CN109944706A - The regulation method and device of oxynitride discharge - Google Patents
The regulation method and device of oxynitride discharge Download PDFInfo
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- CN109944706A CN109944706A CN201910252950.6A CN201910252950A CN109944706A CN 109944706 A CN109944706 A CN 109944706A CN 201910252950 A CN201910252950 A CN 201910252950A CN 109944706 A CN109944706 A CN 109944706A
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Abstract
The present invention provides a kind of regulation method of oxynitride discharge, obtain every operating parameter corresponding with engine, when every operating parameter is all satisfied preset detection service condition, the fuel delivery per cycle of the detected value of oxynitrides, the revolving speed of engine and engine under acquisition detecting state, and the fuel delivery per cycle according to the detected value of oxynitrides, the revolving speed of engine and engine, determine engine currently corresponding detecting state；Determine the detected value of oxynitrides and the deviation of preset oxynitrides model value；Deviation is compared with predetermined deviation threshold value, according to obtained result and the corresponding regulation measure of detecting state selection is compared, to control the discharge amount of oxynitrides.Using method provided by the invention, by regulating and controlling the parameter of engine, to control the oxynitrides of engine emission in reasonable range.
Description
Technical field
The present invention relates to control exhaust emissions technical fields, and in particular to a kind of regulation method of oxynitride discharge and
Device.
Background technique
With social progress and expanding economy, engine application is mainly applied in motor vehicle in multiple fields, is
Motor vehicle provides driving energy.Engine is mainly released energy by burning diesel oil, and engine discharges energy in burning diesel oil
When amount, the exhaust gas of discharge causes huge harm to environment and human body.The exhaust gas of engine emission mainly has nitric oxide
(NO), hydrocarbon (HC) and oxynitrides (NOx) etc. form, and chemistry can occur for oxynitrides and hydrocarbon instead
It answers, generates harmful substance, and oxynitrides enters after atmosphere will form acid rain, seriously endanger ecological environment.
Currently, the emission problem of countries in the world pay attention to day by day engine exhaust, for the exhaust gas of engine emission, Yi Zhongzhen
The method controlled engine emission exhaust gas is come into being, the discharge of pollutant in the exhaust gas to control engine emission
Amount.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of regulation method of oxynitride discharge, engine can be regulated and controled
The oxynitrides of discharge, so that the oxynitrides of discharge is in reasonably discharge range.
To achieve the above object, the embodiment of the present invention provides the following technical solutions:
A kind of regulation method of oxynitride discharge, comprising:
When meeting default enabled condition, within the current detection period, obtains in engine operation process, start with described
The corresponding every operating parameter of machine, and judge whether every operating parameter meets preset detection service condition；
When every operating parameter is all satisfied the preset detection service condition, obtain under the detecting state
The detected value of oxynitrides, the revolving speed of the engine and the engine fuel delivery per cycle；
According to the fuel delivery per cycle of the detected value of the oxynitrides, the revolving speed of the engine and the engine,
Determine the engine currently corresponding detecting state；
Determine the detected value of the oxynitrides and the deviation of preset oxynitrides model value；
The deviation is compared with predetermined deviation threshold value, obtains comparison result；
Corresponding regulation measure is selected according to the comparison result and the detecting state, to control oxynitrides
Discharge amount.
Above-mentioned method, optionally, the preset detection service condition include multiple sub- conditions of operation, the judgement institute
State whether every operating parameter meets preset detection service condition, comprising:
Determine the corresponding sub- condition of operation of every operating parameter；
Judge whether each described operating parameter meets the sub- condition of corresponding operation；
When each operating parameter is all satisfied the sub- condition of corresponding operation, determine that every operating parameter is full
The foot preset detection service condition.
Above-mentioned method, it is optionally, described according to the detected value of the oxynitrides, the revolving speed of the engine and institute
The fuel delivery per cycle for stating engine determines the engine currently corresponding detecting state, comprising:
Judge the revolving speed of the engine whether in preset rotation speed threshold interval and the fuel delivery per cycle of the engine
Whether in preset loop fuel delivery threshold interval and whether the detected value of the oxynitrides of the engine is in default nitrogen
In oxygen compound threshold interval；
When the revolving speed of the engine is in the preset rotation speed threshold interval, and the fuel delivery per cycle of the engine exists
In the preset loop fuel delivery threshold interval, and the detected value of the oxynitrides of the engine is in default oxynitrides
When in threshold interval, determine that currently corresponding detecting state is stable state to the engine, otherwise, it is determined that the engine is currently right
The detecting state answered is transient state.
Above-mentioned method, optionally, when currently corresponding detecting state is stable state to the engine, described in the foundation
Comparison result and the detecting state select corresponding regulation measure, to control the discharge amount of oxynitrides, comprising:
According to the comparison result, judge within the current detection period, the inspection of the oxynitrides of the engine output
Whether measured value meets preset outputting standard value；
When the detected value of the oxynitrides is greater than the preset outputting standard value, preset stable state is called
Correction strategy is controlled, default regulation parameter corresponding with the engine is adjusted, to control the engine to oxynitrides
Discharge amount.
Above-mentioned method, optionally, when currently corresponding detecting state is transient state to the engine, described in the foundation
Comparison result and the detecting state select corresponding regulation measure, to control the discharge amount of oxynitrides, comprising:
According to the comparison result, judge within the current detection period, the inspection of the oxynitrides of the engine output
Whether measured value meets preset outputting standard value；
When the detected value of the oxynitrides is greater than the preset outputting standard value, preset transient state is called
Correction strategy is controlled, default regulation parameter corresponding with the engine is adjusted, to control the engine to oxynitrides
Discharge amount.
A kind of regulation device of oxynitride discharge, comprising:
Judging unit, within the current detection period, obtaining engine operation process when meeting default enabled condition
In, items operating parameter corresponding with the engine, and judge whether every operating parameter meets preset detection fortune
Row condition；
Acquiring unit, for obtaining when every operating parameter is all satisfied the preset detection service condition
The fuel delivery per cycle of the detected value of oxynitrides under the detecting state, the revolving speed of the engine and the engine；
First determination unit, revolving speed and the hair for detected value, the engine according to the oxynitrides
The fuel delivery per cycle of motivation determines the engine currently corresponding detecting state；
Second determination unit, for determining the detected value and preset oxynitrides model value of the oxynitrides
Deviation；
Comparing unit obtains comparison result for the deviation to be compared with predetermined deviation threshold value；
Regulate and control unit, for selecting corresponding regulation measure according to the comparison result and the detecting state, with control
The discharge amount of oxynitrides processed.
Above-mentioned device, optionally, the judging unit, comprising:
Subelement is determined, for determining the corresponding sub- condition of operation of every operating parameter；
First judgment sub-unit, for judging whether each described operating parameter meets the sub- condition of corresponding operation,
When each operating parameter is all satisfied the sub- condition of corresponding operation, it is described pre- to determine that every operating parameter meets
If detection service condition.
Above-mentioned device, optionally, first determination unit, comprising:
Second judgment sub-unit, for judging the revolving speed of the engine whether in preset rotation speed threshold interval and institute
The fuel delivery per cycle of engine is stated whether in preset loop fuel delivery threshold interval and the oxynitrides of the engine
Detected value whether in default oxynitrides threshold interval；
Determine subelement, for the revolving speed when the engine in the preset rotation speed threshold interval, and described starts
The fuel delivery per cycle of machine is in the preset loop fuel delivery threshold interval, and the detected value of the oxynitrides of the engine
When in default oxynitrides threshold interval, determine that currently corresponding detecting state is stable state to the engine, otherwise, it is determined that
Currently corresponding detecting state is transient state to the engine.
