Air intake and exhaust tuning method and device for hybrid electric vehicle

Abstract

The invention relates to the technical field of air intake and exhaust tuning, in particular to an air intake and exhaust tuning method and device for a hybrid electric vehicle, and the method comprises the steps: obtaining the initial working condition operation parameters of an engine of a target hybrid electric vehicle in at least one air intake and exhaust tuning working condition; on the basis of the initial working condition operation parameters, current working condition operation parameters of an engine of the target hybrid electric vehicle in the corresponding intake and exhaust tuning working condition in the static state are determined, and sound data of the target hybrid electric vehicle are collected; and generating an adjustment value of the engine according to the sound data, and adjusting the current working condition operation parameters until the sound data meeting a certain sound condition is obtained. Therefore, the problems of high operation cost and complex test process of a rotating hub noise elimination test room in the prior art are solved; the problems that the engine power of a hybrid electric vehicle is limited by cooperative control of a battery and a motor, working condition breakpoints often occur, intake and exhaust tuning data distortion is caused, and the research and development cost and cycle are greatly increased are solved.

Description

Technical Field

[0001] This application relates to the field of intake and exhaust tuning technology, and in particular to a method and apparatus for intake and exhaust tuning of a hybrid electric vehicle. Background Technology

[0002] In related technologies, vehicle exhaust tuning can be performed in a rotating drum silencing test chamber, where the vehicle drives on the drum to allow the engine to operate under different conditions, thereby enabling exhaust tuning. Alternatively, the tuning stability of hybrid vehicles can be improved by optimizing battery management strategies to reduce engine start-stop frequency.

[0003] However, among related technologies, the operating cost of the drum silencing test chamber is high, and the test process requires precise control of dozens of parameters such as speed and load, which is complex and prone to errors. Furthermore, because the engine power of hybrid vehicles is limited by the coordinated control of the battery and motor, there are often breakpoints in the operating conditions during the drum test, which leads to distortion of intake and exhaust sound tuning data. Repeated retesting is required, which greatly increases the research and development costs and cycle, and urgently needs to be improved. Summary of the Invention

[0004] This application provides a method and apparatus for tuning the intake and exhaust of a hybrid electric vehicle, in order to solve the problems in the related technologies, such as the high operating cost and complex testing process of the drum silencing test chamber; and the frequent occurrence of operating condition breaks in hybrid electric vehicles due to the limitation of engine power by the coordinated control of the battery and motor, which leads to the distortion of intake and exhaust tuning data and significantly increases the research and development costs and cycle.

[0005] The first aspect of this application provides a method for tuning the intake and exhaust sounds of a hybrid electric vehicle, comprising the following steps: obtaining initial operating parameters of the engine of a target hybrid electric vehicle in at least one intake and exhaust tuning condition; determining, based on the initial operating parameters, the current operating parameters of the engine of the target hybrid electric vehicle in the corresponding intake and exhaust tuning condition when stationary, and collecting sound data of the target hybrid electric vehicle in the corresponding intake and exhaust tuning condition; generating an adjustment value for the engine based on the sound data, and adjusting the current operating parameters according to the adjustment value, until sound data satisfying preset sound conditions is obtained based on the adjusted operating parameters.

[0006] Optionally, in one embodiment of this application, obtaining the initial operating parameters of the engine of the target hybrid vehicle in at least one intake and exhaust tuning condition includes: obtaining operating data for the corresponding intake and exhaust tuning condition based on the target hybrid vehicle; and inputting the operating data into a pre-built intake and exhaust tuning parameter model to obtain the initial operating parameters.

[0007] Optionally, in one embodiment of this application, before obtaining the initial operating parameters of the engine of the target hybrid vehicle in at least one intake and exhaust tuning condition, the method further includes: obtaining test condition data for the corresponding intake and exhaust tuning condition based on the test hybrid vehicle; obtaining the operating parameters of the engine in the test hybrid vehicle based on the test condition data; and constructing the intake and exhaust tuning parameter model based on the operating parameters and the test condition data.

[0008] Optionally, in one embodiment of this application, the step of constructing the intake and exhaust sound tuning parameter model based on the operating condition parameters and the test operating condition data includes: using the intake and exhaust valve opening, noise ratio, and intake and exhaust back pressure change rate in the test operating condition data as input data for the intake and exhaust sound tuning parameter model; using the engine power, speed, and speed increase rate in the operating condition parameters as output data for the intake and exhaust sound tuning parameter model; selecting a model structure and model parameters suitable for the intake and exhaust sound tuning parameter model based on the input data and the output data; and constructing the intake and exhaust sound tuning parameter model based on the model structure and the model parameters.

