CN108412588A - Diesel particulate filter control system - Google Patents
Diesel particulate filter control system Download PDFInfo
- Publication number
- CN108412588A CN108412588A CN201810082281.8A CN201810082281A CN108412588A CN 108412588 A CN108412588 A CN 108412588A CN 201810082281 A CN201810082281 A CN 201810082281A CN 108412588 A CN108412588 A CN 108412588A
- Authority
- CN
- China
- Prior art keywords
- regeneration
- particulate filter
- threshold value
- mode
- combustion engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- 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
- 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
- F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
- F01N2900/1606—Particle filter loading or soot amount
-
- 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
Landscapes
- 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 present invention provides a kind of diesel particulate filter control system, and the different operating mode of diesel particulate filter is arranged in the controls；By the running parameter for monitoring vehicle, internal combustion engine, particulate filter, including VMT Vehicle-Miles of Travel, I. C. engine exhaust temperature, particulate filter pressure difference, particle loaded rate, judge the operating mode of particulate filter, including normal mode of operation, chance regeneration mode, high-speed requests pattern, maintenance service request mode, limp-home mode and initiative regeneration pattern；Different treatment measures are taken vehicle, internal combustion engine and particulate filter under different working modes, to ensure the effective regeneration of traffic safety and particulate filter.
Description
Technical field
The present invention relates to field of internal combustion engine, especially a kind of diesel particulate filter method for controlling reproduction and control system
System.
Background technology
Chinese patent CN100549377C provides a kind of control method and waste gas cleaning system of waste gas cleaning system,
In the case that DPF device forced regeneration starts forced regeneration again after interrupting, it also can fully be flared off and be caught i.e. and accumulated by DPF
Tired PM（PM is the english abbreviation of particle matter Particulate Matter）.The technological means and reach effect that the patent is taken
Fruit is：Amount of collected region detection mechanism, operating range region detection mechanism are set, start to force again again after forced regeneration interrupts
In the case of life, if the amount of collected region detected at this time by amount of collected region detection mechanism is than the amount of collected area after just interrupting
Domain is big, or the operating range region detected by operating range region detection mechanism is than the operating range region after just interrupting
Greatly, then forced regeneration is proceeded by from initially, in the other cases, the then forced regeneration of last time, with last time forced regeneration
The remaining time of control carries out forced regeneration.The deficiency of the patent and the reason is that：Start to force again again after forced regeneration interruption
When raw, when amount of collected region or operating range region are smaller than the regional value after just interrupting, cigarette not can determine that in this case
The size of load capacity is spent, if vehicle longtime running load is larger, the higher operating mode of engine row's temperature, can lead to particle filtering
Device spontaneous regeneration, smoke intensity load can be gradually decrease to very low level, still be gone at this time with the rigid remaining time interrupted after regenerating
Forced regeneration is carried out, oil dilution degree and fuel consumption can be increased.
Chinese patent application CN101410596A provides the control newer control systems of DPF, passes through combustion during advantage
Captured cigarette ash is burnt, mandatory update is postponed, to reduce the quantity of captured cigarette ash, reduces the average back of the body on engine
Pressure.Technological means that the patent is taken and reaches effect and be：When the practical soot loads of DPF are more than max-thresholds, carry out strong
System update；When practical soot loads reach a threshold value smaller than max-thresholds, and engine operation condition is conducive to DPF more
When new, start to update；When soot loads are reduced to a certain smaller threshold value or engine operating condition is unfavorable for DPF updates, eventually
Only update.The deficiency of the patent and the reason is that：The patent only only accounts for starting in both cases the update of DPF, first, real
The soot loads on border are more than a maximum threshold value, and another is that actual soot loads reach a threshold value smaller than max-thresholds
When, and engine operating state be conducive to update when.During practical DPF works, more than above-mentioned the case where practical soot loads
Two kinds of situation complexity, such as practical soot loads are sufficiently large, if safety problem can be caused by forcing to update, for another example practical soot loads
In a reduced levels, while dpf temperature approaches the case where updating again, at this time if any measure is not taken, until reality
Soot loads reach newer threshold value, the rising of oil consumption and the aggravation of oil dilution can be caused.
Chinese patent application CN102213130A provides a kind of Regeneration control of the diesel engine exhaust filters of engineering machinery
Method.Technological means that the patent is taken and reaches effect and be：When carbon ash quantity is in tolerance interval, then regular intensity is executed again
It is raw；When amount of soot is higher than tolerance interval and when in common section, the first strength regeneration is executed；When amount of soot is higher than tolerance interval
When having reached dangerous section, the second strength regeneration more frequent than the first intensity is executed；When amount of soot is higher than dangerous section,
It then triggers and implements hand-operated forced regeneration.The deficiency of the patent and the reason is that：The patent is different strong according to how much execution of amount of soot
The regeneration of degree, there is no consider oil dilution and safety issue caused by more frequent regeneration.
