Vehicle performance test method and device and readable storage medium

Abstract

The invention discloses a vehicle performance test method and device and a readable storage medium. The method relates to the field of vehicle testing, and comprises the steps that to-be-tested parameters and gear states of a to-be-tested vehicle are acquired, the to-be-tested parameters are used for evaluating performance parameters of the to-be-tested vehicle under dynamic response performance, and the gear states at least comprise a first gear state or a second gear state; the first gear state is used for indicating that the to-be-detected vehicle is in a gear state, and the second gear state is used for indicating that the to-be-detected vehicle is in a neutral gear state; based on the to-be-tested parameters and the gear state, to-be-tested data of the to-be-tested vehicle are determined, and the to-be-tested data are used for indicating the range of performance testing of the to-be-tested vehicle; according to the to-be-tested data, performance testing is conducted on the to-be-tested vehicle, a performance testing result is obtained, and the performance testing result is used for indicating the dynamic response performance of the to-be-tested vehicle. According to the invention, the problem that the vehicle performance test is not comprehensive is solved.

Description

Technical Field

[0001] The present application relates to the field of vehicle testing, and in particular, to a method and device for testing the performance of a vehicle and a readable storage medium. Background Technique

[0002] Currently, vehicle transient performance testing is an important means to evaluate the performance of a vehicle in aspects such as power output, acceleration, braking, and suspension. These tests can help vehicle manufacturers and designers understand the performance of the vehicle under different working conditions, so as to improve the safety, comfort, and performance of the vehicle. At the same time, enhancing the transient response of the engine is of great significance. It can improve the driving experience, make the vehicle accelerate more quickly and sensitively, and enhance the handling feel; it can also enhance the power performance, enable the engine to quickly respond to the driver's power demand, and provide better power output; improve maneuverability, in complex traffic conditions, faster response can increase the maneuverability of the vehicle; enhance safety, timely response can improve the vehicle's response ability, ensure driving safety, and make vehicle transient performance testing very important for evaluating the performance of the vehicle, improving the safety and comfort of the vehicle, and optimizing the design and tuning of the vehicle.

[0003] In the related art, in terms of transient test methods and processes, not all key driving conditions and environments are covered by the test, and the performance characteristics of the vehicle and the real road conditions are not fully considered, resulting in low rationality and accuracy of the test parameter design. At the same time, the analysis and comprehensive evaluation of the test data are insufficient, resulting in low comprehensiveness and accuracy of the test method. That is, some transient tests may have unreasonable test parameter design or insufficient consideration of the vehicle performance characteristics, resulting in inaccurate or unreliable test results. Therefore, there is a technical problem of incomplete vehicle performance testing.

[0004] In view of the technical problem of incomplete vehicle performance testing in the related art, no effective solution has been proposed yet. Summary of the Invention

[0005] The main purpose of the present application is to provide a method and device for testing the performance of a vehicle and a readable storage medium to solve the technical problem of incomplete vehicle performance testing in the related art.

[0006] According to one aspect of an embodiment of the present invention, a method for testing the performance of a vehicle is provided, including: obtaining the test parameters and gear states of the vehicle to be tested, where the test parameters are performance parameters for evaluating the dynamic response performance of the vehicle to be tested, and the gear states include at least a first gear state or a second gear state. The first gear state is used to indicate that the vehicle to be tested is in a gear state, and the second gear state is used to indicate that the vehicle to be tested is in a neutral gear state; based on the test parameters and the gear states, determining the test data of the vehicle to be tested, where the test data is used to indicate the range of performance testing of the vehicle to be tested; performing performance testing on the vehicle to be tested according to the test data to obtain a performance test result, where the performance test result is used to indicate the dynamic response performance of the vehicle to be tested.

[0007] Optionally, determining the test data of the vehicle to be tested based on the test parameters and the gear states includes: determining the first test data of the vehicle to be tested based on the test parameters and the first gear state; determining the second test data of the vehicle to be tested based on the test parameters and the second gear state; integrating the first test data and the second test data to obtain the test data.

[0008] Optionally, determining the first test data of the vehicle to be tested based on the test parameters and the first gear state includes: in response to the test parameter being a performance test parameter and the gear state of the vehicle to be tested being the first gear state, determining the test data as the first test data, where the first test data is used to indicate the engine performance data of the vehicle to be tested.

[0009] Optionally, determining the second test data of the vehicle to be tested based on the test parameters and the second gear state includes: in response to the test parameter being a mechanical test parameter and the gear state of the vehicle to be tested being the second gear state, determining the test data as the second test data, where the second test data is used to indicate the mechanical performance of the vehicle to be tested.

[0010] Optionally, performing performance testing on the vehicle to be tested according to the test data to obtain a performance test result includes: performing performance testing on the vehicle to be tested according to the test data to obtain multiple performance test parameters of the vehicle to be tested, where the test parameters are used to indicate the performance indicators of the vehicle to be tested under the test data; determining the performance test result based on the performance test parameters.

[0011] Optionally, determining the performance test result based on the performance test parameters includes: using a data processing model to integrate multiple performance test parameters to determine the performance test result, where the data processing model is a model preset for processing performance test parameters.

