Vehicle control method, device, equipment and medium

Abstract

The invention discloses a vehicle control method, device and equipment and a medium, and the method comprises the steps: responding to a power-on instruction of a hybrid vehicle, and obtaining the actual environment temperature of the environment where the hybrid vehicle is located; under the condition that the actual environment temperature is smaller than the preset environment temperature, whether the accumulative running duration of the hybrid vehicle and the accumulative running duration of an engine of the hybrid vehicle meet a first preset condition or not is judged, and / or whether the accumulative stop duration of the engine meets a second preset condition or not is judged; and under the condition that the first preset condition and / or the second preset condition are / is met and the actual vehicle speed of the hybrid vehicle is larger than 0, the engine is controlled to operate. Volatilization of water vapor and gasoline vapor in engine oil is accelerated, the water vapor and the gasoline vapor are introduced into the engine through the crankcase ventilation system to participate in combustion and discharged out of the engine, finally moisture and gasoline in the engine oil are reduced, the performance deterioration condition of the engine oil caused by chemical reaction of the moisture and the gasoline is relieved, and the service life of the engine oil is prolonged.

Description

Technical Field

[0001] This invention relates to the field of vehicle control technology, and more particularly to a vehicle control method, device, equipment, and medium. Background Technology

[0002] Hybrid vehicles include plug-in hybrid electric vehicles (PHEVs) and range-extended vehicles (REVs). Both PHEVs and REVs are new energy vehicles that fall between pure electric vehicles and gasoline-powered vehicles. They possess the engine, transmission, drivetrain, fuel system, and fuel tank of a traditional vehicle, as well as the battery, electric motor, and control circuitry of a pure electric vehicle, and often have larger battery capacities and charging ports. PHEVs and REVs combine the advantages of both pure electric and hybrid vehicles, enabling both pure electric, zero-emission driving and extended driving range through hybrid mode. However, because the engine in a hybrid vehicle may only operate intermittently or be idle for extended periods, the engine oil deteriorates faster than in a pure gasoline-powered vehicle. Therefore, extending the lifespan of engine oil in hybrid vehicles is a pressing issue that needs to be addressed. Summary of the Invention

[0003] This application provides a vehicle control method, device, equipment, and medium, which solves the technical problem in the prior art that the engine oil in hybrid vehicles may only work intermittently or not work for a long time, resulting in faster oil deterioration and shorter oil life than the engine oil in pure gasoline vehicles. This achieves the technical effect of extending the oil life of hybrid vehicles.

[0004] In a first aspect, this application provides a vehicle control method applied to a hybrid vehicle, the method comprising: In response to the power-on command of the hybrid vehicle, the actual ambient temperature of the environment in which the hybrid vehicle is located is obtained; When the actual ambient temperature is lower than the preset ambient temperature, it is determined whether the cumulative driving time of the hybrid vehicle and the cumulative running time of the hybrid vehicle's engine meet the first preset condition, and / or, it is determined whether the cumulative downtime of the engine meets the second preset condition; the first preset condition includes the cumulative driving time being greater than the first preset time and the cumulative running time being less than the second preset time, and the second preset condition includes the cumulative downtime being greater than the third preset time; When the first preset condition and / or the second preset condition are met, and the actual speed of the hybrid vehicle is greater than 0, the engine is controlled to run.

[0005] Furthermore, controlling the operation of the engine includes: Target parameters are collected at a first preset frequency, including the actual exhaust temperature of the engine and the actual ambient temperature of the environment where the hybrid vehicle is located. Based on the first preset correlation and the target parameter collected in the current time period, the target operating power of the engine in the current time period is determined, and the engine is controlled to operate at the target operating power in the current time period; the current time period refers to the time period between the time when the target parameter is collected in the current time period and the time when the target parameter is collected in the next time period; the first preset correlation refers to the correspondence between the exhaust temperature of the engine, the ambient temperature of the environment where the hybrid vehicle is located, and the operating power of the engine.

[0006] Furthermore, after controlling the engine to operate, the method further includes: The actual operating power of the engine is collected according to the second preset frequency, and the actual operating time of the engine under each actual operating power is calculated for different actual operating power. Based on the second preset correlation and the actual operating sub-duration of each actual operating power, the duration contribution sub-proportion of each actual operating power is determined; the second preset correlation includes the lower limit of the operating duration of the engine at each operating power. The total duration contribution ratio is determined based on the duration contribution ratio of each of the actual operating power components. If the total contribution ratio of the duration is greater than or equal to 1, the engine is controlled to stop running.

[0007] Furthermore, the method also includes: If the total contribution ratio of the time is greater than or equal to 1, the cumulative driving time, the cumulative running time, and the cumulative downtime are reset to zero.

[0008] Furthermore, the method also includes: In response to the power-on command of the hybrid vehicle, the cumulative driving time is updated when the hybrid vehicle is in a driving state; the cumulative driving time is updated when the engine is running; and the cumulative downtime is updated when the engine is stopped.

