CN106401662A - Method and system for controlling changeable nozzle pressurizer - Google Patents
Method and system for controlling changeable nozzle pressurizer Download PDFInfo
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- CN106401662A CN106401662A CN201510451573.0A CN201510451573A CN106401662A CN 106401662 A CN106401662 A CN 106401662A CN 201510451573 A CN201510451573 A CN 201510451573A CN 106401662 A CN106401662 A CN 106401662A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention discloses a method and system for controlling a changeable nozzle pressurizer. The method includes: acquiring a given pressurizing pressure value according to a calculated pressurizing pressure demand value and a calculated pressurizing pressure limit value; performing PID calculation according to a difference between the given pressurizing pressure value and an actual measured pressurizing pressure value so as to acquire a nozzle ring position demand value of the changeable nozzle pressurizer; adding the nozzle ring position demand value and a pressurizing feed forward value to acquire a nozzle ring initial position given value; acquiring a nozzle ring position maximum value from an altitude associated basic pulse chart matching an altitude of a place where an engine is located according to the rotation speed and the torque of the engine; and using the nozzle ring position maximum value to perform limiting value treatment on the nozzle ring initial position given value so as to acquire a nozzle ring position given value, wherein the nozzle ring position given value is used for controlling a position of a nozzle ring of the changeable nozzle pressurizer. The method and the system can effectively control response of the changeable nozzle pressurizer, and then overspeed risk can be avoided when the intake resistance or the pressurizing pressure is increased.
Description
Technical field
The application is related to automobile technical field, more particularly, it relates to a kind of control of variable-nozzle booster
Method and system processed.
Background technology
Turbocharger be a kind of using the dump energy in engine exhaust come the air pump of work.Wherein
Exhaust gas driven turbine wheel assembly be connected with compressor impeller.When turbocharger rotor rotates,
Substantial amounts of compressed air is sent in the combustion chamber of engine.Air due to entering engine increases, institute
Gone with allowing more fuel oils to be injected in engine, so that engine is under conditions of size constancy
Produce bigger power, burning can also be improved simultaneously, reduce discharge and noise, realize the mesh of environmental protection and energy saving
's.
Variable-nozzle booster has the nozzle vane of one group of variable-angle, and the angle change of nozzle vane is
Controlled according to the change of engine operating condition by the ECU of electric-control motor, ensure that turbocharger
Operating mode be in Optimized Matching with the Operation Conditions of engine all the time, so that engine performance is comprehensively carried
High.It has been widely used in passenger car and commercial car, can coverage power sending out from 50KW to 500KW
Motivation.
At present only passing through Boost-Pressure-Desired, PID output and when booster is controlled to becoming nozzle and increasing
The position pressure applicator monodrome that increases is controlled to variable-nozzle booster, not to Different Altitude, rotating speed and torsion
Under square, the nozzle ring position of variable-nozzle booster is limited, thus being unable to the response of effective control booster,
When intake resistance or booster pressure ratio become big, variable-nozzle booster has hypervelocity risk.
Content of the invention
In view of this, the application provides a kind of control method of variable-nozzle booster and system, is used for keeping away
Exempt from variable-nozzle booster and hypervelocity risk occurs.
To achieve these goals it is proposed that scheme as follows：
A kind of control method of variable-nozzle booster, comprises the steps：
Engine speed according to engine and engine torque, it is pressurized using first foundation arteries and veins spectrogram
Pressure requirements；
According to revising the intake air temperature of charge flow rate and described engine, utilizing the second basic arteries and veins spectrogram, obtain
To boost pressure limits value；
Take less value in described Boost-Pressure-Desired value and boost pressure limits value, by described less value
As given boost pressure value；
The difference of described given boost pressure value and actual supercharge pressure value is carried out PID as supercharging foundation
Calculate, obtain the nozzle ring position requirements of described variable-nozzle booster；
It is pressurized according to described engine speed and described engine torque, using the 3rd basic arteries and veins spectrogram
Feedforward value；
By described nozzle ring position requirements with described supercharging feedforward value be added obtain nozzle ring position tentatively to
Definite value；
According to described engine speed and described engine torque, using the multiple seas with poster height correlation
Pull out the height above sea level relevant rudimentary arteries and veins spectrogram highly matching with local poster in relevant rudimentary arteries and veins spectrogram and obtain nozzle
Ring position maximum；
Using described nozzle ring position maximum, to described nozzle ring position, preliminary set-point carries out limit value, obtains
Nozzle ring position set-point to the nozzle ring position demand for meeting variable-nozzle booster.
