CN107152331A - DPF initiative regeneration state machine control methods based on burner - Google Patents
DPF initiative regeneration state machine control methods based on burner Download PDFInfo
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- CN107152331A CN107152331A CN201710407693.XA CN201710407693A CN107152331A CN 107152331 A CN107152331 A CN 107152331A CN 201710407693 A CN201710407693 A CN 201710407693A CN 107152331 A CN107152331 A CN 107152331A
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- regeneration
- dpf
- state
- temperature
- burner
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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
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
- F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
-
- 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
- F01N3/025—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 using fuel burner or by adding fuel to exhaust
- F01N3/0253—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 using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
- F01N3/0256—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 using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases the fuel being ignited by electrical means
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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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
- F01N2900/1404—Exhaust gas temperature
-
- 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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
- F01N2900/1406—Exhaust gas pressure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The present invention provides a kind of DPF initiative regeneration state machine control methods based on burner, including：Engine operating condition information, the exhaust temperature signal of engine, the flame intensity signal of burner, microparticles collection device DPF inlet temperature signal, DPF pressure difference signals and DPF outlet temperature signal are monitored in real time；Preset trigger condition is met in response to the monitoring information monitored, according to the corresponding control strategy of preset trigger condition, into different dpf regeneration states, the dpf regeneration state includes regeneration holding state, regeneration temperature rising state, regeneration igniting status of fail, regeneration temperature rise status of fail, regeneration beginning state, regeneration status of fail, reproductive success state and regeneration empty.The present invention improves the efficiency of combustion and functional reliability of burner, by the control in regenerative process to burner intermediateness, is conducive to improving dpf regeneration process completeness, reduces regeneration failure equivalent risk.
Description
Technical field
The present invention relates to oil spout active regeneration techniques field, and in particular to a kind of DPF initiative regeneration shapes based on burner
State machine control method.
Background technology
With China atmospheric environment deteriorate and Abgasgesetz it is increasingly strict, diesel vehicle installs DPF from the stage of V/state of capital VI
(Diesel Particulate Filter diesel particulate filters) becomes everybody common recognition and the technology of unique feasible is arranged
Apply.Dpf regeneration burner belongs to oil spout active regeneration techniques field, and the carbon in DPF is exactly burnt using fuel oil exothermic energy
Cigarette makes it recover normal working condition.
The combustion-supporting regeneration of burner oil spout needs to have the grey carrying capacity model of DPF carbon, temperature control, IGNITION CONTROL, regenerative process
The major control modules such as state machine control, failure handling mechanisms.Current technology is focused primarily upon to DPF active regeneration system functions
Journal of Sex Research, substantially equal to meet the Functional Requirement of regeneration, relatively more general and rough, the key link to regeneration is controlled more
Shortcoming.Such as patent document 1 discloses a kind of combustion-supporting regeneration temperature control method of DPF diesel particulate filtrations system oil spout, it leads to
Excess temperature sensor gathers DPF system Temperature numerical in real time, sends it to ECU, and ECU is logical according to Temperature numerical
Cross open loop control algorithm and add closed loop PID control algorithm to calculate and DPF filter Current Temperatures are adjusted to needed for target temperature
Fuel injection amount, and corresponding pulse width signal driving fuel regulator valve is translated into, realize to DOC diesel oxidation catalysts
The accurate control of fuel injection amount before (Diesel Oxidation Catalyst, DOC) catalyst converter, to control engine exhaust
Temperature, and then control DPF filter temperatures.Patent document 2 discloses that a kind of DPF active regeneration systems with burner, its
Disclosed burner and engine by single oil circuit, are driven by single oil pump respectively, and the blast pipe of burner is connected to
Oxidation catalyzer and grain catcher device are sequentially connected in series on the exhaust pipe of engine, the exhaust pipe of engine, in oxidation catalyzer
Temperature sensor is respectively equipped with the front end of grain catcher, air inlet, outlet side concatenation differential pressure pickup in grain catcher；
ECU ECU controls the glow plug in the oil spout of burner oil pump and burner to draw according to the temperature signal and pressure signal of collection
Combustion, then produces high-temperature gas, and high-temperature gas imports the exhaust pipe of engine and the waste gas in blast pipe is heated, the waste gas after heating
Further heated up through DOC oxidations, realize the granules regeneration in DPF.