[0012] According to another aspect of the embodiments of the present invention, there is also provided a performance testing device for a vehicle. The device may include: an acquisition unit configured to acquire the parameters to be tested and the gear state of the vehicle to be tested, where the parameters to be tested are performance parameters for evaluating the dynamic response performance of the vehicle to be tested, and the gear state includes at least a first gear state or a second gear state, the first gear state is used to indicate that the vehicle to be tested is in gear, and the second gear state is used to indicate that the vehicle to be tested is in neutral; a determination unit configured to determine the data to be tested of the vehicle to be tested based on the parameters to be tested and the gear state, where the data to be tested is used to indicate the range of performance testing for the vehicle to be tested; a testing unit configured to perform performance testing on the vehicle to be tested according to the data to be tested, and obtain a performance test result, where the performance test result is used to indicate the dynamic response performance of the vehicle to be tested.

[0013] According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium. The computer-readable storage medium includes a stored program, where when the program is run by a processor, it controls the device where the storage medium is located to execute the performance testing method for a vehicle in the embodiments of the present invention.

[0014] According to another aspect of the embodiments of the present invention, there is also provided a processor. The processor is configured to run a program, where when the program runs, it executes the performance testing method for a vehicle in the embodiments of the present invention.

[0015] According to another aspect of the embodiments of the present invention, there is also provided a vehicle. The vehicle is configured to execute the performance testing method for a vehicle in the embodiments of the present invention.

[0016] In the embodiments of the present invention, the parameters to be tested and the gear state of the vehicle to be tested are acquired, where the parameters to be tested are performance parameters for evaluating the dynamic response performance of the vehicle to be tested, and the gear state includes at least a first gear state or a second gear state, the first gear state is used to indicate that the vehicle to be tested is in gear, and the second gear state is used to indicate that the vehicle to be tested is in neutral; the data to be tested of the vehicle to be tested is determined based on the parameters to be tested and the gear state, where the data to be tested is used to indicate the range of performance testing for the vehicle to be tested; performance testing is performed on the vehicle to be tested according to the data to be tested, and a performance test result is obtained, where the test result is used to indicate the dynamic response performance of the vehicle to be tested. In this application, the data to be tested is determined based on the parameters to be tested and the gear state of the vehicle to be tested, and thus performance testing is performed on the vehicle to be tested according to the data to be tested. Since this application fully considers the parameters to be tested and the gear state of the vehicle to be tested, it avoids the situation where the test parameter design is unreasonable or the vehicle performance characteristics are not fully considered, achieving the purpose of comprehensively considering the performance characteristics of the vehicle to be tested, thereby solving the technical problem of incomplete vehicle performance testing and realizing the technical effect of comprehensively performing performance testing on the vehicle. Description of the Drawings

[0017] The accompanying drawings described herein are used to provide a further understanding of the present invention and form a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0018] Figure 1 is a schematic diagram of a method for testing the performance of a vehicle according to an embodiment of the present invention;

[0019] Figure 2 is a flowchart of a method for testing the transient performance of a vehicle according to an embodiment of the present application;

[0020] Figure 3 is a schematic diagram of a transient performance test curve of a commercial vehicle according to an embodiment of the present application;

[0021] Figure 4 is a schematic diagram of a device for testing the performance of a vehicle according to an embodiment of the present invention. Detailed Embodiments

[0022] In order to enable those skilled in the art of the present technology to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0023] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned accompanying drawings are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order different from those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0024] According to an embodiment of the present invention, an embodiment of a method for testing the performance of a vehicle is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that here.

[0025] Figure 1 It is a schematic diagram of a performance test method for a vehicle according to an embodiment of the present invention. As Figure 1 shown, the method includes the following steps:

[0026] Step S101, obtain the test parameters and gear state of the vehicle to be tested.

[0027] In the technical solution provided in step S101 of the present invention above, the test parameters are performance parameters for evaluating the vehicle to be tested under dynamic response performance. The gear state includes at least a first gear state or a second gear state. The first gear state is used to indicate that the vehicle to be tested is in the in-gear state, and the second gear state is used to indicate that the vehicle to be tested is in the neutral state. Herein, the vehicle to be tested can also be referred to as a vehicle.

[0028] In this embodiment, the test parameters and gear state of the vehicle to be tested are obtained. For example, the test parameters and gear state of the vehicle to be tested are obtained by using a vehicle diagnostic tool or a dedicated test device. This is only an exemplary example here and does not limit the specific method for obtaining the test parameters and gear state of the vehicle to be tested.

[0029] For example, by obtaining the test requirements pre-input by the user, the test parameters of the vehicle to be tested are determined.

[0030] Optionally, the test parameters can be the engine water temperature, oil temperature, intake and exhaust pressure, cooling fan speed, throttle position measured by the Controller Area Network (CAN) bus, actual engine torque, friction torque, instantaneous fuel consumption, etc.; the gear state can be the in-gear state and the neutral state. This is only an exemplary example here and does not limit the specific content of the test parameters and gear state.

[0031] Optionally, obtaining the test parameters and gear state of the vehicle to be tested can ensure the accuracy of the test process and avoid inaccurate test results caused by parameter mismatch or incorrect gear. At the same time, by recording the test parameters and gear state of the vehicle to be tested, the repeatability of the test process can be ensured, making the test results more credible.

[0032] Step S102, determine the test data of the vehicle to be tested based on the test parameters and gear state.

