CN112560161B - Method and device for determining influence degree of vehicle acceleration and upper computer - Google Patents
Method and device for determining influence degree of vehicle acceleration and upper computer Download PDFInfo
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Abstract
The invention provides a method and a device for determining the influence degree of vehicle acceleration and an upper computer. The method comprises the following steps: acquiring a corresponding relation between the change rate of an influence factor influencing the acceleration of the vehicle and the change rate of the acceleration time of the vehicle; and determining the influence degree of the influence factors according to the corresponding relation between the change rate of the influence factors and the acceleration time change rate. According to the technical scheme provided by the invention, the influence factors influencing the acceleration time of the vehicle are subjected to sensitivity analysis to obtain the weight of each influence factor influencing the acceleration time, so that the parts related to the influence factors can be purposefully optimized and designed by a person skilled in the art, the development time of the vehicle is greatly shortened, and the quality of the vehicle is ensured.
Description
Technical Field
The invention relates to the technical field of vehicle development, in particular to a method and a device for determining the acceleration influence degree of a vehicle and an upper computer.
Background
In the vehicle development process, the vehicle acceleration influence degree is an important index for influencing the vehicle development, and hundred kilometer acceleration time can reflect the power performance of a trolley. Specifically, the starting acceleration performance is mainly reflected in a concentrated manner; more specifically, the torque and horsepower of the engine, the efficiency of the transmission system, the weight of the vehicle, the grip of the tires, and the like. Currently, there are many factors affecting the acceleration performance of an electric vehicle, and the cause affecting the acceleration performance of the vehicle cannot be accurately analyzed and determined, which also results in an inability to effectively improve the acceleration performance of the vehicle.
Disclosure of Invention
The embodiment of the invention provides a method and a device for determining the acceleration influence degree of a vehicle and an upper computer, which are used for solving the problem that the acceleration performance of the vehicle cannot be effectively improved because the reason for influencing the acceleration performance of the vehicle cannot be accurately analyzed and determined.
In order to solve the above technical problems, an embodiment of the present invention provides a method for determining a degree of influence of acceleration of a vehicle, the method including:
Acquiring a corresponding relation between the change rate of an influence factor influencing the acceleration of the vehicle and the change rate of the acceleration time of the vehicle;
and determining the influence degree of the influence factors according to the corresponding relation between the change rate of the influence factors and the acceleration time change rate.
Further, acquiring a correspondence relationship between a change rate of an influence factor that affects acceleration of the vehicle and an acceleration time change rate of the vehicle, includes:
Acquiring influence factors influencing acceleration of a vehicle in a certain time period; the influencing factors include: at least one of a preparation quality, a tire rolling coefficient, a wind resistance coefficient, a speed reducer speed ratio and a speed reducer transmission efficiency;
Sequentially selecting each influence factor as a target influence factor, and simulating the target influence factors to obtain an acceleration time change rate corresponding to each target influence factor;
And obtaining the corresponding relation between the change rate of each target influence factor and the change rate of the acceleration time of the vehicle according to the target influence factors and the change rate of the acceleration time corresponding to each target influence factor.
Further, the target influencing factors are simulated to obtain the acceleration time change rate corresponding to each target influencing factor, and the method comprises the following steps:
When the influence factors comprise the quality of the preparation, according to the preset reference quality, obtaining the change rate of acceleration time of 0-100km/h when the quality is increased by a first preset value;
When the influence factors comprise tire rolling resistance coefficients, obtaining the change rate of acceleration time of 0-100km/h when the tire rolling resistance coefficients are increased by a second preset value according to the preset tire rolling resistance coefficients;
When the influence factors comprise wind resistance coefficients, according to the preset wind resistance coefficients, obtaining the change rate of acceleration time of 0-100km/h when the wind resistance coefficients are increased by a third preset value;
When the influence factors comprise the speed reducer speed ratio, according to the preset speed reducer speed ratio, obtaining the change rate of acceleration time of 0-100km/h when the speed reducer speed ratio is increased by a fourth preset value;
When the influencing factors comprise the transmission efficiency of the speed reducer, according to the preset transmission efficiency of the speed reducer, the change rate of acceleration time of 0-100km/h is obtained when the transmission efficiency of the speed reducer is increased by a fifth preset value.
