Hybrid vehicle fuel anti-oxidation and gumming method and vehicle

Abstract

The application provides a fuel anti-oxidation and anti-gel method and a vehicle, and relates to the technical field of fuel of a hybrid vehicle. The method comprises the following steps: acquiring current state information of a target hybrid vehicle in real time; the state information comprises an actual standing time of fuel, a remaining fuel amount in a fuel tank, an SOC value and an ambient temperature; calculating a standard standing time of fuel according to the remaining fuel amount in the fuel tank and the ambient temperature; if the actual standing time of fuel exceeds the standard standing time of fuel, and the remaining fuel amount in the fuel tank and the SOC value meet preset threshold conditions respectively, triggering an anti-gel strategy to consume fuel; the anti-gel strategy comprises controlling a generator or an engine to work at a preset output power. The technical problems of inaccurate protection and low consumption efficiency are solved by calculating the fuel standing threshold to ensure accurate protection time, cooperatively judging the fuel amount and the SOC value to ensure triggering safety, controlling the output of the engine and the generator, and consuming fuel.

Description

Technical Field

[0001] This application relates to the field of hybrid vehicle fuel technology, specifically to a method and vehicle for preventing fuel oxidation and gumming in hybrid vehicles. Background Technology

[0002] Hybrid electric vehicles (HEVs) combine the economy of pure electric drive with the range advantage of gasoline drive, and have become one of the mainstream technologies in the automotive market. These vehicles typically have multiple operating modes, including pure electric (EV) and hybrid (HEV). Users tend to prioritize pure electric mode for short daily commutes, which can lead to the fuel in the tank remaining stagnant for extended periods. Fuel (especially gasoline), as a complex mixture of hydrocarbons, is chemically unstable. Prolonged stagnant storage can cause it to oxidize with residual air in the tank, producing a viscous gum. This gum adheres to the surfaces of critical fuel system components (such as the fuel tank, fuel lines, and fuel injectors), forming a gum deposit. This can lead to a series of problems, including fuel injector blockage, increased engine carbon buildup, decreased combustion efficiency, and difficulty starting in cold weather, significantly increasing vehicle failure rates and maintenance costs. Currently, the industry has proposed several technical solutions for preventing fuel oxidation in hybrid vehicles. One approach involves monitoring the fuel's settling time; when this time reaches a preset threshold, the engine is started and idled for a certain period to achieve fuel recycling. However, this method has the following drawbacks: (1) Using a fixed fuel settling time threshold fails to consider the impact of key variables such as the amount of fuel remaining in the tank (affecting the gas-liquid contact area) and ambient temperature (directly affecting the fuel oxidation rate), resulting in rigid protection logic that cannot accurately adapt to different usage scenarios, which may lead to insufficient protection or excessive intervention. (2) The intervention strategy is singular, only using the engine idling speed, which fails to be combined with the actual driving conditions of the vehicle, resulting in low fuel consumption efficiency and may affect the driving smoothness and user experience of the vehicle. (3) It mainly focuses on the circulation of fuel in the fuel tank, but lacks effective protection against residual fuel in key parts such as fuel supply lines and fuel injectors, and there are blind spots in the protection range. Summary of the Invention

[0003] This application provides a method, system, device, and storage medium for preventing fuel oxidation and gumming in hybrid vehicles. It solves the technical problem that hybrid vehicles neglect the influence of the relevant quantities that lead to fuel oxidation and gumming, and use a single, unchanging fuel control logic, resulting in high risk of fuel oxidation and gumming, low fuel consumption efficiency, and impact on driving safety and cost.

[0004] In a first aspect, embodiments of this application provide a method for preventing fuel oxidation and gumming in hybrid vehicles, characterized in that it includes: Real-time acquisition of the target hybrid vehicle's current status information; status information includes actual fuel resting time, remaining fuel level in the tank, SOC value, and ambient temperature; Calculate the standard time for the fuel to stand based on the remaining fuel level in the tank and the ambient temperature. If the actual time the fuel has been sitting exceeds the standard time for fuel to sit, and the remaining fuel level in the tank and the SOC value meet the preset threshold conditions, the anti-galling strategy is triggered to consume fuel; the anti-galling strategy includes controlling the generator or engine to operate at a preset output power.

