CN114458422B - DPF active regeneration control method and system - Google Patents
DPF active regeneration control method and system Download PDFInfo
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- CN114458422B CN114458422B CN202210224738.0A CN202210224738A CN114458422B CN 114458422 B CN114458422 B CN 114458422B CN 202210224738 A CN202210224738 A CN 202210224738A CN 114458422 B CN114458422 B CN 114458422B
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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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
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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
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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
- F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
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- 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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- General Engineering & Computer Science (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
The invention relates to the technical field of engines, and particularly discloses a DPF active regeneration control method and a DPF active regeneration control system. The method comprises the following steps: starting the engine; monitoring a parameter of the engine; judging whether the temperature T4 exceeds the first time above the first temperature, whether the temperature T5 exceeds the second time above the second temperature and whether the running time of the engine exceeds the third time; judging whether the running time exceeds the fourth time or not; judging whether the T4 temperature exceeds a first time when being above a first temperature, the T5 temperature is maintained above a second temperature and exceeds a second time, and whether the carbon loading in the DPF is greater than a first threshold value; judging whether the carbon loading is greater than a second threshold value; judging whether the pressure difference of the DPF is larger than a pressure difference threshold value or not; and when all the judgment results are yes, performing active regeneration of the DPF, otherwise, judging again after the judgment is finished. The method comprehensively judges the working condition of the engine, controls the regeneration moment within the time range of the high temperature of the engine and exerts the advantage of economy.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a DPF active regeneration control method and a DPF active regeneration control system.
Background
With the development of science and technology, environmental protection becomes one of the most concerned focuses of all industries. Especially for the automobile industry, the exhaust gas of the engine needs to be treated to reach the emission standard. The sixth stage maneuver of the current countryDiesel engines specified by vehicle pollutant emission standards are provided with a DPF (Particulate Filter), and gases emitted by the Diesel engines are treated by the DPF to meet emission standards. In the DPF, too much soot usually occurs, and the soot removal method is a passive regeneration function and an active regeneration function of the DPF. The passive regeneration is mainly to improve NO through a heat management technology 2 And use of NO 2 The reaction with the carbon deposit in the DPF is realized, the regeneration or carbon balance of the DPF is realized at a lower exhaust temperature, but the requirement on the working condition of the engine is higher, and the reliability is poor, so that the utilization is not much. The active regeneration is mainly realized by injecting oil through a tail pipe or injecting oil after an engine self-oil injector, more fuel oil needs to be additionally injected under the working condition of low exhaust temperature, only little oil injection or even no oil injection is needed under the working condition of high exhaust temperature, the temperature of the DPF inlet is increased to about 550 ℃, and carbon deposition in the DPF and O in exhaust gas can be mixed at the moment 2 The rapid combustion is performed to realize the regeneration of the DPF in a short time.
In the prior art, the method for monitoring the carbon loading of the DPF is used for judging whether to trigger the active regeneration function of the DPF. However, whether the DPF needs to be regenerated is mainly judged according to one or more combinations of factors such as the running time, the oil consumption, the mileage, the carbon loading amount and the pressure difference of the engine, and the threshold values corresponding to the judgment conditions are fixed and single, so that the regeneration requirement is sent only when the DPF is close to full carbon, the function of the existing active regeneration control system is not flexible enough, the actual working condition of the engine is not considered, and the economy of the engine is not facilitated. In practical applications of an engine, the pre-temperature of a DOC (Oxidation Catalyst, abbreviated as T4 temperature) and the pre-temperature of a DPF (abbreviated as T5 temperature) are also important factors that can determine whether the DPF needs to be regenerated.
At present, a small number of active regeneration control systems with engine working conditions or vehicle working conditions are identified, but different regeneration modes are selected according to different working conditions, for example, the low-load working condition strengthening regeneration function is adopted, a proper regeneration time is not selected according to the working conditions, and the economical efficiency is not obviously improved essentially.
Disclosure of Invention
The invention aims to provide a DPF active regeneration control method and a DPF active regeneration control system so as to ensure the accuracy and flexibility of active regeneration control and improve the use economy of an engine.