Mainly there is also own shortcomings in the prior art：
1. influence of the different particle loaded rates to vehicle driving safety is not accounted for, especially under different particle loaded rates
It needs to take different treatment measures to ensure traffic safety on vehicle and internal combustion engine；
2. not accounting in the case where particle loaded rate is not very high, the micro- of filters trap is effectively removed by taking measures
Grain improves fuel economy and reduces oil dilution degree to reduce the frequency of initiative regeneration；
3. not accounting for particulate filter being arranged different operating modes, it is uniformly coordinated vehicle, internal combustion engine and filter dimension
Solicited message is repaiied, to ensure reliability service in work period particulate filter life-cycle.
Invention content
It is an object of the present invention to overcome the shortcomings of the prior art and provide a kind of controls of diesel particulate filter
The different operating mode of diesel particulate filter is arranged in system in the controls, under different working modes to vehicle,
Internal combustion engine and particulate filter take different treatment measures, to ensure that particulate filter safely, effectively is regenerated, and
Keep minimum fuel consumption and oil dilution rate.The technical solution adopted by the present invention is：
The different Working mould of diesel particulate filter is arranged in a kind of diesel particulate filter control system in the controls
Formula；
By monitor vehicle, internal combustion engine, particulate filter running parameter, including VMT Vehicle-Miles of Travel, I. C. engine exhaust temperature,
Particulate filter pressure difference, particle loaded rate judge the operating mode of particulate filter, including the regeneration of normal mode of operation, chance
Pattern, high-speed requests pattern, maintenance service request mode, limp-home mode and initiative regeneration pattern；
Different treatment measures are taken vehicle, internal combustion engine and particulate filter under different working modes, ensure particle mistake
Filter safely, effectively is regenerated.
Further,
Under chance regeneration mode, it is only necessary to which soot load can effectively be reduced by spraying fraction of oil mass, to reduce initiative regeneration
Number reduces oil consumption and oil dilution rate；Under chance regeneration mode, fuel injection amount is 15% of spray emitted dose after regular regeneration
~25%；
Under high-speed requests pattern, reminds driver to take by modes such as warning lamps and improve the operations such as speed, to effectively reduce
Particle loaded rate avoids plugged filter from being adversely affected caused by traffic safety and performance；
Under maintenance service request mode, by the modes such as warning lamp remind driver need to be purged particle into maintenance station it is negative
The operation of lotus, avoids plugged filter from impacting traffic safety and performance；
Under limp-home mode, torque output of combustion engine and rotating speed are limited, promotes driver to enter maintenance station and carries out clearly
Except the operation of particulate loading；
Under initiative regeneration pattern, promoted by being sprayed after increasing internal combustion engine or spraying the modes such as fuel into internal-combustion engine vent-pipe
Particulate filter temperature promotes particle and oxygen to carry out oxidation reaction, to remove the particle accumulated in filter.
It under normal mode of operation, does not need particulate filter and does any operation, be that particulate filter control system is started building
The operating mode entered after work or after completion particle regeneration.
Further,
Jump condition includes whether VMT Vehicle-Miles of Travel is more than respective threshold between particulate filter different working modes, in traveling
Journey threshold value includes high-speed requests threshold value, maintenance service request threshold value and limp-home threshold value, computational methods：From last time success
It completes internal-combustion engine rotational speed, fuel consumption rate and internal combustion engine time to be carried out respectively obtaining internal combustion engine after regeneration total
Number of moving part, fuel consumption total amount and internal combustion engine total working time, by the total number of moving part of internal combustion engine divided by total work
Internal combustion engine mean speed is obtained as the time, fuel of internal combustion engine total amount consumed divided by total working time are obtained into the average oil of internal combustion engine
Consumption, then by internal combustion engine mean speed and internal combustion engine be averaged oil mass inquiry three different MAP tables respectively obtain high-speed requests threshold
Value, maintenance service request threshold value and limp-home threshold value；High-speed requests threshold value, maintenance service request threshold value and limp-home threshold value
It is gradual stringent threshold value successively；
Jump condition further includes being determined by I. C. engine exhaust temperature and particle loaded rate between particulate filter different working modes
Regeneration number；It is integer to regenerate number, and range is 0 to 5：
When particle loaded rate is between threshold value SOOT_THD2 and SOOT_THD4, and I. C. engine exhaust temperature reaches threshold value TEMP_
THD1, regeneration number are 1；
When particle loaded rate threshold value is between SOOT_THD1 and SOOT_THD2, and I. C. engine exhaust temperature in TEMP_THD2 and
When between TEMP_THD3, regeneration number is 2；
When particle loaded rate is between threshold value SOOT_THD2 and SOOT_THD3, and I. C. engine exhaust temperature is less than TEMP_THD1
When, regeneration number is 3；
When particle loaded rate is between threshold value SOOT_THD4 and SOOT_THD5, regeneration number is 4；
When particle loaded rate is more than threshold value SOOT_THD5, regeneration number is 5；
It is 0 that remaining situation, which regenerates number,；
Particle loaded rate threshold value SOOT_THD1, SOOT_THD2, SOOT_THD3, SOOT_THD4, SOOT_THD5 and internal combustion engine row
Gas temperature threshold TEMP_THD1, TEMP_THD2, TEMP_THD3 are gradual stringent threshold values successively.
