a DPF regeneration control system, comprising: the acquisition module is used for acquiring the data information regenerated last time; the adjusting module is used for adjusting the target temperature of the current regeneration, the maximum regeneration time and the limit value of the carbon load which exits the regeneration based on the data information when the data information meets the preset condition, so as to meet the regeneration completion condition; and the execution module is used for carrying out DPF regeneration according to the adjusted target temperature, the maximum regeneration time and the carbon load limit value of exiting regeneration.
The DPF regeneration control system provided by the technical scheme of the invention comprises an acquisition module, an adjustment module and an execution module. The acquisition module is used for acquiring the data information regenerated last time; the adjusting module is used for adjusting the target temperature of the current regeneration, the maximum regeneration time and the limit value of the carbon load which exits the regeneration based on the data information when the data information meets the preset condition, so as to meet the regeneration completion condition; the execution module is used for carrying out DPF regeneration according to the adjusted target temperature, the maximum regeneration time and the carbon load limit value of exiting regeneration. Meanwhile, according to the DPF regeneration control system provided by the present invention, since the DPF regeneration control system is used for implementing the steps of the DPF regeneration control method provided by the first aspect of the present invention, the DPF regeneration control system has all technical effects of the DPF regeneration control method, and will not be described herein.
In any of the above technical solutions, the obtaining module is specifically configured to: and acquiring the exiting time of the last regeneration, the carbon loading at the exiting time of the last regeneration, the highest temperature and the lowest temperature of the DOC outlet, and the time difference between the last regeneration and the last regeneration. .
In the technical scheme, the time difference between the last regeneration and the last regeneration, the highest temperature and the lowest temperature of the DOC outlet and the exit time of the last regeneration are acquired, so that whether the last regeneration is completed or not is determined according to the time difference between the last regeneration and the mileage difference between the last regeneration, and because each regeneration in the application is normally completed, two parameters of the time difference between the last regeneration and the mileage difference between the last regeneration are cleared, and when the two parameters are not cleared, the regeneration is not completed, so that the parameter adjustment of the next regeneration is carried out; the maximum temperature and the minimum temperature of the DOC outlet are obtained so as to facilitate the target temperature adjustment of the next regeneration according to the temperature of the last unfinished regeneration; the method is characterized in that the method comprises the steps of obtaining the exiting time of the last regeneration and the carbon load when the last regeneration exits, so that whether the last regeneration is completed or not is conveniently determined, and when the last regeneration is not completed normally, the target temperature of the regeneration and the regeneration completion condition are adaptively adjusted, so that the next regeneration can be completed smoothly, and frequent regeneration is avoided.
In any of the above aspects, the DPF regeneration control method further includes: the determining module is used for determining that the data information meets the preset condition when the difference between the exiting time of the current regeneration and the previous regeneration is smaller than a first preset threshold, the carbon loading when the previous regeneration exits is larger than a second preset threshold, and the time difference between the previous regeneration and the previous regeneration when the previous regeneration exits is larger than a third preset threshold.
In the technical scheme, when the difference between the exiting time of the current regeneration and the previous regeneration is smaller than a first preset threshold, the carbon load when the previous regeneration exits is larger than a second preset threshold, and the time difference between the previous regeneration and the previous regeneration when the previous regeneration exits is larger than a third preset threshold, the previous regeneration is proved to be incomplete, the parameter of the current regeneration is conveniently adjusted according to the data information of the previous regeneration, namely, the target temperature of the current regeneration is adjusted to be larger than the lowest temperature of the previous regeneration and smaller than the highest temperature, the limit value of the carbon load when the current regeneration exits is adjusted to be smaller than the carbon load when the previous regeneration exits, and the time length of the current regeneration is prolonged to be the preset time length, so that the condition of the completion of the regeneration is met, the regeneration can be normally completed when the regeneration is performed according to the adjusted parameter, and the condition of frequent repeated regeneration is avoided.
In any of the above solutions, the obtaining module is further configured to: and acquiring the exiting time of the last regeneration, the carbon loading at the exiting time of the last regeneration, the highest temperature and the lowest temperature of the DOC outlet, and the mileage difference between the last regeneration and the last regeneration.
In the technical scheme, the mileage difference from the previous regeneration, the highest temperature and the lowest temperature of the DOC outlet of the previous regeneration and the exit time of the previous regeneration are acquired, so that whether the previous regeneration is completed or not is determined according to the mileage difference from the previous regeneration; the maximum temperature and the minimum temperature of the DOC outlet are obtained so as to facilitate the target temperature adjustment of the next regeneration according to the temperature of the last unfinished regeneration; the method is characterized in that the method comprises the steps of obtaining the exiting time of the last regeneration and the carbon load when the last regeneration exits, so that whether the last regeneration is completed or not is conveniently determined, and when the last regeneration is not completed normally, the target temperature of the regeneration and the regeneration completion condition are adaptively adjusted, so that the next regeneration can be completed smoothly, and frequent regeneration is avoided.
