CN107608235A - A kind of adjustable two-step supercharging engine mockup building method and emulation platform - Google Patents
A kind of adjustable two-step supercharging engine mockup building method and emulation platform Download PDFInfo
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- CN107608235A CN107608235A CN201710867268.9A CN201710867268A CN107608235A CN 107608235 A CN107608235 A CN 107608235A CN 201710867268 A CN201710867268 A CN 201710867268A CN 107608235 A CN107608235 A CN 107608235A
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Abstract
The present embodiments relate to automotive electronics technical field of measurement and test, discloses a kind of adjustable two-step supercharging engine mockup building method and emulation platform.In the present invention, this method includes:Obtain the nonlinear multivariable differential equation group for characterizing adjustable two turbocharging engine;The Real-Time Model of adjustable two turbocharging engine is obtained to the decoupling simplification of nonlinear multivariable differential equation group.Embodiment of the present invention also discloses a kind of adjustable two-step supercharging engine emulation platform.Embodiment of the present invention can carry out semi-physical real-time simulation to adjustable two turbocharging engine, so as to be provided the foundation for the exploitation of engine and the control strategy of two turbocharging systems.
Description
Technical field
The present embodiments relate to automotive electronics technical field of measurement and test, more particularly to a kind of adjustable two-step supercharging engine mould
Type building method and emulation platform.
Background technology
In order to improve the power density of engine, it is conventional means to be equipped with exhaust gas turbocharge to engine, but commonly
Single type supercharging system be difficult to take into account low speed response and high-speed power problem, therefore propose adjustable two-step supercharging system to solve
The certainly contradictory problems.For adjustable two-step supercharging system, due to being related to the energy assignment problem of size booster, need simultaneously
Stability and dynamic response are taken into account, therefore the exploitation of control optimized algorithm is difficult point, it usually needs repeated tests.
Inventor has found that at least there are the following problems in the prior art:In existing engine semi-physical emulation platform, hair
Real-Time Model used by motivation (such as gasoline engine), it is substantially the whirlpool of conventional naturally aspirated engine or unit
Engine with supercharger is taken turns, the research of strategy can not be controlled to newest two-step supercharging system.In addition, existing two-step supercharging system
The building of system model is built using performance simulation softwares such as finite element modeling or GT-power, Fire more based on being calculated with performance
Mould, solved using the method for loop iteration.But this kind of two-step supercharging system model can not be realized in real time because operand is huge
Operation, thus the emulation for being controlled algorithm can not be also interacted with controller.
The content of the invention
The purpose of embodiment of the present invention is to provide a kind of adjustable two-step supercharging engine mockup building method and emulation
Platform, enabling semi-physical real-time simulation is carried out to adjustable two turbocharging engine, so as to be engine and two-stage
The exploitation of the control strategy of turbo charge system provides the foundation.
Taken in order to solve the above technical problems, embodiments of the present invention provide a kind of adjustable two-step supercharging engine mockup
Construction method, including:Obtain the nonlinear multivariable differential equation group for characterizing adjustable two turbocharging engine;To described polynary non-
Linear differential equation system decoupling simplification obtains the Real-Time Model of the adjustable two turbocharging engine.
Embodiments of the present invention additionally provide a kind of adjustable two-step supercharging engine emulation platform, including:Host computer, reality
When replicating machine, signal process box, controller, position sensor of valve and two-stage supercharger by-passing valve;The host computer communication
The real-time simulation machine is connected to, the real-time simulation machine communicates to connect with the controller;The real-time simulation machine also passes through
The signal process box connects the controller;The two-stage supercharger by-passing valve connects the controller and the valve position
Put sensor;The position sensor of valve is also connected with the signal process box;The real-time simulation machine is described for running
The Real-Time Model that position machine is built based on foregoing adjustable two-step supercharging engine mockup building method;The control
Device processed is used to run the control strategy of adjustable two turbocharging engine or the control strategy of two-stage turbocharger, described
The aperture that controller is additionally operable to control the two-stage supercharger by-passing valve is distributed with adjusting the energy for turbine of just arbitrarily downgrading;The valve
Door position sensor is used for the aperture for detecting the two-stage supercharger by-passing valve, and inputs to the real-time simulation machine.
