Vehicle engine control method and device, electronic equipment and storage medium

Abstract

The invention relates to the technical field of vehicle engine control, and discloses a vehicle engine control method and device, electronic equipment and a storage medium. When the current working state is a warm-up state, the current air inflow influence parameter of the position where the vehicle is located and the current water temperature of the engine are obtained, and the current maximum power of the engine is obtained according to the current air inflow influence parameter and the current water temperature; wherein the combination of the air inflow influence parameter and the water temperature has a preset relation with the maximum power; the current preset power of the engine is determined according to a preset control strategy, the current preset power is corrected through the current maximum power to obtain target power, and the engine is controlled to work at the target power; wherein the target power is smaller than or equal to the current maximum power. Therefore, the target power is obtained through the current maximum power, so that PN emission is reduced when the engine works at the target power.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle engine control, and in particular to a vehicle engine control method, device, electronic device and storage medium. Background Art

[0002] When the engine is in the warm-up stage after cold start in a low air intake environment (especially in plateau environment), the engine load increases due to the relatively small engine intake volume. In addition, the engine water temperature is low and the optimal operating condition is not reached, so the engine PN emissions are relatively serious.

[0003] At present, the engine power may be high even in the startup phase. Especially in hybrid vehicles, when the engine generates electricity, the engine power is often related to the vehicle speed, and the higher the vehicle speed, the greater the engine power. At this time, the engine is running at high power during the warm-up phase, which will cause more serious PN emissions. Summary of the invention

[0004] In view of the above problems, the present application provides a vehicle engine control method, device, electronic device and storage medium, which obtain the target power through the current maximum power, so that the PN emission of the engine is reduced when it works at the target power.

[0005] The first aspect of the present application provides a vehicle engine control method, comprising: obtaining a current operating state of the vehicle's engine, and when the current operating state is a warm-up state, obtaining a current air intake volume influencing parameter at the vehicle's position and a current water temperature of the engine, and obtaining a current maximum power of the engine based on the current air intake volume influencing parameter and the current water temperature; wherein a combination of the air intake volume influencing parameter and the water temperature has a preset relationship with the maximum power; determining a current preset power of the engine based on a preset control strategy, correcting the current preset power by the current maximum power to obtain a target power, and controlling the engine to operate at the target power; wherein the target power is less than or equal to the current maximum power.

[0006] In some specific embodiments, after determining the current preset power of the engine according to a preset control strategy and correcting the current preset power by the current maximum power to obtain the target power, it also includes: obtaining a speed correction value according to the target power and the current intake volume influencing parameter; wherein a preset relationship exists between the combination of the target power and the current intake volume influencing parameter and the speed correction value; correcting the current preset speed by the speed correction value to obtain the target speed, and controlling the engine to operate at the target speed; wherein the current preset speed is determined according to the target power and the preset control strategy.

[0007] In some specific embodiments, the step of obtaining the current maximum power of the engine based on the current air intake influencing parameter and the current water temperature includes: determining a preset air intake influencing parameter range in which the current air intake influencing parameter is located, and determining a preset water temperature range in which the current water temperature is located; wherein, there are multiple preset air intake influencing parameter ranges and preset water temperature ranges and they do not overlap with each other; determining the current maximum power of the engine based on the preset air intake influencing parameter range and the preset water temperature range; wherein, different combinations of the preset air intake influencing parameter range and the preset water temperature range correspond to different current maximum powers.

[0008] In some specific embodiments, the step of determining the current maximum power of the engine according to the preset air intake volume influencing parameter range and the preset water temperature range includes: if the preset air intake volume influencing parameter range is the first preset air intake volume influencing parameter range, and the preset water temperature range is the first preset water temperature range, then determining the current maximum power of the engine to be the first current maximum power; if the preset air intake volume influencing parameter range is the first preset air intake volume influencing parameter range, and the preset water temperature range is the second preset water temperature range, then determining the current maximum power to be the second current maximum power; wherein, the average water temperature of the first preset water temperature range is lower than the average water temperature of the second preset water temperature range, and the first current maximum power is lower than the second current maximum power; if the preset air intake volume influencing parameter range is the second preset air intake volume influencing parameter range, and the preset water temperature range is the first preset water temperature range, then determining the current maximum power to be the third current maximum power; wherein, the average air intake corresponding to the first preset air intake volume influencing parameter range is higher than the average air intake corresponding to the second preset air intake volume influencing parameter range, and the first current maximum power is higher than the third current maximum power.

[0009] In some specific embodiments, the step of determining the current maximum power of the engine according to the preset air intake volume influencing parameter range and the preset water temperature range includes: determining the corresponding current maximum power range according to the preset air intake volume influencing parameter range and the preset water temperature range, and determining the current power of the vehicle's battery pack; wherein, different combinations of the preset air intake volume influencing parameter range and the preset water temperature range correspond to different current maximum power ranges; if the current power is lower than the preset threshold power, the highest power in the current maximum power range is used as the current maximum power; the step of controlling the engine to operate at a target power includes: controlling the engine to operate at a target power, so as to generate electricity by driving the vehicle's generator through the engine.