[0033] In the technical solution provided in step S102 of the present invention above, the test data is used to indicate the range of performance test for the vehicle to be tested. Herein, the test data can also be referred to as a measurement point.

[0034] In this embodiment, according to the test parameters to be tested and the gear state obtained in step S101, the test data of the vehicle to be tested is determined. For example, when the gear state of the vehicle to be tested is in-gear state, the test data to be determined can be the vehicle drive power and the engine speed. This is only an exemplary example and does not limit the specific method of determining the test data of the vehicle to be tested according to the test parameters to be tested and the gear state.

[0035] For example, when the test parameter to be tested of the vehicle is a mechanical type of test parameter and the gear state is in neutral state, the test data to be determined is the mechanical system friction power. That is, when the vehicle to be tested is in neutral state, it is necessary to test the power consumed by the chassis dynamometer to drive the vehicle driveline. After the power at the measurement point is stable, that is, the change range of the power value is within ±0.5 (1% of the measured value) kW.

[0036] For another example, when the test parameter to be tested of the vehicle to be tested is a performance test parameter and the gear state is in-gear state, the test data to be determined is the vehicle drive power and the engine speed. That is, when measuring the vehicle drive power, when the vehicle to be tested is in in-gear state, it is necessary to test the power absorbed by the chassis dynamometer when the engine to be tested is working. Among them, the engine speed points should be the whole-hundred speed points within the range from the idle speed to the rated speed, and include the idle speed and the rated speed.

[0037] Optionally, determining the test data of the vehicle to be tested according to the test parameters to be tested and the gear state can ensure that the test requirements of the vehicle are comprehensively considered, so as to achieve the purpose of comprehensively testing the performance of the vehicle.

[0038] Step S103, perform a performance test on the vehicle to be tested according to the test data to be tested, and obtain a performance test result.

[0039] In the technical solution provided in step S103 of the present invention above, the performance test result is used to indicate the dynamic response performance of the vehicle to be tested.

[0040] In this embodiment, after the test data of the vehicle to be tested determined in step S102, perform a performance test on the vehicle to be tested according to the test data to be tested, and obtain a performance test result. For example, collect the tested performance test parameters according to each measurement point, and integrate multiple performance test parameters to obtain a performance test result. This is only an exemplary example and does not limit the specific method of obtaining the performance test result.

[0041] Optionally, according to the performance test result, it can help to discover possible problems or defects of the vehicle, repair them in time, and improve the safety and reliability of the vehicle.

[0042] It should be noted that the above embodiment can be executed by a vehicle performance test device.

[0043] In this embodiment, the to-be-tested parameters and gear states of the vehicle to be tested are obtained. The to-be-tested parameters are performance parameters for evaluating the vehicle to be tested under dynamic response performance. The gear states at least include a first gear state or a second gear state. The first gear state is used to indicate that the vehicle to be tested is in the in-gear state, and the second gear state is used to indicate that the vehicle to be tested is in the neutral state. Based on the to-be-tested parameters and gear states, the to-be-tested data of the vehicle to be tested is determined, where the to-be-tested data is used to indicate the range of performance testing for the vehicle to be tested. According to the to-be-tested data, performance testing is performed on the vehicle to be tested to obtain a performance test result, where the test result is used to indicate the dynamic response performance of the vehicle to be tested. In this application, the to-be-tested data is determined according to the to-be-tested parameters and gear states of the vehicle to be tested, and thus performance testing is performed on the vehicle to be tested according to the to-be-tested data. Since this application fully considers the to-be-tested parameters and gear states of the vehicle to be tested, it avoids the situation of unreasonable or insufficient consideration of vehicle performance characteristics in test parameter design, achieves the purpose of comprehensively considering the performance characteristics of the vehicle to be tested, thereby solving the technical problem of incomplete vehicle performance testing and realizing the technical effect of comprehensively performing performance testing on the vehicle.

[0044] The above method of this embodiment will be further introduced below.

[0045] As an optional embodiment, step S102, determining the to-be-tested data of the vehicle to be tested based on the to-be-tested parameters and gear states, includes: determining the first to-be-tested data of the vehicle to be tested based on the to-be-tested parameters and the first gear state; determining the second to-be-tested data of the vehicle to be tested based on the to-be-tested parameters and the second gear state; and integrating the first to-be-tested data and the second to-be-tested data to obtain the to-be-tested data.

[0046] In this embodiment, the first to-be-tested data and the second to-be-tested data of the vehicle to be tested are determined according to the to-be-tested parameters and gear states. That is, the first to-be-tested data of the vehicle to be tested is determined according to the to-be-tested parameters and the first gear state, where the first gear state may be the in-gear state, and the first to-be-tested data may at least include: the total vehicle drive power and the engine speed.

[0047] Optionally, the second to-be-tested data of the vehicle to be tested is determined according to the to-be-tested parameters and the second gear state, where the second gear state may be the neutral state, and the second to-be-tested data may at least include: the mechanical system friction power.

[0048] Optionally, after determining the first data to be tested and the second data to be tested, integrate the first data to be tested and the second data to be tested to obtain the data to be tested. For example, integrate the first data to be tested and the second data to be tested through a preset calculation formula to obtain the data to be tested. This is only an exemplary example here and does not limit the specific method of obtaining the data to be tested.