[0005] In conjunction with the first aspect, in one implementation, the standard time for fuel to stand is calculated based on the remaining fuel level in the tank and the ambient temperature, which includes the following steps: Preset oil quantity and temperature ranges; Determine the basic static threshold based on the fuel level range of the remaining fuel in the tank; determine the correction factor based on the ambient temperature range. The standard time for fuel to stand is obtained based on the basic resting threshold and the correction factor.

[0006] In conjunction with the first aspect, in one embodiment, the method further includes triggering a preset intervention strategy based on the actual fuel resting time and the standard fuel resting time, combined with the remaining fuel level in the tank and the SOC value. This strategy includes the following steps: If the actual fuel resting time is greater than or equal to the standard fuel resting time, and the remaining fuel in the fuel tank is greater than or equal to the first preset fuel quantity threshold, and the SOC value is greater than or equal to the first preset SOC value, then the anti-galling activation condition is met, and the target hybrid vehicle triggers the anti-galling strategy. If the actual time the fuel has been sitting is greater than or equal to the standard time for fuel to sit, and the remaining fuel in the tank is less than the first preset fuel level threshold, the driver will be reminded that the fuel is low. If the actual time the fuel has been sitting is greater than or equal to the standard time for fuel to sit, and the SOC value is less than the first preset SOC value, the owner will be reminded that the battery power is low.

[0007] In conjunction with the first aspect, in one embodiment, if the current vehicle speed is 0 when the anti-galling activation conditions are met, an anti-galling strategy for the idle state is triggered, which includes the following steps: After controlling the engine to run at the preset minimum idle speed for a first preset time, the actual fuel resting time is reset.

[0008] In conjunction with the first aspect, in one embodiment, under the condition that the anti-galling activation is met, if the current vehicle speed is greater than 0 and less than or equal to a first preset vehicle speed, then the anti-galling strategy in the low-speed driving state is triggered, which includes the following steps: Switch the target hybrid vehicle to hybrid mode, control the engine to output power according to the first preset power to meet the power needs of the vehicle's electrical appliances, and the power battery provides driving power. After a second preset time, switch to pure electric mode and reset the actual fuel resting time.

[0009] In conjunction with the first aspect, in one embodiment, if the current vehicle speed is greater than a first preset vehicle speed when the anti-galling activation conditions are met, an anti-galling strategy for high-speed driving is triggered, which includes the following steps: Switch the target hybrid vehicle to hybrid mode, control the engine to output power according to the second preset power, and use the excess power of the engine to charge the power battery. After a third preset time, switch to pure electric mode and reset the actual fuel resting time.

[0010] In conjunction with the first aspect, in one embodiment, if the current vehicle speed is greater than a second preset vehicle speed and the brake pedal is depressed, and the anti-galling strategy under regenerative braking is triggered, the strategy includes the following steps: If the actual fuel resting time is not less than the first preset fuel resting standard time and the braking energy recovery function is activated, then the generator is controlled to output power at the third preset power for a fourth preset time, and then the actual fuel resting time is reset.

[0011] In conjunction with the first aspect, in one implementation, a strategy for reducing driving perception is also included, which comprises the following steps: Record the cumulative duration for which the generator outputs power at the third preset level; When the accumulated time reaches the preset total time limit, the anti-gumming strategy corresponding to the regenerative braking condition will no longer be activated in the current driving cycle. If the anti-gumming strategy is activated for parking idling, low-speed driving, or high-speed driving conditions, the accumulated duration will be reset; however, the anti-gumming strategy for regenerative braking conditions will only be activated once within one driving cycle from unlocking to locking the vehicle.

