CN113203578A - Vehicle thermal balance test method, device, equipment and storage medium - Google Patents
Vehicle thermal balance test method, device, equipment and storage medium Download PDFInfo
- Publication number
- CN113203578A CN113203578A CN202110456994.8A CN202110456994A CN113203578A CN 113203578 A CN113203578 A CN 113203578A CN 202110456994 A CN202110456994 A CN 202110456994A CN 113203578 A CN113203578 A CN 113203578A
- Authority
- CN
- China
- Prior art keywords
- vehicle
- thermal balance
- balance test
- preset
- tested
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention belongs to the technical field of vehicle heat balance, and discloses a vehicle heat balance test method, a device, equipment and a storage medium. The method comprises the following steps: acquiring vehicle parameter information, and determining the vehicle type of a vehicle to be tested according to the vehicle parameter information; acquiring a torque point slope table corresponding to the vehicle type according to the vehicle parameter information; and under a preset climbing scene, carrying out a thermal balance test on the vehicle to be tested according to the torque point slope table. Because the corresponding heat balance test is carried out according to the type of the vehicle, compared with the mode that the same heat balance test is adopted by all the existing vehicles, the mode of the invention sets reasonable heat balance test working conditions aiming at different vehicles, meets the requirement that the engine runs in a good working environment, avoids the waste of resources and improves the experience of users.
Description
Technical Field
The invention relates to the technical field of vehicle heat balance, in particular to a vehicle heat balance test method, a vehicle heat balance test device, vehicle heat balance test equipment and a storage medium.
Background
The heat balance performance of the automobile is one of important indexes of the automobile performance, and when the automobile has good heat balance capacity, the engine of the automobile has proper working temperature, so that the automobile can obtain better power, lower fuel consumption and meet the requirements of exhaust emission. When the thermal balance capability of the automobile is poor, the working temperature of the engine is increased, the torque of the engine is directly influenced, the power of the automobile is poor, the oil consumption is increased, the working performance is more obvious under the severe environment conditions of heavy load work, high temperature and the like of the automobile, even the coolant temperature is too high, the pan is opened or the engine is seriously knocked to damage the cylinder body of the engine, and then the air conditioner compressor is cut off by the automobile for ensuring the power output, so that the driving feeling of a user is directly influenced, and the complaint of the user is caused.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a vehicle thermal balance test method, a vehicle thermal balance test device, vehicle thermal balance test equipment and a storage medium, and aims to solve the technical problems of high development difficulty and high cost caused by a single test method in a vehicle thermal balance test in the prior art.
In order to achieve the above object, the present invention provides a vehicle thermal balance test method, comprising the steps of:
acquiring vehicle parameter information, and determining the vehicle type of a vehicle to be tested according to the vehicle parameter information;
acquiring a torque point slope table corresponding to the vehicle type according to the vehicle parameter information;
and under a preset climbing scene, carrying out a thermal balance test on the vehicle to be tested according to the torque point slope table.
Optionally, the step of performing a thermal balance test on the vehicle to be tested according to the torque point slope table in a preset climbing scene includes:
when the vehicle type is a first type vehicle, acquiring a power point slope table of the vehicle to be tested according to the vehicle parameter information;
acquiring a preset climbing gradient in the preset climbing scene;
and carrying out a thermal balance test according to the preset climbing gradient, the torque point gradient meter and the power point gradient meter.
Optionally, the step of performing a thermal balance test on the vehicle to be tested according to the torque point slope table in a preset climbing scene includes:
when the vehicle type is a second type vehicle, determining the highest vehicle speed of the vehicle to be tested according to the vehicle parameter information;
acquiring a preset climbing gradient in the preset climbing scene;
and carrying out a thermal balance test according to the preset climbing gradient, the torque point gradient meter and the maximum vehicle speed.
Optionally, the step of obtaining the power point slope table of the vehicle to be tested according to the vehicle parameter information includes:
determining the target power of the vehicle to be tested according to the parameter information;
determining the target speed of the vehicle to be tested according to the parameter information and the target power;
determining the driving force of the vehicle to be tested according to the parameter information and the target power;
obtaining a road resistance coefficient of the vehicle to be tested through a road sliding test, and determining road resistance according to the vehicle road resistance coefficient and the target vehicle speed;
and determining a power point slope table of the vehicle to be tested according to the driving force and the road resistance.
Optionally, the step of performing a thermal balance test according to the preset climbing gradient, the torque point gradient meter and the power point gradient meter includes:
carrying out a thermal balance test according to the preset climbing gradient and the torque point gradient table;
selecting a target gear from the power point gradient table according to a preset strategy according to the preset climbing gradient;
controlling the vehicle to be tested to run according to the target gear under a preset limit working condition, and acquiring a running speed;
and when the running speed is within a preset speed range, controlling the vehicle to be tested to perform a thermal balance test according to the target gear under a preset limit working condition.
Optionally, after the step of controlling the vehicle to be tested to run according to the target gear under the preset limit working condition and acquiring the running speed, the method further includes:
when the running vehicle speed is smaller than a first preset vehicle speed, determining an optimized gear according to the target gear, and controlling the vehicle to be tested to perform a thermal balance test according to the optimized gear under the limit working condition;
or when the running vehicle speed is greater than a second preset vehicle speed, controlling the vehicle to be tested to perform a thermal balance test according to the second preset vehicle speed under a preset limit working condition.
Optionally, the step of performing a thermal balance test according to the preset climbing gradient, the torque point gradient meter and the maximum vehicle speed includes:
determining a thermal balance test vehicle speed according to the highest vehicle speed, and carrying out a thermal balance test based on the thermal balance test vehicle speed;
and selecting a test gear from the torque point gradient table according to the preset climbing gradient and a preset strategy, and controlling the vehicle to be tested to perform a thermal balance test according to the test gear under a preset limit working condition.
