Method, device and equipment for inhibiting engine oil emulsification of hybrid vehicle and storage medium

Abstract

The application discloses a kind of hybrid vehicle machine oil emulsification inhibition method, device, equipment and storage medium.Therein, the method includes: obtaining the vehicle operating parameter and vehicle operating mode of hybrid vehicle;According to the vehicle operating parameter, determine the machine oil emulsification risk factor of the hybrid vehicle, and determine the risk level corresponding to the machine oil emulsification risk factor;Based on the vehicle operating mode and the risk level of the vehicle, determine the machine oil emulsification inhibition coping strategy, wherein the emulsification inhibition coping strategy includes but is not limited to the coping strategy for controlling engine accessories, engine speed, engine load and vehicle heater, and the engine accessories include but are not limited to electric water pump and piston cooling nozzle.The technical scheme of the embodiment of the present application solves the problem of machine oil emulsification, shortens the service life of machine oil, and affects the operation of engine, achieves the beneficial effect of effectively inhibiting the machine oil emulsification of hybrid vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engines, and in particular to a method and device for inhibiting engine oil emulsification in a hybrid vehicle, an engine oil emulsification inhibition apparatus, an engine oil emulsification inhibition device, and a storage medium. BACKGROUND

[0002] During the compression stroke and the expansion stroke, the pressure of the mixture in the cylinder is very high, and part of the mixture will enter the crankcase through the gap between the piston, the piston ring, the piston ring opening, and the cylinder sleeve, and mix with the engine oil in the crankcase to form "oil mist".

[0003] When the vehicle is running at a small load and for a short distance, the temperature of the engine rises slowly, the temperature of the engine oil in the crankcase rises more slowly, the amount of water absorbed increases, the water vapor is not easy to evaporate and accumulates, and eventually condenses into water mixed in the oil sump or the lubricating oil pool in the crankcase, which gradually forms a milky liquid under the rotation and stirring of the moving parts in the crankcase, causing engine oil emulsification, shortening the service life of the engine oil, and affecting the operation of the engine. SUMMARY

[0004] The present application provides a method and device for inhibiting engine oil emulsification in a hybrid vehicle, an engine oil emulsification inhibition apparatus, an engine oil emulsification inhibition device, and a storage medium to solve the problem of engine oil emulsification, shortening the service life of the engine oil, and affecting the operation of the engine.

[0005] According to an aspect of the present application, a method for inhibiting engine oil emulsification in a hybrid vehicle is provided, the method comprising:

[0006] obtaining vehicle operating parameters and a vehicle operating mode of the hybrid vehicle;

[0007] determining an engine oil emulsification risk factor of the hybrid vehicle according to the vehicle operating parameters, and determining a risk level corresponding to the engine oil emulsification risk factor;

[0008] determining an engine oil emulsification inhibition strategy based on the vehicle operating mode and the risk level of the vehicle, wherein the emulsion inhibition strategy includes but is not limited to a strategy for controlling engine accessories, engine speed, engine load, and vehicle heating, and the engine accessories include but are not limited to an electric water pump and a piston cooling nozzle.

[0009] According to another aspect of the present application, a device for inhibiting engine oil emulsification in a hybrid vehicle is provided, the device comprising:

[0010] an operating parameter and operating mode acquisition module for obtaining vehicle operating parameters and a vehicle operating mode of the hybrid vehicle;

[0011] a risk level determination module configured to determine a risk factor of oil emulsification of the hybrid vehicle according to the vehicle operation parameters, and determine a risk level corresponding to the risk factor of oil emulsification;

[0012] an oil emulsification inhibition coping strategy determination module configured to determine an oil emulsification inhibition coping strategy based on the vehicle operation mode and the risk level of the vehicle, wherein the oil emulsification inhibition coping strategy includes but is not limited to coping strategies of controlling engine accessories, engine speed, engine load and vehicle heater, and the engine accessories include but are not limited to electric water pump and piston cooling nozzle.

[0013] According to another aspect of the present application, an electronic device is provided, which comprises:

[0014] at least one processor; and

[0015] a memory connected to the at least one processor in communication; wherein,

[0016] the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the method for inhibiting oil emulsification of a hybrid vehicle according to any one of the embodiments of the present application.

[0017] According to another aspect of the present application, a computer readable storage medium is provided, which stores computer instructions for enabling a processor to execute the method for inhibiting oil emulsification of a hybrid vehicle according to any one of the embodiments of the present application.

[0018] The technical solution of the embodiments of the present application comprehensively obtains vehicle related information for determining the risk of oil emulsification by obtaining vehicle operation parameters and vehicle operation mode of a hybrid vehicle. Then, the risk factor of oil emulsification of the hybrid vehicle is determined according to the vehicle operation parameters, and the risk level corresponding to the risk factor of oil emulsification is determined, so as to accurately determine the risk level of current oil emulsification of the hybrid vehicle. Finally, the oil emulsification inhibition coping strategy is determined based on the vehicle operation mode and the risk level of the vehicle, wherein the oil emulsification inhibition coping strategy includes but is not limited to coping strategies of controlling engine accessories, engine speed, engine load and vehicle heater, and the engine accessories include but are not limited to electric water pump and piston cooling nozzle. According to the operation mode and the risk level corresponding to the hybrid vehicle, the best oil emulsification inhibition coping strategy is selected, which solves the problems of oil emulsification, shortened oil life and affected engine operation, and effectively inhibits the oil emulsification of the hybrid vehicle.

[0019] It is to be understood that the details set forth herein do not limit the scope of the embodiments of the application to the specific embodiments described. Rather, the scope of the embodiments of the application is to be defined by the appended claims. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to make the technical solutions in the embodiments of the present application clearer, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0021] Figure 1 is a flow chart of a vehicle engine oil emulsification inhibition method according to the first embodiment of the present application;

[0022] Figure 2a is a flow chart of a vehicle engine oil emulsification inhibition method according to the second embodiment of the present application;

[0023] Figure 2b is a flow chart of a hybrid vehicle engine oil emulsification inhibition method according to the optional example of the second embodiment of the present application;

[0024] Figure 3 is a structural schematic diagram of a vehicle engine oil emulsification inhibition device according to the third embodiment of the present application;

[0025] Figure 4 is a structural schematic diagram of an electronic device for implementing the vehicle engine oil emulsification inhibition method according to the embodiments of the present application. DETAILED DESCRIPTION

[0026] In order to make the technical solutions in the embodiments of the present application clearer, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0027] It should be noted that the terms "first", "second", and the like in the description and in the claims of the present application and above-described accompanying drawings are intended to distinguish similar objects and not necessarily describe a particular sequential or chronological order. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0028] Embodiment one

[0029] Figure 1 A flowchart of a method for inhibiting engine oil emulsification of a hybrid vehicle is provided for the first embodiment of the present application. The present embodiment can be applied to the case of engine oil emulsification of a hybrid vehicle. The method can be executed by an engine oil emulsification inhibition device for a hybrid vehicle, which can be realized in the form of hardware and / or software. The engine oil emulsification inhibition device for a hybrid vehicle can be configured in a hybrid vehicle. As shown in the figure, the method comprises: Figure 1

[0030] S110, obtaining vehicle operating parameters and vehicle operating modes of the hybrid vehicle.