[0012] In conjunction with the first aspect, in one implementation, if a preset abnormality is detected in the power system during the execution of the anti-galling strategy, the ongoing anti-galling strategy is immediately terminated, the original control logic of the vehicle is restored, and a fault prompt message is sent to the user.

[0013] Secondly, embodiments of this application provide a vehicle that applies the hybrid vehicle fuel anti-oxidation gumming method described in the first aspect.

[0014] The beneficial effects of the technical solutions provided in this application include: This paper proposes a method to prevent fuel oxidation and gumming in hybrid vehicles. It calculates a dynamic standard fuel resting time by real-time monitoring of remaining fuel level and ambient temperature, replacing a fixed time threshold. This method can sense and adapt to the actual chemical characteristics of low fuel levels, high gas content, rapid oxidation, and high-temperature accelerated oxidation, thus accurately determining the timing of protective intervention and solving the problem of inaccurate intervention timing. Secondly, it establishes a collaborative judgment based on resting time, remaining fuel level, and SOC (State of Charge). The fuel anti-gumming strategy is only triggered when the resting time reaches the threshold, the remaining fuel level is sufficient, and the battery charge is sufficient. This design ensures that the system intervenes only when the vehicle condition is safe and suitable, preventing false triggering and excessive consumption under low battery or low fuel levels, improving the system's safety and rationality. By adjusting the powertrain output, efficient fuel consumption and active circulation within the fuel system are achieved. This solves the technical problem of high fuel oxidation and gumming risk, low fuel consumption efficiency, and impact on driving safety and cost caused by hybrid vehicles neglecting the influence of factors leading to fuel oxidation and gumming and using a single, unchanging fuel control logic. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the process for preventing fuel oxidation and gumming in hybrid vehicles, provided in an embodiment of this application. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0017] To make the technical problem that this application aims to solve clearer, the causes of the technical problem will be analyzed in detail below: Existing technologies simplify the complex problem of fuel oxidation and gumming into a static, time-triggered task. The core logic is to execute a fixed action upon reaching a fixed time, reflecting an open-loop, pre-set design philosophy. This approach ignores the fact that fuel oxidation is a dynamic chemical process, its rate significantly influenced by the gas-liquid contact area within the fuel tank (determined by the fuel volume) and ambient temperature (which accelerates molecular motion). Treating a dynamic problem as static is the fundamental design reason for the low protection accuracy of this solution. In terms of control execution, existing solutions rely solely on the single dimension of fuel idle time for decision-making and employ only engine idling as the means of execution. This leads to the absence of two dimensions: First, the State of Charge (SOC), which characterizes the vehicle's operational safety boundary and energy state, and the remaining fuel quantity, which characterizes the basis for the effective operation of the fuel system, are not included in the triggering criteria. This allows the system to forcibly discharge and start when the battery charge is insufficient, or to operate ineffectively when the fuel level is too low, disrupting the vehicle's energy balance and potentially damaging components. This is the direct cause of problems affecting driving safety and low fuel consumption efficiency. Second, the use of only the idling condition fails to integrate with the diverse actual operating conditions of the vehicle. This results in a disconnect between protective actions and vehicle status, either wasting fuel when parked (idling) or failing to take action when protection is needed (such as while driving), failing to achieve an optimal balance between energy consumption and protection. Existing solutions limit protection to the circulation of fuel within the fuel tank, reflecting a localized and passive systems approach. They fail to consider the risk of gumming from the perspective of the entire fuel supply system (fuel tank, fuel lines, fuel rail, injectors), particularly neglecting the oxidation of residual fuel in high-pressure fuel lines that are not used for extended periods in pure electric mode. Furthermore, their anomaly handling mechanisms are weak, only stopping when the battery's state of charge (SOC) is low, failing to provide coordinated diagnosis and safe takeover for other power system failures (such as engine or generator malfunctions). This localized and passive design is the reason for the limited protection scope and inadequate anomaly handling.