In addition, to achieve the above object, the present invention also provides a vehicle thermal balance test apparatus, comprising:
the vehicle type determining module is used for acquiring vehicle parameter information and determining the vehicle type of the vehicle to be tested according to the vehicle parameter information;
the acquisition module is used for acquiring a torque point slope table corresponding to the vehicle type according to the vehicle parameter information;
and the test module is used for carrying out a thermal balance test on the vehicle to be tested according to the torque point slope table under a preset climbing scene.
In addition, to achieve the above object, the present invention also provides a vehicle thermal balance test apparatus, comprising: a memory, a processor, and a vehicle thermal balance test program stored on the memory and executable on the processor, the vehicle thermal balance test program configured to implement the steps of the vehicle thermal balance test method as described above.
In addition, to achieve the above object, the present invention further provides a storage medium having a vehicle thermal balance test program stored thereon, which when executed by a processor implements the steps of the vehicle thermal balance test method as described above.
According to the vehicle type testing method, the vehicle parameter information is obtained, and the vehicle type of the vehicle to be tested is determined according to the vehicle parameter information; acquiring a torque point slope table corresponding to the vehicle type according to the vehicle parameter information; and under a preset climbing scene, carrying out a thermal balance test on the vehicle to be tested according to the torque point slope table. Because the corresponding heat balance test is carried out according to the type of the vehicle, compared with the mode that the same heat balance test is adopted by all the existing vehicles, the mode of the invention sets reasonable heat balance test working conditions aiming at different vehicles, meets the requirement that the engine runs in a good working environment, avoids the waste of resources and improves the experience of users.
Drawings
FIG. 1 is a schematic structural diagram of a vehicle thermal balance testing device of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of a vehicle thermal balance test method of the present invention;
FIG. 3 is a schematic illustration of a calculated grade in the vehicle thermal balance test method of the present invention;
FIG. 4 is a schematic flow chart of a second embodiment of a vehicle thermal balance test method of the present invention;
FIG. 5 is a schematic flow chart of a third embodiment of a vehicle thermal balance test method of the present invention;
fig. 6 is a block diagram showing the structure of the first embodiment of the vehicle thermal balance testing apparatus according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle thermal balance testing apparatus in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the vehicle thermal balance test apparatus may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a WIreless interface (e.g., a WIreless-FIdelity (WI-FI) interface). The Memory 1005 may be a Random Access Memory (RAM) Memory, or may be a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in FIG. 1 does not constitute a limitation of the vehicle thermal balance test apparatus and may include more or fewer components than shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a storage medium, may include therein an operating system, a data storage module, a network communication module, a user interface module, and a vehicle thermal balance test program.
In the vehicle thermal balance test apparatus shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 of the vehicle thermal balance test apparatus according to the present invention may be provided in the vehicle thermal balance test apparatus, which calls the vehicle thermal balance test program stored in the memory 1005 through the processor 1001 and executes the vehicle thermal balance test method provided by the embodiment of the present invention.
Based on the vehicle thermal balance test equipment, the embodiment of the invention provides a vehicle thermal balance test method, and referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the vehicle thermal balance test method.
In this embodiment, the vehicle thermal balance test method includes the following steps:
step S10: and acquiring vehicle parameter information, and determining the vehicle type of the vehicle to be tested according to the vehicle parameter information.
It should be noted that the execution subject of the embodiment may be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device and a thermal balance testing device capable of implementing the above functions. The present example and each of the following examples will be described below by taking the thermal equilibrium test apparatus as an example.
It should be noted that the vehicle type may be the type of the vehicle to be tested, for example, a vehicle using diesel oil as a power source is a diesel engine type, and a vehicle using a gasoline engine or natural gas as a power source is a non-diesel engine type. The parameter information can be the service quality, the full load quality, the rotating speed corresponding to the maximum torque of the engine, the rotating speed corresponding to the rated power of the engine, the speed ratio of a gearbox, the final reduction ratio, the radius of a tire and other parameter information of the vehicle to be tested. For example, as shown in table 1 below, table 1 below is a vehicle-related parameter table, and the vehicle parameter information includes, but is not limited to, parameter information in the vehicle-related parameter table. Where the illustrated 100% overload road resistance coefficient may be a road resistance coefficient obtained through a road coasting test when the vehicle is 100% overloaded.
TABLE 1 vehicle-related parameters Table
Step S20: and acquiring a torque point slope table corresponding to the vehicle type according to the vehicle parameter information.
It should be noted that the torque point gradient table may be a corresponding relation table between a gradient and a shift that can be climbed when the vehicle to be tested runs at the maximum torque, for example, as shown in table 2 below, where table 2 is a torque point gradient table of a certain vehicle.
TABLE 2 Torque Point grade Table for certain vehicle
It should be noted that the torque point gradient tables of different vehicle types may be different, and the torque point gradient tables of different vehicles may also be different, and how to obtain the torque point gradient table corresponding to the vehicle type according to the vehicle parameter information is described below with reference to table 3, which is a calculation process of the torque point gradient table, as an example of a certain diesel engine vehicle.