Embodiment of the present invention in terms of existing technologies, is building what is characterized with nonlinear multivariable differential equation group
On the basis of the simulation model of adjustable two turbocharging engine, the decoupling simplification of nonlinear multivariable differential equation group is obtained can
The Real-Time Model of two turbocharging engine is adjusted, so that the real-time simulation mould of adjustable two turbocharging engine
The amount of calculation of type is greatly reduced, and then realizes the real-time simulation of adjustable two turbocharging engine, is engine control strategy
Research provide the foundation.Also, present embodiment can realize the real-time of nanosecond based on RT-LAB platforms, so as to rear
It is continuous with needing the motor combination of smaller step-length into the real-time that emulation is also can ensure that during hybrid power system.
In addition, described obtain the nonlinear multivariable differential equation group for characterizing adjustable two turbocharging engine, specific bag
Include:Build the simulation model of natural aspiration h type engine h;The simulation model of two-stage turbocharger is built respectively;To the nature
The simulation model of air-breathing h type engine h and the simulation model of two-stage turbocharger carry out combined debugging, obtain adjustable two-stage whirlpool
Take turns the simulation model based on nonlinear multivariable differential equation group of engine with supercharger.
In addition, obtain the emulation based on nonlinear multivariable differential equation group of adjustable two turbocharging engine described
After model, in addition to:To the emulation mould based on nonlinear multivariable differential equation group of the adjustable two turbocharging engine
Engine in type carries out the matching of two-stage turbocharger respectively.So that every one-level of two-stage turbocharger is all
Preferably operating point can be operated in, and the scope to work can be adapted with the working range of engine.
In addition, described to the imitative based on nonlinear multivariable differential equation group of the adjustable two turbocharging engine
After engine in true mode carries out the matching of two-stage turbocharger respectively, in addition to:If matching after the engine with
The performance of target engine is consistent, then obtain the target engine adjustable two turbocharging engine based on polynary non-
The simulation model of linear differential equation system.
In addition, the simulation model for building natural aspiration h type engine h, is specifically included:Using circulation mean parameter model
Build the simulation model of the natural aspiration h type engine h.
In addition, the simulation model of the natural aspiration h type engine h includes:Throttle model, intake and exhaust pipeline model, row
Temperature model, cylinder model, IC engine dynamic model and engine resistance torque model.
In addition, the simulation model for building two-stage turbocharger respectively, is specifically included:The two-stage turbocharger
Simulation model based on the turbo charge system conservation of energy, gaseous mass conservation and turbocompressor rate equation, and
Modeled with reference to the characteristic collection of illustrative plates of turbine and compressor.
In addition, the simulation model of the two-stage turbocharger includes:Compressor by-passing valve model, hiigh pressure stage compressor mould
By type, low-pressure stage compressor model, lower pressure stage turbocharger model, hiigh pressure stage turbocharger model and hiigh pressure stage turbine
Port valve model.Present embodiment by establishing the intake and exhaust pipeline model of engine and the kinetic simulation of turbocharger respectively
Type, so as to accurately reflect hysteresis phenomenon of the engine in accelerator.
In addition, the adjustable two turbocharging is obtained to nonlinear multivariable differential equation group decoupling simplification described
After the Real-Time Model of engine, in addition to:The Real-Time Model of the adjustable two turbocharging engine is carried out
Real time implementation.
Brief description of the drawings
One or more embodiments are illustrative by the picture in corresponding accompanying drawing, these exemplary theorys
The bright restriction not formed to embodiment, the element for having same reference numbers label in accompanying drawing are expressed as similar element, removed
Non- have a special statement, and composition does not limit the figure in accompanying drawing.