Further,
The computational methods of particle loaded rate are：Filter-carrier maximum capacity subtracts equivalent particle loaded of ash content and obtains filter
Carrier available capacity, it is particle loaded that equivalent particle loaded of ash content refers to that the carrier space shared by the ash content of accumulation can accommodate,
Particle loaded rate is obtained by particle loaded and filter carrier available capacity ratio again.
Further,
The condition for entering chance regeneration mode from normal mode of operation is that regeneration number is 2；Enter normal work from chance regeneration mode
The condition of operation mode is that regeneration number is 0；The condition for entering initiative regeneration pattern from chance regeneration mode is that regeneration number is 1.
The condition for entering initiative regeneration pattern from normal mode of operation is that regeneration number is 1；Enter just from initiative regeneration pattern
The condition of normal operating mode is that regeneration number is 0.
The condition for entering high-speed requests pattern from normal mode of operation is that regeneration number is 3 or mileage travelled reaches high speed
Ask threshold value；The condition for entering normal mode of operation from high-speed requests pattern is regeneration number 0；Enter repair from high-speed requests pattern
The condition of service request pattern be regeneration number be 4 either mileage travelled threshold value reach maintenance service and ask threshold value or particle mistake
Filter pressure difference reaches threshold limit value；The condition for entering initiative regeneration pattern from high-speed requests pattern is that regeneration number is 1.
The condition for entering maintenance call pattern from normal mode of operation is that regeneration number is that 4 or mileage travelled threshold value reach
Maintenance service asks threshold value or particulate filter pressure difference to reach threshold limit value；Enter from maintenance service request mode and walks lamely back
The condition of family's pattern is that regeneration number is 5, or mileage travelled reaches limp-home threshold value；Enter master from maintenance service request mode
The condition of dynamic regeneration mode is the rendering commands that particulate filter control system receives maintenance personal.
The condition for entering limp-home mode from normal mode of operation is that regeneration number is 5, or mileage travelled reaches limping
It goes home threshold value；The condition for entering initiative regeneration pattern from limp-home mode is that particulate filter control system receives repair people
The rendering commands of member.
Compared with the prior art, the advantages of the present invention are as follows：
1. the different working modes of particulate filter are arranged, under different working modes to vehicle, internal combustion engine and micro particle filtering
Device takes different treatment measures, to ensure the effective regeneration of traffic safety and particulate filter；
2. determining regeneration number by I. C. engine exhaust temperature and Filter Particulate load factor, not using regeneration number as particulate filter
With the essential condition shifted between operating mode；
3. being uniformly coordinated the running parameter of vehicle, internal combustion engine and particulate filter, the operating mode of particulate filter is judged, to
Ensure reliability service in work period particulate filter life-cycle；
4. in the case where particle loaded rate is not very high, the frequency of initiative regeneration during reducing filter work is regenerated by chance
Rate improves fuel economy and reduces oil dilution degree.
Description of the drawings
Fig. 1 is the particulate filter system configuration schematic diagram of the present invention.
Fig. 2 is the regeneration number schematic diagram of the present invention.
Fig. 3 is the Filter Particulate load factor schematic diagram of the present invention.
Fig. 4 is the particulate filter system state machine diagram of the present invention.
Fig. 5 is that the mileage travelled of the present invention calculates schematic diagram.
Fig. 6 is the maintenance signal transmission schematic diagram of the present invention.
Specific implementation mode
With reference to specific drawings and examples, the invention will be further described.