[0009] Furthermore, the method also includes: In response to the power-down command of the hybrid vehicle, the cumulative downtime is updated.

[0010] Furthermore, the method also includes: If the first preset condition and the second preset condition are not met, the system continuously determines whether the cumulative driving time and the cumulative running time meet the first preset condition, and / or determines whether the cumulative downtime meets the second preset condition, until the hybrid vehicle receives a power-off command, or until the first preset condition and / or the second preset condition are met.

[0011] Secondly, this application provides a vehicle control device for use in hybrid vehicles, the device comprising: An ambient temperature acquisition module is used to acquire the actual ambient temperature of the environment where the hybrid vehicle is located in response to the power-on command of the hybrid vehicle. The condition judgment module is used to determine whether the cumulative driving time of the hybrid vehicle and the cumulative running time of the hybrid vehicle's engine meet a first preset condition, and / or whether the cumulative downtime of the engine meets a second preset condition when the actual ambient temperature is lower than a preset ambient temperature; the first preset condition includes the cumulative driving time being greater than a first preset time and the cumulative running time being less than a second preset time, and the second preset condition includes the cumulative downtime being greater than a third preset time; An engine operation module is used to control the engine to operate when the first preset condition and / or the second preset condition are met, and the actual vehicle speed of the hybrid vehicle is greater than 0.

[0012] Thirdly, this application provides an electronic device, comprising: processor; Memory used to store the processor's executable instructions; The processor is configured to execute a vehicle control method as provided in the first aspect.

[0013] Fourthly, this application provides a non-transitory computer-readable storage medium, wherein when the instructions in the storage medium are executed by a processor of an electronic device, the electronic device is able to perform a vehicle control method as provided in the first aspect.

[0014] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: In response to the power-on command of the hybrid vehicle, this embodiment obtains the actual ambient temperature of the environment where the hybrid vehicle is located. If the actual ambient temperature is lower than a preset ambient temperature, it determines whether the cumulative driving time of the hybrid vehicle and the cumulative running time of the hybrid vehicle's engine meet a first preset condition, and / or determines whether the cumulative downtime of the engine meets a second preset condition. If the first preset condition and / or the second preset condition are met, and the actual vehicle speed of the hybrid vehicle is greater than 0, the engine is controlled to run. This embodiment ensures that the fastest oil temperature rise rate is achieved without affecting the user's NVH experience, increasing the positive pressure of the crankcase, accelerating the evaporation of water vapor and gasoline vapor in the oil, and introducing them into the engine through the crankcase ventilation system to participate in combustion and be discharged from the engine. Ultimately, this reduces the water and gasoline in the oil, slows down the deterioration of oil performance caused by the chemical reaction between water and gasoline, and extends the service life of the oil. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic flowchart of a vehicle control method provided in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a vehicle control device provided in an embodiment of this application; Figure 3 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0017] This application provides a vehicle control method that solves the technical problem in the prior art where the engine of a hybrid vehicle may only work intermittently or not work for a long time, resulting in faster oil deterioration and shorter oil life than that of a pure gasoline vehicle.

[0018] The technical solution of this application embodiment is to solve the above-mentioned technical problems, and the general idea is as follows: This application embodiment does not add any hardware to the hybrid vehicle, nor does it modify the existing hardware of the hybrid vehicle. It addresses the performance degradation issues caused by high water content in the engine oil and high fuel ratio in the usage scenarios of new energy hybrid vehicles by optimizing the engine control logic. This application embodiment uses the cumulative running time of the hybrid vehicle, the cumulative running time of the engine, and the real-time ambient temperature to predict engine oil performance degradation. Furthermore, it also uses the cumulative running time of the engine when it is stopped and the real-time ambient temperature to predict engine oil performance degradation. This application embodiment determines the engine operating power based on ambient temperature and exhaust temperature, thereby minimizing the discomfort caused to the user by the vibration caused by the forced engine operation to reduce the water content of the engine oil. This application embodiment determines the forced running time for reducing the water content of the engine oil by using the engine operating power, so as to minimize engine operation while meeting the requirement of reducing the water content of the engine oil, thereby reducing the customer's fuel costs.

[0019] This application embodiment ensures that the fastest oil temperature rise rate is achieved without affecting the user's NVH experience, increases the positive pressure of the crankcase, accelerates the volatilization of water vapor and gasoline vapor in the oil, and introduces them into the engine through the crankcase ventilation system to participate in combustion and be expelled from the engine. Ultimately, this reduces the amount of water and gasoline in the oil, slows down the deterioration of oil performance caused by chemical reactions between water and gasoline, and extends the service life of the oil.

