Drainage control method of fuel oil filtering device and fuel oil filtering device

Abstract

The invention discloses a drainage control method of a fuel oil filtering device and the fuel oil filtering device. The method comprises the steps that working condition information and water level information of a target vehicle and environment information of the environment where the target vehicle is located are obtained, and the water level information comprises the liquid level height in a water collecting piece of a fuel oil filtering device; and generating a target control instruction set based on at least one of the working condition information, the water level information and the environment information, wherein the target control instruction set is used for controlling a drainage liquid level threshold value of the fuel oil filtering device, a drainage action of a drainage valve of the fuel oil filtering device and operation parameters of the engine. The technical problem that an existing drainage control method is insufficient in intelligence is solved.

Description

Technical Field

[0001] The present invention relates to the field of drain control of filters, and more particularly, to a drain control method for a fuel filtering device and a fuel filtering device. Background Art

[0002] In the prior art, fuel filtering devices such as fuel filters usually adopt manual drainage. When the water separated in the fuel filtering device accumulates to a certain level, the driver manually opens the valve. In the prior art, there are also solutions for automatically opening the drain valve. However, the above solutions are only controlled by detecting the liquid level height of the fuel filtering device, and there are problems such as low control accuracy and insufficient intelligence caused by the inability to respond to the vehicle working conditions and the environment where the vehicle is located.

[0003] In view of the above problems, no effective solution has been proposed yet. Summary of the Invention

[0004] Embodiments of the present invention provide a drain control method for a fuel filtering device and a fuel filtering device, so as to at least solve the technical problem of insufficient intelligence in the existing drain control method.

[0005] According to one aspect of the embodiments of the present invention, a drain control method for a fuel filtering device is provided. The drain control method includes: obtaining the working condition information, water level information of a target vehicle, and environmental information of the environment where the target vehicle is located, where the water level information includes the liquid level height in the water collecting member of the fuel filtering device; generating a target control instruction set based on at least one of the working condition information, water level information, and environmental information, where the target control instruction set is used to control the drain liquid level threshold of the fuel filtering device, the drain action of the drain valve of the fuel filtering device, and the operating parameters of the engine.

[0006] Further, generating a target control instruction set based on at least one of the working condition information, water level information, and environmental information includes: determining the engine start-stop frequency and the engine continuous working duration based on the working condition information; in response to the engine start-stop frequency within a preset time period being greater than a frequency threshold or the engine continuous working duration being greater than a duration threshold, generating a first target control instruction in the target control instruction set, where the first target control instruction is used to increase the drain liquid level threshold.

[0007] Further, generating a target control instruction set based on at least one of the working condition information, water level information, and environmental information further includes: in response to the engine continuous working duration being greater than the duration threshold, determining whether the liquid level height is greater than the adjusted drain liquid level threshold; if so, generating a second target control instruction in the target control instruction set, where the second target control instruction is used to control the drain valve to work in an intermittent drainage mode within a target time period until the liquid level height is less than the adjusted drain liquid level threshold, where the target time period is the time period when the engine is in a low load working condition during the engine continuous working duration.

[0008] Further, generating a target control instruction set based on at least one of the operating condition information, water level information, and environmental information further includes: determining the temperature of the environment where the target vehicle is located based on the environmental information; in response to the temperature being less than a low temperature threshold or greater than a high temperature threshold, generating a third target control instruction in the target control instruction set, where the third target control instruction is used to lower the drainage liquid level threshold.

[0009] Further, before determining whether the temperature is less than the low temperature threshold or greater than the high temperature threshold, generating a target control instruction set based on at least one of the operating condition information, water level information, and environmental information further includes: determining whether the temperature is below the freezing point value; if so, generating a fourth target control instruction in the target control instruction set, where the fourth target control instruction is used to control the drainage valve to enter a prohibited opening state.