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0019] Firstly, referring to Figure 1 , Figure 1 This is a schematic diagram of the process for preventing fuel oxidation and gumming in hybrid vehicles, provided in an embodiment of this application. Figure 1 As shown, a method for preventing fuel oxidation and gumming in hybrid vehicles includes: S100: Real-time acquisition of the target hybrid vehicle's current status information; status information includes actual fuel resting time, remaining fuel level in the tank, SOC value, and ambient temperature; S200. Calculate the standard time for fuel to stand based on the remaining fuel level in the tank and the ambient temperature. S300 If the actual time of fuel idling exceeds the standard time of fuel idling, and the remaining fuel level in the fuel tank and the SOC value meet the preset threshold conditions, the anti-galling strategy is triggered to consume fuel; the anti-galling strategy includes controlling the generator or engine to operate at a preset output power.

[0020] This method, by calculating the dynamic standard fuel resting time using real-time data on remaining fuel level and ambient temperature, replaces a fixed time threshold. It can sense and adapt to the actual chemical characteristics of low fuel levels, high gas content, rapid oxidation, and accelerated oxidation at high temperatures, thus accurately determining the timing of protective intervention and solving the problem of inaccurate intervention timing. Secondly, it establishes a coordinated judgment of resting time, remaining fuel level, and SOC (State of Charge). The fuel anti-galling strategy is only triggered when the resting time reaches the threshold, the remaining fuel level is sufficient, and the battery charge is adequate. This design ensures that the system intervenes only when the vehicle's condition is safe and suitable, preventing false triggering and excessive consumption under low battery or low fuel levels, improving the system's safety and rationality. It adjusts the powertrain output to achieve efficient fuel consumption and active circulation within the fuel system. This solves the technical problem of hybrid vehicles neglecting the impact of factors leading to fuel oxidation and gumming, using a single, unchanging fuel control logic, resulting in high risk of fuel oxidation and gumming, low fuel consumption efficiency, and impacts on driving safety and cost.

[0021] Furthermore, in one embodiment, the standard time for fuel to stand is calculated based on the remaining fuel level in the tank and the ambient temperature, which includes the following steps: Preset oil quantity and temperature ranges; Based on the fuel level range of the remaining fuel in the tank, a basic settling threshold is determined; based on the ambient temperature range, a correction factor is determined; and based on the basic settling threshold and the correction factor, the standard settling time for the fuel is obtained.

[0022] In this embodiment, multiple fuel quantity ranges are preset (e.g., less than 10 liters, 10 to 25 liters, 25 to 40 liters, more than 40 liters), and corresponding basic settling thresholds are set for each range (e.g., 14 days, 40 days, 65 days, 90 days) to quantify the impact of the gas-liquid ratio in the fuel tank on the oxidation rate under different fuel quantities. Simultaneously, multiple temperature ranges are preset (e.g., ≤-20℃, -20℃ to -10℃, >35℃, etc.), and corresponding correction coefficients are set for each range (e.g., 1.6, 1.4, 0.7, etc.) to quantify the accelerating or inhibiting effect of temperature on the oxidation reaction. During actual operation, the vehicle control unit (VCU) determines the fuel quantity range and obtains the corresponding basic settling threshold based on the real-time collected fuel tank remaining fuel quantity, and determines the temperature range and obtains the corresponding correction coefficient based on the collected ambient temperature. Finally, the two are multiplied to obtain the final applied, dynamic fuel settling standard time (t0). By combining fuel quantity segmentation benchmarks and temperature coefficient corrections, the safety threshold can be accurately matched to the actual usage pattern of fuel in real-world applications: low fuel content and high gas content lead to rapid oxidation, high temperatures accelerate oxidation, and low temperatures delay oxidation. This overcomes the problem of rigid protection timing caused by the use of fixed static thresholds in existing solutions. It achieves timely protection under low fuel quantity and high temperature conditions, and avoids unnecessary engine starting under high fuel quantity and low temperature conditions, thus improving the accuracy of fuel gumming protection and the overall vehicle fuel economy.