[0049] Optionally, according to the parameter to be tested and the gear state, determine the first data to be tested and the second data to be tested of the vehicle to be tested; integrate the first data to be tested and the second data to be tested to obtain the data to be tested, which can cover the test requirements under different gear states and ensure comprehensive testing. The integrated data to be tested can more comprehensively verify the performance and stability of the vehicle under different gear states, help discover potential problems and improve the test efficiency. The integrated data can also better simulate the actual driving scenario and improve the authenticity and reliability of the test.

[0050] As an optional embodiment, based on the parameter to be tested and the first gear state, determine the first data to be tested of the vehicle to be tested, including: in response to the parameter to be tested being a performance test parameter and the gear state of the vehicle to be tested being the first gear state, determine the data to be tested as the first data to be tested, where the first data to be tested is used to indicate the engine performance data of the vehicle to be tested.

[0051] In this embodiment, when the parameter to be tested is a performance test parameter and the gear state of the vehicle to be tested is the first gear state, the data to be tested can be determined as the first data to be tested, where the first gear state can be the in-gear state, and the performance test parameters can include but are not limited to: CAN bus measured throttle position, actual engine torque, friction torque, instantaneous fuel consumption, etc.

[0052] Optionally, by testing the performance data under different gear states, the performance of the vehicle under different working conditions can be more accurately understood, providing more reliable performance data references for manufacturers and users. At the same time, early detection and resolution of potential performance problems help improve the reliability and durability of the vehicle and ensure the safety and performance stability of the vehicle during use.

[0053] As an optional embodiment, based on the parameter to be tested and the second gear state, determine the second data to be tested of the vehicle to be tested, including: in response to the parameter to be tested being a mechanical test parameter and the gear state of the vehicle to be tested being the second gear state, determine the data to be tested as the second data to be tested, where the second data to be tested is used to indicate the mechanical performance of the vehicle to be tested.

[0054] Optionally, when the parameter to be tested is a mechanical test parameter and the gear state of the vehicle to be tested is the second gear state, the data to be tested can be determined as the second data to be tested, where the second gear state can be the neutral gear state, and the mechanical test parameter can include, but is not limited to: engine water temperature, oil temperature, intake and exhaust pressure, cooling fan speed, etc.

[0055] Optionally, in vehicle performance testing, by separately testing the engine performance and mechanical performance, the overall performance of the vehicle can be more comprehensively evaluated. Engine performance data can help determine the power output of the vehicle under different working conditions, including indicators such as acceleration performance and fuel efficiency, while mechanical performance data can evaluate the performance of the vehicle's suspension, steering, braking and other systems, so as to understand the stability and safety of the vehicle during driving.

[0056] As an optional embodiment, in step S103, perform a performance test on the vehicle to be tested according to the data to be tested to obtain a performance test result, including: perform a performance test on the vehicle to be tested according to the data to be tested to obtain multiple performance test parameters of the vehicle to be tested, where the test parameters are used to indicate the performance indicators of the vehicle to be tested under the data to be tested; determine the performance test result based on the performance test parameters.

[0057] In this embodiment, perform a performance test on the vehicle to be tested according to the data to be tested to obtain multiple performance test parameters of the vehicle to be tested. For example, conduct tests at specified measurement points. The engine throttle opening and speed are both tested from low to high. During the test process, quickly press the throttle to the full open position and collect the performance test data, that is, the performance test parameters, at different measurement points. This is only an exemplary example and does not limit the specific method for obtaining multiple performance test parameters of the vehicle to be tested.

[0058] Optionally, after obtaining multiple performance test parameters of the vehicle to be tested, determine the performance test result according to the multiple performance test parameters. The specific test method is as follows.

[0059] Optionally, the performance test result can help vehicle manufacturers discover potential safety hazards, make improvements in a timely manner, and improve the safety performance of the vehicle.

[0060] As an optional embodiment, determine the performance test result based on the performance test parameters, including: use a data processing model to integrate multiple performance test parameters to determine the performance test result, where the data processing model is a pre-set model for processing performance test parameters.

[0061] In this embodiment, use a data processing model to integrate multiple performance test parameters to determine the performance test result, where the data processing model can be a pre-set calculation formula.

[0062] For example, the power consumption of the engine is calculated according to the following formulas (1) and (2), and the time required for the vehicle under test to reach the engine's external characteristic torque from the moment the accelerator is depressed is the transient response time of the vehicle. That is, the following formulas (1) and (2) are used to integrate multiple performance test parameters to determine the performance test results of the vehicle under test:

[0063] P ED =P VD +P MD (1)

[0064] Te = 9549 * P ED / n e (2)

[0065] Wherein, P ED represents the power consumption of the engine, with the unit of kW, P VD represents the driving power of the whole vehicle, with the unit of kW, P MD represents the frictional power of the mechanical system, with the unit of kW; Te represents the engine torque, with the unit of N·m, and n e represents the engine speed, with the unit of r / min.

[0066] Optionally, through a pre-set data processing model, multiple performance test parameters can be effectively integrated, improving the data processing efficiency and saving time and resources.

[0067] Optionally, after obtaining the performance test results, output the performance test results. For example, plot the performance test results as a curve or generate a report.