Fig. 1 is the flow chart according to the adjustable two-step supercharging engine mockup building method of first embodiment of the invention;
Fig. 2 is the structural representation according to the two turbocharging engine Real-Time Model of first embodiment of the invention
Figure;
Fig. 3 is the structural representation according to the two turbocharging engine emulation platform of second embodiment of the invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Each embodiment be explained in detail.However, it will be understood by those skilled in the art that in each embodiment party of the present invention
In formula, in order that reader more fully understands the application and proposes many ins and outs.But even if without these ins and outs
With many variations based on following embodiment and modification, the application technical scheme claimed can also be realized.
The first embodiment of the present invention is related to a kind of adjustable two-step supercharging engine mockup building method.Present embodiment
Adjustable two-step supercharging engine mockup building method include:Obtain and characterize the polynary non-thread of adjustable two turbocharging engine
Property differential equation group, the decoupling of nonlinear multivariable differential equation group is simplified and obtains the imitative in real time of adjustable two turbocharging engine
True mode.Embodiment of the present invention in terms of existing technologies, is building what is characterized with nonlinear multivariable differential equation group
On the basis of the simulation model of adjustable two turbocharging engine, the decoupling simplification of nonlinear multivariable differential equation group is obtained can
The Real-Time Model of two turbocharging engine is adjusted, so that the real-time simulation mould of adjustable two turbocharging engine
The amount of calculation of type is greatly reduced, and then realizes the real-time simulation of adjustable two turbocharging engine, is engine control strategy
Research provide the foundation.Details, which is entered, to be realized to the adjustable two-step supercharging engine mockup building method of present embodiment below
Row specific description, herein below only realize details for convenience of what understanding provided, not implement the necessary of this programme.
Adjustable two-step supercharging engine mockup building method in present embodiment is as shown in figure 1, specifically include step 101
To step 103.
Step 101:Obtain the nonlinear multivariable differential equation group for characterizing adjustable two turbocharging engine.
Step 101 specifically includes sub-step 1011 to sub-step 1017.
Sub-step 1011:Build the simulation model of natural aspiration h type engine h.
Specifically, the simulation model of circulation mean parameter model buildings natural aspiration h type engine h, this implementation can be used
Mode is not specifically limited for the mode of building of the simulation model of natural aspiration h type engine h.
Sub-step 1012:The simulation model of two-stage turbocharger is built respectively.
In present embodiment, the simulation model of two-stage turbocharger is independently built.Specifically, two-stage turbocharger
Simulation model can be using the turbo charge system conservation of energy, gaseous mass conservation and turbocompressor rate equation as base
Plinth, and combine the characteristic collection of illustrative plates modeling of turbine and compressor.Present embodiment is built for two-stage turbocharger simulation model
Mould mode is not specifically limited.
As shown in Fig. 2 the simulation model of natural aspiration h type engine h can include:Throttle model, intake and exhaust pipeline mould
Type (i.e. inlet manifold model and exhaust manifold model), row's temperature model, cylinder model, IC engine dynamic model, engine
The model of the conventional engine components such as moment of resistance model.Present embodiment is for the emulation mould for the natural aspiration h type engine h built
Type is not specifically limited.The simulation model of two-stage turbocharger can include:Compressor by-passing valve model, hiigh pressure stage compressor
Model, low-pressure stage compressor model, lower pressure stage turbocharger model, hiigh pressure stage turbocharger model and hiigh pressure stage turbine
By-passing valve model etc..The model of adjustable two turbocharging engine also includes:Charge air cooler and its pipeline model and big compression ring
Border model.In present embodiment, the simulation model of adjustable two turbocharging engine can be based on simulink platform buildings,
Present embodiment is not specifically limited for setting for this platform for simulation model.In present embodiment, each model built is adopted
Characterized with nonlinear multivariable differential equation group.It should be noted that illustrate herein be gasoline engine as engine when emulation
Model, in actual applications, simulation model when those skilled in the art can also build diesel engine as engine, herein not
Repeat again.
