Engine noise control method and device for hybrid vehicle

Abstract

The invention relates to the technical field of hybrid vehicles, in particular to an engine noise control method and device for a hybrid vehicle, and the method comprises the steps: obtaining a current navigation route of the vehicle, confirming at least one expected driving mode of the vehicle and a target expected value of the charge quantity of a battery under the condition that the vehicle is detected to enter a hybrid noise reduction mode, and controlling the engine to charge the vehicle based on the engine noise reduction working interval corresponding to the at least one expected driving mode and the target expected value, so that the engine meets a preset noise reduction condition until the vehicle exits the hybrid power noise reduction mode. According to the embodiment of the invention, the electric quantity required by the battery to complete the journey can be determined by combining different driving modes corresponding to the target driving route with map navigation, so that the power battery is charged to the target expected value in advance at a relatively low engine rotating speed, and the probability that the engine enters a high rotating speed is reduced; therefore, the radiation noise of the engine in the running process of the vehicle is reduced, and the comfort of the vehicle is improved.

Description

Technical Field

[0001] The present application relates to the technical field of hybrid vehicles, and in particular to a method and device for controlling engine noise of a hybrid vehicle. Background Art

[0002] With the increasing popularity of hybrid vehicles, users have an increasing demand for driving comfort of hybrid vehicles. When the battery power of the vehicle is lower than the charge value specified by the battery power balance point, the engine will be started to assist the vehicle to charge the battery. In related technologies, the driving mode can be divided into city mode, high-speed mode, mountain mode, etc. by means of mode differentiation. In different driving modes, different engine working ranges are used to control the engine speed to provide passengers with better power.

[0003] However, in the related technology, when the engine is controlled in different working ranges according to the driving mode, a large radiation noise will be generated when the engine is working in a high speed area, which affects the driving comfort of the vehicle, reduces the user experience, and cannot achieve effective management of fuel consumption and power. The practicality is insufficient and needs to be solved urgently. Summary of the invention

[0004] The present application provides a method and device for controlling engine noise of a hybrid vehicle to solve the problems in the related art that, when the engine is controlled in different working ranges according to the driving mode, a large radiation noise will be generated when the engine is working in a high speed area, which affects the driving comfort of the vehicle, reduces the user experience, and cannot achieve effective management of fuel consumption and power, and is insufficient in practicality.

[0005] A first aspect of the present application provides an engine noise control method for a hybrid vehicle, comprising the following steps: upon detecting that the vehicle has entered a hybrid noise reduction mode, obtaining a current navigation route of the vehicle; confirming at least one expected driving mode of the vehicle and a target expected value of a battery charge based on the current navigation route; and controlling the engine to charge the vehicle based on an engine noise reduction operating range corresponding to the at least one expected driving mode and the target expected value, so that the engine meets a preset noise reduction condition until the vehicle exits the hybrid noise reduction mode.

[0006] Optionally, in one embodiment of the present application, controlling the engine to charge the vehicle based on the engine noise reduction working range corresponding to the at least one expected driving mode and the target expected value includes: calculating a target charging time of the current navigation route based on the engine noise reduction working range and the target expected value; and controlling the engine to charge based on the target charging time.

[0007] Optionally, in one embodiment of the present application, the target charging time of the current navigation route is calculated based on the engine noise reduction working range and the target expected value, including: when at least one expected driving mode is the preset city mode and / or the preset highway mode, confirming the first preset engine noise reduction working range corresponding to the preset city mode and / or the second preset engine noise reduction working range corresponding to the preset highway mode; based on the first preset engine noise reduction working range and / or the second preset engine noise reduction working range, calculating the target charging time.

[0008] Optionally, in one embodiment of the present application, confirming at least one expected driving mode of the vehicle and a target expected value of the battery charge based on the current navigation route includes: when the preset mountain mode exists in the at least one expected driving mode, calculating the target climbing expected value of the battery charge based on a third preset engine noise reduction working range corresponding to the preset mountain mode; calculating a target climbing increment value based on the target climbing expected value and the current charge of the vehicle, and obtaining the target expected value according to the target climbing increment value.

[0009] Optionally, in one embodiment of the present application, before acquiring the current navigation route of the vehicle, it includes: determining whether the map navigation, battery charge management and driving mode control of the vehicle meet preset function association conditions; if the map navigation, the battery charge management and the driving mode control meet the preset function association conditions, then collecting the current navigation route, otherwise, exiting the hybrid noise reduction mode.