[0009] Optionally, in one embodiment of this application, determining the current operating parameters of the engine of the target hybrid vehicle in the corresponding intake and exhaust tuning condition when stationary includes: detecting whether the output power in the current operating parameters is greater than a preset threshold; if the output power is detected to be greater than the preset threshold, generating a compensation value for the engine based on the operating parameters of the generator in the target hybrid vehicle, and determining the current operating parameters based on the compensation value and the output power.

[0010] Optionally, in one embodiment of this application, the step of collecting sound data of the target hybrid vehicle under corresponding intake and exhaust tuning conditions includes: determining the monitoring point of the sound data based on the corresponding intake and exhaust tuning conditions; and acquiring the sound data based on the monitoring point.

[0011] A second aspect of this application provides an intake and exhaust tuning device for a hybrid electric vehicle, comprising: a first acquisition module, configured to acquire initial operating parameters of the engine of a target hybrid electric vehicle in at least one intake and exhaust tuning condition; a collection module, configured to determine, based on the initial operating parameters, the current operating parameters of the engine of the target hybrid electric vehicle in a stationary state under the corresponding intake and exhaust tuning condition, and collect sound data of the target hybrid electric vehicle under the corresponding intake and exhaust tuning condition; and a generation module, configured to generate an adjustment value for the engine based on the sound data, and adjust the current operating parameters according to the adjustment value until sound data satisfying preset sound conditions is obtained based on the adjusted operating parameters.

[0012] Optionally, in one embodiment of this application, the first acquisition module includes: a first acquisition unit, configured to acquire operating condition data corresponding to the intake and exhaust tuning conditions based on the target hybrid vehicle; and a generation unit, configured to input the operating condition data into a pre-constructed intake and exhaust tuning parameter model to obtain the initial operating condition parameters.

[0013] Optionally, in one embodiment of this application, it further includes: a second acquisition module, configured to acquire test condition data for the corresponding intake and exhaust tuning conditions based on the test hybrid vehicle before acquiring the initial operating parameters of the engine of the target hybrid vehicle in at least one intake and exhaust tuning condition; a third acquisition module, configured to acquire the operating parameters of the engine in the test hybrid vehicle based on the test condition data; and a construction module, configured to construct the intake and exhaust tuning parameter model based on the operating parameters and the test condition data.

[0014] Optionally, in one embodiment of this application, the construction module includes: a selection unit, used to take the intake and exhaust valve opening, noise ratio, and intake and exhaust back pressure change rate in the test condition data as input data for the intake and exhaust sound tuning parameter model, and take the engine power, speed, and speed increase rate in the operating parameters as output data for the intake and exhaust sound tuning parameter model, and select a model structure and model parameters suitable for the intake and exhaust sound tuning parameter model based on the input data and the output data; and a construction unit, used to construct the intake and exhaust sound tuning parameter model based on the model structure and the model parameters.

[0015] Optionally, in one embodiment of this application, the acquisition module includes: a detection unit, configured to detect whether the output power in the current operating condition parameters is greater than a preset threshold; and a first determination unit, configured to, when the output power is detected to be greater than the preset threshold, generate a compensation value for the engine based on the operating parameters of the generator in the target hybrid electric vehicle, and determine the current operating condition parameters based on the compensation value and the output power.

[0016] Optionally, in one embodiment of this application, the acquisition module includes: a second determining unit, configured to determine the monitoring point of the sound data based on the corresponding intake and exhaust tuning conditions; and a second acquiring unit, configured to acquire the sound data based on the monitoring point.

[0017] A third aspect of this application provides an electronic device, 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 intake and exhaust tuning method for a hybrid electric vehicle as described in the above embodiments.

[0018] A fourth aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method for tuning the intake and exhaust of a hybrid electric vehicle.

[0019] A fifth aspect of this application provides a hybrid electric vehicle, the hybrid electric vehicle including the electronic devices described above.

[0020] A sixth aspect of this application provides a computer program product, including a computer program that, when executed, implements the above-described method for tuning the intake and exhaust of a hybrid electric vehicle.

[0021] This application embodiment can first obtain the initial operating parameters of the engine of the target hybrid vehicle under intake and exhaust tuning conditions, thereby determining the current operating parameters of the engine of the target hybrid vehicle under the corresponding intake and exhaust tuning conditions when stationary. Based on the collected sound data, it generates engine adjustment values ​​until sound data meeting certain sound conditions is obtained. Tuning can be performed on any muffler, automating the tuning process, reducing human error, improving tuning accuracy, reducing equipment and labor costs, and shortening the R&D cycle. It allows the engine to operate at different continuous operating points while the vehicle is stationary, providing conditions for intake and exhaust tuning in a stationary state. It is compatible with multiple types of hybrid vehicles and supports personalized acoustic customization. Therefore, it solves the technical problems in related technologies, such as the high operating cost and complex testing process of the rotating drum muffler test chamber; and the frequent occurrence of operating condition breaks in hybrid vehicles due to the limitation of engine power by the coordinated control of the battery and motor, leading to distortion of intake and exhaust tuning data and significantly increasing R&D costs and cycles.

