CN104827881B - The matching process and device of bimodulus hybrid power vehicle double electric machine parameter - Google Patents
The matching process and device of bimodulus hybrid power vehicle double electric machine parameter Download PDFInfo
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Abstract
The present invention proposes a kind of matching process and device of bimodulus hybrid power vehicle double electric machine parameter; the matching process of the bimodulus hybrid power vehicle double electric machine parameter includes obtaining the first parameter; first parameter is the parameter of the first motor, and first parameter causes that vehicle meets default fuel economy requirement；The second parameter is obtained, second parameter is the parameter of the second motor, second parameter causes that vehicle meets default power performance requirement.The method can both ensure vehicle power performance in parameter matching process, and vehicle fuel economy is can ensure that again.
Description
Technical field
The present invention relates to field of automobile, more particularly to a kind of bimodulus hybrid power vehicle double electric machine parameter
Method of completing the square and device.
Background technology
All it is only formula by rule of thumb in the prior art for the determination of the parameter of electric machine in bimodulus hybrid vehicle.But,
Determination method based on empirical equation, only can ensure that vehicle power performance, consider less to vehicle fuel economy.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.
Therefore, it is an object of the present invention to propose a kind of match party of bimodulus hybrid power vehicle double electric machine parameter
Method, the method can both ensure vehicle power performance in parameter matching process, and vehicle fuel economy is can ensure that again.
It is another object of the present invention to propose a kind of coalignment of bimodulus hybrid power vehicle double electric machine parameter.
To reach above-mentioned purpose, the bimodulus hybrid power vehicle double electric machine parameter that first aspect present invention embodiment is proposed
Matching process, including：The first parameter is obtained, first parameter is the parameter of the first motor, and first parameter causes vehicle
Meet default fuel economy requirement；The second parameter is obtained, second parameter is the parameter of the second motor, second ginseng
Number causes that vehicle meets default power performance requirement.
The matching process of the bimodulus hybrid power vehicle double electric machine parameter that first aspect present invention embodiment is proposed, by obtaining
The first parameter and the second parameter are taken, and the first parameter considers fuel economy requirement, the second parameter considers power performance requirement, can
In parameter matching process, both to have ensured vehicle power performance, vehicle fuel economy is can ensure that again.
To reach above-mentioned purpose, the bimodulus hybrid power vehicle double electric machine parameter that second aspect present invention embodiment is proposed
Coalignment, including：First acquisition module, for obtaining the first parameter, first parameter is the parameter of the first motor, described
First parameter causes that vehicle meets default fuel economy requirement；Second acquisition module, for obtaining the second parameter, described
Two parameters are the parameters of the second motor, and second parameter causes that vehicle meets default power performance requirement.
The coalignment of the bimodulus hybrid power vehicle double electric machine parameter that second aspect present invention embodiment is proposed, by obtaining
The first parameter and the second parameter are taken, and the first parameter considers fuel economy requirement, the second parameter considers power performance requirement, can
In parameter matching process, both to have ensured vehicle power performance, vehicle fuel economy is can ensure that again.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
The above-mentioned and/or additional aspect of the present invention and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and be readily appreciated that, wherein：
Fig. 1 is that the flow of the matching process of the bimodulus hybrid power vehicle double electric machine parameter that one embodiment of the invention is proposed is shown
It is intended to；
Fig. 2 a are a kind of schematic diagrames of front axle when bi-motor is set in the embodiment of the present invention；
Fig. 2 b are a kind of schematic diagrames of rear axle when bi-motor is set in the embodiment of the present invention；
Fig. 3 a are the schematic diagrames of front axle when another bi-motor is set in the embodiment of the present invention；
Fig. 3 b are the schematic diagrames of rear axle when another bi-motor is set in the embodiment of the present invention；
Fig. 4 is the flow of the matching process of the bimodulus hybrid power vehicle double electric machine parameter that another embodiment of the present invention is proposed
Schematic diagram；
Fig. 5 is the schematic diagram of the universal indicatrix of engine in the embodiment of the present invention；
Fig. 6 is the schematic diagram of torque increase curve and moment of torsion drop amount curve in the embodiment of the present invention；
Fig. 7 is the driving torque curve of the first motor in the embodiment of the present invention and the schematic diagram of power generation torque curve；
Fig. 8 is the structure of the coalignment of the bimodulus hybrid power vehicle double electric machine parameter that another embodiment of the present invention is proposed
Schematic diagram；
Fig. 9 is the structure of the coalignment of the bimodulus hybrid power vehicle double electric machine parameter that another embodiment of the present invention is proposed
Schematic diagram.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar module or the module with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, is only used for explaining the present invention, and is not considered as limiting the invention.Conversely, this
Inventive embodiment includes all changes fallen into the range of the spiritual and intension of attached claims, modification and is equal to
Thing.