[0010] Further, the environmental information includes road information. Generating a target control instruction set based on at least one of the operating condition information, water level information, and environmental information further includes: determining the road type based on the road information, where the road type includes at least one of the following: a turning section, a bumpy section, and a climbing section; in response to the road type of the road where the target vehicle is located including at least one of a turning section, a bumpy section, and a climbing section, generating a fourth target control instruction.

[0011] Further, generating a target control instruction set based on at least one of the operating condition information, water level information, and environmental information further includes: obtaining drainage system information, where the drainage system information includes the working state of the drainage system; in response to the working state of the drainage system being a fault state and the liquid level height being greater than the drainage liquid level threshold, generating a fifth target control instruction in the target control instruction set, where the fifth target control instruction is used to feedback-adjust the operating parameters and operating mode of the engine based on the liquid level height.

[0012] Further, generating a target control instruction set based on at least one of the operating condition information, water level information, and environmental information further includes: determining the vehicle speed based on the operating condition information; in response to the vehicle speed being in an accelerating state and the drainage valve being in an open state, generating a sixth target control instruction in the target control instruction set, where the sixth target control instruction is used to limit the response amplitude of the vehicle's accelerator pedal and / or limit the engine speed.

[0013] Further, generating a target control instruction set based on at least one of the operating condition information, water level information, and environmental information further includes: during the driving of the target vehicle, determining the gear shifting amplitude of the target vehicle based on the operating condition information; determining the engine speed of the target vehicle based on the operating condition information; determining the liquid level height difference based on the liquid level height and the drainage liquid level threshold; generating a seventh target control instruction in the target control instruction set based on at least one of the gear shifting amplitude, engine speed, and liquid level height difference, where the seventh target control instruction is used to adjust the opening timing and opening duration of the drainage valve.

[0014] According to another aspect of the embodiments of the present invention, there is also provided a fuel filtering device, and the fuel filtering device is controlled based on the drainage control method of the fuel filtering device, and the drainage control method of the fuel filtering device is the drainage control method of the fuel filtering device above.

[0015] In the embodiments of the present invention, by adopting the method of obtaining the operating condition information, water level information, and environmental information of the target vehicle, through individual or combined control based on the above information, the purpose of making the drainage control method more in line with the requirements of the vehicle under specific operating conditions and specific environments is achieved. The drainage timing is accurately judged according to the preset logical rules, and the special requirements in different scenarios are considered at the same time to ensure the efficiency, safety, and reliability of the drainage operation, thereby achieving the technical effect of making the drainage control method more intelligent and improving the control accuracy, and further solving the technical problem of insufficient intelligence of the existing drainage control method. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0017] Figure 1 is a schematic diagram of a drainage control method for an optional fuel filtering device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of the present invention are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present invention described here can be implemented in an order different from those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0020] According to an embodiment of the present invention, there is provided a method embodiment of a drainage control method for a fuel filtering device. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. And although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that here.

[0021] Figure 1 is a method according to an embodiment of the present invention, as Figure 1 shown, the method includes the following steps:

[0022] Step S102, obtain the working condition information, water level information of the target vehicle, and environmental information of the environment where the target vehicle is located. The water level information includes the liquid level height in the water collecting member of the fuel filtering device;

[0023] Step S102, generate a target control instruction set based on at least one of the working condition information, water level information, and environmental information. The target control instruction set is used to control the drainage liquid level threshold of the fuel filtering device, the drainage action of the drainage valve of the fuel filtering device, and the operating parameters of the engine.

[0024] In the embodiment of the present invention, by adopting the method of obtaining the working condition information, water level information, and environmental information of the target vehicle, and through individual or combined control based on the above information, the purpose of making the drainage control method more in line with the requirements of the vehicle under specific working conditions and specific environments is achieved. Thus, the technical effects of making the drainage control method more intelligent and improving the control accuracy are realized, and furthermore, the technical problem of insufficient intelligence of the existing drainage control method is solved.