[0022] 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

[0023] 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 intake and exhaust tuning method for a hybrid electric vehicle according to an embodiment of this application; Figure 2 This is a flowchart illustrating the working principle of an intake and exhaust tuning method for a hybrid electric vehicle according to an embodiment of this application; Figure 3 This is a block diagram illustrating a battery capacity modification according to an embodiment of this application; Figure 4 This is a block diagram of the intake and exhaust tuning device for a hybrid electric vehicle according to an embodiment of this application; Figure 5 This is a schematic diagram of the structure of an electronic device provided according to an embodiment of this application.

[0024] Figure label: Among them, 10-the intake and exhaust tuning device of hybrid electric vehicle; 100-the first acquisition module, 200-the acquisition module, 300-the generation module; 501-the memory, 502-the processor, 503-the communication interface. Detailed Implementation

[0025] The embodiments of this application are described in detail below. Examples of the 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.

[0026] The following description, with reference to the accompanying drawings, describes a method and apparatus for tuning the intake and exhaust of a hybrid electric vehicle according to embodiments of this application. Addressing the issues mentioned in the background art, such as the high operating cost and complex testing process of rotary drum muffler test chambers, and the frequent occurrence of operating condition breaks in hybrid electric vehicles due to the limitation of engine power by the coordinated control of the battery and motor, leading to distortion of intake and exhaust tuning data and significantly increasing R&D costs and timelines, this application provides a method for tuning the intake and exhaust of a hybrid electric vehicle. In this method, the initial operating parameters of the engine of the target hybrid electric vehicle under intake and exhaust tuning conditions are first obtained. This determines the current operating parameters of the engine of the target hybrid electric vehicle in the corresponding intake and exhaust tuning conditions when stationary. Adjustment values ​​for the engine are generated based on the collected sound data until sound data meeting certain sound conditions is obtained. Tuning can be performed on any muffler, automating the tuning process, reducing human error, improving tuning accuracy, reducing equipment and labor costs, and shortening the R&D cycle. It allows the engine to operate at different continuous operating points while the vehicle is stationary, providing conditions for intake and exhaust tuning in a stationary state. It is compatible with multiple types of hybrid vehicles and supports personalized acoustic customization. This solves the technical problems in related technologies, such as the high operating cost and complex testing process of the drum silencing test chamber; and the frequent occurrence of operating condition breaks in hybrid vehicles due to the limitation of engine power by the coordinated control of the battery and motor, which leads to distortion of intake and exhaust sound tuning data and significantly increases R&D costs and time.

[0027] Specifically, Figure 1 This is a flowchart of a method for tuning the intake and exhaust of a hybrid electric vehicle according to an embodiment of this application.

[0028] like Figure 1 As shown, the intake and exhaust tuning method for this hybrid vehicle includes the following steps: In step S101, the initial operating parameters of the engine of the target hybrid vehicle in at least one intake and exhaust tuning condition are obtained.

[0029] As one possible approach, embodiments of this application can obtain the initial operating parameters of the engine of the target hybrid electric vehicle under corresponding intake and exhaust tuning conditions.

[0030] The intake and exhaust tuning conditions may include, but are not limited to, full throttle acceleration (WOT), partial throttle acceleration (POT), coasting, idling, and stationary conditions. This application does not impose specific restrictions.

[0031] Optionally, in one embodiment of this application, obtaining the initial operating parameters of the engine of the target hybrid vehicle in at least one intake and exhaust tuning condition includes: obtaining operating data for the corresponding intake and exhaust tuning condition based on the target hybrid vehicle; and inputting the operating data into a pre-built intake and exhaust tuning parameter model to obtain the initial operating parameters.

[0032] In some embodiments, the present application can obtain operating condition data for the corresponding intake and exhaust tuning conditions based on the target hybrid electric vehicle, and then use a pre-built intake and exhaust tuning parameter model to obtain the corresponding initial operating condition parameters.

[0033] Optionally, in one embodiment of this application, before obtaining the initial operating parameters of the engine of the target hybrid vehicle in at least one intake and exhaust tuning condition, the method further includes: obtaining test condition data for the corresponding intake and exhaust tuning condition based on the test hybrid vehicle; obtaining the operating parameters of the engine in the test hybrid vehicle based on the test condition data; and constructing an intake and exhaust tuning parameter model based on the operating parameters and the test condition data.

[0034] It is understood that, in the embodiments of this application, the test condition data may include, but is not limited to, the intake and exhaust valve opening, engine speed and torque curves, intake and exhaust back pressure, sound pressure level and spectrum distribution, etc. in the WOT condition; the intake and exhaust valve opening, speed and torque under partial load, intake and exhaust flow rate and velocity, noise level and harmonic components, etc. in the POT condition; the intake and exhaust valve opening, engine speed decay rate, intake and exhaust pulse interval, residual noise level, etc. in the coasting condition; the intake and exhaust valve opening, idle speed stability, intake and exhaust manifold temperature and pressure, idle noise level and spectrum, etc. in the idling condition; and the intake and exhaust valve opening, engine net power corresponding speed, intake and exhaust system vibration and displacement, acoustic transmission path analysis, etc. in the stationary condition. This application does not impose specific limitations.

