Power vehicle, exhaust sound control method and device thereof and exhaust system

Abstract

The invention relates to a power vehicle, an exhaust sound control method and device thereof and an exhaust system. According to the method, after the power vehicle is started, the sound quality mode of the power vehicle is obtained, when the sound quality mode is a motion mode, the current gear, the current vehicle speed and the engine rotating speed of the power vehicle are obtained, and therefore whether the power vehicle meets the preset stable driving condition or non-stable driving condition or not is judged; if yes, an electromagnetic valve of an exhaust system in the power vehicle is controlled to be closed, the motion sound sensing quality of a first sound pressure level is provided, and if not, the electromagnetic valve is controlled to be opened, and the motion sound sensing quality of a second sound pressure level higher than the first sound pressure level is provided. According to the method, the motion state of the moving vehicle is judged according to information such as the gear, the vehicle speed and the engine rotating speed, the motion sound sensing quality of different sound pressure levels is selected, and the sound quality experience better matched with the vehicle is provided for a user.

Description

Technical Field

[0001] The present invention is applicable to the field of automobile exhaust silencing, and in particular relates to a power vehicle and an exhaust sound control method and device thereof, as well as an exhaust system. Background Art

[0002] As people's living standards improve, their requirements for vehicles have changed from a means of transportation to a comfortable household necessity. In addition to strict requirements on the power of the vehicle, there are also higher requirements for the sound quality of the vehicle. The exhaust system of the car is an important part of the car. The exhaust system discharges exhaust gas and also brings the combustion noise to the rear of the vehicle, generating high-sound pressure level order noise and friction noise at the rear. By reducing and compensating the exhaust noise to varying degrees, the exhaust can achieve different sound quality functions.

[0003] Some models on the market currently have one type of exhaust noise, and some have two optional sound quality modes. Vehicles with one type of noise have traditional exhaust system mufflers, and their muffler performance is not variable; vehicles with mufflers with two optional sound quality modes are generally silent mode and sports mode. They are equipped with electromagnetic valves on the tail pipe. When the speed reaches a certain value, the valve opens accordingly, or the opening and closing of the valve are controlled by a specific switch. Existing methods only control the valve opening through the engine speed signal, and the user experience is poor. Summary of the invention

[0004] In view of this, an embodiment of the present invention provides a power vehicle and an exhaust sound control method, device and exhaust system thereof to solve the problem of poor user experience when the engine speed control starts the sports mode.

[0005] In a first aspect, a method for controlling exhaust sound of a power vehicle is provided, comprising:

[0006] After the power vehicle is started, obtaining a sound quality mode of the power vehicle;

[0007] When the sound quality mode is the sports mode, the current gear position, current vehicle speed and engine speed of the power vehicle are obtained;

[0008] Determine whether the power vehicle meets the preset stable driving condition or unstable driving condition according to the current gear position, current vehicle speed and engine speed;

[0009] If the stable driving condition is met, the electromagnetic valve of the exhaust system in the power vehicle is controlled to be closed to provide a sporty sound quality of the first sound pressure level;

[0010] If the unstable driving condition is met, the solenoid valve of the exhaust system in the power vehicle is controlled to open to provide a sporty sound quality of a second sound pressure level, which is higher than the first sound pressure level.

[0011] In a second aspect, an exhaust sound control device for a power vehicle is provided, comprising:

[0012] A mode acquisition module, used to acquire the sound quality mode of the power vehicle after the power vehicle is started;

[0013] A sports information acquisition module, used to acquire the current gear position, current vehicle speed and engine speed of the power vehicle when the sound quality mode is the sports mode;

[0014] A driving condition judgment module is used to judge whether the power vehicle meets the preset stable driving condition or unstable driving condition according to the current gear position, current vehicle speed and engine speed;

[0015] A first sound quality providing module, for controlling the electromagnetic valve of the exhaust system in the power vehicle to close if a stable driving condition is met, so as to provide a sport sound quality of a first sound pressure level;

[0016] The second sound quality providing module is used to control the electromagnetic valve of the exhaust system in the power vehicle to open if the unstable driving condition is met, so as to provide a second sound pressure level of sporty sound quality, and the second sound pressure level is higher than the first sound pressure level.