[0031] The vehicle operating parameters can be understood as parameter data generated during the start of the vehicle and during the operation of the vehicle. The vehicle operating mode can be understood as the working mode of the vehicle. The working mode of the vehicle can be determined according to the engine working state, the generator working state, the driving motor state and the clutch state of the hybrid vehicle and other parameters.

[0032] Specifically, the vehicle operating parameters can be obtained by sensors installed in the vehicle itself and the control unit of the vehicle. For example, the vehicle operating parameters of the hybrid vehicle can be obtained by sensors installed in the main oil passage of the engine of the hybrid vehicle to obtain the oil temperature when the hybrid vehicle starts and / or when the hybrid vehicle is turned off; the driving mileage and average speed of the hybrid vehicle can be calculated by the engine control unit of the hybrid vehicle.

[0033] ​Specifically, the vehicle operation mode can be determined according to parameters such as the engine working state, the generator working state, the driving motor state and the clutch state of the hybrid vehicle. For example, if the engine state of the vehicle is a stop state, the generator working state is a stop state, the driving electric state is a driving / recovery state, and the clutch state is a separation state, the vehicle operation mode is determined to be an electric mode; if the engine state of the vehicle is a running state, the generator working state is a power generation state, the driving electric state is a driving / recovery state, and the clutch state is a separation state, the vehicle operation mode is determined to be a series mode; if the engine state of the vehicle is a running state, the generator working state is a follow state, the driving electric state is a driving / recovery state, and the clutch state is a combination state, the vehicle operation mode is determined to be a parallel mode. In the electric mode, the battery provides power, and the driving motor drives or recovers power generation; in the series mode, the engine runs, the driving motor drives or recovers, and the power battery can be in a discharging state or a charging state according to different vehicle working conditions; in the parallel mode, the engine directly drives, the driving motor assists or recovers power generation, and the power battery can be in a discharging state or a charging state.

[0034] Optionally, before obtaining the vehicle operation parameters and the vehicle operation mode of the hybrid vehicle, it is determined whether to activate the oil emulsification judgment condition based on the ambient temperature of the vehicle operation. If the temperature of the vehicle is in the temperature range of activating the oil emulsification judgment, the oil emulsification judgment condition is activated. Otherwise, it indicates that the current ambient temperature is not easy to cause oil emulsification, and the oil emulsification judgment condition is not activated. The oil emulsification judgment condition can be pre-set according to experience (for example, the ambient temperature of the vehicle operation is-35℃-0℃), which is not limited in the embodiment. In the case of activating the oil emulsification judgment condition, the operation of obtaining the vehicle operation parameters and the vehicle operation mode of the hybrid vehicle is performed.

[0035] S120, determining the oil emulsification risk factor of the hybrid vehicle according to the vehicle operation parameters, and determining the risk level corresponding to the oil emulsification risk factor.

[0036] The oil emulsification risk factor can be understood as a risk factor of oil emulsification. The risk level can be understood as a level of causing oil emulsification.

[0037] Specifically, the risk level includes but is not limited to a low risk level, a medium risk level and a high risk level. According to at least one vehicle operation parameter of the hybrid vehicle, the oil emulsification risk factor of the hybrid vehicle is determined based on at least one vehicle operation parameter. The risk level corresponding to the oil emulsification risk factor is determined based on the oil emulsification risk factor of the hybrid vehicle and the preset risk level interval. The preset risk level interval can be pre-set according to experience, which is not limited in the embodiment.

[0038] S130, determining an engine oil emulsification inhibition coping strategy based on the vehicle operation mode and the risk level of the vehicle, wherein the emulsification inhibition coping strategy includes but is not limited to coping strategies for controlling engine accessories, engine speed, engine load, and vehicle heating, and the engine accessories include but are not limited to electric water pumps and piston cooling nozzles.

[0039] The engine oil emulsification inhibition coping strategy can be understood as a control strategy for inhibiting engine oil emulsification.

[0040] Specifically, based on the vehicle operation mode (pure electric mode, series mode and parallel mode) and the corresponding risk level of the vehicle (low risk level, medium risk level and high risk level), the engine oil emulsification inhibition strategy of the vehicle is determined. For example, if the vehicle operation mode is pure electric mode and the corresponding risk level is low risk, the engine oil emulsification inhibition coping strategy of the hybrid vehicle is determined as the coping strategy corresponding to the pure electric mode and low risk. It can be understood that the engine oil emulsification inhibition coping strategy can be pre-set according to experience for different risk levels corresponding to different vehicle operation modes. With the continuous progress of technology, if a better engine oil emulsification inhibition coping strategy appears, the engine oil emulsification inhibition coping strategy can be upgraded or changed through vehicle system upgrade or user customization.

[0041] Optionally, the vehicle operation mode is pure electric mode, and the engine oil emulsification inhibition coping strategy is determined based on the vehicle operation mode and the risk level of the vehicle, comprising:

[0042] If the risk factor level of the vehicle is low risk, the electric heater inside the oil pan is used for heating, and when the vehicle reaches the first emulsification inhibition trigger condition, the engine operation mode is switched to increase the coolant temperature and the oil temperature; or

[0043] If the risk factor level of the vehicle is medium risk, the electric heater inside the oil pan is used for heating, and when the vehicle reaches the second emulsification inhibition trigger condition, the engine operation mode is switched to increase the coolant temperature and the oil temperature; or

[0044] If the risk factor level of the vehicle is high risk, the electric heater inside the oil pan is used for heating, when the state of charge reaches the preset charge threshold, the motor drives the engine crank to stir the oil in the oil pan, and when the vehicle reaches the third emulsification inhibition trigger condition, the engine operation mode is switched to increase the coolant temperature and the oil temperature.