Wherein the third preset threshold and the fourth preset threshold are 0.
In any of the above solutions, the determining module is further configured to: and when the difference between the exiting time of the current regeneration and the exiting time of the last regeneration is smaller than a first preset threshold, the carbon loading when the last regeneration exits is larger than a second preset threshold, and the mileage difference between the last regeneration and the last regeneration is larger than a fourth preset threshold, determining that the data information meets the preset condition.
In the technical scheme, when the difference between the current regeneration and the exiting time of the last regeneration is smaller than a first preset threshold, the carbon load when the last regeneration exits is larger than a second preset threshold, and the mileage difference between the last regeneration and the previous regeneration when the last regeneration exits is larger than a fourth preset threshold, the last regeneration is proved to be incomplete, the parameter of the current regeneration is conveniently adjusted according to the data information of the last regeneration, namely, the target temperature of the current regeneration is adjusted to be larger than the lowest temperature of the last regeneration and smaller than the highest temperature, the limit value of the carbon load when the current regeneration exits is adjusted to be smaller than the carbon load when the last regeneration exits, and the time length of the current regeneration is prolonged to be the preset time length, so that the condition of the completion of the regeneration is met, the regeneration can be normally completed when the regeneration is performed according to the adjusted parameter, and the condition of frequent repeated regeneration is avoided.
In any of the above technical solutions, the adjusting module is specifically configured to: when the data information meets the preset condition, the target temperature of the current regeneration is adjusted to be higher than the lowest temperature of the DOC outlet of the last regeneration and lower than the highest temperature of the DOC outlet of the last regeneration, the limit value of the carbon load of the current regeneration is adjusted to be lower than the carbon load of the current regeneration, and the duration of the current regeneration is prolonged to the preset duration.
In this technical solution, the last regeneration is proved to be incomplete when the following occurs, case one: when the difference between the exiting time of the current regeneration and the last regeneration is smaller than a first preset threshold, the carbon loading when the last regeneration exits is larger than a second preset threshold, and the time difference between the last regeneration exits and the last regeneration is larger than a third preset threshold; and a second case: when the difference between the exiting time of the current regeneration and the previous regeneration is smaller than a first preset threshold, the carbon loading when the previous regeneration exits is larger than a second preset threshold, and the mileage difference between the previous regeneration and the previous regeneration when the previous regeneration exits is larger than a fourth preset threshold. When any one of the above conditions is satisfied, it is indicated that the last regeneration is incomplete, at this time, the parameter of the current regeneration is adjusted according to the data information of the last regeneration, that is, the target temperature of the current regeneration is adjusted to be greater than the lowest temperature of the last regeneration and less than the highest temperature, the limit value of the carbon load of the current regeneration is adjusted to be less than the carbon load of the current regeneration when the current regeneration exits, and the duration of the current regeneration is prolonged to a preset duration, so that the condition of the completion of the regeneration is satisfied, and the regeneration can be normally completed when the regeneration is performed according to the adjusted parameter, thereby avoiding the frequent repeated regeneration. The time length of the regeneration may be prolonged to 60min to a preset time length.
In any of the above aspects, the DPF regeneration control system further includes: and the zero clearing module is used for clearing the time difference between the DPF regeneration and the previous regeneration and the mileage difference between the DPF regeneration and the previous regeneration after the DPF regeneration is completed.
In the technical scheme, when the regeneration is completed, the time difference between the current regeneration and the previous regeneration and the mileage difference between the current regeneration and the previous regeneration are cleared, so that the determination of the completion of the current regeneration is conveniently carried out according to the two parameters.
A third aspect of the present invention provides a readable storage medium having stored thereon a program and/or instructions which, when executed by a processor, implement the steps of the DPF regeneration control method in any one of the above-described aspects.
According to the readable storage medium provided by the technical scheme of the invention, the steps of the DPF regeneration control method in any one of the technical schemes can be realized when the program and/or the instructions stored on the readable storage medium are executed by the processor, so that all the beneficial technical effects of the DPF regeneration control method are provided, and the description is omitted.
A fourth aspect of the present invention provides an engineering apparatus including a DPF regeneration control system as in the above-described technical solution; or a readable storage medium as in the above-described aspects.
According to the engineering equipment provided by the technical scheme of the invention, the engineering equipment comprises the DPF regeneration control system in the technical scheme or the readable storage medium in the technical scheme. Therefore, the engineering equipment has all technical effects of the DPF regeneration control system or the readable storage medium, and will not be described herein.