[0035] As one possible approach, embodiments of this application may first select a hybrid electric vehicle for testing and obtain test condition data under different intake and exhaust tuning conditions, thereby obtaining engine operating parameters such as engine power, speed, and speed rise rate. This application does not impose any specific limitations.

[0036] Furthermore, in this embodiment of the application, an intake and exhaust tuning parameter model can be constructed based on operating parameters and test data.

[0037] For example, in this application embodiment, a hybrid electric vehicle can be selected for testing, and the engine's operating parameters can be obtained based on the operating data corresponding to different intake and exhaust tuning conditions. Furthermore, in this application embodiment, the operating parameters can be formed into an independent software package to construct a corresponding intake and exhaust tuning parameter model for use in intake and exhaust tuning under static conditions. For example, in this application embodiment, engine power, speed, and speed rise rate can be used to simulate the engine operating curve under WOT conditions, as shown in Table 1. Table 1 is a schematic table of engine operating parameters under WOT conditions provided according to one embodiment of this application.

[0038] Table 1

[0039] Optionally, in one embodiment of this application, an intake and exhaust sound tuning parameter model is constructed based on operating parameters and test operating data, including: using the intake and exhaust valve opening, noise ratio, and intake and exhaust back pressure change rate from the test operating data as input data for the intake and exhaust sound tuning parameter model; using the engine power, speed, and speed increase rate from the operating parameters as output data for the intake and exhaust sound tuning parameter model; selecting a model structure and model parameters suitable for the intake and exhaust sound tuning parameter model based on the input and output data; and constructing the intake and exhaust sound tuning parameter model based on the model structure and model parameters.

[0040] In some embodiments, the present application embodiments can use the intake and exhaust valve opening, noise ratio, and intake and exhaust back pressure change rate in the test operating condition data as input data for the intake and exhaust sound tuning parameter model, and use the engine power, speed, and speed increase rate in the operating condition parameters as output data for the intake and exhaust sound tuning parameter model. Then, based on the input data and output data, a model structure and model parameters suitable for the intake and exhaust sound tuning parameter model are selected, and the corresponding intake and exhaust sound tuning parameter model is constructed.

[0041] For example, the input data of the intake and exhaust sound tuning parameter model constructed in this application embodiment is a 3-dimensional vector, including intake and exhaust valve opening, noise ratio, intake and exhaust back pressure change rate, etc., and the output data is a 3-dimensional variable, including power, speed, speed increase rate, etc.

[0042] Furthermore, based on the nonlinear relationship between intake and exhaust back pressure and engine speed, this application embodiment can select a linear regression model that is simple to calculate and highly interpretable; it can select a decision tree regression model that is suitable for handling nonlinear relationships and does not require feature scaling; or it can select a support vector regression model that is suitable for small sample high-dimensional data and outputs smooth data. The specific settings can be made by those skilled in the art according to the actual situation, and this application does not impose specific limitations.

[0043] In this embodiment, the model can be used to normalize the input and output data and divide the data into training data and test data to determine the parameters of the model, thereby constructing the corresponding intake and exhaust tuning parameter model. Based on the test condition data in different intake and exhaust tuning conditions, the corresponding control strategy can be determined and the corresponding operating parameters can be generated.

[0044] In step S102, based on the initial operating parameters, the current operating parameters of the engine of the target hybrid vehicle in the corresponding intake and exhaust tuning condition when stationary are determined, and the sound data of the target hybrid vehicle in the corresponding intake and exhaust tuning condition are collected.

[0045] In actual implementation, the embodiments of this application can determine the current operating parameters of the engine of the target hybrid vehicle in the corresponding intake and exhaust tuning condition when it is stationary, based on the initial operating parameters, and collect the corresponding sound data.

[0046] Optionally, in one embodiment of this application, determining the current operating parameters of the engine of the target hybrid electric vehicle in the corresponding intake and exhaust tuning condition when the vehicle is stationary includes: detecting whether the output power in the current operating parameters is greater than a preset threshold; if the output power is detected to be greater than the preset threshold, generating a compensation value for the engine based on the operating parameters of the generator in the target hybrid electric vehicle, and determining the current operating parameters based on the compensation value and the output power.

[0047] In some embodiments, this application can detect whether the output power in the current operating parameters exceeds a certain threshold. If it does, a compensation value for the engine is generated based on the operating parameters of the generator in the target hybrid vehicle, thereby determining the current operating parameters. The certain threshold can be set by those skilled in the art according to actual conditions, and this application does not impose specific limitations.