[0010] A second aspect of the present application provides an engine noise control device for a hybrid vehicle, comprising: an acquisition module, for acquiring a current navigation route of the vehicle when it is detected that the vehicle enters a hybrid noise reduction mode; a confirmation module, for confirming at least one expected driving mode of the vehicle and a target expected value of a battery charge based on the current navigation route; and a control module, for controlling the engine to charge the vehicle based on the engine noise reduction working range corresponding to the at least one expected driving mode and the target expected value, so that the engine meets a preset noise reduction condition until the vehicle exits the hybrid noise reduction mode.

[0011] Optionally, in one embodiment of the present application, the control module includes: a first calculation unit, used to calculate the target charging time of the current navigation route based on the engine noise reduction working range and the target expected value; a control unit, used to control the engine to charge based on the target charging time.

[0012] Optionally, in one embodiment of the present application, the first calculation unit is specifically used to: when the at least one expected driving mode is the preset city mode and / or the preset highway mode, confirm the first preset engine noise reduction working range corresponding to the preset city mode and / or the second preset engine noise reduction working range corresponding to the preset highway mode; based on the first preset engine noise reduction working range and / or the second preset engine noise reduction working range, calculate the target charging time.

[0013] Optionally, in one embodiment of the present application, the confirmation module includes: a second calculation unit, used to calculate the target climbing expected value of the battery charge based on a third preset engine noise reduction working range corresponding to the preset mountain mode when the preset mountain mode exists in at least one of the expected driving modes; a third calculation unit, used to calculate a target climbing increment value based on the target climbing expected value and the current charge of the vehicle, and obtain the target expected value according to the target climbing increment value.

[0014] Optionally, in one embodiment of the present application, the acquisition module includes: a judgment unit, used to judge whether the map navigation, battery charge management and driving mode control of the vehicle meet preset function association conditions before acquiring the current navigation route of the vehicle; an exit unit, used to collect the current navigation route when the map navigation, the battery charge management and the driving mode control meet the preset function association conditions, otherwise, exit the hybrid noise reduction mode.

[0015] A third aspect of the present application provides a vehicle, comprising: 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 noise control method for a hybrid vehicle as described in the above embodiment.

[0016] A fourth aspect of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, which, when executed by a processor, implements the above-mentioned engine noise control method for a hybrid vehicle.

[0017] A fifth aspect of the present application provides a computer program, which, when executed, implements the above-mentioned method for controlling engine noise of a hybrid vehicle.

[0018] The embodiment of the present application uses different driving modes corresponding to the target driving route in combination with map navigation to confirm the amount of electricity required for the battery to complete the journey, thereby charging the power battery to the target expected value in advance at a lower engine speed, reducing the probability of the engine entering a high speed, thereby reducing the engine radiation noise during vehicle driving and improving the comfort of the vehicle. This solves the problem in the related art that when the engine is controlled in different working ranges according to the driving mode, a large radiation noise will be generated when the engine is working in a high speed area, affecting the comfort of vehicle driving, reducing the user's experience, and failing to achieve effective management of fuel consumption and electricity, and lack of practicality.

[0019] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0021] Figure 1 A flowchart of an engine noise control method for a hybrid vehicle provided according to an embodiment of the present application;

[0022] Figure 2 A schematic diagram of a noise control process in a mountain driving mode according to an embodiment of the present application;

[0023] Figure 3 This is a schematic diagram of an engine noise control process based on different driving modes according to an embodiment of the present application;

[0024] Figure 4 A schematic diagram of a noise test under a battery SOC 15.0% starting point climbing condition according to an embodiment of the present application;

[0025] Figure 5 A schematic diagram of a noise test under a battery SOC 27.2% starting point climbing condition according to an embodiment of the present application;

[0026] Figure 6 is a schematic structural diagram of an engine noise control device for a hybrid vehicle according to an embodiment of the present application;

[0027] Figure 7 It is a schematic diagram of the structure of a vehicle according to an embodiment of the present application. DETAILED DESCRIPTION