The engineering equipment can comprise working vehicles such as heavy trucks, trailers, excavators, excavating and anchoring machines, bulldozers, road rollers, concrete pump trucks and the like, or mechanical working equipment such as tower cranes, construction elevators, material elevators and the like.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a flow chart diagram of a DPF regeneration control method according to an embodiment of the invention;
FIG. 2 is a block diagram of a DPF regeneration control system in accordance with an embodiment of the invention;
fig. 3 is a flow chart of a DPF regeneration control method according to another embodiment of the present invention.
The correspondence between the reference numerals and the component names in fig. 2 is:
200DPF regeneration control system, 202 acquisition module, 204 adjustment module, 206 execution module.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
The following describes a DPF regeneration control method and system, an engineering device in some embodiments of the present invention with reference to fig. 1 to 3.
An embodiment of a first aspect of the present invention provides a DPF regeneration control method, as shown in fig. 1, including:
s102, acquiring the data information regenerated last time;
s104, when the data information meets the preset condition, adjusting the target temperature of the current regeneration, the maximum regeneration time and the limit value of the carbon load which exits the regeneration based on the data information, so as to meet the regeneration completion condition;
And S106, performing DPF regeneration according to the adjusted target temperature, the maximum regeneration time and the carbon load limit value of the regeneration.
According to the DPF regeneration control method provided by the embodiment, the last regeneration data is acquired so as to adjust the complete condition of the regeneration according to the last regeneration data, so that the regeneration can be successfully completed; and then determining the acquired data information of the last regeneration to determine whether the data information meets preset conditions, modulating the target temperature of the current regeneration, the maximum regeneration time and the carbon load limit value of the regeneration which is withdrawn from the current regeneration based on the acquired data information of the last regeneration under the condition that the preset conditions are met, enabling the data information to reach the level that the regeneration can be successfully completed, and entering the DPF regeneration of the current time based on the adjusted target temperature, the maximum regeneration time and the carbon load limit value of the regeneration which is withdrawn from the current regeneration. According to the method and the device, the last regenerated data are acquired, the working condition of the engineering equipment at the moment can be determined according to the acquired last regenerated data information, the speed of the engineering equipment at the moment is mastered, for example, the engineering equipment is in idle running at the moment, so that the target temperature of the regeneration and the regeneration completion condition, namely the maximum regeneration time and the carbon load limit value of the regeneration exit can be adaptively adjusted according to the performance of the last regeneration under the working condition that the engineering equipment cannot complete the running regeneration, the regeneration can be successfully completed, and frequent regeneration is avoided.
In the above embodiment, the step of acquiring the data information regenerated last time specifically includes: and acquiring the exiting time of the last regeneration, the carbon loading at the exiting time of the last regeneration, the highest temperature and the lowest temperature of the DOC outlet, and the time difference between the last regeneration and the last regeneration.
In this embodiment, by acquiring the time difference between the last regeneration and the last regeneration, the highest temperature and the lowest temperature of the DOC outlet, and the exit time of the last regeneration, the carbon load at the exit of the last regeneration is acquired, so as to determine whether the last regeneration is completed according to the time difference between the last regeneration and the mileage difference between the last regeneration, because each regeneration in the application is normally completed, if the time difference between the last regeneration and the mileage difference between the last regeneration is normally completed, the two parameters are cleared, and when the two parameters are not cleared, the regeneration is not completed, so that the parameter adjustment of the next regeneration is performed subsequently; the maximum temperature and the minimum temperature of the DOC outlet are obtained so as to facilitate the target temperature adjustment of the next regeneration according to the temperature of the last unfinished regeneration; the method is characterized in that the method comprises the steps of obtaining the exiting time of the last regeneration and the carbon load when the last regeneration exits, so that whether the last regeneration is completed or not is conveniently determined, and when the last regeneration is not completed normally, the target temperature of the regeneration and the regeneration completion condition are adaptively adjusted, so that the next regeneration can be completed smoothly, and frequent regeneration is avoided.
In the above embodiment, the DPF regeneration control method further includes: and when the difference between the exiting time of the current regeneration and the exiting time of the last regeneration is smaller than a first preset threshold, the carbon loading when the last regeneration exits is larger than a second preset threshold, and the time difference between the last regeneration exits and the previous regeneration is larger than a third preset threshold, determining that the data information meets the preset condition.
In this embodiment, when the difference between the exit time of the current regeneration and the last regeneration is smaller than the first preset threshold, the carbon load at the exit of the last regeneration is larger than the second preset threshold, and the time difference between the exit of the last regeneration and the previous regeneration is larger than the third preset threshold, it is proved that the last regeneration is incomplete, the parameter of the current regeneration is conveniently adjusted according to the data information of the last regeneration, that is, the target temperature of the current regeneration is adjusted to be larger than the lowest temperature of the last regeneration and smaller than the highest temperature, the limit value of the carbon load at the exit of the current regeneration is adjusted to be smaller than the carbon load at the exit of the last regeneration, and the time length of the current regeneration is prolonged to be the preset time length, so that the condition of the completion of the regeneration is satisfied, the regeneration can be normally completed when the regeneration is performed according to the adjusted parameter, and the condition of frequent repeated regeneration is avoided.