[0048] For example, in the embodiments of this application, when the target hybrid vehicle is stationary, the limiting conditions for the external output of engine power and torque are removed, and the acceptance conditions of the battery pack are adjusted so that the engine can operate at different speeds and power when stationary.

[0049] This application embodiment can be understood as follows: to ensure that the engine operates under WOT, POT, and other conditions when the target hybrid vehicle is stationary, the vehicle control strategy needs to be appropriately modified to disable control strategies that restrict the engine's operation at different speeds and power levels. This involves modifying the battery capacity. Because the battery pack capacity of hybrid vehicles is relatively small, when the engine is driven by software to perform intake and exhaust tuning in a stationary state, the engine's external output power is limited by the battery pack, preventing the completion of intake and exhaust tuning. Therefore, this application embodiment can connect an external load circuit or external power supply in parallel to the hybrid system's external output circuit, optimizing parameters such as battery pack temperature and SOC (State of Charge). This allows the battery to accept the current output by the engine, and the current output by the hybrid system can be received by a load outside the vehicle, ensuring that the engine can continuously operate under intake and exhaust tuning conditions.

[0050] In this embodiment of the application, when the hybrid vehicle is stationary, the engine is driven by software to operate under different intake and exhaust tuning conditions to carry out intake and exhaust tuning, so as to achieve intake and exhaust tuning without the need for hub rotation or vehicle movement.

[0051] Optionally, in one embodiment of this application, collecting sound data of the target hybrid vehicle under corresponding intake and exhaust tuning conditions includes: determining the monitoring point of the sound data based on the corresponding intake and exhaust tuning conditions; and acquiring the sound data based on the monitoring point.

[0052] It is understood that the embodiments of this application can determine the corresponding monitoring points according to different intake and exhaust sound tuning conditions, and then arrange the sensors required for intake and exhaust sound tuning. The monitoring points may include, but are not limited to, the intake and exhaust pipe openings, the near field of the muffler, the suspension vibration, the driver's inner ear in the vehicle, the rear seat in the vehicle, etc. This application does not make specific limitations.

[0053] For example, in the WOT (Workover) condition, monitoring point 1 can be set to the intake and exhaust pipe openings, and monitoring point 2 can be set to the driver's inner ear inside the vehicle, thereby acquiring the corresponding sound data; in the POT (Position Over Time) condition, monitoring point 1 can be set to the near field of the muffler, and monitoring point 2 can be set to the rear seat inside the vehicle, thereby acquiring the corresponding sound data; in the coasting condition, monitoring point 1 can be set to the suspension vibration, and monitoring point 2 can be set to the driver's inner ear inside the vehicle, thereby acquiring the corresponding sound data; in the idling condition, monitoring point 1 can be set to the intake and exhaust pipe openings, and monitoring point 2 can be set to the rear seat inside the vehicle, thereby acquiring the corresponding sound data.

[0054] In step S103, an adjustment value for the engine is generated based on the sound data, and the current operating parameters are adjusted according to the adjustment value until sound data that meets the preset sound conditions is obtained based on the adjusted operating parameters.

[0055] As one possible implementation, embodiments of this application can generate engine adjustment values ​​based on sound data, and adjust the corresponding operating parameters according to the adjustment values ​​until the sound data obtained based on the adjusted operating parameters meets certain sound conditions. These certain sound conditions can be set by those skilled in the art according to actual circumstances, and this application does not impose specific limitations.

[0056] For example, in the embodiments of this application, when the engine is in a static state and placed in a noise-absorbing environment, different operating condition data are used to determine the current operating parameters of the engine through a pre-built intake and exhaust sound tuning parameter model, and the corresponding sound data is obtained. The sound data is analyzed to see if it meets certain sound conditions. If it does not meet the conditions, the corresponding adjustment value is generated until the certain sound conditions are met, thereby completing the intake and exhaust sound tuning work.

[0057] The working principle of the intake and exhaust tuning method for hybrid electric vehicles proposed in this application will be described below with reference to a specific embodiment.

[0058] in, Figure 2 This is a flowchart illustrating the working principle of an intake and exhaust tuning method for a hybrid electric vehicle according to an embodiment of this application.

[0059] like Figure 2 As shown, the working principle consists of four parts: parameterization of the engine operating curve for intake and exhaust tuning, construction of intake and exhaust tuning parameter model, preparation of tuning equipment, and intake and exhaust tuning in a static state.

[0060] Among them, the parameterization of the engine operating curves for intake and exhaust tuning includes: Step S201: Select the hybrid vehicle to be tested.

[0061] Step S202: Obtain test condition data under different intake and exhaust tuning conditions.