[0068] Optionally, through the report or curve plotting, users can conduct in-depth analysis of the performance test results, identify the performance bottlenecks and problems in the system, and provide a reference for subsequent optimization.

[0069] It should be noted that the above embodiments can be executed by a performance test device of the vehicle.

[0070] The performance testing method for a vehicle provided by an embodiment of the present application obtains the parameters to be tested and the gear state of the vehicle to be tested. Among them, the parameters to be tested are performance parameters used to evaluate the dynamic response performance of the vehicle to be tested, and the gear state includes at least a first gear state or a second gear state. The first gear state is used to indicate that the vehicle to be tested is in the engaged state, and the second gear state is used to indicate that the vehicle to be tested is in the neutral state; based on the parameters to be tested and the gear state, the data to be tested for the vehicle to be tested is determined. Among them, the data to be tested is used to indicate the range for performing performance testing on the vehicle to be tested; according to the data to be tested, performance testing is performed on the vehicle to be tested to obtain a performance test result. Among them, the test result is used to indicate the dynamic response performance of the vehicle to be tested. According to the parameters to be tested and the gear state of the vehicle to be tested, the present application determines the data to be tested, and thus performs performance testing on the vehicle to be tested according to the data to be tested. Since the present application fully considers the parameters to be tested and the gear state of the vehicle to be tested, it avoids the situation where the test parameter design is unreasonable or the vehicle performance characteristics are not fully considered, achieves the purpose of comprehensively considering the performance characteristics of the vehicle to be tested, and thus solves the technical problem of incomplete vehicle performance testing and realizes the technical effect of comprehensively performing performance testing on the vehicle.

[0071] The technical solutions of the embodiments of the present invention will be illustrated below in conjunction with preferred embodiments.

[0072] Currently, vehicle transient performance testing is an important means to evaluate the performance of vehicles in aspects such as power output, acceleration, braking, and suspension. These tests can help vehicle manufacturers and designers understand the performance of vehicles under different working conditions, so as to improve the safety, comfort, and performance of vehicles. At the same time, enhancing the engine's transient response is of great significance. It can improve the driving experience, make the vehicle accelerate more quickly and sensitively, and enhance the handling feeling; it can also enhance the power performance, enable the engine to quickly respond to the driver's power demand, and provide a better power output; it can improve the mobility, and in complex traffic conditions, a faster response can increase the vehicle's mobility; it can enhance the safety, and a timely response can improve the vehicle's response ability and ensure driving safety. Therefore, vehicle transient performance testing is very important for evaluating the performance of vehicles, improving the safety and comfort of vehicles, and optimizing the design and tuning of vehicles.

[0073] In the related art, some transient tests may have the situation where the test parameter design is unreasonable or the vehicle performance characteristics are not fully considered, resulting in inaccurate or unreliable test results. Therefore, there is a technical problem of incomplete vehicle performance testing.

[0074] To solve these problems, it is necessary to improve the transient test methods and processes, ensure that the tests cover all key driving conditions and environments, fully consider the vehicle performance characteristics and real road conditions at the same time, improve the rationality and accuracy of test parameter design, strengthen test data analysis and comprehensive evaluation, and ensure the comprehensiveness and accuracy of the test methods.

[0075] However, the embodiments of the present invention propose a vehicle transient performance test method, which is the relationship between the performance indicators (power, torque) of a commercial vehicle engine and the throttle under the whole vehicle's operating state. Measure the driving power of the whole vehicle. When the transmission is in gear, measure the power absorbed by the chassis dynamometer when the engine is working. Measure the friction power of the whole vehicle, which is the power consumed by the chassis dynamometer to drive the vehicle powertrain when the transmission is in neutral, so as to achieve the purpose of comprehensively testing the transient performance of the vehicle and solving the technical problem of incomplete testing of the vehicle's transient performance.

[0076] The following further introduces the embodiments of the present invention.

[0077] Figure 2 It is a flowchart of a vehicle transient performance test method provided according to an embodiment of the present application. The vehicle transient performance test method includes the following steps:

[0078] Step S201, confirm the vehicle state.

[0079] In this embodiment, conduct a vehicle inspection to determine the vehicle state. Set the chassis dynamometer in the road resistance simulation state for preheating the vehicle, set the road driving resistance according to the rated load of the test vehicle, and let the vehicle continuously drive at 80% of its maximum speed for 30 km.

[0080] Optionally, setting the chassis dynamometer in the road resistance simulation state is to simulate the road resistance encountered by the vehicle during actual driving for performance testing and parameter calibration. Preheating the chassis dynamometer can provide more accurate and reliable test results and ensure that the vehicle can operate normally and perform well under various road conditions.

[0081] Optionally, the rated load refers to the maximum weight that the vehicle can carry, and the rated load needs to be determined according to the design parameters of the vehicle.

[0082] Optionally, the friction coefficients of different road surfaces are different, which will affect the resistance of the vehicle during driving. Therefore, it is necessary to set the resistance according to the actual road surface conditions.

[0083] Optionally, the vehicle is affected by air resistance during driving, and it is necessary to consider the vehicle's aerodynamic parameters for resistance setting.

[0084] Optionally, the speed at which the vehicle travels affects the magnitude of the resistance, and the resistance needs to be set according to the designed speed of the vehicle.

[0085] Optionally, different types of vehicle power systems also have different effects on the resistance, and the characteristics of the vehicle power system need to be considered for resistance setting.