In the above embodiment, the step of acquiring the data information regenerated last time further includes: and acquiring the exiting time of the last regeneration, the carbon loading at the exiting time of the last regeneration, the highest temperature and the lowest temperature of the DOC outlet, and the mileage difference between the last regeneration and the last regeneration.
In this embodiment, by acquiring the mileage difference between the last regeneration and the last regeneration, the highest temperature and the lowest temperature of the DOC outlet, and the exit time of the last regeneration, the carbon load when the last regeneration exits is acquired, so as to determine whether the last regeneration is completed according to the mileage difference between the last regeneration and the last regeneration, because each regeneration in the application, if the regeneration is normally completed, the parameter of the mileage difference between the last regeneration and the last regeneration is cleared, and when the parameter is not cleared, the parameter means that the regeneration is not completed, so as to facilitate the parameter adjustment of the next regeneration; the maximum temperature and the minimum temperature of the DOC outlet are obtained so as to facilitate the target temperature adjustment of the next regeneration according to the temperature of the last unfinished regeneration; the method is characterized in that the method comprises the steps of obtaining the exiting time of the last regeneration and the carbon load when the last regeneration exits, so that whether the last regeneration is completed or not is conveniently determined, and when the last regeneration is not completed normally, the target temperature of the regeneration and the regeneration completion condition are adaptively adjusted, so that the next regeneration can be completed smoothly, and frequent regeneration is avoided.
Wherein the third preset threshold and the fourth preset threshold are 0.
In any of the above embodiments, the DPF regeneration control method further includes: and when the difference between the exiting time of the current regeneration and the exiting time of the last regeneration is smaller than a first preset threshold, the carbon loading when the last regeneration exits is larger than a second preset threshold, and the mileage difference between the last regeneration and the last regeneration is larger than a fourth preset threshold, determining that the data information meets the preset condition.
In this embodiment, when the difference between the exit time of the current regeneration and the previous regeneration is smaller than the first preset threshold, the carbon load at the exit of the previous regeneration is larger than the second preset threshold, and the mileage difference between the exit of the previous regeneration and the previous regeneration is larger than the fourth preset threshold, it is proved that the previous regeneration is incomplete, the parameter of the current regeneration is conveniently adjusted according to the data information of the previous regeneration, that is, the target temperature of the current regeneration is adjusted to be larger than the lowest temperature of the previous regeneration and smaller than the highest temperature, the limit value of the carbon load at the exit of the current regeneration is adjusted to be smaller than the carbon load at the exit of the previous regeneration, and the duration of the current regeneration is prolonged to be the preset duration, so that the condition of the completion of the regeneration is satisfied, the regeneration can be normally completed when the regeneration is performed according to the adjusted parameter, and the condition of frequent repeated regeneration is avoided.
In any of the above embodiments, when the data information satisfies the preset condition, adjusting the target temperature of the current regeneration, the maximum time of the regeneration, and the carbon load limit value of exiting the regeneration based on the data information, so as to satisfy the regeneration completion condition, the steps specifically include: when the data information meets the preset condition, the target temperature of the current regeneration is adjusted to be higher than the lowest temperature of the DOC outlet of the last regeneration and lower than the highest temperature of the DOC outlet of the last regeneration, the limit value of the carbon load of the current regeneration is adjusted to be lower than the carbon load of the current regeneration, and the duration of the current regeneration is prolonged to the preset duration.
In this embodiment, the last regeneration is proven incomplete when the following occurs, case one: when the difference between the exiting time of the current regeneration and the last regeneration is smaller than a first preset threshold, the carbon loading when the last regeneration exits is larger than a second preset threshold, and the time difference between the last regeneration exits and the last regeneration is larger than a third preset threshold; and a second case: when the difference between the exiting time of the current regeneration and the previous regeneration is smaller than a first preset threshold, the carbon loading when the previous regeneration exits is larger than a second preset threshold, and the mileage difference between the previous regeneration and the previous regeneration when the previous regeneration exits is larger than a fourth preset threshold. When any one of the above conditions is satisfied, it is indicated that the last regeneration is incomplete, at this time, the parameter of the current regeneration is adjusted according to the data information of the last regeneration, that is, the target temperature of the current regeneration is adjusted to be greater than the lowest temperature of the last regeneration and less than the highest temperature, the limit value of the carbon load of the current regeneration is adjusted to be less than the carbon load of the current regeneration when the current regeneration exits, and the duration of the current regeneration is prolonged to a preset duration, so that the condition of the completion of the regeneration is satisfied, and the regeneration can be normally completed when the regeneration is performed according to the adjusted parameter, thereby avoiding the frequent repeated regeneration. The time length of the regeneration may be prolonged to 60min to a preset time length.