[0010] In some specific embodiments, the step of obtaining a speed correction value based on the target power and the current intake volume influencing parameter includes: determining a preset target power range in which the target power is located, and determining a preset intake volume influencing parameter range in which the current intake volume influencing parameter is located; determining a speed correction value based on the preset target power range and the preset intake volume influencing parameter range; wherein, there is a preset relationship between a combination of the preset target power range and the preset intake volume influencing parameter range and the speed correction value, and when the preset target power range is certain, the lower the average intake volume corresponding to the preset intake volume influencing parameter range, the higher the speed correction value.

[0011] In some specific embodiments, after the step of obtaining the speed correction value according to the target power and the current intake volume influencing parameters, it includes: obtaining the current vehicle speed; if the current vehicle speed is greater than the preset speed, determining the speed increment according to the current vehicle speed, and taking the sum of the speed correction value and the speed increment as the updated speed correction value; wherein, there is a preset relationship between the vehicle speed and the speed increment, and the higher the vehicle speed, the higher the corresponding speed increment; the step of correcting the current preset speed by the speed correction value to obtain the target speed includes: correcting the current preset speed by the updated speed correction value to obtain the target speed.

[0012] A second aspect of the present application provides a vehicle engine control device, including: an acquisition module, used to acquire the current operating state of the vehicle's engine, and when the current operating state is a warm-up state, acquire the current air intake volume influencing parameter of the vehicle's position and the current water temperature of the engine, and acquire the current maximum power of the engine based on the current air intake volume influencing parameter and the current water temperature; wherein, there is a preset relationship between the combination of the air intake volume influencing parameter and the water temperature and the maximum power; a control module, determining the current preset power of the engine according to a preset control strategy, correcting the current preset power by the current maximum power to obtain a target power, and controlling the engine to operate at the target power; wherein the target power is less than or equal to the current maximum power.

[0013] A third aspect of the present application provides an electronic device, comprising: a processor; and a memory for storing a computer program, wherein when the computer program is executed by the processor, any of the above-mentioned vehicle engine control methods is implemented.

[0014] A fourth aspect of the present application provides a computer-readable storage medium, characterized in that a computer program is stored in the storage medium, and when the computer program is executed by a processor, a vehicle engine control method as described above is implemented.

[0015] The present application has at least the following beneficial technical effects: Based on the vehicle engine control method, device, electronic device and storage medium provided by the present application, the method includes: obtaining the current working state of the vehicle engine, and when the current working state is the warm-up state, obtaining the current air intake volume influencing parameter of the vehicle position and the current water temperature of the engine, and obtaining the current maximum power of the engine according to the current air intake volume influencing parameter and the current water temperature; wherein, there is a preset relationship between the combination of the air intake volume influencing parameter and the water temperature and the maximum power; determining the current preset power of the engine according to the preset control strategy, correcting the current preset power by the current maximum power to obtain the target power, and controlling the engine to work at the target power; wherein, the target power is less than or equal to the current maximum power. Therefore, the target power is obtained by the current maximum power, so that the PN emission is reduced when the engine works at the target power.

[0016] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are only used to illustrate the embodiments and are not to be considered as limiting the present application. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings. In the accompanying drawings:

[0018] Figure 1 It is a flow chart of an embodiment of a vehicle engine control method provided by the present application;

[0019] Figure 2 It is a schematic diagram of the engine's emissions before and after the application of the method of the application;

[0020] Figure 3 is a flow chart of another embodiment of the vehicle engine control method provided by the present application;

[0021] Figure 4 is a flow chart of another embodiment of a vehicle engine control method provided by the present application;

[0022] Figure 5 is a flow chart of another embodiment of a vehicle engine control method provided by the present application;

[0023] Figure 6 is a flow chart of another embodiment of a vehicle engine control method provided by the present application;

[0024] Figure 7is a flow chart of another embodiment of the vehicle engine control method provided by the present application;

[0025] Figure 8 is a flow chart of another embodiment of a vehicle engine control method provided by the present application;

[0026] Fig. 9 is a structural block diagram of an embodiment of a vehicle engine control device provided by the present application;

[0027] Fig.10 It is a schematic diagram of the structural framework of an embodiment of the electronic device provided by the present application;

[0028] Fig.11 It is a schematic diagram of the structural framework of an embodiment of the computer-readable storage medium provided by the present application. DETAILED DESCRIPTION

[0029] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0030] If there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0031] A first aspect of the present application provides a method for controlling a vehicle engine. Figure 1 1 is a flow chart of an embodiment of a vehicle engine control method provided by the present application. Figure 1 , the method comprises the following steps:

[0032] S101: Obtain the current operating state of the vehicle's engine, and when the current operating state is a warm-up state, obtain the current air intake volume influencing parameters of the vehicle's position and the current water temperature of the engine, and obtain the current maximum power of the engine based on the current air intake volume influencing parameters and the current water temperature; wherein a combination of the air intake volume influencing parameters and the water temperature has a preset relationship with the maximum power.