TABLE 3 Torque Point ramp Meter calculation Process
It should be understood that, referring to table 3, obtaining the torque point slope table based on the vehicle parameter information may be obtaining a maximum torque of the vehicle based on the vehicle parameter information, determining a rotation speed range based on the maximum torque, determining a rotation speed n for calculating the torque point slope table based on the rotation speed range, and may be taking an intermediate value of the rotation speed range, for example, the maximum torque of the vehicle is 285N, the corresponding rotation speed range is 1800-2000r/min, the rotation speed N used for calculating the torque point slope table can be an intermediate value 1900r/min, the transmission speed ratio Si corresponding to the gear and the rolling radius r of the wheels of the vehicle are determined according to the vehicle parameter information, the final speed reduction ratio g of the vehicle is determined, the vehicle speed corresponding to the gear of the vehicle is calculated according to a formula V of 0.377N-r/Si/g in the table, wherein 0.377 is a fixed coefficient for calculating the vehicle speed of the vehicle, the embodiment is not elaborated herein, i represents the gear of the vehicle, for example, when i is equal to 1, the gradient which the vehicle can climb when the gear is 1 is calculated, and when the engine torque T of the vehicle and the transmission efficiency of each gear of the vehicle are calculated according to the engine torque T of the vehicle and the transmission efficiency of each gear of the vehicle
The gearbox speed ratio Si, the rolling radius r of the wheels of the vehicle and the final reduction ratio g of the vehicle, according to the formula in Table 3
Calculating the driving force of the vehicle in the gear, obtaining the road of the vehicle obtained according to the road coasting test, calculating the road resistance of the vehicle according to the formula of F0+ F1V + F2V in table 3, wherein F0, F1 and F2 are road resistance coefficients of the vehicle, and the climbing power of the vehicle is equal to the driving force minus the road resistance, referring to fig. 3, fig. 3 is a schematic diagram of the calculated gradient in the vehicle thermal balance test method of the present invention, and as can be seen from fig. 3, the climbing power of the vehicle is F, the sinusoidal Sin α mg/F climbing power of the gradient α that the vehicle can climb in the gear, and the corresponding climbable gradient of the vehicle in the gear can be obtained according to Sin α. And obtaining a torque point gradient table after calculating the corresponding climbable gradient of each gear of the vehicle.
Step S30: and under a preset climbing scene, carrying out a thermal balance test on the vehicle to be tested according to the torque point slope table.
It should be noted that the preset climbing scene may be a test scene set for performing a vehicle thermal balance test, such as an environment cabin hub environment, the thermal balance test of the vehicle may be completed by means of the preset climbing scene, a preset climbing slope is set in the preset climbing scene for performing the thermal balance test according to the preset climbing slope, the preset climbing slope may be a climbing slope that is manually set for performing the thermal balance test, the thermal balance test performed on the vehicle to be tested according to the torque point slope table may be a thermal balance test performed according to the preset climbing slope and the torque point slope table, specifically, a gear used for performing the thermal balance test is selected in the torque point slope table according to the preset climbing slope, and the vehicle is controlled to climb the uphill slope corresponding to the preset climbing slope under similar limit working conditions according to the selected gear, and detecting the climbing speed of the vehicle, and if the climbing speed of the vehicle is within the range of 30km/h-60km/h, performing a test according to the selected gear. And if the climbing speed of the vehicle is less than 30km/h, selecting a higher gear to perform a thermal balance test under the limit working condition, and if the climbing speed of the vehicle is more than 60km/h, performing the thermal balance test under the similar limit working condition without changing the gear at the vehicle speed of 60 km/h. And if the selected gear cannot be realized in the actual test process, reducing the first gear and selecting the gear and the working condition again according to the selection principle to perform the thermal balance test. Wherein, the above 30km/h-60km/h, 30km/h and 60km/h can be adjusted correspondingly according to actual needs.
It should be understood that, in the above thermal balance test, the limit condition may be a condition when the torque of the vehicle reaches the maximum torque, and the similar limit condition may be a condition when the vehicle is 100% overloaded, where the 100% overload may be a condition when the vehicle is fully loaded by subtracting a service mass of the vehicle from a full load mass of the vehicle, and 2 times the service mass plus the service mass of the vehicle is the mass when the vehicle is 100% overloaded, for example, the full load mass of the vehicle is 4690kg, the service mass of the vehicle is 3200kg, and the 100% overloaded mass of the vehicle is (4690-. The above-mentioned selecting the first higher gear may be selecting a first higher gear of the current gear for testing, for example, the current gear is 1, the first higher gear is 2, and the same principle applies to the first lower gear.
Further, in order to obtain a thermal balance test result of the vehicle, after the thermal balance test is performed on the vehicle to be tested according to the torque point slope table, the method further includes: and acquiring a first temperature and a second temperature, and judging whether the vehicle to be tested reaches thermal balance according to the first temperature and the second temperature.
It should be noted that the first temperature may be a temperature acquired by a sensor disposed at a water outlet of an engine of the vehicle to be tested or a water inlet of a radiator, the second temperature may be a temperature acquired by a sensor disposed at a preset distance in front of the vehicle to be tested, the preset distance may be other distances such as 1m and the like, the temperature is used for acquiring an ambient temperature around the vehicle to be tested, the first temperature is used to subtract the second temperature to obtain a cooling constant, when the cooling constant has no rising trend within 4 minutes continuously and changes within ± 1.0 ℃, it may be determined that the vehicle reaches a thermal equilibrium state, or when the cooling constant has a rising trend, but the rising trend is very slow, for example, when the change of the cooling constant within 5 minutes does not exceed 2.0 ℃, it may be determined that the vehicle reaches the thermal equilibrium state. Wherein, 4min, 5min, ± 1.0 deg.C and 2.0 deg.C can be determined according to actual conditions.
The method comprises the steps of determining the vehicle type of a vehicle to be tested according to vehicle parameter information by acquiring the vehicle parameter information; acquiring a torque point slope table corresponding to the vehicle type according to the vehicle parameter information; and under a preset climbing scene, carrying out a thermal balance test on the vehicle to be tested according to the torque point slope table. Because the corresponding heat balance test is carried out according to the type of the vehicle, compared with the mode that the same heat balance test is adopted by all the existing vehicles, the mode of the embodiment formulates the reasonable heat balance test working condition aiming at different vehicles, the requirement that the engine runs in a good working environment is met, the waste of resources is avoided, and the user experience is improved.
