CN118066026A - Engine speed control method, terminal, device and storage medium for hybrid vehicle - Google Patents
Engine speed control method, terminal, device and storage medium for hybrid vehicle Download PDFInfo
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Abstract
The invention discloses a method, a terminal, a device and a storage medium for controlling the engine speed of a hybrid vehicle, which are characterized by comprising the following steps: acquiring an environmental noise value of a vehicle; judging whether the environmental noise value is larger than a first threshold value or not; and releasing the rotation speed interval in response to determining that the ambient noise value is greater than or equal to the first threshold. The invention can flexibly adjust the limit of the engine speed interval and improve the electricity-retaining performance of the hybrid electric vehicle.
Description
Technical Field
The present invention relates to the field of engine control technologies, and in particular, to an engine speed control method, terminal, device, and storage medium for a hybrid vehicle.
Background
In consideration of NVH performance of the vehicle, currently, the optimal rotating speed point cannot be directly selected for the engine rotating speed control of the hybrid electric vehicle under the serial working condition, the engine rotating speed control is limited by a preset value, and the engine rotating speed control is only released to a certain extent when the power is seriously deficient or high-power is required, so that the engine rotating speed interval cannot be flexibly adjusted, and the electricity-retaining performance is poor.
Disclosure of Invention
The invention provides a method, a device, a terminal and a storage medium for adjusting the engine speed interval of a hybrid electric vehicle, which are used for solving the problems that the engine speed interval of the existing hybrid electric vehicle cannot be flexibly adjusted and the electricity retention performance is poor.
A first aspect of the present invention provides a method for adjusting an engine speed interval of a hybrid vehicle, including:
acquiring an environmental noise value of a vehicle;
judging whether the environmental noise value is larger than a first threshold value or not; and
And releasing the rotating speed interval in response to determining that the environmental noise value is greater than or equal to the first threshold.
In some embodiments, the releasing the rotation speed interval includes:
in response to determining that the ambient noise value is greater than or equal to the first threshold, determining again if the ambient noise value is greater than the first threshold over a preset time interval; and
And releasing the rotating speed interval in response to determining that the environmental noise value is greater than or equal to the first threshold again.
In some embodiments, the adjustment method further comprises:
in response to determining that the ambient noise value is less than the first threshold, the speed interval is maintained.
In some embodiments, the releasing the speed interval comprises:
Responsive to determining that the ambient noise value is greater than or equal to the first threshold and less than the second threshold, releasing the speed interval to the first level;
responsive to determining that the ambient noise value is greater than or equal to the second threshold and less than the third threshold, releasing the speed interval to a second level; and
Responsive to determining that the ambient noise value is greater than or equal to a third threshold, releasing the speed interval to a third level;
wherein the release amplitude of the first level is less than the release amplitude of the second level and the release amplitude of the second level is less than the release amplitude of the third level.
In some embodiments, the releasing the speed interval comprises:
Judging whether the battery residual capacity of a power battery of the hybrid vehicle is higher than a fourth threshold value;
responsive to determining that the remaining battery power is greater than or equal to a fourth threshold, releasing the speed interval to a fourth level; and
Responsive to determining that the remaining battery power is below a fourth threshold, releasing the speed interval to a fifth level;
wherein the release amplitude of the fourth level is smaller than the release amplitude of the fifth level.
In some embodiments, the releasing the speed interval comprises:
Judging whether the vehicle body vibration level of the hybrid vehicle is higher than a fifth threshold;
responsive to determining that the vehicle body vibration level is less than a fifth threshold, releasing the speed interval to a sixth level; and
Responsive to determining that the vehicle body vibration level is higher than or equal to a fifth threshold, releasing the speed interval to a seventh level;
wherein the release amplitude of the sixth level is smaller than the release amplitude of the seventh level.
In some embodiments, the ambient noise value is an in-vehicle noise value.
In some embodiments, the ambient noise value is an off-board noise value.
In some embodiments, the environmental noise value is an in-cabin noise value.
A second aspect of the present invention provides an engine speed interval adjustment device for a hybrid vehicle, including:
The environment noise acquisition module is used for acquiring the environment noise value of the vehicle;
The judging module is used for judging whether the environmental noise value is larger than a first threshold value or not; and
And the rotating speed interval adjusting module is used for releasing the rotating speed interval in response to the judgment module judging that the environmental noise value is greater than or equal to the first threshold value.