[0033] After a cold start, the vehicle engine will be in a warm-up state for a period of time. In this state, the engine water temperature is low and the engine PN emissions are more serious. Among them, the engine PN emissions refer to the engine's particulate matter emissions.

[0034] In some application scenarios, the engine water temperature can be detected to detect whether the engine is in a warm-up state. Generally speaking, when the engine water temperature is lower than 70°C, the engine is considered to be in a warm-up state.

[0035] When the current working state of the engine is in the warm-up state, the PN emission of the engine is relatively serious. If in an area with a lower altitude (i.e., higher air pressure), even if the engine is in the warm-up stage and its PN emission is relatively high, this application also regards it as an acceptable state. However, in high-altitude areas (low-pressure areas), PN emissions will further deteriorate, so this application has made targeted processing of the engine control strategy in high-altitude areas, thereby optimizing the emissions of the engine in the warm-up stage in high-altitude areas.

[0036] Among them, the air intake volume influencing parameter is a parameter that affects the air intake volume per unit time when the engine is working. When other parameters remain unchanged, the air intake volume influencing parameter will correspond to the size of the engine's air intake volume. The current air intake volume parameter is the air intake volume influencing parameter corresponding to the vehicle's current position. Since factors such as altitude and air pressure can affect the engine's air intake, the air intake volume influencing parameter may include altitude parameters and air pressure parameters. Of course, the air intake volume influencing parameter may also include some other parameters that affect the engine's air intake volume, which are not specifically limited here. When the engine air intake volume parameter is an altitude or air pressure parameter, the air pressure or altitude can be obtained by obtaining the vehicle's position, or the air pressure or altitude can be obtained directly, which is not specifically limited here.

[0037] This application aims at the situation where PN emissions are further deteriorated when the engine is in the warm-up stage in low air intake areas. It will obtain the current maximum power of the engine based on the current water temperature of the engine and the current air intake influencing parameters, and then limit the engine power to reduce emissions.

[0038] It should be understood that the engine water temperature refers to the water temperature of the engine coolant. In the warm-up state, the engine water temperature can reflect the working state of the engine. The engine water temperature will increase as the engine works. Generally speaking, the lower the engine water temperature, the more serious the emissions. In addition, when the vehicle is in different air intake areas, the working state of the engine is also different, that is, the engine air intake will be greatly affected, which will affect the engine emissions.

[0039] Therefore, the present application obtains the current maximum power of the engine through the current intake volume influencing parameters and the current water temperature, so that the setting of the current maximum power is more in line with the actual working state of the vehicle, so as to effectively reduce the emissions of the engine.

[0040] There may be multiple combinations of air intake influencing parameters and water temperature, and different combinations correspond to different maximum powers. After obtaining the current air intake influencing parameters and the current water temperature, the combination to which the current air intake influencing parameters and the current water temperature belong is determined, and the corresponding current maximum power can be further determined based on the corresponding relationship.

[0041] It should be understood that in order to be applicable to the setting of the current maximum power of the engine in plateau areas and to solve the problem of more serious emissions during the warm-up phase in high-altitude areas, in the preset relationship between the combination of the intake volume influencing parameter and the water temperature and the maximum power, if the intake volume influencing parameter is an altitude parameter, then the altitude parameter can be greater than the preset altitude; if the intake volume influencing parameter is an air pressure parameter, then the air pressure parameter can be less than the preset air pressure. The preset altitude and the preset air pressure are preset according to actual needs, for example, the preset air pressure can be 900hpa, but it is not limited thereto.

[0042] S102: Determine the current preset power of the engine according to the preset control strategy, correct the current preset power by the current maximum power to obtain the target power, and control the engine to operate at the target power; wherein the target power is less than or equal to the current maximum power.

[0043] The preset control strategy may be a control strategy for an engine in the prior art, in which a preset power of the engine is set corresponding to the vehicle operating state. In the existing engine control process, the current preset power of the engine can be obtained through the specific operating state of the vehicle and the preset control strategy, and then the engine can be controlled to operate at the current preset power. For example, in a hybrid vehicle, the preset control strategy may be a control strategy for controlling engine power generation, in which case the current preset power is determined based on the vehicle speed, and generally speaking, the higher the vehicle speed, the higher the current preset power.

[0044] However, based on the control method of the present application, after the current preset power of the engine is determined according to the preset control strategy, the engine will not be directly controlled to operate at the current preset power, but the current preset power will be further corrected by the current maximum power to obtain the target power, and finally the engine will be controlled to operate at the target power.