In any of the above embodiments, the DPF regeneration control method further includes: after the DPF regeneration is completed, the time difference between the DPF regeneration and the previous regeneration and the mileage difference between the DPF regeneration and the previous regeneration are cleared.
In this embodiment, when the current regeneration is completed, the time difference from the previous regeneration and the mileage difference from the previous regeneration are cleared, so that the determination of the completion of the current regeneration is performed according to the two parameters.
A second aspect of the present invention provides a DPF regeneration control system 200, as shown in fig. 2, including: an acquisition module 202, configured to acquire data information regenerated last time; the adjusting module 204 is configured to adjust, based on the data information, the target temperature of the current regeneration, the maximum time of the regeneration, and the carbon load limit value of the regeneration when the data information meets a preset condition, so as to meet a regeneration completion condition; the execution module 206 is configured to perform the present DPF regeneration based on the adjusted target temperature, the maximum regeneration time, and the carbon loading limit value for exiting the regeneration.
The DPF regeneration control system 200 provided according to an embodiment of the present invention includes an acquisition module 202, an adjustment module 204, and an execution module 206. The acquiring module 202 is configured to acquire data information regenerated last time; the adjustment module 204 is configured to adjust, based on the data information, a target temperature of the current regeneration, a maximum time of the regeneration, and a carbon load limit value of the regeneration when the data information meets a preset condition, so as to meet a regeneration completion condition; the execution module 206 is operable to perform the present DPF regeneration based on the adjusted target temperature, the maximum regeneration time, and the carbon loading limit for exiting the regeneration. Meanwhile, according to the DPF regeneration control system provided by the embodiment of the present invention, since the DPF regeneration control system is used for implementing the steps of the DPF regeneration control method provided by the first aspect of the present invention, the DPF regeneration control system has all technical effects of the DPF regeneration control method, which are not described herein.
In any of the foregoing embodiments, the obtaining module is specifically configured to: and acquiring the exiting time of the last regeneration, the carbon loading at the exiting time of the last regeneration, the highest temperature and the lowest temperature of the DOC outlet, and the time difference between the last regeneration and the last regeneration.
In this embodiment, by acquiring the time difference between the last regeneration and the last regeneration, the highest temperature and the lowest temperature of the DOC outlet, and the exit time of the last regeneration, the carbon load at the exit of the last regeneration is acquired, so as to determine whether the last regeneration is completed according to the time difference between the last regeneration and the mileage difference between the last regeneration, because each regeneration in the application is normally completed, if the time difference between the last regeneration and the mileage difference between the last regeneration is normally completed, the two parameters are cleared, and when the two parameters are not cleared, the regeneration is not completed, so that the parameter adjustment of the next regeneration is performed subsequently; the maximum temperature and the minimum temperature of the DOC outlet are obtained so as to facilitate the target temperature adjustment of the next regeneration according to the temperature of the last unfinished regeneration; the method is characterized in that the method comprises the steps of obtaining the exiting time of the last regeneration and the carbon load when the last regeneration exits, so that whether the last regeneration is completed or not is conveniently determined, and when the last regeneration is not completed normally, the target temperature of the regeneration and the regeneration completion condition are adaptively adjusted, so that the next regeneration can be completed smoothly, and frequent regeneration is avoided.
In any of the above embodiments, the DPF regeneration control method further includes: the determining module is used for determining that the data information meets the preset condition when the difference between the exiting time of the current regeneration and the previous regeneration is smaller than a first preset threshold, the carbon loading when the previous regeneration exits is larger than a second preset threshold, and the time difference between the previous regeneration and the previous regeneration when the previous regeneration exits is larger than a third preset threshold.
In this embodiment, when the difference between the exit time of the current regeneration and the last regeneration is smaller than the first preset threshold, the carbon load at the exit of the last regeneration is larger than the second preset threshold, and the time difference between the exit of the last regeneration and the previous regeneration is larger than the third preset threshold, it is proved that the last regeneration is incomplete, the parameter of the current regeneration is conveniently adjusted according to the data information of the last regeneration, that is, the target temperature of the current regeneration is adjusted to be larger than the lowest temperature of the last regeneration and smaller than the highest temperature, the limit value of the carbon load at the exit of the current regeneration is adjusted to be smaller than the carbon load at the exit of the last regeneration, and the time length of the current regeneration is prolonged to be the preset time length, so that the condition of the completion of the regeneration is satisfied, the regeneration can be normally completed when the regeneration is performed according to the adjusted parameter, and the condition of frequent repeated regeneration is avoided.
In any of the above embodiments, the obtaining module is further configured to: and acquiring the exiting time of the last regeneration, the carbon loading at the exiting time of the last regeneration, the highest temperature and the lowest temperature of the DOC outlet, and the mileage difference between the last regeneration and the last regeneration.