[0045] The first emulsion inhibition trigger condition can be understood as a condition for triggering an emulsion inhibition coping strategy when the vehicle operating mode is the pure electric mode and the risk factor level of the vehicle is low risk. The second emulsion inhibition trigger condition can be understood as a condition for triggering an emulsion inhibition coping strategy when the vehicle operating mode is the pure electric mode and the risk factor level of the vehicle is medium risk. The third emulsion inhibition trigger condition can be understood as a condition for triggering an emulsion inhibition coping strategy when the vehicle operating mode is the pure electric mode and the risk factor level of the vehicle is high risk.

[0046] Optionally, the first emulsion inhibition condition includes but is not limited to that the oil temperature reaches a first preset temperature threshold, the heater is turned on, and the state of charge is lower than a first preset state of charge threshold. The second emulsion inhibition condition includes but is not limited to that the oil temperature reaches a second preset temperature threshold, the heater is turned on, and the state of charge is lower than a second preset state of charge threshold. The third emulsion inhibition trigger condition includes but is not limited to that the oil temperature reaches a third preset temperature threshold, the heater is turned on, and the state of charge is lower than a third preset state of charge threshold. The first preset temperature threshold and the first preset state of charge threshold, the second preset temperature threshold and the second preset state of charge threshold, and the third preset temperature threshold and the third preset state of charge threshold can be pre-set according to experience, which is not limited in the embodiment.

[0047] For example, in the pure electric mode of the hybrid vehicle, when the hybrid vehicle is in low risk, an electric heater located inside the oil pan is used for 25% power heating. When the oil temperature reaches 40℃, or the heater is needed, or the state of charge is lower than 12%, the engine operating mode is entered, and the coolant temperature and the oil temperature are quickly raised through engine combustion. When the hybrid vehicle is in medium risk, an electric heater located inside the oil pan is used for 50% power heating. When the oil temperature reaches 20℃, or the heater is needed, or the state of charge is lower than 20%, the engine operating mode is entered in advance, and the coolant temperature and the oil temperature are quickly raised through engine combustion. When the hybrid vehicle is in high risk, an electric heater located inside the oil pan is used for 100% power heating. When the state of charge is high, the motor will drag the engine, the crank will agitate the oil in the oil pan, and the oil will be uniformly heated. When the oil temperature reaches 10℃, or the heater is needed, or the state of charge is lower than 30%, the engine operating mode is entered in advance, and the coolant temperature and the oil temperature are quickly raised through engine combustion.

[0048] Optionally, the vehicle operating mode is the series mode, and the determination of the oil emulsion inhibition coping strategy based on the vehicle operating mode and the risk level of the vehicle includes:

[0049] If the risk factor level of the vehicle is low risk, the hybrid vehicle is controlled to operate according to a preset hybrid strategy after the engine is started; or

[0050] If the risk factor level of the vehicle is medium risk, when the vehicle reaches the fourth emulsion inhibition trigger condition, the electric water pump is prohibited from working, the target state of charge of the power battery is increased, the engine load and speed are increased, the oil heater is controlled to heat, the engine combustion and the electric heater inside the oil pan are heated;

[0051] If the risk factor level of the vehicle is high risk, when the vehicle reaches the fifth emulsion inhibition trigger condition, the electric water pump and the piston cooling nozzle are prohibited from working, the target state of charge of the power battery, the engine load and the speed are increased, the oil heater, the engine combustion and the electric heater inside the oil pan are controlled to heat.

[0052] The fourth emulsion inhibition trigger condition can be understood as a condition for triggering an emulsion inhibition coping strategy when the vehicle operating mode is series mode and the risk factor level of the vehicle is medium risk. The fifth emulsion inhibition trigger condition can be understood as a condition for triggering an emulsion inhibition coping strategy when the vehicle operating mode is series mode and the risk factor level of the vehicle is high risk. The preset hybrid strategy can be understood as the default hybrid strategy of the vehicle.

[0053] Optionally, the fourth emulsion inhibition condition includes but is not limited to that the oil temperature is greater than a fourth preset temperature threshold. The second emulsion inhibition condition includes but is not limited to that the oil temperature is greater than a fifth preset temperature threshold. The fourth preset temperature threshold and the fifth preset temperature threshold can be pre-set according to experience, which is not limited in the embodiment.

[0054] For example, in the series mode of the hybrid vehicle, when the hybrid vehicle is in low risk, after the engine starts, the vehicle operates according to the default hybrid strategy, that is, the fuel consumption is guaranteed to be the lowest and the motor working efficiency is the highest, the power is coupled between different assemblies, and the engine operating point is controlled to operate in the optimal economic zone. When the hybrid vehicle is in medium risk, the engine starts when the oil temperature is greater than 20°C, the electric water pump is prohibited. The target state of charge of the power battery is increased, the charging demand is met by increasing the engine load and speed, the battery capacity is increased, the oil temperature is rapidly increased by 50% power heating of the oil heater, and the oil temperature is rapidly increased by double measures of engine combustion and electric heating. When the hybrid vehicle is in high risk, the engine starts when the oil temperature is greater than 10°C, the electric water pump and the piston cooling nozzle are prohibited from working. The target state of charge of the power battery is increased, the charging demand is met by increasing the engine load and speed, the battery capacity is increased, the oil temperature is rapidly increased by 100% power heating of the oil heater, and the oil temperature is rapidly increased by double power heating measures of engine combustion and electric heater, thereby reducing the risk level of oil emulsification.

[0055] Optionally, the vehicle operating mode is parallel mode, and the oil emulsion inhibition coping strategy is determined based on the vehicle operating mode and the risk level of the vehicle, including:

[0056] If the risk factor level of the hybrid vehicle is low risk, the hybrid vehicle is controlled to operate according to a preset hybrid strategy by engine warming up; or

[0057] If the risk factor level of the vehicle is medium risk, the vehicle is maintained to operate normally in the hybrid strategy by engine warming up; or

[0058] If the risk factor level of the vehicle is high risk, the charging demand of the target state of charge and the engine load are increased, and the electric heater inside the oil pan is used for heating when the current state of charge is greater than a preset charge threshold.