[0023] Furthermore, in one embodiment, the method further includes triggering a preset intervention strategy based on the actual fuel resting time and the standard fuel resting time, combined with the remaining fuel level in the tank and the SOC value. This strategy includes the following steps: If the actual fuel resting time is greater than or equal to the standard fuel resting time, and the remaining fuel in the fuel tank is greater than or equal to the first preset fuel quantity threshold, and the SOC value is greater than or equal to the first preset SOC value, then the anti-galling activation condition is met, and the target hybrid vehicle triggers the anti-galling strategy. If the actual time the fuel has been sitting is greater than or equal to the standard time for fuel to sit, and the remaining fuel in the tank is less than the first preset fuel level threshold, the driver will be reminded that the fuel is low. If the actual time the fuel has been sitting is greater than or equal to the standard time for fuel to sit, and the SOC value is less than the first preset SOC value, the owner will be reminded that the battery power is low.

[0024] In this embodiment, the VCU continuously compares the real-time monitored actual fuel resting time with the dynamically calculated standard fuel resting time, and collaboratively determines the remaining fuel level in the tank and the state of charge (SOC) of the power battery, executing different strategies: only when the resting time reaches or exceeds the standard value, and the fuel level is sufficient (not lower than the first preset fuel level threshold, such as 5L), and the battery charge is sufficient (not lower than the first preset SOC value, such as 10%), is the core anti-galling strategy triggered, and the engine is started to consume fuel; if the resting time has exceeded the standard, but either the fuel level or the battery charge is not met, the system does not consume fuel, but only issues a corresponding prompt to the user (such as "low fuel" or "low battery charge"). This ensures that protective intervention is only performed when absolutely necessary and the vehicle's condition fully supports it, thereby avoiding the risk of damaging the fuel pump at low fuel levels, affecting the safety of the high-voltage system at low battery levels, or causing the vehicle to run out of power. While achieving the fundamental purpose of fuel protection, it also prioritizes the vehicle's operational safety and component lifespan.

[0025] Furthermore, in one embodiment, if the current vehicle speed is 0, and the anti-galling activation conditions are met, an anti-galling strategy for the idle state is triggered, which includes the following steps: After controlling the engine to run at the preset minimum idle speed for a first preset time, the actual fuel resting time is reset.

[0026] In this embodiment, for the idling condition, the engine is controlled to run at a preset minimum idle speed (such as the normal minimum idle speed) for a first preset duration (e.g., 8 minutes). The purpose of setting a minimum idle speed here is to control fuel consumption and noise vibration to an absolute minimum level, while ensuring that the fuel pump can establish normal fuel pressure to achieve fuel system circulation, so as to complete the fuel replenishment in the fuel tank in a near-zero disturbance manner.

[0027] Furthermore, in one embodiment, under the condition of meeting the anti-galling activation requirements, if the current vehicle speed is greater than 0 and less than or equal to a first preset vehicle speed, then the anti-galling strategy in the low-speed driving state is triggered, which includes the following steps: In this embodiment, for low-speed driving conditions, the system automatically switches to hybrid mode and controls the engine to output power at a first preset power (e.g., a low power of 3-7kW) for a second preset duration (e.g., 10 minutes). The core purpose of this power setting is to only meet the low-voltage electrical needs of the vehicle, while the power required for vehicle operation is entirely provided by the power battery. This strategy of using the engine for auxiliary power supply and the battery for primary drive maximizes the smoothness and quietness of pure electric driving while consuming fuel; the first preset speed is generally set to 40km / h.