In this embodiment, by acquiring the mileage difference between the last regeneration and the last regeneration, the highest temperature and the lowest temperature of the DOC outlet, and the exit time of the last regeneration, the carbon load when the last regeneration exits is acquired, so as to determine whether the last regeneration is completed according to the mileage difference between the last regeneration and the last regeneration, because each regeneration in the application, if the regeneration is normally completed, the parameter of the mileage difference between the last regeneration and the last regeneration is cleared, and when the parameter is not cleared, the parameter means that the regeneration is not completed, so as to facilitate the parameter adjustment of the next regeneration; the maximum temperature and the minimum temperature of the DOC outlet are obtained so as to facilitate the target temperature adjustment of the next regeneration according to the temperature of the last unfinished regeneration; the method is characterized in that the method comprises the steps of obtaining the exiting time of the last regeneration and the carbon load when the last regeneration exits, so that whether the last regeneration is completed or not is conveniently determined, and when the last regeneration is not completed normally, the target temperature of the regeneration and the regeneration completion condition are adaptively adjusted, so that the next regeneration can be completed smoothly, and frequent regeneration is avoided.
Wherein the third preset threshold and the fourth preset threshold are 0.
In any of the above embodiments, the determining module is further configured to: and when the difference between the exiting time of the current regeneration and the exiting time of the last regeneration is smaller than a first preset threshold, the carbon loading when the last regeneration exits is larger than a second preset threshold, and the mileage difference between the last regeneration and the last regeneration is larger than a fourth preset threshold, determining that the data information meets the preset condition.
In this embodiment, when the difference between the exit time of the current regeneration and the previous regeneration is smaller than the first preset threshold, the carbon load at the exit of the previous regeneration is larger than the second preset threshold, and the mileage difference between the exit of the previous regeneration and the previous regeneration is larger than the fourth preset threshold, it is proved that the previous regeneration is incomplete, the parameter of the current regeneration is conveniently adjusted according to the data information of the previous regeneration, that is, the target temperature of the current regeneration is adjusted to be larger than the lowest temperature of the previous regeneration and smaller than the highest temperature, the limit value of the carbon load at the exit of the current regeneration is adjusted to be smaller than the carbon load at the exit of the previous regeneration, and the duration of the current regeneration is prolonged to be the preset duration, so that the condition of the completion of the regeneration is satisfied, the regeneration can be normally completed when the regeneration is performed according to the adjusted parameter, and the condition of frequent repeated regeneration is avoided.
In any of the foregoing embodiments, the adjustment module is specifically configured to: when the data information meets the preset condition, the target temperature of the current regeneration is adjusted to be higher than the lowest temperature of the DOC outlet of the last regeneration and lower than the highest temperature of the DOC outlet of the last regeneration, the limit value of the carbon load of the current regeneration is adjusted to be lower than the carbon load of the current regeneration, and the duration of the current regeneration is prolonged to the preset duration.
In this embodiment, the last regeneration is proven incomplete when the following occurs, case one: when the difference between the exiting time of the current regeneration and the last regeneration is smaller than a first preset threshold, the carbon loading when the last regeneration exits is larger than a second preset threshold, and the time difference between the last regeneration exits and the last regeneration is larger than a third preset threshold; and a second case: when the difference between the exiting time of the current regeneration and the previous regeneration is smaller than a first preset threshold, the carbon loading when the previous regeneration exits is larger than a second preset threshold, and the mileage difference between the previous regeneration and the previous regeneration when the previous regeneration exits is larger than a fourth preset threshold. When any one of the above conditions is satisfied, it is indicated that the last regeneration is incomplete, at this time, the parameter of the current regeneration is adjusted according to the data information of the last regeneration, that is, the target temperature of the current regeneration is adjusted to be greater than the lowest temperature of the last regeneration and less than the highest temperature, the limit value of the carbon load of the current regeneration is adjusted to be less than the carbon load of the current regeneration when the current regeneration exits, and the duration of the current regeneration is prolonged to a preset duration, so that the condition of the completion of the regeneration is satisfied, and the regeneration can be normally completed when the regeneration is performed according to the adjusted parameter, thereby avoiding the frequent repeated regeneration. The time length of the regeneration may be prolonged to 60min to a preset time length.
In any of the above embodiments, the DPF regeneration control system further includes: and the zero clearing module is used for clearing the time difference between the DPF regeneration and the previous regeneration and the mileage difference between the DPF regeneration and the previous regeneration after the DPF regeneration is completed.
In this embodiment, when the current regeneration is completed, the time difference from the previous regeneration and the mileage difference from the previous regeneration are cleared, so that the determination of the completion of the current regeneration is performed according to the two parameters.
An embodiment of a third aspect of the present invention provides a readable storage medium having stored thereon a program and/or instructions which, when executed by a processor, implement the steps of the DPF regeneration control method in any of the above embodiments.