[0025] In the application, there is also provided a drainage control system for a fuel filtering device. The system composition includes:

[0026] 1. Sensor module. Liquid level sensor: Installed in the water collection box of the fuel filter to monitor the liquid level height in the water collection box in real time. Engine sensor: Collects operating condition data such as the engine speed and operating status (start / stop). Ambient temperature sensor: Installed outside the vehicle to obtain the temperature of the environment where the vehicle is located.

[0027] 2. Intelligent control unit (ECU): Receives the data transmitted by the sensor module, analyzes and processes it, and issues a drainage control instruction according to the preset logic rules.

[0028] 3. Drainage actuator: Includes a drain solenoid valve, which opens or closes according to the instruction of the intelligent control unit to achieve the drainage operation.

[0029] 4. Heating device (optional): When the ambient temperature is too low, heats the fuel filter to prevent water from freezing and affecting drainage.

[0030] Further, in step S102, generating a target control instruction set based on at least one of the operating condition information, water level information, and environmental information includes:

[0031] Determining the engine start / stop frequency and the engine continuous operation duration based on the operating condition information;

[0032] In response to the engine start / stop frequency within a preset time period being greater than the frequency threshold or the engine continuous operation duration being greater than the duration threshold, generating a first target control instruction in the target control instruction set, and the first target control instruction is used to increase the drainage liquid level threshold.

[0033] The drainage judgment under normal operating conditions is: When the liquid level sensor detects that the liquid level height in the water collection box reaches the preset high liquid level threshold, start the drainage judgment process. If the engine starts and stops frequently within a short period of time (such as more than 5 times within 1 hour), appropriately increase the liquid level threshold for drainage to reduce unnecessary drainage operations and avoid affecting the normal operation of the vehicle.

[0034] When the engine continuously operates for more than a certain period of time, increase the liquid level height for drainage trigger. Only when the liquid level in the fuel filter water collection box far exceeds the normal threshold and reaches a level that seriously affects the fuel system, consider drainage. During driving, it can be increased significantly to avoid frequent drainage affecting the vehicle operation. If drainage is required, the engine needs to be in a relatively stable low-load operating condition and last for a certain period of time (such as 5-10 minutes) to ensure that the normal fuel supply of the engine will not be disturbed during drainage. The impact on the fuel system during drainage under low-load conditions is relatively small.

[0035] Further, in step S102, generating a target control instruction set based on at least one of the operating condition information, water level information, and environmental information further includes:

[0036] In response to the engine's continuous operation duration being greater than the duration threshold, determine whether the liquid level height is greater than the adjusted drainage liquid level threshold;

[0037] If so, generate a second target control instruction in the target control instruction set. The second target control instruction is used to control the drainage valve to work in an intermittent drainage mode within the target time period until the liquid level height is less than the adjusted drainage liquid level threshold, where the target time period is the time period during which the engine is in a low-load working condition during the engine's continuous operation duration.

[0038] When the engine is continuously operating, if the liquid level height is greater than the adjusted drainage liquid level threshold, adopt intermittent drainage. Each drainage time is extremely short (such as 0.5 - 1 second), and drainage is carried out again after a certain interval (such as 3 - 5 minutes). This method can reduce the instantaneous impact of drainage on the pressure and flow of the fuel system, ensuring smooth vehicle driving. By adjusting the opening degree of the drainage solenoid valve, precisely control the drainage speed to make it drain slowly. Ensure that the pressure fluctuation of the fuel system during drainage is within an acceptable range to prevent the engine performance from being affected by sudden pressure changes.

[0039] Furthermore, in step S102, generating the target control instruction set based on at least one of the working condition information, water level information, and environmental information further includes:

[0040] Step S1021, determine the temperature of the environment where the target vehicle is located based on the environmental information;

[0041] Step S1022, in response to the temperature being less than the low-temperature threshold or the temperature being greater than the high-temperature threshold, generate a third target control instruction in the target control instruction set. The third target control instruction is used to lower the drainage liquid level threshold.