Above-mentioned device, optionally, the regulation unit, comprising:
First choice subelement, for judging within the current detection period, the engine is defeated according to the comparison result
Whether the detected value of oxynitrides out meets preset outputting standard value；When the detected value of the oxynitrides is greater than institute
When stating preset outputting standard value, preset stable state control correction strategy is called, is adjusted corresponding with the engine pre-
If regulating and controlling parameter, to control the engine to the discharge amount of oxynitrides.
Above-mentioned device, optionally, the regulation unit, comprising:
Second selection subelement, for judging within the current detection period, the engine is defeated according to the comparison result
Whether the detected value of oxynitrides out meets preset outputting standard value；When the detected value of the oxynitrides is greater than institute
When stating preset outputting standard value, preset transient control correction strategy is called, is adjusted corresponding with the engine pre-
If regulating and controlling parameter, to control the engine to the discharge amount of oxynitrides.
The method provided based on the embodiments of the present invention is had the advantage that
Method provided in an embodiment of the present invention obtains every operating parameter corresponding with engine, when every operating parameter
When being all satisfied preset detection service condition, the detected value of the oxynitrides under detecting state, turn of the engine are obtained
The fuel delivery per cycle of the fast and described engine, and according to the detected value of the oxynitrides, the revolving speed of engine and the hair
The fuel delivery per cycle of motivation determines engine currently corresponding detecting state；Determine the detected value of oxynitrides with it is preset
The deviation of oxynitrides model value；Deviation is compared with predetermined deviation threshold value, according to compare obtained result with
And detecting state selects corresponding regulation measure, to control the discharge amount of oxynitrides.Using method provided by the invention, lead to
The parameter for crossing regulation engine, controls the oxynitrides of engine emission in reasonable range, realizes closed loop regulation nitrogen
The pressure of the conversion oxynitrides of post-processing is effectively reduced in the discharge of oxygen compound.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of method flow diagram of the regulation method of oxynitride discharge provided in an embodiment of the present invention；
Fig. 2 is a kind of another method flow chart of the regulation method of oxynitride discharge provided in an embodiment of the present invention；
Fig. 3 is a kind of another method flow chart of the regulation method of oxynitride discharge provided in an embodiment of the present invention；
Fig. 4 is a kind of another method flow chart of the regulation method of oxynitride discharge provided in an embodiment of the present invention；
Fig. 5 is a kind of another method flow chart of the regulation method of oxynitride discharge provided in an embodiment of the present invention；
Fig. 6 is a kind of structure drawing of device of the regulation device of oxynitride discharge provided in an embodiment of the present invention；
Fig. 7 is a kind of structure drawing of device of the regulation device of oxynitride discharge provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In this application, the terms "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion,
So that the process, method, article or equipment for including a series of elements not only includes those elements, but also including not having
The other element being expressly recited, or further include for elements inherent to such a process, method, article, or device.Do not having
There is the element limited in the case where more limiting by sentence "including a ...", it is not excluded that in the mistake including the element
There is also other identical elements in journey, method, article or equipment.
Present invention could apply in numerous general or special purpose exhaust gas discharging control systems, such as can be using about vapour
The discharge of certain element needs discharge system in the reasonable scope in tail gas emission control systems, or the various control exhaust gas of needs
System.
The embodiment of the invention provides a kind of regulation method of oxynitride discharge, this method be can be applied to nitrogen
In the engine models of oxygen compound sensor, executing subject is controller or engine control in engine control system
Processor in system, controller or processor can be set together with engine, and the method flow diagram of the method is such as
Shown in Fig. 1, specifically include:
S101, when meeting default enabled condition, within the current detection period, obtain in engine operation process, with institute
The corresponding every operating parameter of engine is stated, and judges whether every operating parameter meets preset detection service condition.
It is pre- in engine control system when meeting in engine control system in method provided in an embodiment of the present invention
If when enabled condition, then the present invention can be performed and implement the method provided, this is before executing method provided in an embodiment of the present invention
It mentions, the enabled condition can be a level signal, such as when becoming high level from low level, then meet default enabled item
Part；Within the current detection period, engine corresponding every operating parameter in the process of running is obtained；It needs to illustrate
It is that detection cycle can be set according to the actual situation, the period can be set as unit of hour, minute etc., such as be arranged
One detection cycle is 15 minutes, then the time detected continues 15 minutes, and the interval between detection cycle can be by
It is configured according to actual conditions, such as the interval duration between detection cycle 1 and detection cycle 2 can be 5 hours；With hair
The corresponding every operating parameter of motivation may include the indices parameter of engine at runtime, such as the water temperature of engine,
The pressure at expulsion etc. of engine also includes external some parameters, such as temperature, the humidity of environment of environment locating for engine
Deng；Judge whether the every operating parameter obtained meets corresponding default detection service condition.
S102, when every operating parameter is all satisfied the preset detection service condition, acquisition is in the detection
The fuel delivery per cycle of the detected value of oxynitrides under state, the revolving speed of the engine and the engine.
In method provided in an embodiment of the present invention, when every operating parameter is all satisfied the preset detection service condition
When, the detected value of revolving speed of the engine within the current detection period, fuel delivery per cycle and oxynitrides is obtained, acquisition is started
The revolving speed of machine and the fuel delivery per cycle of engine can be detected by engine detection equipment preset in engine and be obtained,
It can be obtained by pre-set corresponding sensor；The detected value of the oxynitrides is by being set in advance in engine
Nitrogen oxide sensor at emission detects to obtain, it should be noted that every operating parameter of engine can lead to
It crosses corresponding sensor to obtain, or detects to obtain by pre-set detection module.
S103, the circulation confession according to the detected value of the oxynitrides, the revolving speed of the engine and the engine
Oil mass determines the engine currently corresponding detecting state.
In method provided in an embodiment of the present invention, pass through detected value according to the oxynitrides, the engine
The fuel delivery per cycle of revolving speed and engine, to determine that the engine currently corresponding detecting state, the detecting state are divided into
Stable state and transient state, it should be noted that the process for determining detecting state is by the detected value of the oxynitrides, engine
Revolving speed and the fuel delivery per cycle of engine corresponding preset threshold section is compared respectively, to judge that engine is worked as
Preceding corresponding detecting state.
The deviation of S104, the detected value for determining the oxynitrides and preset oxynitrides model value.
In method provided in an embodiment of the present invention, examined within the current detection period by preset nitrogen oxide sensor
The detected value of actual oxynitrides is measured, and preset in preset simulation nitrogen oxide sensor by obtaining
Oxynitrides model value, by the oxynitrides detected value and the oxynitrides model value, according to pre-set
Algorithm is calculated, to determine the deviation between oxynitrides detected value and oxynitrides model value；Such as it calculates
It can be ± 3 to the deviation of oxynitrides and oxynitrides.
S105, the deviation is compared with predetermined deviation threshold value, obtains comparison result.