[0020] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0021] First, it should be clarified that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0022] Hybrid vehicles are vehicles equipped with an engine that can operate normally without relying on it for propulsion. Examples include plug-in hybrid electric vehicles (PHEVs) and range-extended vehicles (REVs). PHEVs are powered by both a gasoline engine and an electric motor. They have a large battery capacity and can be externally charged, requiring both gasoline and electricity for energy replenishment. They also support pure electric mode operation, typically using the battery's electrical energy for short distances and the gasoline engine for long distances. REVs are driven by an electric motor, while the gasoline engine is used to charge the battery. In other words, the gasoline engine does not directly drive the wheels; it charges the battery when it is low and stops operating when the battery is fully charged.

[0023] In daily use, hybrid vehicles can be used as pure electric vehicles. As long as the range provided by the battery is not exceeded on a single use (generally more than 100 kilometers is not a problem), zero emissions and zero fuel consumption can be achieved.

[0024] Compared to non-plug-in hybrid electric vehicles (PHEVs), PHEVs have larger battery capacities, enabling them to travel longer distances. If each trip is short and there are good charging options, PHEVs can be used as pure electric vehicles without refueling, thus offering the advantages of pure electric vehicles.

[0025] Compared to pure electric vehicles, plug-in hybrid electric vehicles (PHEVs) have significantly smaller battery capacities. However, they incorporate the engine, transmission, drivetrain, fuel system, and fuel tank of a traditional gasoline-powered vehicle. Therefore, when charging is unavailable, they can continue driving as long as they are refueled with gasoline, and their driving range is not limited by charging conditions. Furthermore, PHEVs also retain the advantages of gasoline-powered vehicles. PHEVs combine the strengths of traditional hybrid vehicles, providing a longer driving range (in hybrid mode) while also meeting the needs of people who wish to drive on pure electricity, thus serving as a good energy alternative.

[0026] For most PHEV / REV vehicle users, pure electric driving scenarios account for the majority of their usage, while fuel driving is only used occasionally for long-range scenarios. In most cases, PHEVs are used more like pure electric vehicles.

[0027] Compared to pure gasoline vehicle engines, hybrid vehicle engines operate intermittently or even inactively for extended periods, resulting in lower crankcase temperatures. Over time, this leads to water vapor condensation and accumulation within the crankcase. Simultaneously, the lower temperatures cause fuel dilution in the crankcase, and the water and fuel in the engine oil can emulsify and deteriorate. Engine oil water content is a critical indicator, directly affecting its performance and lifespan. When the water content exceeds safe limits, additives (such as antioxidants and detergents / dispersants) dissipate, accelerating oil oxidation and producing organic acids. These organic acids react with acidic oxides in engine exhaust to form inorganic acids, severely impacting oil quality and performance. This prevents the oil from effectively lubricating the engine, leading to corrosion and even rust of internal engine components. In severe cases, it can even cause serious mechanical failures such as cylinder scoring and bearing damage.

[0028] New energy hybrid vehicles primarily rely on the electric motor when driving at low speeds or short distances. The engine starts quickly and operates at low temperatures, preventing water vapor in the crankcase from fully evaporating. This water vapor mixes with the engine oil, forming an emulsion. Unburned gasoline at low temperatures may also seep into the crankcase, further exacerbating dilution and emulsification of the engine oil. Therefore, the engine oil in hybrid vehicles deteriorates faster than in pure gasoline vehicles, potentially leading to a shorter oil lifespan, more frequent oil change intervals, and higher oil change costs. Extending the lifespan of engine oil in hybrid vehicles and reducing oil change costs are therefore urgent issues that need to be addressed.

[0029] To address the aforementioned problems, this application provides a vehicle control method applied to hybrid vehicles. The method includes steps S11-S13, as detailed below. Figure 1 As shown.

[0030] Step S11: In response to the power-on command of the hybrid vehicle, obtain the actual ambient temperature of the environment where the hybrid vehicle is located. Step S12: When the actual ambient temperature is lower than the preset ambient temperature, determine whether the cumulative driving time of the hybrid vehicle and the cumulative running time of the hybrid vehicle's engine meet the first preset condition, and / or determine whether the cumulative shutdown time of the engine meets the second preset condition; the first preset condition includes that the cumulative driving time is greater than the first preset time and the cumulative running time is less than the second preset time, and the second preset condition includes that the cumulative shutdown time is greater than the third preset time; Step S13: When the first preset condition and / or the second preset condition are met, and the actual speed of the hybrid vehicle is greater than 0, control the engine to run.

[0031] The vehicle control method provided in this application embodiment can be executed by the vehicle control unit (VCU), the central control unit (CCU), or the engine control unit (ECU). The specific method can be selected according to the actual situation. This application embodiment only uses the vehicle control unit as the execution subject as an example for illustration.

[0032] Now continue to combine Figure 1 The vehicle control method provided in the embodiments of this application is described as follows.

[0033] Regarding step S11, in response to the power-on command of the hybrid vehicle, the actual ambient temperature of the environment where the hybrid vehicle is located is obtained.

[0034] When a user needs to use the vehicle, they can actively trigger the hybrid vehicle to start, thereby generating a power-on command. The user can trigger the hybrid vehicle to start remotely via a mobile device, by voice command, or by touching the start button, depending on the specific situation.