[0042] For example, when the vehicle parks for a long time in a low-temperature environment (such as more than 24 hours), lower the drainage liquid level threshold so that the vehicle performs a drainage operation before starting to prevent the water in the water collection box from freezing and damaging the filter;

[0043] For example, when the vehicle is in a high-temperature environment (such as the ambient temperature exceeds 35°C), after the vehicle runs continuously for a period of time (such as more than 1 hour), lower the drainage liquid level threshold so that the vehicle performs a drainage operation to prevent the steam generated by water evaporation from damaging the fuel system.

[0044] Furthermore, in step S102, before determining whether the temperature is less than the low-temperature threshold or whether the temperature is greater than the high-temperature threshold, generating the target control instruction set based on at least one of the working condition information, water level information, and environmental information further includes:

[0045] Judge whether the temperature is lower than the freezing point value;

[0046] If so, generate a fourth target control instruction in the target control instruction set, where the fourth target control instruction is used to control the drain valve to enter a prohibited opening state.

[0047] Check the temperature data transmitted by the ambient temperature sensor. If the ambient temperature is higher than the freezing point (such as 5°C), drainage operation is allowed; if the ambient temperature is lower than the freezing point, start the heating device to heat the fuel filter until the temperature rises to the range where drainage is allowed.

[0048] Further, in step S102, the environmental information includes road information, and generating the target control instruction set based on at least one of the working condition information, water level information, and environmental information further includes:

[0049] Determine the road type based on the road information, where the road type includes at least one of the following: turning section, bumpy section, uphill section;

[0050] When the road type of the road where the target vehicle is located includes at least one of a turning section, a bumpy section, and an uphill section, generate a fourth target control instruction.

[0051] Further, in step S102, generating the target control instruction set based on at least one of the working condition information, water level information, and environmental information further includes:

[0052] Obtain the drainage system information, where the drainage system information includes the working state of the drainage system;

[0053] When the working state of the drainage system is a fault state and the liquid level height is greater than the drainage liquid level threshold, generate a fifth target control instruction in the target control instruction set, where the fifth target control instruction is used to feedback-adjust the operating parameters and operating mode of the engine based on the liquid level height.

[0054] This control method includes real-time monitoring of the working state of the sensors. If it is found that a certain sensor fails (such as abnormal data, signal loss, etc.), an alarm signal is issued and processed according to the preset emergency strategy. For example, if the liquid level sensor fails, drainage operation is temporarily performed at a fixed time interval until the sensor is repaired.

[0055] If the drainage system fails and normal drainage cannot be performed, and the liquid level continues to rise to a dangerous height, the vehicle can automatically adjust the engine operating parameters and reduce the engine power to reduce fuel consumption and the generated moisture, and maintain the safe driving of the vehicle to the repair location. The operating parameters include speed, and the operating mode includes the idle mode.

[0056] Further, in step S102, generating the target control instruction set based on at least one of the working condition information, water level information, and environmental information further includes:

[0057] Determine the vehicle speed based on the operating conditions information;

[0058] In response to the vehicle speed being in an accelerating state and the drain valve being in an open state, generate the sixth target control instruction in the target control instruction set. The sixth target control instruction is used to limit the response amplitude of the vehicle's accelerator pedal and / or limit the engine speed.

[0059] During the acceleration process, when the vehicle is accelerating, the engine's demand for fuel and fuel flow increase. At this time, draining water may interfere with the stability of fuel supply and affect the acceleration performance. The liquid level threshold for draining water can be appropriately increased to suspend draining water as much as possible. Normally, draining water is triggered when the liquid level reaches a certain height. During acceleration, this liquid level threshold is increased by 1.5 - 2 times. This means that draining water is only considered when there is a large amount of accumulated water that seriously affects the performance of the fuel filter, to avoid starting to drain water during acceleration due to a small amount of accumulated water. If draining water must be carried out during the acceleration process and the drainage conditions are met, ensure the safety and reliability of the drainage process. On the one hand, strengthen the pressure monitoring of the drainage system to ensure the stability of the fuel system pressure during drainage and prevent the sudden change in pressure caused by drainage from affecting the normal operation of the engine. On the other hand, the drainage operation should be linked with the vehicle's safety system. For example, when draining water, limit the response amplitude of the vehicle's accelerator pedal or limit the engine speed to avoid the sudden increase in engine load caused by the driver's misoperation, which affects the drainage safety and vehicle driving stability.

[0060] During the vehicle acceleration process, if the drainage operation is not carried out for various reasons, the system should record relevant data, including the liquid level height, acceleration duration, engine operating conditions, etc. After the acceleration ends, based on these recorded data, feedback adjustment is made to the drainage logic. If the vehicle fails to drain water due to liquid level problems during acceleration multiple times, the drainage liquid level threshold can be appropriately optimized or the drainage timing can be adjusted to better adapt to the drainage requirements under different driving states of the vehicle.

[0061] Further, in step S102, generating the target control instruction set based on at least one of the operating conditions information, water level information, and environmental information further includes:

[0062] During the driving process of the target vehicle, determine the gear change amplitude of the target vehicle based on the operating conditions information;

[0063] Determine the engine speed of the target vehicle based on the operating conditions information;

[0064] Determine the liquid level height difference based on the liquid level height and the drainage liquid level threshold;

[0065] Generate the seventh target control instruction in the target control instruction set based on at least one of the gear change amplitude, speed, and liquid level height difference. The seventh target control instruction is used to adjust the opening timing and opening duration of the drain valve.

[0066] Generate the seventh target control instruction in the target control instruction set based on at least one of the variable speed range, rotational speed, and liquid level height difference, including generating the seventh target control instruction in the target control instruction set based on at least one of the variable speed range and rotational speed. For filters with different structures, there are different liquid level detection methods. Generally, a liquid level sensor is arranged. When the liquid level rises to the arrangement position of the liquid level sensor, the liquid level sensor will generate a signal. There can be two liquid level sensors, and the two liquid level sensors correspond to different liquid level heights. In this structure, since the liquid level detection is a break point value, the combined control based on the liquid level height difference is relatively rough, so it is not applicable. Additionally, other sensing detection settings can be used (such as arranging an infrared sensor or an acoustic wave sensor and calculating the liquid level height based on the time required for the medium to measure the liquid level), to achieve stepless detection of the liquid level height. At this time, the combined control combined with the liquid level height difference has the technical effect of high-precision control.

[0067] Deceleration process. When continuously decelerating, the engine's demand for fuel is relatively stable and decreases. At this time, the impact of drainage on the fuel system is small. If the liquid level reaches or exceeds the normal drainage liquid level threshold and the vehicle is in a continuous deceleration state (such as the deceleration time exceeds 5 seconds), drainage can be started. When the vehicle is in a smooth deceleration process and meets the drainage liquid level condition, select the stage with a lower engine load for drainage. When the engine load is low, the fuel system is relatively stable, and drainage is not likely to cause abnormal fuel supply. For example, start the drainage operation during the period when the vehicle switches from a high gear to a low gear and the engine speed drops and the load decreases. During the critical deceleration stage when the vehicle is about to stop or requires precise vehicle speed control, such as entering a curve or an intersection, even if the liquid level meets the drainage condition, the drainage operation is not carried out temporarily. This is to ensure that the vehicle's handling performance is not affected by drainage and to guarantee driving safety. After the vehicle completes the critical deceleration operation and enters a relatively stable low-speed driving or stopped state, then perform the drainage operation.