[0028] Furthermore, in one embodiment, if the current vehicle speed is greater than a first preset vehicle speed, and the anti-adhesion strategy under high-speed driving conditions is triggered, the strategy includes the following steps: Switch the target hybrid vehicle to hybrid mode, control the engine to output power according to the second preset power, and use the excess power of the engine to charge the power battery. After a third preset time, switch to pure electric mode and reset the actual fuel resting time.

[0029] In this embodiment, for high-speed driving conditions, the system is also switched to hybrid mode, but the engine is controlled to run at the second preset power for a third preset duration (e.g., 15 minutes) and to operate within a preset high-efficiency speed range (e.g., 1500-2500 r / min). The power and speed settings here are intended to allow the engine to operate in the load range with the highest fuel efficiency, so that it can undertake the main driving task, thereby achieving the highest work efficiency while consuming fuel, and converting excess energy into electrical energy to recharge the battery. This achieves the synergy between the protection process and energy recovery, improving the overall energy efficiency. Therefore, the second preset power is tested and set according to the actual needs of the vehicle.

[0030] Furthermore, in one embodiment, under the condition of meeting the anti-gumming activation requirements, if the current vehicle speed is greater than a second preset vehicle speed and the brake pedal is depressed, the anti-gumming strategy under the brake regeneration state is triggered, which includes the following steps: If the actual fuel resting time is not less than the first preset fuel resting standard time and the braking energy recovery function is activated, then the generator is controlled to output power at the third preset power for a fourth preset time, and then the actual fuel resting time is reset.

[0031] In this embodiment, the second preset vehicle speed is greater than the first preset vehicle speed, which is generally 60 km / h. For regenerative braking, under the specific conditions of pure electric mode, more than half the resting time (t≥t0 / 2), and regenerative braking activation, the generator is controlled to output power at the third preset level for a fourth preset duration (generally 7 seconds), slightly dragging the engine to a lower speed (e.g., 500-600 r / min) for a brief period. The power and speed settings here are designed to provide just enough torque to drive the engine crankshaft and associated fuel pump without allowing engine fuel injection ignition to participate in the drive. This specifically drives the fuel to flow in the fuel lines, fuel rail, and injectors, solving the problem of residual fuel forming in the lines, and has almost no impact on braking safety and driving experience. Therefore, the third preset power is tested and set according to the actual needs of the vehicle. By customizing differentiated power and speed control targets for different operating conditions, a leap from simple idling to scenario-based intelligent intervention is achieved. It ensures that every drop of fuel consumed serves a clear and efficient purpose: circulating at minimal cost when stationary, integrating into power flow and optimizing energy efficiency while driving, and precisely clearing residual fuel from the lines during braking. Thus, it eliminates the risk of fuel gumming while maximizing both fuel economy and energy efficiency.

[0032] Furthermore, in one embodiment, a strategy for reducing driving perception is also included, which comprises the following steps: Record the cumulative duration for which the generator outputs power at the third preset level; When the accumulated time reaches the preset total time limit, the anti-gumming strategy corresponding to the regenerative braking condition will no longer be activated in the current driving cycle. If the anti-gumming strategy is activated for parking idling, low-speed driving, or high-speed driving conditions, the accumulated duration will be reset; however, the anti-gumming strategy for regenerative braking conditions will only be activated once within one driving cycle from unlocking to locking the vehicle.

[0033] In this embodiment, the anti-galling strategy corresponding to the regenerative braking condition is activated only once within a driving cycle (from vehicle unlocking to locking), thereby preventing abnormal dragging or power flow switching that may be perceptible to the user due to frequent triggering. Simultaneously, the system records the cumulative duration of generator drag during each execution of this strategy and sets a preset total duration limit (e.g., 14 seconds). Once the cumulative duration reaches this limit, the strategy will not be activated again within the current driving cycle, thus preventing excessively long single or cumulative intervention times. Furthermore, once the anti-galling strategy for other conditions such as idling, low-speed driving, or high-speed driving is detected as activated (meaning that a more significant fuel update has been completed directly through engine operation), the aforementioned cumulative duration is immediately reset to zero. While ensuring the targeted cleaning of residual fuel in the fuel supply line—a specific protective objective—the system minimizes the perceptible impact on driving smoothness, brake feel, and overall vehicle quietness through single-cycle single-trigger, total duration limit control, and main strategy activation reset. This allows the entire anti-oxidation and gumming system to work efficiently without being noticeable to the user, thus safeguarding the driving experience of hybrid vehicles, especially in pure electric mode.