[0059] For example, in the parallel mode of the hybrid vehicle, when the hybrid vehicle is in low risk, the parallel mode vehicle speed is high and the demand torque is large, the engine is warmed up quickly to control the hybrid vehicle to operate according to the preset hybrid strategy. When the hybrid vehicle is in medium risk, the parallel vehicle speed is high and the demand torque is large, the engine is warmed up quickly, and the hybrid vehicle operates according to the preset hybrid strategy. When the hybrid vehicle is in high risk, the target state of charge charging demand is increased, and the engine load is increased to warm up. If the current state of charge is greater than a higher threshold, the electric heater is used for low-power heating to avoid excessive power demand and insufficient power response.

[0060] In the embodiment of the application, different engine oil emulsion inhibition coping strategies are determined when the vehicle is in low risk level, medium risk level and high risk level respectively in the pure electric mode, series mode and parallel mode of the vehicle. Therefore, the optimal engine oil emulsion inhibition coping strategy is selected and executed, thereby effectively inhibiting the engine oil emulsion of the vehicle and maintaining the normal operation of the engine.

[0061] The technical scheme of the embodiment of the application comprises the following steps: obtaining the vehicle operating parameters and the vehicle operating mode of the hybrid vehicle; establishing the relationship between the vehicle operating parameters and the vehicle operating mode. Then, the engine oil emulsion risk factor of the hybrid vehicle is determined according to the vehicle operating parameters, and the risk level corresponding to the engine oil emulsion risk factor is determined. The risk level of the current engine oil emulsion of the hybrid vehicle can be accurately determined. Finally, the engine oil emulsion inhibition coping strategy is determined based on the vehicle operating mode and the risk level of the vehicle, wherein the inhibition coping strategy includes but is not limited to the coping strategy for controlling the engine accessories, the engine speed, the engine load and the vehicle heating. The engine accessories include but are not limited to the electric water pump and the piston cooling nozzle. According to the corresponding operating mode and risk level of the hybrid vehicle, the optimal engine oil emulsion inhibition coping strategy is selected, thereby solving the problems of engine oil emulsion, shortened engine oil life and affected engine operation, and achieving the beneficial effect of effectively inhibiting the engine oil emulsion of the hybrid vehicle.

[0062] Embodiment two

[0063] Figure 2a This is a flowchart of a method for suppressing oil emulsification in a hybrid vehicle according to Embodiment 2 of the present invention. This embodiment further refines how to determine the oil emulsification risk factor of the hybrid vehicle based on the vehicle operating parameters described in the previous embodiment. Optionally, the vehicle operating parameters include the oil temperature at startup, the oil temperature at shutdown, the mileage, and the average vehicle speed. Accordingly, determining the oil emulsification risk factor of the hybrid vehicle based on the vehicle operating parameters includes: determining an oil temperature influence factor based on the oil temperature at startup and the oil temperature at shutdown; determining a mileage influence factor based on the single mileage of the hybrid vehicle; and determining a speed influence factor based on the average vehicle speed. The oil emulsification risk factor of the hybrid vehicle is determined based on the oil temperature influence factor, the mileage influence factor, the speed influence factor, and the number of driving cycles. For detailed implementation, please refer to the description of this embodiment. Technical features that are the same as or similar to those in the previous embodiments will not be repeated here.

[0064] like Figure 2a As shown, the method includes:

[0065] S210. Obtain the vehicle operating parameters and vehicle operating mode of the hybrid vehicle.

[0066] Optionally, the vehicle operating parameters include the engine oil temperature at startup, the engine oil temperature at shutdown, the mileage, and the average vehicle speed.

[0067] S220. Determine the oil temperature influence factor based on the oil temperature of the hybrid vehicle when starting and when shutting down, determine the mileage influence factor based on the single driving mileage of the hybrid vehicle, and determine the vehicle speed influence factor based on the average vehicle speed of the hybrid vehicle.

[0068] Specifically, the oil temperature influencing factors are determined for hybrid vehicles based on the oil temperature during startup and shutdown. Pre-set temperature ranges for oil temperature during shutdown and corresponding temperature influencing factors for each range are used. The oil temperature influencing factors are determined based on the temperature range of the oil temperature during shutdown obtained from sensors. To facilitate finding the temperature range of the oil temperature, a table can be created that links different pre-set temperature ranges and their corresponding temperature influencing factors. After determining the temperature range of the oil temperature, the associated temperature influencing factors for that range are directly retrieved. For example, the correspondence between different temperature threshold ranges and temperature influencing factors is shown in Table 1.

[0069]

[0070]

[0071] Table 1

[0072] Specifically, the mileage and average speed of a user's vehicle also change. Shorter mileage and lower average speed increase the likelihood of oil emulsification, thus raising the impact factor. Therefore, this embodiment of the invention considers the influence of mileage and average speed on the oil emulsification risk factor for each driving cycle. Furthermore, mileage affects engine operating time, and average speed affects engine workload, both of which are beneficial for increasing oil temperature. In this embodiment, the impact factor is corrected based on mileage and average speed.

[0073] In this embodiment of the invention, based on the oil temperature at startup and shutdown, the temperature influence factor is corrected by driving mileage and average vehicle speed, thereby improving the accuracy of the influence factor.

[0074] For example, the single-trip mileage of hybrid vehicles and their associated mileage influencing factors are shown in the table below:

[0075]

[0076] Table 2

[0077] For example, the average vehicle speed and its associated speed factor are shown in the table below:

[0078]

[0079] Table 3

[0080] It is understandable that the range of parameter values ​​for different vehicle operating parameters corresponds one-to-one with their associated influencing factors.

[0081] S230. Based on the oil temperature influence factor, the mileage influence factor, the vehicle speed influence factor, and the number of driving cycles, determine the oil emulsification risk factor of the hybrid vehicle, and determine the risk level corresponding to the oil emulsification risk factor.

[0082] A driving cycle can be understood as the total mileage divided by the number of starts or stops. For example, a driving cycle consists of one start and one stop for a hybrid vehicle.

[0083] Understandably, the oil temperature at startup and shutdown are the highest levels for judging oil emulsification. However, in hybrid vehicles, after the engine is shut off, as the ambient temperature decreases, water vapor in the crankcase becomes supersaturated and will condense into water at the lowest temperature point. This is especially true when the engine is shut off at a low temperature, making it highly susceptible to water vapor condensation entering the oil pan. Therefore, the oil temperature at shutdown can be considered a primary factor in assessing oil emulsification risk. Different oil temperatures at startup and shutdown correspond to different influencing factors. It's worth noting that the lower the startup and shutdown temperatures, the greater the risk factor. Higher oil temperatures generally indicate a lower risk of oil emulsification. When the oil temperature is above the emulsification temperature, it's unnecessary to assess whether the hybrid vehicle's oil is emulsified.