[0017] In a third aspect, an embodiment of the present invention provides an exhaust system for a power vehicle, comprising:

[0018] A main pipeline, a first exhaust pipeline, and a second exhaust pipeline, wherein one end of the main pipeline is used to connect to the exhaust port of the engine of the power vehicle, and the other end of the main pipeline is connected to the first exhaust pipeline and the second exhaust pipeline respectively, and a solenoid valve is arranged on the second exhaust pipeline;

[0019] A vehicle control unit, the vehicle control unit is used to control the solenoid valve, and the exhaust sound control method of the power vehicle described in the first aspect.

[0020] In a fourth aspect, an embodiment of the present invention provides a power vehicle, namely, an exhaust system of the power vehicle described in the second aspect.

[0021] Compared with the prior art, the beneficial effect of the present invention is that compared with the prior art, which can only choose whether to open the electromagnetic valve on the tail pipe according to the engine speed, cannot match the vehicle speed, and cannot achieve the diversity of sound under different gears, the present invention determines the movement state of the moving vehicle according to the gear position, vehicle speed, engine speed and other information, selects the sports sound quality with a lower sound pressure level when it is judged to be a stable driving state, and selects the sports sound quality with a higher sound pressure level when it is judged to be an unstable driving state, thereby providing users with a sound quality experience that is better matched with the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is a flow chart of an exhaust sound control method of a power vehicle provided by one embodiment of the present invention;

[0024] Figure 2 It is a schematic structural diagram of an exhaust sound control device for a power vehicle provided by one embodiment of the present invention;

[0025] Figure 3 It is a schematic structural diagram of an exhaust system of a power vehicle provided by one embodiment of the present invention. DETAILED DESCRIPTION

[0026] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0027] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0028] It should also be understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0029] As used in the present specification and the appended claims, the term "if" may be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" may be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]", depending on the context.

[0030] In addition, in the description of the present specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0031] References to "one embodiment" or "some embodiments" etc. described in the present specification mean that one or more embodiments of the present invention include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0032] It should be understood that the order of execution of the steps in the following embodiments does not imply a precedence of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0033] In order to illustrate the technical solution of the present invention, specific embodiments are provided below for illustration.

[0034] See also Figure 1 , is a flow chart of an exhaust sound control method for a power vehicle provided by an embodiment of the present invention. The exhaust sound control method for a power vehicle may include the following steps:

[0035] Step S101, after the power vehicle is started, the sound quality mode of the power vehicle is obtained.

[0036] The sound quality modes include but are not limited to sports mode and silent mode. After the user starts the vehicle with the vehicle start button, the user can select the sound quality mode of the power vehicle according to the needs through the physical control switch or the screen virtual switch.

[0037] Step S102, when the sound quality mode is the sports mode, the current gear position, current vehicle speed and engine speed of the power vehicle are obtained.

[0038] In one embodiment, when the user selects the sound quality mode of the sports mode, the exhaust system starts to obtain vehicle information in real time, including the vehicle's gear, speed, and engine speed, to facilitate the next step.

[0039] Step S103, judging whether the power vehicle meets the preset stable driving condition or unstable driving condition according to the current gear position, the current vehicle speed and the engine speed.

[0040] In one embodiment, the user selects the sports sound quality mode when driving the vehicle and moves forward at a slow and steady speed on the road. The exhaust system obtains the gear position, vehicle speed and engine speed of the vehicle during driving and determines that the vehicle meets the stable driving conditions. When the vehicle does not meet the stable driving conditions, it is equivalent to meeting the unstable driving conditions.

[0041] Step S104: if the stable driving condition is met, the electromagnetic valve of the exhaust system in the power vehicle is controlled to be closed to provide a sporty sound quality of a first sound pressure level.

[0042] The solenoid valve of the exhaust system is a switch device capable of controlling the exhaust pipe, and the sporty sound quality of the first sound pressure level is a sporty sound with a lower sound pressure level than the second sound pressure level. In the above embodiment, the exhaust system determines that the vehicle meets the stable driving conditions, indicating that the vehicle is in a stable driving state, and a relatively low and stable sound pressure should be provided at this time, that is, the exhaust system controls the solenoid valve of the exhaust system in the power vehicle to be closed to provide the sporty sound quality of the first sound pressure level.