[0034] Furthermore, in one embodiment, if a preset abnormality is detected in the power system during the execution of the anti-gum-caking strategy, the currently executing anti-gum-caking strategy is immediately terminated, the original control logic of the vehicle is restored, and a fault prompt message is sent to the user.

[0035] In this embodiment, when the VCU controls the engine or generator to execute the fuel renewal strategy, it monitors the status of the powertrain in real time. Once a preset serious anomaly is detected (e.g., the engine reports a level 4 or 5 fault, engine starts fail, or the generator reports a level 4 or 5 fault), the ongoing fuel anti-galling control process is immediately interrupted, the vehicle's original driving mode and power distribution logic are unconditionally restored, and a clear text fault message (such as "Powertrain Fault") is simultaneously sent to the driver via the vehicle's instrument panel. An active safety redundancy and fault-breaking mechanism are introduced to ensure that the fuel anti-galling function strictly adheres to higher vehicle operation safety principles under all circumstances. When the powertrain itself malfunctions, this mechanism can instantly halt non-core protective actions to prevent the fault from escalating or causing secondary damage due to forced operation. Simultaneously, by promptly restoring the original vehicle logic and informing the user, the vehicle operates in a controllable and safe state.

[0036] Secondly, embodiments of this application also provide a vehicle that applies a method for preventing fuel oxidation and gumming in hybrid vehicles.

[0037] It should be noted that the sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0038] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus. The terms "first," "second," and "third," etc., are used to distinguish different objects, etc., and do not indicate a sequence, nor do they limit "first," "second," and "third" to different types.

[0039] In the description of the embodiments of this application, terms such as "exemplary," "for example," or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplary," "for example," or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary," "for example," or "for instance" is intended to present the relevant concepts in a concrete manner.

[0040] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0041] In some processes described in the embodiments of this application, multiple operations or steps are included in a specific order. However, it should be understood that these operations or steps may not be executed in the order they appear in the embodiments of this application, or they may be executed in parallel. The sequence number of the operation is only used to distinguish different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed sequentially or in parallel, and these operations or steps may be combined.

[0042] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device to execute the methods described in the various embodiments of this application.

[0043] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A method for preventing fuel oxidation and gumming in hybrid vehicles, characterized in that, It includes: The system acquires the current status information of the target hybrid vehicle in real time; the status information includes the actual time the fuel has been sitting, the remaining fuel level in the fuel tank, the SOC value, and the ambient temperature. Calculate the standard time for the fuel to stand based on the remaining fuel level in the tank and the ambient temperature. If the actual time the fuel is left to stand exceeds the standard time for fuel to stand, and the remaining fuel level in the tank and the SOC value respectively meet preset threshold conditions, an anti-galling strategy is triggered to consume fuel; the anti-galling strategy includes controlling the generator or engine to operate at a preset output power.

2. The method for preventing fuel oxidation and gumming in hybrid vehicles as described in claim 1, characterized in that, Calculating the standard time for fuel to stand based on the remaining fuel level in the tank and the ambient temperature includes the following steps: Preset oil quantity and temperature ranges; A basic static threshold is determined based on the oil volume range to which the remaining oil in the tank belongs; a correction coefficient is determined based on the temperature range to which the ambient temperature belongs. The standard fuel resting time is obtained based on the basic resting threshold and the correction coefficient.