Referring to fig. 4, fig. 4 is a schematic flow chart of a vehicle thermal balance testing method according to a second embodiment of the present invention.
Based on the first embodiment described above, in the present embodiment, the step S30 includes:
step S301: and when the vehicle type is a first type vehicle, acquiring a power point slope table of the vehicle to be tested according to the vehicle parameter information.
It should be noted that the vehicle type may be the type of the vehicle to be tested, and in this embodiment, different thermal balance tests need to be performed according to the type of the vehicle, so that a vehicle using diesel oil as a power source is taken as a first type of vehicle, a vehicle using a gasoline engine or natural gas as a power source is taken as a second type of vehicle, and the power point slope table may be a corresponding relation table of a slope and a gear that can be climbed when the vehicle to be tested runs at rated power, for example, as shown in table 4 below, where table 4 is a power point slope table of a certain vehicle.
TABLE 4 Power Point grade Table for certain vehicle
It should be noted that the step of obtaining the power point slope table of the vehicle to be tested according to the vehicle parameter information includes: determining the target power of the vehicle to be tested according to the parameter information; determining the target speed of the vehicle to be tested according to the parameter information and the target power; determining the driving force of the vehicle to be tested according to the parameter information and the target power; obtaining a road resistance coefficient of the vehicle to be tested through a road sliding test, and determining road resistance according to the vehicle road resistance coefficient and the target vehicle speed; and determining a power point slope table of the vehicle to be tested according to the driving force and the road resistance.
It should be noted that the target power may be a credit power of the vehicle to be tested, and the target vehicle speed may be a vehicle speed of the vehicle to be tested in each gear, which is obtained through calculation, and even if the vehicle is a diesel engine, power point and gradient tables of different vehicles may be different, and how to obtain the power point and gradient table of the vehicle to be tested according to the vehicle parameter information is described with reference to a table 5, which is a calculation process of the power point and gradient table, as an example of a certain diesel engine vehicle.
TABLE 5-Power Point ramp Table calculation Process
It should be understood that, referring to table 5, the table for obtaining the power point gradient according to the vehicle parameter information may be that the maximum power of the vehicle is obtained according to the vehicle parameter information, the rotation speed is determined according to the maximum power, the torque of the engine is determined according to the rotation speed, for example, the maximum power P of a certain vehicle is 88kw, the corresponding rotation speed N is 3200r/min, the torque T of the engine is 262.59N m (torque T is power P9549/rotation speed N), which is a common formula for calculating the torque, and the embodiment is not additionally described herein, that the transmission speed ratio Si corresponding to the gear and the rolling radius r of the wheels of the vehicle are determined according to the vehicle parameter information, the final speed reduction ratio g of the vehicle is calculated according to the formula V0.377N r/Si/g in the table, wherein 0.377 is a fixed coefficient for calculating the vehicle speed of the vehicle, the embodiment will not be explained in more detail, i represents the gear of the vehicle, for example, when i is equal to 1, i represents the calculated gradient on which the vehicle can climb when the gear is 1, and the transmission efficiency of each gear of the vehicle is determined according to the engine torque T of the vehicle and the transmission efficiency of each gear of the vehicle
The gearbox speed ratio Si, the rolling radius r of the wheels of the vehicle and the final reduction ratio g of the vehicle, according to the formula in Table 5
Calculating the driving force of the vehicle in the gear, obtaining the road resistance of the vehicle obtained according to the road slide test, calculating the road resistance of the vehicle according to the formula F0+ F1V + F2V in Table 5, wherein F0, F1 and F2 are the road resistance coefficients of the vehicle obtained according to the road slide test, the climbing power of the vehicle is equal to the driving force minus the road resistance, and referring to FIG. 3, FIG. 3 is the vehicle of the inventionAs can be seen from fig. 3, when F represents the climbing driving force, the sinusoidal Sin α of the gradient α that the vehicle can climb in the gear is mg/F climbing power, and the corresponding climbing gradient in the gear can be obtained according to Sin α. And obtaining a power point gradient table after calculating the corresponding climbable gradient of each gear of the vehicle.
Step S302: and acquiring the preset climbing gradient in the preset climbing scene.
It should be noted that, predetermine the climbing scene and can be the experimental scene of setting for carrying out the vehicle heat balance test, can with the help of predetermine the climbing scene and accomplish the heat balance test of this vehicle, it is provided with the predetermined climbing slope under the climbing scene to predetermine for according to predetermine the climbing slope and carry out the heat balance test, predetermine the climbing slope and can be the artificial settlement, be used for carrying out the experimental climbing slope of heat balance.
Step S303: and carrying out a thermal balance test according to the preset climbing gradient, the torque point gradient meter and the power point gradient meter.
Further, in order to save the cost of the test, the step of performing the thermal balance test according to the preset climbing gradient, the torque point gradient meter and the power point gradient meter comprises: carrying out a thermal balance test according to the preset climbing gradient and the torque point gradient table; selecting a target gear from the power point gradient table according to a preset strategy according to the preset climbing gradient; controlling the vehicle to be tested to run according to the target gear under a preset limit working condition, and acquiring a running speed; and when the running speed is within a preset speed range, controlling the vehicle to be tested to perform a thermal balance test according to the target gear under a preset limit working condition.