Fig. 1 is particulate filter system configuration schematic diagram.Internal combustion engine 1 during the work time, generally passes through EGR gas
Valve (EGR valve) 10 controls a part of exhaust gas and fresh air is mixed into cylinder of internal combustion engine, to reduce ignition temperature, reduces nitrogen
The generation of oxygen compound is equipped with cooler 9 before EGR valve 10, reduces exhaust gas temperature.Due to the introducing of exhaust gas, part is caused to be fired
Oil burn incompletely in cylinder generates the particle that pollution and injury are generated to environment and human body.On 1 discharge duct of internal combustion engine
Install particulate filter 3, effect be by micro particle catching in filter.It is particle loaded in particulate filter 3 when accumulating in
When reaching a certain amount of, by the delivery temperature before promotion particulate filter 3 to 620 DEG C or so so that be captured in particulate filter 3
Oxygen in interior particle and exhaust chemically reacts, to remove particle of the accumulation in particulate filter 3, such particle
Filter 3 restores the ability of particle in trapping exhaust again, which is known as the regeneration of particulate filter.When particulate filter 3
Need to regenerate, but the delivery temperature before filter do not reach regeneration need temperature (620 DEG C or so) when, need to pass through increase
It is sprayed after internal combustion engine 1 is remote, or is injected directly into the mode of fuel oil in the discharge duct before oxidation catalyzer 6 so that in exhaust
In oxidation catalyzer 6 exothermic oxidation reaction occurs under the effect of the catalyst for fuel oil, to promote the temperature before particulate filter 3
Degree reaches the temperature that regeneration needs.The operating temperature of oxidation catalyzer 6 is generally at 180 DEG C or more, when particulate filter 3 needs again
It is raw, and the delivery temperature before oxidation catalyzer 6 is less than 180 DEG C, then needs by adjusting throttle valve 13, variable-geometry section turbine
The measures such as distributive value promote the delivery temperature before oxidation catalyzer 6 after control valve 8 (VGT valves), internal combustion engine 1 are close.Particulate filter
Before the acquisition oxidation catalyzer 6 of control system 14 before temperature sensor 7, particulate filter 3 after temperature sensor 5, particulate filter 3
The signal of temperature sensor 2, differential pressure pickup 4 controls throttle valve 13, VGT valves 8, EGR valve 10 and internal combustion engine 1, protects
Card particulate filter safely, effectively regenerates.
Fig. 2 is regeneration number schematic diagram.The condition for triggering particulate filter regeneration includes temperature and particle before particulate filter
Two important parameters of load factor, the present invention regenerates the concept of number according to the two important parameter settings, by regenerating number table
Levy the particulate filter current state determined jointly by two parameters of temperature before particulate filter and particle loaded rate.Regenerating number is
Integer, range are 0 to 5：
When particle loaded rate is between threshold value SOOT_THD2 and SOOT_THD4, and I. C. engine exhaust temperature reaches threshold value TEMP_
THD1, regeneration number are 1；
When particle loaded rate threshold value is between SOOT_THD1 and SOOT_THD2, and I. C. engine exhaust temperature in TEMP_THD2 and
When between TEMP_THD3, regeneration number is 2；
When particle loaded rate is between threshold value SOOT_THD2 and SOOT_THD3, and I. C. engine exhaust temperature is less than TEMP_THD1
When, regeneration number is 3；
When particle loaded rate is between threshold value SOOT_THD4 and SOOT_THD5, regeneration number is 4；
When particle loaded rate is more than threshold value SOOT_THD5, regeneration number is 5；
It is 0 that remaining situation, which regenerates number,.
Particle loaded rate threshold value SOOT_THD1, SOOT_THD2, SOOT_THD3, SOOT_THD4, SOOT_THD5 and internal combustion
Machine delivery temperature threshold value TEMP_THD1, TEMP_THD2, TEMP_THD3 are gradual stringent threshold values successively.
Fig. 3 is Filter Particulate load factor schematic diagram.15 indicate the particle of filter traps, are remained after 16 expression particulate oxides
Under ash content.The computational methods of particle loaded rate are：Filter-carrier maximum capacity subtracts equivalent particle loaded of ash content and obtains
Filter-carrier available capacity, equivalent particle loaded of ash content refer to the particle that the carrier space shared by the ash content of accumulation can accommodate
Load, then particle loaded rate is obtained by particle loaded and filter-carrier available capacity ratio.
Fig. 4 is particulate filter system state machine diagram.The operating mode of particulate filter includes normal work
Pattern, chance regeneration mode, high-speed requests pattern, maintenance service request mode, limp-home mode and initiative regeneration pattern.