[0062] In this application embodiment, the test condition data may include, but is not limited to, the intake and exhaust valve opening, engine speed and torque curves, intake and exhaust back pressure, sound pressure level and spectrum distribution, etc. in the WOT condition; the intake and exhaust valve opening, speed and torque under partial load, intake and exhaust flow rate and velocity, noise level and harmonic components, etc. in the POT condition; the intake and exhaust valve opening, engine speed decay rate, intake and exhaust pulse interval, residual noise level, etc. in the coasting condition; the intake and exhaust valve opening, idle speed stability, intake and exhaust manifold temperature and pressure, idle noise level and spectrum, etc. in the idling condition; and the intake and exhaust valve opening, engine net power corresponding speed, intake and exhaust system vibration and displacement, acoustic transmission path analysis, etc. in the stationary condition. This application does not impose specific limitations.

[0063] Step S203: Parameterize the engine operating curves for intake and exhaust tuning to obtain the corresponding engine operating parameters.

[0064] In the embodiments of this application, the operating parameters may include, but are not limited to, engine power, speed, speed rise rate, etc., and this application does not impose specific limitations.

[0065] The construction of the intake and exhaust tuning parameter model includes: Step S204: Determine the input and output data of the model.

[0066] In this embodiment, the intake and exhaust valve opening, noise ratio, and intake and exhaust back pressure change rate in the test operating condition data can be used as input data for the intake and exhaust sound tuning parameter model, and the engine power, speed, and speed increase rate in the operating condition parameters can be used as output data for the intake and exhaust sound tuning parameter model.

[0067] Step S205: Construct an intake and exhaust tuning parameter model to obtain the initial operating parameters of the engine.

[0068] In this embodiment, the initial operating parameters of the engine can be obtained by using a pre-built intake and exhaust tuning parameter model.

[0069] Preparation of mixing equipment includes: Step S206: Battery capacity modification.

[0070] In this embodiment, the acceptance of generator output current can be increased. However, accepting the generator's output current limits the engine's power output. Adding an external power source or battery pack allows the engine's output power to be unrestricted even when the vehicle is stationary. A schematic diagram is shown below. Figure 3 As shown.

[0071] Step S207: Battery capacity release.

[0072] In particular, the embodiments of this application can optimize parameters such as battery pack temperature and SOC (State of Charge).

[0073] Intake and exhaust tuning in a stationary state includes: Step S208: Set up monitoring points.

[0074] In this embodiment, the corresponding monitoring point can be determined according to different intake and exhaust tuning conditions.

[0075] Step S209: Collect sound data of the hybrid vehicle under the corresponding intake and exhaust tuning conditions.

[0076] In this application embodiment, sound data of corresponding monitoring points can be obtained under different intake and exhaust sound tuning conditions.

[0077] Step S210: Generate sound data that meets certain sound conditions.

[0078] In this embodiment of the application, when the sound data does not meet certain sound conditions, an adjustment value for the engine can be generated and adjusted until sound data that meets certain sound conditions is obtained.

[0079] The intake and exhaust tuning method for hybrid electric vehicles proposed in this application first obtains the initial operating parameters of the engine in the intake and exhaust tuning conditions of the target hybrid electric vehicle. This allows for the determination of the current operating parameters of the engine in the corresponding intake and exhaust tuning conditions when the target hybrid electric vehicle is stationary. Adjustment values ​​for the engine are then generated based on the collected sound data until sound data meeting certain sound conditions is obtained. Tuning can be performed on any muffler, automating the tuning process, reducing human error, improving tuning accuracy, lowering equipment and labor costs, and shortening the development cycle. It allows the engine to operate at different continuous operating points while the vehicle is stationary, providing conditions for intake and exhaust tuning in a stationary state. It is compatible with multiple types of hybrid vehicles and supports personalized acoustic customization. This solves the technical problems in related technologies, such as the high operating cost and complex testing process of rotary drum muffler test chambers; and the frequent occurrence of operating condition breaks in hybrid electric vehicles due to the limitation of engine power by the coordinated control of the battery and motor, leading to distortion of intake and exhaust tuning data and significantly increasing development costs and time.

[0080] Next, referring to the accompanying drawings, we describe the intake and exhaust tuning device for a hybrid electric vehicle according to an embodiment of this application.

[0081] Figure 4 This is a block diagram of an intake and exhaust tuning device for a hybrid electric vehicle according to an embodiment of this application.

[0082] like Figure 4 As shown, the intake and exhaust tuning device 10 of the hybrid vehicle includes: a first acquisition module 100, a collection module 200, and a generation module 300.

[0083] The first acquisition module 100 is used to acquire the initial operating parameters of the engine of the target hybrid vehicle in at least one intake and exhaust tuning condition.

[0084] The acquisition module 200 is used to determine the current operating parameters of the engine of the target hybrid vehicle in the corresponding intake and exhaust tuning condition when it is stationary, based on the initial operating parameters, and to acquire the sound data of the target hybrid vehicle in the corresponding intake and exhaust tuning condition.

[0085] The generation module 300 is used to generate adjustment values ​​for the engine based on the sound data, and adjust the current operating parameters according to the adjustment values ​​until sound data that meets the preset sound conditions is obtained based on the adjusted operating parameters.

[0086] Optionally, in one embodiment of this application, the first acquisition module 100 includes: a first acquisition unit and a generation unit.

[0087] The first acquisition unit is used to acquire operating condition data for the corresponding intake and exhaust tuning conditions based on the target hybrid electric vehicle.

[0088] The generation unit is used to input operating condition data into a pre-built intake and exhaust tuning parameter model to obtain initial operating condition parameters.

[0089] Optionally, in one embodiment of this application, it further includes: a second acquisition module, a third acquisition module, and a construction module.

[0090] The second acquisition module is used to acquire test condition data for the corresponding intake and exhaust tuning conditions based on the test hybrid vehicle before acquiring the initial operating parameters of the engine of the target hybrid vehicle in at least one intake and exhaust tuning condition.

[0091] The third acquisition module is used to acquire the operating parameters of the engine in the test hybrid vehicle based on the test condition data.

[0092] The module is used to build intake and exhaust tuning parameter models based on operating parameters and test data.

[0093] Optionally, in one embodiment of this application, the construction module includes: a selection unit and a construction unit.

[0094] The selection unit is used to take the intake and exhaust valve opening, noise ratio, and intake and exhaust back pressure change rate from the test operating condition data as input data for the intake and exhaust sound tuning parameter model, and take the engine power, speed, and speed increase rate from the operating condition parameters as output data for the intake and exhaust sound tuning parameter model. Based on the input and output data, it selects the model structure and model parameters suitable for the intake and exhaust sound tuning parameter model.

[0095] The building unit is used to construct intake and exhaust tuning parameter models based on the model structure and model parameters.

[0096] Optionally, in one embodiment of this application, the acquisition module 200 includes: a detection unit and a first determination unit.

[0097] The detection unit is used to detect whether the output power in the current operating parameters is greater than a preset threshold.

[0098] The first determining unit is used to generate an engine compensation value based on the operating parameters of the generator in the target hybrid electric vehicle when the output power is detected to be greater than a preset threshold, and to determine the current operating parameters based on the compensation value and the output power.

[0099] Optionally, in one embodiment of this application, the acquisition module 200 includes: a second determining unit and a second acquiring unit.

[0100] The second determining unit is used to determine the monitoring points of sound data based on the corresponding intake and exhaust tuning conditions.

[0101] The second acquisition unit is used to acquire sound data based on the monitoring points.

[0102] It should be noted that the foregoing explanation of the intake and exhaust tuning method embodiment for hybrid electric vehicles also applies to the intake and exhaust tuning device for hybrid electric vehicles in this embodiment, and will not be repeated here.

[0103] The intake and exhaust tuning device for hybrid electric vehicles proposed in this application can first acquire the initial operating parameters of the engine of the target hybrid electric vehicle under intake and exhaust tuning conditions, thereby determining the current operating parameters of the engine of the target hybrid electric vehicle under the corresponding intake and exhaust tuning conditions when stationary. Based on the collected sound data, adjustment values ​​for the engine are generated until sound data meeting certain sound conditions is obtained. Tuning can be performed on any muffler, automating the tuning process, reducing human error, improving tuning accuracy, reducing equipment and labor costs, and shortening the R&D cycle. It allows the engine to operate at different continuous operating points while the vehicle is stationary, providing conditions for intake and exhaust tuning in a stationary state. It is compatible with multiple types of hybrid vehicles and supports personalized acoustic customization. This solves the technical problems in related technologies, such as the high operating cost and complex testing process of the rotary drum muffler test chamber; and the frequent occurrence of operating condition breaks in hybrid electric vehicles due to the limitation of engine power by the coordinated control of the battery and motor, leading to distortion of intake and exhaust tuning data and significantly increasing R&D costs and time.

[0104] Figure 5 This is a schematic diagram of the structure of an electronic device provided according to an embodiment of this application. The electronic device may include: The memory 501, the processor 502, and the computer program stored on the memory 501 and capable of running on the processor 502.

[0105] When the processor 502 executes the program, it implements the intake and exhaust tuning method for the hybrid vehicle provided in the above embodiments.

[0106] Furthermore, electronic devices also include: Communication interface 503 is used for communication between memory 501 and processor 502.

[0107] The memory 501 is used to store computer programs that can run on the processor 502.

[0108] Memory 501 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0109] If the memory 501, processor 502, and communication interface 503 are implemented independently, then the communication interface 503, memory 501, and processor 502 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. The bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 5 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.

[0110] Optionally, in a specific implementation, if the memory 501, processor 502, and communication interface 503 are integrated on a single chip, then the memory 501, processor 502, and communication interface 503 can communicate with each other through an internal interface.

[0111] Processor 502 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.

[0112] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method for tuning the intake and exhaust of a hybrid electric vehicle.

[0113] This application also provides a hybrid electric vehicle that includes the electronic devices described above.

[0114] This application also provides a computer program product, including a computer program that, when executed, implements the above-described method for adjusting the intake and exhaust of a hybrid electric vehicle.

[0115] 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.

[0116] 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.

[0117] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or 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.

[0118] 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). In addition, the computer-readable medium can even be paper or other suitable media on which the program can be printed, since the program can be obtained electronically by optically scanning the paper or other medium, followed by editing, interpreting or otherwise processing as necessary, and then stored in computer memory.

[0119] 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. If implemented in hardware, as in another embodiment, it can be implemented using any one or more 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.

[0120] Those skilled in the art will understand that all or part of the steps of the methods 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, the program includes one or a combination of the steps of the method embodiments.

[0121] 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.

[0122] 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 tuning the intake and exhaust systems of a hybrid electric vehicle, characterized in that, Includes the following steps: Obtain the initial operating parameters of the engine of the target hybrid electric vehicle under at least one intake and exhaust tuning condition; Based on the initial operating parameters, the current operating parameters of the engine of the target hybrid vehicle in the corresponding intake and exhaust sound tuning condition when stationary are determined, and the sound data of the target hybrid vehicle in the corresponding intake and exhaust sound tuning condition are collected. The engine adjustment value is generated based on the sound data, and the current operating parameters are adjusted according to the adjustment value until sound data that meets the preset sound conditions is obtained based on the adjusted operating parameters.

2. The method according to claim 1, characterized in that, The acquisition of the initial operating parameters of the engine of the target hybrid vehicle under at least one intake and exhaust tuning condition includes: Based on the target hybrid vehicle, obtain the operating condition data for the corresponding intake and exhaust tuning conditions; The operating condition data is input into a pre-built intake and exhaust tuning parameter model to obtain the initial operating condition parameters.

3. The method according to claim 2, characterized in that, Before obtaining the initial operating parameters of the engine of the target hybrid vehicle under at least one intake and exhaust tuning condition, the following steps are also included: Based on the test of hybrid electric vehicles, test condition data for corresponding intake and exhaust tuning conditions were obtained; Based on the test condition data, the operating parameters of the engine in the tested hybrid electric vehicle are obtained. Based on the operating parameters and the test data, the intake and exhaust tuning parameter model is constructed.

4. The method according to claim 3, characterized in that, The construction of the intake and exhaust tuning parameter model based on the operating parameters and the test data includes: The intake and exhaust valve opening, noise ratio, and intake and exhaust back pressure change rate in the test condition data are used as the input data of the intake and exhaust sound tuning parameter model. The engine power, speed, and speed increase rate in the operating parameters are used as the output data of the intake and exhaust sound tuning parameter model. Based on the input data and the output data, a model structure and model parameters suitable for the intake and exhaust sound tuning parameter model are selected. Based on the model structure and the model parameters, the intake and exhaust tuning parameter model is constructed.

5. The method according to claim 1, characterized in that, The determination of the current operating parameters of the engine of the target hybrid vehicle in the corresponding intake and exhaust tuning conditions when stationary includes: Detect whether the output power in the current operating parameters is greater than a preset threshold; If the output power is detected to be greater than the preset threshold, a compensation value for the engine is generated based on the operating parameters of the generator in the target hybrid vehicle, and the current operating parameters are determined based on the compensation value and the output power.

6. The method according to claim 1, characterized in that, The acquisition of sound data from the target hybrid vehicle under corresponding intake and exhaust tuning conditions includes: Based on the corresponding intake and exhaust tuning conditions, the monitoring points for the sound data are determined; The sound data is acquired based on the monitoring points.

7. An intake and exhaust tuning device for a hybrid electric vehicle, characterized in that, include: The first acquisition module is used to acquire the initial operating parameters of the engine of the target hybrid vehicle in at least one intake and exhaust tuning condition. The acquisition module is used to determine the current operating parameters of the engine of the target hybrid vehicle in the corresponding intake and exhaust sound tuning condition when the vehicle is stationary, based on the initial operating parameters, and to acquire the sound data of the target hybrid vehicle in the corresponding intake and exhaust sound tuning condition. The generation module is used to generate adjustment values ​​for the engine based on the sound data, and adjust the current operating parameters according to the adjustment values ​​until sound data that meets the preset sound conditions is obtained based on the adjusted operating parameters.

8. An electronic device, 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 program to implement the intake and exhaust tuning method for a hybrid electric vehicle as described in any one of claims 1-6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the intake and exhaust tuning method for a hybrid electric vehicle as described in any one of claims 1-6.

10. A hybrid electric vehicle, characterized in that, The hybrid vehicle includes the electronic equipment as described in claim 8.

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