It should be noted that, according to the preset climbing gradient and the specific step of the torque point gradient meter for the thermal balance test, reference may be made to the step in embodiment 1 described above, this embodiment is not described again here, the preset policy may be to select the highest gear in the power point gradient meter that can climb up the preset climbing gradient, for example, the preset climbing gradient is 8.7%, the height corresponding to 1 gear in the power point gradient meter is 25.6%, the height corresponding to 2 gear is 13.3%, the height corresponding to 3 gear is 8.5%, and the height corresponding to 4 gear is 4.0%, it is known that the highest gear that can climb up the preset climbing gradient is 8.7% is 2 gears, and then 2 gears are taken as the target gear. The preset limit condition may be a condition that the vehicle is 100% overloaded, where the 100% overload may be a loaded mass when the vehicle is fully loaded by subtracting a prepared mass of the vehicle from a fully loaded mass of the vehicle, and 2 times the loaded mass plus the prepared mass of the vehicle is the mass when the vehicle is 100% overloaded, for example, the fully loaded mass of the vehicle is 4690kg, the prepared mass of the vehicle is 3200kg, and the 100% overloaded mass of the vehicle is (4690 × 3200) — 2+3200 — 6180 kg. The preset vehicle speed range may be a test vehicle speed range set manually for performing a thermal balance test, and may be 30km/h to 60km/h, or other ranges, which is not limited herein.
Further, in order to ensure smooth performance of the thermal balance test, after the step of controlling the vehicle to be tested to run according to the target gear under the preset limit working condition and acquiring the running speed, the method further comprises the following steps: when the running vehicle speed is smaller than a first preset vehicle speed, determining an optimized gear according to the target gear, and controlling the vehicle to be tested to perform a thermal balance test according to the optimized gear under the limit working condition; or when the running vehicle speed is greater than a second preset vehicle speed, controlling the vehicle to be tested to perform a thermal balance test according to the second preset vehicle speed under a preset limit working condition.
It should be noted that the first preset vehicle speed may be a test vehicle speed range which is manually set and used for performing a thermal balance test, and may be 30km/h, or other ranges, the second preset vehicle speed may be a test vehicle speed range which is manually set and used for performing a thermal balance test, and may be 60km/h, or other ranges, and this embodiment is not limited herein, the optimized gear may be a first gear higher than the target gear, for example, the target gear is 2 gears, and the optimized gear is 3 gears, and the limit condition may be a working condition when the actual power of the vehicle reaches the maximum power.
In specific implementation, a gear for performing a thermal balance test is selected from the power point gradient table according to a preset climbing gradient, the vehicle is controlled to climb an uphill slope corresponding to the preset climbing gradient under similar limit working conditions according to the selected gear, the climbing speed of the vehicle is detected, and if the climbing speed of the vehicle is within the range of 30km/h-60km/h, the test is performed according to the selected gear. And if the climbing speed of the vehicle is less than 30km/h, selecting a higher gear to perform a thermal balance test under the limit working condition, and if the climbing speed of the vehicle is more than 60km/h, performing the thermal balance test under the similar limit working condition without changing the gear at the vehicle speed of 60 km/h. And if the selected gear cannot be realized in the actual test process, reducing the first gear and selecting the gear and the working condition again according to the selection principle to perform the thermal balance test.
In the embodiment, when the vehicle type is a first type vehicle, a power point slope table of the vehicle to be tested is obtained according to the vehicle parameter information; acquiring a preset climbing gradient in the preset climbing scene; and carrying out a thermal balance test according to the preset climbing gradient, the torque point gradient meter and the power point gradient meter. The first kind vehicle in this implementation is the vehicle of diesel engine type, and this embodiment formulates reasonable heat balance operating mode to the diesel engine specially and carries out the heat balance test, and adopts and test on the environment storehouse changes the hub, satisfies the engine promptly and moves in good operational environment, can satisfy user's multipurpose multiplex condition user demand again, can also save the cost, avoids the wasting of resources.
Referring to fig. 5, fig. 5 is a schematic flow chart of a vehicle thermal balance testing method according to a third embodiment of the invention.
Based on the foregoing embodiments, in this embodiment, after step S30, the method includes:
step S304: and when the vehicle type is a second vehicle, determining the highest vehicle speed of the vehicle to be tested according to the vehicle parameter information.
It should be noted that the vehicle type may be the type of the vehicle to be tested, and in this embodiment, different thermal balance tests need to be performed according to the type of the vehicle, so that a vehicle using diesel oil as a power source is used as a first type of vehicle, a vehicle using a gasoline engine or natural gas as a power source is used as a second type of vehicle, and this embodiment is a thermal balance test specifically describing the second type of vehicle, and the maximum vehicle speed is the maximum vehicle speed that the vehicle can reach and can be obtained by performing a test on an environmental chamber hub.
Step S305: and acquiring the preset climbing gradient in the preset climbing scene.
Step S306: and carrying out a thermal balance test according to the preset climbing gradient, the torque point gradient meter and the maximum vehicle speed.
Further, for making the heat balance test more reasonable, according to preset climbing slope, torque point slope table and the step of the highest speed of a motor vehicle carrying out the heat balance test, include: determining a thermal balance test vehicle speed according to the highest vehicle speed, and carrying out a thermal balance test based on the thermal balance test vehicle speed; and selecting a test gear from the torque point gradient table according to the preset climbing gradient and a preset strategy, and controlling the vehicle to be tested to perform a thermal balance test according to the test gear under a preset limit working condition.