3. The method for preventing fuel oxidation and gumming in hybrid vehicles as described in claim 1, characterized in that, It also includes triggering a preset intervention strategy based on the actual fuel settling time and the standard fuel settling time, combined with the remaining fuel level in the tank and the SOC value, which includes the following steps: If the actual fuel resting time is greater than or equal to the standard fuel resting time, and the remaining fuel in the fuel tank is greater than or equal to the first preset fuel level threshold, and the SOC value is greater than or equal to the first preset SOC value, then the anti-galling activation condition is met, and the target hybrid vehicle triggers the anti-galling strategy. If the actual time the fuel has been sitting is greater than or equal to the standard time the fuel has been sitting, and the remaining fuel in the tank is less than the first preset fuel level threshold, then the driver will be reminded that the fuel is low. If the actual fuel resting time is greater than or equal to the standard fuel resting time, and the SOC value is less than the first preset SOC value, the owner will be reminded that the battery power is low.

4. The method for preventing fuel oxidation and gumming in hybrid vehicles as described in claim 3, characterized in that, If the anti-caking activation conditions are met, and the current vehicle speed is 0, then the anti-caking strategy in the idle state is triggered, which includes the following steps: After controlling the engine to run at a preset minimum idle speed for a first preset time, the actual fuel resting time is reset.

5. The method for preventing fuel oxidation and gumming in hybrid vehicles as described in claim 4, characterized in that, If the anti-adhesion activation conditions are met, and the current vehicle speed is greater than 0 and less than or equal to a first preset vehicle speed, then the anti-adhesion strategy in the low-speed driving state is triggered, which includes the following steps: The target hybrid vehicle is switched to hybrid mode, the engine is controlled to output power according to the first preset power to meet the power consumption of the vehicle's electrical appliances, and the power battery provides driving power. After a second preset time, the vehicle is switched to pure electric mode and the actual fuel resting time is reset.

6. The method for preventing fuel oxidation and gumming in hybrid vehicles as described in claim 5, characterized in that, If the current vehicle speed is greater than the first preset vehicle speed, and the anti-adhesion strategy under high-speed driving conditions is triggered, the strategy includes the following steps: The target hybrid vehicle is switched to hybrid mode, the engine is controlled to output power according to the second preset power, and the excess power of the engine is used to charge the power battery. After a third preset time, the vehicle is switched to pure electric mode and the actual time of fuel idling is reset.

7. The method for preventing fuel oxidation and gumming in hybrid vehicles as described in claim 6, characterized in that, If, under the aforementioned anti-galling activation conditions, the current vehicle speed is greater than a second preset vehicle speed and the brake pedal is depressed, then the anti-galling strategy under regenerative braking state is triggered, which includes the following steps: If the actual fuel resting time is not less than the first preset fuel resting standard time and the braking energy recovery function is activated, then the generator is controlled to output power at the third preset power for a fourth preset time, and then the actual fuel resting time is reset.

8. The method for preventing fuel oxidation and gumming in hybrid vehicles as described in claim 7, characterized in that, It also includes strategies to reduce driving perception, which include the following steps: Record the cumulative duration for which the generator outputs power at the third preset power. When the accumulated duration reaches the preset total duration limit, the anti-gumming strategy corresponding to the regenerative braking condition will no longer be activated within the current driving cycle. If the anti-gumming strategy corresponding to the parking idling, low-speed driving, or high-speed driving conditions is detected to be activated, the accumulated duration is reset; wherein, within one driving cycle from unlocking to locking the vehicle, the anti-gumming strategy corresponding to the regenerative braking condition is activated only once.

9. The method for preventing fuel oxidation and gumming in hybrid vehicles as described in claim 7, characterized in that, If a preset abnormality is detected in the power system during the execution of the anti-gum-caking strategy, the anti-gum-caking strategy being executed will be terminated immediately, the original control logic of the vehicle will be restored, and a fault prompt message will be sent to the user.

10. A vehicle, characterized in that, The vehicle uses the hybrid vehicle fuel anti-oxidation gumming method as described in any one of claims 1-9.

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