In providing method of the embodiment of the present invention, the deviation being calculated in step S104 and predetermined deviation threshold value are carried out
It compares, whether in the reasonable scope to judge the oxynitrides discharged, the predetermined deviation threshold value can be interval threshold,
It can be specific numerical value；When the predetermined deviation threshold value is interval threshold, then when the deviation is not in predetermined deviation threshold
When being worth in range, then the result compared is that actual oxynitride discharge is unreasonable, when the deviation is default inclined
When in poor threshold range, then the result compared is that actual oxynitride discharge is reasonable, such as predetermined deviation threshold value is
± 3, the deviation threshold being calculated is ± 4, then the oxynitrides of actual discharge is unreasonable；When the predetermined deviation threshold value is
When specific numerical value, then when the deviation is greater than predetermined deviation threshold value, then the result compared is the nitrogen of actual discharge
Oxygen compound is unreasonable, and when the deviation is less than predetermined deviation threshold value, then the result compared is the nitrogen of actual discharge
Oxygen compound is reasonable, such as predetermined deviation threshold value is 5%, and the deviation threshold being calculated is 3%, then the nitrogen oxidation of actual discharge
It is reasonable to close object；It should be noted that the value type of the value type of the predetermined deviation threshold value and the deviation being calculated
Unanimously, when calculating the deviation of oxynitrides detected value and oxynitrides model value, different value types are corresponding different
Calculation method.
S106, corresponding regulation measure is selected according to the comparison result and the detecting state, to control nitrogen oxidation
Close the discharge amount of object.
In method provided in an embodiment of the present invention, the engine according to obtained in S103 currently corresponding detecting state and
Comparison result in S105, currently corresponding state of a control according to the state of a control selects corresponding regulation to output engine
Measure, to control the discharge amount of oxynitrides；It should be noted that currently corresponding state of a control can be divided into engine
In the reasonable scope, stable state control is unreasonable, and transient control is unreasonable, these three states for current control；Current control is reasonable
It is reasonable this case of oxynitrides that comparison result is actual discharge in range；Stable state control is unreasonable, is engine
Current corresponding detecting state is stable state, and is compared obtaining the result is that the unreasonable situation of the oxynitrides of actual discharge；
Transient control is unreasonable, is that currently corresponding detecting state is transient state to engine, and is compared obtaining the result is that actual discharge
The unreasonable situation of oxynitrides；Corresponding regulation measure is selected by different state of a controls, and then controls engine
The discharge of oxynitrides, so that the oxynitrides of engine emission is in the reasonable scope.
In method provided in an embodiment of the present invention, when meeting default enabled condition, within the current detection period, hair is obtained
Items operating parameter corresponding with engine in motivation operational process, judges whether every operating parameter meets preset inspection
It surveys service condition and obtains the nitrogen oxygen under the detecting state when the parameters are all satisfied preset detection service condition
The fuel delivery per cycle of the detected value of compound, the revolving speed of the engine and the engine, and according to the oxynitrides
Detected value, the revolving speed of the engine and the fuel delivery per cycle of the engine, determine the engine currently corresponding inspection
The deviation of the detected value of survey state and the oxynitrides and preset oxynitrides model value；By the deviation
It is compared with predetermined deviation threshold value, obtains comparison result；It is corresponded to according to the comparison result and detecting state selection
Regulation measure, to control the discharge amount of oxynitrides.
By applying method provided in an embodiment of the present invention, when the parameters of engine meet corresponding default item
When part, it is determined that the deviation of the engine currently detected value and model value of corresponding detecting state and oxynitrides, and
Deviation is compared with predetermined deviation threshold value, obtains comparison result, and currently corresponding with engine according to comparison result
Detecting state selects corresponding regulation measure, and the oxynitrides to regulate and control engine emission passes through application in the reasonable scope
Method provided by the invention is controlled from the former discharge of oxynitrides, effectively reduces the former discharge of oxynitrides, from
And reduce the pressure that post-processing converts oxynitrides；The former discharge is the nitrogen oxidation emitted from engine
Close object, it is described post-processing be engine emission oxynitrides at offgas duct by the processing of reducing agent, nitrogen oxidation is closed
The treatment process that object is converted；Using method provided in an embodiment of the present invention, the nitrogen oxidation that can control engine emission is closed
Object in the reasonable scope, reduces the transfer pressure of post-processing, and by the parameter of regulation engine, realizes closed loop regulation
The discharge of oxynitrides.
In method provided in an embodiment of the present invention, when the application present invention implements the method provided, need to judge engine
Every operating parameter whether meet preset detection service condition, the specific process of judgement is as described below:
Determine the corresponding sub- condition of operation of every operating parameter；
The present invention is implemented in the method provided, after obtaining every operating parameter, determines that items service condition is respectively right
The sub- condition of the operation answered, the sub- condition of operation is to judge whether the operating parameter meets the standard of condition.
Judge whether each described operating parameter meets the sub- condition of corresponding operation；
In method provided in an embodiment of the present invention, by the way that every operating parameter is distinguished the sub- item of corresponding operation
Part is compared or matches, to judge whether the operating parameter meets condition.
When each operating parameter is all satisfied the sub- condition of corresponding operation, determine that every operating parameter is full
The foot preset detection service condition；
In method provided in an embodiment of the present invention, when every operating parameter respectively meets the sub- condition of corresponding operation,
Then determine that every operating parameter meets the preset detection service condition, then can determine whether engine currently corresponding detection
The deviation of the detected value and model value of state and oxynitrides, and according to engine currently corresponding detecting state with
And the comparison result of the deviation and predetermined deviation threshold value, select corresponding regulation measure.
By the judgement of the detection service condition to every operating parameter, effective detection range of operation is provided, it is ensured that
The deviation of the detected value and model value of the corresponding detecting state of subsequent judgement engine and oxynitrides it is accurate
Property.
The deterministic process of its specific every operating parameter can refer to Fig. 2, and specific description is as described below:
S201, acquisition every operation detection parameters corresponding with the engine of operation.
In method provided in an embodiment of the present invention, controller by each sensor or preset detection module obtain with
The corresponding every operating parameter of the engine of operation, the items operating parameter includes external environment condition parameter, such as operating parameter a
For environment temperature；Further include the operating parameter of engine itself, for example operating parameter b is engine water temperature, operating parameter c be into
Gas collector temperature, operating parameter d are engine operation mode etc., it should be noted that the engine operation mode can be
Various modes, or the mode of single mode, selection can be selected by preset selecting party French.
S202, determine whether each operating parameter meets the subconditional judging result of corresponding operation.
In method provided in an embodiment of the present invention, when operating parameter meets the sub- condition of corresponding operation, operating parameter
Corresponding place value is 1；When operating parameter does not meet the sub- condition of corresponding operation, the corresponding place value of operating parameter is
0；It should be noted that the corresponding place value of the operating parameter is whether the characterization operating parameter meets corresponding operation
Subconditional situation；Such as the corresponding sub- condition of operation of environment temperature is 25 DEG C~40 DEG C of environment temperature threshold value of calibration, environment
Temperature is 30 DEG C, then meets the sub- condition of operation, then the corresponding place value of environment temperature is 1；Engine water temperature is 58 DEG C, with engine
The corresponding sub- condition of operation of water temperature is 35 DEG C~55 DEG C, then engine water temperature does not meet the sub- condition of operation, then engine water temperature pair
The place value answered is 0；Every operating parameter is judged one by one it should be noted that can be when judging, it can also be with
It is to judge simultaneously every operating parameter.
S203, judge whether whole operating parameters is all satisfied the sub- condition of operation corresponding thereto.