Wherein, atmospheric environment model is used for the atmospheric environment for providing the operation of two-step supercharging engine, mainly comprising intake and exhaust
Atmospheric pressure, temperature and humidity etc..Compressor model of just arbitrarily downgrading is mainly used in being compressed the gas for entering engine,
Low-pressure stage compressor first provides first-time compression, and hiigh pressure stage compressor carries out second-compressed, so as to improve the overall pressure tatio of gas,
Improve density of the induced air.Compressor by-passing valve model is used to adjust the gas flow Jing Guo hiigh pressure stage, so as to adjust overall pressure tatio, prevents
Surge.Charge air cooler is used to cool down compressed gas, improves density of the induced air, and intercooler pipe model is used to simulate the used of gas
Property, so as to emulate the hysteresis quality of turbocharger response.Throttle model is used to control the amount into the gas of engine.
Inlet manifold model is used to simulate inlet manifold volume, so as to the hysteresis quality of simulated engine air inlet response.Fuel injector, point
Fiery angle model is used for the oil spout and igniting for controlling engine.Cylinder model is used for simulated engine combustion chamber, realizes gaseous mixture
Combustion heat release and acting.The rotary inertia and dynamics of IC engine dynamic model simulated engine, so as to mould
Intend the response of engine speed.The delivery temperature that temperature model is used for simulated engine is arranged, for the calculating of turbine acting.Exhaust
Manifold model is as inlet manifold model, the response lag for simulated exhaust.On turbine of just arbitrarily downgrading, gas first passes through
Cross hiigh pressure stage turbine expansion acting, after done work again by low-pressure stage turbine expansion, improve the utilization rate of exhaust energy, done
Work(is all used for compressor compressed gas.Hiigh pressure stage turbine bypass valve model is used to distribute the exhaust energy that height arbitrarily downgrades turbine, from
And regulating system acting ability, and then adjust pressure ratio, optimization efficiency.It is seen that, present embodiment is built adjustable above
Two turbocharging engine simulation model, the control to two-step supercharging system can be achieved, two-step supercharging system can be reflected
The performance of engine after performance and supercharging.When studying the control strategy of turbocharged engine, the hysteresis of booster
It is important references index therein, therefore, present embodiment by establishing the intake and exhaust pipeline model and turbine of engine respectively
The kinetic model of booster, so as to accurately reflect hysteresis phenomenon of the engine in accelerator.Specifically, this implementation
Mode is by establishing the air inlet-outlet pipe model of turbo charge system, so as to reflect the hysteresis quality of gas, while by building
The kinetic model of vertical turbo charge system, so as to reflect the hysteresis quality of turbo charger speed change.
Sub-step 1013:The simulation model of simulation model and two-stage turbocharger to natural aspiration h type engine h enters
Row combined debugging, obtain the simulation model based on nonlinear multivariable differential equation group of adjustable two turbocharging engine.
Sub-step 1014:And to the emulation based on nonlinear multivariable differential equation group of adjustable two turbocharging engine
Engine in model carries out the matching of two-stage turbocharger respectively.
The step of matching approximately as:Compressor match point is selected, wherein, compressor match point can be according to adjustable two-stage
The requirement that the control characteristic and/or change height above sea level of turbo charge system are run to regulating power determines the match point of compressor.Then
According to the match point of the compressor of determination try to achieve overall pressure tatio, pressure ratio of just arbitrarily downgrading distribution, further according to operation point selection low-pressure stage or
Person's hiigh pressure stage, so that it may complete the matching of compressor.The matching way of turbine is as follows:Hiigh pressure stage turbine operating point is obtained, according to fortune
Row point selects hiigh pressure stage, obtains lower pressure stage turbine operating point, low-pressure stage is selected according to operating point.During above-mentioned matching,
By the distribution in view of turbocharger energy of just arbitrarily downgrading so that pressure charging system operational efficiency optimizes, while can also take into account
The dynamic response and pressure charging system of turbocharger can adapt to the wide scope traffic demand of wide height above sea level operation.Present embodiment
By for Engine Matching two-stage turbocharger, so that every one-level of two-stage turbocharger can be operated in preferably work
Condition point, and the scope to work can be adapted with the working range of engine, and then obtain the turbine matched with target engine
Pressure charging system.Present embodiment is not specifically limited for the specific implementation of matching.In some instances, can also omit
The step of matching, present embodiment are not specifically limited to this.