[0035] In response to the power-on command of the hybrid vehicle, the vehicle controller collects the actual ambient temperature of the environment in which the hybrid vehicle is currently located from the ambient temperature sensor deployed on the hybrid vehicle itself.

[0036] The actual ambient temperature is compared with the preset ambient temperature to determine whether the hybrid vehicle is currently in a low-temperature environment. The preset ambient temperature can be 14°C or lower, such as 10°C. If the actual ambient temperature is greater than or equal to the preset ambient temperature, the hybrid vehicle is considered not in a low-temperature environment, meaning the likelihood of fuel dilution in the engine oil is low, the likelihood of water vapor condensation and accumulation in the crankcase is low, and the likelihood of accelerated oil deterioration is low; therefore, further steps are not required. If the actual ambient temperature is lower than the preset ambient temperature, the hybrid vehicle is considered to be in a low-temperature environment, meaning the likelihood of fuel dilution in the engine oil is high, the likelihood of water vapor condensation and accumulation in the crankcase is high, and the likelihood of accelerated oil deterioration is high; therefore, further steps are required.

[0037] Regarding step S12, when the actual ambient temperature is lower than the preset ambient temperature, it is determined whether the cumulative driving time of the hybrid vehicle and the cumulative running time of the hybrid vehicle's engine meet the first preset condition, and / or, it is determined whether the cumulative downtime of the engine meets the second preset condition; the first preset condition includes the cumulative driving time being greater than the first preset time and the cumulative running time being less than the second preset time, and the second preset condition includes the cumulative downtime being greater than the third preset time.

[0038] First, let's explain the cumulative driving time, cumulative running time, and cumulative downtime.

[0039] The cumulative driving time is for the entire hybrid vehicle. As long as the hybrid vehicle is powered on and running, it is considered to be in a driving state. The cumulative driving time is the sum of the time the hybrid vehicle is powered on and running.

[0040] The cumulative runtime refers to the engine of a hybrid vehicle; it is the total time the engine is running.

[0041] The cumulative downtime refers to the engine of a hybrid vehicle, while the cumulative running time is the sum of the time the engine is in a stopped state.

[0042] Secondly, when the actual ambient temperature is lower than the preset ambient temperature, it can be determined in three ways whether to intervene in the rate of oil deterioration, or in other words, it can be determined in three ways whether to perform an operation to reduce the water content in the oil.

[0043] Method 1: Determine whether the cumulative driving time of the hybrid vehicle and the cumulative running time of the hybrid vehicle's engine meet the first preset condition. The first preset condition includes that the cumulative driving time is greater than the first preset time (1800) and the cumulative running time is less than the second preset time (100).

[0044] Method 2: Determine whether the cumulative downtime of the engine meets the second preset condition. The second preset condition includes that the cumulative downtime is greater than the third preset time (1800).

[0045] Method 3: A combination of Method 1 and Method 2.

[0046] Regarding Method 1, the first preset duration can be 1500-2000 hours, for example, 1800 hours. The second preset duration can be 80-120 hours, for example, 100 hours. When the cumulative driving time exceeds the first preset duration and the cumulative running time is less than the second preset duration, it is considered that the water content of the engine oil is relatively high, and intervention is needed to reduce the rate of engine oil deterioration. This requires performing an operation to reduce the water content in the engine oil, which is step S13.

[0047] A cumulative driving time exceeding the first preset time indicates that the hybrid vehicle has been running for a relatively long period. A cumulative driving time less than the second preset time indicates that the engine has been running for a relatively short period. The long overall driving time of the hybrid vehicle coupled with the short engine running time suggests that the engine was used less during the extended driving period, resulting in a higher water content in the engine oil, necessitating a reduction in the water content.

[0048] Regarding method two, the third preset duration can be 1500-2000 hours, for example, 1800 hours. If the cumulative downtime exceeds the third preset duration, it means that the engine has not been used for a long time, so the water content in the engine oil is already high, and it is necessary to reduce the water content in the engine oil.

[0049] As for method three, it combines method one and method two. Only when the first preset condition and the second preset condition are met at the same time does it mean that the water content of the engine oil is already high and needs to be reduced.

[0050] In actual operation, you can choose any of the three methods mentioned above to determine whether the water content in the engine oil is high, that is, to determine whether it is necessary to reduce the water content in the engine oil.

[0051] Regarding step S13, if the first preset condition and / or the second preset condition are met, and the actual speed of the hybrid vehicle is greater than 0, the engine is controlled to run.

[0052] If the first preset condition and the second preset condition are not met, the system continuously determines whether the cumulative driving time and the cumulative running time meet the first preset condition, and / or determines whether the cumulative downtime meets the second preset condition, until the hybrid vehicle receives a power-off command, or until the first preset condition and / or the second preset condition are met.

[0053] It is also explained that, when using Method 1, if the first preset condition is not met, the cumulative driving time, cumulative running time, and cumulative parking time will continue to be updated; if the first preset condition is met, the system will continue to determine whether the actual speed of the hybrid vehicle is greater than 0. When using Method 2, if the second preset condition is not met, the cumulative driving time, cumulative running time, and cumulative parking time will continue to be updated; if the second preset condition is met, the system will continue to determine whether the actual speed of the hybrid vehicle is greater than 0. When using Method 3, if at least one of the first and second preset conditions is not met, the cumulative driving time, cumulative running time, and cumulative parking time will continue to be updated; if both the first and second preset conditions are met, the system will continue to determine whether the actual speed of the hybrid vehicle is greater than 0.

[0054] If the actual speed of a hybrid vehicle is greater than 0, it means the vehicle is in motion. This allows the engine to be forced to run, ensuring the fastest possible oil temperature rise without affecting the user's NVH (Noise, Vibration, and Harshness) experience. This increases crankcase positive pressure, accelerates the evaporation of water vapor and gasoline vapor in the oil, and allows them to be introduced into the engine through the crankcase ventilation system for combustion and exhaust. Ultimately, this reduces the amount of water and gasoline in the oil, slowing down oil performance degradation caused by chemical reactions with water and gasoline, and extending oil life. NVH includes noise, vibration, and harshness.

[0055] Furthermore, controlling the operation of the engine includes: Target parameters are collected at a first preset frequency, including the actual exhaust temperature of the engine and the actual ambient temperature of the environment where the hybrid vehicle is located. Based on the first preset correlation and the target parameter collected in the current time period, the target operating power of the engine in the current time period is determined, and the engine is controlled to operate at the target operating power in the current time period; the current time period refers to the time period between the time when the target parameter is collected in the current time period and the time when the target parameter is collected in the next time period; the first preset correlation refers to the correspondence between the exhaust temperature of the engine, the ambient temperature of the environment where the hybrid vehicle is located, and the operating power of the engine.

[0056] The first preset frequency can be selected according to the actual situation. For example, it can be 10-100Hz, which means sampling once every 0.01-0.1 seconds for real-time control. Alternatively, it can be 1-10Hz, which means sampling once every 0.1-1 seconds for long-term trend monitoring (such as catalytic converter aging diagnosis).

[0057] The target parameters include the engine's actual exhaust temperature and the actual ambient temperature of the environment where the hybrid vehicle is located. The first preset correlation refers to the correspondence between the target parameters and the engine's operating power. The first preset correlation can be in tabular or functional form, depending on the actual situation. For example, the first preset correlation can be shown in Table 1, where the first row represents the catalyst exhaust temperature (in °C), and the first column represents the ambient temperature (in °C). The other data in Table 1 represent the engine's operating power; for a PHEV, this operating power is the power generated by the engine, in kW. The 5 in the second row and second column of Table 1 indicates that, with an actual exhaust temperature of 10 °C and an ambient temperature of -30 °C, the engine's target operating power is 5 kW.

[0058] Table 1

[0059] It's important to note that the catalytic converter exhaust temperature table only displays a single value. However, the actual catalytic converter exhaust temperature varies continuously. Therefore, the catalytic converter exhaust temperature in the table represents only the midpoint of the corresponding temperature range. For example, 10℃ represents the range of 5℃ (inclusive) to 15℃ (exclusive), 20℃ represents the range of 15℃ (inclusive) to 25℃ (exclusive), and so on. Similarly, ambient temperature also varies continuously, so the ambient temperature in the table represents only the midpoint of the corresponding temperature range. For example, -30℃ represents the range of -35℃ (inclusive) to 25℃ (exclusive), -20℃ represents the range of -25℃ (inclusive) to 15℃ (exclusive), and so on. Therefore, when the catalytic converter exhaust temperature is between 5℃ (inclusive) and 15℃ (exclusive), and the ambient temperature is between -35℃ (inclusive) and 25℃ (exclusive), the engine's operating power can be 5kW.

[0060] For each target parameter collected, the following processing is performed: Based on the target parameter of the current collection, a first preset correlation is queried to determine the target operating power corresponding to the target parameter. From the moment the target data is collected until the moment the next target data is collected, the engine is controlled to operate at the target operating power. This ensures that, without affecting the customer's NVH experience, the fastest possible oil temperature rise is achieved, increasing crankcase positive pressure, accelerating the evaporation of water vapor and gasoline vapor in the oil, and allowing them to be introduced into the engine through the crankcase ventilation system to participate in combustion and be expelled from the engine. Ultimately, this reduces the amount of water and gasoline in the oil, slows down the deterioration of oil performance caused by chemical reactions between water and gasoline, and extends the oil's service life.

[0061] After controlling the engine to operate, the method further includes: The actual operating power of the engine is collected according to the second preset frequency, and the actual operating time of the engine under each actual operating power is calculated for different actual operating power. Based on the second preset correlation and the actual operating sub-duration of each actual operating power, the duration contribution sub-proportion of each actual operating power is determined; the second preset correlation includes the lower limit of the operating duration of the engine at each operating power. The total duration contribution ratio is determined based on the duration contribution ratio of each of the actual operating power components. If the total contribution ratio of the duration is greater than or equal to 1, the engine is controlled to stop running.

[0062] The second preset frequency can be adjusted according to actual operating conditions. For example, high-frequency sampling (10-100Hz) is used during real-time control, meaning sampling is performed every 10-100 milliseconds. Real-time control involves dynamic adjustments to fuel injection quantity, ignition timing, and turbo pressure under transient conditions (such as rapid acceleration and downshifting). Low-frequency sampling (1-10Hz) is used under steady-state monitoring, meaning sampling is performed every 0.1-1 second, for long-term power trend recording, diagnostics, or instrument displays (such as power / torque meters). In some special operating conditions, such as cold starts or catalytic converter heating, the sampling frequency may be temporarily increased to above 50Hz.

[0063] Each time actual operating power is collected, the actual operating time of that actual operating power is calculated. For each different actual operating power, the actual operating sub-duration of the engine at each actual operating power is calculated. For example, P1 power appeared 13 times and lasted for 5 minutes, while P2 power appeared 20 times and lasted for 20 minutes.

[0064] The second preset correlation includes the minimum operating time corresponding to each operating power of the engine, which can be in tabular or functional form. Table 2 shows one such second preset correlation provided in an embodiment of this application. The unit of operating power is kW, and the unit of operating time is minutes. When the engine power is 1kW, the engine needs to run for at least 44 minutes; when the engine power is 5kW, the engine needs to run for at least 42 minutes.

[0065] Table 2

[0066] It's important to note that Table 2 only displays a single operating power value. However, in reality, operating power changes continuously. Therefore, the operating power in the table represents only the midpoint of the corresponding power range. For example, 1kW represents the range of 0 (inclusive) to 2.5kW (exclusive), 5kW represents the range of 2.5kW (inclusive) to 7.5kW (exclusive), and so on. Therefore, when the engine power is in the range of 0 (inclusive) to 2.5kW (exclusive), the engine needs to run for at least 44 minutes; when the engine power is in the range of 2.5kW (inclusive) to 7.5kW (exclusive), the engine needs to run for at least 42 minutes.

[0067] However, since the actual operating power of a hybrid vehicle changes continuously during operation, it will not continuously operate at the same power level until the lower limit of the duration. Therefore, this embodiment determines the duration contribution ratio of each actual operating power based on the second preset correlation and the actual operating sub-duration of each actual operating power. Specifically, for example, as shown in Table 3, if the actual operating sub-duration when the operating power is in the 1kW range is 5 minutes, and the lower limit of the duration is 44 minutes, then the quotient of 5 divided by 44 is used as the duration contribution ratio for that power range, and so on.

[0068] Table 3

[0069] Adding up all the duration contribution proportions gives the total duration contribution proportion. Comparing this total proportion to 1, if it's greater than or equal to 1, the engine's runtime is considered sufficient, and the engine can be stopped. This ensures the fastest possible oil temperature rise without affecting the user's NVH experience, increases crankcase positive pressure, accelerates the evaporation of water vapor and gasoline vapor in the oil, and allows them to be introduced into the engine through the crankcase ventilation system for combustion and exhaust. Ultimately, this reduces water and gasoline levels in the oil, slows down oil performance degradation caused by chemical reactions between water and gasoline, and extends oil lifespan.

[0070] It should be noted that the engine shutdown described in this application embodiment refers to controlling the engine to exit the control logic of the vehicle control method described in this application embodiment. When the hybrid vehicle is in other situations where the engine needs to continue running, other control logic is used to control the engine to continue running. For example, after exiting the control logic of the vehicle control method described in this application embodiment, if the battery charge is lower than a certain threshold, the engine needs to continue running to charge the battery.

[0071] If the total contribution of the duration is greater than or equal to 1, it means that the operation of reducing the water content of the engine oil has been completed. Then, the cumulative driving time, the cumulative running time, and the cumulative downtime can be reset to zero and these data can be accumulated again.

[0072] Specifically, in response to the power-on command of the hybrid vehicle, the cumulative driving time is updated when the hybrid vehicle is in a driving state; the cumulative driving time is updated when the engine is running; and the cumulative downtime is updated when the engine is off. In response to the power-off command of the hybrid vehicle, the cumulative downtime is updated.

[0073] In summary, in response to the power-on command of the hybrid vehicle, this embodiment of the application obtains the actual ambient temperature of the environment where the hybrid vehicle is located; if the actual ambient temperature is lower than a preset ambient temperature, it determines whether the cumulative driving time of the hybrid vehicle and the cumulative running time of the hybrid vehicle's engine meet a first preset condition, and / or determines whether the cumulative downtime of the engine meets a second preset condition; if the first preset condition and / or the second preset condition are met, and the actual speed of the hybrid vehicle is greater than 0, the engine is controlled to run.

[0074] As can be seen, this application embodiment does not add any hardware to the hybrid vehicle, nor does it make any changes to the existing hardware of the hybrid vehicle. It solves the performance degradation problem caused by high water content in the engine oil and high fuel ratio in the usage scenarios of new energy hybrid vehicles by optimizing the engine control logic. This application embodiment uses the cumulative running time of the hybrid vehicle, the cumulative running time of the engine, and the real-time ambient temperature to predict engine oil performance degradation; in addition, it also uses the cumulative running time of the engine being stopped and the real-time ambient temperature to predict engine oil performance degradation. This application embodiment determines the engine operating power based on ambient temperature and exhaust temperature, thereby minimizing the discomfort caused to the user by the vibration caused by the forced operation of the engine to reduce the water content of the engine oil. This application embodiment determines the forced running time for reducing the water content of the engine oil by using the engine operating power, so as to minimize engine operation while meeting the requirement of reducing the water content of the engine oil, thereby reducing the customer's fuel costs.

[0075] This application embodiment ensures that the fastest oil temperature rise rate is achieved without affecting the user's NVH experience, increases the positive pressure of the crankcase, accelerates the volatilization of water vapor and gasoline vapor in the oil, and introduces them into the engine through the crankcase ventilation system to participate in combustion and be expelled from the engine. Ultimately, this reduces the amount of water and gasoline in the oil, slows down the deterioration of oil performance caused by chemical reactions between water and gasoline, and extends the service life of the oil.

[0076] Based on the same inventive concept, the embodiments of this application provide, as follows: Figure 2 The vehicle control device shown is applied to a hybrid vehicle, and the device includes: The ambient temperature acquisition module 21 is used to acquire the actual ambient temperature of the environment where the hybrid vehicle is located in response to the power-on command of the hybrid vehicle. The condition judgment module 22 is used to determine whether the cumulative driving time of the hybrid vehicle and the cumulative running time of the hybrid vehicle's engine meet a first preset condition, and / or to determine whether the cumulative downtime of the engine meets a second preset condition when the actual ambient temperature is lower than a preset ambient temperature; the first preset condition includes the cumulative driving time being greater than a first preset time and the cumulative running time being less than a second preset time, and the second preset condition includes the cumulative downtime being greater than a third preset time; The engine operation module 23 is used to control the engine operation when the first preset condition and / or the second preset condition are met, and the actual vehicle speed of the hybrid vehicle is greater than 0.

[0077] Furthermore, the engine operation module 23 is used for: Target parameters are collected at a first preset frequency, including the actual exhaust temperature of the engine and the actual ambient temperature of the environment where the hybrid vehicle is located. Based on the first preset correlation and the target parameter collected in the current time period, the target operating power of the engine in the current time period is determined, and the engine is controlled to operate at the target operating power in the current time period; the current time period refers to the time period between the time when the target parameter is collected in the current time period and the time when the target parameter is collected in the next time period; the first preset correlation refers to the correspondence between the exhaust temperature of the engine, the ambient temperature of the environment where the hybrid vehicle is located, and the operating power of the engine.

[0078] Furthermore, the device also includes an engine shutdown module for: After controlling the engine to run, the actual operating power of the engine is collected at a second preset frequency, and the actual operating time of the engine at each actual operating power is calculated for different actual operating power levels. Based on the second preset correlation and the actual operating sub-duration of each actual operating power, the duration contribution sub-proportion of each actual operating power is determined; the second preset correlation includes the lower limit of the operating duration of the engine at each operating power. The total duration contribution ratio is determined based on the duration contribution ratio of each of the actual operating power components. If the total contribution ratio of the duration is greater than or equal to 1, the engine is controlled to stop running.

[0079] Furthermore, the device also includes a reset module for: If the total contribution ratio of the time is greater than or equal to 1, the cumulative driving time, the cumulative running time, and the cumulative downtime are reset to zero.

[0080] Furthermore, the device also includes a duration accumulation module for: In response to the power-on command of the hybrid vehicle, the cumulative driving time is updated when the hybrid vehicle is in a driving state; the cumulative driving time is updated when the engine is running; and the cumulative downtime is updated when the engine is stopped.

[0081] Furthermore, the device also includes a duration accumulation module for: In response to the power-down command of the hybrid vehicle, the cumulative downtime is updated.

[0082] Furthermore, the loop judgment module is used for: If the first preset condition and the second preset condition are not met, the system continuously determines whether the cumulative driving time and the cumulative running time meet the first preset condition, and / or determines whether the cumulative downtime meets the second preset condition, until the hybrid vehicle receives a power-off command, or until the first preset condition and / or the second preset condition are met.

[0083] Based on the same inventive concept, the embodiments of this application provide, as follows: Figure 3 An electronic device shown includes: Processor 31; Memory 32 is used to store executable instructions of the processor 31; The processor 31 is configured to execute a vehicle control method as described above.