A third aspect of the present invention provides a terminal comprising a memory, a processor and a computer program stored in the memory and operable on the processor, the processor executing the computer program to perform the steps of the above-described method of adjusting an engine speed interval of a hybrid vehicle.
A fourth aspect of the present invention provides a readable storage medium storing a computer program which, when executed by a processor, implements the steps of the above-described method for adjusting an engine speed interval of a hybrid vehicle.
In one scheme provided by the method, the device, the terminal and the storage medium for adjusting the engine speed interval of the hybrid electric vehicle, the environmental noise in the running process of the vehicle is judged in real time, and the limit on the engine speed interval is relaxed when the environmental noise is higher than a preset threshold value, so that under the condition that the environmental noise is higher, the limit on the engine speed interval is flexibly adjusted by utilizing the condition that the sensitivity of passengers in the vehicle to the engine noise is reduced, and the electricity-retaining performance of the hybrid electric vehicle is improved.
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In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a computer device in one embodiment.
Fig. 2 is a flowchart of a method of adjusting an engine speed interval of a hybrid vehicle according to an embodiment of the present invention.
Fig. 3 is a detailed flow chart of step 30 in fig. 2.
Fig. 4 is a flowchart of a method of adjusting an engine speed interval of a hybrid vehicle in another embodiment of the invention.
Fig. 5, 6 and 7 are schematic flow diagrams of alternative implementation of step S30 in fig. 2.
Fig. 8 is a flowchart of a method of adjusting an engine speed interval of a hybrid vehicle in still another embodiment of the invention.
Fig. 9 is a block diagram showing the structure of an engine speed range adjustment device for a hybrid vehicle according to an embodiment of the present invention.
Fig. 10 is a schematic structural view of a terminal in an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
FIG. 1 is a block diagram of a computer device in one embodiment. As shown in fig. 1, the computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor is operative to provide computing and control capabilities to support operation of the entire computer device. The memory is used to store data, instruction code, and the like, and in one embodiment, the memory may include a non-volatile storage medium and an internal memory. The nonvolatile storage medium stores an operating system and computer executable instructions, and the computer executable instructions are used for realizing the method for adjusting the engine speed interval of the hybrid vehicle provided by the embodiment of the application, and the internal memory provides an environment for the operating system and the computer executable instructions in the nonvolatile storage medium. The network interface is used for network communication with other computer devices, such as obtaining rule template data, etc. The computer device can be a mobile phone, a tablet personal computer, PC (Personal Computer) and other terminals, a server and the like. It will be appreciated by those skilled in the art that the architecture shown in fig. 1 is merely a block diagram of some of the architecture relevant to the present inventive arrangements and is not limiting as to the computer device to which the present inventive arrangements may be implemented, as a particular computer device may include more or less components than those shown, or may be combined with some components, or may have a different arrangement of components.
The computer device in this embodiment may be a complete Vehicle Controller (VCU) on a vehicle, and in other embodiments, the terminal may be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices.
In one embodiment, as shown in fig. 2, a method for adjusting an engine speed interval of a hybrid vehicle is provided, and the method is applied to the whole vehicle controller in fig. 1, and includes the following steps:
s10: acquiring an environmental noise value of a vehicle;
specifically, the environmental noise value may be acquired by collecting noise in the vehicle as the environmental noise value through a noise sensor placed in the vehicle, by collecting the cabin noise value as the environmental noise value through a noise sensor placed in the cabin, or by collecting the vehicle exterior noise value as the environmental noise value through a noise sensor placed outside the vehicle. In some embodiments, the above-mentioned noise value in the vehicle, noise value in the cabin, and noise value outside the vehicle may also be taken into consideration as the environmental noise value, which is not limited herein.
S20: judging whether the environmental noise value is larger than a first threshold value or not;
specifically, a certain decibel value may be preset as the first threshold value, and compared with the first threshold value after the ambient noise value is acquired.
S30: and releasing the rotating speed interval in response to determining that the environmental noise value is greater than or equal to the first threshold.