In method provided in an embodiment of the present invention, controller judges operation ginseng according to the corresponding place value of every operating parameter
Whether number meets the corresponding sub- condition of operation, when the corresponding place value of every operating parameter is 1, then judges whole every fortune
Row parameter all meets the corresponding sub- condition of operation, then exports the numerical value 1 of characterization judging result；In every operating parameter, wherein
When thering is an operating parameter to be unsatisfactory for the sub- condition of corresponding operation, then judge that every operating parameter not all meets corresponding operation
Condition, the numerical value 0 of output characterization judging result；For example, 5 operating parameters are shared, the corresponding place value of the operating parameter received
Are as follows: 11111, then show there are current 5 operating parameters to meet its corresponding sub- condition of operation, judges all operating parameter symbols
The corresponding sub- condition of operation is closed, then the numerical value for exporting characterization judging result is 1；When receiving the corresponding place value of operating parameter are as follows:
When 10111, then judge that operating parameter does not meet the corresponding sub- condition of operation all, the numerical value of output characterization judging result is 0.
S204, the working condition for determining nitrogen oxide sensor.
The embodiment of the present invention provide in method in, when nitrogen oxide sensor working condition be effective status, when
When working condition is effective status, the effective numerical value 1 of characterization state is inputted to controller；When working condition is invalid state,
The numerical value 0 invalid to controller input characterization state.
S205, the fuel delivery per cycle and oxynitrides detected value for obtaining the revolving speed of engine, engine, to determine hair
The current corresponding detecting state of motivation.
In method provided in an embodiment of the present invention, the revolving speed of engine, the fuel delivery per cycle of engine and nitrogen oxygen are obtained
Compound test value, with determine engine currently corresponding detecting state when, need to judge the corresponding detection shape of present engine
State judges that the corresponding detecting state of engine is described in detail below:
Judge the revolving speed of the engine whether in preset rotation speed threshold interval and the fuel delivery per cycle of the engine
Whether in preset loop fuel delivery threshold interval and whether the detected value of oxynitrides is in default oxynitrides threshold value
In section；
It, can be according to the engine obtained at each moment in current detection period in method provided in an embodiment of the present invention
Revolving speed generates speed waveform figure, to judge the fluctuation range of revolving speed all detection moments within the current detection period of engine
Whether in preset rotation speed threshold interval, when the revolving speed of detection moments all in detection cycle is all in preset rotation speed threshold interval
It is interior, then determine the revolving speed of current detection period intrinsic motivation in preset rotation speed threshold interval, such as preset rotation speed threshold interval
For 2000r/min~3000r/min, the revolving speed of 1 engine is 3100r/min at the time of detection cycle, then determines current inspection
The revolving speed of period intrinsic motivation is surveyed not in preset rotation speed threshold interval；It optionally, can also be by engine in detection cycle
Detected revolving speed is calculated according to preset calculation method, obtains stability bandwidth or wave of the engine in detection cycle
The stability bandwidth or fluctuation gradient are compared dynamic gradient with preset rotation speed threshold interval, judge the stability bandwidth or
Gradient is fluctuated whether in preset rotation speed threshold interval, such as the stability bandwidth being calculated is 5.4%, preset rotation speed threshold interval
It is 3%~7%, then the revolving speed of engine is in preset rotation speed threshold interval；
It should be noted that the fuel delivery per cycle according to the engine obtained at each moment in current detection period, generates
Fuel delivery per cycle waveform diagram, to judge the fluctuation model of fuel delivery per cycle all detection moments within the current detection period of engine
It encloses whether in preset rotation speed threshold interval, when the fuel delivery per cycle of detection moments all in detection cycle is all in preset rotation speed threshold
Be worth in section, then determine the fuel delivery per cycle of current detection period intrinsic motivation in preset rotation speed threshold interval, such as it is default
Fuel delivery per cycle threshold interval is 30mm3/ st~50mm3/ st, the fuel delivery per cycle of 2 engines is at the time of detection cycle
60mm3/ st then determines the fuel delivery per cycle of current detection period intrinsic motivation not in preset rotation speed threshold interval；Optionally,
Engine fuel delivery per cycle detected in detection cycle can also be calculated according to preset calculation method, be obtained
Stability bandwidth a or fluctuation gradient b of the engine in detection cycle, by the stability bandwidth a or fluctuation gradient b and preset loop
Whether fuel delivery threshold interval is compared, judge the stability bandwidth a or fluctuation gradient b in preset loop fuel delivery threshold zone
In, such as the stability bandwidth a being calculated is 7%, preset rotation speed threshold interval is 5%~8%, then the revolving speed of engine is pre-
If in rotary speed threshold value section；
It should be noted that generating nitrogen according to the oxynitrides detected value obtained at each moment in current detection period
Oxygen compound waveform diagram, to judge the fluctuation range of oxynitrides all detection moments within the current detection period whether pre-
If in oxynitrides threshold interval, when the fuel delivery per cycle of detection moments all in detection cycle is all in default oxynitrides
In threshold interval, then determine that oxynitrides is in preset rotation speed threshold interval in the current detection period；For judging nitrogen oxidation
Close object detected value whether the method in default oxynitrides threshold interval, with judge the engine revolving speed whether
Method in preset rotation speed threshold range is identical, is no longer repeated herein；It should be noted that the method for above-mentioned offer judgement
There are two types of only, it can also judge whether revolving speed, fuel delivery per cycle and oxynitrides are respectively corresponding to by other methods
Preset threshold section in.
When the revolving speed of the engine is in the preset rotation speed threshold interval, and the fuel delivery per cycle of the engine exists
In the preset loop fuel delivery threshold interval, and the detected value of the oxynitrides of the engine is in default oxynitrides
When in threshold interval, i.e., when the revolving speed of engine, and the fuel delivery per cycle of engine, and the detected value of oxynitrides, this three
When person's detection moment all within the current detection period is in corresponding preset threshold section, the engine is determined
Current corresponding detecting state is stable state, otherwise, it is determined that currently corresponding detecting state is transient state to the engine；
In method provided in an embodiment of the present invention, it is preferred that the corresponding detecting state of engine can be divided into stable state and wink
State both of these case, it should be noted that in a detection cycle, engine be possible to exist simultaneously stable state and transient state this two
The case where kind of state, it is assumed that current detection cycle T when it is 20 minutes a length of, be divided into 2 with 10 minutes by 20 minutes for a duration
A detection unit, respectively corresponds A, B；In detection unit A, when the revolving speed of the engine, the fuel delivery per cycle of engine
And the detected value of oxynitrides, each moment in detection unit A are in corresponding preset threshold section,
Then determine that the corresponding state of engine is stable state during detecting unit A；In detection cycle B when the revolving speed of the engine,
The fuel delivery per cycle of engine and the detected value of oxynitrides wherein have one not locate at each moment of detection unit B
In corresponding preset threshold section, for example in moment a, the fuel delivery per cycle of engine is not in preset fuel delivery per cycle
In threshold interval, and the revolving speed of engine and oxynitrides then determine in corresponding preset threshold section
The corresponding state of engine is transient state during detecting unit B；Then in current detection cycle T, the corresponding detecting state of engine is
Stable state and transient state are simultaneously deposited.