Further, determining the influence degree of the influence factor according to the corresponding relation between the change rate of the influence factor and the acceleration time change rate includes:
According to the corresponding relation between the change rate of the influence factors and the acceleration time change rate, selecting actual optimized parts to assemble a target vehicle;
Carrying out simulation analysis on the target vehicle again, and determining the influence degree of the influence factors, wherein the influence degree of each influence factor on the acceleration time of 0-100km/h is ordered as follows: the preparation quality is equal to the speed reducer efficiency, the speed reducer speed ratio, the wind resistance coefficient and the rolling resistance coefficient.
The embodiment of the invention also provides a device for determining the acceleration influence degree of the vehicle, which comprises the following steps:
The first processing module is used for acquiring the corresponding relation between the change rate of the influence factors influencing the acceleration of the vehicle and the change rate of the acceleration time of the vehicle;
And the second processing module is used for determining the influence degree of the influence factors according to the corresponding relation between the change rate of the influence factors and the acceleration time change rate.
Further, the first processing module includes:
the first processing unit is used for acquiring influence factors which influence acceleration of the vehicle in a certain time period; the influencing factors include: at least one of a preparation quality, a tire rolling coefficient, a wind resistance coefficient, a speed reducer speed ratio and a speed reducer transmission efficiency;
The second processing unit is used for sequentially selecting each influence factor as a target influence factor, and simulating the target influence factors to obtain an acceleration time change rate corresponding to each target influence factor;
and the third processing unit is used for obtaining the corresponding relation between the change rate of each target influence factor and the acceleration time change rate of the vehicle according to the target influence factors and the acceleration time change rate corresponding to each target influence factor.
Further, when the influencing factors comprise the servicing quality, the second processing unit is used for obtaining the change rate of acceleration time of 0-100km/h when the quality is increased by a first preset value according to the preset reference quality;
When the influence factors comprise tire rolling resistance coefficients, the second processing unit is used for obtaining the change rate of acceleration time of 0-100km/h when the tire rolling resistance coefficients are increased by a second preset value according to preset tire rolling resistance coefficients;
when the influence factors comprise wind resistance coefficients, the second processing unit is used for obtaining the change rate of acceleration time of 0-100km/h when the wind resistance coefficients are increased by a third preset value according to the preset wind resistance coefficients;
When the influence factors comprise speed reducer speed ratios, the second processing unit is used for obtaining the change rate of acceleration time of 0-100km/h when the speed reducer speed ratio is increased by a fourth preset value according to the preset speed reducer speed ratio;
When the influencing factors comprise the transmission efficiency of the speed reducer, the second processing unit is used for obtaining the change rate of acceleration time of 0-100km/h when the transmission efficiency of the speed reducer is increased by a fifth preset value according to the preset transmission efficiency of the speed reducer.
Further, the second processing module is used for selecting actual optimized parts to assemble the target vehicle according to the corresponding relation between the change rate of the influence factors and the acceleration time change rate; carrying out simulation analysis on the target vehicle again, and determining the influence degree of the influence factors, wherein the influence degree of each influence factor on the acceleration time of 0-100km/h is ordered as follows: the preparation quality is equal to the speed reducer efficiency, the speed reducer speed ratio, the wind resistance coefficient and the rolling resistance coefficient.
The embodiment of the invention also provides an upper computer, which comprises: a processor, a memory and a computer program stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the vehicle acceleration influence determining method as described above.
The beneficial effects of the invention are as follows:
According to the embodiment of the invention, the influence factors (including wind resistance, rolling resistance and acceleration resistance) influencing the acceleration performance of the vehicle are analyzed, namely, the influence of different resistances on 0-100km/h acceleration time is respectively analyzed, further sensitivity analysis is performed, the corresponding relation between the change rate of the influence factors and the acceleration time change rate of the vehicle is obtained, the influence degree of each influence factor on the acceleration of the vehicle is obtained, the sequence of the influence on 0-100km/h acceleration time is determined, further optimization is performed, and the acceleration performance of the vehicle is effectively improved.