Under different working modes, different treatment measures are taken vehicle, internal combustion engine and filter, to ensure to go
The effective regeneration of vehicle safety and filter：
Under chance regeneration mode, it is only necessary to which soot load can effectively be reduced by spraying fraction of oil mass, to reduce initiative regeneration
Number reduces oil consumption and oil dilution rate；Under chance regeneration mode, fuel injection amount is 15% of spray emitted dose after regular regeneration
~25%；
Under high-speed requests pattern, reminds driver to take by modes such as warning lamps and improve the operations such as speed, to effectively reduce
Particle loaded rate avoids plugged filter from being adversely affected caused by traffic safety and performance；
Under maintenance service request mode, by the modes such as warning lamp remind driver need to be purged particle into maintenance station it is negative
The operation of lotus, avoids plugged filter from impacting traffic safety and performance；
Under limp-home mode, torque output of combustion engine and rotating speed are limited, promotes driver to enter maintenance station and carries out clearly
Except the operation of particulate loading；
Under initiative regeneration pattern, promoted by being sprayed after increasing internal combustion engine or spraying the modes such as fuel into internal-combustion engine vent-pipe
Particulate filter temperature promotes particle and oxygen to carry out oxidation reaction, to remove the particle accumulated in filter.
It under normal mode of operation, does not need particulate filter and does any operation, be that particulate filter control system is started building
The operating mode entered after work or after completion particle regeneration.
The condition for entering chance regeneration mode from normal mode of operation is that regeneration number is 2；Enter just from chance regeneration mode
The condition of normal operating mode is that regeneration number is 0；The condition for entering initiative regeneration pattern from chance regeneration mode is that regeneration number is 1.
The condition for entering initiative regeneration pattern from normal mode of operation is that regeneration number is 1；Enter just from initiative regeneration pattern
The condition of normal operating mode is that regeneration number is 0.
The condition for entering high-speed requests pattern from normal mode of operation is that regeneration number is 3 or mileage travelled reaches high speed
Ask threshold value；The condition for entering normal mode of operation from high-speed requests pattern is regeneration number 0；Enter repair from high-speed requests pattern
The condition of service request pattern be regeneration number be 4 either mileage travelled threshold value reach maintenance service and ask threshold value or particle mistake
Filter pressure difference reaches threshold limit value；The condition for entering initiative regeneration pattern from high-speed requests pattern is that regeneration number is 1.
The condition for entering maintenance call pattern from normal mode of operation is that regeneration number is that 4 or mileage travelled threshold value reach
Maintenance service asks threshold value or particulate filter pressure difference to reach threshold limit value；Enter from maintenance service request mode and walks lamely back
The condition of family's pattern is that regeneration number is 5, or mileage travelled reaches limp-home threshold value；Enter master from maintenance service request mode
The condition of dynamic regeneration mode is the rendering commands that particulate filter control system receives maintenance personal.
The condition for entering limp-home mode from normal mode of operation is that regeneration number is 5, or mileage travelled reaches limping
It goes home threshold value；The condition for entering initiative regeneration pattern from limp-home mode is that particulate filter control system receives repair people
The rendering commands of member.
Fig. 5 is that mileage travelled calculates schematic diagram.Speed 17 is added up to obtain the actual travel of vehicle in integrator 18
Mileage.Internal-combustion engine rotational speed 19 adds up in integrator 20 and obtains the total revolution of internal combustion engine, and the total revolution of internal combustion engine is in divider 24
Cumulative Elapsed Time 21 is neutralized to be divided by obtain the internal combustion engine mean speed from after last time successful regeneration.Fuel consumption rate 22 is in product
Divide to add up in device 23 and obtain fuel consumption total amount, fuel consumption total amount is in divider 25 and Cumulative Elapsed Time 21 is divided by obtain
From the internal combustion engine average fuel wear rate after last time successful regeneration.After particulate filter successfully completes regeneration, to integrator
18, it 20,23 resets, adds up again.It is looked into according to internal combustion engine mean speed and average fuel consumption rate in requestor 26
It askes three different MAP tables and respectively obtains high-speed requests threshold value, maintenance service request threshold value and limp-home threshold value.High-speed requests
Threshold value, maintenance service request threshold value and limp-home threshold value are gradual stringent threshold values successively.Pass through judgement in determining device 27
Whether vehicle actual travel mileage is more than high-speed requests threshold value, maintenance service request threshold value and limp-home threshold value, as particle
One of the condition of filter operating mode transfer, as shown in Figure 4.
Fig. 6 is maintenance signal transmission schematic diagram.When particulate filter is in maintenance service request operating mode or walks lamely back
Family's pattern, after vehicle reaches maintenance station, maintenance personal sends regeneration to particulate filter control system 14 by diagnostic equipment 28 and asks
29, regeneration termination signal 30, particulate filter is asked to replace signal 31, oxidation catalyzer replacement signal 32, particulate filter control
The signal that system 14 is sent according to maintenance personal judges whether to enter actively from maintenance service operating mode or limp-home mode
Reproduction operation pattern terminates initiative regeneration operating mode.