[0043] Step S105: if the unstable driving condition is met, the electromagnetic valve of the exhaust system in the power vehicle is controlled to open to provide a sporty sound quality of a second sound pressure level, where the second sound pressure level is higher than the first sound pressure level.

[0044] The second sound pressure level of the sporty sound quality is a higher sound pressure level of the sporty sound, that is, the second sound pressure level is higher than the first sound pressure level. In one embodiment, the exhaust system determines that the vehicle meets the unstable driving condition, indicating that the vehicle is in an unstable driving state of variable speed driving, and a higher sound pressure needs to be provided at this time, that is, the exhaust system controls the electromagnetic valve of the exhaust system in the power vehicle to open, so as to provide the second sound pressure level of the sporty sound quality.

[0045] The exhaust sound control method of this embodiment, after turning on the sports mode, determines whether the power vehicle meets the stable driving conditions based on the current gear, current vehicle speed and engine speed, thereby providing sports sound quality with different sound pressure levels, meeting the user's sound quality needs during driving, achieving diversity in sound quality under different driving conditions, and improving user experience.

[0046] In other embodiments, a method for controlling exhaust sound of a power vehicle is provided, in S103, the preset stable driving condition includes:

[0047] Step S20, the current gear is the forward gear, the current vehicle speed is greater than a preset normal driving speed threshold, and the engine speed is within a preset non-speed-changing speed range.

[0048] Among them, the current gear is the forward gear, which means that the vehicle is in a forward driving state, not reverse or neutral gear; the vehicle's current speed must exceed the preset minimum driving speed to ensure that the vehicle is driving in a stable state. This threshold value may vary for different vehicles or different situations; the engine speed must be within the set speed range, and cannot be lower than the lowest speed of the speed range, or higher than the highest speed of the speed range. When a moving vehicle meets the above conditions, it is judged to be in a stable driving state.

[0049] The exhaust sound control method of this embodiment requires that a sports vehicle should meet several factors under preset stable driving conditions, including gear position, vehicle speed and engine speed. The stable driving conditions are limited, and different situations during driving are classified and summarized. A lower sound pressure is set according to this specific stable condition, which can meet the user's sports mode experience needs under stable driving conditions.

[0050] In other embodiments, a method for controlling exhaust sound of a power vehicle is provided, in S103, the unstable driving condition includes:

[0051] Step S30: the current gear is a non-forward gear, or the current vehicle speed is not greater than a preset normal driving speed threshold, or the engine speed is not within a preset non-speed-changing speed range.

[0052] Specifically, when the moving vehicle meets any one of the conditions, it is determined to be in an unstable driving state. In one embodiment, the moving vehicle is in a forward gear, the vehicle speed is less than a preset normal driving speed threshold, and the engine speed is within a preset non-shifting speed range, and the vehicle is determined to be in an unstable driving state at this time.

[0053] The exhaust sound control method of this embodiment determines unstable driving conditions that include multiple situations. When the vehicle switches from one unstable driving state to another, a higher sound pressure is set according to the specific unstable driving condition of the switch, which can meet the user's sports mode experience needs in a variety of unstable driving states.

[0054] In other embodiments, a method for controlling exhaust sound of a power vehicle is provided, in any one of S20 and S30, the preset normal driving speed threshold value is in the range of 20-30 kilometers per hour.

[0055] In one embodiment, the preset normal driving speed threshold value is 23 kilometers per hour. When the vehicle speed is less than 23 kilometers per hour, the moving vehicle is judged to be in an unstable driving state; when the vehicle speed is greater than 23 kilometers per hour, it means that the moving vehicle meets one of the stable driving conditions: the current vehicle speed is greater than the preset normal driving speed threshold value, and it is still necessary to further judge whether it is in a stable driving state based on whether it is a forward gear and whether the engine speed is within the preset non-speed shifting speed range.

[0056] The exhaust sound control method of this embodiment sets a normal vehicle speed threshold value as a condition for judging whether it is stable driving. It takes into account the diversity of driving speeds during driving and provides better sporty sound quality according to different situations.

[0057] In other embodiments, a method for controlling exhaust sound of a power vehicle is provided, wherein in any one of S20 and S30, the preset non-speed-changing speed range is 1000-1500 revolutions per minute.