Optionally, the plurality of height above sea level relevant rudimentary arteries and veins spectrogram includes：
The first height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 0 meter of height above sea level；
The second height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 1000 meters of height above sea level；
The threeth height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 2000 meters of height above sea level；
The fourth height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 3000 meters of height above sea level；
The fiveth height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 4000 meters of height above sea level；
The sixth height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 5000m height above sea level.
Optionally, the height above sea level corresponding to described height above sea level relevant height as described local poster height
When within the default altitude ranges centered on value, judge that described local height above sea level is related to described height above sea level
Basic arteries and veins spectrogram matches.
Optionally, described default altitude ranges include 0～300 meter.
A kind of control system of variable-nozzle booster, including：
First foundation arteries and veins spectrogram matching module, for according to the engine speed of engine and engine torque,
Obtain Boost-Pressure-Desired value using first foundation arteries and veins spectrogram；
Second basic arteries and veins spectrogram matching module, for according to the air inlet revising charge flow rate and described engine
Temperature, using the second basic arteries and veins spectrogram, obtain boost pressure limits value；
Comparison module, is used for taking less value in described Boost-Pressure-Desired value and boost pressure limits value,
Using described less value as given boost pressure value；
PID computing module, for using the difference of described given boost pressure value and actual supercharge pressure value as
Supercharging, according to carrying out PID calculating, obtains the nozzle ring position requirements of described variable-nozzle booster；
3rd basic arteries and veins spectrogram matching module, for according to described engine speed and described engine torque,
Obtain being pressurized feedforward value using the 3rd basic arteries and veins spectrogram；
Tentatively give module, be used for being added described nozzle ring position requirements with described supercharging feedforward value
To the preliminary set-point of nozzle ring position；
Height above sea level relevant rudimentary arteries and veins spectrogram matching module, for according to described engine speed and described engine
Moment of torsion, using with multiple height above sea level relevant rudimentary arteries and veins spectrograms of poster height correlation in local poster height phase
The height above sea level relevant rudimentary arteries and veins spectrogram of coupling obtains nozzle ring position maximum；
Limit module, for tentatively given to described nozzle ring position using described nozzle ring position maximum
Value carries out limit value, obtains the nozzle ring position of the nozzle ring position demand for meeting variable-nozzle booster
Set-point.
Optionally, the plurality of height above sea level relevant rudimentary arteries and veins spectrogram includes：
The first height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 0 meter of height above sea level；
The second height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 1000 meters of height above sea level；
The threeth height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 2000 meters of height above sea level；
The fourth height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 3000 meters of height above sea level；
The fiveth height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 4000 meters of height above sea level；
The sixth height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 5000m height above sea level.
Optionally, the height above sea level corresponding to described height above sea level relevant height as described local poster height
When within the default altitude ranges centered on value, judge that described local height above sea level is related to described height above sea level
Basic arteries and veins spectrogram matches.
Optionally, described default altitude ranges include 0～300 meter.
It can be seen from above-mentioned technical scheme that, this application discloses a kind of control of variable-nozzle booster
Method and system, the method and system are first according to calculated Boost-Pressure-Desired value and boost pressure
Limit the given boost pressure value asked, being then calculated through PID with actual measurement boost pressure value can
Become the nozzle ring position requirements of nozzle booster, and comprehensive supercharging feedforward is worth at the beginning of nozzle ring further
Step puts set-point, afterwards, using the engine speed of engine and engine torque from engine institute
The height above sea level relevant rudimentary arteries and veins spectrogram matching in the height above sea level on ground obtains nozzle ring position maximum, finally
Using this nozzle ring position maximum, nozzle ring rough location set-point is carried out with limit value process and obtain nozzle ring
Position set-point, the position that this nozzle ring position set-point is used for the nozzle ring to variable-nozzle booster is entered
Row controls.Because this control method and system are carried out to the position of nozzle ring using nozzle ring position maximum
Limit such that it is able to the response of effective control variable-nozzle booster, and then in intake resistance or booster
Pressure ratio can be prevented effectively from it and hypervelocity risk when becoming big.