However, the DPF active regeneration control methods that patent document 1 and patent document 2 are used are to be based on simple temperature PID control
What the algorithm of system was carried out, it is impossible to realize the high-efficiency operation of burner, it frequently can lead to burning and deteriorate, and in burner operation
Regenerative process intermediateness can not accurately be judged and effective and safe protection, easily cause regeneration thoroughly or regenerate it is uncontrollable,
Regenerative process control is relatively rough.
It would therefore be highly desirable to a kind of DPF initiative regeneration controlling parties that Precise control is carried out to dpf regeneration process status machine occur
Case.
【The patent document of reference】
Patent document 1：Chinese invention Patent Application Publication No.CN 104454085A；
Patent document 2：Chinese utility model Patent Application Publication No.CN 204299654U
The content of the invention
To solve problems of the prior art, the invention provides a kind of DPF initiative regeneration shapes based on burner
State machine control method, it is intended to solve generally existing regenerative process state machine in DPF burners Strategy for Regeneration Control in the prior art
The problems such as control lacks or rough, regeneration failure handling mechanisms lack or be rough.
The technical solution adopted by the present invention is：
The present invention provides a kind of DPF initiative regeneration state machine control methods based on burner, including：To engine operating condition
Information, the exhaust temperature signal of engine, the flame intensity signal of burner, microparticles collection device DPF inlet temperature signal,
DPF pressure difference signals and DPF outlet temperature signal are monitored in real time；Default triggering is met in response to the monitoring information monitored
Condition, according to the corresponding control strategy of preset trigger condition, into different dpf regeneration states, the dpf regeneration state includes
Regenerate holding state, regeneration temperature rising state, regeneration igniting status of fail, regeneration temperature rise status of fail, regeneration beginning state, regeneration
Status of fail, reproductive success state and regeneration empty；Wherein, the regeneration holding state indicates that each operation element is normal,
Etc. state to be regenerated, in this condition, persistently regeneration triggering condition is monitored；The regeneration temperature rising state indicates to pass through
The EGT that fuel injection system is discharged to engine is heated to the state of the regeneration temperature of demarcation；The regeneration loss of ignition
State instruction fuel injection system is in setting time without successful state of lighting a fire；The regeneration temperature rise status of fail is indicated
In setting time, DPF inlet temperature is not reaching to the state of the regeneration temperature of demarcation；The regeneration starts state instruction and set
In fixing time, DPF inlet temperature reaches the regeneration temperature of demarcation so that the state that the carbon in DPF is burnt；The regeneration
Status of fail instruction is in setting time, the state that the carbon inside the DPF is not removed successfully；The reproductive success state
Indicate in setting time, the state that the carbon inside the DPF is successfully removed；The regeneration empty is indicated burner
In fuel injection system in fuel oil empty with prevent from being deposited at nozzle formed carbon distribution state.
Alternatively, it is standby into regenerating when the monitoring information monitored, which characterizes each operation element, is in normal condition
State, and regeneration triggering condition is continued to monitor, in the case where regeneration triggering condition is triggered, into regeneration temperature rising state；Institute
State under regeneration temperature rising state, DPF control units control the fuel injection system to carry out oil spout according to predetermined fuel injection amount
And control igniting actuator to perform the waste gas that firing action is discharged with heated engine, detect and lighted a fire successfully in setting time
When, control the inlet temperature of the DPF to rise according to the temperature rise rate of demarcation, and in setting time the DPF entrance temperature
Degree enters regeneration beginning state in the case of reaching the regeneration temperature of demarcation；Under the regeneration beginning state, the DPF is controlled
In carbon burnt under the regeneration temperature of the demarcation, and in the case of meeting reproductive success condition in setting time,
Into reproductive success state；Under the reproductive success state, the value of reproductive success number of times accumulator is added 1, control regeneration time
The value of number accumulator adds 1 and resets regeneration mileage counter, and enters regeneration empty.
Alternatively, in addition to：When igniting is detected in setting time without success, into regeneration igniting status of fail；
When the inlet temperature that the DPF is detected in setting time is not reaching to the regeneration temperature of demarcation, into the regeneration temperature rise
Status of fail, and record causes the reason for the reason for temperature rise fails is with system functionality failure；And detected in setting time
To when not meeting reproductive success condition, into regeneration status of fail, and record regenerating performance level, regeneration failure cause.
Alternatively, the regeneration triggering condition meets preset pressure value including DPF pressure differences, regenerates the mileage of mileage counter
Meet default mileage value, the default carbon carrying capacity value of carbon carrying capacity satisfaction of DPF trappings, engine operating condition and meet default operating mode；It is described again
Raw success conditions are characterized in setting time, and the carbon in the DPF is successfully removed.