Fig. 1 is that the flow of the matching process of the bimodulus hybrid power vehicle double electric machine parameter that one embodiment of the invention is proposed is shown
It is intended to, the method includes：
S11：The first parameter is obtained, first parameter is the parameter of the first motor, first parameter causes that vehicle is expired
The default fuel economy requirement of foot.
S12：The second parameter is obtained, second parameter is the parameter of the second motor, second parameter causes that vehicle is expired
The default power performance requirement of foot.
Wherein, as shown in Figure 2 a, the first motor can be arranged on the front axle of automobile, accordingly, as shown in Figure 2 b, second
Motor is arranged on the rear axle of automobile.Or, as shown in Figure 3 a, the first motor and the second motor are all disposed within the front axle of automobile
On, accordingly, as shown in Figure 3 b, motor is not provided with the rear axle of automobile.
Specifically, the first parameter can meet following condition, to cause that vehicle meets default fuel economy requirement：
Under driving power-assisted and driving generating both of which so that engine works along optimal fuel economy curve；With
And, under power generation cascade pattern so that engine is operated in specific fuel consumption smallest point.
Specifically, the second parameter can meet following condition, to cause that vehicle meets default power performance requirement：
The peak parameters of the second parameter meet under hill start index, and pure electronic operating mode that max. speed and acceleration will
Ask.
Above-mentioned the first parameter and the second parameter can be according to upper in the case of engine and single-stage base ratio are given
State what principle was selected.
The present embodiment is by obtaining the first parameter and the second parameter, and the first parameter considers fuel economy requirement, second
Parameter considers power performance requirement, can both ensure vehicle power performance in parameter matching process, and vehicle fuel oil is can ensure that again
Economy.
Fig. 4 is the flow of the matching process of the bimodulus hybrid power vehicle double electric machine parameter that another embodiment of the present invention is proposed
Schematic diagram, the method includes：
S401：Determine demand power of the automobile under default operating mode；
For example, default operating mode is national standard city operating mode, the plug-in mixing with a certain kerb weight as 2000kg is moved
As a example by power SUV, demand power of the car under the operating mode of national standard city is 65kW.
S402：On universal characteristic curve of engine, external characteristic curve is determined, optimal fuel economy curve, minimum is turned round
Square curve, and the corresponding constant power curve of the demand power；
Universal characteristic curve of engine as shown in figure 5, including external characteristic curve 51, optimal fuel economy curve 52, most
Small torque curve 53,65kW constant powers curve 54.
S403：The envelope of the external characteristic curve and constant power curve composition is obtained, and obtains the envelope
With the torque difference between the optimal fuel economy curve, and moment of torsion is determined according to the corresponding relation of the difference and rotating speed
Incremental rate curve；
Referring to Fig. 5, envelope includes ABC curves.
Torque increase curve is as shown in the curve 61 of Fig. 6.
S404：Obtain the torque difference between the minimal torque curve and the optimal fuel economy curve, and root
Corresponding relation according to the difference and rotating speed determines moment of torsion drop amount curve；
Moment of torsion drop amount curve is as shown in the curve 62 of Fig. 6.
S405：According to engine specific fuel consumption it is minimum when corresponding moment of torsion and rotating speed, calculate magnitude of power during power generation cascade；
In the present embodiment, the magnitude of power during power generation cascade being calculated is that the corresponding magnitude of power of D points is 38.7kW.
S406：According to the torque increase curve, the moment of torsion drop amount curve, and the power number during power generation cascade
Value, determines the first parameter.
Wherein, the first parameter includes the driving torque under each rotating speed, the power generation torque under each rotating speed, power of motor and motor
Torque increase of the driving torque more than correspondence rotating speed in the torque increase curve under efficiency, and each rotating speed, under each rotating speed
, less than the moment of torsion drop amount of correspondence rotating speed in the moment of torsion drop amount curve, the power of motor is more than the power generation cascade for power generation torque
When magnitude of power, and the minimum place of peak and engine specific fuel consumption of the electric efficiency distance minimum.
Specifically, in order to pass through the effect of the first motor power-assisted, making engine work in optimal fuel economy curve, first
Driving torque under each rotating speed of motor should be greater than torque increase；In order to pass through generating effect of driving a vehicle, engine is set to work in most preferably
Fuel economy curve, the power generation torque under each rotating speed of the first motor should be less than moment of torsion drop amount；In order that starting during power generation cascade
Machine is operated in Best Economy operating point, and the first power of motor should be greater than magnitude of power during power generation cascade.
In order under the conditions of meeting three above, referring to Fig. 7, show the driving torque curve 71 and hair of the first Rated motor
Electric torque curve 72.
In addition, the motor for meeting three above condition is more, select electric efficiency and engine efficiency synchronism preferable
, used as the first motor, distance is nearer, show that synchronism is better at motor best efficiency point and engine specific fuel consumption minimum for motor.
The first parameter determination is realized by said process to complete.
S407：According to hill start index request, the peak torque of the second motor is determined；
Assuming that in the present embodiment, peak torque should be greater than 220Nm.
S408：Required according to max. speed under pure electronic operating mode, determine the maximum speed of the second motor；
Assuming that in the present embodiment, maximum speed should be greater than 11000rpm.
S409：Selection meets the motor of the peak torque and the maximum speed as the second electricity in existing motor
Machine；
The present embodiment, it is assumed that according to supplier resource, determines peak power 105kW, peak torque 230Nm, and highest
The motor of rotating speed 12000rpm is used as the second motor.
S410：Judge whether max. speed, acceleration time and max. climb slope requirement are met using the motor of selection, if
It is to perform S411, otherwise, performs S412.
For example, determining whether to meet performance requirement using simulation analysis using the second above-mentioned parameter.
In the present embodiment, by using the second above-mentioned parameter, using simulating analysis, vehicle under hybrid mode
Max. speed be more than 30%, pure electronic mould less than 9 seconds and max. climb slope more than 180km/h, 0~100km/h acceleration time
The max. speed of vehicle is less than 12 seconds more than 120km/h, 0~100km/h acceleration time and max. climb slope is more than 30% under formula,
By result of calculation as can be seen that vehicle performance meets requirement.
S411：The matching of second parameter is completed.
S412：Increase the peak power of the second motor according to preset ratio, step S410 and its follow-up is re-executed afterwards
Step.
For example, preset ratio is 5%, then the peak power of the second motor is increased by 5%.
The present embodiment by parameter matching process, both paying close attention to power index, when having considered operating mode again and having travelled
Fuel economy；By two parameters of electric machine of reasonable selection, power performance is met the requirements, and optimize vehicle in city work
Fuel consumption under condition.
Fig. 8 is the structure of the coalignment of the bimodulus hybrid power vehicle double electric machine parameter that another embodiment of the present invention is proposed
Schematic diagram, the device 80 includes the first acquisition module 81 and the second acquisition module 82.
First acquisition module 81, for obtaining the first parameter, first parameter is the parameter of the first motor, described first
Parameter causes that vehicle meets default fuel economy requirement；
First parameter meets following condition：
Under driving power-assisted and driving generating both of which so that engine works along optimal fuel economy curve；With
And, under power generation cascade pattern so that engine is operated in specific fuel consumption smallest point.
Second acquisition module 82, for obtaining the second parameter, second parameter is the parameter of the second motor, described second
Parameter causes that vehicle meets default power performance requirement.
Second parameter meets following condition：
The peak parameters of the second parameter meet under hill start index, and pure electronic operating mode that max. speed and acceleration will
Ask.
Wherein, as shown in Figure 2 a, the first motor can be arranged on the front axle of automobile, accordingly, as shown in Figure 2 b, second
Motor is arranged on the rear axle of automobile.Or, as shown in Figure 3 a, the first motor and the second motor are all disposed within the front axle of automobile
On, accordingly, as shown in Figure 3 b, motor is not provided with the rear axle of automobile.
Above-mentioned the first parameter and the second parameter can be according to upper in the case of engine and single-stage base ratio are given
State what principle was selected.
In another embodiment, referring to Fig. 9, first acquisition module 81 includes：
First module 811, for determining demand power of the automobile under default operating mode；
For example, default operating mode is national standard city operating mode, the plug-in mixing with a certain kerb weight as 2000kg is moved
As a example by power SUV, demand power of the car under the operating mode of national standard city is 65kW.