Brief description
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to reality
The accompanying drawing applying required use in example or description of the prior art be briefly described it should be apparent that, below
Accompanying drawing in description is only some embodiments of the present application, for those of ordinary skill in the art,
On the premise of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
A kind of flow chart of the control method of variable-nozzle booster that Fig. 1 provides for the embodiment of the present application；
A kind of signal of the control system of variable-nozzle booster that Fig. 2 provides for another embodiment of the application
Figure.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out
Clearly and completely describe it is clear that described embodiment is only some embodiments of the present application, and
It is not all, of embodiment.Based on the embodiment in the application, those of ordinary skill in the art are not making
The every other embodiment being obtained under the premise of going out creative work, broadly falls into the scope of the application protection.
Embodiment one
A kind of flow chart of the control method of variable-nozzle booster that Fig. 1 provides for the embodiment of the present application.
As shown in figure 1, the control method of the variable-nozzle booster of the present embodiment offer comprises the steps：
S101：Calculate Boost-Pressure-Desired value.
Engine speed according to the engine obtaining and engine torque, engine torque is engine
Output torque, using engine speed and engine torque on first foundation arteries and veins spectrogram corresponding thereto
Make a look up, thus obtaining the Boost-Pressure-Desired value required for engine.
S102：Calculate boost pressure limit value.
Correction charge flow rate that electronic control unit according to engine calculates according to parameters such as current power and
The intake air temperature of this engine, using this correction charge flow rate with intake air temperature relative with this two parameters
Make a look up, thus obtaining boost pressure limit value on the second basic arteries and veins spectrogram answered.
S103：Calculate given boost pressure value.
The Boost-Pressure-Desired value that previous step is obtained and boost pressure limit and are compared, and therefrom look for
Go out less value, using this less value as given boost pressure value.
S104：Calculate nozzle ring position requirements.
This step needs to obtain the actual supercharge pressure value of this variable-nozzle booster output, then will be above-mentioned
Given boost pressure value and this actual supercharge pressure value carry out PID calculating, then result of calculation is carried out PID
Limit value, the result after the limit value obtaining is the nozzle ring position requirements of this variable-nozzle booster.
S105：Calculate supercharging feedforward value.
According to above-mentioned engine speed and engine torque, using engine speed and engine torque with
Make a look up, thus obtaining required for variable-nozzle booster on its 3rd corresponding basic arteries and veins spectrogram
Supercharging feedforward value.
S106：Calculate the preliminary set-point of nozzle ring position.
By said nozzle ring position requirements with supercharging feedforward value sued for peace, obtain and be to variable
Nozzle booster is controlled the required preliminary set-point of nozzle ring position.If utilizing this set-point
Variable-nozzle booster is directly controlled may result in hypervelocity, therefore also needs to carry out following limit value.
S107：Calculate nozzle ring position maximum.
May travel in Different Altitude Regions in view of automobile, and the air pressure of Different Altitude Regions is that have difference
Other, particularly its air pressure difference of plains region is compared in high altitude localities is sizable, if being not added with examining
Consider then can lead to run unstable.Therefore the application utilizes engine speed and the engine torque of engine
The height above sea level relevant rudimentary arteries and veins spectrogram being matched with the height above sea level travelling area is calculated, obtains and be somebody's turn to do
The nozzle ring position maximum that height above sea level is adapted.
Height above sea level relevant rudimentary arteries and veins spectrogram mentioned above have multiple, in order that automobile can adapt to different
Altitude Regions, the application default height above sea level relevant rudimentary arteries and veins spectrogram has 6, includes respectively and 0 meter of sea
Pull out the first corresponding height above sea level relevant rudimentary arteries and veins spectrogram related to 1000 meters of second corresponding height above sea level of height above sea level
The basic arteries and veins spectrogram threeth height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 2000 meters of height above sea level and 3000 meters
The 4th corresponding height above sea level relevant rudimentary arteries and veins spectrogram of the height above sea level fiveth height above sea level phase corresponding with 4000 meters of height above sea level
Close basic arteries and veins spectrogram and the sixth height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 5000m height above sea level.
Because automobile their location can not possibly be completely corresponding with integer-valued height above sea level, it is therefore assumed that at automobile
When within the default altitude ranges centered on this integer value, then estimate and be suitable for and this integer-valued height above sea level
Corresponding height above sea level relevant rudimentary arteries and veins spectrogram, preferably 0～300 meter of this default altitude ranges.Should for distance
Integer value height above sea level apart from each other, then utilize the method for interpolation to calculate nozzle ring position maximum.