According to the readable storage medium provided by the embodiment of the present invention, since the program and/or the instructions stored thereon can implement the steps of the DPF regeneration control method in any of the above embodiments when executed by the processor, all the beneficial technical effects of the DPF regeneration control method are provided and will not be described herein.
An embodiment of a fourth aspect of the present invention provides an engineering apparatus including the DPF regeneration control system as in the above embodiment; or a readable storage medium as in the above embodiments.
According to the engineering device provided by the embodiment of the invention, the engineering device comprises the DPF regeneration control system as in the embodiment or the readable storage medium as in the embodiment. Therefore, the engineering equipment has all technical effects of the DPF regeneration control system or the readable storage medium, and will not be described herein.
The engineering equipment can comprise working vehicles such as heavy trucks, trailers, excavators, excavating and anchoring machines, bulldozers, road rollers, concrete pump trucks and the like, or mechanical working equipment such as tower cranes, construction elevators, material elevators and the like.
The DPF regeneration control method provided by the present application is further described below in connection with another specific embodiment.
The embodiment provides a DPF regeneration control method, which can adaptively adjust the target temperature and the regeneration completion condition of regeneration according to the previous regeneration performance when recognizing that some working conditions cannot complete the running regeneration, so that the regeneration can be successfully completed and frequent regeneration is avoided. As shown in fig. 3, the DPF regeneration control method is as follows:
s302, the time T1 from the last regeneration is smaller than the set time t_set.
S304, DPF carbon loading at the last regeneration stopping time is larger than a set value Soot_dem.
S306, the Time from the last regeneration stop Time to the last regeneration is greater than the set value time_set.
S308, the distance from the last regeneration stop time to the last regeneration is greater than the set value s_set.
S310, the last regeneration is not completed, and the indication amount flag of frequent regeneration=1.
S312, adjusting the following setting parameters: the regenerated target temperature T_dem is equal to the DOC average temperature of the last regeneration; the carbon load Soot_dem of the regeneration completion is larger than or equal to the DPF carbon load at the last regeneration stopping moment; the regeneration Time Time_dem is equal to 60 minutes.
S314, after the condition of the previous step is met, resetting to 0 from the last regeneration time, resetting to 0 from the mileage of the last regeneration, and exiting the regeneration.
The present embodiment is implemented by collecting information on each regeneration: minimum, maximum, average exhaust flow, maximum, minimum of DOC outlet temperature during regeneration; the carbon loading at the time of the exit from regeneration, mileage and time from the last regeneration.
Among them, DOC (diesel oxidation catalyst) is the first step of exhaust gas aftertreatment, DPF is placed behind DOC, and particulate emissions can be captured before they enter the atmosphere, thus reducing the particulate matter of exhaust gas emissions. When the device captures the particulate matters, the captured particulate matters are oxidized and digested, so that the DPF is regenerated. The average value, the maximum value and the minimum value of the exhaust flow are obtained, and the working condition can be determined according to the magnitude of the exhaust flow, so that the running regeneration can not be completed according to the working condition, and further, the target temperature and the regeneration completion condition of the regeneration can be adaptively adjusted according to the performance of the last regeneration, the regeneration can be successfully completed, and frequent regeneration is avoided.
Determining whether the Time of the last regeneration is smaller than a set limit value T_set, whether the carbon load at the last regeneration exit is larger than a set limit value Soot_dem, whether the Time of the last regeneration at the last regeneration exit is larger than Time_set or whether the mileage at the last regeneration exit is larger than S_set; either of these two cases is true, which triggers an indication flag=1, indicating that the last regeneration was not completed.
The target temperature of the regeneration is automatically adjusted to be equal to the average temperature of the last regeneration, the maximum time of the regeneration is set to be a proper time (60 min), and the limit value of the exiting carbon load is smaller than the carbon load when the last regeneration exits, so that the condition of finishing the regeneration can be satisfied.
After the regeneration is completed, the mileage and time from the last regeneration are reset.
The embodiment can enable the next second regeneration to be completed under the condition that the normal regeneration cannot be completed under certain special working conditions; frequent regeneration is avoided; meanwhile, the problem caused by poor accuracy of the carbon loading model at low temperature and low flow rate is avoided.
In this specification, the term "plurality" means two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, the terms "one embodiment," "some embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A DPF regeneration control method, characterized by comprising:
acquiring the data information regenerated last time;
when the data information meets preset conditions, adjusting the target temperature of the current regeneration, the maximum regeneration time and the limit value of the carbon load which exits the regeneration based on the data information, so as to meet the regeneration completion conditions;
Performing the DPF regeneration based on the adjusted target temperature, the maximum regeneration time and the carbon loading limit value for exiting regeneration;
when the data information meets the preset condition, adjusting the target temperature of the current regeneration, the maximum regeneration time and the limit value of the carbon load which exits the regeneration based on the data information, so as to meet the regeneration completion condition, wherein the step of specifically comprises the following steps:
when the data information meets the preset condition, the target temperature of the current regeneration is adjusted to be higher than the lowest temperature of the DOC outlet of the last regeneration and lower than the highest temperature of the DOC outlet of the last regeneration, the limit value of the carbon load of the current regeneration is adjusted to be lower than the carbon load of the current regeneration when the current regeneration exits, and the duration of the current regeneration is prolonged to be the preset duration.