[0086] Step S202, test preparation.

[0087] In this embodiment, test preparation is carried out to determine measurement points, etc. Within the engine operating speed range, more than 10 measurement points are appropriately distributed (the engine speed points should be whole-hundred speed points within the range from idle speed to rated speed, and include idle speed and rated speed).

[0088] For example, the measurement points corresponding to the idle speed can be set as: 800 revolutions per minute, 1000 revolutions per minute, 1200 revolutions per minute, 1400 revolutions per minute, 1600 revolutions per minute, 1800 revolutions per minute, 2000 revolutions per minute, 2200 revolutions per minute, 2400 revolutions per minute. This is only an exemplary example and does not limit the specific content of the measurement points corresponding to the idle speed.

[0089] For another example, the rated speed can be set as 2600 revolutions per minute, 2800 revolutions per minute, 3000 revolutions per minute, etc. This is only an exemplary example and does not limit the specific content of the measurement points corresponding to the rated speed.

[0090] Step S203, test the vehicle to obtain test results.

[0091] In this embodiment, under the constant-speed mode of the chassis dynamometer, the test is carried out according to the specified measurement points. The engine throttle opening and speed are both tested from low to high, and the throttle needs to be quickly pushed to the full open position during the test process.

[0092] Optionally, when conducting the test under the constant-speed mode of the chassis dynamometer, the test needs to be carried out according to the specified measurement points. First, ensure that the chassis dynamometer has been set to the constant-speed mode and the speed has stabilized at the set value. Then, fix the object to be tested on the chassis and ensure its correct position. Next, according to the test requirements, measurements are taken at the specified measurement points, relevant data are recorded and analyzed. Throughout the test process, ensure standard operation and comply with safety operation procedures to ensure the accuracy and reliability of the test results.

[0093] Optionally, the vehicle's overall drive power and engine speed are tested in the in-gear state.

[0094] Optionally, testing the overall vehicle drive power in gear usually refers to evaluating the vehicle's performance by measuring the power generated during vehicle operation. Such tests generally use professional test equipment to measure parameters such as vehicle speed, acceleration, and resistance, and then calculate the overall vehicle drive power.

[0095] Optionally, the engine speed refers to the rotational speed of the engine during operation, usually expressed in revolutions per minute (rpm). Engine speed is an important indicator for measuring the operating state and performance of the engine, and is of great significance for evaluating aspects such as the engine's working condition, combustion efficiency, and output power.

[0096] Optionally, testing the overall vehicle drive power and engine speed in gear can help evaluate the vehicle's power performance and engine working condition, providing important data references for vehicle performance optimization and adjustment.

[0097] Optionally, test the mechanical system friction power of the vehicle when it is in neutral.

[0098] Optionally, when the vehicle is in neutral, the friction power of the mechanical system depends on the rolling resistance of the vehicle and the friction losses in the transmission system. Rolling resistance includes the friction between the tires and the ground, bearing friction, and air resistance, etc., while the friction losses in the transmission system include the friction between components such as the transmission, drive shaft, and differential.

[0099] Optionally, to test the mechanical system friction power of the vehicle when it is in neutral, it can be calculated by measuring the power required when the vehicle is stationary. This can be achieved by measuring the engine power output when the vehicle is parked. By subtracting the engine output power and other system power losses, the mechanical system friction power can be obtained.

[0100] Optionally, the mechanical system friction power can also be tested by conducting a rolling test when the vehicle is in neutral. By measuring the rolling resistance of the vehicle on a flat road surface and the friction losses in the transmission system, the mechanical system friction power can be calculated.

[0101] Optionally, after the power at each measurement point stabilizes, that is, the change range of the power value is within ±0.5 (1% of the measured value) kW. Then data acquisition is carried out, and the sampling time is not less than 20 s. This is only an exemplary example and does not limit the specific range of the sampling time.

[0102] Optionally, during the data acquisition process, it is necessary to ensure that the power at the measurement point is stable within the set range to ensure the accuracy and reliability of the acquired data. A sampling time of not less than 20 seconds can ensure sufficient data points for analysis and processing. After the data acquisition is completed, the acquired data needs to be processed and analyzed to evaluate and optimize the system.

[0103] Optionally, other characteristic parameters such as engine water temperature, oil temperature, intake and exhaust pressure, cooling fan speed, CAN bus measured throttle position, engine actual torque, friction torque, and instantaneous fuel consumption are measured according to the test requirements.

[0104] Optionally, the engine operating power is calculated according to the aforementioned formulas (1) and (2), and a transient response curve is plotted. The time required from when the throttle is depressed until the engine reaches the external characteristic torque is calculated as the vehicle transient response time.

[0105] Optionally, Figure 3 is a schematic diagram of a transient performance test curve of a commercial vehicle provided according to an embodiment of the present application. As Figure 3 shown, it can be determined that the throttle pedal opening of the vehicle to be tested is 100%, and the engine torque is 2000 - 2500 N·m.

[0106] Optionally, the present invention solves the test problem of the vehicle engine transient response time through the test processes and methods of the throttle and torque at different engine speeds.

[0107] Optionally, the present invention solves the problem of testing the external characteristic power and torque of the vehicle engine through the test processes and methods of the drive power and friction power of the whole vehicle.