It should be noted that, it can be said to predetermine the tactics to select in the torque point slope table and can climb up predetermine the highest fender position of climbing slope, for example, predetermine the climbing slope and be 8.7%, the height that 1 shelves correspond in the torque point slope table is 25.6%, the height that 2 shelves correspond is 13.3%, the height that 3 shelves correspond is 8.5%, the height that 4 shelves correspond is 4.0%, it can know, can climb up to predetermine the highest fender position that climbing slope is 8.7% and be 2 shelves, then regard 2 shelves as experimental gear. The specific steps of selecting a test gear from the torque point gradient table according to the preset climbing gradient and a preset strategy and controlling the vehicle to be tested to perform a thermal balance test according to the test gear under a preset limit working condition can refer to the embodiment, which is not described again,
it should be noted that the vehicle speed in the thermal balance test may be obtained by multiplying the maximum vehicle speed by a preset percentage, where the preset percentage may be set manually, and in this embodiment, 90% of the maximum vehicle speed is used as the vehicle speed in the thermal balance test. The thermal balance test based on the thermal balance test vehicle speed can be that the vehicle to be tested is controlled to perform the thermal balance test according to the thermal balance test vehicle speed under the 100% overload working condition.
In the embodiment, when the vehicle type is a second type vehicle, the highest vehicle speed of the vehicle to be tested is determined according to the vehicle parameter information; acquiring a preset climbing gradient in the preset climbing scene; and carrying out a thermal balance test according to the preset climbing gradient, the torque point gradient meter and the maximum vehicle speed. The second type vehicle in this implementation is the vehicle of gasoline engine or natural gas type, and the reasonable heat balance operating mode of vehicle formulation that this embodiment is directed against gasoline engine or natural gas type specially carries out the heat balance test, and adopts and test on the environmental chamber changes the hub, satisfies the engine promptly and moves in good operational environment, can satisfy user's multipurpose multiplex condition user demand again, can also save the cost, avoids the wasting of resources.
Referring to fig. 6, fig. 6 is a block diagram of a first embodiment of the vehicle thermal balance testing apparatus according to the present invention.
As shown in fig. 6, a vehicle thermal balance test apparatus according to an embodiment of the present invention includes:
the vehicle type determining module 10 is used for acquiring vehicle parameter information and determining the vehicle type of the vehicle to be tested according to the vehicle parameter information;
the obtaining module 20 is configured to obtain a torque point slope table corresponding to the vehicle type according to the vehicle parameter information;
and the test module 30 is used for performing a thermal balance test on the vehicle to be tested according to the torque point slope table in a preset climbing scene.
The method comprises the steps of determining the vehicle type of a vehicle to be tested according to vehicle parameter information by acquiring the vehicle parameter information; acquiring a torque point slope table corresponding to the vehicle type according to the vehicle parameter information; and under a preset climbing scene, carrying out a thermal balance test on the vehicle to be tested according to the torque point slope table. Because the corresponding heat balance test is carried out according to the type of the vehicle, compared with the mode that the same heat balance test is adopted by all the existing vehicles, the mode of the embodiment formulates the reasonable heat balance test working condition aiming at different vehicles, the requirement that the engine runs in a good working environment is met, the waste of resources is avoided, and the user experience is improved.
It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.
In addition, the technical details that are not described in detail in this embodiment may refer to the parameter operation method provided in any embodiment of the present invention, and are not described herein again.
A second embodiment of the vehicle thermal balance test apparatus of the present invention is proposed based on the first embodiment of the vehicle thermal balance test apparatus of the present invention.
In this embodiment, the testing module 30 is further configured to, when the vehicle type is a first type vehicle, obtain a power point slope table of the vehicle to be tested according to the vehicle parameter information; acquiring a preset climbing gradient in the preset climbing scene; and carrying out a thermal balance test according to the preset climbing gradient, the torque point gradient meter and the power point gradient meter.
Further, the test module 30 is further configured to determine the highest vehicle speed of the vehicle to be tested according to the vehicle parameter information when the vehicle type is a second type vehicle; acquiring a preset climbing gradient in the preset climbing scene; and carrying out a thermal balance test according to the preset climbing gradient, the torque point gradient meter and the maximum vehicle speed.
Further, the test module 30 is further configured to determine a target power of the vehicle to be tested according to the parameter information; determining the target speed of the vehicle to be tested according to the parameter information and the target power; determining the driving force of the vehicle to be tested according to the parameter information and the target power; obtaining a road resistance coefficient of the vehicle to be tested through a road sliding test, and determining road resistance according to the vehicle road resistance coefficient and the target vehicle speed; and determining a power point slope table of the vehicle to be tested according to the driving force and the road resistance.
Further, the test module 30 is further configured to perform a thermal balance test according to the preset climbing gradient and the torque point gradient table; selecting a target gear from the power point gradient table according to a preset strategy according to the preset climbing gradient; controlling the vehicle to be tested to run according to the target gear under a preset limit working condition, and acquiring a running speed; and when the running speed is within a preset speed range, controlling the vehicle to be tested to perform a thermal balance test according to the target gear under a preset limit working condition.
Further, the test module 30 is further configured to determine an optimized gear according to the target gear when the driving vehicle speed is less than a first preset vehicle speed, and control the vehicle to be tested to perform a thermal balance test according to the optimized gear under an extreme condition; or when the running vehicle speed is greater than a second preset vehicle speed, controlling the vehicle to be tested to perform a thermal balance test according to the second preset vehicle speed under a preset limit working condition.
Further, the test module 30 is further configured to determine a thermal balance test vehicle speed according to the highest vehicle speed, and perform a thermal balance test based on the thermal balance test vehicle speed; and selecting a test gear from the torque point gradient table according to the preset climbing gradient and a preset strategy, and controlling the vehicle to be tested to perform a thermal balance test according to the test gear under a preset limit working condition.
Other embodiments or specific implementation manners of the vehicle thermal balance test device of the invention can refer to the above method embodiments, and are not described herein again.