In order to achieve the purpose, the invention adopts the following technical scheme:
a DPF active regeneration control method comprising the steps of:
s110, starting an engine;
s120, monitoring the running time of the engine, the carbon loading in the DPF, the pressure difference of the DPF, the T4 temperature and the T5 temperature;
s210, judging whether the T4 temperature is kept above a first temperature for more than a first time, whether the T5 temperature is kept above a second temperature for more than a second time and whether the running time of the engine is accumulated for more than a third time, if so, performing S310, otherwise, performing S220;
s220, judging whether the running time of the engine is accumulated to exceed a fourth time, if so, performing S310, and if not, performing S230;
s230, judging whether the T4 temperature is kept above a first temperature for more than a first time, the T5 temperature is kept above a second temperature for more than a second time and the carbon loading amount in the DPF is more than a first threshold value, if so, performing a step S310, otherwise, performing a step S240;
s240, judging whether the carbon loading in the DPF is larger than a second threshold value, if so, performing the step S310, and if not, performing the step S250;
s250, judging whether the DPF pressure difference is larger than a pressure difference threshold value, if so, performing a step S310, otherwise, returning to the step S120;
and S310, performing active regeneration on the DPF.
As a preferred embodiment of the DPF active regeneration control method, the following steps are included after step S310:
s320, judging whether the time of keeping the DPF above the regeneration temperature is accumulated and exceeds the regeneration time, if so, performing a step S330, otherwise, returning to the step S310;
s330, the DPF stops active regeneration, and then returns to step S120.
As a preferable technical solution of the DPF active regeneration control method, the regeneration time is 20 minutes, and the regeneration temperature is 550 ℃.
The DPF active regeneration control system can be applied to the DPF active regeneration control method, and comprises a processing component, a calculating component, a judging component and an electric control component; said processing assembly is configured to record, during engine operation, a time said T4 temperature is maintained above said first temperature, a time said T5 temperature is maintained above said second temperature, a carbon loading within said DPF, and a pressure differential across said DPF; the calculation component is used for accumulating the running time of the engine; the judging component is used for comparing the time after the T4 temperature exceeds the first temperature with the first time, the time after the T5 temperature exceeds the second temperature with the second time, the carbon loading in the DPF with the first threshold value and the second threshold value, the running time of the engine with the third time and the fourth time and the DPF pressure difference with the pressure difference threshold value; the electronic control component is used for sending a DPF active regeneration request/regeneration stopping request to the DPF so as to enable the DPF to carry out active regeneration/active regeneration stopping.
As the preferred technical scheme of the DPF active regeneration control system, the processing assembly comprises a temperature measuring unit, a first timing unit and a second timing unit; the temperature measuring unit is used for measuring the T4 temperature and the T5 temperature; when the T4 temperature exceeds the first temperature, the first timing unit starts timing, and when the T5 temperature exceeds the second temperature, the second timing unit starts timing.
As a preferred solution for the DPF active regeneration control system, said treatment assembly comprises a metering unit for measuring the carbon load in said DPF.
As a preferred technical scheme of the DPF active regeneration control system, the processing assembly comprises a pressure measuring unit, and the pressure measuring unit is used for measuring the pressure difference of the DPF.
In a preferred embodiment of the DPF active regeneration control system, the first timing means and the second timing means are cleared to zero when the DPF is actively regenerated.
As a preferable embodiment of the DPF active regeneration control system, the calculation module includes a third timing unit that starts timing when the engine is started.
In a preferred embodiment of the DPF active regeneration control system, the third timing means is configured to zero the timing when the DPF is actively regenerated.
The invention has the beneficial effects that:
the DPF active regeneration control method can judge various different parameters at the same time by monitoring the running time, the carbon loading amount in the DPF, the pressure difference of the DPF, the T4 temperature and the T5 temperature, and therefore the DPF can be selected to enter active regeneration immediately or delay the entering of the active regeneration; when the T4 temperature is kept above the first temperature for more than the first time and the T5 temperature is kept above the second temperature for more than the second time, the engine can be judged to be operated under a high-temperature working condition; the control of DPF active regeneration by the process improvement is more accurate and flexible, so that the method can comprehensively judge the working condition of the engine, and the time of DPF active regeneration is controlled in a high-temperature time interval in the engine on the premise of ensuring the safe work of the DPF, so that extra oil injection is reduced, and the advantage of good economy of DPF active regeneration under the high-temperature working condition is fully exerted.
The DPF active regeneration control system can complete monitoring, statistics, calculation and comparison operations of various parameters by utilizing the arrangement of the processing component, the calculating component and the judging component, so that accurate judgment can be made for various parameters, and then an electric control component is utilized to send a result for starting or stopping triggering the DPF active regeneration mode to the DPF.