S108：Calculate nozzle ring position set-point.
Using nozzle ring position maximum above, to nozzle ring position, preliminary set-point carries out limit value, both such as
The preliminary set-point of nozzle ring position that fruit actually obtains is less than nozzle ring position maximum, then by former nozzle ring
The preliminary set-point in position is controlled to variable-nozzle booster as nozzle ring position set-point；As fruit
The preliminary set-point of nozzle ring position that border obtains is more than or equal to nozzle ring position maximum, then by this nozzle
Ring position maximum is controlled to variable-nozzle booster as nozzle ring position set-point.
From technique scheme as can be seen that present embodiments providing a kind of control of variable-nozzle booster
Method, the method is first according to giving that calculated Boost-Pressure-Desired value and boost pressure restriction are asked
Boost pressure value, is then passed through and actual measurement boost pressure value carries out PID and is calculated variable-nozzle increasing
The nozzle ring position requirements of depressor, and further comprehensive supercharging feedforward be worth to nozzle ring rough location to
Definite value, afterwards, using engine engine speed and engine torque from sea on-site with engine
The height above sea level relevant rudimentary arteries and veins spectrogram that degree of lifting matches obtains nozzle ring position maximum, finally utilizes this spray
Mouth ring position maximum nozzle ring rough location set-point is carried out limit value process obtain nozzle ring position give
Value, the position that this nozzle ring position set-point is used for the nozzle ring to variable-nozzle booster is controlled.
Using nozzle ring position maximum, the position of nozzle ring is defined due to this control method such that it is able to
The response of effective control variable-nozzle booster, and then can have when becoming big in intake resistance or booster pressure ratio
Effect avoids it hypervelocity risk.
Embodiment two
A kind of signal of the control system of variable-nozzle booster that Fig. 2 provides for another embodiment of the application
Figure.
As shown in Fig. 2 the control system of the variable-nozzle booster of the present embodiment offer includes first foundation
The basic arteries and veins spectrogram matching module 20 of arteries and veins spectrogram matching module 10, second, comparison module 30, PID calculate mould
The basic arteries and veins spectrogram matching module 50 of block the 40, the 3rd, tentatively given module 60, height above sea level relevant rudimentary arteries and veins spectrogram
Matching module 70 and limit module 80.
First foundation arteries and veins spectrogram matching module 10 is used for calculating Boost-Pressure-Desired value.
I.e. the engine speed according to the engine obtaining and engine torque are in the first base corresponding thereto
Make a look up on plinth arteries and veins spectrogram, thus obtaining the Boost-Pressure-Desired value required for engine.
Second basic arteries and veins spectrogram matching module 20 is used for calculating boost pressure limit value.
The correction charge flow rate that i.e. electronic control unit according to engine calculates according to parameters such as current power
With the intake air temperature of this engine, the corresponding with this two parameters second basic arteries and veins spectrogram is looked into
Look for, thus obtaining boost pressure limit value.
Comparison module 30 is used for the Boost-Pressure-Desired value that first foundation arteries and veins spectrogram matching module 10 is obtained
Limit with the boost pressure of the second basic arteries and veins spectrogram matching module 20 and be compared, therefrom find out less value,
And using this less value as given boost pressure value.
PID computing module 40 is used for the given boost pressure value obtaining comparison module 30 and this variable-nozzle
The actual supercharge pressure value of booster output carries out PID calculating, then result of calculation is carried out PID limit value,
Result after the limit value obtaining is the nozzle ring position requirements of this variable-nozzle booster.
3rd basic arteries and veins spectrogram matching module 50 be used for using above-mentioned engine speed and engine torque with
Make a look up, thus obtaining required for variable-nozzle booster on its 3rd corresponding basic arteries and veins spectrogram
Supercharging feedforward value.
Tentatively given module 60 is used for said nozzle ring position requirements are sued for peace with supercharging feedforward value,
The preliminary set-point of nozzle ring position required for obtaining variable-nozzle booster is controlled.
Height above sea level relevant rudimentary arteries and veins spectrogram matching module 70 is used for engine speed and engine using engine
The height above sea level relevant rudimentary arteries and veins spectrogram that moment of torsion pair is matched with the height above sea level travelling area calculates, and obtains
The nozzle ring position maximum being adapted with this height above sea level.