Second unit 812, in universal characteristic curve of engine, determining external characteristic curve, optimal fuel economy
The corresponding constant power curve of curve, minimal torque curve, and the demand power；
Universal characteristic curve of engine as shown in figure 5, including external characteristic curve 51, optimal fuel economy curve 52, most
Small torque curve 53,65kW constant powers curve 54.
3rd unit 813, for obtaining the envelope of the external characteristic curve and constant power curve composition, and obtains
Torque difference between the envelope and the optimal fuel economy curve, and according to difference pass corresponding with rotating speed
System determines torque increase curve；
Referring to Fig. 5, envelope includes ABC curves.
Torque increase curve is as shown in the curve 61 of Fig. 6.
4th unit 814, for obtaining the torsion between the minimal torque curve and the optimal fuel economy curve
Square difference, and moment of torsion drop amount curve is determined according to the corresponding relation of the difference and rotating speed；
Moment of torsion drop amount curve is as shown in the curve 62 of Fig. 6.
5th unit 815, for according to engine specific fuel consumption it is minimum when corresponding moment of torsion and rotating speed, when calculating power generation cascade
Magnitude of power；
In the present embodiment, the magnitude of power during power generation cascade being calculated is that the corresponding magnitude of power of D points is 38.7kW.
6th unit 816, for according to the torque increase curve, the moment of torsion drop amount curve, and the series connection hair
Magnitude of power when electric, determines the first parameter, wherein, the first parameter includes the driving torque under each rotating speed, the hair under each rotating speed
Driving torque under electric moment of torsion, power of motor and electric efficiency, and each rotating speed is more than correspondence rotating speed in the torque increase curve
Torque increase, power generation torque under each rotating speed less than correspondence rotating speed in the moment of torsion drop amount curve moment of torsion drop amount, the electricity
Magnitude of power when acc power is more than the power generation cascade, and the peak of the electric efficiency is minimum with engine specific fuel consumption
The distance at place is minimum.
Specifically, in order to pass through the effect of the first motor power-assisted, making engine work in optimal fuel economy curve, first
Driving torque under each rotating speed of motor should be greater than torque increase；In order to pass through generating effect of driving a vehicle, engine is set to work in most preferably
Fuel economy curve, the power generation torque under each rotating speed of the first motor should be less than moment of torsion drop amount；In order that starting during power generation cascade
Machine is operated in Best Economy operating point, and the first power of motor should be greater than magnitude of power during power generation cascade.
In order under the conditions of meeting three above, referring to Fig. 7, show the driving torque curve 71 and hair of the first Rated motor
Electric torque curve 72.
In addition, the motor for meeting three above condition is more, select electric efficiency and engine efficiency synchronism preferable
, used as the first motor, distance is nearer, show that synchronism is better at motor best efficiency point and engine specific fuel consumption minimum for motor.
The first parameter determination is realized by said process to complete.
In another embodiment, referring to Fig. 9, second acquisition module 82 includes：
7th unit 821, for according to hill start index request, determining the peak torque of the second motor；
Assuming that in the present embodiment, peak torque should be greater than 220Nm.
8th unit 822, for being required according to max. speed under pure electronic operating mode, determines the maximum speed of the second motor；
Assuming that in the present embodiment, maximum speed should be greater than 11000rpm.
9th unit 823, the electricity of the peak torque and the maximum speed is met for the selection in existing motor
Machine is used as the second motor；
The present embodiment, it is assumed that according to supplier resource, determines peak power 105kW, peak torque 230Nm, and highest
The motor of rotating speed 12000rpm is used as the second motor.
Whether tenth unit 824, judges meet max. speed using the motor of selection, and acceleration time and max. climb slope will
Ask；
For example, determining whether to meet performance requirement using simulation analysis using the second above-mentioned parameter.
In the present embodiment, by using the second above-mentioned parameter, using simulating analysis, vehicle under hybrid mode
Max. speed be more than 30%, pure electronic mould less than 9 seconds and max. climb slope more than 180km/h, 0~100km/h acceleration time
The max. speed of vehicle is less than 12 seconds more than 120km/h, 0~100km/h acceleration time and max. climb slope is more than 30% under formula,
By result of calculation as can be seen that vehicle performance meets requirement.
11st unit 825, for when being unsatisfactory for, the peak power and again of the second motor is increased according to preset ratio
Judge to be required until meeting, when satisfaction is required, the parameter determination of the motor that will be selected is the second parameter.
For example, preset ratio is 5%, then the peak power of the second motor is increased by 5%.