Drawings
FIG. 1 is a flow chart of a DPF active regeneration control method provided by an embodiment of the present invention;
fig. 2 is a block diagram of a DPF active regeneration control system according to an embodiment of the present invention.
In the figure:
100. a processing component; 200. a computing component; 300. judging a component; 400. an electronic control assembly.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in fig. 1, the present embodiment provides a DPF active regeneration control method, including the steps of:
the method comprises the following steps: the engine is started.
Step two: the engine run length, DPF carbon loading, DPF differential pressure, T4 temperature, and T5 temperature were monitored.
Step three: and judging whether the temperature T4 is kept above the first temperature for more than the first time, whether the temperature T5 is kept above the second temperature for more than the second time and whether the running time of the engine is accumulated for more than the third time, if so, performing the step eight, and otherwise, performing the step four.
Step four: and judging whether the running time of the engine is accumulated to exceed the fourth time, if so, performing the step eight, and if not, performing the step five.
Step five: and judging whether the T4 temperature is kept above the first temperature for more than the first time, whether the T5 temperature is kept above the second temperature for more than the second time and whether the carbon loading in the DPF is more than a first threshold value, if so, performing a step eight, and if not, performing a step six.
Step six: and judging whether the carbon loading in the DPF is larger than a second threshold value, if so, performing a step eight, and if not, performing a step seven.
Step seven: and judging whether the DPF pressure difference is larger than a pressure difference threshold value, if so, performing the step eight, and if not, returning to the step two.
Step eight: the DPF is actively regenerated.
The DPF active regeneration control method can judge various different parameters simultaneously by monitoring the running time, the carbon loading amount in the DPF, the pressure difference of the DPF, the T4 temperature and the T5 temperature, and therefore the method can select to enter active regeneration immediately or delay to enter the active regeneration; when the T4 temperature is kept above the first temperature for more than the first time and the T5 temperature is kept above the second temperature for more than the second time, the engine can be judged to operate under the high-temperature working condition; the control of DPF active regeneration by the process improvement is more accurate and flexible, so that the method can comprehensively judge the working condition of the engine, and the time of DPF active regeneration is controlled in a high-temperature time interval in the engine on the premise of ensuring the safe work of the DPF, so that extra oil injection is reduced, and the advantage of good economy of DPF active regeneration under the high-temperature working condition is fully exerted.
In this embodiment, specific values of the first temperature, the second temperature, the first time, the second time, the third time, the fourth time, the first threshold, the second threshold, and the differential pressure threshold are not limited, and the selection of the actual value of each parameter needs to be determined according to the actual application scene environment and the working condition of the engine. The selection of specific values is a conventional technique in the art, is well known to those skilled in the art, and is not described herein.
The parameters for determining whether the DPF is actively regenerated may be added or subtracted based on the parameters provided in this embodiment. In other embodiments of this embodiment, monitoring of the engine mileage, the load rate, and the fuel consumption cycle is added, and a determination can be made as to whether the DPF is actively regenerated immediately or not according to the results of the comparison of the values of the engine mileage, the load rate, and the load threshold, and the comparison of the values of the fuel consumption cycle and the fuel consumption threshold. The parameter may also be engine speed, engine torque or water temperature, etc.
The number of thresholds to be compared with the parameters is not fixed, and can be added or subtracted on the basis of the parameters provided by the embodiment. In other embodiments of this embodiment, engine mileage monitoring is added; and judging whether the temperature T4 is kept above the first temperature for more than a first time, whether the temperature T5 is kept above the second temperature for more than a second time and whether the engine mileage is accumulated for more than a first mileage threshold, if so, actively regenerating the DPF, otherwise, judging whether the engine mileage is accumulated for more than a second mileage threshold, if so, actively regenerating the DPF, and if not, judging other parameters.
In this embodiment, step eight is followed by the following steps:
step nine: judging whether the time of the DPF kept above the regeneration temperature is accumulated to exceed the regeneration time or not, if so, performing the step ten, and if not, returning to the step eight;
step ten: the DPF stops active regeneration and then returns to step two.
By means of the steps, the control of the time and the temperature of the DPF active regeneration can be completed, the active regeneration can be smoothly and efficiently completed, and the DPF can be stopped in time after the active regeneration is completed.
