Engine combustion noise testing method and device, vehicle and medium
By controlling the battery charge and operating conditions in the vehicle state and using a chassis dynamometer to collect noise sound pressure level, the problem of insufficient scenario adaptability and long cycle of traditional engine bench testing is solved, and the accurate separation and testing of engine combustion noise in parallel hybrid power systems is realized.
Patent Information
- Application Number
- CN202511778017.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-28
- Publication Date
- 2026-01-23
AI Technical Summary
Traditional engine bench tests cannot fully simulate the conditions of real vehicles, and suffer from insufficient adaptability to different scenarios, long cycles, and difficulty in separating engine combustion noise in parallel hybrid systems.
In the vehicle state, by controlling the vehicle battery power and operating conditions, the in-vehicle noise sound pressure level of the engine under different conditions is collected, and the chassis dynamometer is used for testing to separate the mechanical noise and isolate the combustion noise.
It achieves effective separation of engine combustion noise in parallel hybrid systems under vehicle conditions, providing an accurate and efficient testing method and a basis for noise control and optimization.
Smart Images
Figure CN121384475A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle technology, and in particular to an engine combustion noise testing method, apparatus, vehicle, and medium. Background Technology
[0002] In parallel hybrid systems, the engine needs to simultaneously drive the vehicle and charge the battery during charging, resulting in a significant increase in its load and intensified pressure fluctuations during combustion, which in turn leads to increased combustion noise. Currently, testing of engine combustion noise mainly relies on engine bench tests, but engine bench tests cannot fully simulate the operating conditions of real vehicles and have limitations such as insufficient scenario adaptability and long testing cycles.
[0003] In addition, unlike series hybrid systems, parallel hybrid systems require the electric motor to operate simultaneously when the engine starts, resulting in significant background noise interference. Furthermore, the operation of components such as the electric motor and transmission makes it particularly difficult to separate engine combustion noise from the overall vehicle noise, which urgently needs to be addressed. Summary of the Invention
[0004] This application provides an engine combustion noise testing method, device, vehicle, and medium to solve the problems of traditional engine bench testing, which cannot fully simulate the actual vehicle condition, has insufficient scenario adaptability, and has a long cycle. It can effectively separate the engine combustion noise in a parallel hybrid power system under the condition of the whole vehicle, and provides an accurate and efficient testing means for engine noise control and optimization.
[0005] The first aspect of this application provides a method for testing engine combustion noise, including the following steps: When the current battery charge of the vehicle under test is greater than a preset charge threshold, the vehicle under test is controlled to operate based on a preset operating condition, so that the engine of the vehicle under test is running but not performing external work, and the first in-vehicle noise sound pressure level of the vehicle under test is collected. Maintain the vehicle under test in the preset operating condition, control the current battery power consumption to be less than the preset power threshold, so that the engine of the vehicle under test is in the power generation state, and collect the second in-vehicle noise sound pressure level of the vehicle under test; Based on the first in-vehicle noise sound pressure level and the second in-vehicle noise sound pressure level, the engine combustion noise test results are obtained.
[0006] According to one embodiment of this application, the engine combustion noise test result is as follows: ; in, The results are from the engine combustion noise test. The first in-vehicle noise sound pressure level; This is the second in-vehicle noise sound pressure level.
[0007] According to one embodiment of this application, controlling the vehicle under test to operate based on preset operating conditions includes: The vehicle under test is fixed on the chassis dynamometer, and the rotating hub is controlled to drive the vehicle under test at a preset speed. The engine of the vehicle under test is controlled to run within the target speed range based on a preset gear.
[0008] According to one embodiment of this application, controlling the current battery power consumption to be less than the preset power threshold includes: Based on the vehicle's acceleration request, the motor of the vehicle under test is activated to discharge and consume the current battery power.
[0009] According to one embodiment of this application, the sampling locations for the first in-vehicle noise sound pressure level and the second in-vehicle noise sound pressure level include at least one of the driver's ear position, the front passenger's ear position, and the rear passenger's ear position.
[0010] According to the engine combustion noise testing method provided in this application embodiment, when the current battery charge of the vehicle under test is greater than a preset charge threshold, the vehicle under test is controlled to operate under preset operating conditions, and the first in-vehicle noise sound pressure level of the vehicle under test is collected; the vehicle under test is maintained in the preset operating conditions, and the current battery charge is controlled to be consumed to less than the preset charge threshold, so that the engine of the vehicle under test is in a power generation state, and the second in-vehicle noise sound pressure level of the vehicle under test is collected; based on the first in-vehicle noise sound pressure level and the second in-vehicle noise sound pressure level, the engine combustion noise test result is obtained. This solves the problems of insufficient scenario adaptability and long cycle in traditional engine bench tests, and can effectively separate the engine combustion noise in a parallel hybrid power system under whole vehicle conditions.
[0011] A second aspect of this application provides an engine combustion noise testing device, comprising: The first test module is used to control the vehicle under test to operate based on a preset operating condition when the current battery power of the vehicle under test is greater than a preset power threshold, so that the engine of the vehicle under test is running but not performing external work, and to collect the first in-vehicle noise sound pressure level of the vehicle under test. The second test module is used to maintain the vehicle under test in the preset operating conditions, control the current battery power consumption to be less than the preset power threshold, make the engine of the vehicle under test in the power generation state, and collect the second in-vehicle noise sound pressure level of the vehicle under test. The calculation module is used to obtain the engine combustion noise test results based on the first in-vehicle noise sound pressure level and the second in-vehicle noise sound pressure level.
[0012] According to one embodiment of this application, the engine combustion noise test result is as follows: ; in, The results are from the engine combustion noise test. The first in-vehicle noise sound pressure level; This is the second in-vehicle noise sound pressure level.
[0013] According to one embodiment of this application, the first test module is configured to: The vehicle under test is fixed on the chassis dynamometer, and the rotating hub is controlled to drive the vehicle under test at a preset speed. The engine of the vehicle under test is controlled to run within the target speed range based on a preset gear.
[0014] According to one embodiment of this application, the second test module is used for: Based on the vehicle's acceleration request, the motor of the vehicle under test is activated to discharge and consume the current battery power.
[0015] According to one embodiment of this application, the sampling locations for the first in-vehicle noise sound pressure level and the second in-vehicle noise sound pressure level include at least one of the driver's ear position, the front passenger's ear position, and the rear passenger's ear position.
[0016] According to the engine combustion noise testing device provided in this application embodiment, when the current battery charge of the vehicle under test is greater than a preset charge threshold, the vehicle under test is controlled to operate under preset operating conditions, and the first in-vehicle noise sound pressure level of the vehicle under test is collected; the vehicle under test is maintained in the preset operating conditions, and the current battery charge is controlled to be consumed to less than the preset charge threshold, so that the engine of the vehicle under test is in a power generation state, and the second in-vehicle noise sound pressure level of the vehicle under test is collected; based on the first in-vehicle noise sound pressure level and the second in-vehicle noise sound pressure level, the engine combustion noise test result is obtained. This solves the problems of insufficient scenario adaptability and long cycle in traditional engine bench tests, and can effectively separate the combustion noise of the engine in a parallel hybrid power system under the condition of the whole vehicle.
[0017] A third aspect of this application provides a vehicle, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the engine combustion noise testing method as described in the above embodiments.
[0018] A fourth aspect of this application provides a computer-readable storage medium storing computer instructions for causing the computer to perform the engine combustion noise testing method as described in the above embodiments.
[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0020] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a flowchart of an engine combustion noise testing method provided according to an embodiment of this application; Figure 2 This is a flowchart of an engine combustion noise testing method according to an embodiment of this application; Figure 3 This is a block diagram of an engine combustion noise testing device according to an embodiment of this application; Figure 4 This is a schematic diagram of the vehicle structure provided in an embodiment of this application. Detailed Implementation
[0021] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.
[0022] The following description, with reference to the accompanying drawings, outlines an engine combustion noise testing method, apparatus, vehicle, and medium according to embodiments of this application. Addressing the issues of insufficient scenario adaptability and long testing cycles associated with traditional engine bench tests mentioned in the background, this application provides a method for testing engine noise in a parallel hybrid powertrain system based on a chassis dynamometer. This method can extract the combustion noise of the parallel hybrid engine within the vehicle without separating the vehicle and engine, thereby allowing for the investigation of the effects of different engine speeds, torques, ignition angles, pre-injection, and VVT angles on engine noise, providing a new approach for noise control in parallel hybrid electric vehicle engines.
[0023] Specifically, Figure 1 This is a schematic flowchart of an engine combustion noise testing method provided in an embodiment of this application.
[0024] This method can be applied to hybrid vehicles in parallel mode, and can also be used to test the noise of other vehicle systems.
[0025] like Figure 1 As shown, the engine combustion noise test method includes the following steps: In step S101, when the current battery power of the vehicle under test is greater than the preset power threshold, the vehicle under test is controlled to operate based on the preset operating conditions, so that the engine of the vehicle under test is running but not performing external work, and the first in-vehicle noise sound pressure level of the vehicle under test is collected.
[0026] Furthermore, in some embodiments, controlling the vehicle under test to operate based on preset operating conditions includes: fixing the vehicle under test to the chassis dynamometer, controlling the rotating hub to drive the vehicle under test to operate based on a preset speed, and controlling the engine of the vehicle under test to operate within a target speed range based on a preset gear.
[0027] For example, a full-battery hub-and-spoke test is first performed. The vehicle is fixed on a chassis dynamometer, and the vehicle is driven by a hub. The hub speed is fixed, and then the vehicle is put into manual mode (M). Different gears can be switched to keep the engine at different speeds, ensuring that the battery charge is above the feed line and the engine is running. At this time, since the hub is driving the vehicle, the engine does not perform any work externally, and only mechanical noise is present. The noise at the driver or passenger's location inside the vehicle is recorded using measuring equipment. Since the hub speed can be precisely controlled, the mechanical noise (i.e., the first in-vehicle noise sound pressure level) of the engine at almost all speed ranges can be tested by controlling the hub speed.
[0028] In step S102, the vehicle under test is kept in a preset operating condition, the current battery power consumption is controlled to be less than a preset power threshold, the engine of the vehicle under test is put into a power generation state, and the second in-vehicle noise sound pressure level of the vehicle under test is collected.
[0029] Furthermore, in some embodiments, controlling the current battery power consumption to be less than a preset power threshold includes: based on a vehicle acceleration request, starting the motor of the vehicle under test to perform a discharge operation to consume the current battery power.
[0030] Specifically, this application embodiment is a vehicle-to-electric hub-and-spoke test. The hub speed and gear are the same as those in the above-mentioned fully charged hub-and-spoke test. Then, the driver presses the accelerator pedal. At this time, the battery does work and consumes electricity. When the battery charge is below the feed line, the engine is kept running. At this time, the engine is generating electricity. At this time, the engine has mechanical noise and combustion noise. The noise inside the vehicle at this time (i.e., the second in-vehicle noise sound pressure level) is recorded. The above method can also be controlled by calibration personnel.
[0031] Furthermore, in some embodiments, the sampling locations for the first in-vehicle noise sound pressure level and the second in-vehicle noise sound pressure level include at least one of the driver's ear position, the front passenger's ear position, and the rear passenger's ear position.
[0032] In step S103, the engine combustion noise test results are obtained based on the first in-vehicle noise sound pressure level and the second in-vehicle noise sound pressure level.
[0033] Specifically, this application embodiment performs engine combustion noise stripping. First, the sound pressure level of the vehicle interior noise is calculated when the vehicle is fully charged. Then, the sound pressure level of the vehicle interior noise is calculated when the vehicle is de-charged. The background noise is eliminated by subtracting the noise energy of the vehicle interior when fully charged from the noise energy when the vehicle is de-charged. The specific method is as follows: the sound pressure level of engine combustion noise at each measuring point inside the vehicle is obtained.
[0034] ; in, The results are the engine combustion noise test results (i.e., the sound pressure level of the vehicle interior noise under the sole effect of engine combustion). The first in-vehicle noise sound pressure level (in-vehicle noise sound pressure level under the sole effect of engine mechanical noise); The second in-vehicle noise sound pressure level (the in-vehicle noise sound pressure level under the combined effect of engine combustion noise and mechanical noise).
[0035] To facilitate a more intuitive understanding by those skilled in the art of the present application's method for testing engine noise in a parallel hybrid power system based on a chassis dynamometer, the following is combined with... Figure 2 Please provide a detailed explanation.
[0036] like Figure 2 As shown, the engine noise test method includes: firstly, conducting an in-vehicle engine mechanical noise test. Based on the chassis dynamometer, the vehicle is driven by a rotating hub. First, the vehicle speed is fixed, ensuring that the battery charge is above the feeder line and the engine is kept running. At this time, since the rotating hub is driving the vehicle, the engine does not perform external work and only mechanical noise exists. The in-vehicle noise is recorded using a measuring device.
[0037] Next, the engine mechanical and combustion noise tests were conducted inside the vehicle. The driver pressed the accelerator pedal, at which point the battery worked and consumed power. When the battery power was below the feeder line, the accelerator pedal was released, at which point the engine worked to generate electricity. At this time, the engine produced mechanical and combustion noise, and the noise inside the vehicle was recorded.
[0038] Finally, the test data was processed. The noise inside the vehicle when the battery was depleted was used to eliminate the noise inside the vehicle when the battery was fully charged. The resulting noise was the engine combustion noise inside the vehicle.
[0039] According to the engine combustion noise testing method proposed in this application, when the current battery charge of the vehicle under test is greater than a preset charge threshold, the vehicle under test is controlled to operate under preset operating conditions, and the first in-vehicle noise sound pressure level of the vehicle under test is collected; the vehicle under test is maintained in the preset operating conditions, and the current battery charge is controlled to be consumed to less than the preset charge threshold, so that the engine of the vehicle under test is in a power generation state, and the second in-vehicle noise sound pressure level of the vehicle under test is collected; based on the first in-vehicle noise sound pressure level and the second in-vehicle noise sound pressure level, the engine combustion noise test result is obtained. This solves the problems of insufficient scenario adaptability and long cycle in traditional engine bench testing, and can effectively separate the engine combustion noise in a parallel hybrid power system under whole vehicle conditions.
[0040] Next, the engine combustion noise testing device proposed according to the embodiments of this application is described with reference to the accompanying drawings.
[0041] Figure 3 This is a block diagram of an engine combustion noise testing device according to an embodiment of this application.
[0042] like Figure 3 As shown, the engine combustion noise testing device 10 includes: a first testing module 100, a second testing module 200, and a calculation module 300.
[0043] The first testing module 100 is used to control the vehicle under test to operate under preset operating conditions when the current battery power of the vehicle under test is greater than a preset power threshold, so that the engine of the vehicle under test is running but not performing external work, and to collect the first in-vehicle noise sound pressure level of the vehicle under test; the second testing module 200 is used to maintain the vehicle under test in the preset operating conditions, control the current battery power consumption to be less than the preset power threshold, so that the engine of the vehicle under test is in a working power generation state, and to collect the second in-vehicle noise sound pressure level of the vehicle under test; the calculation module 300 is used to obtain the engine combustion noise test results based on the first in-vehicle noise sound pressure level and the second in-vehicle noise sound pressure level.
[0044] Furthermore, in some embodiments, the engine combustion noise test results are as follows: ; in, The results are from the engine combustion noise test. The first in-vehicle noise sound pressure level; This is the second in-vehicle noise sound pressure level.
[0045] Furthermore, in some embodiments, the first test module 100 is used for: The vehicle to be tested is fixed on the chassis dynamometer, and the dynamometer is controlled to drive the vehicle to run at a preset speed. The engine of the vehicle to be tested is controlled to run within the target speed range based on a preset gear.
[0046] Furthermore, in some embodiments, the second test module 200 is used to: based on a vehicle acceleration request, start the motor of the vehicle under test to perform a discharge operation to consume the current battery power.
[0047] Furthermore, in some embodiments, the sampling locations for the first in-vehicle noise sound pressure level and the second in-vehicle noise sound pressure level include at least one of the driver's ear position, the front passenger's ear position, and the rear passenger's ear position.
[0048] It should be noted that the foregoing explanation of the engine combustion noise test method embodiment also applies to the engine combustion noise test device of this embodiment, and will not be repeated here.
[0049] According to the engine combustion noise testing device proposed in this application, when the current battery charge of the vehicle under test is greater than a preset charge threshold, the vehicle under test is controlled to operate under preset operating conditions, and the first in-vehicle noise sound pressure level of the vehicle under test is collected; the vehicle under test is maintained in the preset operating conditions, and the current battery charge is controlled to be consumed to less than the preset charge threshold, so that the engine of the vehicle under test is in a power generation state, and the second in-vehicle noise sound pressure level of the vehicle under test is collected; based on the first in-vehicle noise sound pressure level and the second in-vehicle noise sound pressure level, the engine combustion noise test result is obtained. This solves the problems of insufficient scenario adaptability and long cycle in traditional engine bench tests, and can effectively separate the combustion noise of the engine in a parallel hybrid power system under the condition of the whole vehicle.
[0050] Figure 4 A schematic diagram of the structure of a vehicle provided in an embodiment of this application. The vehicle may include: The memory 401, the processor 402, and the computer program stored on the memory 401 and capable of running on the processor 402.
[0051] When the processor 402 executes the program, it implements the engine combustion noise testing method provided in the above embodiments.
[0052] Furthermore, the vehicle also includes: Communication interface 403 is used for communication between memory 401 and processor 402.
[0053] The memory 401 is used to store computer programs that can run on the processor 402.
[0054] Memory 401 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.
[0055] If the memory 401, processor 402, and communication interface 403 are implemented independently, then the communication interface 403, memory 401, and processor 402 can be interconnected via a bus to complete communication between them. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized into address buses, data buses, control buses, etc. For ease of representation, Figure 4 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.
[0056] Optionally, in a specific implementation, if the memory 401, processor 402, and communication interface 403 are integrated on a single chip, then the memory 401, processor 402, and communication interface 403 can communicate with each other through an internal interface.
[0057] Processor 402 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.
[0058] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the engine combustion noise testing method described above.
[0059] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0061] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.
[0062] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.
[0063] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.
[0064] Those skilled in the art will understand that all or part of the steps of the methods described in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it includes one or a combination of the steps of the method embodiments.
[0065] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.
[0066] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.
Claims
1. A method for testing engine combustion noise, characterized in that, Includes the following steps: When the current battery charge of the vehicle under test is greater than a preset charge threshold, the vehicle under test is controlled to operate based on a preset operating condition, so that the engine of the vehicle under test is running but not performing external work, and the first in-vehicle noise sound pressure level of the vehicle under test is collected. Maintain the vehicle under test in the preset operating condition, control the current battery power consumption to be less than the preset power threshold, so that the engine of the vehicle under test is in the power generation state, and collect the second in-vehicle noise sound pressure level of the vehicle under test; Based on the first in-vehicle noise sound pressure level and the second in-vehicle noise sound pressure level, the engine combustion noise test results are obtained.
2. The method according to claim 1, characterized in that, The engine combustion noise test results are as follows: ； in, The results are from the engine combustion noise test. The first in-vehicle noise sound pressure level; This is the second in-vehicle noise sound pressure level.
3. The method according to claim 1, characterized in that, The control of the vehicle under test to operate based on preset operating conditions includes: The vehicle under test is fixed on the chassis dynamometer, and the rotating hub is controlled to drive the vehicle under test at a preset speed. The engine of the vehicle under test is controlled to run within the target speed range based on a preset gear.
4. The method according to claim 1, characterized in that, Controlling the current battery power consumption to be less than the preset power threshold includes: Based on the vehicle's acceleration request, the motor of the vehicle under test is activated to discharge and consume the current battery power.
5. The method according to claim 1, characterized in that, The sampling locations for the first and second in-vehicle noise sound pressure levels include at least one of the following: the driver's ear position, the front passenger's ear position, and the rear passenger's ear position.
6. An engine combustion noise testing device, characterized in that, include: The first test module is used to control the vehicle under test to operate based on a preset operating condition when the current battery power of the vehicle under test is greater than a preset power threshold, so that the engine of the vehicle under test is running but not performing external work, and to collect the first in-vehicle noise sound pressure level of the vehicle under test. The second test module is used to maintain the vehicle under test in the preset operating conditions, control the current battery power consumption to be less than the preset power threshold, make the engine of the vehicle under test in the power generation state, and collect the second in-vehicle noise sound pressure level of the vehicle under test. The calculation module is used to obtain the engine combustion noise test results based on the first in-vehicle noise sound pressure level and the second in-vehicle noise sound pressure level.
7. The apparatus according to claim 6, characterized in that, The engine combustion noise test results are as follows: ； in, The results are from the engine combustion noise test. The first in-vehicle noise sound pressure level; This is the second in-vehicle noise sound pressure level.
8. The apparatus according to claim 6, characterized in that, The first test module is used for: The vehicle under test is fixed on the chassis dynamometer, and the rotating hub is controlled to drive the vehicle under test at a preset speed. The engine of the vehicle under test is controlled to run within the target speed range based on a preset gear.
9. A vehicle, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the computer program to implement the engine combustion noise test method as described in any one of claims 1-5.
10. A computer-readable storage medium having a computer program stored thereon, characterized in that, The computer program is executed by a processor to implement the engine combustion noise test method as described in any one of claims 1-5.