Claims (9)
1. a kind of diesel particulate filter control system, which is characterized in that diesel particulate filtration is arranged in the controls
The different operating mode of device；
By monitor vehicle, internal combustion engine, particulate filter running parameter, including VMT Vehicle-Miles of Travel, I. C. engine exhaust temperature,
Particulate filter pressure difference, particle loaded rate judge the operating mode of particulate filter, including the regeneration of normal mode of operation, chance
Pattern, high-speed requests pattern, maintenance service request mode, limp-home mode and initiative regeneration pattern；
Different treatment measures are taken vehicle, internal combustion engine and particulate filter under different working modes, ensure particle mistake
Filter safely, effectively is regenerated.
2. diesel particulate filter control system as described in claim 1, which is characterized in that
Under chance regeneration mode, fuel injection amount is 15%~25% of spray emitted dose after regular regeneration；
Under high-speed requests pattern, the operation taken and improve speed is reminded；
Under maintenance service request mode, reminds and enter the operation that maintenance station is purged particulate loading；
Under limp-home mode, torque output of combustion engine and rotating speed are limited；
It is micro- by being sprayed after increasing internal combustion engine or spraying fuel mode promotion into internal-combustion engine vent-pipe under initiative regeneration pattern
Grain filter temperature makes particle and oxygen carry out oxidation reaction；
Under normal mode of operation, does not need particulate filter and operated.
3. diesel particulate filter control system as described in claim 1, which is characterized in that
Jump condition includes whether VMT Vehicle-Miles of Travel is more than respective threshold between particulate filter different working modes, in traveling
Journey threshold value includes high-speed requests threshold value, maintenance service request threshold value and limp-home threshold value, computational methods：From last time success
It completes internal-combustion engine rotational speed, fuel consumption rate and internal combustion engine time to be carried out respectively obtaining internal combustion engine after regeneration total
Number of moving part, fuel consumption total amount and internal combustion engine total working time, by the total number of moving part of internal combustion engine divided by total work
Internal combustion engine mean speed is obtained as the time, fuel of internal combustion engine total amount consumed divided by total working time are obtained into the average oil of internal combustion engine
Consumption, then by internal combustion engine mean speed and internal combustion engine be averaged oil mass inquiry three different MAP tables respectively obtain high-speed requests threshold
Value, maintenance service request threshold value and limp-home threshold value；High-speed requests threshold value, maintenance service request threshold value and limp-home threshold value
It is gradual stringent threshold value successively；
Jump condition further includes being determined by I. C. engine exhaust temperature and particle loaded rate between particulate filter different working modes
Regeneration number；It is integer to regenerate number, and range is 0 to 5：
When particle loaded rate is between threshold value SOOT_THD2 and SOOT_THD4, and I. C. engine exhaust temperature reaches threshold value TEMP_
THD1, regeneration number are 1；
When particle loaded rate threshold value is between SOOT_THD1 and SOOT_THD2, and I. C. engine exhaust temperature in TEMP_THD2 and
When between TEMP_THD3, regeneration number is 2；
When particle loaded rate is between threshold value SOOT_THD2 and SOOT_THD3, and I. C. engine exhaust temperature is less than TEMP_THD1
When, regeneration number is 3；
When particle loaded rate is between threshold value SOOT_THD4 and SOOT_THD5, regeneration number is 4；
When particle loaded rate is more than threshold value SOOT_THD5, regeneration number is 5；
It is 0 that remaining situation, which regenerates number,；
Particle loaded rate threshold value SOOT_THD1, SOOT_THD2, SOOT_THD3, SOOT_THD4, SOOT_THD5 and internal combustion engine row
Gas temperature threshold TEMP_THD1, TEMP_THD2, TEMP_THD3 are gradual stringent threshold values successively.
4. diesel particulate filter control system as claimed in claim 3, which is characterized in that
The computational methods of particle loaded rate are：Filter-carrier maximum capacity subtracts equivalent particle loaded of ash content and obtains filter
Carrier available capacity, it is particle loaded that equivalent particle loaded of ash content refers to that the carrier space shared by the ash content of accumulation can accommodate,
Particle loaded rate is obtained by particle loaded and filter carrier available capacity ratio again.
5. diesel particulate filter control system as claimed in claim 3, which is characterized in that
The condition for entering chance regeneration mode from normal mode of operation is that regeneration number is 2；Enter normal work from chance regeneration mode
The condition of operation mode is that regeneration number is 0；The condition for entering initiative regeneration pattern from chance regeneration mode is that regeneration number is 1.