[0028] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0029] The following describes the engine noise control method and device of the hybrid vehicle of the embodiment of the present application with reference to the accompanying drawings. In view of the related art mentioned in the above background technology, when the engine is controlled in different working ranges according to the driving mode, when the engine is working in the high speed area, a large radiation noise will be generated, which affects the driving comfort of the vehicle, reduces the user experience, and cannot achieve effective management of fuel consumption and power, and the problem of insufficient practicality, the present application provides an engine noise control method for a hybrid vehicle, in which the power required for the battery to complete the journey is confirmed by combining different driving modes corresponding to the target driving route with map navigation, so as to charge the power battery to the target expected value in advance at a lower engine speed, reduce the probability of the engine entering a high speed, and thus reduce the engine radiation noise during the vehicle driving process, and improve the comfort of the vehicle. Thus, the problem that in the related art, when the engine is controlled in different working ranges according to the driving mode, when the engine is working in the high speed area, a large radiation noise will be generated, which affects the driving comfort of the vehicle, reduces the user experience, and cannot achieve effective management of fuel consumption and power, and the problem of insufficient practicality is solved.

[0030] Specifically, Figure 1 A schematic flow chart of a method for controlling engine noise of a hybrid vehicle provided in an embodiment of the present application.

[0031] like Figure 1 As shown, the engine noise control method of the hybrid vehicle includes the following steps:

[0032] In step S101, when it is detected that the vehicle enters the hybrid noise reduction mode, the current navigation route of the vehicle is obtained.

[0033] It can be understood that in the embodiments of the present application, the hybrid noise reduction mode may be a functional mode for reducing engine noise of a hybrid vehicle during driving, which can optimize the noise and vibration control of the vehicle, and the navigation route may be a route in the vehicle navigation system from the current location to the destination set by the user.

[0034] Optionally, in one embodiment of the present application, before obtaining the current navigation route of the vehicle, it includes: determining whether the vehicle's map navigation, battery charge management and driving mode control meet preset function association conditions; if the map navigation, battery charge management and driving mode control meet the preset function association conditions, then collecting the current navigation route, otherwise, exiting the hybrid noise reduction mode.

[0035] It should be noted that the preset function association conditions can be set by those skilled in the art according to actual conditions and are not specifically limited here.

[0036] During the actual implementation process, map navigation may be the navigation function of the vehicle, battery charge management may be the power management of the battery system in a hybrid vehicle, driving mode control may be the switching and operation control of different driving modes of the vehicle, and the preset function association conditions need to satisfy the mutual association between the vehicle map, battery charge and driving mode, so that the vehicle system can manage the battery charge according to the travel route set by the user in the navigation function, and automatically switch the driving mode according to the navigation route.

[0037] In step S102 , at least one expected driving mode of the vehicle and a target expected value of the battery charge amount are confirmed based on the current navigation route.

[0038] It can be understood that in an embodiment of the present application, the expected driving mode may be the driving mode expected by the vehicle system according to the current navigation route and driving conditions, and the target expected value of the battery charge may be the minimum charge level that the battery system needs to reach for the vehicle to complete the navigation route.

[0039] Specifically, the expected driving modes can be divided into city mode, high-speed mode, and mountain mode. In the city mode, the road conditions are relatively gentle, without shaking, etc. At this time, the battery discharge is relatively gentle, and the engine speed is maintained between 1500rpm-2000rpm to meet the battery power balance and the battery SOC is maintained at a reasonable level, thereby meeting the driving needs of passengers; the high-speed mode has relatively gentle road conditions, without shaking, etc., but high-speed driving is required, and the battery discharge is relatively fast. The engine speed is maintained between 2000rpm-3000rpm to meet the battery power balance and maintain the battery SOC at a reasonable level, thereby meeting the driving needs of passengers; the mountain mode has relatively more slopes, and the battery discharges relatively quickly. The engine speed is maintained at 3000rpm-4500rpm, which can increase the battery charging speed and increase the battery SOC, thereby meeting the driving needs of passengers such as climbing.

[0040] Optionally, in one embodiment of the present application, at least one expected driving mode of the vehicle and a target expected value of the battery charge are confirmed based on the current navigation route, including: when there is a preset mountain mode in at least one expected driving mode, a target climbing expected value of the battery charge is calculated based on a third preset engine noise reduction working range corresponding to the preset mountain mode; a target climbing increment value is calculated based on the target climbing expected value and the current charge of the vehicle, and the target expected value is obtained according to the target climbing increment value.

[0041] It should be noted that the preset mountain mode and the third preset engine noise reduction working range can be set by those skilled in the art according to actual conditions and are not specifically limited here.

[0042] During actual implementation, the preset mountain mode may be a driving mode designed for mountain driving. Because the road conditions in the mountain mode are relatively more sloped and the battery discharges relatively quickly, the third preset engine noise reduction working range corresponding to the preset mountain mode may be specified to be between 3000rpm-4500rpm, so that when the engine operates within this specific speed range, the engine is in an area with a lower noise level.

[0043] For example, Figure 2 As shown, if the passenger's navigation route is city + mountain, highway + mountain, city + highway + mountain, mountain, etc., which includes preset mountain modes, the mountain road conditions have higher requirements on the battery SOC. In order to ensure that the vehicle reaches the foot of the mountain, it is necessary to ensure that the battery has sufficient power to climb the mountain before climbing. At the same time, ensure that the engine speed operates between 1500rpm-3000rpm, that is, while ensuring that the power requirements for climbing are met, keep the engine speed low, thereby reducing the engine radiation noise and improving the driving comfort of passengers.

[0044] For example, Figure 2 FIG. 1 is a schematic diagram of a noise control process in a mountain driving mode according to an embodiment of the present application, including:

[0045] Step S201: The vehicle starts.

[0046] Among them, the vehicle starts noise control control.

[0047] Step S202: Associating the vehicle map, battery SOC, and driving mode.

[0048] Among them, map navigation, battery charge management and driving mode control functions are related.

[0049] Step S203: The passenger uses the on-board map for route navigation.

[0050] Among them, when passengers drive the vehicle, they use the car map for navigation.

[0051] Step S204: Automatically switch the driving mode according to the navigation route.

[0052] Among them, the vehicle system automatically switches the driving mode according to the navigation route, using the urban mode for urban roads and the highway mode for highways.

[0053] Step S205: Calculate the battery power P2 required for mountain climbing.

[0054] Among them, the vehicle system calculates the battery power P2 required for climbing a mountain (from the foot of the mountain to the top of the mountain) according to the navigation route (this power is calculated based on the preset engine noise reduction working range of 1500rpm-3000rpm when the engine is climbing the mountain).

[0055] Step S206: Calculate the power increment P4 required to reach the foot of the mountain based on the current power P3.

[0056] Among them, the vehicle system calculates the power increment P4 required to reach the foot of the mountain based on the current power P3, where P2=P3+P4.

[0057] Step S207: According to P4, start the engine in advance to charge the battery.

[0058] Among them, the vehicle system starts the engine in advance according to P4 to charge the battery (the engine operating range in urban mode is 1500rpm-2000rpm; the engine operating range in high-speed mode is 2000rpm-3000rpm).

[0059] In step S103, the engine is controlled to charge the vehicle based on the engine noise reduction working range and the target expected value corresponding to at least one expected driving mode, so that the engine meets the preset noise reduction condition until the vehicle exits the hybrid noise reduction mode.

[0060] It should be noted that the preset noise reduction conditions can be set by those skilled in the art according to actual conditions and are not specifically limited here.

[0061] It is understandable that in the embodiment of the present application, the engine noise reduction working range can be a speed range with a low noise level when the engine works within a specific speed range under the working requirements of different driving modes. According to the range specified in the engine noise reduction working range, the vehicle is charged in advance with the target expected value as the charging target, so that the noise generated by the engine meets the preset noise reduction conditions, that is, the engine noise is within the specified user comfort range.

[0062] Optionally, in one embodiment of the present application, the engine is controlled to charge the vehicle based on the engine noise reduction working range and the target expected value corresponding to at least one expected driving mode, including: calculating the target charging time of the current navigation route based on the engine noise reduction working range and the target expected value; and controlling the engine to charge based on the target charging time.

[0063] In the actual execution process, based on the engine noise reduction working range and the target expected value, the total time required to charge the battery in the current navigation route is calculated. Considering the different sections of the navigation route (such as flat roads, climbing, curves, etc.), the charging time needs to be further subdivided under different driving conditions, so as to control the engine to operate within the noise reduction working range according to the calculated target charging time, and charge the battery in advance. At the same time, during the actual driving process, the charging strategy is dynamically adjusted according to the actual road conditions and changes in the battery charge.

[0064] Optionally, in one embodiment of the present application, the target charging time of the current navigation route is calculated based on the engine noise reduction working range and the target expected value, including: when at least one expected driving mode is a preset city mode and / or a preset highway mode, confirming a first preset engine noise reduction working range corresponding to the preset city mode and / or a second preset engine noise reduction working range corresponding to the preset highway mode; based on the first preset engine noise reduction working range and / or the second preset engine noise reduction working range, calculating the target charging time.

[0065] It should be noted that the preset city mode, the preset highway mode, the first preset engine noise reduction working range and the second preset engine noise reduction working range can be set by those skilled in the art according to actual conditions and are not specifically limited here.

[0066] In actual implementation, the preset city mode may be a driving mode designed for urban road conditions. Since the road conditions in the city mode are relatively smooth and the battery SOC requirement is relatively low, the first preset engine noise reduction working range corresponding to the preset city mode may be specified to be between 1500rpm-2000rpm, so that when the engine is working in this specific speed range, the engine is in a low noise level area. The preset high-speed mode may be a driving mode designed for high-speed driving. Since the preset high-speed mode is relatively fast, the battery SOC requirement is increased. The second preset engine noise reduction working range corresponding to the preset high-speed mode may be specified to be between 2000rpm-3000rpm, so that when the engine is working in this specific speed range, the engine is in a low noise level area.

[0067] Specifically, if the passenger's navigation route includes city, city + highway, highway and other driving modes, the vehicle's requirements for the battery SOC are relatively low. The vehicle can dynamically manage the battery SOC according to the passenger's navigation route and charge the battery in real time according to the driving distance to ensure that under urban road conditions, the engine maintains running between 1500rpm-2000rpm for charging, and under highway conditions, the engine maintains running between 2000rpm-3000rpm for charging.

[0068] For example, Figure 3 FIG. 1 is a schematic diagram of an engine noise control process based on different driving modes according to an embodiment of the present application, including:

[0069] Step S301: The vehicle starts.

[0070] Among them, the vehicle starts noise control control.

[0071] Step S302: Associating the vehicle map, battery SOC, and driving mode.

[0072] Among them, map navigation, battery charge management and driving mode control functions are related.

[0073] Step S303: The passenger uses the on-board map for route navigation.

[0074] Among them, when passengers drive the vehicle, they use the car map for navigation.

[0075] Step S304: Automatically switch the driving mode according to the navigation route.

[0076] Among them, the vehicle system automatically switches the driving mode according to the navigation route, using the urban mode for urban roads and the highway mode for highways.

[0077] Step S305: Calculate the minimum battery SOC value P1 required for the remaining distance according to the navigation route.

[0078] Among them, the vehicle system calculates the remaining distance based on the navigation route, which requires the battery SOC minimum value P1.

[0079] Step S306: According to P1, start the engine in advance to charge the battery.

[0080] Among them, the vehicle system starts the engine in advance according to P1 to charge the battery (the engine operating range in urban mode is 1500rpm-2000rpm; the engine operating range in high-speed mode is 2000rpm-3000rpm).

[0081] The following is a detailed description of the working content of the embodiment of the present application using a specific embodiment. An example comparison of the same vehicle climbing a mountain road under different SOC modes is performed. The entire mountain road climbing distance is 15km, and the noise test is performed on the entire journey. Among them, the climbing starts with a battery SOC of 15.0%, the end battery SOC is 7.0%, the engine speed operating range is 1700rpm-4200rpm, the overall average noise of the front row of the vehicle is 56.8dB, and the overall average noise of the rear row is 55.9dB. Figure 4 .

[0082] For example, starting from the battery SOC 27.2% to climb the slope, the end battery SOC is 15.5%, the engine speed operation range is 1500rpm-2600rpm, the overall average noise of the front row of the vehicle is 47.8dB, and the overall average noise of the rear row is 48.8dB. Figure 5 .

[0083] By comparison, it can be concluded that the engine speed and vehicle noise vary greatly when climbing a mountain road under different battery SOCs. When the battery SOC meets the mountain road driving distance, the front noise of the vehicle can be reduced by an average of 9dB, and the rear noise can be reduced by an average of 7.1dB, and the noise reduction effect is significantly improved compared to when the battery SOC is low and the mountain road driving distance is not met.

[0084] According to the engine noise control method of a hybrid vehicle proposed in the embodiment of the present application, the amount of electricity required for the battery to complete the journey is confirmed by combining different driving modes corresponding to the target driving route with map navigation, so that the power battery is charged to the target expected value at a lower engine speed in advance, reducing the probability of the engine entering a high speed, thereby reducing the engine radiation noise during vehicle driving and improving the comfort of the vehicle. Thus, the problem in the related art that when the engine is controlled in different working ranges according to the driving mode, a large radiation noise will be generated when the engine is working in a high speed area, affecting the comfort of vehicle driving, reducing the user's experience, and failing to achieve effective management of fuel consumption and electricity, and insufficient practicality is solved.

[0085] Next, the engine noise control device of a hybrid vehicle proposed in accordance with an embodiment of the present application will be described with reference to the accompanying drawings.

[0086] Figure 6 It is a schematic diagram of the structure of the engine noise control device of the hybrid vehicle according to an embodiment of the present application.

[0087] like Figure 6 As shown, the engine noise control device 10 of the hybrid vehicle includes: an acquisition module 100 , a confirmation module 200 and a control module 300 .

[0088] The acquisition module 100 is used to acquire the current navigation route of the vehicle when it is detected that the vehicle enters the hybrid noise reduction mode.

[0089] The confirmation module 200 is used to confirm at least one expected driving mode of the vehicle and a target expected value of the battery charge amount based on the current navigation route.

[0090] The control module 300 is used to control the engine to charge the vehicle based on the engine noise reduction working range and the target expected value corresponding to at least one expected driving mode, so that the engine meets the preset noise reduction conditions until the vehicle exits the hybrid noise reduction mode.

[0091] Optionally, in one embodiment of the present application, the control module 300 includes: a first calculation unit and a control unit.

[0092] Among them, the first calculation unit is used to calculate the target charging time of the current navigation route based on the engine noise reduction working range and the target expected value.

[0093] A control unit is used to control the engine to charge based on a target charging time.

[0094] Optionally, in one embodiment of the present application, the first computing unit is specifically configured to:

[0095] In a case where at least one expected driving mode is a preset city mode and / or a preset highway mode, confirming a first preset engine noise reduction operating interval corresponding to the preset city mode and / or a second preset engine noise reduction operating interval corresponding to the preset highway mode;

[0096] The target charging duration is calculated based on the first preset engine noise reduction operating interval and / or the second preset engine noise reduction operating interval.

[0097] Optionally, in one embodiment of the present application, the confirmation module 200 includes: a second calculation unit and a third calculation unit.

[0098] Among them, the second calculation unit is used to calculate the target climbing expected value of the battery charge based on the third preset engine noise reduction working range corresponding to the preset mountain mode when there is a preset mountain mode in at least one expected driving mode.

[0099] The third calculation unit is used to calculate a target climbing increment value based on the target climbing expected value and the current charge of the vehicle, and obtain a target expected value according to the target climbing increment value.

[0100] Optionally, in one embodiment of the present application, the acquisition module 100 includes: a judgment unit and an exit unit.

[0101] Among them, the judgment unit is used to judge whether the vehicle's map navigation, battery charge management and driving mode control meet preset function association conditions before obtaining the vehicle's current navigation route.

[0102] The exit unit is used to collect the current navigation route when the map navigation, battery charge management and driving mode control meet the preset function association conditions, otherwise, exit the hybrid noise reduction mode.

[0103] It should be noted that the above explanation of the embodiment of the engine noise control method for a hybrid vehicle is also applicable to the engine noise control device for a hybrid vehicle of this embodiment, and will not be repeated here.

[0104] According to the engine noise control device for hybrid vehicles proposed in the embodiment of the present application, the amount of electricity required for the battery to complete the journey is confirmed by combining different driving modes corresponding to the target driving route with map navigation, so that the power battery is charged to the target expected value at a lower engine speed in advance, reducing the probability of the engine entering a high speed, thereby reducing the engine radiation noise during vehicle driving and improving the comfort of the vehicle. Thus, the problem in the related art that when the engine is controlled in different working ranges according to the driving mode, a large radiation noise will be generated when the engine is working in a high speed area, affecting the comfort of vehicle driving, reducing the user's experience, and failing to achieve effective management of fuel consumption and electricity, and insufficient practicality is solved.

[0105] Figure 7 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application. The vehicle may include:

[0106] A memory 701 , a processor 702 , and a computer program stored in the memory 701 and executable on the processor 702 .

[0107] When the processor 702 executes the program, the engine noise control method for the hybrid vehicle provided in the above embodiment is implemented.

[0108] Furthermore, the vehicle also includes:

[0109] The communication interface 703 is used for communication between the memory 701 and the processor 702 .

[0110] The memory 701 is used to store computer programs that can be executed on the processor 702 .

[0111] The memory 701 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0112] If the memory 701, the processor 702 and the communication interface 703 are implemented independently, the communication interface 703, the memory 701 and the processor 702 can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 7 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0113] Optionally, in a specific implementation, if the memory 701, the processor 702 and the communication interface 703 are integrated on a chip, the memory 701, the processor 702 and the communication interface 703 can communicate with each other through an internal interface.

[0114] The processor 702 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0115] This embodiment also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the above-mentioned engine noise control method for a hybrid vehicle is implemented.

[0116] This embodiment also provides a computer program, which implements the above-mentioned engine noise control method for a hybrid vehicle when the computer program is executed.

[0117] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0118] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0119] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or N executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0120] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or N wirings (electronic devices), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways as necessary and then storing it in a computer memory.

[0121] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0122] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0123] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0124] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A method for controlling engine noise of a hybrid vehicle, characterized in that: The following steps are involved: When detecting that the vehicle enters the hybrid noise reduction mode, obtaining a current navigation route of the vehicle; confirming at least one expected driving mode and a target desired value of a battery charge level of the vehicle based on the current navigation route; Based on the engine noise reduction working range corresponding to the at least one expected driving mode and the target expected value, the engine is controlled to charge the vehicle so that the engine meets a preset noise reduction condition until the vehicle exits the hybrid noise reduction mode.

2. The method according to claim 1, characterized in that The controlling the engine to charge the vehicle based on the engine noise reduction working range corresponding to the at least one expected driving mode and the target expected value includes: Calculating a target charging time for the current navigation route based on the engine noise reduction working range and the target expected value; The engine is controlled to charge based on the target charging duration.

3. The method according to claim 2, characterized in that The calculating the target charging time of the current navigation route based on the engine noise reduction working range and the target expected value includes: In a case where the at least one expected driving mode is the preset city mode and / or the preset highway mode, confirming a first preset engine noise reduction operating interval corresponding to the preset city mode and / or a second preset engine noise reduction operating interval corresponding to the preset highway mode; The target charging duration is calculated based on the first preset engine noise reduction working interval and / or the second preset engine noise reduction working interval.

4. The method according to claim 1, characterized in that The determining, based on the current navigation route, at least one expected driving mode of the vehicle and a target expected value of a battery charge amount includes: When the at least one expected driving mode includes the preset mountain mode, calculating the target climbing expected value of the battery charge based on a third preset engine noise reduction working range corresponding to the preset mountain mode; A target climbing increment value is calculated based on the target climbing expected value and the current charge amount of the vehicle, and the target expected value is obtained according to the target climbing increment value.

5. The method according to claim 1, characterized in that: Before obtaining the current navigation route of the vehicle, including: Determining whether map navigation, battery charge management, and driving mode control of the vehicle meet preset function association conditions; If the map navigation, the battery charge management and the driving mode control meet the preset function association conditions, the current navigation route is collected; otherwise, the hybrid noise reduction mode is exited.

6. An engine noise control device for a hybrid vehicle, characterized in that: include: An acquisition module, configured to acquire a current navigation route of the vehicle when detecting that the vehicle has entered a hybrid noise reduction mode; a confirmation module, configured to confirm at least one expected driving mode of the vehicle and a target expected value of a battery charge amount based on the current navigation route; A control module is used to control the engine to charge the vehicle based on the engine noise reduction working range corresponding to the at least one expected driving mode and the target expected value, so that the engine meets the preset noise reduction condition until the vehicle exits the hybrid noise reduction mode.

7. The device according to claim 6, characterized in that The control module comprises: A calculation unit, configured to calculate a target charging time of the current navigation route based on the engine noise reduction working range and the target expected value; A control unit is used to control the engine to charge based on the target charging duration.

8. The device according to claim 7, characterized in that The computing unit is specifically used for: In a case where the at least one expected driving mode is the preset city mode and / or the preset highway mode, confirming a first preset engine noise reduction operating interval corresponding to the preset city mode and / or a second preset engine noise reduction operating interval corresponding to the preset highway mode; The target charging duration is calculated based on the first preset engine noise reduction working interval and / or the second preset engine noise reduction working interval.

9. A vehicle, characterized in that: include: 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 noise control method for a hybrid vehicle as claimed in any one of claims 1 to 5.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the engine noise control method for a hybrid vehicle as described in any one of claims 1 to 5.

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