Furthermore, an embodiment of the present invention further provides a storage medium, on which a vehicle thermal balance test program is stored, and the vehicle thermal balance test program, when executed by a processor, implements the steps of the vehicle thermal balance test method as described above.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., a rom/ram, a magnetic disk, an optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A vehicle thermal balance test method, characterized in that the vehicle thermal balance test method comprises the steps of:
acquiring vehicle parameter information, and determining the vehicle type of a vehicle to be tested according to the vehicle parameter information;
acquiring a torque point slope table corresponding to the vehicle type according to the vehicle parameter information;
and under a preset climbing scene, carrying out a thermal balance test on the vehicle to be tested according to the torque point slope table.
2. The vehicle thermal balance test method according to claim 1, wherein the step of performing the thermal balance test on the vehicle to be tested according to the torque point slope table in the preset climbing scene comprises:
when the vehicle type is a first type vehicle, acquiring a power point slope table of the vehicle to be tested according to the vehicle parameter information;
acquiring a preset climbing gradient in the preset climbing scene;
and carrying out a thermal balance test according to the preset climbing gradient, the torque point gradient meter and the power point gradient meter.
3. The vehicle thermal balance test method according to claim 1, wherein the step of performing the thermal balance test on the vehicle to be tested according to the torque point slope table in the preset climbing scene comprises:
when the vehicle type is a second type vehicle, determining the highest vehicle speed of the vehicle to be tested according to the vehicle parameter information;
acquiring a preset climbing gradient in the preset climbing scene;
and carrying out a thermal balance test according to the preset climbing gradient, the torque point gradient meter and the maximum vehicle speed.
4. The vehicle thermal balance test method according to claim 2, wherein the step of obtaining the power point slope table of the vehicle to be tested according to the vehicle parameter information includes:
determining the target power of the vehicle to be tested according to the parameter information;
determining the target speed of the vehicle to be tested according to the parameter information and the target power;
determining the driving force of the vehicle to be tested according to the parameter information and the target power;
obtaining a road resistance coefficient of the vehicle to be tested through a road sliding test, and determining road resistance according to the vehicle road resistance coefficient and the target vehicle speed;
and determining a power point slope table of the vehicle to be tested according to the driving force and the road resistance.
5. The vehicle thermal balance test method according to claim 2, wherein the step of performing the thermal balance test according to the preset climbing gradient, the torque point gradient table, and the power point gradient table includes:
carrying out a thermal balance test according to the preset climbing gradient and the torque point gradient table;
selecting a target gear from the power point gradient table according to a preset strategy according to the preset climbing gradient;
controlling the vehicle to be tested to run according to the target gear under a preset limit working condition, and acquiring a running speed;
and when the running speed is within a preset speed range, controlling the vehicle to be tested to perform a thermal balance test according to the target gear under a preset limit working condition.
6. The vehicle thermal balance test method according to claim 5, wherein after the step of controlling the vehicle to be tested to run in the target gear under the preset limit condition and acquiring the running vehicle speed, the method further comprises the following steps:
when the running vehicle speed is smaller than a first preset vehicle speed, determining an optimized gear according to the target gear, and controlling the vehicle to be tested to perform a thermal balance test according to the optimized gear under the limit working condition;
or when the running vehicle speed is greater than a second preset vehicle speed, controlling the vehicle to be tested to perform a thermal balance test according to the second preset vehicle speed under a preset limit working condition.
7. A vehicle thermal balance test method according to claim 3, wherein said step of performing a thermal balance test based on said preset hill climb gradient, said torque point gradient table, and said maximum vehicle speed comprises:
determining a thermal balance test vehicle speed according to the highest vehicle speed, and carrying out a thermal balance test based on the thermal balance test vehicle speed;
and selecting a test gear from the torque point gradient table according to the preset climbing gradient and a preset strategy, and controlling the vehicle to be tested to perform a thermal balance test according to the test gear under a preset limit working condition.
8. A vehicle thermal balance test apparatus, comprising:
the vehicle type determining module is used for acquiring vehicle parameter information and determining the vehicle type of the vehicle to be tested according to the vehicle parameter information;
the acquisition module is used for acquiring a torque point slope table corresponding to the vehicle type according to the vehicle parameter information;
and the test module is used for carrying out a thermal balance test on the vehicle to be tested according to the torque point slope table under a preset climbing scene.
9. A vehicle thermal balance testing apparatus, comprising: a memory, a processor, and a vehicle thermal balance test program stored on the memory and executable on the processor, the vehicle thermal balance test program configured to implement the steps of the vehicle thermal balance test method of any one of claims 1 to 7.