[0045] It should be understood that after the current preset power is corrected by the current maximum power, a target power that is less than the current maximum power will eventually be obtained. This embodiment only limits the maximum value of the target power, that is, the maximum value of the target power will not exceed the current maximum power, and does not make specific restrictions on the target power. However, this embodiment provides a specific setting method for the target power for reference: if the current preset power is greater than the current maximum power, the current maximum power can be used as the target power; if the current preset power is less than or equal to the current maximum power, the current preset power can be used as the target power.

[0046] Figure 2 It is a schematic diagram of engine emissions before and after the application of the application method.

[0047] Combination Figure 2 The horizontal axes of the two emission graphs in the figure are the working time of the engine. The emission graph on the left is the emission graph before applying the method of the present application, and the emission graph on the right is the emission graph after applying the method of the present application.

[0048] Among them, curves 111 and 113 in the emission diagram are vehicle speed curves (the ordinate represents the size of the vehicle speed), and curves 111 and 113 are the same vehicle speed curves (the same control method is used to make the vehicle speed curves consistent, and if there are slight differences, they can be regarded as consistent). Curves 112 and 114 are PN emission curves, representing PN emissions when the vehicle travels according to the vehicle speed curve, and the ordinate represents the size of PN emissions.

[0049] It can be seen from the figure that the emission curves before and after the application of this method are significantly different, and the emission value of the peak point A of the PN emission curve 112 is much higher than the emission value of the peak point B of the curve 114. Figure 2 In the emission data table in the upper middle part, the first row represents the emission parameter information of the PN emission curve 112, the second row represents the emission parameter information of the PN emission curve 114, and the last column represents the PN emission amount. Figure 2 It can be seen that the PN emission corresponding to the PN emission curve 112 is 1.46*10 12 , and the PN emission corresponding to PN emission curve 114 is 1.41*10 11 Therefore, the PN emission before applying the method of the present application is less than the PN emission after applying the method of the present application, and the difference between the two is more than ten times, which significantly reduces PN emission.

[0050] In summary, based on this embodiment, the current maximum power is obtained through the current air intake volume influencing parameters and the current water temperature, and the setting of the current maximum power is in line with the actual working state of the vehicle. After the target power is obtained through the current maximum power, the target power is relatively small, which meets the requirements for PN emissions under the current working state, and can reduce the PN emissions of the engine.

[0051] Figure 3 FIG. 1 is a flow chart of another embodiment of the vehicle engine control method provided by the present application. Figure 3 In some specific embodiments, after determining the current preset power of the engine according to the preset control strategy and correcting the current preset power by the current maximum power to obtain the target power, the method further includes:

[0052] S201: Obtaining a rotation speed correction value according to a target power and a current air intake volume influencing parameter; wherein a preset relationship exists between a combination of the target power and the current air intake volume influencing parameter and the rotation speed correction value.

[0053] After the target power is determined, this embodiment further obtains the rotation speed correction value according to the target power and the current air intake volume influencing parameter. In the preset relationship, there may be multiple combinations of the target power and the current air intake volume influencing parameter, and different combinations may correspond to different rotation speed correction values.

[0054] After the target power and the current air intake volume influencing parameters are obtained, the combination of the target power and the current air intake volume influencing parameters can be determined, and then the speed correction value corresponding to the combination can be determined according to a preset relationship.

[0055] S202: Correcting the current preset speed by the speed correction value to obtain a target speed, and controlling the engine to operate at the target speed; wherein the current preset speed is determined according to the target power and the preset control strategy.

[0056] After determining the speed correction value, this step further corrects the current preset speed by the speed correction value to obtain the target speed. It should be understood that the target speed corresponds to the target power, and controlling the engine to work at the target speed means controlling the engine to work at the target power and the target speed.

[0057] It should be understood that in the preset control strategy, there is a corresponding relationship between the preset power and the preset speed, that is, different powers correspond to different speeds. Therefore, after determining the target power, the preset speed can be obtained by the target power and the relationship between the power and the speed in the preset control strategy. At this time, the preset speed obtained is the speed obtained by power in the prior art, and this application will not use it directly, but will use the speed correction value to correct the current preset speed to obtain the target speed.

[0058] In some specific application scenarios, the speed correction value we determine is a positive speed value. During the correction process, the speed correction value is added to the current preset speed to obtain the target speed, so that the engine can operate at a higher speed to increase the intake volume and thus reduce emissions.

[0059] Figure 4 FIG. 1 is a flow chart of another embodiment of the vehicle engine control method provided by the present application. Figure 4 In some specific embodiments, the step of obtaining the current maximum power of the engine according to the current intake volume influencing parameter and the current water temperature includes:

[0060] S301: Determine a preset air intake volume influencing parameter range of a current air intake volume influencing parameter, and determine a preset water temperature range of a current water temperature; wherein, there are multiple preset air intake volume influencing parameter ranges and preset water temperature ranges that do not overlap with each other.

[0061] In this embodiment, the preset relationship between the combination of the air intake influencing parameter and the water temperature and the maximum power is specifically manifested as the corresponding relationship between the combination of the preset air intake influencing parameter range and the preset water temperature range and the maximum power.