[0108] Step S204, output the test result.

[0109] In this embodiment, the data obtained from the test in step S203 is processed, curves are plotted, reports are compiled, etc.

[0110] For example, it can be carried out according to the following steps: Data cleaning: Check whether there are missing values or outliers in the data and process them. Data analysis: Conduct statistical analysis on the data, such as calculating the mean, standard deviation, correlation coefficient, etc. Data visualization: Use software to plot curve graphs, scatter plots, etc. to visually display the relationships between data. Report compilation: Compile a report based on the data analysis results, interpret it, summarize the experimental results, and draw conclusions. The report can include content such as the experimental purpose, method, results, analysis, and conclusions, facilitating users to understand the experimental process and results. At the same time, the significance of the data and possible application scenarios can be further discussed as needed.

[0111] Optionally, the present invention solves the problems of the driver's power demand and the evaluation of engine response by plotting the curve of the throttle and torque relationship.

[0112] In this embodiment, under the vehicle use state, the relationship between the performance indicators (power, torque) of the commercial vehicle engine and the throttle is measured. The vehicle drive power is measured, and when the transmission is in gear, the power absorbed by the chassis dynamometer when the engine is working is measured. The vehicle friction power is measured, and when the transmission is in neutral, the power consumed by the chassis dynamometer to drive the vehicle driveline is measured, so as to achieve the purpose of comprehensively testing the transient performance of the vehicle and solve the technical problem of incomplete testing of the vehicle transient performance.

[0113] The embodiment of the present application also provides a vehicle performance testing device. It should be noted that the vehicle performance testing device in the embodiment of the present application can be used to execute the vehicle performance testing method provided in the embodiment of the present application. The vehicle performance testing device provided in the embodiment of the present application is introduced below.

[0114] According to the embodiment of the present application, there is also provided a device for implementing the above vehicle performance testing device. Figure 4 It is a schematic diagram of a vehicle performance testing device according to an embodiment of the present invention, as Figure 4 shown. The device includes: an acquisition unit 401, a determination unit 402, and a testing unit 403.

[0115] The acquisition unit 401 is configured to acquire the to-be-tested parameters and gear state of the to-be-tested vehicle, where the to-be-tested parameters are performance parameters used to evaluate the dynamic response performance of the to-be-tested vehicle, and the gear state includes at least a first gear state or a second gear state. The first gear state is used to indicate that the to-be-tested vehicle is in gear, and the second gear state is used to indicate that the to-be-tested vehicle is in neutral.

[0116] The determination unit 402 is configured to determine the to-be-tested data of the to-be-tested vehicle based on the to-be-tested parameters and the gear state, where the to-be-tested data is used to indicate the range of performance testing of the to-be-tested vehicle.

[0117] The testing unit 403 is configured to perform performance testing on the to-be-tested vehicle according to the to-be-tested data to obtain a performance testing result, where the performance testing result is used to indicate the dynamic response performance of the to-be-tested vehicle.

[0118] Optionally, the determination unit 402 may include: a first determination module configured to determine the first to-be-tested data of the to-be-tested vehicle based on the to-be-tested parameters and the first gear state; a second determination module configured to determine the second to-be-tested data of the to-be-tested vehicle based on the to-be-tested parameters and the second gear state; and an integration module configured to integrate the first to-be-tested data and the second to-be-tested data to obtain the to-be-tested data.

[0119] Optionally, the first determination module may include: a first determination sub-module, configured to determine the to-be-tested data as first to-be-tested data in response to the to-be-tested parameter being a performance test parameter and the gear state of the to-be-tested vehicle being a first gear state, where the first to-be-tested data is used to indicate the engine performance data of the to-be-tested vehicle.

[0120] Optionally, the second determination module may include: a second determination sub-module, configured to determine the to-be-tested data as second to-be-tested data in response to the to-be-tested parameter being a mechanical test parameter and the gear state of the to-be-tested vehicle being a second gear state, where the second to-be-tested data is used to indicate the mechanical performance of the to-be-tested vehicle.

[0121] Optionally, the test unit 403 may include: an acquisition module, configured to perform a performance test on the to-be-tested vehicle according to the to-be-tested data to obtain a plurality of performance test parameters of the to-be-tested vehicle, where the test parameters are used to indicate the performance indicators of the to-be-tested vehicle under the to-be-tested data; a second determination module, configured to determine a performance test result based on the performance test parameters.

[0122] Optionally, the second determination module may include: a third determination sub-module, configured to integrate the plurality of performance test parameters by using a data processing model to determine a performance test result, where the data processing model is a model preset for processing performance test parameters.