2. The DPF regeneration control method according to claim 1, characterized in that the step of acquiring the data information of the last regeneration specifically includes:
and obtaining the exiting time of the last regeneration, the carbon load at the exiting time of the last regeneration, the highest temperature and the lowest temperature of the DOC outlet of the last regeneration, and the time difference between the last regeneration and the last regeneration.
3. The DPF regeneration control method according to claim 2, characterized by further comprising:
And determining that the data information meets a preset condition when the difference between the current regeneration and the exiting time of the last regeneration is smaller than a first preset threshold, the carbon loading when the last regeneration exits is larger than a second preset threshold, and the time difference between the last regeneration exits and the previous regeneration is larger than a third preset threshold.
4. The DPF regeneration control method according to claim 1, characterized in that the step of acquiring data information of the last regeneration further includes:
and acquiring the exiting time of the last regeneration, the carbon loading at the exiting time of the last regeneration, the highest temperature and the lowest temperature of the DOC outlet, and the mileage difference between the last regeneration and the last regeneration.
5. The DPF regeneration control method according to claim 4, further comprising:
and determining that the data information meets a preset condition when the difference between the current regeneration and the exiting time of the last regeneration is smaller than a first preset threshold, the carbon loading when the last regeneration exits is larger than a second preset threshold, and the mileage difference between the last regeneration and the previous regeneration when the last regeneration exits is larger than a fourth preset threshold.
6. The DPF regeneration control method according to any one of claims 1 to 5, characterized by further comprising:
And after the DPF regeneration is completed, resetting the time difference between the DPF regeneration and the previous regeneration and the mileage difference between the DPF regeneration and the previous regeneration.
7. A DPF regeneration control system, comprising:
the acquisition module is used for acquiring the data information regenerated last time;
the adjusting module is used for adjusting the target temperature of the current regeneration, the maximum regeneration time and the limit value of the carbon load which exits the regeneration based on the data information when the data information meets the preset condition, so as to meet the regeneration completion condition;
the execution module is used for carrying out DPF regeneration at this time based on the adjusted target temperature, the maximum regeneration time and the carbon load limit value of exiting regeneration;
when the data information meets the preset condition, adjusting the target temperature of the current regeneration, the maximum regeneration time and the limit value of the carbon load which exits the regeneration based on the data information, so as to meet the regeneration completion condition, wherein the step of specifically comprises the following steps:
when the data information meets the preset condition, the target temperature of the current regeneration is adjusted to be higher than the lowest temperature of the DOC outlet of the last regeneration and lower than the highest temperature of the DOC outlet of the last regeneration, the limit value of the carbon load of the current regeneration is adjusted to be lower than the carbon load of the current regeneration when the current regeneration exits, and the duration of the current regeneration is prolonged to be the preset duration.
8. A readable storage medium, characterized in that a program and/or instructions are stored thereon, which when executed by a processor, implement the steps of the DPF regeneration control method according to any one of claims 1 to 6.
9. An engineering plant comprising the DPF regeneration control system according to claim 7; or (b)
The readable storage medium of claim 8.
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| CN1818356A (en) * | 2004-07-23 | 2006-08-16 | 日产自动车株式会社 | Regeneration of diesel particulate filter |
| CN101113681A (en) * | 2006-07-26 | 2008-01-30 | 三菱自动车工业株式会社 | Exhaust purification device |
| CN110735697A (en) * | 2019-12-20 | 2020-01-31 | 潍柴动力股份有限公司 | method, system and engine for controlling DPF regeneration |
| CN111691957A (en) * | 2020-07-06 | 2020-09-22 | 潍柴动力股份有限公司 | Active regeneration control method and control system of DPF |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20120204537A1 (en) * | 2011-02-11 | 2012-08-16 | Caterpillar Inc. | Adaptive diesel particulate filter regeneration control and method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1818356A (en) * | 2004-07-23 | 2006-08-16 | 日产自动车株式会社 | Regeneration of diesel particulate filter |
| CN101113681A (en) * | 2006-07-26 | 2008-01-30 | 三菱自动车工业株式会社 | Exhaust purification device |
| CN110735697A (en) * | 2019-12-20 | 2020-01-31 | 潍柴动力股份有限公司 | method, system and engine for controlling DPF regeneration |
| CN111691957A (en) * | 2020-07-06 | 2020-09-22 | 潍柴动力股份有限公司 | Active regeneration control method and control system of DPF |
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