[0084] Optionally, determining the oil emulsification risk factor of the hybrid vehicle based on the oil temperature influence factor, the mileage influence factor, the vehicle speed influence factor, and the number of driving cycles includes: using the product of the oil temperature influence factor, the mileage influence factor, the vehicle speed influence factor, and the number of driving cycles as the oil emulsification risk factor of the hybrid vehicle.

[0085] The number of driving cycles can be preset based on experience; this embodiment does not limit it. Generally, one start-stop cycle constitutes one driving cycle, which can be obtained by dividing the total mileage traveled by the number of times the vehicle is started or stopped.

[0086] For example, the product of the oil temperature influence factor associated with the oil temperature range, the mileage influence factor associated with the mileage range, and the vehicle speed influence factor associated with the average vehicle speed range with the preset number of drives is used as the oil emulsification risk factor for hybrid vehicles.

[0087] In this embodiment of the invention, considering that the oil emulsification risk factor calculated from a single driving cycle is inaccurate, multiple driving cycles can be preset. Based on the vehicle operating parameters and their corresponding influencing factors obtained from multiple driving cycles, the oil emulsification risk factor of the hybrid vehicle can be determined. This improves the accuracy and reliability of the oil emulsification risk factor determination results.

[0088] S240. Determine an oil emulsification suppression strategy based on the vehicle's operating mode and risk level. The emulsification suppression strategy includes, but is not limited to, strategies for controlling engine accessories, engine speed, engine load, and vehicle heating. The engine accessories include, but are not limited to, electric water pumps and piston cooling nozzles.

[0089] Optionally, the method further includes: after the hybrid vehicle is turned off, acquiring the current oil temperature and state of charge of the hybrid vehicle, and determining the control strategy after the hybrid vehicle is turned off based on the oil temperature, the current state of charge of the vehicle and a preset charge threshold, wherein the control strategy after the hybrid vehicle is turned off includes, but is not limited to, oil heating, starting the vehicle directly and prohibiting pure electric mode, and controlling the hybrid vehicle to operate according to a preset hybrid strategy.

[0090] Specifically, the system acquires the current oil temperature of the hybrid vehicle to determine if there is a risk of oil emulsification. If the current oil temperature is higher than the emulsification temperature (e.g., above 80°C), emulsification suppression is not implemented. Conversely, if the current oil temperature is lower than the emulsification temperature (e.g., above 40°C at startup), the system acquires the vehicle's state of charge (SBC) to determine if it supports the post-shutdown control strategy. If yes (e.g., SBC greater than 50%), full-power heating is applied until the oil temperature reaches a level higher than the emulsification temperature (e.g., 80°C), at which point the post-shutdown control strategy ends. If no (e.g., SBC less than 30%), the system checks if the oil temperature is below zero. When the oil temperature is below 0°C, the engine is started directly in the next driving cycle, and the pure electric mode is not used. When the oil temperature is above 0°C, the aforementioned emulsification suppression strategy is implemented in the next driving cycle.

[0091] For example, if the oil temperature reaches or exceeds the preset first oil temperature (e.g., 80°C) during the current driving cycle, the oil emulsification risk factor will automatically reset to 0, and the control strategy will switch to the vehicle's default control strategy. If the oil temperature reaches or exceeds the preset first oil temperature when the engine is turned off during the current driving cycle, the oil emulsification risk factor will automatically reset to 0 and start counting again from the next driving cycle. If the oil temperature does not reach the preset first oil temperature when the engine is turned off during the current cycle, for example, if the user's driving distance is very short and pure electric mode is used continuously or the engine runs for a short time without sufficient heating of the oil, then the post-turn-off control strategy needs to be considered. Determine whether the current state of charge supports the vehicle's post-turn-off control strategy. If so, after the engine is turned off, the battery-powered oil heater will be used to heat the oil until the preset first oil temperature is reached, increasing water vapor evaporation and reducing liquid water formation. If the current state of charge cannot support the vehicle's post-turn-off control strategy, to avoid the risk of battery depletion, heating will be terminated even if the oil temperature does not reach the preset first oil temperature after the engine is turned off. If the engine oil temperature is below the preset second engine oil temperature (e.g., 0°C), start the engine directly in series mode during the next driving cycle to ensure a thorough warm-up as quickly as possible. If the engine oil temperature is above the preset second engine oil temperature, employ an emulsification suppression strategy during the next driving cycle.

[0092] The technical solution of this invention determines the oil temperature influence factor based on the oil temperature of the hybrid vehicle during startup and shutdown, the mileage influence factor based on the single driving mileage of the hybrid vehicle, and the vehicle speed influence factor based on the average vehicle speed of the hybrid vehicle; this accurately determines the influence factors corresponding to different vehicle operating parameters. Then, based on the oil temperature influence factor, the mileage influence factor, the vehicle speed influence factor, and the number of driving cycles, the oil emulsification risk factor of the hybrid vehicle is determined. By determining the oil emulsification risk factor of the hybrid vehicle based on the influence factors corresponding to multiple vehicle operating parameters, the accuracy and reliability of the oil emulsification risk factor are improved.

[0093] Figure 2b A flowchart is provided for a method to suppress oil emulsification in hybrid vehicles. For example... Figure 2b As shown, the method for inhibiting oil emulsification in hybrid vehicles specifically includes the following steps:

[0094] Step 1: Activate the oil emulsification judgment conditions.

[0095] For example, the oil emulsification detection is activated each time the ambient temperature of the vehicle is between -35°C and 0°C.

[0096] Step 2: Determine the risk level of engine oil emulsification

[0097] Specifically, after the engine is turned off, as the ambient temperature decreases, water vapor in the crankcase becomes supersaturated and condenses into water at the lowest temperature. This is especially true when the engine is turned off at a low temperature, making it highly susceptible to water vapor condensation and entry into the oil pan. Therefore, the oil temperature after engine shutdown is a crucial factor in determining the oil emulsification risk factor. This embodiment determines the emulsification risk factor based on the oil temperature at different startup times and after engine shutdown, while also incorporating vehicle driving distance and average vehicle speed for auxiliary correction. Specifically, the oil emulsification risk factor is the product of the oil temperature at engine shutdown, driving distance, average vehicle speed, and the number of driving cycles. The oil temperature is derived from a sensor installed in the main oil passage of the vehicle engine (vehicle configuration, no additional installation required), while driving distance and average vehicle speed are calculated from the engine control unit. The oil temperature at startup and engine shutdown represents the highest level of oil emulsification. Different oil temperatures at startup and shutdown correspond to different influencing factors; the lower the startup and shutdown temperatures, the greater the risk factor.