[0062] Among them, the maximum value of the preset air intake volume influencing parameter range is greater than the preset air intake volume influencing parameter, and multiple preset air intake volume influencing parameters can constitute a continuous air intake volume influencing parameter range. The maximum value of the preset water temperature range is less than the highest water temperature in the warm-up stage, and multiple preset water temperature ranges constitute a continuous water temperature range. In combination with the above content, the maximum value of the preset water temperature range can be less than 70°C.

[0063] S302: Determine the current maximum power of the engine according to the preset air intake volume influencing parameter range and the preset water temperature range; wherein different combinations of the preset air intake volume influencing parameter range and the preset water temperature range correspond to different current maximum powers.

[0064] After determining the preset air intake volume influencing parameter range and the preset water temperature range, the current maximum power can be determined based on the combination and corresponding relationship between the two.

[0065] Figure 5 FIG. 1 is a flow chart of another embodiment of the vehicle engine control method provided by the present application. Figure 5 In combination with the above embodiments, in some specific embodiments, the step of determining the current maximum power of the engine according to the preset air intake volume influencing parameter range and the preset water temperature range includes:

[0066] S401: If the preset air intake volume influencing parameter range is the first preset air intake volume influencing parameter range, and the preset water temperature range is the first preset water temperature range, it is determined that the current maximum power of the engine is the first current maximum power.

[0067] This embodiment is provided with a first preset air intake volume influencing parameter range and a second preset air intake volume influencing parameter range, and is provided with a first preset water temperature range and a second preset water temperature range.

[0068] In the corresponding relationship, the combination of the first preset air intake volume influencing parameter range and the first preset water temperature range is made to correspond to the first current maximum power. Therefore, if the preset air intake volume influencing parameter range is the first preset air intake volume influencing parameter range, and the preset water temperature range is the first preset water temperature range, then it is determined that the current maximum power of the engine is the first current maximum power.

[0069] S402: If the preset air intake volume influencing parameter range is the first preset air intake volume influencing parameter range, and the preset water temperature range is the second preset water temperature range, then the current maximum power is determined to be the second current maximum power; wherein the average water temperature in the first preset water temperature range is lower than the average water temperature in the second preset water temperature range, and the first current maximum power is lower than the second current maximum power.

[0070] In the corresponding relationship, a combination of the first preset air intake volume influencing parameter range and the second preset water temperature range is made to correspond to the second current maximum power.

[0071] Among them, when the water temperature average value of the first preset water temperature range is lower than the water temperature average value of the second preset water temperature range, the first current maximum power is lower than the second current maximum power. Therefore, this rule can be obtained: when the preset air intake volume influencing parameter range is the same, the higher the preset water temperature range, the higher the corresponding current maximum power. At this time, both the emission requirements of the engine and the power output requirements of the engine can be met.

[0072] S403: If the preset air intake volume influencing parameter range is the second preset air intake volume influencing parameter range, and the preset water temperature range is the first preset water temperature range, then it is determined that the current maximum power is the third current maximum power; wherein, the average air intake volume corresponding to the first preset air intake volume influencing parameter range is higher than the average air intake volume corresponding to the second preset air intake volume influencing parameter range, and the first current maximum power is higher than the third current maximum power.

[0073] In the corresponding relationship, a combination of the second preset air intake volume influencing parameter range and the first preset water temperature range is made to correspond to the third current maximum power.

[0074] Among them, when the average value of the intake volume corresponding to the first preset intake volume influencing parameter range is higher than the average value of the intake volume corresponding to the second preset intake volume influencing parameter range, the first current maximum power is higher than the third current maximum power. Therefore, this rule can be obtained: when the preset water temperature range is the same, the preset intake volume influencing parameter range with a lower average intake volume has a lower corresponding current maximum power.

[0075] Therefore, this embodiment provides a specific relationship between a combination of a preset air intake volume influencing parameter range and a preset water temperature range and the maximum power, which is more in line with specific application scenarios.

[0076] Figure 6 FIG. 1 is a flow chart of another embodiment of the vehicle engine control method provided by the present application. Figure 6 In some specific embodiments, the step of determining the current maximum power of the engine according to the preset air intake volume influencing parameter range and the preset water temperature range includes:

[0077] S501: Determine the corresponding current maximum power range based on the preset air intake volume influencing parameter range and the preset water temperature range, and determine the current power level of the vehicle's battery pack; wherein different combinations of the preset air intake volume influencing parameter range and the preset water temperature range correspond to different current maximum power ranges.

[0078] In this embodiment, the combination of the preset air intake volume influencing parameter range and the preset water temperature range corresponds to a maximum power range, rather than a specific power value. Therefore, in the subsequent working process, it is necessary to select a value in the current maximum power range as the current maximum power.

[0079] This embodiment selects the maximum power according to the power level of the battery pack of the vehicle, so this step determines the current power level of the battery pack.