Height above sea level relevant rudimentary arteries and veins spectrogram mentioned above have multiple, in order that automobile can adapt to different
Altitude Regions, the application default height above sea level relevant rudimentary arteries and veins spectrogram has 6, includes respectively and 0 meter of sea
Pull out the first corresponding height above sea level relevant rudimentary arteries and veins spectrogram related to 1000 meters of second corresponding height above sea level of height above sea level
The basic arteries and veins spectrogram threeth height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 2000 meters of height above sea level and 3000 meters
The 4th corresponding height above sea level relevant rudimentary arteries and veins spectrogram of the height above sea level fiveth height above sea level phase corresponding with 4000 meters of height above sea level
Close basic arteries and veins spectrogram and the sixth height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 5000m height above sea level.
Because automobile their location can not possibly be completely corresponding with integer-valued height above sea level, it is therefore assumed that at automobile
When within the default altitude ranges centered on this integer value, then estimate and be suitable for and this integer-valued height above sea level
Corresponding height above sea level relevant rudimentary arteries and veins spectrogram, preferably 0～300 meter of this default altitude ranges.Should for distance
Integer value height above sea level apart from each other, then utilize the method for interpolation to calculate nozzle ring position maximum.
Limit module 80 is used for the nozzle ring position obtaining using height above sea level relevant rudimentary arteries and veins spectrogram matching module 70
Preliminary set-point carries out limit value to nozzle ring position to put maximum, if the nozzle ring position both having actually obtained
Preliminary set-point is less than nozzle ring position maximum, then using preliminary for former nozzle ring position set-point as nozzle
Ring position set-point is controlled to variable-nozzle booster；If the nozzle ring position actually obtaining is preliminary
Set-point is more than or equal to nozzle ring position maximum, then using this nozzle ring position maximum as nozzle ring
Position set-point is controlled to variable-nozzle booster.
From technique scheme as can be seen that present embodiments providing a kind of control of variable-nozzle booster
System, this system is first according to giving that calculated Boost-Pressure-Desired value and boost pressure restriction are asked
Boost pressure value, is then calculated variable-nozzle booster with actual measurement boost pressure value through PID
Nozzle ring position requirements, and comprehensive supercharging feedforward is worth to nozzle ring rough location set-point further,
Afterwards, using engine engine speed and engine torque from height above sea level on-site with engine
The height above sea level relevant rudimentary arteries and veins spectrogram matching obtains nozzle ring position maximum, finally utilizes this nozzle ring position
Put maximum nozzle ring rough location set-point is carried out limit value process obtain nozzle ring position set-point, should
The position that nozzle ring position set-point is used for the nozzle ring to variable-nozzle booster is controlled.Due to this
Systems approach is using the position to nozzle ring to the nozzle ring position maximum under Different Altitude, rotating speed and moment of torsion
Put and be defined such that it is able to the response of effective control variable-nozzle booster, so in intake resistance or
Booster pressure ratio can be prevented effectively from it and hypervelocity risk when becoming big.
In this specification, each embodiment is described by the way of going forward one by one, and each embodiment stresses
The difference with other embodiment, between each embodiment identical similar portion mutually referring to.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this Shen
Please.Multiple modifications to these embodiments will be apparent from for those skilled in the art,
Generic principles defined herein can be in the case of without departing from spirit herein or scope, at it
Realize in its embodiment.Therefore, the application is not intended to be limited to the embodiments shown herein, and
It is to fit to the wide scope consistent with principles disclosed herein and features of novelty.
Claims (8)
1. a kind of control method of variable-nozzle booster is it is characterised in that comprise the steps：
Engine speed according to engine and engine torque, it is pressurized using first foundation arteries and veins spectrogram
Pressure requirements；
According to revising the intake air temperature of charge flow rate and described engine, utilizing the second basic arteries and veins spectrogram, obtain
To boost pressure limits value；
Take less value in described Boost-Pressure-Desired value and boost pressure limits value, by described less value
As given boost pressure value；
The difference of described given boost pressure value and actual supercharge pressure value is carried out PID as supercharging foundation
Calculate, obtain the nozzle ring position requirements of described variable-nozzle booster；
It is pressurized according to described engine speed and described engine torque, using the 3rd basic arteries and veins spectrogram
Feedforward value；
By described nozzle ring position requirements with described supercharging feedforward value be added obtain nozzle ring position tentatively to
Definite value；
According to described engine speed and described engine torque, using the multiple seas with poster height correlation
Pull out the height above sea level relevant rudimentary arteries and veins spectrogram highly matching with local poster in relevant rudimentary arteries and veins spectrogram and obtain nozzle
Ring position maximum；
Using described nozzle ring position maximum, to described nozzle ring position, preliminary set-point carries out limit value, obtains
Nozzle ring position set-point to the nozzle ring position demand for meeting variable-nozzle booster.