Preferably, the regeneration time is 20 minutes and the regeneration temperature is 550 ℃. At the moment, the regeneration temperature of the DPF is not lower than 550 ℃ under the monitoring condition, the regeneration time of the DPF is the accumulated time of the T5 temperature kept above 550 ℃ after the system enters the active regeneration, and after 20 minutes, the DPF is judged to be successfully regenerated, and the DPF stops the active regeneration.
From experimental data, it can be seen that the active regeneration process of the DPF can be completed when the regeneration time is between 10 minutes and 20 minutes, and in this embodiment, the regeneration time is set to 20 minutes to ensure complete regeneration.
In this embodiment, the fourth time is greater than the third time; the first threshold is greater than the second threshold. The effect of protecting the DPF can be played by the aid of the arrangement, the situation that the DPF does not trigger active regeneration for a long time is avoided by the arrangement of the fourth time and the second threshold value, the risk of DPF damage is reduced, and the service life of the DPF is prolonged.
As shown in fig. 1 and fig. 2, the present embodiment further provides a DPF active regeneration control system, which can be applied to the above-mentioned DPF active regeneration control method, and the DPF active regeneration control system includes a processing component 100, a calculating component 200, a determining component 300, and an electronic control component 400; the processing assembly 100 is used for recording the time kept after the T4 temperature exceeds the first temperature, the time kept after the T5 temperature exceeds the second temperature, the carbon loading in the DPF and the pressure difference of the DPF when the engine runs; the calculation component 200 is used to accumulate the operating duration of the engine; the judging component 300 is used for comparing the time kept after the T4 temperature exceeds the first temperature with the first time, the time kept after the T5 temperature exceeds the second temperature with the second time, the carbon loading in the DPF with the first threshold and the second threshold, the running time of the engine with the third time and the fourth time, and the pressure difference of the DPF with the pressure difference threshold; the electronic control module 400 is configured to send DPF active regeneration request/DPF stop regeneration request to perform active regeneration/active regeneration stop of the DPF.
The DPF active regeneration control system can complete monitoring, statistics, calculation and comparison operations of various parameters by utilizing the arrangement of the processing component 100, the calculating component 200 and the judging component 300, so that accurate judgment can be made for various parameters, and then an electric control component 400 is utilized to send a result for starting or stopping triggering the DPF active regeneration mode to the DPF.
In this embodiment, the processing assembly 100 includes a temperature measuring unit, a first timing unit, a second timing unit, a metering unit and a pressure measuring unit; the temperature measuring unit is used for measuring T4 temperature and T5 temperature; when the temperature T4 exceeds the first temperature, the first timing unit starts timing, and when the temperature T5 exceeds the second temperature, the second timing unit starts timing; the metering unit is used for measuring the carbon loading amount in the DPF, and the pressure measuring unit is used for measuring the pressure difference of the DPF.
Preferably, the calculation component 200 comprises a third timing unit which starts timing when the engine is started.
Specifically, the above components all adopt a communication connection mode to transmit information, and the temperature measuring unit, the metering unit and the pressure measuring unit are all sensors. The structure has the advantages of simplicity, reliability, convenience in maintenance, small occupied space, stability in working and low production cost.
Further, when the DPF is actively regenerated, the timing of the first timing unit and the second timing unit is cleared; and when the DPF carries out active regeneration, the timing of the third timing unit is cleared.
Due to the zero clearing design of timing, the timing of the next working period of the first timing unit, the second timing unit and the third timing unit is facilitated, the DPF active regeneration control system can accurately operate, and the working efficiency of the DPF active regeneration control system is greatly improved.
In a suitable temperature range, part of NO in DOC is oxidized into NO 2 Due to NO 2 Has strong oxidizing property to C, and can react with carbon deposit in DPF to generate CO 2 And CO, therefore, the need to remove NO in the model 2 Carbon loading consumed by oxidation. When the exhaust temperature is more than 450 ℃, carbon deposition in the DPF and residual O in the exhaust gas 2 Combustion and CO formation 2 And CO, this partially consumed carbon loading must also be removed in the model. In order to accurately calculate the carbon loading in the DPF, the metering unit needs to calculate the emission of bare engine particles according to NO when measuring x Oxidation model and O 2 And the thermal regeneration model is used for calculating to obtain accurate carbon loading in the DPF according to the model calibrated by the metering unit.