In the present embodiment, by using the second above-mentioned parameter, using simulating analysis, vehicle under hybrid mode
Max. speed be more than 30%, pure electronic mould less than 9 seconds and max. climb slope more than 180km/h, 0~100km/h acceleration time
The max. speed of vehicle is less than 12 seconds more than 120km/h, 0~100km/h acceleration time and max. climb slope is more than 30% under formula,
By result of calculation as can be seen that vehicle performance meets requirement.
The present embodiment is by obtaining the first parameter and the second parameter, and the first parameter considers fuel economy requirement, second
Parameter considers power performance requirement, can both ensure vehicle power performance in parameter matching process, and vehicle fuel oil is can ensure that again
Economy.
It should be noted that in the description of the invention, term " first ", " second " etc. are only used for describing purpose, without
It is understood that to indicate or implying relative importance.Additionally, in the description of the invention, unless otherwise indicated, the implication of " multiple "
It is two or more.
Any process described otherwise above or method description in flow chart or herein is construed as, and expression includes
It is one or more for realizing specific logical function or process the step of the module of code of executable instruction, fragment or portion
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discussion suitable
Sequence, including function involved by basis by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
It should be appreciated that each several part of the invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In implementation method, the software that multiple steps or method can in memory and by suitable instruction execution system be performed with storage
Or firmware is realized.If for example, realized with hardware, and in another embodiment, can be with well known in the art
Any one of row technology or their combination are realized：With the logic gates for realizing logic function to data-signal
Discrete logic, the application specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method is carried
The rapid hardware that can be by program to instruct correlation is completed, and described program can be stored in a kind of computer-readable storage medium
In matter, the program upon execution, including one or a combination set of the step of embodiment of the method.
Additionally, during each functional unit in each embodiment of the invention can be integrated in a processing module, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a module.Above-mentioned integrated mould
Block can both be realized in the form of hardware, it would however also be possible to employ the form of software function module is realized.The integrated module is such as
Fruit is to realize in the form of software function module and as independent production marketing or when using, it is also possible to which storage is in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.And, the specific features of description, structure, material or feature can be any
One or more embodiments or example in combine in an appropriate manner.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (6)
1. a kind of matching process of bimodulus hybrid power vehicle double electric machine parameter, it is characterised in that including：
The first parameter is obtained, first parameter is the parameter of the first motor, and it is default that first parameter causes that vehicle meets
Fuel economy requirement；
The second parameter is obtained, second parameter is the parameter of the second motor, and it is default that second parameter causes that vehicle meets
Power performance requirement；
Wherein, at least one in first parameter and second parameter is obtained using following corresponding manner：
The first parameter of the acquisition, including：
Determine demand power of the automobile under default operating mode；
On universal characteristic curve of engine, external characteristic curve is determined, optimal fuel economy curve, minimal torque curve, with
And the corresponding constant power curve of the demand power；
The envelope of the external characteristic curve and constant power curve composition is obtained, and it is optimal with described to obtain the envelope
Torque difference between fuel economy curve, and torque increase curve is determined according to the corresponding relation of the difference and rotating speed；
The torque difference between the minimal torque curve and the optimal fuel economy curve is obtained, and according to the difference
Determine moment of torsion drop amount curve with the corresponding relation of rotating speed；
According to engine specific fuel consumption it is minimum when corresponding moment of torsion and rotating speed, calculate magnitude of power during power generation cascade；
According to the torque increase curve, the moment of torsion drop amount curve, and the magnitude of power during power generation cascade determine
One parameter, wherein, the first parameter includes the driving torque under each rotating speed, the power generation torque under each rotating speed, power of motor and motor
Torque increase of the driving torque more than correspondence rotating speed in the torque increase curve under efficiency, and each rotating speed, under each rotating speed
, less than the moment of torsion drop amount of correspondence rotating speed in the moment of torsion drop amount curve, the power of motor is more than the power generation cascade for power generation torque
When magnitude of power, and the minimum place of peak and engine specific fuel consumption of the electric efficiency distance minimum；
The second parameter of the acquisition, including：
According to hill start index request, the peak torque of the second motor is determined；
Required according to max. speed under pure electronic operating mode, determine the maximum speed of the second motor；
Selection meets the motor of the peak torque and the maximum speed as the second motor in existing motor；
Judge whether max. speed, acceleration time and max. climb slope requirement are met using the motor of selection；
When being unsatisfactory for, increase the peak power of the second motor according to preset ratio and rejudge up to meeting requirement, full
When foot is required, the parameter determination of the motor that will be selected is the second parameter.