[0068] When draining water during the vehicle deceleration process, adjust the drainage speed according to the deceleration amplitude. If the deceleration amplitude is small, the drainage speed can be appropriately increased to complete the drainage in a shorter time and improve the drainage efficiency. On the contrary, if the deceleration amplitude is large, to prevent excessive pressure fluctuations in the fuel system, the drainage speed should be reduced and a slow drainage method should be adopted. For example, when the vehicle deceleration amplitude is between 10 - 20 km / h, the drainage speed can be controlled at 80% of the normal speed; when the deceleration amplitude exceeds 20 km / h, the drainage speed is reduced to 50% of the normal speed.

[0069] Adjust the drainage speed in combination with the liquid level height: In addition to considering the deceleration amplitude, it is also necessary to adjust the drainage speed in combination with the liquid level height in the water collection box of the fuel filter. When the liquid level is relatively high, drain the water at a lower speed first to avoid sudden changes in the fuel system pressure due to too fast drainage. As the liquid level drops, gradually increase the drainage speed to ensure that the drainage operation is completed before the vehicle stops or enters a stable state.

[0070] The engine speed and load change with the vehicle deceleration. When the speed is high and the load is large, the drainage speed should be slow to prevent interference with the fuel supply. For example, when the engine speed exceeds 3000 revolutions per minute, the drainage speed is 0.6 times the normal speed. When the speed is low and the load is small, the impact of drainage on the fuel system is small, and the speed can be appropriately increased. For example, when the speed is lower than 1500 revolutions per minute, the drainage speed can be increased to 1.2 times the normal speed.

[0071] Adopting the technical solution of the present application, comprehensively considering the data in three dimensions of vehicle working conditions, external environment and liquid level height, it avoids the limitations of single data judgment, can more accurately judge the drainage timing, and improves the drainage efficiency. For different vehicle working conditions and external environments, corresponding drainage strategies are formulated to ensure safe and reliable drainage operations in various situations. It has a perfect fault diagnosis and safety protection mechanism, can detect and handle system faults in time, ensure the normal operation of the fuel filter and the entire fuel system, and continuously optimize the drainage control strategy through data recording and analysis to improve the performance and reliability of the system.

[0072] According to another aspect of the embodiments of the present invention, there is also provided a fuel filtering device, and the fuel filtering device is controlled based on the drainage control method of the fuel filtering device, and the drainage control method of the fuel filtering device is the drainage control method of the fuel filtering device above.

[0073] According to another aspect of the embodiments of the present invention, there is also provided an electronic device, including: a memory storing an executable program; a processor for running the program, wherein when the program runs, it executes the above method.

[0074] According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium, and the computer-readable storage medium includes a stored executable program, wherein when the executable program runs, it controls the device where the storage medium is located to execute the above method.

[0075] According to another aspect of the embodiments of the present invention, there is also provided a vehicle, and the vehicle includes the above fuel filtering device.

[0076] The embodiments of the present application also provide a computer program product, including a non-volatile computer-readable storage medium for storing a computer program, and when the computer program is executed by a processor, it implements the methods in various embodiments of the present invention.

[0077] In the above embodiments of the present invention, the descriptions of the various embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0078] In the several embodiments provided by the present application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only illustrative. For example, the division of the units can be a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of the units or modules can be in electrical or other forms.

[0079] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0080] In addition, in each embodiment of the present invention, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0081] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. And the aforementioned storage medium includes: USB flash drives, read-only memories (ROMs), random access memories (RAMs), mobile hard disks, magnetic disks, or optical discs and other various media that can store program codes.

[0082] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A drainage control method for a fuel filtering device, characterized in that, The described drainage control method includes: Obtaining the operating condition information of the target vehicle, the water level information, and the environmental information of the environment where the target vehicle is located, where the water level information includes the liquid level height in the water collecting part of the fuel filter device; Generating a target control instruction set based on at least one of the operating condition information, the water level information, and the environmental information, where the target control instruction set is used to control the drainage liquid level threshold of the fuel filter device, the drainage action of the drainage valve of the fuel filter device, and the operating parameters of the engine.