Alternatively, under the regeneration temperature rising state, if the flame intensity that burner is detected in setting time is big
In preset strength, it indicates that light a fire successfully；Under the regeneration igniting status of fail, the DPF control units control the point
Fiery actuator continues executing with firing action, if the number of times lighted a fire again is less than setting number of times, it indicates that light a fire again successfully.
The DPF initiative regeneration state machines control method based on burner that the present invention is provided is combustion-supporting again using burner oil spout
Raw process status machine control, accurately judges current DPF carbon/ash carrying capacity, fired state, temperature control status, regeneration carry out state
Deng committed step during dpf regeneration, refine and clearly current DPF states, the efficiency of combustion and work for improving burner can
By property, the difficult point that burner intermediateness during dpf regeneration can not be judged accurately is solved, by regenerative process burner
Between state machine control, be conducive to improve dpf regeneration process completeness, reduce regeneration failure equivalent risk, it is ensured that regenerative process
It is safe and reliable.
Brief description of the drawings
Fig. 1 is the structural representation of DPF active regeneration systems provided in an embodiment of the present invention.
Fig. 2 is the schematic diagram that the embodiment of the present invention provides the DPF initiative regeneration state machine control methods based on burner.
Fig. 3 is the specific stream of the DPF initiative regeneration state machine control methods provided in an embodiment of the present invention based on burner
Journey schematic diagram.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached in the embodiment of the present invention
Figure, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is the present invention
A part of embodiment, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having
The every other embodiment obtained under the premise of creative work is made, the scope of protection of the invention is belonged to.
Fig. 1 is the structural representation for the DPF active regeneration systems that one embodiment of the invention is provided.As shown in figure 1, of the invention
It is (following that the dpf regeneration active regeneration system that embodiment is provided includes burner 3, microparticles collection device DPF5, DPF control unit
Abbreviation DCU) 4, described one end of burner 3 is connected with the blast pipe of engine 1, the other end and DPF5 entrance point connection, described
DPF control units 4 are communicated to connect with control unit of engine ECU2 by CAN communication, obtain engine operating condition information, described
DPF control units 4 pass through the temperature sensor being placed on the blast pipe, the light sensor being placed on the burner
Device, the temperature sensor on placement DPF entrance and exit and pressure sensor are obtained in the blast pipe in real time
Exhaust temperature signal, the flame intensity signal of burner, DPF inlet temperature signal, DPF pressure difference signals and DPF outlet
Temperature signal.
Information of the DCU based on acquisition, to dpf regeneration opportunity rationally judge and controls regenerative process in real time.When DPF is caught
When the carbon trapped in storage reaches regeneration triggering limit value, DCU control burners carry out oil spout firing action, and waste gas is added
Heat, rises to regeneration temperature according to the temperature program heating of safety by DPF inlet temperatures and is stably maintained at the temperature, regeneration is opened
Begin, the signal such as regenerative process monitoring pressure difference, temperature is judged regeneration level according to Regeneration control logic, after regeneration ending
Record regenerating result, is inputted as the judgement regenerated next time.
Hereinafter, the specific control process to DCU is described.
Another embodiment of the present invention provides a kind of DPF initiative regeneration state machine control methods based on burner, the party
Dpf regeneration active regeneration system that method is described by above-described embodiment is realized.As shown in Fig. 2 this method includes：
S10, flame intensity signal, particulate to engine operating condition information, the exhaust temperature signal of engine, burner are caught
The outlet temperature signal of acquisition means DPF inlet temperature signal, DPF pressure difference signals and DPF is monitored in real time.
S20, in response to the monitoring information monitored preset trigger condition is met, according to the corresponding control of preset trigger condition
Strategy, into different dpf regeneration states, the dpf regeneration state includes regeneration holding state, regeneration temperature rising state, regeneration
Loss of ignition state, regeneration temperature rise status of fail, regeneration beginning state, regeneration status of fail, reproductive success state and regeneration are clear
Dummy status.
Wherein, the regeneration holding state indicates that each operation element is normal, waits state to be regenerated, in this condition, hold
It is continuous that regeneration triggering condition is monitored；The regeneration temperature rising state indicates to give up to engine discharge by fuel injection system
Temperature degree is heated to the state of the regeneration temperature of demarcation；The regeneration igniting status of fail indicates fuel injection system in setting
Interior no successful state of lighting a fire；The regeneration temperature rise status of fail indicates that in setting time DPF inlet temperature does not have
Reach the state of the regeneration temperature of demarcation；The regeneration starts state instruction in setting time, and DPF inlet temperature reaches mark
Fixed regeneration temperature so that the state that the carbon in DPF is burnt；The regeneration status of fail instruction is in setting time, institute
State the state that the carbon inside DPF is not removed successfully；The reproductive success state instruction is in setting time, in the DPF
The state that the carbon in portion is successfully removed；The regeneration empty indicates the fuel oil in the fuel injection system in burner is clear
The empty state to prevent from being deposited in formation carbon distribution at nozzle.Above-mentioned 8 reproduced states are previously stored in DPF control units,
It can be entered according to different preset trigger conditions, the trigger condition for judging whether to enter different reproduced states is based on monitoring
Monitoring information is then discussed in greater detail come what is determined.
In the present invention, DPF control units can obtain above-mentioned monitoring information in real time by corresponding sensor, and be based on
The monitoring information of acquisition controls to enter corresponding state machine, and is recorded accordingly, defeated using the judgement that is regenerated as next time
Enter.
Specifically, it is standby into regenerating when the monitoring information monitored, which characterizes each operation element, is in normal condition
State, and regeneration triggering condition is continued to monitor, in the case where regeneration triggering condition is triggered, into regeneration temperature rising state.At this
In invention, each operation element, which is in normal condition, mainly includes dpf regeneration system failure, electric fault-free etc., in regeneration
Under holding state, engine on time during recording distance last time successful regeneration is understood, and meeting regeneration triggering condition is continued
Monitoring.The regeneration triggering condition meets preset pressure value including DPF pressure differences, the mileage of regeneration mileage counter is met in presetting
Journey value, the carbon carrying capacity of DPF trappings meet default carbon carrying capacity value, the default operating mode of engine operating condition satisfaction such as vehicle and are in normal row
State is sailed, preset pressure value, default mileage value and default carbon carrying capacity value are demarcated according to actual conditions.Each operation element includes
Vehicle electrical systems, operation element fault-free of active regeneration system etc..
Wherein, under the regeneration temperature rising state, the fuel injection system in DPF control units control burner is according to pre-
Fixed fuel injection amount carries out oil spout and controls igniting actuator to perform the waste gas that firing action is discharged with heated engine, is setting
Detect in fixing time when light a fire successfully, control the inlet temperature of the DPF according to the temperature rise rate rising of demarcation, and setting
The inlet temperature of the DPF enters regeneration beginning state in time in the case of reaching the regeneration temperature of demarcation.In the present invention,
The regeneration temperature of demarcation refers to the initiative regeneration temperature that the carbon and oxygen that meet DPF trappings react, and the temperature passes through placement
Obtained in the feedback signal of the temperature sensor of DPF porch.Also, if light sensor is detected in setting time
The flame intensity of burner is more than preset strength, it indicates that light a fire successfully.
Under the regeneration beginning state, DPF control units control the carbon in the DPF in the regeneration temperature of the demarcation
It is lower to be burnt, and in the case of meeting reproductive success condition in setting time, into reproductive success state, and control regeneration
The value of number of times accumulator adds 1 and resets regeneration mileage counter.The reproductive success condition of the present invention is characterized in setting time,
Carbon in the DPF is successfully removed.Under regeneration beginning state, the regeneration temperature of DPF inlet temperature stability contorting in demarcation
Near degree, and the signal such as monitoring DPF pressure difference, inlet temperature and outlet temperature in real time, it is carbon carrying capacity according to Strategy for Regeneration Control
Model and pressure difference model, which are provided, calculates input, complete in the carbon for judging DPF to judge in real time regeneration performance level
In the case of removing, into reproductive success state.In addition, under reproductive success state, DPF control units are by reproductive success number of times
The value of accumulator adds 1, and enters regeneration empty.Also, under regeneration empty, fuel oil is not present in fluid power pipeline,
And there is cooling protection of the lasting cooling design or action to carry out at nozzle.
In the present invention, Strategy for Regeneration Control refers to the condition judgment started according to which kind of condition as regeneration, and foundation
Regenerative system characteristic (fuel oil jet ignition system and DPF traps) and process performance, are made as to when regeneration, how to regenerate, then
How long is life, regenerates the general name of the overall process method and steps of control and the monitoring of quality, carbon carrying capacity model is according to various sensings
The input of device signal, extrapolates a kind of algorithm of the weight of the carbon trapped in current DPF carriers, the carbon and DPF of DPF trappings indirectly
Pressure difference, the exhaust gas flow of temperature and engine etc. between there is corresponding relation, the corresponding relation between them can be according to reality
Border experience generates mapping table, can be stored in advance in DPF control units.Pressure difference model is to be according to DPF pressure difference signals
DPF carbon carrying capacity model provides pressure difference signal input, and the algorithm of Credibility judgement and signal transacting is carried out to original pressure difference signal.
Further, the DPF initiative regeneration state machine control methods of the invention based on burner also include：In setting
In detect igniting without success when, into regeneration light a fire status of fail；The entrance of the DPF is detected in setting time
When temperature is not reaching to the regeneration temperature of demarcation, into the regeneration temperature rise status of fail, and the original for causing temperature rise to fail is recorded
The reason for because with system functionality failure；And detected in setting time when not meeting reproductive success condition, into again
Raw status of fail, and record regenerating performance level, regeneration failure cause.
Specifically, if in setting time, the flame intensity of light sensor detection is not greater than preset strength, then refers to
Show loss of ignition, into regeneration igniting status of fail.Under regeneration igniting status of fail, DPF control units can control the point
Fiery actuator continues executing with firing action, if the number of times that igniting actuator is lighted a fire again is less than setting number of times, it indicates that again
Light a fire successfully, otherwise close igniting.Regenerate performance level can by pressure difference, temperature, engine discharge exhaust gas flow signal and
Carbon carrying capacity model etc. judges in carrier residual carbon carrying capacity to determine indirectly, for example, can be stored in by access in DPF control units
Mapping table determine.
Above-mentioned regeneration times accumulator can be the module being arranged in DPF control units with regeneration mileage counter.
In the specific implementation of the present invention, as shown in figure 3, the DPF initiative regeneration states based on burner of the present invention
Machine control method may particularly include following steps：
S101, in the case of each operation element is trouble-free, into regeneration holding state, lasting monitoring regeneration triggering bar
Part.
S102, the information based on monitoring, judge whether to trigger regeneration condition, if triggering regeneration condition, into step
S103, otherwise, into step S101.
S103, into regeneration temperature rising state, control the burner to carry out oil spout igniting according to predetermined fuel injection amount
Act the waste gas discharged with heated engine；Into step S104.
S104, judge success of whether being lighted a fire in setting time, if lighted a fire successfully, into step S105, otherwise, enter
Step S106.
S105, control DPF inlet temperature rise according to the temperature rise rate of demarcation；Into step S108.
S106, into igniting status of fail, control igniting actuator carry out setting number of times firing action, into step
S107。
Whether the number of times that S107, judgement are lighted a fire again exceedes setting number of times, if less than setting number of times, into step
S108, otherwise, into step S115.
S108, judge whether DPF inlet temperature reaches the regeneration temperature of demarcation, if having reached the regeneration temperature of demarcation
Degree, into step S109, otherwise, into step S110.
S109, into regeneration beginning state, control the carbon in the DPF to be fired under the regeneration temperature of the demarcation
Burn, and control the value of regeneration times accumulator plus 1 and reset regeneration mileage counter；Into step S111.
S110, into regeneration temperature rise status of fail, the reason for the reason for temperature rise fails is with system functionality failure will be caused
Recorded；Into step S115.
S111, judge whether to meet reproductive success condition, if it is satisfied, into step S114, otherwise, into step
S112, the carbon particle that the reproductive success condition characterizes the trapping inside the DPF is successfully removed.
S112, into regeneration status of fail, record regenerating performance level and regeneration failure cause；Into step S113.
S113, judge whether to meet the condition regenerated again, if it is satisfied, into step S109, otherwise, into step
S115。
S114, into reproductive success state, the value of control reproductive success number of times accumulator adds 1；Into step S115.
S115, into regeneration empty, control oil burner fuel injection system in fuel oil empty.
To sum up, the regenerative process state machine control method that the present invention is provided, improves efficiency of combustion and the work of burner
Reliability, solves the difficult point that burner intermediateness during dpf regeneration can not be judged accurately, passes through regenerative process burner
The control of intermediatenesses machine, is conducive to improving dpf regeneration process completeness, reduces regeneration failure equivalent risk.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, it can also make and be suitably modified and deform, these improve and deformed
Also it should be regarded as protection scope of the present invention.