2. method according to claim 1, it is characterised in that first parameter meets following condition：
Under driving power-assisted and driving generating both of which so that engine works along optimal fuel economy curve；And, string
Under connection power generation mode so that engine is operated in specific fuel consumption smallest point.
3. method according to claim 1, it is characterised in that second parameter meets following condition：
The peak parameters of the second parameter meet max. speed and acceleration requirement under hill start index, and pure electronic operating mode.
4. a kind of coalignment of bimodulus hybrid power vehicle double electric machine parameter, it is characterised in that including：
First acquisition module, for obtaining the first parameter, first parameter is the parameter of the first motor, and first parameter makes
Obtain vehicle and meet default fuel economy requirement；
Second acquisition module, for obtaining the second parameter, second parameter is the parameter of the second motor, and second parameter makes
Obtain vehicle and meet default power performance requirement；
Wherein, at least one in first acquisition module and second acquisition module meets following corresponding conditionses：
First acquisition module includes：
First module, for determining demand power of the automobile under default operating mode；
Second unit, in universal characteristic curve of engine, determining external characteristic curve, optimal fuel economy curve, most
Small torque curve, and the corresponding constant power curve of the demand power；
Unit the 3rd, for obtaining the envelope of the external characteristic curve and constant power curve composition, and obtains the bag
Torque difference between winding thread and the optimal fuel economy curve, and determined according to the corresponding relation of the difference and rotating speed
Torque increase curve；
Unit the 4th, for obtaining the torque difference between the minimal torque curve and the optimal fuel economy curve,
And moment of torsion drop amount curve is determined according to the corresponding relation of the difference and rotating speed；
Unit the 5th, for according to engine specific fuel consumption it is minimum when corresponding moment of torsion and rotating speed, calculate power during power generation cascade
Numerical value；
Unit the 6th, for according to the torque increase curve, the moment of torsion drop amount curve, and the work(during power generation cascade
Rate score, determines the first parameter, wherein, the first parameter includes the driving torque under each rotating speed, the power generation torque under each rotating speed, electricity
Driving torque under acc power and electric efficiency, and each rotating speed increases more than the moment of torsion of correspondence rotating speed in the torque increase curve
Amount, moment of torsion drop amount of the power generation torque less than correspondence rotating speed in the moment of torsion drop amount curve under each rotating speed, the power of motor is big
Distance at magnitude of power when the power generation cascade, and peak and engine the specific fuel consumption minimum of the electric efficiency
It is minimum；
Second acquisition module includes：
Unit the 7th, for according to hill start index request, determining the peak torque of the second motor；
Unit the 8th, for being required according to max. speed under pure electronic operating mode, determines the maximum speed of the second motor；
Unit the 9th, the motor of the peak torque and the maximum speed is met as for the selection in existing motor
Two motors；
Whether Unit the tenth, judges meet max. speed, acceleration time and max. climb slope requirement using the motor of selection；
Unit the 11st, for when being unsatisfactory for, increasing the peak power of the second motor according to preset ratio and rejudging straight
Required to meeting, when satisfaction is required, the parameter determination of the motor that will be selected is the second parameter.
5. device according to claim 4, it is characterised in that first parameter meets following condition：
Under driving power-assisted and driving generating both of which so that engine works along optimal fuel economy curve；And, string
Under connection power generation mode so that engine is operated in specific fuel consumption smallest point.
6. device according to claim 4, it is characterised in that second parameter meets following condition：
The peak parameters of the second parameter meet max. speed and acceleration requirement under hill start index, and pure electronic operating mode.
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| CN104827881B true CN104827881B (en) | 2017-06-06 |
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| DE102018114782A1 (en) * | 2018-06-20 | 2019-12-24 | Schaeffler Technologies AG & Co. KG | Drive unit and drive arrangement |
| CN110155034B (en) * | 2019-05-31 | 2020-12-04 | 吉林大学 | Matching method for input distribution type hybrid power system planet row characteristic parameters |
| CN112389411A (en) * | 2020-11-20 | 2021-02-23 | 三一重型装备有限公司 | Hybrid vehicle engine control method, vehicle and readable storage medium |
| CN113022544B (en) * | 2021-04-29 | 2022-10-11 | 吉林大学 | Power split type hybrid power system and parameter matching method thereof |
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