Drawings
FIG. 1 is a flow chart of a method for determining the degree of influence of acceleration of a vehicle according to an embodiment of the present invention;
FIG. 2 is a schematic general flow chart of a method for determining the degree of influence of acceleration of a vehicle according to an embodiment of the present invention;
fig. 3 is a diagram showing a correspondence between the change rate of the influence factor and the change rate of the acceleration time in the vehicle acceleration influence determining method of the embodiment of the invention;
fig. 4 is a schematic block diagram showing a method of determining a degree of influence of acceleration of a vehicle according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the drawings and the specific embodiments thereof in order to make the objects, technical solutions and advantages of the present invention more apparent. In the following description, specific details such as specific configurations and components are provided merely to facilitate a thorough understanding of embodiments of the invention. It will therefore be apparent to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
Aiming at the problem that the vehicle acceleration performance cannot be effectively improved due to the fact that the reason for influencing the vehicle acceleration performance cannot be accurately analyzed and determined, the embodiment of the invention provides a vehicle acceleration influence degree determining method and device and an upper computer.
As shown in fig. 1, an embodiment of the present invention provides a vehicle acceleration influence determining method, including:
step 100, obtaining the corresponding relation between the change rate of the influence factors influencing the acceleration of the vehicle and the change rate of the acceleration time of the vehicle;
and 200, determining the influence degree of the influence factors according to the corresponding relation between the change rate of the influence factors and the acceleration time change rate.
In the embodiment of the invention, as the influence degrees of different influence factors on the acceleration of the vehicle are different, firstly, the influence factors influencing the acceleration of the vehicle are determined, the corresponding relation between the change rate of the influence factors when changing according to the preset value and the change rate of the acceleration time of the vehicle is obtained, the influence degree of each influence factor on the acceleration of the vehicle is obtained according to the corresponding relation, the influence degree is expressed in the form of the weight of the influence acceleration time, the parts influencing the target design value are further optimized by combining with the preset target value of the vehicle, and the parts related to the influence factors can be purposefully designed and manufactured according to the size of the influence factors by a person skilled in the art.
In an alternative embodiment of the present invention, the step 100 may include:
Step 101, obtaining influence factors influencing acceleration of a vehicle in a certain time period; the influencing factors include: at least one of a preparation quality, a tire rolling coefficient, a wind resistance coefficient, a speed reducer speed ratio and a speed reducer transmission efficiency;
It should be noted that, as shown in fig. 2, in the method for determining the influence degree of vehicle acceleration according to the embodiment of the present invention, before obtaining the influence factor influencing the vehicle acceleration in a certain period of time, an acceleration target value of 0-100km is set for the test vehicle, and the whole vehicle resistance influencing the acceleration time of 0-100km is determined; and decomposing the whole vehicle resistance after acquiring the whole vehicle resistance of the test vehicle to obtain influence factors influencing the acceleration of the vehicle in a certain time period.
Step 102, sequentially selecting each influence factor as a target influence factor, and simulating the target influence factors to obtain an acceleration time change rate corresponding to each target influence factor;
optionally, step 102 may include:
Step 1021, when the influencing factors comprise the quality of the preparation, obtaining the change rate of acceleration time of 0-100km/h when the quality is increased by a first preset value according to the preset reference quality;
The first preset value may be 2% of the preset reference mass.
Step 1022, when the influencing factors include the tire rolling resistance coefficient, obtaining the change rate of the acceleration time of 0-100km/h when the tire rolling resistance coefficient is increased by a second preset value according to the preset tire rolling resistance coefficient;
the second preset value may be 2% of the preset tire rolling resistance coefficient.
Step 1023, when the influence factors comprise wind resistance coefficients, obtaining the change rate of acceleration time of 0-100km/h when the wind resistance coefficients are increased by a third preset value according to the preset wind resistance coefficients;
It should be noted that, the third preset value may be 2% of the preset windage coefficient.
Step 1024, when the influencing factors include the speed reducer speed ratio, obtaining the change rate of acceleration time of 0-100km/h when the speed reducer speed ratio is increased by a fourth preset value according to the preset speed reducer speed ratio;
it should be noted that, the fourth preset value may be 2% of the preset speed ratio of the speed reducer.
Step 1025, when the influencing factors include the transmission efficiency of the speed reducer, obtaining the change rate of the acceleration time of 0-100km/h when the transmission efficiency of the speed reducer is increased by a fifth preset value according to the preset transmission efficiency of the speed reducer.
It should be noted that, the fifth preset value may be 2% of the transmission efficiency of the preset speed reducer.