[0098] Step 3: Determine the oil emulsification suppression strategies for different vehicle modes at different oil emulsification risk levels.

[0099] If the powertrain controller detects that multiple consecutive driving cycles are conducted at low temperatures, low speeds, and low mileage, it determines that the emulsification risk level is high. The hybrid vehicle system will determine different oil emulsification suppression strategies based on different risk levels, thereby increasing the oil rise rate and suppressing oil emulsification.

[0100] For example, when the risk level is low, the following applies: In the pure electric mode of the hybrid vehicle, an electric heater located inside the oil pan is used to heat the engine at 25% power. When the oil temperature reaches 40°C, or when there is a need for heating, or when the state of charge is below 12%, the engine enters the engine operation mode, and the coolant and oil temperatures are quickly raised through engine combustion; In the series mode of the hybrid vehicle, after the engine starts, it operates according to a preset hybrid strategy, which ensures the lowest fuel consumption and the highest motor efficiency. Different assemblies are coupled through power, and the engine operating point is controlled to operate in the optimal economic zone; In the parallel mode of the hybrid vehicle, the vehicle speed is higher and the torque demand is greater, so the engine is used to achieve rapid heating.

[0101] When the risk level is medium risk, the following measures are implemented: In the pure electric mode of the hybrid vehicle, an electric heater located inside the oil pan is used to heat the oil at 50% power. When the oil temperature reaches 20°C, or when heating is needed, or when the state of charge is below 20%, the engine is switched to engine operation mode in advance. Through engine combustion, the coolant and oil temperatures are rapidly increased. In the series mode of the hybrid vehicle, the engine is started when the oil temperature is >20°C, and the electric water pump is prohibited. The target state of charge of the power battery is increased by increasing the engine load and speed to meet the charging demand. The increased battery charge is then heated by the oil heater at 50% power. The engine combustion and electric heating are used to rapidly increase the oil temperature. In the parallel mode of the hybrid vehicle, where the vehicle speed is higher and the torque demand is greater, the engine is used to rapidly warm up the engine and maintain the preset hybrid strategy.

[0102] When the risk level is high, the following measures are implemented: In the pure electric mode of a hybrid vehicle, an electric heater located inside the oil pan is used for 100% power heating. When the state of charge (SOC) is sufficiently high, the drive motor will drive the engine, and the crankshaft will agitate the oil in the oil pan to achieve uniform heating of the oil. When the oil temperature reaches 10°C, or when there is a need for heating, or when the SOC is below 30%, the engine will continue to operate earlier, and the coolant and oil temperatures will be rapidly increased through engine combustion. In the series mode of a hybrid vehicle, the engine will start when the oil temperature is >10°C, and the electric water pump and piston cooling nozzles will be prohibited from operating. The target SOC of the power battery is increased by increasing the engine load and speed to meet the charging demand. The increased battery capacity is used for 100% power heating of the oil heater, and the dual high-power heating measures of engine combustion and electric heater rapidly increase the oil temperature, reducing the risk level of oil emulsification. In the parallel mode of a hybrid vehicle, the target SOC charging demand is increased, and the engine load is increased to achieve warm-up. If the current state of charge is greater than a higher threshold, use an electric heater for low-power heating to avoid excessive power demand and insufficient power response.

[0103] For example, the correspondence between risk levels and response strategies is shown in the table below:

[0104]

[0105]

[0106] Table 4

[0107] For example, if the oil temperature reaches 80°C or higher in the current driving cycle, the oil emulsification risk factor will automatically reset to 0, and the control strategy will switch to the vehicle's default control strategy. If the oil temperature reaches 80°C or higher when the engine is turned off in the current driving cycle, the oil emulsification risk factor will automatically reset to 0 and start counting again from the next driving cycle. If the oil temperature does not reach 80°C when the engine is turned off in the current cycle, for example, if the user's driving distance is very short and pure electric mode is used continuously or the engine runs for a short time without sufficient heating of the oil, then the post-turn-off control strategy needs to be considered. Determine whether the current state of charge supports the vehicle's post-turn-off control strategy. If so, after the engine is turned off, the battery-powered oil heater will be used to heat the oil until it reaches 80°C, increasing water vapor evaporation and reducing liquid water formation. If the current state of charge cannot support the vehicle's post-turn-off control strategy, to avoid the risk of battery depletion, heating should be stopped even if the oil temperature does not reach 80°C after the engine is turned off. If the oil temperature is below 0°C, start the engine directly in series mode during the next driving cycle to ensure a thorough warm-up as quickly as possible. If the oil temperature is above 0°C, employ an emulsification suppression strategy during the next driving cycle.

[0108] For example, the control strategy for a hybrid vehicle after the engine is turned off is shown in the table below:

[0109]

[0110] Table 5

[0111] Step 4: Exit the oil emulsification judgment condition

[0112] For example, the conditions for exiting oil emulsification may include: the current driving cycle, when the oil temperature reaches 80°C or higher when the engine is turned off, and / or the next driving cycle, when the oil temperature reaches 40°C or higher when the engine is started.

[0113] The technical solution of this invention assesses and classifies the risk level of oil emulsification using driving behavior, ambient temperature, and engine oil temperature as weighting factors. Based on the oil emulsification risk level, it implements oil heating solutions for three modes (pure electric, series, and parallel) and three power sources (battery, motor, and engine). Based on the oil emulsification level, it implements strategies for engine accessories (electric water pump, piston cooling nozzles), engine speed and load changes, and heater control. Based on the engine oil temperature when the vehicle is turned off, it develops a method for oil heating after engine shutdown and a hybrid strategy for the next cycle. This solves the problems of oil emulsification, shortened oil life, and impact on engine operation, achieving the beneficial effect of effectively suppressing oil emulsification in hybrid vehicles.

[0114] Example 3

[0115] Figure 3 This is a schematic diagram of a device for inhibiting oil emulsification in hybrid vehicles, provided in Embodiment 3 of the present invention. Figure 3 As shown, the device includes: an operating parameter and operating mode acquisition module 310, a risk level determination module 320, and an oil emulsification inhibition response strategy determination module 330.

[0116] The system includes: an operating parameter and operating mode acquisition module 310, used to acquire the vehicle operating parameters and operating mode of the hybrid vehicle; a risk level determination module 320, used to determine the oil emulsification risk factor of the hybrid vehicle based on the vehicle operating parameters, and to determine the risk level corresponding to the oil emulsification risk factor; and an oil emulsification suppression response strategy determination module 330, used to determine an oil emulsification suppression response strategy based on the vehicle operating mode and the vehicle's risk level. The emulsification suppression response strategy includes, but is not limited to, response strategies for controlling engine accessories, engine speed, engine load, and vehicle heating. The engine accessories include, but are not limited to, electric water pumps and piston cooling nozzles.

[0117] The technical solution of this invention acquires the vehicle operating parameters and operating mode of the hybrid vehicle through an operating parameter and operating mode acquisition module, and establishes the relationship between the vehicle operating parameters and the vehicle operating mode. Then, through a risk level determination module, the oil emulsification risk factor of the hybrid vehicle is determined based on the vehicle operating parameters, and the risk level corresponding to the oil emulsification risk factor is determined; the current oil emulsification risk level of the hybrid vehicle can be accurately determined. Finally, through an oil emulsification suppression and response strategy determination module, an oil emulsification suppression and response strategy is determined based on the vehicle operating mode and the vehicle's risk level. The emulsification suppression and response strategy includes, but is not limited to, strategies for controlling engine accessories, engine speed, engine load, and vehicle heater. The engine accessories include, but are not limited to, electric water pumps and piston cooling nozzles. By selecting the optimal oil emulsification suppression and response strategy according to the corresponding operating mode and risk level of the hybrid vehicle, the problems of oil emulsification, shortened oil life, and impact on engine operation are solved, achieving the beneficial effect of effectively suppressing oil emulsification in hybrid vehicles.

[0118] Optionally, the vehicle operating parameters include engine oil temperature at startup, engine oil temperature at shutdown, mileage, and average vehicle speed; correspondingly, the risk level determination module includes:

[0119] The influencing factor determination unit is used to determine the oil temperature influencing factor based on the oil temperature of the hybrid vehicle when starting and when shutting down, the driving mileage influencing factor based on the single driving mileage of the hybrid vehicle, and the vehicle speed influencing factor based on the average vehicle speed of the hybrid vehicle.

[0120] The risk factor determination unit is used to determine the oil emulsification risk factor of the hybrid vehicle based on the oil temperature influence factor, the mileage influence factor, the vehicle speed influence factor, and the number of driving cycles.

[0121] Optionally, the risk factor determination unit is used for:

[0122] The product of the oil temperature influence factor, the mileage influence factor, the vehicle speed influence factor, and the number of driving cycles is used as the oil emulsification risk factor for hybrid vehicles.

[0123] Optionally, the vehicle operating mode is pure electric mode, and correspondingly, the oil emulsification inhibition response strategy determination module includes:

[0124] The first low-risk response strategy unit is used to heat the vehicle using an electric heater located inside the oil pan if the vehicle's risk factor level is low, and to switch to engine operation mode to increase coolant and oil temperatures when the vehicle reaches the first emulsification inhibition trigger condition; or

[0125] The first medium-risk response strategy unit is used to heat the vehicle using an electric heater located inside the oil pan if the vehicle's risk factor level is medium risk, and to switch to engine operation mode to increase coolant and oil temperatures when the vehicle reaches the second emulsification inhibition trigger condition; or

[0126] The first high-risk response strategy unit is used to heat the oil in the oil pan by an electric heater located inside the oil pan if the risk factor level of the vehicle is high risk. When the state of charge reaches a preset charge threshold, the drive motor drives the engine crank to agitate the oil in the oil pan. When the vehicle reaches the third emulsification inhibition trigger condition, the unit switches to engine operation mode to increase the coolant temperature and oil temperature.

[0127] Optionally, the vehicle operating mode is a series mode, and correspondingly, the oil emulsification inhibition response strategy determination module includes:

[0128] The second low-risk response strategy unit is used to control the hybrid vehicle to operate according to a preset hybrid strategy after the engine starts if the risk factor level of the vehicle is low; or

[0129] The second risk response strategy unit is used to, if the vehicle's risk factor level is medium risk, when the vehicle reaches the fourth emulsification inhibition trigger condition, prohibit the electric water pump from operating, increase the target state of charge of the power battery, increase the engine load and speed, control the oil heater to heat, and enable engine combustion and heating by the electric heater located inside the oil pan; or

[0130] The second high-risk response strategy unit is used to prevent the electric water pump and piston cooling nozzle from working when the vehicle reaches the fifth emulsification inhibition trigger condition if the risk factor level of the vehicle is high risk, increase the target state of charge of the power battery, engine load and speed, and control the oil heater, engine combustion and the electric heater located inside the oil pan to heat the vehicle.

[0131] Optionally, the vehicle operating mode is a parallel mode, and correspondingly, the oil emulsification inhibition response strategy determination module includes:

[0132] The third low-risk response strategy unit is used to, if the risk factor level of the hybrid vehicle is low risk, warm up the engine and operate according to the normal hybrid strategy of the vehicle; or

[0133] The third risk response strategy unit is used to maintain the normal operation of the vehicle's hybrid strategy by warming up the engine if the vehicle's risk factor level is medium risk; or

[0134] The third high-risk response strategy unit is used to increase the charging demand and engine load of the target state of charge if the risk factor level of the vehicle is high risk, and to use an electric heater located inside the oil pan for heating if the current state of charge is greater than a preset state of charge threshold.

[0135] The device further includes:

[0136] The control strategy determination module after engine shutdown is used to obtain the current oil temperature and state of charge of the hybrid vehicle after the hybrid vehicle is turned off, and determine the control strategy after the hybrid vehicle is turned off based on the oil temperature, the current state of charge of the vehicle and a preset charge threshold. The control strategy after the hybrid vehicle is turned off includes, but is not limited to, oil heating, starting the vehicle directly and prohibiting pure electric mode, and operating according to the normal hybrid strategy of the vehicle.

[0137] The hybrid vehicle oil emulsification suppression device provided in this embodiment of the invention can execute the hybrid vehicle oil emulsification suppression method provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the method.

[0138] Example 4

[0139] Figure 4 A schematic diagram of an electronic device 10 that can be used to implement embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0140] like Figure 4 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0141] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0142] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the method of suppressing oil emulsification in hybrid vehicles.

[0143] In some embodiments, the suppression of oil emulsification in the hybrid vehicle can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the suppression of oil emulsification in the hybrid vehicle described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the suppression of oil emulsification in the hybrid vehicle by any other suitable means (e.g., by means of firmware).