[0080] S502: If the current power level is lower than the preset threshold power level, the highest power in the current maximum power range is used as the current maximum power.

[0081] It should be understood that this embodiment is applied in the application scenario of generating electricity through the engine. When the current power is lower than the preset threshold power, it means that the power of the battery pack is low. When we take the highest power in the current maximum power range as the current maximum power, we can subsequently control the engine to work at a higher power, so that the generator generates more electricity, and the power of the battery pack is maintained at a higher power.

[0082] The step of controlling the engine to operate at a target power includes: controlling the engine to operate at the target power to generate electricity through a generator driving the vehicle through the engine.

[0083] In combination with the above, since this embodiment is applied to a scenario where power is generated by an engine, when the engine is controlled to operate at a target power in this step, the purpose is to drive the generator to generate power by the engine.

[0084] Figure 7 FIG. 1 is a flow chart of another embodiment of the vehicle engine control method provided by the present application. Figure 7 In combination with the above embodiments, in some specific embodiments, the step of obtaining the rotation speed correction value according to the target power and the current intake air volume influencing parameter includes:

[0085] S601: Determine a preset target power range in which the target power is located, and determine a preset air intake volume influencing parameter range in which the current air intake volume influencing parameter is located.

[0086] In this embodiment, the relationship between the combination of the target power and the air intake volume influencing parameter and the speed correction value is specifically manifested as the corresponding relationship between the combination of the preset target power range and the preset air intake volume influencing parameter range and the speed correction value. In this step, firstly, the target power and the current air intake volume influencing parameter are obtained, and the preset target power range and the preset air intake volume influencing parameter range corresponding thereto are obtained respectively.

[0087] Among them, the preset target power range and the preset intake volume influencing parameter range are pre-set. Therefore, after determining the target power and the current intake volume influencing parameter, the preset target power range and the preset intake volume influencing parameter range respectively can be determined.

[0088] S602: Determine a speed correction value based on a preset target power range and a preset air intake volume influencing parameter range; wherein, a preset relationship exists between a combination of the preset target power range and the preset air intake volume influencing parameter range and the speed correction value, and when the preset target power range is constant, the lower the average air intake volume corresponding to the preset air intake volume influencing parameter range is, the higher the speed correction value is.

[0089] In combination with the corresponding relationship, the speed correction value can be determined by the preset target power range and the preset intake volume influencing parameter range.

[0090] In this embodiment, the specific expression form of the preset relationship is specifically defined, that is, when the preset target power range is certain, the speed correction value corresponding to the preset air intake volume influence parameter range with a lower average air intake volume is higher. Through this setting method, the engine speed is higher in the low air intake volume area with higher altitude, so that the engine air intake volume is higher, thereby meeting the air intake volume demand in the high altitude and low area, so that the fuel is fully burned and the engine emissions are reduced.

[0091] Figure 8FIG. 1 is a flow chart of another embodiment of the vehicle engine control method provided by the present application. Figure 8 In combination with the above embodiments, in some specific embodiments, after the step of obtaining the rotation speed correction value according to the target power and the current intake air volume influencing parameter, the following steps are included:

[0092] S701: Obtain the current speed of the vehicle.

[0093] In this embodiment, the rotation speed correction value is updated according to the current vehicle speed, so that the updated rotation speed correction value is more in line with actual needs.

[0094] S702: If the current speed of the vehicle is greater than the preset speed, the speed increment is determined according to the current speed, and the sum of the speed correction value and the speed increment is used as the updated speed correction value; wherein there is a preset relationship between the speed and the speed increment, and the higher the speed, the higher the corresponding speed increment.

[0095] It should be understood that when the engine speed increases, the engine noise will increase, which may cause the vehicle's NVH (Noise, Vibration, Harshness) performance to deteriorate. When the vehicle speed is low and the engine speed increases, passengers will noticeably feel the vehicle's vibration, noise, etc., resulting in poor NVH performance. However, when the vehicle speed is high and the engine speed increases, passengers' perception of vibration and noise is weaker, and the vehicle can still maintain good NVH performance.

[0096] The preset speed is preset and can be a relatively large speed. If the current speed of the vehicle is greater than the preset speed, it means that the current speed of the vehicle is relatively high. At this time, even if we set the speed correction value to be larger, the NVH performance of the vehicle can be maintained at a good level. Therefore, in order to make the engine intake more and further reduce the vehicle's emissions, the speed increment is determined according to the current speed, thereby increasing the speed correction value.

[0097] The higher the vehicle speed, the weaker the vehicle's perception of vibration and noise. Therefore, the higher the vehicle speed, the larger the speed increment can be set, thereby making the speed correction value larger.

[0098] The step of correcting the current preset speed by the speed correction value to obtain the target speed includes: correcting the current preset speed by the updated speed correction value to obtain the target speed.

[0099] In combination with the above-mentioned embodiment of updating the speed correction value by the speed increment to obtain the updated speed correction value, at this time, the current preset speed is corrected by the updated speed correction value to obtain the target speed, thereby obtaining a higher target speed.