[0084] Based on the same inventive concept, embodiments of this application provide a non-transitory computer-readable storage medium, which, when the instructions in the storage medium are executed by the processor 31 of an electronic device, enables the electronic device to perform a vehicle control method as described above.

[0085] Since the electronic device described in this embodiment is an electronic device used to implement the information processing method in the embodiments of this application, those skilled in the art can understand the specific implementation methods and various variations of the electronic device in this embodiment based on the information processing method described in the embodiments of this application. Therefore, how the electronic device implements the method in the embodiments of this application will not be described in detail here. Any electronic device used by those skilled in the art to implement the information processing method in the embodiments of this application falls within the scope of protection of this application.

[0086] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0087] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0088] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0089] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1The steps of the function specified in one or more boxes.

[0090] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0091] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A vehicle control method, characterized in that, Applied to hybrid vehicles, the method includes: In response to the power-on command of the hybrid vehicle, the actual ambient temperature of the environment in which the hybrid vehicle is located is obtained; When the actual ambient temperature is lower than the preset ambient temperature, it is determined whether the cumulative driving time of the hybrid vehicle and the cumulative running time of the hybrid vehicle's engine meet the first preset condition, and / or, it is determined whether the cumulative downtime of the engine meets the second preset condition; the first preset condition includes the cumulative driving time being greater than the first preset time and the cumulative running time being less than the second preset time, and the second preset condition includes the cumulative downtime being greater than the third preset time; When the first preset condition and / or the second preset condition are met, and the actual speed of the hybrid vehicle is greater than 0, the engine is controlled to run.

2. The vehicle control method as described in claim 1, characterized in that, The control of the engine operation includes: Target parameters are collected at a first preset frequency, including the actual exhaust temperature of the engine and the actual ambient temperature of the environment where the hybrid vehicle is located. Based on the first preset correlation and the target parameter collected in the current time period, the target operating power of the engine in the current time period is determined, and the engine is controlled to operate at the target operating power in the current time period; the current time period refers to the time period between the time when the target parameter is collected in the current time period and the time when the target parameter is collected in the next time period; the first preset correlation refers to the correspondence between the exhaust temperature of the engine, the ambient temperature of the environment where the hybrid vehicle is located, and the operating power of the engine.

3. The vehicle control method as described in claim 1, characterized in that, After controlling the engine to operate, the method further includes: The actual operating power of the engine is collected according to the second preset frequency, and the actual operating time of the engine under each actual operating power is calculated for different actual operating power. Based on the second preset correlation and the actual operating sub-duration of each actual operating power, the duration contribution sub-proportion of each actual operating power is determined; the second preset correlation includes the lower limit of the operating duration of the engine at each operating power. The total duration contribution ratio is determined based on the duration contribution ratio of each of the actual operating power components. If the total contribution ratio of the duration is greater than or equal to 1, the engine is controlled to stop running.

4. The vehicle control method as described in claim 3, characterized in that, The method further includes: If the total contribution ratio of the time is greater than or equal to 1, the cumulative driving time, the cumulative running time, and the cumulative downtime are reset to zero.

5. The vehicle control method as described in claim 1, characterized in that, The method further includes: In response to the power-on command of the hybrid vehicle, the cumulative driving time is updated when the hybrid vehicle is in a driving state; the cumulative driving time is updated when the engine is running; and the cumulative downtime is updated when the engine is stopped.

6. The vehicle control method as described in claim 1, characterized in that, The method further includes: In response to the power-down command of the hybrid vehicle, the cumulative downtime is updated.

7. The vehicle control method as described in claim 1, characterized in that, The method further includes: If the first preset condition and the second preset condition are not met, the system continuously determines whether the cumulative driving time and the cumulative running time meet the first preset condition, and / or determines whether the cumulative downtime meets the second preset condition, until the hybrid vehicle receives a power-off command, or until the first preset condition and / or the second preset condition are met.

8. A vehicle control device, characterized in that, The device, applied to hybrid vehicles, includes: An ambient temperature acquisition module is used to acquire the actual ambient temperature of the environment where the hybrid vehicle is located in response to the power-on command of the hybrid vehicle. The condition judgment module is used to determine whether the cumulative driving time of the hybrid vehicle and the cumulative running time of the hybrid vehicle's engine meet a first preset condition, and / or whether the cumulative downtime of the engine meets a second preset condition when the actual ambient temperature is lower than a preset ambient temperature; the first preset condition includes the cumulative driving time being greater than a first preset time and the cumulative running time being less than a second preset time, and the second preset condition includes the cumulative downtime being greater than a third preset time; An engine operation module is used to control the engine to operate when the first preset condition and / or the second preset condition are met, and the actual vehicle speed of the hybrid vehicle is greater than 0.

9. An electronic device, characterized in that, include: processor; Memory used to store the processor's executable instructions; The processor is configured to execute a vehicle control method as described in any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium, wherein instructions in the storage medium, when executed by a processor of an electronic device, enable the electronic device to perform a vehicle control method as described in any one of claims 1 to 7.

Images