[0058] In one embodiment, the engine speed of the powered vehicle is 2200 rpm during driving, and it is determined that the vehicle is in an unstable driving condition. In another embodiment, the engine speed of the powered vehicle is 1300 rpm during driving, and the powered vehicle meets one of the stable driving conditions. However, the vehicle driving state still needs to be determined based on whether it is in a forward gear and whether the vehicle speed is greater than a preset normal driving speed threshold.

[0059] The exhaust sound control method of this embodiment sets the engine non-speed change speed range as a condition for judging whether it is stable driving. It takes into account the diversity of driving speeds during driving and provides better sporty sound quality according to different situations.

[0060] Corresponding to the method of the above embodiment, Figure 2 The structural block diagram of the exhaust sound control device of a power vehicle provided by an embodiment of the present invention is shown, and the exhaust sound control device of the power vehicle includes: a mode acquisition module 21, a motion information acquisition module 22, a driving condition judgment module 23, a first sense sound quality providing module 24, and a second sense sound quality providing module 25. The detailed description of each functional module is as follows:

[0061] The mode acquisition module 21 is used to acquire the sound quality mode of the power vehicle after the power vehicle is started;

[0062] The motion information acquisition module 22 is used to acquire the current gear position, current vehicle speed and engine speed of the power vehicle when the sound quality mode is the motion mode;

[0063] The driving condition judgment module 23 is used to judge whether the power vehicle meets the preset stable driving condition or unstable driving condition according to the current gear position, the current vehicle speed and the engine speed;

[0064] A first perceived sound quality providing module 24 is used to control the electromagnetic valve of the exhaust system in the power vehicle to close if the stable driving condition is met, so as to provide a first sound pressure level of perceived sport sound quality;

[0065] The second perceived sound quality providing module 25 is used to control the electromagnetic valve of the exhaust system in the power vehicle to open if the unstable driving condition is met, so as to provide a second sound pressure level of sporty perceived sound quality, the second sound pressure level being higher than the first sound pressure level.

[0066] Optionally, the driving condition judgment module includes:

[0067] The first condition setting unit is used when the current gear is a forward gear, the current vehicle speed is greater than a preset normal driving speed threshold value, and the engine speed is within a preset non-speed change speed range.

[0068] Optionally, the driving condition judgment module further includes:

[0069] The second condition setting unit is used when the current gear is a non-forward gear, or the current vehicle speed is not greater than a preset normal driving speed threshold, or the engine speed is not within a preset non-speed change speed range.

[0070] Optionally, in the first condition setting unit and / or the second condition setting unit, the preset normal driving speed threshold value is in the range of 20-30 kilometers per hour.

[0071] Optionally, in the first condition setting unit and / or the second condition setting unit, the preset non-speed-changing speed range is 1000-1500 revolutions per minute.

[0072] It should be noted that the information interaction, execution process and other contents between the above modules are based on the same concept as the embodiment of the method of the present invention. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0073] Figure 3 FIG. 1 is a schematic diagram of the structure of an exhaust system of a power vehicle provided by one embodiment of the present invention. Figure 3 As shown, the exhaust system of this embodiment includes: a main line 31, a first exhaust line 32, and a second exhaust line 33, wherein one end of the main line is used to connect to the exhaust port of the engine of the power vehicle, and the other end of the main line is respectively connected to the first exhaust line and the second exhaust line, and a solenoid valve is arranged on the second exhaust line.

[0074] The exhaust system may include, but is not limited to, a main exhaust line, a first exhaust line, and a second exhaust line. Those skilled in the art will appreciate that Figure 3 The exhaust system is merely an example and does not constitute a limitation of the exhaust system. The exhaust system may include more or fewer components than shown in the figure, or a combination of certain components, or different components.

[0075] The above-mentioned exhaust system also includes a processor for implementing any of the aforementioned exhaust sound control methods. The processor can be an ECU (electronic controller unit) or other vehicle control units. The processor must have the most basic structure - a microprocessor (CPU), a memory (ROM, RAM), an input / output interface (I / O), an analog-to-digital converter (A / D), and large-scale integrated circuits such as shaping and driving.