2. The drainage control method according to claim 1, characterized in that Generating a target control instruction set based on at least one of the operating condition information, the water level information, and the environmental information includes: Determining the engine start-stop frequency and the engine continuous working duration based on the operating condition information; In response to the engine start-stop frequency within a preset time period being greater than the frequency threshold or the engine continuous working duration being greater than the duration threshold, generating a first target control instruction in the target control instruction set, where the first target control instruction is used to increase the drainage liquid level threshold.

3. The drainage control method according to claim 2, wherein Generating a target control instruction set based on at least one of the operating condition information, the water level information, and the environmental information further includes: In response to the engine continuous working duration being greater than the duration threshold, determining whether the liquid level height is greater than the adjusted drainage liquid level threshold; If so, generating a second target control instruction in the target control instruction set, where the second target control instruction is used to control the drainage valve to work in an intermittent drainage mode within a target time period until the liquid level height is less than the adjusted drainage liquid level threshold, where the target time period is the time period when the engine is in a low-load operating condition during the engine continuous working duration.

4. The drainage control method according to claim 1, characterized in that Generating a target control instruction set based on at least one of the operating condition information, the water level information, and the environmental information further includes: Determining the temperature of the environment where the target vehicle is located based on the environmental information; In response to the temperature being less than the low-temperature threshold or the temperature being greater than the high-temperature threshold, generating a third target control instruction in the target control instruction set, where the third target control instruction is used to decrease the drainage liquid level threshold.

5. The drainage control method according to claim 4, characterized in that, Before determining whether the temperature is less than the low-temperature threshold or whether the temperature is greater than the high-temperature threshold, generating a target control instruction set based on at least one of the operating condition information, the water level information, and the environmental information further includes: Determining whether the temperature is lower than the freezing point value; If so, generating a fourth target control instruction in the target control instruction set, where the fourth target control instruction is used to control the drainage valve to enter the prohibited opening state.

6. The drainage control method according to claim 5, wherein The environmental information includes road information. Generating a target control instruction set based on at least one of the operating condition information, the water level information, and the environmental information further includes: Determining the road type based on the road information, where the road type includes at least one of the following: turning section, bumpy section, uphill section; In response to the road type of the road where the target vehicle is located including at least one of the turning section, the bumpy section, and the uphill section, generating the fourth target control instruction.

7. The drainage control method according to claim 1, wherein Generating a target control instruction set based on at least one of the working condition information, the water level information, and the environmental information further includes: Obtaining drainage system information, where the drainage system information includes the working state of the drainage system; In response to the working state of the drainage system being a fault state and the liquid level height being greater than the drainage liquid level threshold, generating a fifth target control instruction in the target control instruction set, where the fifth target control instruction is used to feedback-adjust the operating parameters and operating mode of the engine based on the liquid level height.

8. The drainage control method according to claim 1, wherein Generating a target control instruction set based on at least one of the working condition information, the water level information, and the environmental information further includes: Determining the vehicle speed based on the working condition information; In response to the vehicle speed being in an accelerating state and the drainage valve being in an open state, generating a sixth target control instruction in the target control instruction set, where the sixth target control instruction is used to limit the response amplitude of the vehicle's accelerator pedal and / or limit the engine speed.

9. The drainage control method according to claim 1, characterized in that Generating a target control instruction set based on at least one of the working condition information, the water level information, and the environmental information further includes: During the driving of the target vehicle, determining the gear shifting amplitude of the target vehicle based on the working condition information; Determining the engine speed of the target vehicle based on the working condition information; Determining the liquid level height difference based on the liquid level height and the drainage liquid level threshold; Generating a seventh target control instruction in the target control instruction set based on at least one of the gear shifting amplitude, the engine speed, and the liquid level height difference, where the seventh target control instruction is used to adjust the opening sequence and opening duration of the drainage valve.

10. A fuel filtering device, which is controlled based on a drainage control method of the fuel filtering device, is characterized in that The drainage control method of the fuel filtering device is the drainage control method of the fuel filtering device according to any one of claims 1 to 9.

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