6. diesel particulate filter control system as claimed in claim 3, which is characterized in that
The condition for entering initiative regeneration pattern from normal mode of operation is that regeneration number is 1；Enter normal work from initiative regeneration pattern
The condition of operation mode is that regeneration number is 0.
7. diesel particulate filter control system as claimed in claim 3, which is characterized in that
The condition for entering high-speed requests pattern from normal mode of operation is that regeneration number is that 3 or mileage travelled reach high-speed requests
Threshold value；The condition for entering normal mode of operation from high-speed requests pattern is regeneration number 0；Enter maintenance service from high-speed requests pattern
The condition of request mode be regeneration number be 4 either mileage travelled threshold value reach maintenance service and ask threshold value or particulate filter
Pressure difference reaches threshold limit value；The condition for entering initiative regeneration pattern from high-speed requests pattern is that regeneration number is 1.
8. diesel particulate filter control system as claimed in claim 3, which is characterized in that
The condition for entering maintenance call pattern from normal mode of operation is that regeneration number is that 4 or mileage travelled threshold value reach repair
Service request threshold value or particulate filter pressure difference reach threshold limit value；Enter limp-home mould from maintenance service request mode
The condition of formula is that regeneration number is 5, or mileage travelled reaches limp-home threshold value；Enter actively again from maintenance service request mode
The condition of raw pattern is the rendering commands that particulate filter control system receives maintenance personal.
9. diesel particulate filter control system as claimed in claim 3, which is characterized in that
The condition for entering limp-home mode from normal mode of operation is that regeneration number is 5, or mileage travelled reaches limp-home
Threshold value；The condition for entering initiative regeneration pattern from limp-home mode is that particulate filter control system receives maintenance personal
Rendering commands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810082281.8A CN108412588B (en) | 2018-01-29 | 2018-01-29 | Particulate filter control system for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810082281.8A CN108412588B (en) | 2018-01-29 | 2018-01-29 | Particulate filter control system for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108412588A true CN108412588A (en) | 2018-08-17 |
| CN108412588B CN108412588B (en) | 2020-08-25 |
Family
ID=63126453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810082281.8A Active CN108412588B (en) | 2018-01-29 | 2018-01-29 | Particulate filter control system for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108412588B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110284950A (en) * | 2019-06-29 | 2019-09-27 | 潍柴动力股份有限公司 | A kind of control method of DPF, device and engine |
| CN111022202A (en) * | 2019-12-31 | 2020-04-17 | 潍柴动力股份有限公司 | Method and device for controlling front exhaust temperature of DPF of engineering machine |
| CN112127978A (en) * | 2020-08-19 | 2020-12-25 | 潍柴动力股份有限公司 | Method and system for regenerating particulate filter and engine |
| CN112282947A (en) * | 2019-07-23 | 2021-01-29 | 卡特彼勒公司 | Method and system for aftertreatment control |
| CN113914981A (en) * | 2021-09-29 | 2022-01-11 | 江西五十铃汽车有限公司 | DPF control system and control method thereof |
| CN115306523A (en) * | 2022-07-14 | 2022-11-08 | 潍柴动力股份有限公司 | Engine DPF control method and device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1517521A (en) * | 2003-01-08 | 2004-08-04 | 日产自动车株式会社 | Tail-gas purification system and method |
| CN101458108A (en) * | 2007-12-14 | 2009-06-17 | 现代自动车株式会社 | Method and apparatus for calculating effective volume of diesel particulate filter |
| US20120047876A1 (en) * | 2010-09-01 | 2012-03-01 | Hyundai Motor Company | Exhaust gas post processing method and system |
| CN102606257A (en) * | 2010-11-25 | 2012-07-25 | 现代自动车株式会社 | Exhaust gas filtering apparatus |
| CN102933802A (en) * | 2010-06-02 | 2013-02-13 | 洋马株式会社 | Exhaust gas purification system |
| JP2016200109A (en) * | 2015-04-14 | 2016-12-01 | いすゞ自動車株式会社 | Ash accumulation diagnosis system of fine particle collection device, internal combustion engine exhaust emission control system, ash accumulation diagnosing method of fine particle collection device and internal combustion engine exhaust emission control method |
-
2018
- 2018-01-29 CN CN201810082281.8A patent/CN108412588B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1517521A (en) * | 2003-01-08 | 2004-08-04 | 日产自动车株式会社 | Tail-gas purification system and method |