S206, judge whether to meet the condition for selecting corresponding regulation measure, if satisfied, then executing S207, otherwise, execute
S208。
In method provided in an embodiment of the present invention, controller passes through the state and operating parameter of nitrogen oxide sensor
It whether is all satisfied the judging result of corresponding service condition, judges whether to meet the condition for selecting corresponding regulation measure；When full
When foot selects the condition of corresponding regulation measure, step S207 is executed；When being unsatisfactory for selecting the condition of corresponding regulation measure, then tie
The process of beam regulation；It should be noted that being exported when the every operating parameter of judgement meets the sub- condition of corresponding operation
Characterize judging result numerical value be 1, and nitrogen oxide sensor state be it is effective when, i.e., characterization nitrogen oxide sensor shape
When state value is 1, meet the condition for selecting corresponding regulation measure；Otherwise, it is unsatisfactory for selecting the condition of corresponding regulation measure.
S207, the corresponding regulation measure of selection.
In method provided in an embodiment of the present invention, when every operating parameter meets the corresponding sub- condition of operation, and nitrogen oxidation
Close object sensor state it is effective when, need according to engine currently corresponding detecting state and oxynitrides detected value with
The deviation of oxynitrides model value, it is being compared with predetermined deviation threshold value as a result, select corresponding regulation measure, and hold
The corresponding regulation measure of row, when having executed corresponding regulation measure, then current regulation terminates.
S208, terminate process.
It should be noted that selecting the specific flow chart of corresponding regulation measure as shown in figure 3, the following institute of particular content
It states:
S301, oxynitrides detected value, oxynitrides model value and the corresponding detecting state of engine are obtained.
In method provided in an embodiment of the present invention, the model of the oxynitrides in oxynitrides virtual-sensor is obtained
Value, the corresponding detecting state of oxynitrides detected value and engine of nitrogen oxide sensor, the detecting state are
Stable state, or be transient state.
S302, foundation oxynitrides detected value and oxynitrides model value, calculate the deviation of oxynitrides, according to
According to the deviation and the detecting state and determine current state of a control.
In method provided in an embodiment of the present invention, by the oxynitrides detected value and oxynitrides model value according to
Preset a series of algorithm, is calculated, the deviation both obtained, and by the deviation and preset deviation threshold into
Row compares, and specific comparison process can refer to the particular content in above-mentioned S105, no longer be repeated herein；According to comparison result
Judge within the current detection period, whether the detected value of the oxynitrides of the engine output meets preset outputting standard
Value, when being unsatisfactory for preset outputting standard value, is then judged as that oxynitride discharge is unreasonable, marks when meeting preset output
When quasi- value, then it is judged as that oxynitride discharge is reasonable；It is rationally and practical that judgement can be divided into practical oxynitride discharge
The unreasonable both of these case of oxynitride discharge；According to comparison result and detecting state, state of a control may have these types
Situation: current control is reasonable；Stable state control is unreasonable；Transient control is unreasonable；It can it should be noted that being likely present one kind
Can, exactly when stable state and transient state exist simultaneously, in fact it could happen that stable state and the unreasonable situation of transient state, and when only stable state not
Rationally, it when transient state is reasonable, is then controlled for stable state unreasonable；When only transient state is unreasonable, when stable state is reasonable, then not for transient control
Rationally.
S303, corresponding correction strategy is determined according to the state of a control.
In method provided in an embodiment of the present invention, after determining engine corresponding state of a control, determine and control shape
The corresponding correction strategy of state；When state of a control is reasonable, corresponding correction strategy is to maintain former state of a control；When state of a control is
When stable state control is unreasonable, corresponding correction strategy is stable state control strategy；It is right when state of a control is that transient control is unreasonable
The correction strategy answered is transient control strategy；It should be noted that when there are stable state and all unreasonable transient state, corresponding amendment
Strategy is stable state and the equal control strategy of transient state.
S304, regulation measure corresponding with the correction strategy is chosen.
In method provided in an embodiment of the present invention, according to the correction strategy, corresponding regulation measure, the regulation are determined
Measure is to adjust default regulation parameter corresponding with the engine, and the default regulation parameter can be the oil spout of engine
Moment, adjustment exhaust gas recycling EGR (Exhaust Gas Recycle) aperture etc., by adjusting preset regulation parameter, thus
Control the discharge of oxynitrides, it should be noted that the corresponding regulation parameter of correction strategy not of the same race can be the same, can also be with
Different, the adjustment degree of correction strategy adjusting parameter not of the same race can determine according to the actual situation, can be arrived according to actually detected
Parameters calculated, so that the control value of corresponding every regulation parameter is obtained, to be modified to regulation parameter.
By that can control the oxynitrides of engine emission using method provided in an embodiment of the present invention,
The present invention also provides the flow charts of control oxynitride discharge, as shown in figure 4, particular content is as follows:
S401, parameters are obtained, to check the reasonability of engine emission oxynitrides, and determining and engine pair
The correction strategy answered.
It is whether reasonable in the oxynitrides for checking that engine discharges at runtime in method provided in an embodiment of the present invention
When, need to obtain a large amount of parameter, such as engine operating state, many kinds of parameters such as water temperature, the pressure of engine pass through these
Parameter carries out a series of logical derivation either calculating etc., judges whether the oxynitrides of engine emission is reasonable, thus
The determining current corresponding correction strategy with engine；When checking the reasonability of engine emission oxynitrides, need to judge
Whether every operating parameter when engine is run meets corresponding default detection service condition, when every operating parameter is complete
When portion meets, then the deviation of discharge oxynitrides is determined by the model value of the detected value of oxynitrides and oxynitrides
Value, deviation is compared with predetermined deviation threshold value, obtains comparison result, according to comparison result and the engine pair of acquisition
The detecting state answered determines corresponding correction strategy, determines the reasonable of engine emission oxynitrides according to the correction strategy
Property.
S402, corresponding regulation measure is selected according to correction strategy.
In method provided in an embodiment of the present invention, after determining the current correction strategy of engine, selection and the amendment
The corresponding regulation measure of strategy, different correction strategies corresponds to different regulation measures, to control the nitrogen oxidation of engine emission
Close object in the reasonable scope.
For the discharge of control oxynitrides, the embodiment of the invention also provides another specific flow charts, such as Fig. 5 institute
Show, be described as follows:
S501, every operating parameter is obtained.
In method provided in an embodiment of the present invention, every operating parameter corresponding with the engine of operation is obtained, it is described each
Item operating parameter can be engine operating state, engine water temperature, environment temperature, engine chamber pressure value, air inlet discrimination
Tube temperature degree etc., is not enumerated one by one herein.
S502, judge whether every operating parameter meets corresponding default detection service condition, if satisfied, then executing
S503；If not satisfied, then executing S507.
In method provided in an embodiment of the present invention, after obtaining every operating parameter, determination and every operating parameter phase
Corresponding default detection service condition, judges whether every operating parameter meets default detection service condition, such as air inlet
Collector temperature is 40 DEG C, and corresponding default detection service condition is 40 DEG C~51 DEG C, then intake manifold temperature meets default
Service condition；When every operating parameter is all satisfied corresponding detection service condition, S503 is executed；When there are operating parameters
When being unsatisfactory for being expected corresponding detection service condition, terminate regulation process.
S503, engine currently corresponding detecting state is determined.
In method provided in an embodiment of the present invention, preset operation item is respectively corresponded to determining that every operating parameter is all satisfied
When part, the parameter for determining engine detecting state is obtained, to determine engine currently corresponding detecting state；It needs to illustrate
It is in every operating parameter, when being unsatisfactory for corresponding preset service condition in the presence of every operating parameter, then to need really
Determine the current detecting state of engine；Determine that the detailed process of the current detecting state of engine can be found in S205 specifically
It is bright, it is no longer repeated herein；In method provided in an embodiment of the present invention, it is preferred that within the current detection period, engine
State be stable state, or be transient state.