Sub-step 1015:Judge whether the engine after matching is consistent with the performance of target engine, if the institute after matching
State engine with the performance of target engine to be consistent, then perform sub-step 1016, otherwise, perform sub-step 1017.
Sub-step 1016:Obtain the adjustable two turbocharging engine of target engine based on nonlinear multivariable differential
The simulation model of equation group.
Sub-step 1017:The parameter of engine after being matched according to the parameter adjustment of target engine, then performs son again
Step 1015.
Step 102:The reality of adjustable two turbocharging engine is obtained to the decoupling simplification of nonlinear multivariable differential equation group
When simulation model.
Specifically, it is that the nonlinear multivariable differential equation group for characterizing each model is subjected to decoupling simplification, makes equation not
Need to solve by iterative calculation, and with some experimental data (experimental data of i.e. adjustable two turbocharging engine)
Ensure the accuracy of model, so, you can simplify nonlinear multivariable differential equation group, so that amount of calculation greatly reduces.Cause
This, present embodiment provide not only accurate simulation model, and amount of calculation is small, so as to meet that related control strategies are imitated
Genuine demand.
Step 103:Real time implementation is carried out to the Real-Time Model of adjustable two turbocharging engine.
Specifically, it is that the I/O mouths of model and real-time simulation machine are associated, makes adjustable two turbocharging engine
Real-Time Model can be run in real-time simulation machine.
It is noted that in present embodiment, the reality based on RT-LAB platforms to adjustable two turbocharging engine
When simulation model carry out real time implementation so that the Real-Time Model of obtained adjustable two turbocharging engine can transport
Row is on RT-LAB emulation platforms.Using real-time simulation of the RT-LAB real-time simulation platforms to adjustable two turbocharging engine
Model carries out real time implementation, so that the Real-Time Model of adjustable two turbocharging engine can operate in RT-LAB realities
When emulation platform.Because RT-LAB real-time simulation platforms can realize the real-time of nanosecond, it is possible to for subsequently with needs
The motor combination of smaller step-length provides Real-time ensuring technology into emulation during hybrid power system.It should be appreciated that present embodiment pair
It is not specifically limited in real time implementation platform.
Present embodiment compared with prior art, is being built with the adjustable two-stage of nonlinear multivariable differential equation group sign
On the basis of the simulation model of turbocharged engine, adjustable two-stage whirlpool is obtained to the decoupling simplification of nonlinear multivariable differential equation group
The Real-Time Model of engine with supercharger is taken turns, so that the calculating of the Real-Time Model of adjustable two turbocharging engine
Amount is greatly reduced, and then realizes the real-time simulation of adjustable two turbocharging engine, is carried for the research of engine control strategy
Basis is supplied.
The step of various methods divide above, be intended merely to describe it is clear, can be merged into when realizing a step or
Some steps are split, are decomposed into multiple steps, as long as including identical logical relation, all protection domain in this patent
It is interior;To either adding inessential modification in algorithm in flow or introducing inessential design, but its algorithm is not changed
Core design with flow is all in the protection domain of the patent.