Claims (5)
1. a kind of DPF initiative regeneration state machine control methods based on burner, it is characterised in that including：
To engine operating condition information, the exhaust temperature signal of engine, burner flame intensity signal, microparticles collection device
The outlet temperature signal of DPF inlet temperature signal, DPF pressure difference signals and DPF is monitored in real time；
Preset trigger condition is met in response to the monitoring information monitored, according to the corresponding control strategy of preset trigger condition, is entered
Enter different dpf regeneration states, the dpf regeneration state includes regeneration holding state, regeneration temperature rising state, regeneration loss of ignition
State, regeneration temperature rise status of fail, regeneration beginning state, regeneration status of fail, reproductive success state and regeneration empty；
Wherein, the regeneration holding state indicates that each operation element is normal, waits state to be regenerated, in this condition, persistently right
Regeneration triggering condition is monitored；The regeneration temperature rising state indicates the waste gas temperature discharged by fuel injection system to engine
Degree is heated to the state of the regeneration temperature of demarcation；The regeneration igniting status of fail indicates fuel injection system in setting time
Do not light a fire successful state；The regeneration temperature rise status of fail indicates that in setting time DPF inlet temperature is not reaching to
The state of the regeneration temperature of demarcation；The regeneration starts state instruction DPF inlet temperature in setting time and reaches demarcation
Regeneration temperature so that the state that the carbon in DPF is burnt；The regeneration status of fail instruction is in setting time, the DPF
The state that internal carbon is not removed successfully；The reproductive success state instruction is in setting time, the carbon inside the DPF
The state successfully removed；It is described regeneration empty indicate by the fuel oil in the fuel injection system in burner empty to prevent
Only it is deposited in the state that carbon distribution is formed at nozzle.
2. the DPF initiative regeneration state machine control methods according to claim 1 based on burner, it is characterised in that
When the monitoring information monitored, which characterizes each operation element, is in normal condition, into regeneration holding state, and continue
Regeneration triggering condition is monitored, in the case where regeneration triggering condition is triggered, into regeneration temperature rising state；
Under the regeneration temperature rising state, DPF control units control the fuel injection system according to predetermined fuel injection amount
Carry out oil spout and control igniting actuator to perform the waste gas that firing action is discharged with heated engine, detected in setting time
When lighting a fire successfully, the inlet temperature of the DPF is controlled to rise according to the temperature rise rate of demarcation, and the DPF in setting time
Inlet temperature reach the regeneration temperature of demarcation in the case of enter regeneration beginning state；
Under the regeneration beginning state, the carbon in the DPF is controlled to be burnt under the regeneration temperature of the demarcation, and control
The value of preparation, regeneration number of times accumulator adds 1 and resets regeneration mileage counter, and meets in setting time reproductive success condition
In the case of, into reproductive success state；
Under the reproductive success state, the value of reproductive success number of times accumulator is added 1, and enters regeneration empty.
3. the DPF initiative regeneration state machine control methods according to claim 2 based on burner, it is characterised in that also
Including：
When igniting is detected in setting time without success, into regeneration igniting status of fail；
When the inlet temperature that the DPF is detected in setting time is not reaching to the regeneration temperature of demarcation, into the regeneration
Temperature rise status of fail, and record causes the reason for the reason for temperature rise fails is with system functionality failure；And
Detected in setting time when not meeting reproductive success condition, into regeneration status of fail, and record regenerating is completed
Degree, regeneration failure cause.
4. the DPF initiative regeneration state machine control methods according to claim 3 based on burner, it is characterised in that institute
State regeneration triggering condition including DPF pressure differences meet preset pressure value, regenerate mileage counter mileage meet default mileage value,
The carbon carrying capacity of DPF trappings meets default carbon carrying capacity value, engine operating condition and meets default operating mode；
The reproductive success condition is characterized in setting time, and the carbon in the DPF is successfully removed.
5. the DPF initiative regeneration state machine control methods according to claim 3 based on burner, it is characterised in that
Under the regeneration temperature rising state, if the flame intensity that burner is detected in setting time is more than preset strength,
Then indicate to light a fire successfully；
Under the regeneration igniting status of fail, the DPF control units control igniting actuator performs setting number of times
Firing action, if the number of times lighted a fire again is less than setting number of times, it indicates that light a fire again successfully.
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Application publication date: 20170912 |