And step 103, obtaining a corresponding relation between the change rate of each target influence factor and the change rate of the acceleration time of the vehicle according to the target influence factors and the change rate of the acceleration time corresponding to each target influence factor.
In the embodiment of the invention, when the influence factors are subjected to simulation analysis, in order to ensure the accuracy during analysis and avoid the influence of other influence factors on an analysis result, each influence factor needs to be selected as a target influence factor in sequence; and increasing a preset value to the target influence factors during analysis, and respectively carrying out simulation to obtain the acceleration time corresponding to each target value, thereby obtaining the corresponding relation between the change rate of the target influence factors and the change rate of the acceleration time.
As shown in fig. 2, in the method for determining the acceleration influence of the vehicle according to the embodiment of the present invention, after obtaining the correspondence between the change rate of the target influence factor and the change rate of the acceleration time, a model selection matching analysis is required for the test vehicle, and a final verification is performed for the acceleration time of 0-100km for the test vehicle.
Optionally, according to the corresponding relation between the change rate of the influencing factors and the acceleration time change rate, selecting an actual optimized part to assemble the target vehicle.
As shown in fig. 3, in the method for determining the influence degree of vehicle acceleration according to the embodiment of the present invention, simulation analysis is performed again on the target vehicle to determine the influence degree of the influence factors, where the influence degree of each influence factor on the acceleration time of 0-100km/h is ordered as follows: the preparation quality is equal to the speed reducer efficiency, the speed reducer speed ratio, the wind resistance coefficient and the rolling resistance coefficient.
After simulation analysis and real vehicle verification, the person skilled in the art can reduce the sliding resistance of the whole vehicle by reducing the preparation quality, improving the efficiency of the speed reducer, optimizing the speed ratio of the speed reducer, reducing the wind resistance coefficient and reducing the rolling resistance coefficient, so that the acceleration time of 0-100km/h is optimized, and the quality of the vehicle is improved.
As shown in fig. 4, an embodiment of the present invention further provides a vehicle acceleration influence determining apparatus, including:
A first processing module 10, configured to obtain a correspondence relationship between a change rate of an influence factor that affects acceleration of the vehicle and an acceleration time change rate of the vehicle;
and the second processing module 20 is configured to determine an influence degree of the influence factor according to a correspondence between a change rate of the influence factor and the acceleration time change rate.
Optionally, the first processing module 10 includes:
the first processing unit is used for acquiring influence factors which influence acceleration of the vehicle in a certain time period; the influencing factors include: at least one of a preparation quality, a tire rolling coefficient, a wind resistance coefficient, a speed reducer speed ratio and a speed reducer transmission efficiency;
The second processing unit is used for sequentially selecting each influence factor as a target influence factor, and simulating the target influence factors to obtain an acceleration time change rate corresponding to each target influence factor;
and the third processing unit is used for obtaining the corresponding relation between the change rate of each target influence factor and the acceleration time change rate of the vehicle according to the target influence factors and the acceleration time change rate corresponding to each target influence factor.
Further, when the influencing factors comprise the servicing quality, the second processing unit is used for obtaining the change rate of acceleration time of 0-100km/h when the quality is increased by a first preset value according to the preset reference quality;
When the influence factors comprise tire rolling resistance coefficients, the second processing unit is used for obtaining the change rate of acceleration time of 0-100km/h when the tire rolling resistance coefficients are increased by a second preset value according to preset tire rolling resistance coefficients;
when the influence factors comprise wind resistance coefficients, the second processing unit is used for obtaining the change rate of acceleration time of 0-100km/h when the wind resistance coefficients are increased by a third preset value according to the preset wind resistance coefficients;
When the influence factors comprise speed reducer speed ratios, the second processing unit is used for obtaining the change rate of acceleration time of 0-100km/h when the speed reducer speed ratio is increased by a fourth preset value according to the preset speed reducer speed ratio;
When the influencing factors comprise the transmission efficiency of the speed reducer, the second processing unit is used for obtaining the change rate of acceleration time of 0-100km/h when the transmission efficiency of the speed reducer is increased by a fifth preset value according to the preset transmission efficiency of the speed reducer.
Further, the second processing module is used for selecting actual optimized parts to assemble the target vehicle according to the corresponding relation between the change rate of the influence factors and the acceleration time change rate; carrying out simulation analysis on the target vehicle again, and determining the influence degree of the influence factors, wherein the influence degree of each influence factor on the acceleration time of 0-100km/h is ordered as follows: the preparation quality is equal to the speed reducer efficiency, the speed reducer speed ratio, the wind resistance coefficient and the rolling resistance coefficient.