| CN101458108A (en) * | 2007-12-14 | 2009-06-17 | 现代自动车株式会社 | Method and apparatus for calculating effective volume of diesel particulate filter |
| CN102933802A (en) * | 2010-06-02 | 2013-02-13 | 洋马株式会社 | Exhaust gas purification system |
| US20120047876A1 (en) * | 2010-09-01 | 2012-03-01 | Hyundai Motor Company | Exhaust gas post processing method and system |
| CN102606257A (en) * | 2010-11-25 | 2012-07-25 | 现代自动车株式会社 | Exhaust gas filtering apparatus |
| JP2016200109A (en) * | 2015-04-14 | 2016-12-01 | いすゞ自動車株式会社 | Ash accumulation diagnosis system of fine particle collection device, internal combustion engine exhaust emission control system, ash accumulation diagnosing method of fine particle collection device and internal combustion engine exhaust emission control method |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110284950A (en) * | 2019-06-29 | 2019-09-27 | 潍柴动力股份有限公司 | A kind of control method of DPF, device and engine |
| CN112282947A (en) * | 2019-07-23 | 2021-01-29 | 卡特彼勒公司 | Method and system for aftertreatment control |
| GB2587878A (en) * | 2019-07-23 | 2021-04-14 | Caterpillar Inc | Method and system for aftertreatment control |
| US11118518B2 (en) | 2019-07-23 | 2021-09-14 | Caterpillar Inc. | Method and system for aftertreatment control |
| GB2587878B (en) * | 2019-07-23 | 2023-03-29 | Caterpillar Inc | Method and system for aftertreatment control |
| CN112282947B (en) * | 2019-07-23 | 2024-05-24 | 卡特彼勒公司 | Method and system for post-processing control |
| CN111022202A (en) * | 2019-12-31 | 2020-04-17 | 潍柴动力股份有限公司 | Method and device for controlling front exhaust temperature of DPF of engineering machine |
| CN111022202B (en) * | 2019-12-31 | 2022-07-15 | 潍柴动力股份有限公司 | Method and device for controlling front exhaust temperature of DPF of engineering machinery |
| CN112127978A (en) * | 2020-08-19 | 2020-12-25 | 潍柴动力股份有限公司 | Method and system for regenerating particulate filter and engine |
| CN113914981A (en) * | 2021-09-29 | 2022-01-11 | 江西五十铃汽车有限公司 | DPF control system and control method thereof |
| CN115306523A (en) * | 2022-07-14 | 2022-11-08 | 潍柴动力股份有限公司 | Engine DPF control method and device |
| CN115306523B (en) * | 2022-07-14 | 2024-05-17 | 潍柴动力股份有限公司 | Engine DPF control method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108412588B (en) | 2020-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108412588A (en) | Diesel particulate filter control system | |
| CN106640303B (en) | The generation control system of diesel engine particles supplementary set device | |
| CN206522173U (en) | A kind of diesel particulate trap active regeneration system forbid regeneration and forced regeneration control device | |
| CN100549373C (en) | The controlling method of waste gas cleaning system and waste gas cleaning system | |
| EP1722087B1 (en) | Exhaust gas purifying apparatus for internal combustion engine | |
| CN102947558B (en) | Waste gas cleaning system | |
| CN110435632B (en) | Fuel consumption control method for hybrid electric vehicle with emission consideration | |
| JP4922876B2 (en) | Exhaust gas purification system for internal combustion engine | |
| CN112324545B (en) | DPF regeneration coupling control method | |
| EP1519020A3 (en) | Regeneration control of diesel particular filter | |
| CN109252919A (en) | The method and system of particulate filter with bypass | |
| US11035279B2 (en) | Method, engine, and control system for controlling soot loading of exhaust gas aftertreatment components | |
| JP2013130191A (en) | System and method for regenerating particulate collecting filter of diesel engine | |
| EP2825754A1 (en) | Regeneration of diesel particle filter | |
| CN112943417B (en) | DPF regeneration control method, tail gas treatment system and vehicle | |
| CN112360601A (en) | Engine and PN emission control system and PN emission control method thereof | |
| CN114658520B (en) | Vehicle exhaust aftertreatment method, system, storage medium and electronic equipment | |
| CN111749770A (en) | DPF service regeneration control device and method | |
| CN113864027A (en) | DPF after-treatment system and driving regeneration control method thereof | |
| CN106640304A (en) | Regeneration method of particle collection system of diesel engine | |
| EP3093482B1 (en) | Exhaust gas purification system of internal combustion engine and exhaust gas purification method of internal combustion engine | |
| US20040011030A1 (en) | Operating method for an internal combustion engine which operates with an exhaust-gas aftertreatment system | |
| CN110435633B (en) | Fuel consumption control method for hybrid electric vehicle with emission consideration | |
| US20140290223A1 (en) | Exhaust gas purification device of internal combustion engine | |
| CN108457730A (en) | Particulate filter regeneration control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |