Control method of hybrid vehicle engine output, vehicle controller and hybrid vehicle

Abstract

The application provides a hybrid vehicle engine output control method, a vehicle controller and a hybrid vehicle, and the method comprises the following steps: determining whether the noise data in the vehicle is greater than a noise limit threshold; if yes, reducing the output of the engine of the hybrid vehicle to a predetermined range and then executing the subsequent steps; if no, directly executing the subsequent steps. According to the scene parameter data, the current driving scene of the hybrid vehicle is determined, the noise threshold corresponding to the current driving scene is found from a preset scene-noise database, the noise data in the vehicle is compared with the noise threshold, and according to the comparison result, the current driving scene and the battery power, it is determined whether the preset noise control condition is met; if yes, the hybrid vehicle is switched to a pure electric driving state; if not, it is determined whether the preset noise control condition is met. According to the scene and the noise experience of the user, the state of the engine can be controlled, and the electric noise experience of the user is improved.

Description

Technical Field

[0001] This invention relates to the field of engine control technology for hybrid vehicles, and particularly to a method for controlling the engine output of a hybrid vehicle, a vehicle controller, and a hybrid vehicle. Background Technology

[0002] Hybrid vehicles, characterized by low fuel consumption and long driving range, are gaining increasing market share in China. Range-extended hybrid vehicles, in particular, fall between traditional gasoline vehicles and pure electric vehicles. Because the engine in a range-extended hybrid does not directly drive the wheels, it can operate at a higher efficiency, resulting in less wear and tear on the engine. Therefore, range-extended hybrid vehicles have become increasingly popular among car buyers.

[0003] Noise is a significant factor affecting passenger comfort during the operation of hybrid vehicles. Achieving a noise level in range-extended hybrid vehicles that closely resembles that of electric vehicles can significantly improve passenger comfort; this is the essence of inductive noise reduction in hybrid vehicles.

[0004] To improve the inductive noise experience of hybrid vehicles, noise generated by the engine is typically controlled. Current technologies for engine noise control rely on traditional methods such as reducing engine noise, optimizing vehicle body structure, chassis structure, suspension structure, and acoustic packages. This involves reducing engine noise and adding sound insulation to the body structure. However, this approach cannot effectively control engine noise in specific driving scenarios, particularly in quiet environments where noise control is often ineffective. Summary of the Invention

[0005] The purpose of this invention is to solve the problem of poor engine noise control in hybrid vehicles in the prior art.

[0006] To address the above problems, embodiments of the present invention disclose a method for controlling the engine output of a hybrid vehicle, comprising:

[0007] S1: Acquire in-vehicle noise data at a preset first time interval, and determine whether the in-vehicle noise data is greater than a preset noise limit threshold.

[0008] If so, then after reducing the output speed and / or output torque of the hybrid vehicle's engine to a predetermined range, step S2 is executed;

[0009] If not, proceed directly to step S2;

[0010] S2: Acquire in-vehicle noise data, scene parameter data representing the current driving scenario of the hybrid vehicle, and battery charge of the hybrid vehicle at a preset second time interval. Determine the current driving scenario of the hybrid vehicle based on the scene parameter data. Search for the noise threshold corresponding to the current driving scenario from the preset scene-noise database based on the current driving scenario. Compare the in-vehicle noise data with the noise threshold. Determine whether the preset noise control conditions are met based on the comparison result, the current driving scenario, and the battery charge.

[0011] If the conditions are met, the engine output speed and / or output torque will be stopped, and the hybrid vehicle will be switched to pure electric driving mode.

[0012] If the conditions are not met, the system will reacquire in-vehicle noise data, scene parameter data, and battery power, and continue to determine whether the preset noise control conditions are met.

[0013] By employing the above solution, when the in-vehicle noise level exceeds a preset noise limit threshold, the engine output is directly limited, quickly reducing in-vehicle noise and improving the user's riding experience. Furthermore, once the noise control conditions are met, the vehicle controller sends control information to the engine controller to stop the engine, switching the hybrid vehicle to pure electric driving mode. By controlling the engine's operating state based on current in-vehicle noise data, the current driving scenario, and battery charge, engine control can better meet the noise control requirements of the current scenario, thereby improving noise control effectiveness and enhancing passenger comfort.

[0014] According to another specific embodiment of the present invention, the control method for engine output of a hybrid vehicle disclosed in this embodiment includes, in step S2, scene parameters including the chassis vibration frequency and road surface roughness of the hybrid vehicle; wherein, the chassis vibration frequency is obtained by a chassis vibration sensor installed on the chassis of the hybrid vehicle; the road surface roughness is obtained by an onboard camera installed at the front of the hybrid vehicle, wherein the road surface roughness represents the percentage of potholes in a unit road area; and, determining the current driving scene of the hybrid vehicle based on the scene parameter data includes: determining the current driving scene where the chassis vibration frequency is greater than or equal to a preset vibration frequency threshold and the road surface roughness is greater than or equal to a preset roughness threshold as a bad road condition; determining the current driving scene where the chassis vibration frequency is less than a preset vibration frequency threshold and the road surface roughness is less than a preset roughness threshold as a good road condition; the preset noise control conditions include: the current driving scene is a good road condition; the in-vehicle noise data is greater than or equal to a first noise threshold corresponding to the good road condition; and the battery charge is greater than a preset first charge threshold.

[0015] According to another specific embodiment of the present invention, the control method for engine output of a hybrid vehicle disclosed in this embodiment of the present invention includes a preset vibration frequency threshold that is directly proportional to the vehicle speed, wherein the vibration frequency threshold ranges from 15Hz to 25Hz and the vehicle speed ranges from 0km / h to 140km / h; a preset roughness threshold that is inversely proportional to the vehicle speed, wherein the roughness threshold ranges from 40% to 60%; a first noise threshold ranges from 40dB(A) to 50dB(A); and a first charge threshold ranges from 5% to 15%.

[0016] According to another specific embodiment of the present invention, in the control method for engine output of a hybrid vehicle disclosed in this embodiment, step S2 includes scene parameters including the congestion situation and environmental noise of the current driving segment of the hybrid vehicle; wherein, the congestion situation is obtained through at least one of the vehicle-mounted digital map and the vehicle-mounted camera, wherein the vehicle-mounted digital map displays the current driving segment in green, yellow, and red colors, corresponding to congestion situations of smooth traffic, slow traffic, and congestion, respectively; the vehicle-mounted camera acquires the vehicle situation in five directions: in front, left, right, left front, and right front. If there are no vehicles in any of the five directions, or only one direction has vehicles, the congestion situation is smooth traffic; if there are vehicles in two or three of the five directions... The congestion situation is defined as requiring slow movement. If there are vehicles in four or five of the five directions, the congestion situation is defined as congested. Ambient noise is obtained through noise sensors installed on the exterior of the vehicle. Furthermore, the current driving scenario of the hybrid vehicle is determined based on the scenario parameter data, including: defining the current driving scenario where the congestion situation is congested or requires slow movement, and / or the ambient noise is greater than or equal to a preset ambient noise threshold, as a congested and noisy road condition; defining the current driving scenario where the congestion situation is smooth and the ambient noise is less than the ambient noise threshold, as a smooth and quiet road condition. The preset noise control conditions include: the current driving scenario is a smooth and quiet road condition; the in-vehicle noise data is greater than or equal to the second noise threshold corresponding to a smooth and quiet road condition; and the battery charge is greater than a preset second charge threshold.

[0017] According to another specific embodiment of the present invention, the control method for engine output of a hybrid vehicle disclosed in this embodiment of the present invention has a preset environmental noise threshold that is proportional to the vehicle speed of the hybrid vehicle, wherein the environmental noise threshold ranges from 80 dB(A) to 100 dB(A), the vehicle speed ranges from 0 km / h to 140 km / h, the second noise threshold ranges from 40 dB(A) to 50 dB(A), and the second battery level threshold ranges from 5% to 15%.

[0018] According to another specific embodiment of the present invention, in step S2 of the control method for the engine output of a hybrid vehicle disclosed in this embodiment, the scene parameters include the weather conditions and rainfall value of the current driving segment of the hybrid vehicle; wherein, the weather conditions are obtained through an in-vehicle communication network; the rainfall value is obtained through a rain sensor installed on the windshield of the hybrid vehicle; and, determining the current driving scenario of the hybrid vehicle based on the scene parameter data includes: determining the current driving scenario where the weather conditions of the current driving segment obtained through the in-vehicle communication network are windy, snowy, or rainy, and / or the rainfall value is greater than or equal to a preset rainfall threshold as snowy weather; determining the current driving scenario where the weather conditions of the current driving segment obtained through the in-vehicle communication network are sunny or cloudy, and the rainfall value is less than the rainfall threshold as quiet weather; the preset noise control conditions include: the current driving scenario is quiet weather; the in-vehicle noise data is greater than or equal to a preset rainfall threshold. The scenario parameters include the hybrid vehicle's speed and the road type of the current driving segment. The speed is obtained from a speed sensor installed in the hybrid vehicle's powertrain. The road type is obtained from the vehicle's digital map, which includes highways, urban roads, and rural roads. Determining the current driving scenario of the hybrid vehicle based on the scenario parameters also includes: defining the current driving scenario as a highway condition when the speed is greater than or equal to the preset speed threshold and the road type is a highway; defining the current driving scenario as a low-to-medium speed condition when the speed is less than the speed threshold and / or the road type is an urban road or rural road. The preset noise control conditions also include: the current driving scenario is a low-to-medium speed condition; the in-vehicle noise data is greater than or equal to the fourth noise threshold corresponding to the low-to-medium speed condition; and the battery level is greater than the preset fourth power threshold.

[0019] According to another specific embodiment of the present invention, the control method for engine output of a hybrid vehicle disclosed in this embodiment of the present invention includes a preset rainfall threshold ranging from 1 mm / min to 10 mm / min; a third noise threshold ranging from 40 dB(A) to 50 dB(A); a third battery level threshold ranging from 5% to 15%; a vehicle speed threshold ranging from 70 km / h to 80 km / h; a fourth noise threshold ranging from 40 dB(A) to 50 dB(A); and a fourth battery level threshold ranging from 5% to 15%.

[0020] According to another specific embodiment of the present invention, the method for controlling the engine output of a hybrid vehicle disclosed in this embodiment includes the following steps: In step S1, the preset first time interval is in the range of 20 min to 40 min; the preset noise limit threshold is proportional to the vehicle speed of the hybrid vehicle, wherein the noise limit threshold ranges from 70 dB(A) to 90 dB(A), and the vehicle speed ranges from 0 km / h to 140 km / h; the predetermined range of the output speed is from 1500 rpm to 2000 rpm; and the predetermined range of the output torque is from 250 N·m to 280 N·m. In step S2, the preset second time interval is in the range of 10 min to 20 min; and the battery charge is obtained by a charge sensor installed in the on-board battery pack of the hybrid vehicle.

[0021] An embodiment of the present invention discloses a vehicle controller, including a memory for storing control programs;

[0022] The processor executes the steps of the control method for the engine output of a hybrid vehicle as described in any of the above embodiments when processing the control program.

[0023] An embodiment of the present invention discloses a hybrid vehicle, including a vehicle controller as described in the above embodiments.

[0024] The beneficial effects of this invention are:

[0025] The hybrid vehicle engine output control method provided in this solution acquires relevant information through sensors installed throughout the vehicle and the vehicle's digital map, and transmits this information to the vehicle controller. This allows for the determination of the hybrid vehicle's driving scenario and state, enabling accurate assessment of the current driving situation without the need for additional information acquisition devices, thus reducing deployment complexity and costs. Furthermore, the determined current driving scenario lays the foundation for subsequent engine state adjustments, ensuring that these adjustments are based on the driving scenario and enhancing the user's electrification experience.

[0026] Furthermore, by comparing in-vehicle noise data with in-vehicle noise data retrieved from a preset scene-noise database, and based on the comparison results, the current driving scenario, and battery level, it is determined whether it is necessary to shut down the engine to reduce engine noise. Since the engine noise adjustment takes into account both in-vehicle noise and in-vehicle noise data, the conditions for determining whether to shut down the engine can be set more accurately. Moreover, when the in-vehicle noise exceeds the noise limit threshold, directly reducing the engine output can quickly reduce noise generated by engine operation.

[0027] Furthermore, when the vehicle is driving in a relatively quiet environment and the battery charge is above a preset threshold, the engine can be shut off to improve the user's inductive noise experience. When the battery charge is below or equal to the preset threshold, the engine remains running. This ensures the normal operation of the hybrid vehicle while minimizing intervention and control over the engine's operation when external environmental noise is high or the battery charge is high, thus eliminating the need for real-time engine monitoring and achieving a certain level of energy savings. Attached Figure Description

[0028] Figure 1 This is a flowchart of a method for controlling the engine output of a hybrid vehicle according to an embodiment of the present invention;

[0029] Figure 2 This is a graph of inductive noise under different road conditions provided in an embodiment of the present invention;

[0030] Figure 3 This is a graph of inductive noise in a congested and noisy environment provided by an embodiment of the present invention;

[0031] Figure 4 This is a graph showing the impact of engine startup on inductive noise in a high-speed scenario, provided by an embodiment of the present invention.

[0032] Figure 5 This is an inductive noise curve diagram of the engine starting and not starting in a low-speed scenario, provided by an embodiment of the present invention. Detailed Implementation

[0033] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention is presented in conjunction with preferred embodiments, this does not mean that the features of the invention are limited to these embodiments. On the contrary, the purpose of describing the invention in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of the present invention. To provide a deep understanding of the invention, many specific details will be included in the following description. The invention may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of the invention, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0034] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of the invention is usually placed in during use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0036] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0037] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0038] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0039] Example 1:

[0040] To address the problem of poor engine noise control in existing hybrid vehicles, this invention discloses a method for controlling the engine output of a hybrid vehicle. Specifically, refer to... Figure 1 This includes the following steps:

[0041] S1: Acquire in-vehicle noise data at a preset first time interval, and determine whether the in-vehicle noise data is greater than a preset noise limit threshold.

[0042] If so, then after reducing the output speed and / or output torque of the hybrid vehicle's engine to a predetermined range, step S2 is executed;

[0043] If not, proceed directly to step S2;

[0044] S2: Acquire in-vehicle noise data, scene parameter data representing the current driving scenario of the hybrid vehicle, and battery charge of the hybrid vehicle at a preset second time interval. Determine the current driving scenario of the hybrid vehicle based on the scene parameter data. Search for the noise threshold corresponding to the current driving scenario from the preset scene-noise database based on the current driving scenario. Compare the in-vehicle noise data with the noise threshold. Determine whether the preset noise control conditions are met based on the comparison result, the current driving scenario, and the battery charge.

[0045] If the conditions are met, the engine output speed and / or output torque will be stopped, and the hybrid vehicle will be switched to pure electric driving mode.

[0046] If the conditions are not met, the system will reacquire in-vehicle noise data, scene parameter data, and battery power, and continue to determine whether the preset noise control conditions are met.

[0047] Specifically, in step S1, the preset first time interval ranges from 20 minutes to 40 minutes, for example, it can be 20 minutes, 30 minutes, 40 minutes, or other times within this range. The preset noise limit threshold is directly proportional to the vehicle speed of the hybrid vehicle; that is, the higher the vehicle speed, the higher the preset noise limit threshold. The noise limit threshold ranges from 70 dB(A) to 90 dB(A), and the vehicle speed ranges from 0 km / h to 140 km / h. For example, when the vehicle speed is 0 km / h, the engine is idling, and the noise limit threshold is 70 dB(A); when the vehicle speed is 70 km / h, the noise limit threshold is 80 dB(A); and when the vehicle speed is 140 km / h, the noise limit threshold is 90 dB(A). More specifically, the in-vehicle noise data is obtained through noise sensors installed in the cockpit. The noise sensor sends the acquired in-vehicle noise data to the vehicle controller. The vehicle controller compares the in-vehicle noise data with the noise limit thresholds pre-stored in the vehicle controller, and then executes subsequent steps based on the judgment result. Since the noise limit thresholds are related to vehicle speed, the vehicle controller also obtains the vehicle speed from the vehicle speed sensor before performing data comparison and determines the noise limit threshold corresponding to the current vehicle speed.

[0048] Specifically, in step S1, the predetermined range of the output speed is 1500 rpm to 2000 rpm, for example, it could be 1500 rpm, 1800 rpm, 2000 rpm, or other values ​​within this range. The predetermined range of the output torque is 250 N·m to 280 N·m, for example, it could be 250 N·m, 270 N·m, 280 N·m, or other values ​​within this range. That is to say, when the in-vehicle noise data exceeds the preset noise limit threshold, the in-vehicle noise is too high, and the engine output is directly reduced to weaken the noise. Reducing the engine output includes three methods: reducing only the engine output speed, reducing only the engine output torque, and reducing both the engine output speed and output torque simultaneously. With this approach, when the in-vehicle noise data exceeds the preset noise limit threshold, the engine output is directly limited, which can quickly reduce the in-vehicle noise level and improve the user's riding experience.

[0049] Specifically, in step S2, the preset second time interval ranges from 10 to 20 minutes; for example, it could be 10 minutes, 15 minutes, 20 minutes, or other values ​​within this range. More specifically, the scene parameter data is obtained through sensors deployed throughout the vehicle body. After acquiring the scene parameter data, the sensors send the data to the vehicle controller. The vehicle controller determines the current driving scene of the hybrid vehicle according to predetermined rules. The vehicle controller also pre-stores a scene-noise database, which represents different noise thresholds corresponding to different vehicle speeds. The noise threshold is directly proportional to the vehicle speed, with the vehicle speed range being 30 km / h to 80 km / h and the noise threshold range being 40 dB(A) to 50 dB(A). For example, when the vehicle speed is 30 km / h or less, the noise threshold is 40 dB(A); when the vehicle speed is 55 km / h, the noise threshold is 45 dB(A); and when the vehicle speed is 80 km / h or greater, the noise threshold is 50 dB(A). In this embodiment, the noise threshold is determined only based on vehicle speed, resulting in a smaller data volume and improved processing efficiency of the vehicle controller.

[0050] Specifically, in step S2, the battery level is obtained through a power sensor installed in the hybrid vehicle's onboard battery pack. After obtaining the battery level, the power sensor sends the battery level data to the vehicle controller. More specifically, in step S2, after the noise control conditions are met, the vehicle controller sends control information to the engine controller to stop the engine, thereby switching the hybrid vehicle to pure electric driving mode. This approach, by controlling the engine's operating state based on current in-vehicle noise data, the current driving scenario, and the battery level, allows the engine control to better meet the noise control requirements of the current scenario, thus improving the noise control effect and enhancing passenger comfort.

[0051] Furthermore, in the control method for the engine output of the hybrid vehicle according to the present invention, in step S2, the scene parameters include the chassis vibration frequency and road surface roughness of the hybrid vehicle. Specifically, the chassis vibration frequency is obtained by a chassis vibration sensor installed on the chassis of the hybrid vehicle; the road surface roughness is obtained by an onboard camera installed at the front of the hybrid vehicle. The road surface roughness represents the percentage of potholes within a unit road area.

[0052] Furthermore, in the control method for the engine output of the hybrid vehicle according to the present invention, determining the current driving scenario of the hybrid vehicle based on scenario parameter data includes: determining a current driving scenario where the chassis vibration frequency is greater than or equal to a preset vibration frequency threshold and the road surface roughness is greater than or equal to a preset roughness threshold as a bad road condition; and determining a current driving scenario where the chassis vibration frequency is less than a preset vibration frequency threshold and the road surface roughness is less than a preset roughness threshold as a good road condition. Specifically, the preset vibration frequency threshold is directly proportional to the vehicle speed of the hybrid vehicle, wherein the vibration frequency threshold ranges from 15Hz to 25Hz, and the vehicle speed ranges from 0km / h to 140km / h. For example, when the vehicle speed is 0km / h, the vibration frequency threshold is 15Hz; when the vehicle speed is 70km / h, the vibration frequency threshold is 20Hz; and when the vehicle speed is 140km / h, the vibration frequency threshold is 25Hz. Furthermore, the preset roughness threshold is inversely proportional to the vehicle speed, wherein the roughness threshold ranges from 40% to 60%. In other words, for road surfaces with the same roughness, the faster the vehicle travels, the greater the noise generated on that surface. Greater noise indicates a poorer road condition. For example, the roughness threshold is 60% at 0 km / h, 50% at 70 km / h, and 40% at 140 km / h.

[0053] Furthermore, in the engine output control method of the hybrid vehicle according to the present invention, the preset noise control conditions include: the current driving scenario is a good road condition; the in-vehicle noise data is greater than or equal to a first noise threshold corresponding to the good road condition; and the battery charge is greater than a preset first charge threshold.

[0054] Specifically, the first noise threshold ranges from 40 dB(A) to 50 dB(A), for example, it can be 40 dB(A), 45 dB(A), 50 dB(A), or other noise values ​​within this range; the first power threshold ranges from 5% to 15%, for example, it can be 5%, 10%, or 15%.

[0055] In other words, when the current driving scenario of the hybrid vehicle is a good road condition, that is... Figure 2In smooth road scenarios, the ambient noise level outside the vehicle is low, and the noise curve is mostly lower than the engine noise level. If the noise level inside the vehicle exceeds the first noise threshold, it indicates excessive noise, which is likely caused by the hybrid vehicle itself, such as engine noise. If the battery charge is greater than the first charge threshold, the vehicle is ready for pure electric driving. In this case, the engine can be turned off to reduce engine noise. This will not affect the normal driving of the hybrid vehicle, and it also minimizes engine noise output in a quiet environment, thereby improving engine noise control and the user's inductive noise experience. However, if the current driving scenario of the hybrid vehicle is a rough road, i.e. Figure 2 In bad road scenarios, the road noise level outside the vehicle is high, and the noise curve is almost entirely higher than the engine noise level. In this case, turning off the engine will not have much impact on the noise inside the vehicle.

[0056] It should be noted that when the battery charge is greater than the preset starting charge threshold, the hybrid vehicle has a high charge level, so there is no need to start the engine, and the engine will not produce noise. The inductive noise experience is good at this time, and no engine control is required. When the battery charge is less than or equal to the preset starting charge threshold, the engine needs to be started to ensure the hybrid vehicle's driving range for a certain period. After the engine starts, it is determined whether the above noise control conditions are met. If they are, the engine starting is stopped. The following are situations where the above noise control conditions are not met: First, the current driving scenario is a bad road condition. Due to the high road noise, the engine noise is masked, and even if the engine is stopped, there will still be considerable noise. In this case, no adjustment to the engine's operating status is needed. Second, the current in-vehicle noise level is less than the first noise threshold. The in-vehicle environment is relatively quiet, and no adjustment to the engine's operating status is needed. Third, the battery charge is less than or equal to the preset first charge threshold, for example, 10%. The battery charge is relatively low, and the engine must be started to ensure normal vehicle operation. Therefore, regardless of whether the in-vehicle noise is excessive, no further adjustment to the engine's operating status is needed. It should also be noted that the first noise threshold is also obtained from the scene-noise database based on the vehicle speed.

[0057] Furthermore, in the control method for the engine output of the hybrid vehicle according to the present invention, in step S2, the scene parameters include the congestion situation and environmental noise of the current driving segment of the hybrid vehicle. Specifically, the congestion situation is obtained through at least one of the vehicle-mounted digital map and the vehicle-mounted camera. The vehicle-mounted digital map displays the current driving segment in green, yellow, and red, corresponding to congestion situations of smooth traffic, slowing down, and congestion, respectively. The vehicle-mounted camera acquires vehicle information in five directions: in front, to the left, to the right, to the left front, and to the right front. If there are no vehicles in any of the five directions, or only one direction has vehicles, the congestion situation is smooth traffic; if there are vehicles in two or three of the five directions, the congestion situation is slowing down; and if there are vehicles in four or all five directions, the congestion situation is congested. More specifically, when traffic congestion is determined jointly by the vehicle's digital map and in-vehicle cameras, the information from the vehicle's digital map takes precedence when it displays yellow or red, and the information from the in-vehicle cameras takes precedence when it displays green. This approach avoids delays in updating the vehicle's digital map and improves the accuracy of congestion determination.

[0058] Specifically, ambient noise is acquired using noise sensors located on the exterior of the vehicle body. These noise sensors are connected to the vehicle controller to transmit the acquired ambient noise data.

[0059] Furthermore, in the control method for the engine output of the hybrid vehicle according to the present invention, determining the current driving scenario of the hybrid vehicle based on scenario parameter data includes: defining the current driving scenario where the congestion is congested or requires slowing down, and / or the environmental noise is greater than or equal to a preset environmental noise threshold, as a congested and noisy road condition; and defining the current driving scenario where the congestion is smooth and the environmental noise is less than the environmental noise threshold, as a smooth and quiet road condition. In other words, when either of the two conditions—congestion or requiring slowing down, and environmental noise greater than or equal to a preset environmental noise threshold—is met, the current driving scenario is defined as a congested and noisy road condition. At this time, the noise perceived by the occupants is mainly environmental noise and noise generated by other vehicles, and the engine sound is mostly masked by environmental noise and noise generated by other vehicles. However, when the hybrid vehicle is driving on a road with less traffic and a lower environmental noise level, the external environment is relatively quiet, and the noise generated by the engine during operation will be more noticeable.

[0060] Specifically, the preset environmental noise threshold is proportional to the vehicle speed of the hybrid vehicle. The environmental noise threshold ranges from 80 dB(A) to 100 dB(A), and the vehicle speed ranges from 0 km / h to 140 km / h. For example, when the vehicle speed is 0 km / h, the environmental noise threshold is 80 dB(A); when the vehicle speed is 70 km / h, the environmental noise threshold is 90 dB(A); and when the vehicle speed is 140 km / h, the environmental noise threshold is 100 dB(A). In this embodiment, the environmental noise threshold is set to a relatively high noise level because the sound insulation of the vehicle itself reduces the noise heard by passengers, thus improving the accuracy of determining the current driving scenario.

[0061] Furthermore, in the engine output control method of the hybrid vehicle according to the present invention, the preset noise control conditions include: the current driving scenario is a smooth and quiet road condition; the in-vehicle noise data is greater than or equal to a second noise threshold corresponding to a smooth and quiet road condition; and the battery charge is greater than a preset second charge threshold. Specifically, the range of the second noise threshold is 40dB(A) to 50dB(A), for example, it can be 40dB(A), 45dB(A), 50dB(A), or other noise values ​​within this range; the range of the second charge threshold is 5% to 15%, for example, it can be 5%, 10%, or 15%. It should be noted that the second noise threshold is obtained from the scenario-noise database based on the vehicle speed.

[0062] In other words, when the hybrid vehicle is driving in a clear and quiet road environment, the ambient noise level outside the vehicle is low, and the ambient noise perceived by passengers inside the vehicle is even lower. If the noise level inside the vehicle exceeds the second noise threshold, meaning the noise inside the vehicle is high, this noise is most likely caused by the hybrid vehicle itself, such as noise generated by the engine. If the battery charge is relatively high, for example, above 10%, the engine can be turned off to reduce the noise generated by the engine. This will not affect the normal driving of the hybrid vehicle, and it can also minimize the engine noise output in a clear and quiet environment, thereby improving the engine noise control effect and the user's inductive noise experience without affecting the normal driving of the hybrid vehicle.

[0063] It should be noted that when the battery charge is greater than the preset starting charge threshold, the hybrid vehicle has a high charge level, so there is no need to start the engine, and the engine will not produce noise. Consequently, the user's inductive noise experience is also relatively good, and there is no need to intervene or control the engine's operation. When the battery charge is less than or equal to the preset starting charge threshold, the engine needs to be started to ensure the normal operation of the hybrid vehicle for a period of time. After the engine starts, it is determined whether the noise control conditions are met; if so, the engine starting is stopped.

[0064] The following are some situations where the above noise control conditions are not met: First, the current driving scenario is a congested and noisy road condition, in which case the engine sound will be mostly masked by environmental noise and noise from other vehicles. (Refer to...) Figure 3 At this point, the noise levels from the truck's diesel engine, external horns, and construction noise are all higher than the engine noise. Even shutting down the engine won't significantly reduce noise, so there's no need to adjust the engine's operating status. Secondly, when the in-vehicle noise level is below the second noise threshold, the interior environment is relatively quiet, and the engine noise won't significantly affect the occupants; therefore, no adjustment to the engine's operating status is necessary. Thirdly, when the battery charge is less than or equal to the second charge threshold (e.g., 10%), the battery charge is low, requiring the engine to be started for normal vehicle operation. Therefore, regardless of whether the in-vehicle noise is excessive, no further adjustment to the engine's operating status is needed.

[0065] Furthermore, in the control method for the engine output of the hybrid vehicle according to the present invention, in step S2, the scenario parameters include the weather conditions and rainfall value of the current driving segment of the hybrid vehicle. Specifically, the weather conditions are obtained through the vehicle-mounted communication network. Specifically, the vehicle-mounted communication network obtains weather information of the hybrid vehicle's location from a cloud server, such as rain, snow, sunny, or cloudy weather. The rainfall value is obtained through a rain sensor installed on the windshield of the hybrid vehicle. Both the vehicle-mounted communication network and the rain sensor are connected to the vehicle controller, and the acquired weather conditions and rainfall value are sent to the vehicle controller.

[0066] Furthermore, in the control method for the engine output of the hybrid vehicle according to the present invention, determining the current driving scenario of the hybrid vehicle based on scenario parameter data includes: determining the current driving scenario as windy / snowy weather when the weather conditions of the current driving segment obtained through the vehicle communication network are windy, snowy, or rainy, and / or the rainfall value is greater than or equal to a preset rainfall threshold; and determining the current driving scenario as quiet weather when the weather conditions of the current driving segment obtained through the vehicle communication network are sunny or cloudy, and the rainfall value is less than the rainfall threshold. It should be noted that if either of the two conditions—windy, snowy, or rainy weather, and rainfall value greater than or equal to the preset rainfall threshold—is met, the current driving scenario of the hybrid vehicle is determined to be windy / snowy weather. Furthermore, only when both conditions—sunny or cloudy weather, and rainfall value less than the rainfall threshold—are met simultaneously is the current driving scenario of the hybrid vehicle determined to be quiet weather. In other words, when the weather conditions reported by the vehicle communication network are sunny, but the rainfall value is greater than or equal to the preset rainfall threshold, it indicates that there may be thunderstorms or brief rainfall at the location of the hybrid vehicle. However, due to the noise generated by the rain, the engine noise will be masked by the rain noise. Specifically, the preset rainfall threshold ranges from 1 mm / min to 10 mm / min, for example, it can be mm / min, 4.5 mm / min, 8 mm / min, 10 mm / min, or other rainfall values.

[0067] Furthermore, in the engine output control method of the hybrid vehicle according to the present invention, the preset noise control conditions include: the current driving scenario is quiet weather; the in-vehicle noise data is greater than or equal to a third noise threshold corresponding to quiet weather; and the battery charge is greater than a preset third charge threshold. Specifically, the range of the third noise threshold is 40dB(A) to 50dB(A), for example, it can be 40dB(A), 45dB(A), 50dB(A), or other noise values ​​within this range; the range of the third charge threshold is 5% to 15%, for example, it can be 5%, 10%, or 15%.

[0068] In other words, when the hybrid vehicle is driving in quiet weather, the ambient noise level outside the vehicle is low. If the noise level inside the vehicle exceeds the third noise threshold, it indicates that the noise inside the vehicle is relatively high. This noise is most likely caused by the hybrid vehicle itself, such as the noise generated by the engine. If the battery charge is high, for example, above 10%, the engine can be turned off to reduce the noise generated by the engine. This will not affect the normal driving of the hybrid vehicle, and it can also minimize the engine noise output in a quiet environment, thereby improving the engine noise control effect and the user's inductive noise experience without affecting the normal driving of the hybrid vehicle.

[0069] Furthermore, in the control method for the engine output of the hybrid vehicle according to the present invention, the scenario parameters also include the vehicle speed of the hybrid vehicle and the road type of the current driving segment; wherein, the vehicle speed is obtained by a vehicle speed sensor installed in the powertrain of the hybrid vehicle. The road type is obtained by the vehicle's digital map, wherein the road type includes highways, urban roads, and rural roads.

[0070] Furthermore, in the control method for the engine output of the hybrid vehicle according to the present invention, determining the current driving scenario of the hybrid vehicle based on scenario parameter data further includes: determining the current driving scenario where the vehicle speed is greater than or equal to a preset vehicle speed threshold and the road type is a highway as a highway condition; and determining the current driving scenario where the vehicle speed is less than the vehicle speed threshold and / or the road type is an urban road or a rural road as a medium-low speed condition. Specifically, the vehicle speed threshold ranges from 70 km / h to 80 km / h. An example using a vehicle speed threshold of 80 km / h will be provided. In this embodiment, driving scenarios where the vehicle speed is greater than 80 km / h and the road type is a highway are determined as highway conditions, and other situations are determined as medium-low speed conditions. In highway conditions, refer to... Figure 4 At higher speeds, road noise and wind noise are higher than engine noise. At this speed, due to the higher vehicle speed, road noise, tire noise, and wind noise are all relatively high, and the noise generated by the engine is masked by these noises. When the vehicle speed is lower, or when driving on urban or rural roads, road noise, tire noise, and wind noise are not excessive, and passengers inside the vehicle can feel noticeable engine noise.

[0071] Furthermore, in the engine output control method of the hybrid vehicle according to the present invention, the preset noise control conditions further include: the current driving scenario is a low-to-medium speed road condition; the in-vehicle noise data is greater than or equal to a fourth noise threshold corresponding to the low-to-medium speed road condition; and the battery charge is greater than a preset fourth charge threshold. Specifically, the range of the fourth noise threshold is 40dB(A) to 50dB(A), for example, it can be 40dB(A), 45dB(A), 50dB(A), or other noise values ​​within this range; the range of the fourth charge threshold is 5% to 15%, for example, it can be 5%, 10%, or 15%.

[0072] In other words, when the current driving scenario of a hybrid vehicle is a low-to-medium speed road condition, refer to Figure 5If the road noise, tire noise, and wind noise are all relatively low, the ambient noise level outside the vehicle is low, and the ambient noise perceived by occupants inside the vehicle should also be relatively low. The noise level generated when the engine is starting is higher, and the noise level is lower when it is not running. If the noise level inside the vehicle exceeds the fourth noise threshold, it indicates that the noise inside the vehicle is too high, and this noise is most likely caused by the hybrid vehicle itself, such as the noise generated by the engine running. If the battery charge is greater than the fourth charge threshold, it means that the vehicle is capable of pure electric operation. At this time, the engine can be turned off to reduce the noise generated by the engine. This will not affect the normal operation of the hybrid vehicle, and can also minimize the engine noise output in a quiet environment, thereby improving the engine noise control effect and the user's electric noise experience.

[0073] It should be noted that when the battery charge is greater than the preset starting charge threshold, the hybrid vehicle has a high charge level, so there is no need to start the engine. The engine will not produce noise, resulting in a good inductive noise experience for the user, and no intervention or control of the engine operation is required. When the battery charge is less than or equal to the starting charge threshold, the engine needs to be started to ensure normal operation of the hybrid vehicle for a period of time. After the engine starts, it begins to determine whether the above-mentioned noise control conditions are met. When the hybrid vehicle is driving in a relatively quiet environment, the interior noise is relatively high, and the hybrid vehicle is capable of pure electric operation, the engine will not start.

[0074] The following are some situations where the above noise control conditions are not met: First, the current driving scenario is on a highway. Due to the significant road noise, tire noise, and wind noise on highways, engine noise is masked. Even when the engine is off, there is still considerable road noise, tire noise, and wind noise; therefore, there is no need to adjust the engine's operating status. Second, the current in-vehicle noise level is below the fourth noise threshold. In this case, the in-vehicle environment is relatively quiet, meaning the engine is not generating excessive noise that affects the driving experience of the occupants. Therefore, there is also no need to adjust the engine's operating status. Third, the battery charge is less than or equal to the fourth charge threshold, for example, 10%. In this case, the battery charge is low, and the engine must be started to ensure normal vehicle operation. Therefore, regardless of whether the in-vehicle noise is excessive or whether it is generated by engine operation, no further adjustments to the engine's operating status are made. It should also be noted that the fourth noise threshold is obtained from the scenario-noise database based on vehicle speed.

[0075] It should also be noted that in this embodiment, the preset starting power threshold refers to the battery level at which the engine needs to be started to charge. However, if there is a genuine need not to start the engine, the remaining battery power can ensure the normal operation of the hybrid vehicle for a short period of time. Generally, the starting power threshold ranges from 15% to 35%, for example, it could be 15%, 25%, 35%, or other values ​​within this range. The first to fourth power thresholds of 5% to 15% mentioned in the previous embodiment refer to the battery level at which the engine must be started to charge. If the engine is not started at this point, the hybrid vehicle's driving will inevitably be affected. Let's take a starting power threshold of 30% and the first to fourth power thresholds of 10% as an example. When the hybrid vehicle's battery level is higher than 30%, the engine does not start and there is no operating noise. When the hybrid vehicle's battery level is less than or equal to 30%, the engine needs to be started to charge in order to ensure the hybrid vehicle's driving range for a future period of time. After the engine starts, when the hybrid vehicle is driving in a quiet environment, in order to improve the user's inductive noise experience, if the battery charge is higher than 10%, it means that the engine can be temporarily not started to charge, and the vehicle can be driven normally by electric power alone for a short period of time. At this time, the engine can be turned off to avoid the engine noise affecting the noise experience of the passengers.

[0076] The engine output control method for hybrid vehicles provided in this embodiment acquires relevant information through sensors installed throughout the vehicle body and the vehicle's digital map, and transmits this information to the vehicle controller. This allows for the determination of the hybrid vehicle's driving scenario and state, enabling accurate assessment of the current driving scenario without the need for additional information acquisition devices, thus reducing deployment difficulty and costs. Furthermore, the determined current driving scenario lays the foundation for subsequent engine state adjustments, ensuring that these adjustments are based on the driving scenario and enhancing the user's immersive driving experience.

[0077] Furthermore, the engine output control method of this hybrid vehicle compares in-vehicle noise data with in-vehicle noise data obtained from a preset scene-noise database, and determines whether it is necessary to shut down the engine to reduce engine noise based on the comparison result, the current driving scenario, and the battery charge. Since the engine noise adjustment takes into account both in-vehicle noise and in-vehicle noise data, the conditions for determining whether to shut down the engine can be set more accurately. Moreover, when the in-vehicle noise exceeds the noise limit threshold, directly reducing the engine output can quickly reduce the noise generated by engine operation.

[0078] Furthermore, the engine output control method of this hybrid vehicle can shut off the engine in relatively quiet driving environments and when the battery charge is above a preset threshold to improve the user's inductive noise experience. When the battery charge is below or equal to the preset threshold, the engine remains running. This ensures normal hybrid vehicle operation while minimizing intervention and control over engine operation in noisy environments or when the battery charge is high, eliminating the need for real-time engine monitoring and resulting in energy savings.

[0079] Example 2:

[0080] Based on the above-described method for controlling the engine output of a hybrid vehicle, this embodiment also provides a specific method for controlling the engine output of a hybrid vehicle. The hybrid vehicle in this embodiment is a range-extended hybrid vehicle.

[0081] First, in-vehicle noise sensors located in the passenger compartment acquire in-vehicle noise data every 20 minutes and transmit the data to the vehicle controller. Assuming the current in-vehicle noise level is 80 dB(A), and the vehicle controller has a pre-stored noise limit threshold of 75 dB(A), the vehicle controller determines that the in-vehicle noise level exceeds the noise limit. Furthermore, the vehicle controller obtains engine status information from the engine controller. If the engine is currently running, the hybrid vehicle's engine output speed is directly reduced to 1800 rpm, and the engine output torque is reduced to 250 N·m.

[0082] The system utilizes chassis vibration sensors to obtain chassis vibration frequency, on-board cameras to obtain road surface roughness, vehicle-mounted digital maps and on-board cameras to obtain traffic congestion information, noise sensors located on the exterior of the vehicle to obtain ambient noise, on-board communication networks to obtain weather conditions, rain sensors to obtain rainfall values, vehicle speed sensors to obtain vehicle speed, and on-board digital maps to obtain road types. All of these sensors transmit their data to the vehicle controller every 10 minutes.

[0083] The vehicle controller comprehensively determines the current driving scenario of the hybrid vehicle based on the data obtained from the aforementioned sensors. These driving scenarios include relatively quiet, low-noise roads, smooth and quiet roads, quiet weather, and low-to-medium speed roads. Driving scenarios also include relatively noisy, high-noise roads, congested and noisy roads, snowy weather, and highway conditions.

[0084] The vehicle controller also acquires battery charge data from the battery level sensor. When the battery charge is above the 70% starting charge threshold, the hybrid vehicle has a high enough charge level that the engine does not need to be started, and the engine will not produce noise. When the battery charge is less than or equal to 70%, the engine needs to be started to charge the battery in order to ensure the hybrid vehicle's power performance and driving range.

[0085] After the engine starts, the vehicle controller searches the scene-noise database for the noise threshold corresponding to the current vehicle speed. It then compares the in-vehicle noise data with the noise threshold. If the in-vehicle noise data is greater than or equal to the corresponding noise threshold, it indicates that the in-vehicle noise is high, and further assessment is needed to determine if the battery charge is greater than the preset 20% threshold. If the battery charge is higher than 20%, the vehicle can maintain normal driving for a period of time. If the current driving scenario for the hybrid vehicle is a relatively quiet road with low noise levels, a smooth and quiet road, quiet weather, or a low-to-medium speed road, the engine can be shut off to reduce engine noise and improve the user's inductive noise experience. If the current driving scenario for the hybrid vehicle is a relatively noisy road with high noise levels, a congested and noisy road, snowy weather, or a highway, the engine noise is masked by environmental noise, road noise, tire noise, wind noise, etc., and therefore no intervention or control of the engine's operating status is required.

[0086] Example 3:

[0087] Based on the above-described control method for the engine output of a hybrid vehicle, this embodiment provides a vehicle controller, including a memory and a processor.

[0088] The memory is used to store the control program.

[0089] When the processor processes the control program, it executes the steps of the control method for the engine output of a hybrid vehicle as described in any of the above embodiments.

[0090] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. The processor is a hardware circuit with data processing capabilities, such as a CPU.

[0091] Example 4:

[0092] Based on the vehicle controller described above, this embodiment also provides a hybrid vehicle, including the vehicle controller as described in the above embodiment.

[0093] The hybrid vehicles in this embodiment include, but are not limited to, series hybrid electric vehicles (SHEV), parallel hybrid electric vehicles (PHEV), and series-parallel hybrid electric vehicles (PSHEV).

[0094] While the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the invention to these descriptions. Various changes in form and detail can be made by those skilled in the art, including several simple deductions or substitutions, without departing from the spirit and scope of the invention.

Claims

1. A method for controlling the engine output of a hybrid vehicle, characterized in that, include: S1: Acquire in-vehicle noise data at a preset first time interval, and determine whether the in-vehicle noise data is greater than a preset noise limit threshold. If so, then after reducing the output speed and / or output torque of the hybrid vehicle's engine to a predetermined range, step S2 is executed; If not, proceed directly to step S2; S2: Acquire in-vehicle noise data, scene parameter data representing the current driving scenario of the hybrid vehicle, and battery charge of the hybrid vehicle at a preset second time interval. Determine the current driving scenario of the hybrid vehicle based on the scene parameter data. Search for the noise threshold corresponding to the current driving scenario from a preset scene-noise database based on the current driving scenario. Compare the in-vehicle noise data with the noise threshold. Determine whether the preset noise control conditions are met based on the comparison result, the current driving scenario, and the battery charge. If the conditions are met, the engine output speed and / or output torque will be stopped, and the hybrid vehicle will be switched to pure electric driving mode. If the conditions are not met, the in-vehicle noise data, the scene parameter data, and the battery charge are reacquired, and the preset noise control conditions are determined again.

2. The control method for engine output of a hybrid vehicle as described in claim 1, characterized in that, In step S2, the scenario parameters include the chassis vibration frequency and road surface roughness of the hybrid vehicle; wherein The chassis vibration frequency is obtained by a chassis vibration sensor installed on the chassis of the hybrid vehicle. The road surface roughness is obtained through an onboard camera located at the front of the hybrid vehicle, wherein the road surface roughness represents the percentage of potholes per unit road area; and Determining the current driving scenario of the hybrid vehicle based on the scenario parameter data includes: The current driving scenario in which the chassis vibration frequency is greater than or equal to a preset vibration frequency threshold and the road surface roughness is greater than or equal to a preset roughness threshold is defined as a bad road condition. The current driving scenario in which the chassis vibration frequency is less than the preset vibration frequency threshold and the road surface roughness is less than the preset roughness threshold is defined as a good road condition; wherein The preset vibration frequency threshold is proportional to the vehicle speed of the hybrid vehicle; and The preset noise control conditions include: The current driving scenario refers to the good road conditions. The in-vehicle noise data is greater than or equal to the first noise threshold corresponding to the good road conditions; and The battery charge is greater than a preset first charge threshold.

3. The control method for engine output of a hybrid vehicle as described in claim 1, characterized in that, In step S2, the scenario parameters include the traffic congestion and environmental noise of the current road segment where the hybrid vehicle is driving; wherein The congestion situation is obtained through at least one of the vehicle's digital map and the vehicle's camera. The vehicle's digital map displays the current road segment in green, yellow, and red, corresponding to congestion situations of smooth traffic, slow traffic, and congestion, respectively. The vehicle's camera acquires vehicle information from five directions: in front, to the left, to the right, to the left front, and to the right front. If there are no vehicles in any of the five directions, or only one direction has vehicles, the congestion situation is smooth traffic. If there are vehicles in two or three of the five directions, the congestion situation is slow traffic. If there are vehicles in four or all five directions, the congestion situation is congestion. The ambient noise is obtained through a noise sensor located on the exterior of the vehicle body.

4. The control method for engine output of a hybrid vehicle as described in claim 3, characterized in that, Determining the current driving scenario of the hybrid vehicle based on the scenario parameter data includes: The current driving scenario is defined as a congested and noisy road condition if the congestion situation is congested or requires slowing down, and / or the environmental noise is greater than or equal to a preset environmental noise threshold. The current driving scenario where the congestion is clear and the environmental noise is less than the environmental noise threshold is defined as a clear and quiet road condition; wherein... The preset environmental noise threshold is directly proportional to the speed of the hybrid vehicle; and The preset noise control conditions include: The current driving scenario is described as a smooth and quiet road condition. The in-vehicle noise data is greater than or equal to the second noise threshold corresponding to the smooth and quiet road conditions; The battery charge is greater than a preset second charge threshold.

5. The control method for engine output of a hybrid vehicle as described in claim 1, characterized in that, In step S2, the scenario parameters include the weather conditions and rainfall value of the current driving section of the hybrid vehicle; in The weather conditions are obtained via the vehicle-mounted communication network; The rainfall value is obtained through a rain sensor installed on the windshield of the hybrid vehicle; and Determining the current driving scenario of the hybrid vehicle based on the scenario parameter data includes: The current driving scenario is defined as windy and snowy weather if the weather conditions of the current driving section are obtained through the vehicle communication network as windy, snowy, or rainy, and / or the rainfall value is greater than or equal to a preset rainfall threshold. The current driving scenario is defined as quiet weather if the weather conditions of the current driving segment are obtained through the vehicle communication network as sunny or cloudy and the rainfall value is less than the rainfall threshold.

6. The control method for engine output of a hybrid vehicle as described in claim 5, characterized in that, The preset noise control conditions include: The current driving scenario is in quiet weather; The in-vehicle noise data is greater than or equal to the third noise threshold corresponding to the quiet weather; and The battery charge is greater than a preset third charge threshold.

7. The control method for engine output of a hybrid vehicle as described in claim 1, characterized in that, The scenario parameters also include the hybrid vehicle's speed and the road type of the current travel segment; among which The vehicle speed is obtained by a vehicle speed sensor installed in the powertrain of the hybrid vehicle; The road type is obtained through the vehicle-mounted digital map, and the road type includes highways, urban roads and rural roads; Determining the current driving scenario of the hybrid vehicle based on the data of the aforementioned scenario parameters also includes: The current driving scenario where the vehicle speed is greater than or equal to a preset vehicle speed threshold and the road type is the highway is defined as a highway condition. The current driving scenario where the vehicle speed is less than the vehicle speed threshold and / or the road type is the urban road or the rural road is determined as a medium-low speed road condition; The preset noise control conditions also include: The current driving scenario is the low-to-medium speed road condition; The in-vehicle noise data is greater than or equal to the fourth noise threshold corresponding to the low-to-medium speed road conditions; and The battery charge is greater than a preset fourth charge threshold.

8. The method for controlling the engine output of a hybrid vehicle as described in any one of claims 1-7, characterized in that, In step S1, the preset noise limit threshold is proportional to the speed of the hybrid vehicle. The battery charge level is obtained through a charge sensor installed in the onboard battery pack of the hybrid vehicle.

9. A vehicle controller, characterized in that, include: The memory is used to store the control program; A processor, which, when processing the control program, performs the steps of the control method for the engine output of a hybrid vehicle as described in any one of claims 1-8.

10. A hybrid vehicle, characterized in that, Includes the vehicle controller as described in claim 9.

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