Specifically, the vehicle control unit determines whether to permit release of the restriction on the engine speed interval based on the determination result, and if the environmental noise value is greater than or equal to the first threshold value, it is indicated that the current environment is noisy, possibly because the vehicle is traveling in downtown, or the vehicle is traveling in heavy rain, and if the sensitivity of the vehicle occupant to the noise of the engine is necessarily reduced, the restriction on the engine speed interval may be properly released.
In this embodiment, by the above method for adjusting the engine speed interval of the hybrid vehicle, the vehicle controller may determine environmental noise in the vehicle driving process in real time, and relax the limitation on the engine speed interval when the environmental noise is higher than the preset threshold, so that under the condition that the environmental noise is higher, the limitation on the engine speed interval is flexibly adjusted by using the condition that the sensitivity of the occupant in the vehicle to the engine noise is reduced, and the electricity-retaining performance of the hybrid vehicle is improved.
In an embodiment, as shown in fig. 3, in response to determining that the environmental noise value is greater than or equal to the first threshold in step S30, the releasing the rotation speed interval specifically includes:
S31: in response to determining that the ambient noise value is greater than or equal to the first threshold, determining again if the ambient noise value is greater than the first threshold over a preset time interval;
S32: and releasing the rotating speed interval in response to determining that the environmental noise value is greater than or equal to the first threshold again.
Specifically, when the environmental noise value is determined to be greater than or equal to the first threshold value, it is also possible that the environmental noise value is only accidentally greater than or equal to the first threshold value, and by setting the environmental noise value after a preset time interval, the environmental noise value is determined again, if the environmental noise value is found to be greater than or equal to the first threshold value, it is indicated that the current environmental noise value is a stable change, and at this time, the adjustment of the rotation speed interval is triggered.
In an embodiment, as shown in fig. 4, the above-mentioned method for adjusting an engine speed interval of a hybrid vehicle further includes:
S40: in response to determining that the ambient noise value is less than the first threshold, the speed interval is maintained.
Specifically, if the ambient noise value has not reached the first threshold, indicating that the current environment is relatively quiet, the sensitivity of the occupants in the vehicle to noise of the engine must be increased, and then the limitation of the engine speed interval is not released. In another embodiment, when the environmental noise value is determined to be greater than or equal to the first threshold value for the first time, the environmental noise value is determined again after a preset time interval, and the environmental noise value is found to not reach the first threshold value again, which indicates that the current change of the environmental noise value is an unstable change, and the limitation on the engine rotation speed interval is not released, so that the original rotation speed interval is maintained. Therefore, the increase of the occasional ambient noise value can be filtered, and the release limit on the engine rotating speed interval is prevented from being triggered when the ambient noise is unstable.
In one embodiment, as shown in fig. 5, the release speed interval of step S30 includes:
S301A: responsive to determining that the ambient noise value is greater than or equal to the first threshold and less than the second threshold, releasing the speed interval to the first level;
S302A: responsive to determining that the ambient noise value is greater than or equal to the second threshold and less than the third threshold, releasing the speed interval to a second level; and
S303A: responsive to determining that the ambient noise value is greater than or equal to a third threshold, releasing the speed interval to a third level;
wherein the release amplitude of the first level is less than the release amplitude of the second level and the release amplitude of the second level is less than the release amplitude of the third level.
After judging that the restriction on the engine speed section can be released, the corresponding release amplitude can be determined in consideration of the magnitude of noise. Specifically, three thresholds may be preset, namely, a first threshold, a second threshold and a third threshold in order from small to large, and when the environmental noise value reaches the corresponding threshold, the limitation on the engine speed interval is released according to the first level, the second level and the third level accordingly. The first level, the second level and the third level may be specific values which are sequentially increased, and the specific values are added to the basic engine speed interval to obtain the released engine speed interval; the coefficient may be sequentially increased and multiplied by the basic engine speed interval to obtain the released engine speed interval.
In one embodiment, as shown in fig. 6, the release speed interval of step S30 includes:
S301B: judging whether the battery residual capacity of a power battery of the hybrid vehicle is higher than a fourth threshold value;
S302B: responsive to determining that the remaining battery power is greater than or equal to a fourth threshold, releasing the speed interval to a fourth level; and
S303B: responsive to determining that the remaining battery power is below a fourth threshold, releasing the speed interval to a fifth level;
wherein the release amplitude of the fourth level is smaller than the release amplitude of the fifth level.
After determining that the restriction on the engine speed interval can be released, the corresponding release range may be determined in consideration of the magnitude of the battery remaining power of the power battery of the hybrid vehicle. Specifically, a fourth threshold value may be preset, and when the remaining battery power is higher than or equal to the fourth threshold value, the power-saving factor is not needed to be considered temporarily because the power battery power is higher, so that the rotation speed interval of the engine may be widened according to a fourth smaller level; when the remaining battery power is lower than the fourth threshold, the rotation speed interval of the engine may be widened according to the fifth larger level because the power-saving factor is more required to be considered.
When the SOC is lower than the SOC threshold value a (current balance point), the power conservation factor needs to be considered more because the electric quantity is lower, so the rotation speed control interval of the engine should be widened within a larger range: if the vehicle speed is higher than the vehicle speed threshold (determined according to the actual vehicle calibration), the required power is larger and the electricity retention performance is more likely to be considered, so that the release level B of the engine speed control section can be delta 1 (the maximum release range limit); if the vehicle speed is lower than the vehicle speed threshold (determined according to the actual vehicle calibration), taking the driving feeling influence into consideration, releasing the grade B to be delta 2
In one embodiment, as shown in fig. 7, the release speed interval of step S30 includes:
S301C: judging whether the vehicle body vibration level of the hybrid vehicle is higher than a fifth threshold;
S302C: responsive to determining that the vehicle body vibration level is less than a fifth threshold, releasing the speed interval to a sixth level; and
S303C: responsive to determining that the vehicle body vibration level is higher than or equal to a fifth threshold, releasing the speed interval to a seventh level;
wherein the release amplitude of the sixth level is smaller than the release amplitude of the seventh level.
After determining that the restriction on the engine speed range can be released, the corresponding release range may be determined in consideration of the magnitude of the vehicle body vibration of the hybrid vehicle. Specifically, a fifth threshold value may be preset, and vibration conditions of the vehicle body may be collected by providing vibration sensors at appropriate positions on the vehicle body; when the vibration intensity is lower than a fifth threshold value, releasing the rotating speed interval to a sixth grade which is smaller; and when the vibration intensity reaches or exceeds the fifth threshold value, releasing the rotating speed interval to a larger seventh level. In this way, when the vehicle travels on a road surface with poor road conditions and the vibration is strong, the restriction of the rotation speed section to a higher level can be properly released.
In some embodiments, the release amplitude of the engine speed interval may also be determined by considering the noise, the residual electric quantity and the vehicle body vibration at the same time, or may also be determined based on the concept of the present invention, and other factors are considered, which will not be described herein.
In one embodiment, the ambient noise value is an in-vehicle noise value.
In one embodiment, the ambient noise value is an off-board noise value.
In one embodiment, the ambient noise value is an in-cabin noise value.
As shown in fig. 8, in one embodiment, the releasing rotation speed interval of step S30 further includes:
S40': judging whether the environmental noise value is larger than a first threshold value or not;
S50': and in response to determining that the environmental noise value is less than the first threshold, limiting the speed interval.
Specifically, after the limitation on the rotation speed interval is released, the present solution still continuously collects the environmental noise condition to continuously make the judgment. When the vehicle controller judges that the environmental noise is lower than the first threshold, the current environmental noise is reduced, the sensitivity of the passengers in the vehicle to the noise of the engine is necessarily increased, and the limitation of the engine speed interval, namely the limited speed interval, can be properly increased.
In some embodiments, the above-mentioned embodiments may also be referred to, and the reduction amplitude of the engine speed interval is determined from the noise, the residual electric quantity and the vehicle body vibration, that is, the reverse process of the above-mentioned embodiments about how to release the speed interval limitation is not repeated here.
The method has certain timeliness for identifying and predicting the current driving working condition according to the driving environment; the whole vehicle controller of the invention adjusts the engine speed interval control (namely adjusts the power generation strategy) under the serial working condition in real time, and can release the limited capacity of the engine within a larger limit range; meanwhile, the invention carries out the gear shifting on the release of the rotating speed interval from multiple dimensions, more reasonably utilizes the decoupling advantage of the engine and the wheel end under the serial working condition on the basis of ensuring higher driving feeling, obtains the optimal power generation and improves the electricity-retaining performance.
As shown in fig. 9, an embodiment of the present invention further provides an apparatus for adjusting an engine speed interval of a hybrid vehicle, including:
An environmental noise acquisition module 91 for acquiring an environmental noise value of the vehicle;
A determining module 92, configured to determine whether the environmental noise value is greater than a first threshold; and
The rotation speed interval adjusting module 93 is configured to release the rotation speed interval in response to the judging module judging that the environmental noise value is greater than or equal to the first threshold.
As shown in fig. 10, an embodiment of the present invention further provides a terminal, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the steps of the method for adjusting an engine speed interval of the hybrid vehicle.
An embodiment of the present invention also provides a readable storage medium storing a computer program which, when executed by a processor, implements the steps of the aforementioned method for adjusting an engine speed interval of a hybrid vehicle.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include non-volatile and/or volatile memory.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.
Claims (12)
1. A method for adjusting an engine speed interval of a hybrid vehicle, comprising:
acquiring an environmental noise value of the vehicle;
Judging whether the environmental noise value is larger than a first threshold value or not; and
And releasing the rotating speed interval in response to judging that the environmental noise value is greater than or equal to the first threshold value.
2. The method of adjusting as set forth in claim 1, wherein releasing the rotation speed interval in response to determining that the ambient noise value is greater than or equal to the first threshold value comprises:
responsive to determining that the ambient noise value is greater than or equal to the first threshold, determining again if the ambient noise value is greater than the first threshold over a preset time interval; and
And releasing the rotating speed interval in response to judging that the environmental noise value is greater than or equal to the first threshold value again.
3. The adjustment method as set forth in claim 1, further comprising:
In response to determining that the ambient noise value is less than the first threshold, the speed interval is maintained.
4. The method of adjusting as defined in claim 1, wherein said releasing said rotation speed interval comprises:
Releasing the rotation speed interval to a first level in response to determining that the ambient noise value is greater than or equal to the first threshold and less than a second threshold;
releasing the rotation speed interval to a second level in response to determining that the ambient noise value is greater than or equal to the second threshold and less than a third threshold; and
Releasing the rotation speed interval to a third level in response to determining that the ambient noise value is greater than or equal to the third threshold;
Wherein the release amplitude of the first level is less than the release amplitude of the second level and the release amplitude of the second level is less than the release amplitude of the third level.
5. The method of adjusting as defined in claim 1, wherein said releasing said rotation speed interval comprises:
Judging whether the battery residual capacity of a power battery of the hybrid vehicle is higher than a fourth threshold value;
releasing the rotation speed interval to a fourth level in response to determining that the battery remaining electric power is higher than or equal to the fourth threshold; and
Releasing the rotation speed interval to a fifth level in response to determining that the battery remaining power is below the fourth threshold;
Wherein the release amplitude of the fourth level is smaller than the release amplitude of the fifth level.
6. The method of adjusting as defined in claim 1, wherein said releasing said rotation speed interval comprises:
judging whether the vehicle body vibration level of the hybrid vehicle is higher than a fifth threshold value;
Releasing the rotation speed interval to a sixth level in response to determining that the vehicle body vibration level is less than the fifth threshold; and
Releasing the rotation speed interval to a seventh level in response to determining that the vehicle body vibration level is higher than or equal to the fifth threshold;
Wherein the release amplitude of the sixth level is smaller than the release amplitude of the seventh level.
7. The method of claim 1, wherein the ambient noise value is an in-vehicle noise value.
8. The method of claim 1, wherein the ambient noise value is an off-board noise value.
9. The method of claim 1, wherein the ambient noise value is an in-cabin noise value.
10. An engine speed range adjustment device for a hybrid vehicle, comprising:
the environment noise acquisition module is used for acquiring the environment noise value of the vehicle;
the judging module is used for judging whether the environmental noise value is larger than a first threshold value or not; and
And the rotating speed interval adjusting module is used for releasing the rotating speed interval in response to the judging module judging that the environmental noise value is greater than or equal to a first threshold value.
11. A terminal comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor, when executing the computer program, carries out the steps of the method for adjusting the engine speed interval of a hybrid vehicle according to any one of claims 1 to 9.
12. A readable storage medium storing a computer program, wherein the computer program when executed by a processor implements the steps of the interface display control method according to any one of claims 1 to 9.
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