[0100] A second aspect of the present application provides a vehicle engine control device 20, Fig. 9 It is a structural block diagram of an embodiment of the vehicle engine control device 20 provided in the present application.

[0101] Combination Fig. 9 The vehicle engine control device 20 includes an acquisition module 21 and a control module 22. The acquisition module 21 is used to acquire the current working state of the vehicle's engine, and when the current working state is the warm-up state, acquire the current air intake volume influencing parameter of the vehicle's position and the current water temperature of the engine, and acquire the current maximum power of the engine based on the current air intake volume influencing parameter and the current water temperature; wherein, there is a preset relationship between the combination of the air intake volume influencing parameter and the water temperature and the maximum power. The control module 22 determines the current preset power of the engine according to the preset control strategy, corrects the current preset power by the current maximum power to obtain the target power, and controls the engine to work at the target power; wherein, the target power is less than or equal to the current maximum power.

[0102] A third aspect of the present application provides an electronic device, comprising: a processor; and a memory for storing a computer program, wherein when the computer program is executed by the processor, the vehicle engine control method in any of the above embodiments is implemented.

[0103] Fig.10 It is a schematic diagram of the structural framework of an embodiment of the electronic device 500 provided in the present application.

[0104] In some specific embodiments, the electronic device 500 includes a central processing unit (CPU) 501 and a read-only memory (ROM) 502, wherein the CPU 501 is a processor and the ROM 502 is a memory. The CPU 501 can perform various appropriate actions and processes according to the program stored in the ROM 502 or the program loaded from the storage part 508 to the random access memory (RAM) 503, such as executing the method in the above embodiment. In the RAM 503, various programs and data required for system operation are also stored. The CPU 501, the ROM 502 and the RAM 503 are connected to each other via a bus 504. The input / output (I / O) interface 505 is also connected to the bus 504.

[0105] The following components are connected to the I / O interface 505: an input section 506 including a keyboard, a mouse, etc.; an output section 507 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 508 including a hard disk, etc.; and a communication section 509 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to the I / O interface 505 as needed. A removable medium 511, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 510 as needed so that a computer program read therefrom is installed into the storage section 508 as needed.

[0106] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication section 509, and / or installed from a removable medium 511. When the computer program is executed by a central processing unit (CPU) 501, various functions defined in the system of the present application are executed.

[0107] A third aspect of the present application provides a computer-readable storage medium 40, Fig.11 It is a schematic diagram of the structural framework of an embodiment of the computer-readable storage medium 40 provided in the present application.

[0108] The computer readable storage medium 40 stores a computer program 41 , and when the computer program 41 is executed by a processor, the vehicle engine control method in any of the above embodiments is implemented.

[0109] It should be noted that the computer-readable medium 40 shown in the embodiment of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it. In the present application, a computer-readable signal medium can include a data signal propagated in a baseband or as a part of a carrier wave, wherein a computer-readable computer program is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which may send, propagate, or transmit programs for use by or in conjunction with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0110] In summary, based on the vehicle engine control method, device, electronic device and storage medium provided by the present application, the method includes: obtaining the current working state of the vehicle engine, and when the current working state is the warm-up state, obtaining the current air intake volume influencing parameter of the vehicle position and the current water temperature of the engine, and obtaining the current maximum power of the engine according to the current air intake volume influencing parameter and the current water temperature; wherein, there is a preset relationship between the combination of the air intake volume influencing parameter and the water temperature and the maximum power; determining the current preset power of the engine according to the preset control strategy, correcting the current preset power by the current maximum power to obtain the target power, and controlling the engine to work at the target power; wherein, the target power is less than or equal to the current maximum power. Therefore, the target power is obtained by the current maximum power, so that the PN emission is reduced when the engine works at the target power.

[0111] The above content is only a preferred exemplary embodiment of the present application and is not intended to limit the implementation scheme of the present application. A person skilled in the art can easily make corresponding changes or modifications based on the main concept and spirit of the present application. Therefore, the scope of protection of the present application shall be based on the scope of protection required by the claims.

Claims

1. A method for controlling a vehicle engine, characterized in that: include: Acquire the current working state of the engine of the vehicle, and when the current working state is a warm-up state, acquire the current air intake volume influencing parameter at the position of the vehicle and the current water temperature of the engine, and acquire the current maximum power of the engine according to the current air intake volume influencing parameter and the current water temperature; wherein a combination of the air intake volume influencing parameter and the water temperature has a preset relationship with the maximum power; The current preset power of the engine is determined according to a preset control strategy, the current preset power is corrected by the current maximum power to obtain a target power, and the engine is controlled to operate at the target power; wherein the target power is less than or equal to the current maximum power.