It should be noted that, the embodiment of the apparatus is an apparatus corresponding to the embodiment of the method, and all implementation manners in the embodiment of the method are applicable to the embodiment of the apparatus, so that the same technical effects can be achieved.
The embodiment of the invention also provides an upper computer, which comprises: a processor, a memory, and a computer program stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the vehicle acceleration influence determining method according to any one of the embodiments described above.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and changes can be made without departing from the principles of the present invention, and such modifications and changes are intended to be within the scope of the present invention.
Claims (3)
1.A vehicle acceleration influence determining method, characterized by comprising:
Acquiring a corresponding relation between the change rate of an influence factor influencing the acceleration of the vehicle and the change rate of the acceleration time of the vehicle;
determining the influence degree of the influence factors according to the corresponding relation between the change rate of the influence factors and the change rate of the acceleration time, obtaining the corresponding relation between the change rate of the influence factors when the preset value is changed and the change rate of the acceleration time of the vehicle, obtaining the influence degree of each influence factor on the acceleration of the vehicle according to the corresponding relation, expressing the influence degree in the form of the influence acceleration time weight, and optimizing the parts affecting the target design value by combining the preset target value of the vehicle; according to the size of the influencing factors, the parts related to the influencing factors are purposefully designed and manufactured;
Wherein, obtain the correspondence between the change rate of the influence factor that influences vehicle acceleration and acceleration time change rate of vehicle, include:
Acquiring influence factors influencing acceleration of a vehicle in a certain time period; the influencing factors include: at least one of a preparation quality, a tire rolling coefficient, a wind resistance coefficient, a speed reducer speed ratio and a speed reducer transmission efficiency;
Sequentially selecting each influence factor as a target influence factor, and simulating the target influence factors to obtain an acceleration time change rate corresponding to each target influence factor; when the influence factors comprise the quality of the preparation, according to the preset reference quality, obtaining a change rate of acceleration time of 0-100km/h when the quality is increased by a first preset value, wherein the first preset value is 2% of the preset reference quality; when the influence factors comprise tire rolling resistance coefficients, obtaining a change rate of acceleration time of 0-100km/h when the tire rolling resistance coefficients are increased by a second preset value according to the preset tire rolling resistance coefficients, wherein the second preset value is 2% of the preset tire rolling resistance coefficients; when the influence factors comprise wind resistance coefficients, obtaining a change rate of acceleration time of 0-100km/h when the wind resistance coefficients are increased by a third preset value according to the preset wind resistance coefficients, wherein the third preset value is 2% of the preset wind resistance coefficients; when the influence factors comprise speed reducer speed ratios, according to the preset speed reducer speed ratios, obtaining a change rate of acceleration time of 0-100km/h when the speed reducer speed ratio is increased by a fourth preset value, wherein the fourth preset value is 2% of the preset speed reducer speed ratio; when the influence factors comprise the transmission efficiency of the speed reducer, according to the preset transmission efficiency of the speed reducer, obtaining the change rate of acceleration time of 0-100km/h when the transmission efficiency of the speed reducer is increased by a fifth preset value, wherein the fifth preset value is 2% of the transmission efficiency of the speed reducer;
Obtaining a corresponding relation between the change rate of each target influence factor and the change rate of the acceleration time of the vehicle according to the target influence factors and the change rate of the acceleration time corresponding to each target influence factor;
Wherein determining the influence degree of the influence factor according to the corresponding relation between the change rate of the influence factor and the acceleration time change rate includes:
According to the corresponding relation between the change rate of the influence factors and the acceleration time change rate, selecting actual optimized parts to assemble a target vehicle;
Carrying out simulation analysis on the target vehicle again, and determining the influence degree of the influence factors, wherein the influence degree of each influence factor on the acceleration time of 0-100km/h is ordered as follows: the preparation quality is equal to the speed reducer efficiency, the speed reducer speed ratio, the wind resistance coefficient and the rolling resistance coefficient;
After simulation analysis and real vehicle verification, the whole vehicle sliding resistance is reduced by the methods of reducing the preparation quality, improving the efficiency of the speed reducer, optimizing the speed ratio of the speed reducer, reducing the wind resistance coefficient and reducing the rolling resistance coefficient, and the acceleration time of 0-100km/h is optimized.
2. A vehicle acceleration influence determining apparatus, characterized by comprising:
The first processing module is used for acquiring the corresponding relation between the change rate of the influence factors influencing the acceleration of the vehicle and the change rate of the acceleration time of the vehicle;
The second processing module is used for determining the influence degree of the influence factors according to the corresponding relation between the change rate of the influence factors and the change rate of the acceleration time, obtaining the corresponding relation between the change rate of the influence factors when the influence factors change according to a preset value and the change rate of the acceleration time of the vehicle, obtaining the influence degree of each influence factor on the acceleration of the vehicle according to the corresponding relation, expressing the influence degree in the form of the influence acceleration time weight, and optimizing the parts affecting the target design value by combining the preset target value of the vehicle; according to the size of the influencing factors, the parts related to the influencing factors are purposefully designed and manufactured;
The second processing module is used for selecting actual optimized parts to assemble a target vehicle according to the corresponding relation between the change rate of the influence factors and the acceleration time change rate; carrying out simulation analysis on the target vehicle again, and determining the influence degree of the influence factors, wherein the influence degree of each influence factor on the acceleration time of 0-100km/h is ordered as follows: the preparation quality is equal to the speed reducer efficiency, the speed reducer speed ratio, the wind resistance coefficient and the rolling resistance coefficient;
wherein the first processing module comprises:
the first processing unit is used for acquiring influence factors which influence acceleration of the vehicle in a certain time period; the influencing factors include: at least one of a preparation quality, a tire rolling coefficient, a wind resistance coefficient, a speed reducer speed ratio and a speed reducer transmission efficiency;
The second processing unit is used for sequentially selecting each influence factor as a target influence factor, and simulating the target influence factors to obtain an acceleration time change rate corresponding to each target influence factor; when the influence factors comprise the quality of the preparation, according to the preset reference quality, obtaining a change rate of acceleration time of 0-100km/h when the quality is increased by a first preset value, wherein the first preset value is 2% of the preset reference quality; when the influence factors comprise tire rolling resistance coefficients, obtaining a change rate of acceleration time of 0-100km/h when the tire rolling resistance coefficients are increased by a second preset value according to the preset tire rolling resistance coefficients, wherein the second preset value is 2% of the preset tire rolling resistance coefficients; when the influence factors comprise wind resistance coefficients, obtaining a change rate of acceleration time of 0-100km/h when the wind resistance coefficients are increased by a third preset value according to the preset wind resistance coefficients, wherein the third preset value is 2% of the preset wind resistance coefficients; when the influence factors comprise speed reducer speed ratios, according to the preset speed reducer speed ratios, obtaining a change rate of acceleration time of 0-100km/h when the speed reducer speed ratio is increased by a fourth preset value, wherein the fourth preset value is 2% of the preset speed reducer speed ratio; when the influence factors comprise the transmission efficiency of the speed reducer, according to the preset transmission efficiency of the speed reducer, obtaining the change rate of acceleration time of 0-100km/h when the transmission efficiency of the speed reducer is increased by a fifth preset value, wherein the fifth preset value is 2% of the transmission efficiency of the speed reducer;
The third processing unit is used for obtaining the corresponding relation between the change rate of each target influence factor and the change rate of the acceleration time of the vehicle according to the target influence factors and the change rate of the acceleration time corresponding to each target influence factor;
After simulation analysis and real vehicle verification, the whole vehicle sliding resistance is reduced by the methods of reducing the preparation quality, improving the efficiency of the speed reducer, optimizing the speed ratio of the speed reducer, reducing the wind resistance coefficient and reducing the rolling resistance coefficient, and the acceleration time of 0-100km/h is optimized.
3. An upper computer, characterized by comprising: a processor, a memory and a computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the vehicle acceleration influence determining method according to claim 1.
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| CN109684684A (en) * | 2018-12-07 | 2019-04-26 | 上海机电工程研究所 | Weapon Equipment System efficiency fast Optimization, system and medium |
| CN109684756A (en) * | 2018-12-28 | 2019-04-26 | 北京新能源汽车股份有限公司 | Vehicle energy consumption analysis method and device and upper computer |
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