2. control method as claimed in claim 1 is it is characterised in that the plurality of height above sea level relevant rudimentary
Arteries and veins spectrogram includes：
The first height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 0 meter of height above sea level；
The second height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 1000 meters of height above sea level；
The threeth height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 2000 meters of height above sea level；
The fourth height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 3000 meters of height above sea level；
The fiveth height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 4000 meters of height above sea level；
The sixth height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 5000m height above sea level.
3. control method as claimed in claim 2 is it is characterised in that as described local poster height exists
When within the default altitude ranges centered on height above sea level angle value corresponding to by described height above sea level relevant height,
Judge that described local height above sea level is matched with described height above sea level relevant rudimentary arteries and veins spectrogram.
4. control method as claimed in claim 3 is it is characterised in that described default altitude ranges include
0～300 meter.
5. a kind of control system of variable-nozzle booster is it is characterised in that include：
First foundation arteries and veins spectrogram matching module, for according to the engine speed of engine and engine torque,
Obtain Boost-Pressure-Desired value using first foundation arteries and veins spectrogram；
Second basic arteries and veins spectrogram matching module, for according to the air inlet revising charge flow rate and described engine
Temperature, using the second basic arteries and veins spectrogram, obtain boost pressure limits value；
Comparison module, is used for taking less value in described Boost-Pressure-Desired value and boost pressure limits value,
Using described less value as given boost pressure value；
PID computing module, for using the difference of described given boost pressure value and actual supercharge pressure value as
Supercharging, according to carrying out PID calculating, obtains the nozzle ring position requirements of described variable-nozzle booster；
3rd basic arteries and veins spectrogram matching module, for according to described engine speed and described engine torque,
Obtain being pressurized feedforward value using the 3rd basic arteries and veins spectrogram；
Tentatively give module, be used for being added described nozzle ring position requirements with described supercharging feedforward value
To the preliminary set-point of nozzle ring position；
Height above sea level relevant rudimentary arteries and veins spectrogram matching module, for according to described engine speed and described engine
Moment of torsion, using with multiple height above sea level relevant rudimentary arteries and veins spectrograms of poster height correlation in local poster height phase
The height above sea level relevant rudimentary arteries and veins spectrogram of coupling obtains nozzle ring position maximum；
Limit module, for tentatively given to described nozzle ring position using described nozzle ring position maximum
Value carries out limit value, obtains the nozzle ring position of the nozzle ring position demand for meeting variable-nozzle booster
Set-point.
6. control system as claimed in claim 5 is it is characterised in that the plurality of height above sea level relevant rudimentary
Arteries and veins spectrogram includes：
The first height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 0 meter of height above sea level；
The second height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 1000 meters of height above sea level；
The threeth height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 2000 meters of height above sea level；
The fourth height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 3000 meters of height above sea level；
The fiveth height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 4000 meters of height above sea level；
The sixth height above sea level relevant rudimentary arteries and veins spectrogram corresponding with 5000m height above sea level.
7. control system as claimed in claim 6 is it is characterised in that as described local poster height exists
When within the default altitude ranges centered on height above sea level angle value corresponding to by described height above sea level relevant height,
Judge that described local height above sea level is matched with described height above sea level relevant rudimentary arteries and veins spectrogram.
8. control system as claimed in claim 7 is it is characterised in that described default altitude ranges include
0～300 meter.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113250810A (en) * | 2021-06-29 | 2021-08-13 | 四川迅联达智能科技有限公司 | Method and system for stabilizing intake pressure of two-stroke engine |
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| CN113250810A (en) * | 2021-06-29 | 2021-08-13 | 四川迅联达智能科技有限公司 | Method and system for stabilizing intake pressure of two-stroke engine |
| CN113250810B (en) * | 2021-06-29 | 2021-10-01 | 四川迅联达智能科技有限公司 | Method and system for stabilizing intake pressure of two-stroke engine |
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| CN106401662B (en) | 2018-02-23 |
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