Second embodiment of the invention is related to a kind of two turbocharging engine emulation platform, as shown in figure 3, including:
Host computer, real-time simulation machine, signal process box, controller, position sensor of valve and two-stage supercharger by-passing valve.Host computer
Real-time simulation machine is communicatively coupled to, for example, host computer can connect real-time simulation machine by high-speed local area network.Real-time simulation
Machine is communicated to connect with controller, and real-time simulation machine is connected with controller for example with CAN communication.Real-time simulation machine also passes through signal
Nurse one's health case connection controller.Wherein, signal process box and the I/O cards of real-time simulation machine connect, and signal process box is used for input
Output signal is correspondingly nursed one's health, such as signal is amplified or increases driving force etc..Two-stage supercharger by-passing valve
Connection controller and position sensor of valve, position sensor of valve are also connected with signal process box.Wherein, host computer is used to transport
Row simulink etc. modeling software, simulation model is built, and the operation of the real-time simulation software to RT-LAB etc. is managed.
Real-time simulation machine is used to run host computer based on the adjustable two-step supercharging as described in first embodiment or second embodiment
The Real-Time Model that engine mockup building method is built, real-time simulation machine are also responsible for and controller and actuator (such as valve
Door position sensor and two-stage supercharger by-passing valve) etc. between I/O communication and CAN communication, really may be used so as to simulate
Adjust the operation of two turbocharging engine.Controller be used for run adjustable two turbocharging engine control strategy or
The control strategy of two-stage turbocharger, the aperture that controller is additionally operable to control two-stage supercharger by-passing valve are arbitrarily downgraded with adjusting height
The energy distribution of turbine.Controller in present embodiment can be the ECU (Electronic of operation engine control strategy
Control Unit, electronic control unit, abbreviation ECU) or turbocharger controller.Position sensor of valve is used to detect two-stage
The aperture of supercharger bypass valve, and input to real-time simulation machine.
In present embodiment, real-time simulation machine uses RT-LAB emulation platforms.Because RT-LAB real-time simulation platforms can
Realize the real-time of nanosecond, it is possible to for subsequently with needing the motor combination of smaller step-length into imitative during hybrid power system
It is true that Real-time ensuring technology is provided.
Embodiment of the present invention provides hardware in terms of existing technologies, for adjustable two-step supercharging system engine and existed
Ring emulation platform, compared to turbocharged engine stand is built, substantial amounts of time and cost can be saved, on the other hand can also side
Just the characterisitic parameter of research object is changed, realizes that online adjust is joined, makes research range wider while the research and development time can be greatly shortened.
Present embodiment can make engine take into account the high-power of low-speed big and high speed, while can recover high primary to greatest extent
The power and response of motivation, improve vehicle and become height above sea level accommodation.
It is seen that present embodiment is the system embodiment corresponding with first embodiment, present embodiment can be with
First embodiment is worked in coordination implementation.The relevant technical details mentioned in first embodiment still have in the present embodiment
Effect, in order to reduce repetition, is repeated no more here.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in
In first embodiment.
It is noted that each module involved in present embodiment is logic module, and in actual applications, one
Individual logic unit can be a part for a physical location or a physical location, can also be with multiple physics lists
The combination of member is realized.In addition, in order to protrude the innovative part of the present invention, will not be with solving institute of the present invention in present embodiment
The unit that the technical problem relation of proposition is less close introduces, but this is not intended that in present embodiment and other lists are not present
Member.
It will be understood by those skilled in the art that the respective embodiments described above are to realize the specific embodiment of the present invention,
And in actual applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.
Claims (10)
- A kind of 1. adjustable two-step supercharging engine mockup building method, it is characterised in that including:Obtain the nonlinear multivariable differential equation group for characterizing adjustable two turbocharging engine;Nonlinear multivariable differential equation group decoupling is simplified and obtains the imitative in real time of the adjustable two turbocharging engine True mode.
- 2. adjustable two-step supercharging engine mockup building method according to claim 1, it is characterised in that the acquisition table The nonlinear multivariable differential equation group of adjustable two turbocharging engine is levied, is specifically included:Build the simulation model of natural aspiration h type engine h;The simulation model of two-stage turbocharger is built respectively;The simulation model of simulation model and two-stage turbocharger to the natural aspiration h type engine h carries out combined debugging, Obtain the simulation model based on nonlinear multivariable differential equation group of adjustable two turbocharging engine.
- 3. adjustable two-step supercharging engine mockup building method according to claim 2, it is characterised in thatIt is described obtain the simulation model based on nonlinear multivariable differential equation group of adjustable two turbocharging engine after, also Including:To starting in the simulation model based on nonlinear multivariable differential equation group of the adjustable two turbocharging engine Machine carries out the matching of two-stage turbocharger respectively.
- 4. adjustable two-step supercharging engine mockup building method according to claim 3, it is characterised in that described to institute The engine stated in the simulation model based on nonlinear multivariable differential equation group of adjustable two turbocharging engine enters respectively After the matching of row two-stage turbocharger, in addition to:If the engine after matching is consistent with the performance of target engine, the adjustable two-stage of the target engine is obtained The simulation model based on nonlinear multivariable differential equation group of turbocharged engine.
- 5. adjustable two-step supercharging engine mockup building method according to claim 2, it is characterised in that described to build certainly The simulation model of right air-breathing h type engine h, is specifically included:Using the simulation model of natural aspiration h type engine h described in circulation mean parameter model buildings.
- 6. adjustable two-step supercharging engine mockup building method according to claim 2, it is characterised in thatThe simulation model of the natural aspiration h type engine h includes:Throttle model, intake and exhaust pipeline model, row's temperature model, gas Cylinder model, IC engine dynamic model and engine resistance torque model.
- 7. adjustable two-step supercharging engine mockup building method according to claim 2, it is characterised in that described to take respectively The simulation model of two-stage turbocharger is built, is specifically included:The simulation model of the two-stage turbocharger is with the turbo charge system conservation of energy, gaseous mass conservation and turbine pressure Based on mechanism of qi rate equation, and combine the characteristic collection of illustrative plates modeling of turbine and compressor.
- 8. adjustable two-step supercharging engine mockup building method according to claim 2, it is characterised in thatThe simulation model of the two-stage turbocharger includes:Compressor by-passing valve model, hiigh pressure stage compressor model, low-pressure stage Compressor model, lower pressure stage turbocharger model, hiigh pressure stage turbocharger model and hiigh pressure stage turbine bypass valve model.
- 9. adjustable two-step supercharging engine mockup building method according to claim 1, it is characterised in that described to institute State nonlinear multivariable differential equation group decoupling simplify obtain the Real-Time Model of the adjustable two turbocharging engine after, Also include:Real time implementation is carried out to the Real-Time Model of the adjustable two turbocharging engine.
- A kind of 10. adjustable two-step supercharging engine emulation platform, it is characterised in that including:Host computer, real-time simulation machine, signal Nurse one's health case, controller, position sensor of valve and two-stage supercharger by-passing valve;The host computer is communicatively coupled to the real-time simulation machine, and the real-time simulation machine communicates to connect with the controller;The real-time simulation machine also connects the controller by the signal process box;The two-stage supercharger by-passing valve connects the controller and the position sensor of valve;The position sensor of valve is also connected with the signal process box;The real-time simulation machine is used to run the host computer based on adjustable two-stage as claimed in any one of claims 1-9 wherein The Real-Time Model that engine with supercharger model buildings method is built;The controller is used for the control for running the control strategy or two-stage turbocharger of adjustable two turbocharging engine System strategy, the controller are additionally operable to control the aperture of the two-stage supercharger by-passing valve and arbitrarily downgraded the energy of turbine with adjusting height Distribution;The position sensor of valve is used for the aperture for detecting the two-stage supercharger by-passing valve, and inputs to the real-time simulation Machine.
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CN113503262A (en) * | 2021-08-11 | 2021-10-15 | 北京理工大学 | Simulation method for high-low pressure turbine of two-stage supercharging system |
CN113530851A (en) * | 2021-08-11 | 2021-10-22 | 北京理工大学 | Simulation method for high-low pressure stage compressor of two-stage supercharging system |
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