2. The vehicle engine control method according to claim 1, characterized in that: After determining the current preset power of the engine according to the preset control strategy and correcting the current preset power by the current maximum power to obtain the target power, the method further includes: Obtaining a rotation speed correction value according to the target power and the current air intake amount influencing parameter; wherein a preset relationship exists between a combination of the target power and the current air intake amount influencing parameter and the rotation speed correction value; The current preset speed is corrected by the speed correction value to obtain a target speed, and the engine is controlled to operate at the target speed; wherein the current preset speed is determined according to the target power and the preset control strategy.

3. The vehicle engine control method according to claim 1, characterized in that: The step of obtaining the current maximum power of the engine according to the current intake volume influencing parameter and the current water temperature comprises: Determine a preset air intake volume influencing parameter range in which the current air intake volume influencing parameter is located, and determine a preset water temperature range in which the current water temperature is located; wherein the preset air intake volume influencing parameter range and the preset water temperature range are both provided in multiple numbers and do not overlap with each other; The current maximum power of the engine is determined according to the preset air intake volume influencing parameter range and the preset water temperature range; wherein different combinations of the preset air intake volume influencing parameter range and the preset water temperature range correspond to different current maximum powers.

4. The vehicle engine control method according to claim 3, characterized in that: The step of determining the current maximum power of the engine according to the preset air intake volume influencing parameter range and the preset water temperature range comprises: If the preset air intake volume influencing parameter range is the first preset air intake volume influencing parameter range, and the preset water temperature range is the first preset water temperature range, then determining that the current maximum power of the engine is the first current maximum power; If the preset air intake volume influencing parameter range is the first preset air intake volume influencing parameter range, and the preset water temperature range is the second preset water temperature range, then the current maximum power is determined to be the second current maximum power; wherein the water temperature average value of the first preset water temperature range is lower than the water temperature average value of the second preset water temperature range, and the first current maximum power is lower than the second current maximum power; If the preset air intake volume influencing parameter range is the second preset air intake volume influencing parameter range, and the preset water temperature range is the first preset water temperature range, then it is determined that the current maximum power is the third current maximum power; wherein, the average air intake volume corresponding to the first preset air intake volume influencing parameter range is higher than the average air intake volume corresponding to the second preset air intake volume influencing parameter range, and the first current maximum power is higher than the third current maximum power.

5. The vehicle engine control method according to claim 3, characterized in that: The step of determining the current maximum power of the engine according to the preset air intake volume influencing parameter range and the preset water temperature range comprises: Determine the corresponding current maximum power range according to the preset air intake volume influencing parameter range and the preset water temperature range, and determine the current power of the battery pack of the vehicle; wherein different combinations of the preset air intake volume influencing parameter range and the preset water temperature range correspond to different current maximum power ranges; If the current power level is lower than the preset threshold power level, the highest power in the current maximum power range is used as the current maximum power; The step of controlling the engine to operate at the target power comprises: The engine is controlled to operate at the target power so as to generate electricity by driving a generator of the vehicle through the engine.

6. The vehicle engine control method according to claim 2, characterized in that: The step of obtaining a rotation speed correction value according to the target power and the current intake air volume influencing parameter comprises: Determine a preset target power range in which the target power is located, and determine a preset air intake volume influencing parameter range in which the current air intake volume influencing parameter is located; The speed correction value is determined according to the preset target power range and the preset intake volume influencing parameter range; wherein, a preset relationship exists between the combination of the preset target power range and the preset intake volume influencing parameter range and the speed correction value, and when the preset target power range is constant, the lower the average intake volume corresponding to the preset intake volume influencing parameter range, the higher the speed correction value.

7. The vehicle engine control method according to claim 6, characterized in that: After the step of obtaining the rotation speed correction value according to the target power and the current intake air volume influencing parameter, the method includes: Obtaining the current speed of the vehicle; If the current speed of the vehicle is greater than a preset speed, a speed increment is determined according to the current speed, and the sum of the speed correction value and the speed increment is used as the updated speed correction value; wherein there is a preset relationship between the vehicle speed and the speed increment, and the higher the vehicle speed, the higher the corresponding speed increment; The step of correcting the current preset speed by the speed correction value to obtain the target speed includes: The target speed is obtained by correcting the current preset speed using the updated speed correction value.

8. A vehicle engine control device, characterized in that: include: an acquisition module, used to acquire the current working state of the engine of the vehicle, and when the current working state is a warm-up state, acquire the current air intake volume influencing parameter at the position of the vehicle and the current water temperature of the engine, and acquire the current maximum power of the engine according to the current air intake volume influencing parameter and the current water temperature; wherein a combination of the air intake volume influencing parameter and the water temperature has a preset relationship with the maximum power; A control module determines a current preset power of the engine according to a preset control strategy, corrects the current preset power by the current maximum power to obtain a target power, and controls the engine to operate at the target power; wherein the target power is less than or equal to the current maximum power.

9. An electronic device, characterized in that: include: processor; A memory for storing a computer program, wherein when the computer program is executed by the processor, the vehicle engine control method according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by a processor, the vehicle engine control method according to any one of claims 1 to 7 is implemented.

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