[0144] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SPCs) with state of charge, load-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transferring data and instructions to the storage system, the at least one input device, and the at least one output device.

[0145] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0146] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0147] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0148] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0149] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0150] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0151] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for suppressing oil emulsification in hybrid vehicles, characterized in that, include: Obtain vehicle operating parameters and vehicle operating modes of hybrid vehicles; The oil emulsification risk factor of the hybrid vehicle is determined based on the vehicle operating parameters, and the risk level corresponding to the oil emulsification risk factor is determined. Based on the vehicle's operating mode and risk level, an oil emulsification suppression strategy is determined. This strategy includes, but is not limited to, strategies for controlling engine accessories, engine speed, engine load, and vehicle heating. Engine accessories include, but are not limited to, electric water pumps and piston cooling nozzles. The vehicle operating parameters include the engine oil temperature at startup, the engine oil temperature at shutdown, mileage, and average vehicle speed; determining the engine oil emulsification risk factor of the hybrid vehicle based on the vehicle operating parameters includes: The oil temperature influence factor is determined based on the oil temperature of the hybrid vehicle at startup and at shutdown, the mileage influence factor is determined based on the single driving mileage of the hybrid vehicle, and the vehicle speed influence factor is determined based on the average vehicle speed of the hybrid vehicle. The oil emulsification risk factor of hybrid vehicles is determined based on the oil temperature influence factor, the mileage influence factor, the vehicle speed influence factor, and the number of driving cycles.

2. The method according to claim 1, characterized in that, The determination of the oil emulsification risk factor for hybrid vehicles based on the oil temperature influence factor, the mileage influence factor, the vehicle speed influence factor, and the number of driving cycles includes: The product of the oil temperature influence factor, the mileage influence factor, the vehicle speed influence factor, and the number of driving cycles is used as the oil emulsification risk factor for hybrid vehicles.

3. The method according to claim 1, characterized in that, The vehicle operates in pure electric mode. The strategy for determining oil emulsification inhibition based on the vehicle's operating mode and risk level includes: If the vehicle's risk factor level is low, an electric heater located inside the oil pan is used for heating, and when the vehicle reaches the first emulsification inhibition trigger condition, the engine operation mode is switched to increase the coolant and oil temperatures; or If the vehicle's risk factor level is medium risk, an electric heater located inside the oil pan is used for heating, and when the vehicle reaches the second emulsification inhibition trigger condition, the engine operation mode is switched to increase the coolant and oil temperatures; or If the risk factor level of the vehicle is high risk, an electric heater located inside the oil pan is used for heating. When the state of charge reaches a preset charge threshold, the drive motor drives the engine crank to agitate the oil in the oil pan. When the vehicle reaches the third emulsification inhibition trigger condition, the engine operation mode is switched to increase the coolant temperature and oil temperature.

4. The method according to claim 1, characterized in that, The vehicle operating mode is a series mode. The step of determining the oil emulsification inhibition strategy based on the vehicle operating mode and the vehicle's risk level includes: If the vehicle's risk factor level is low, then after the engine starts, the hybrid vehicle is controlled to operate according to a preset hybrid strategy; or If the vehicle's risk factor level is medium risk, then when the vehicle reaches the fourth emulsification inhibition trigger condition, the electric water pump will be prohibited from operating, the target state of charge of the power battery will be increased, the engine load and speed will be increased, the oil heater will be controlled to heat, and the engine combustion and the electric heater located inside the oil pan will be used for heating; or If the risk factor level of the vehicle is high risk, then when the vehicle reaches the fifth emulsification inhibition trigger condition, the electric water pump and piston cooling nozzle are prohibited from working, the target state of charge of the power battery, engine load and speed are increased, and the oil heater, engine combustion and electric heater located inside the oil pan are controlled to heat.

5. The method according to claim 1, characterized in that, The vehicle operates in parallel mode. The strategy for determining oil emulsification inhibition based on the vehicle's operating mode and risk level includes: If the risk factor level of the hybrid vehicle is low, then by raising the engine temperature, the hybrid vehicle is controlled to operate according to a preset hybrid strategy; or If the vehicle's risk factor level is medium risk, then the engine is warmed up to maintain normal hybrid operation; or If the risk factor level of the vehicle is high risk, the charging requirement and engine load of the target state of charge are increased, and if the current state of charge is greater than the preset state of charge threshold, an electric heater located inside the oil pan is used for heating.

6. The method according to claim 1, characterized in that, Also includes: After the hybrid vehicle is turned off, the current oil temperature and state of charge of the hybrid vehicle are obtained. Based on the oil temperature, the current state of charge of the vehicle and the preset charge threshold, the control strategy after the hybrid vehicle is turned off is determined. The control strategy after the hybrid vehicle is turned off includes, but is not limited to, oil heating, starting the vehicle directly and prohibiting pure electric mode, and controlling the hybrid vehicle to operate according to the preset hybrid strategy.

7. A device for inhibiting oil emulsification in hybrid vehicles, characterized in that, include: The operating parameter and operating mode acquisition module is used to acquire the vehicle operating parameters and vehicle operating mode of the hybrid vehicle. The risk level determination module is used to determine the oil emulsification risk factor of the hybrid vehicle based on the vehicle operating parameters, and to determine the risk level corresponding to the oil emulsification risk factor. The oil emulsification inhibition response strategy determination module is used to determine the oil emulsification inhibition response strategy based on the vehicle operating mode and the vehicle risk level. The oil emulsification inhibition response strategy includes, but is not limited to, response strategies for controlling engine accessories, engine speed, engine load and vehicle heater. The engine accessories include, but are not limited to, electric water pump and piston cooling nozzle. The vehicle operating parameters include engine oil temperature at startup, engine oil temperature at shutdown, mileage, and average vehicle speed; the risk level determination module includes: The influencing factor determination unit is used to determine the oil temperature influencing factor based on the oil temperature of the hybrid vehicle when starting and when shutting down, the driving mileage influencing factor based on the single driving mileage of the hybrid vehicle, and the vehicle speed influencing factor based on the average vehicle speed of the hybrid vehicle. The risk factor determination unit is used to determine the oil emulsification risk factor of the hybrid vehicle based on the oil temperature influence factor, the mileage influence factor, the vehicle speed influence factor, and the number of driving cycles.

8. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the method for suppressing oil emulsification in hybrid vehicles according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the method for suppressing vehicle oil emulsification as described in any one of claims 1-6.

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