After the active regeneration mode of the DPF is triggered, the DPF active regeneration control system controls the engine to perform combined control by utilizing one or more of components such as an air inlet throttle valve, an exhaust gas recirculation valve, in-cylinder after-injection and the like, the exhaust temperature is raised to the DPF regeneration temperature, and the regeneration time is kept.
In other embodiments of this embodiment, the active regeneration of the DPF may be prematurely ended before the regeneration time is reached when a successful regeneration flag is present during the regeneration process. The regeneration success flag positions include the following cases: and on the premise of simultaneously meeting the condition that the running time exceeds the third time and the carbon loading in the DPF is greater than the first threshold value, the carbon loading in the DPF is prior to the situation that the regeneration is successful in the running time. The active regeneration mode of the DPF is stopped early at this point so that one complete DPF active regeneration is complete.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A DPF active regeneration control method comprising the steps of:
s110, starting an engine;
s120, monitoring the running time of the engine, the carbon loading in the DPF, the pressure difference of the DPF, the T4 temperature and the T5 temperature;
s210, judging whether the T4 temperature is kept above a first temperature for more than a first time, whether the T5 temperature is kept above a second temperature for more than a second time and whether the running time of the engine is accumulated for more than a third time, if so, performing S310, otherwise, performing S220;
s220, judging whether the running time of the engine is accumulated to exceed a fourth time, if so, performing S310, and if not, performing S230;
s230, judging whether the T4 temperature is kept above a first temperature for more than a first time, the T5 temperature is kept above a second temperature for more than a second time and the carbon loading amount in the DPF is more than a first threshold value, if so, performing a step S310, otherwise, performing a step S240;
s240, judging whether the carbon loading in the DPF is larger than a second threshold value, if so, performing the step S310, and if not, performing the step S250;
s250, judging whether the DPF pressure difference is larger than a pressure difference threshold value, if so, performing a step S310, otherwise, returning to the step S120;
and S310, performing active regeneration on the DPF.
2. The DPF active regeneration control method of claim 1, comprising the following steps after step S310:
s320, judging whether the time of keeping the DPF at the regeneration temperature or above is accumulated and exceeds the regeneration time, if so, performing a step S330, otherwise, returning to the step S310;
s330, the DPF stops active regeneration, and then returns to step S120.
3. The DPF active regeneration control method of claim 2, wherein the regeneration time is 20 minutes and the regeneration temperature is 550 degrees celsius.
4. A DPF active regeneration control system applicable to the DPF active regeneration control method according to any one of claims 1 to 3, comprising:
a processing assembly (100) for recording the time said T4 temperature remains above said first temperature, the time said T5 temperature remains above said second temperature, the carbon loading within said DPF, and said DPF pressure differential while the engine is running;
a calculation component (200) for accumulating an operating time period of the engine;
a determining component (300) for comparing the time after the T4 temperature exceeds the first temperature with the first time, the time after the T5 temperature exceeds the second temperature with the second time, the amount of carbon loading in the DPF with the first threshold and the second threshold, the amount of operation time of the engine with the third time and the fourth time, and the amount of the DPF pressure difference with the pressure difference threshold;
and an electronic control component (400) for sending DPF active regeneration request/regeneration stop request to the DPF to make the DPF perform active regeneration/active regeneration stop.
5. The DPF active regeneration control system of claim 4, wherein the processing assembly (100) comprises a temperature measurement unit, a first timing unit and a second timing unit; the temperature measuring unit is used for measuring the T4 temperature and the T5 temperature; when the T4 temperature exceeds the first temperature, the first timing unit starts timing, and when the T5 temperature exceeds the second temperature, the second timing unit starts timing.
6. The DPF active regeneration control system of claim 4, wherein the processing assembly (100) includes a metering unit for measuring carbon loading in the DPF.
7. The DPF active regeneration control system of claim 4, wherein said processing assembly (100) comprises a load cell for measuring said DPF differential pressure.
8. The DPF active regeneration control system of claim 5, wherein the timing of the first timing unit and the second timing unit is cleared when the DPF is actively regenerating.
9. The DPF active regeneration control system of claim 6, wherein the calculation component (200) comprises a third timing unit that starts timing when the engine is started.
10. The DPF active regeneration control system of claim 9, wherein the timing of the third timing unit is cleared when the DPF is actively regenerating.
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