S504, the deviation and predetermined deviation threshold value of the detected value of oxynitrides and oxynitrides model value are carried out
It compares, obtains comparison result.
In method provided in an embodiment of the present invention, when the deviation is compared with predetermined deviation threshold value, need really
Oxynitrides detected value and oxynitrides model value are determined, by the oxynitrides detected value and the oxynitrides mould
Offset is calculated according to pre-set algorithm, to determine between oxynitrides detected value and oxynitrides model value
Deviation；The deviation being calculated is compared with predetermined deviation threshold value, comparison result can be divided into deviation pre-
If in deviation threshold, then judging that the oxynitrides of discharge meets preset outputting standard value, i.e. discharge is reasonable；When deviation not
When in predetermined deviation threshold value；Then judge that the oxynitrides of discharge is unsatisfactory for preset outputting standard value, that is, discharges unreasonable.
S505, foundation detecting state and comparison result, determine correction strategy corresponding with engine.
In method provided in an embodiment of the present invention, the current corresponding testing result of the engine, the testing result can
It to be divided into transient state, or is stable state；The comparison result of deviation and predetermined deviation threshold value can be divided into, the nitrogen oxygen of engine emission
Compound, which is divided into, discharges rationally and discharges unreasonable both of these case；Then according to testing result and comparing result, it can obtain
It is reasonable to the state of a control of following several engines: current control；Stable state control is unreasonable；Transient control is unreasonable；According to control
State processed, determines corresponding correction strategy, and specific determination process can refer to S303, no longer be repeated herein.
S506, foundation correction strategy, execute corresponding regulation measure.
In method provided in an embodiment of the present invention, after determining corresponding correction strategy, so that it is determined that with correction strategy pair
The regulation measure answered regulates and controls corresponding regulation parameter according to regulation measure, and specific process can refer to S304, no longer carry out herein
It repeats.
S507, terminate regulation process.
In method provided in an embodiment of the present invention, by applying method provided by the invention, when the parameters of engine
When meeting corresponding preset condition, it is determined that the current detected value of corresponding detecting state and oxynitrides of engine
With the deviation of model value, and deviation is compared with predetermined deviation threshold value, obtains comparison result, and according to comparison result
Currently corresponding detecting state selects corresponding regulation measure with engine, is being closed with regulating and controlling the oxynitrides of engine emission
It manages in range.
In method provided in an embodiment of the present invention, said referring to the processing unit figure of engine emission oxynitrides
Bright, specific exemplary diagram is as shown in Figure 6, it should be noted that executing subject of the invention can be automobile processor or
Controller, the controller or processor being also possible in control system regulate and control each of engine by the transmission of signal
A parameter；Its controller can also be set together with engine, to regulate and control the parameters of engine；It can be in engine
Detection module, which is arranged, directly can also be sent to controller, NOx for parameters by engine for detecting parameters
Sensor is nitrogen oxide sensor, for detecting the oxynitrides of engine emission, provides actual nitrogen for controller
The detected value of oxygen compound, virtual NOx sensor are virtual nitrogen oxide sensor for providing preset nitrogen to controller
Oxygen compound model value；Processing unit figure is divided into former row's processing stage and heel row processing stage, and original row's processing stage is to be directed to
Processing when engine emission oxynitrides, heel row processing stage are that oxynitride discharge later urge using corresponding by same cross
Agent carries out redox to oxynitrides, and the post-processing stages in Fig. 6 are provided with diesel oxidation catalyst (Diesel
OxidationCatalyst) DOC, diesel particulate filter (Diesel Particulate Filter) DPF, is selectively urged
Change reduction technique (Selective Catalytic Reduction) SCR/ Driving Antiskid Control System (Anti-slip
Contro) ASC, the equipment being arranged by post-processing stages, the nitrogen oxidation that engine emission can be restored using reducing agent are closed
Object controls the discharge of oxynitrides in the reasonable scope with this；By applying method provided in an embodiment of the present invention, can control
The discharge amount of engine emission oxynitrides reduces heel row processing to oxynitrides in the processing capacity that heel row is handled
The pressure of processing, in the reasonable scope with the oxynitrides that ensures finally to discharge；It is provided in an embodiment of the present invention by application
Method, the oxynitrides that can control engine emission in the reasonable scope, reduces the transfer pressure of post-processing, and leads to
The parameter for crossing regulation engine realizes the discharge of closed loop regulation oxynitrides.
Corresponding with method described in Fig. 1, the embodiment of the invention also provides a kind of regulation of oxynitride discharge dresses
It sets, specific structure drawing of device particular content as shown in Figure 7 is as described below:
Judging unit 701, within the current detection period, obtaining engine operation when meeting default enabled condition
In the process, every operating parameter corresponding with the engine, and judge whether every operating parameter meets preset inspection
Survey service condition；
Acquiring unit 702, for obtaining when every operating parameter is all satisfied the preset detection service condition
The circulation fuel feeding of the detected value of oxynitrides under the detecting state, the revolving speed of the engine and the engine
Amount；
First determination unit 703, for the revolving speed of detected value, the engine according to the oxynitrides and described
The fuel delivery per cycle of engine determines the engine currently corresponding detecting state；
Second determination unit 704, for determining the detected value and preset oxynitrides model of the oxynitrides
The deviation of value；
Comparing unit 705 obtains comparison result for the deviation to be compared with predetermined deviation threshold value；
Regulate and control unit 706, for selecting corresponding regulation measure according to the comparison result and the detecting state, with
Control the discharge amount of oxynitrides.
The present invention provides a kind of regulation device of oxynitride discharge, obtains every operation ginseng corresponding with engine
Number obtains the detection of the oxynitrides under detecting state when every operating parameter is all satisfied preset detection service condition
The fuel delivery per cycle of value, the revolving speed of engine and engine, and according to the detected value of oxynitrides, the revolving speed of engine and hair
The fuel delivery per cycle of motivation determines engine currently corresponding detecting state；Determine the detected value of oxynitrides with it is preset
The deviation of oxynitrides model value；Deviation is compared with predetermined deviation threshold value；According to compare obtained result with
And detecting state selects corresponding regulation measure, to control the discharge amount of oxynitrides.Using method provided by the invention, control
The oxynitrides of engine emission processed reduces the transfer pressure of post-processing in reasonable range, and passes through regulation hair
The parameter of motivation realizes the discharge of closed loop regulation oxynitrides.
In device provided in an embodiment of the present invention, judging unit in the regulation device of above-mentioned oxynitride discharge can
To be configured that
Subelement is determined, for determining the corresponding sub- condition of operation of every operating parameter；
First judgment sub-unit, for judging whether each described operating parameter meets the sub- condition of corresponding operation,
When each operating parameter is all satisfied the sub- condition of corresponding operation, it is described pre- to determine that every operating parameter meets
If detection service condition.
In device provided in an embodiment of the present invention, first in the regulation device of above-mentioned oxynitride discharge determines list
Member is configurable to:
Second judgment sub-unit, for judging the revolving speed of the engine whether in preset rotation speed threshold interval and institute
The fuel delivery per cycle of engine is stated whether in preset loop fuel delivery threshold interval and the oxynitrides of the engine
Detected value whether in default oxynitrides threshold interval；
Determine subelement, for the revolving speed when the engine in the preset rotation speed threshold interval, and described starts
The fuel delivery per cycle of machine is in the preset loop fuel delivery threshold interval, and the detected value of the oxynitrides of the engine
When in default oxynitrides threshold interval, determine that currently corresponding detecting state is stable state to the engine, otherwise, it is determined that
Currently corresponding detecting state is transient state to the engine.
In device provided in an embodiment of the present invention, regulation unit in the regulation device of above-mentioned oxynitride discharge can
To be configured that
First choice subelement, for judging within the current detection period, the engine is defeated according to the comparison result
Whether the detected value of oxynitrides out meets preset outputting standard value；When the detected value of the oxynitrides is greater than institute
When stating preset outputting standard value, preset stable state control correction strategy is called, is adjusted corresponding with the engine pre-
If regulating and controlling parameter, to control the engine to the discharge amount of oxynitrides.
In device provided in an embodiment of the present invention, regulation unit in the regulation device of above-mentioned oxynitride discharge can
To be configured that
Second selection subelement, for judging within the current detection period, the engine is defeated according to the comparison result
Whether the detected value of oxynitrides out meets preset outputting standard value；When the detected value of the oxynitrides is greater than institute
When stating preset outputting standard value, preset transient control correction strategy is called, is adjusted corresponding with the engine pre-
If regulating and controlling parameter, to control the engine to the discharge amount of oxynitrides.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system or
For system embodiment, since it is substantially similar to the method embodiment, so describing fairly simple, related place is referring to method
The part of embodiment illustrates.System and system embodiment described above is only schematical, wherein the conduct
The unit of separate part description may or may not be physically separated, component shown as a unit can be or
Person may not be physical unit, it can and it is in one place, or may be distributed over multiple network units.It can root
According to actual need that some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.Ordinary skill
Personnel can understand and implement without creative efforts.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of regulation method of oxynitride discharge characterized by comprising
When meeting default enabled condition, within the current detection period, obtain in engine operation process, with the engine pair
The every operating parameter answered, and judge whether every operating parameter meets preset detection service condition；
When every operating parameter is all satisfied the preset detection service condition, the nitrogen under the detecting state is obtained
The fuel delivery per cycle of the detected value of oxygen compound, the revolving speed of the engine and the engine；
According to the fuel delivery per cycle of the detected value of the oxynitrides, the revolving speed of the engine and the engine, determine
The current corresponding detecting state of the engine；
Determine the detected value of the oxynitrides and the deviation of preset oxynitrides model value；
The deviation is compared with predetermined deviation threshold value, obtains comparison result；
Corresponding regulation measure is selected according to the comparison result and the detecting state, to control the discharge of oxynitrides
Amount.
2. the method according to claim 1, wherein the preset detection service condition includes multiple operation
Condition, it is described to judge whether every operating parameter meets preset detection service condition, comprising:
Determine the corresponding sub- condition of operation of every operating parameter；
Judge whether each described operating parameter meets the sub- condition of corresponding operation；
When each operating parameter is all satisfied the sub- condition of corresponding operation, determine that every operating parameter meets institute
State preset detection service condition.
3. the method according to claim 1, wherein the detected value according to the oxynitrides, described
The fuel delivery per cycle of the revolving speed of engine and the engine determines the engine currently corresponding detecting state, comprising:
Judge the engine revolving speed whether in preset rotation speed threshold interval and the fuel delivery per cycle of the engine whether
In preset loop fuel delivery threshold interval and whether the detected value of the oxynitrides of the engine is in default nitrogen oxidation
It closes in object threshold interval；
When the revolving speed of the engine is in the preset rotation speed threshold interval, and the fuel delivery per cycle of the engine is described
In preset loop fuel delivery threshold interval, and the detected value of the oxynitrides of the engine is in default oxynitrides threshold value
When in section, determine that currently corresponding detecting state is stable state to the engine, otherwise, it is determined that the engine is currently corresponding
Detecting state is transient state.
4. according to the method described in claim 3, it is characterized in that, when currently corresponding detecting state is stable state to the engine
When, it is described to select corresponding regulation measure according to the comparison result and the detecting state, to control oxynitrides
Discharge amount, comprising:
According to the comparison result, judge within the current detection period, the detected value of the oxynitrides of the engine output
Whether preset outputting standard value is met；
When the detected value of the oxynitrides is greater than the preset outputting standard value, preset stable state is called to control
Correction strategy adjusts default regulation parameter corresponding with the engine, to control the engine to the row of oxynitrides
High-volume.
5. according to the method described in claim 3, it is characterized in that, when currently corresponding detecting state is transient state to the engine
When, it is described to select corresponding regulation measure according to the comparison result and the detecting state, to control oxynitrides
Discharge amount, comprising:
According to the comparison result, judge within the current detection period, the detected value of the oxynitrides of the engine output
Whether preset outputting standard value is met；
When the detected value of the oxynitrides is greater than the preset outputting standard value, preset transient control is called
Correction strategy adjusts default regulation parameter corresponding with the engine, to control the engine to the row of oxynitrides
High-volume.
6. a kind of regulation device of oxynitride discharge characterized by comprising
Judging unit, within the current detection period, obtaining in engine operation process when meeting default enabled condition,
Items operating parameter corresponding with the engine, and judge whether every operating parameter meets preset detection operation item
Part；
Acquiring unit, for obtaining described when every operating parameter is all satisfied the preset detection service condition
The fuel delivery per cycle of the detected value of oxynitrides under detecting state, the revolving speed of the engine and the engine；
First determination unit, revolving speed and the engine for detected value, the engine according to the oxynitrides
Fuel delivery per cycle, determine the engine currently corresponding detecting state；
Second determination unit, for determining the detected value of the oxynitrides and the deviation of preset oxynitrides model value
Value；
Comparing unit obtains comparison result for the deviation to be compared with predetermined deviation threshold value；
Regulate and control unit, for selecting corresponding regulation measure according to the comparison result and the detecting state, to control nitrogen
The discharge amount of oxygen compound.
7. device according to claim 6, which is characterized in that the judging unit, comprising:
Subelement is determined, for determining the corresponding sub- condition of operation of every operating parameter；
First judgment sub-unit, for judging whether each described operating parameter meets the sub- condition of corresponding operation, when each
When a operating parameter is all satisfied corresponding operation sub- condition, it is described preset to determine that every operating parameter meets
Detect service condition.
8. device according to claim 6, first determination unit, comprising:
Second judgment sub-unit, for judging the revolving speed of the engine whether in preset rotation speed threshold interval and the hair
Whether the fuel delivery per cycle of motivation is in preset loop fuel delivery threshold interval and the inspection of the oxynitrides of the engine
Whether measured value is in default oxynitrides threshold interval；
Determine subelement, for the revolving speed when the engine in the preset rotation speed threshold interval, and the engine
Fuel delivery per cycle is in the preset loop fuel delivery threshold interval, and the detected value of the oxynitrides of the engine is pre-
If when in oxynitrides threshold interval, determining that currently corresponding detecting state is stable state to the engine, otherwise, it is determined that described
Currently corresponding detecting state is transient state to engine.
9. device according to claim 8, which is characterized in that the regulation unit, comprising:
First choice subelement, for judging within the current detection period according to the comparison result, the engine output
Whether the detected value of oxynitrides meets preset outputting standard value；When the detected value of the oxynitrides is greater than described pre-
If outputting standard value when, call preset stable state control correction strategy, adjust default tune corresponding with the engine
Parameter is controlled, to control the engine to the discharge amount of oxynitrides.
10. device according to claim 8, which is characterized in that the regulation unit, comprising:
Second selection subelement, for judging within the current detection period according to the comparison result, the engine output
Whether the detected value of oxynitrides meets preset outputting standard value；When the detected value of the oxynitrides is greater than described pre-
If outputting standard value when, call preset transient control correction strategy, adjust default tune corresponding with the engine
Parameter is controlled, to control the engine to the discharge amount of oxynitrides.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113550835A (en) * | 2020-04-24 | 2021-10-26 | 北京福田康明斯发动机有限公司 | Pollutant emission control method and system, storage medium, driving computer and vehicle |
| CN114236050A (en) * | 2021-12-13 | 2022-03-25 | 潍柴动力股份有限公司 | Nitrogen-oxygen sensor control method and device |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1134371A2 (en) * | 2000-03-17 | 2001-09-19 | Ford Global Technologies, Inc. | Method and apparatus for controlling lean operation of an internal combustion engine |
| EP1344910A2 (en) * | 2002-03-15 | 2003-09-17 | Toyota Jidosha Kabushiki Kaisha | Exhaust-emission purifying apparatus for internal combustion engine |
| WO2007048961A2 (en) * | 2005-10-27 | 2007-05-03 | Renault S.A.S | Device for treating nitrogen oxides of motor vehicle exhaust gases |
| CN101960128A (en) * | 2008-03-07 | 2011-01-26 | 罗伯特.博世有限公司 | Method and device for distinguishing an erroneously expected concentration from an erroneously detected concentration of an exhaust gas component of an internal combustion engine |
| CN102191980A (en) * | 2010-03-05 | 2011-09-21 | 罗伯特·博世有限公司 | Method for operating scr catalytic converter |
| CN103511048A (en) * | 2013-10-08 | 2014-01-15 | 潍柴动力股份有限公司 | Emission monitoring and controlling method and device of OBD system |
| CN103590876A (en) * | 2013-11-19 | 2014-02-19 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Diesel engine tail gas purifying method |
| CN104220711A (en) * | 2012-04-10 | 2014-12-17 | 沃尔沃拉斯特瓦格纳公司 | A self-diagnosing method for diagnosing a SCR system |
| CN105224730A (en) * | 2015-09-17 | 2016-01-06 | 西南林业大学 | The original NO of a kind of high pressure common rail electric-controlled diesel engine 2forecasting of discharged quantity method |
| CN105715388A (en) * | 2014-12-02 | 2016-06-29 | 山东申普交通科技有限公司 | Precise control method for metering valves of exhaust gas recycling system |
| CN106932207A (en) * | 2017-03-17 | 2017-07-07 | 广州汽车集团股份有限公司 | Vehicle discharge scaling method and the system of vehicle |
| CN108150300A (en) * | 2017-12-21 | 2018-06-12 | 潍柴动力股份有限公司 | A kind of modification method and device of Diesel NOx original row model value |
| CN108868976A (en) * | 2018-06-19 | 2018-11-23 | 北京航空航天大学 | A kind of two-in-series SCR system urea jet law cloud computing method based on PSO |
| CN109098825A (en) * | 2018-09-21 | 2018-12-28 | 南京蔚岚环境技术研究院有限公司 | A kind of six emission purifying system controller of diesel vehicle state and its control method |
| WO2019011779A1 (en) * | 2017-07-14 | 2019-01-17 | Lean Marine Sweden Ab | Method for controlling the propulsion of a ship |
| DE102017214444A1 (en) * | 2017-08-18 | 2019-02-21 | Continental Automotive Gmbh | A method of operating a three-way catalyst having exhaust aftertreatment system of an internal combustion engine and exhaust aftertreatment system |
-
2019
- 2019-03-29 CN CN201910252950.6A patent/CN109944706B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1134371A2 (en) * | 2000-03-17 | 2001-09-19 | Ford Global Technologies, Inc. | Method and apparatus for controlling lean operation of an internal combustion engine |
| EP1344910A2 (en) * | 2002-03-15 | 2003-09-17 | Toyota Jidosha Kabushiki Kaisha | Exhaust-emission purifying apparatus for internal combustion engine |
| WO2007048961A2 (en) * | 2005-10-27 | 2007-05-03 | Renault S.A.S | Device for treating nitrogen oxides of motor vehicle exhaust gases |
| CN101960128A (en) * | 2008-03-07 | 2011-01-26 | 罗伯特.博世有限公司 | Method and device for distinguishing an erroneously expected concentration from an erroneously detected concentration of an exhaust gas component of an internal combustion engine |
| CN102191980A (en) * | 2010-03-05 | 2011-09-21 | 罗伯特·博世有限公司 | Method for operating scr catalytic converter |
| CN104220711A (en) * | 2012-04-10 | 2014-12-17 | 沃尔沃拉斯特瓦格纳公司 | A self-diagnosing method for diagnosing a SCR system |
| CN103511048A (en) * | 2013-10-08 | 2014-01-15 | 潍柴动力股份有限公司 | Emission monitoring and controlling method and device of OBD system |
| CN103590876A (en) * | 2013-11-19 | 2014-02-19 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Diesel engine tail gas purifying method |
| CN105715388A (en) * | 2014-12-02 | 2016-06-29 | 山东申普交通科技有限公司 | Precise control method for metering valves of exhaust gas recycling system |
| CN105224730A (en) * | 2015-09-17 | 2016-01-06 | 西南林业大学 | The original NO of a kind of high pressure common rail electric-controlled diesel engine 2forecasting of discharged quantity method |
| CN106932207A (en) * | 2017-03-17 | 2017-07-07 | 广州汽车集团股份有限公司 | Vehicle discharge scaling method and the system of vehicle |
| WO2019011779A1 (en) * | 2017-07-14 | 2019-01-17 | Lean Marine Sweden Ab | Method for controlling the propulsion of a ship |
| DE102017214444A1 (en) * | 2017-08-18 | 2019-02-21 | Continental Automotive Gmbh | A method of operating a three-way catalyst having exhaust aftertreatment system of an internal combustion engine and exhaust aftertreatment system |
| CN108150300A (en) * | 2017-12-21 | 2018-06-12 | 潍柴动力股份有限公司 | A kind of modification method and device of Diesel NOx original row model value |
| CN108868976A (en) * | 2018-06-19 | 2018-11-23 | 北京航空航天大学 | A kind of two-in-series SCR system urea jet law cloud computing method based on PSO |
| CN109098825A (en) * | 2018-09-21 | 2018-12-28 | 南京蔚岚环境技术研究院有限公司 | A kind of six emission purifying system controller of diesel vehicle state and its control method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113550835A (en) * | 2020-04-24 | 2021-10-26 | 北京福田康明斯发动机有限公司 | Pollutant emission control method and system, storage medium, driving computer and vehicle |
| CN113550835B (en) * | 2020-04-24 | 2023-07-25 | 北京福田康明斯发动机有限公司 | Pollutant emission control method, system, storage medium, driving computer and vehicle |
| CN114236050A (en) * | 2021-12-13 | 2022-03-25 | 潍柴动力股份有限公司 | Nitrogen-oxygen sensor control method and device |
| CN114236050B (en) * | 2021-12-13 | 2024-02-20 | 潍柴动力股份有限公司 | Nitrogen-oxygen sensor control method and device |
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