[0123] In this embodiment, the to-be-tested parameter and the gear state of the to-be-tested vehicle are obtained, where the to-be-tested parameter is a performance parameter for evaluating the dynamic response performance of the to-be-tested vehicle, and the gear state includes at least a first gear state or a second gear state. The first gear state is used to indicate that the to-be-tested vehicle is in a gear state, and the second gear state is used to indicate that the to-be-tested vehicle is in a neutral state; based on the to-be-tested parameter and the gear state, the to-be-tested data of the to-be-tested vehicle is determined, where the to-be-tested data is used to indicate the range of the performance test on the to-be-tested vehicle; a performance test is performed on the to-be-tested vehicle according to the to-be-tested data to obtain a performance test result, where the test result is used to indicate the dynamic response performance of the to-be-tested vehicle. In this application, the to-be-tested data is determined according to the to-be-tested parameter and the gear state of the to-be-tested vehicle, and thus the performance test is performed on the to-be-tested vehicle according to the to-be-tested data. Since this application fully considers the to-be-tested parameter and the gear state of the to-be-tested vehicle, it avoids the situation where the test parameter design is unreasonable or the vehicle performance characteristics are not fully considered, achieves the purpose of comprehensively considering the performance characteristics of the to-be-tested vehicle, thereby solving the technical problem of incomplete vehicle performance testing and realizing the technical effect of comprehensively performing performance testing on the vehicle.

[0124] An embodiment of the present application further provides a computer-readable storage medium. The computer-readable storage medium includes an executable program stored therein. When the executable program runs, it controls the device where the computer-readable storage medium is located to execute the vehicle performance testing method in each embodiment of the present invention.

[0125] An embodiment of the present application further provides a processor. The processor is used to run a program. When the program runs, it executes the vehicle performance testing method in the embodiment of the present invention.

[0126] An embodiment of the present application further provides a vehicle. The vehicle is used to execute the vehicle performance testing method in the embodiment of the present invention.

[0127] In the above embodiments of the present invention, the descriptions of each embodiment have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0128] In the several embodiments provided by the present application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only illustrative. For example, the division of units can be a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection of units or modules can be in an electrical or other form.

[0129] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0130] In addition, the functional units in each embodiment of the present invention can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated units can be implemented in the form of hardware or in the form of software functional units.

[0131] When the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, read-only memories (ROMs), random access memories (RAMs), mobile hard disks, magnetic disks, or optical discs.

[0132] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A vehicle performance testing method, characterized in that: include: Acquire a parameter to be tested and a gear state of the vehicle to be tested, wherein the parameter to be tested is a performance parameter used to evaluate the dynamic response performance of the vehicle to be tested, and the gear state includes at least a first gear state or a second gear state, the first gear state is used to indicate that the vehicle to be tested is in a gear state, and the second gear state is used to indicate that the vehicle to be tested is in a neutral state; Determining the test data of the vehicle to be tested based on the test parameters and the gear state, wherein the test data is used to indicate the range of the performance test of the vehicle to be tested; According to the test data, a performance test is performed on the vehicle to be tested to obtain a performance test result, wherein the performance test result is used to indicate the dynamic response performance of the vehicle to be tested.

2. The method according to claim 1, characterized in that Determining the test data of the vehicle to be tested based on the test parameter and the gear state, including: Determining first test data of the vehicle to be tested based on the test parameter and the first gear state; Determining second test data of the vehicle to be tested based on the test parameter and the second gear state; The first data to be tested and the second data to be tested are integrated to obtain the data to be tested.

3. The method according to claim 2, characterized in that Determining first test data of the vehicle to be tested based on the test parameter and the first gear state includes: In response to the parameter to be tested being a performance test parameter and the gear state of the vehicle to be tested being the first gear state, the data to be tested is determined to be the first data to be tested, wherein the first data to be tested is used to indicate engine performance data of the vehicle to be tested.

4. The method according to claim 2, characterized in that: Determining second test data of the vehicle to be tested based on the test parameter and the second gear state includes: In response to the parameter to be tested being a mechanical test parameter and the gear state of the vehicle to be tested being the second gear state, the data to be tested is determined to be the second data to be tested, wherein the second data to be tested is used to indicate the mechanical performance of the vehicle to be tested.

5. The method according to claim 1, characterized in that: According to the test data, a performance test is performed on the test vehicle to obtain a performance test result, including: According to the test data, a performance test is performed on the test vehicle to obtain a plurality of performance test parameters of the test vehicle, wherein the test parameters are used to indicate the performance index of the test vehicle under the test data; Based on the performance test parameters, the performance test result is determined.

6. The method according to claim 5, characterized in that Determining the performance test result based on the performance test parameter includes: The plurality of performance test parameters are integrated using a data processing model to determine the performance test result, wherein the data processing model is a pre-set model for processing the performance test parameters.

7. A vehicle performance testing device, characterized in that: include: an acquisition unit, configured to acquire a parameter to be tested and a gear state of the vehicle to be tested, wherein the parameter to be tested is a performance parameter used to evaluate the dynamic response performance of the vehicle to be tested, and the gear state includes at least a first gear state or a second gear state, wherein the first gear state is used to indicate that the vehicle to be tested is in a gear state, and the second gear state is used to indicate that the vehicle to be tested is in a neutral state; A determination unit, configured to determine the test data of the vehicle to be tested based on the test parameters and the gear state, wherein the test data is used to indicate a range of a performance test for the vehicle to be tested; The testing unit is used to perform a performance test on the vehicle to be tested according to the test data to obtain a performance test result, wherein the performance test result is used to indicate the dynamic response performance of the vehicle to be tested.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is executed by a processor, the device where the storage medium is located is controlled to execute the method according to any one of claims 1 to 6.

9. A processor, characterized in that: The processor is used to run a program, wherein the program executes the method according to any one of claims 1 to 6 when running.

10. A vehicle, characterized in that: The vehicle is used to perform the method according to any one of claims 1 to 6.

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