[0076] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be distributed to different functional units and modules as needed, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. The specific names of the functional units and modules are only for the convenience of distinguishing each other and are not used to limit the scope of protection of the present invention.

[0077] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0078] Those skilled in the art will appreciate that the units and steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in different ways, and the specific implementation method depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0079] In the embodiments provided by the present invention, it should be understood that the disclosed exhaust device / system and method can be implemented in other ways. For example, the exhaust device / system embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0080] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A method for controlling exhaust sound of a power vehicle, characterized in that: The exhaust sound control method of the power vehicle comprises: After the power vehicle is started, obtaining a sound quality mode of the power vehicle; When the sound quality mode is the sports mode, obtaining the current gear position, current vehicle speed and engine speed of the power vehicle; Determining whether the power vehicle meets a preset stable driving condition or unstable driving condition according to the current gear position, current vehicle speed and engine speed; If the stable driving condition is met, controlling the electromagnetic valve of the exhaust system in the power vehicle to close, so as to provide a sporty sound quality of a first sound pressure level; If the unstable driving condition is met, the solenoid valve of the exhaust system in the power vehicle is controlled to open to provide a sporty sound quality of a second sound pressure level, wherein the second sound pressure level is higher than the first sound pressure level.

2. The exhaust sound control method of a power vehicle according to claim 1, characterized in that: The preset stable driving conditions include: The current gear is a forward gear, the current vehicle speed is greater than a preset normal driving speed threshold, and the engine speed is within a preset non-speed-changing speed range.

3. The exhaust sound control method of a power vehicle according to claim 1, characterized in that: The unstable driving conditions are: The current gear is a non-forward gear, or the current vehicle speed is not greater than a preset normal driving speed threshold, or the engine speed is not within a preset non-speed-changing speed range.

4. The exhaust sound control method of a power vehicle according to any one of claims 2 and 3, characterized in that: The preset normal driving speed threshold value is in the range of 20-30 kilometers per hour.

5. The exhaust sound control method of a power vehicle according to any one of claims 2 and 3, characterized in that: The preset non-variable speed range is 1000-1500 revolutions per minute.

6. An exhaust sound control device for a power vehicle, characterized in that: The exhaust sound control device of the power vehicle comprises: A mode acquisition module, used to acquire the sound quality mode of the power vehicle after the power vehicle is started; A sports information acquisition module, used for acquiring the current gear position, current vehicle speed and engine speed of the power vehicle when the sound quality mode is the sports mode; A driving condition judgment module, used to judge whether the power vehicle meets a preset stable driving condition or unstable driving condition according to the current gear position, current vehicle speed and engine speed; A first perceived sound quality providing module, configured to control the electromagnetic valve of the exhaust system in the power vehicle to close if the stable driving condition is met, so as to provide a sporty perceived sound quality of a first sound pressure level; The second perceived sound quality providing module is used to control the electromagnetic valve of the exhaust system in the power vehicle to open if the unstable driving condition is met, so as to provide a second sound pressure level of sporty perceived sound quality, wherein the second sound pressure level is higher than the first sound pressure level.

7. The driving condition determination module according to claim 6, characterized in that: The stable driving conditions include: The first condition setting unit is used when the current gear is a forward gear, the current vehicle speed is greater than a preset normal driving speed threshold, and the engine speed is within a preset non-speed-changing speed range.

8. The driving condition determination module according to claim 6, characterized in that: The unstable driving conditions include: The second condition setting unit is used when the current gear is a non-forward gear, or the current vehicle speed is not greater than a preset normal driving speed threshold, or the engine speed is not within a preset non-speed change speed range.

9. An exhaust system for a power vehicle, comprising: A main pipeline, a first exhaust pipeline, and a second exhaust pipeline, wherein one end of the main pipeline is used to connect to the exhaust port of the engine of the power vehicle, and the other end of the main pipeline is connected to the first exhaust pipeline and the second exhaust pipeline respectively, and a solenoid valve is provided on the second exhaust pipeline; A vehicle control unit, the vehicle control unit is used to control the solenoid valve to implement the exhaust sound control method of a power vehicle as described in any one of claims 1 to 5.

10. A power vehicle, characterized in that: An exhaust system for a powered vehicle comprising the exhaust system of claim 9.

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