10. A storage medium having stored thereon a vehicle thermal balance test program that, when executed by a processor, performs the steps of the vehicle thermal balance test method of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110456994.8A CN113203578B (en) | 2021-04-26 | 2021-04-26 | Vehicle thermal balance test method, device, equipment and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110456994.8A CN113203578B (en) | 2021-04-26 | 2021-04-26 | Vehicle thermal balance test method, device, equipment and storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113203578A true CN113203578A (en) | 2021-08-03 |
| CN113203578B CN113203578B (en) | 2022-06-21 |
Family
ID=77028867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110456994.8A Active CN113203578B (en) | 2021-04-26 | 2021-04-26 | Vehicle thermal balance test method, device, equipment and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113203578B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116061944A (en) * | 2022-12-26 | 2023-05-05 | 东风柳州汽车有限公司 | Gear determination method, equipment, storage medium and device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101738321A (en) * | 2008-11-05 | 2010-06-16 | 比亚迪股份有限公司 | Method for measuring maximum climbable gradient of vehicle |
| US20100268416A1 (en) * | 2009-04-21 | 2010-10-21 | Honda Motor Co., Ltd. | Vehicle gradient estimating device and vehicle traveling control device |
| KR101295837B1 (en) * | 2012-03-07 | 2013-08-12 | 한국에너지기술연구원 | Climbing test method of electric mopeds and motorcycles |
| CN104239641A (en) * | 2014-09-19 | 2014-12-24 | 安徽江淮汽车股份有限公司 | Matching method for battery electric vehicle power system |
| US20160082964A1 (en) * | 2014-09-23 | 2016-03-24 | Cummins Inc. | Vehicle controls including dynamic vehicle mass and road grade estimation during vehicle operation |
| CN109060368A (en) * | 2018-06-11 | 2018-12-21 | 江西江铃集团新能源汽车有限公司 | Electric vehicle cabin Thermal Balance Test method and system |
| CN109696312A (en) * | 2018-12-20 | 2019-04-30 | 潍柴动力股份有限公司 | Test device and test method for vehicle hill climbing test |
| CN110132614A (en) * | 2019-06-24 | 2019-08-16 | 哈尔滨东安汽车发动机制造有限公司 | The experimental rig and its method that a kind of automatic transmission influences vehicle thermal balance |
-
2021
- 2021-04-26 CN CN202110456994.8A patent/CN113203578B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101738321A (en) * | 2008-11-05 | 2010-06-16 | 比亚迪股份有限公司 | Method for measuring maximum climbable gradient of vehicle |
| US20100268416A1 (en) * | 2009-04-21 | 2010-10-21 | Honda Motor Co., Ltd. | Vehicle gradient estimating device and vehicle traveling control device |
| KR101295837B1 (en) * | 2012-03-07 | 2013-08-12 | 한국에너지기술연구원 | Climbing test method of electric mopeds and motorcycles |
| CN104239641A (en) * | 2014-09-19 | 2014-12-24 | 安徽江淮汽车股份有限公司 | Matching method for battery electric vehicle power system |
| US20160082964A1 (en) * | 2014-09-23 | 2016-03-24 | Cummins Inc. | Vehicle controls including dynamic vehicle mass and road grade estimation during vehicle operation |
| CN109060368A (en) * | 2018-06-11 | 2018-12-21 | 江西江铃集团新能源汽车有限公司 | Electric vehicle cabin Thermal Balance Test method and system |
| CN109696312A (en) * | 2018-12-20 | 2019-04-30 | 潍柴动力股份有限公司 | Test device and test method for vehicle hill climbing test |
| CN110132614A (en) * | 2019-06-24 | 2019-08-16 | 哈尔滨东安汽车发动机制造有限公司 | The experimental rig and its method that a kind of automatic transmission influences vehicle thermal balance |
Non-Patent Citations (4)
| Title |
|---|
| 卓斌: "《柴油机乘用车热平衡试验规范》", 30 June 2006 * |
| 国家市场监督管理局国家标准化管理委员会: "《汽车热平衡能力道路试验方法》", 29 September 2020 * |
| 崔启明等: "重型汽车整车热平衡台架试验方法研究", 《汽车技术》 * |
| 王敬等: "车辆传动系统热平衡计算与仿真研究", 《工程设计学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116061944A (en) * | 2022-12-26 | 2023-05-05 | 东风柳州汽车有限公司 | Gear determination method, equipment, storage medium and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113203578B (en) | 2022-06-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110843535B (en) | Vehicle power matching method, device, equipment and storage medium | |
| CN108549779B (en) | Performance simulation calculation method of hybrid electric vehicle, terminal device and storage medium | |
| Cuddy et al. | Analysis of the fuel economy benefit of drivetrain hybridization | |
| CN114258364A (en) | Method and device for determining required driving force of hybrid vehicle | |
| Filipi et al. | Engine-in-the-loop testing for evaluating hybrid propulsion concepts and transient emissions-HMMWV case study | |
| Gielniak et al. | Power management strategy based on game theory for fuel cell hybrid electric vehicles | |
| Lee et al. | Modeling and controls development of 48 V mild hybrid electric vehicles | |
| Kelly et al. | Benchmarking of OEM hybrid electric vehicles at NREL | |
| CN113665372B (en) | Vehicle battery power management method, apparatus and computer readable storage medium | |
| Varga et al. | Electric and plug-in hybrid vehicles | |
| CN113203578B (en) | Vehicle thermal balance test method, device, equipment and storage medium | |
| CN106476795A (en) | The engine control system of motor vehicle driven by mixed power and method | |
| CN118346767A (en) | Automatic gear adjusting method, system, equipment and computer readable storage medium | |
| CN117841963A (en) | Range extender working point determining method, range extender working point determining device, range extender working point determining equipment, range extender medium and automobile | |
| Rizzoni et al. | Hybrid and electrified vehicles | |
| CN115434817B (en) | Engine torque control method, device, electronic device and storage medium | |
| CN115782877B (en) | Vehicle creep control method, device, equipment and storage medium | |
| Morra et al. | Analysis of various operating strategies for a parallel-hybrid diesel powertrain with a belt alternator starter | |
| Rousseau et al. | Energy storage requirements for fuel cell vehicles | |
| CN113553663B (en) | Model selection method of motor system, terminal and readable storage medium | |
| CN113734145B (en) | Vehicle driving method and device and vehicle | |
| DiPierro et al. | An integrated methodology for 0d map-based powertrain modelling applied to a 48 V mild-hybrid diesel passenger car | |
| Jonasson | Control of hybrid electric vehicles with diesel engines | |
| Tsokolis et al. | Development of a Template Model and Simulation Approach for Quantifying the Effect of WLTP Introduction on Light Duty Vehicle CO 2 Emissions and Fuel Consumption | |
| Rousseau et al. | Trade-offs between fuel economy and NOx emissions using fuzzy logic control with a hybrid CVT configuration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |