Dual tank vehicle and fuel control system and method therefor

Abstract

The application discloses a fuel control system and method for a double-tank vehicle and the double-tank vehicle. The system comprises a first controller configured to: acquire a fuel level deviation in a main tank during operation of the double-tank vehicle; generate an opening degree signal for adjusting the opening degree of a pump oil regulating valve according to the fuel level deviation; and a second controller configured to: adjust the pump oil regulating valve to a corresponding opening degree according to the opening degree signal received from the first controller; acquire a fuel consumption of the main tank and a pump oil amount of an oil pump; and adjust the opening degree of the pump oil regulating valve in real time according to the fuel consumption and the pump oil amount. Through cascade control of the first controller and the second controller, the current level of the main tank can be effectively maintained unchanged, and the level during oil supplementing can be ensured to be stable, thereby improving the stability of vehicle operation.

Description

Technical Field

[0001] This invention belongs to the field of vehicle fuel tank technology, specifically relating to a fuel control system, method, and dual-fuel-tank vehicle. Background Technology

[0002] Some models of large-tonnage cranes use a dual fuel tank supply system. When the fuel level in the main fuel tank is low, the auxiliary fuel tank is pumped to the main fuel tank manually or automatically while the vehicle is stationary to ensure the fuel level in the main fuel tank and the normal operation of the engine.

[0003] In existing fuel level control systems, fuel is pumped from the auxiliary fuel tank to the main fuel tank when the vehicle is stationary, and stops once a certain level is reached. There is no refueling during driving, resulting in large fluctuations in the fuel tank level and an inability to maintain a stable level, which affects the vehicle's operational stability. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies, the present invention provides a fuel control system, method and dual-fuel-tank vehicle, aiming to solve the technical problem that the fuel tank level fluctuates greatly during the driving process of existing vehicles and cannot maintain a stable level, which affects the operational stability of the vehicle.

[0005] To achieve the above objectives, the present invention provides a fuel control system for a dual-tank vehicle, comprising:

[0006] Main fuel tank;

[0007] Auxiliary oil tank;

[0008] The fuel pump is used to pump fuel from the auxiliary fuel tank into the main fuel tank. The fuel pump is equipped with a fuel pump regulating valve, which is used to control the amount of fuel pumped.

[0009] The first controller is configured as follows:

[0010] The fuel level deviation in the main fuel tank is obtained during the operation of a dual-fuel-tank vehicle.

[0011] An opening degree signal is generated based on the fuel level deviation to adjust the opening degree of the pump regulating valve.

[0012] The second controller is configured as follows:

[0013] The pump oil regulating valve is adjusted to the corresponding opening degree based on the opening degree signal received from the first controller;

[0014] Obtain the fuel consumption of the main fuel tank and the amount of fuel pumped by the fuel pump;

[0015] The opening degree of the oil pump regulating valve is adjusted in real time according to fuel consumption and oil pumping volume.

[0016] In this embodiment of the invention, the second controller is further configured to:

[0017] A real-time opening signal is generated based on the difference between fuel consumption and pump oil quantity to adjust the opening degree of the pump oil regulating valve in real time.

[0018] The opening degree of the pump oil regulating valve is adjusted in real time based on the real-time opening degree signal.

[0019] In this embodiment of the invention, the first controller is further configured to:

[0020] During the operation of a dual-tank vehicle, the initial and current fuel level values ​​in the main fuel tank are obtained.

[0021] The fuel level deviation is determined based on the difference between the initial and current fuel level values.

[0022] In this embodiment of the invention, the first controller is further configured to:

[0023] Obtain the auxiliary fuel level value in the auxiliary fuel tank;

[0024] If the auxiliary oil level is lower than the preset warning value, the control oil pump will stop working.

[0025] In this embodiment of the invention, a third controller is also included, configured to:

[0026] The first liquid level value in the main fuel tank and the second liquid level value in the auxiliary fuel tank are obtained when the dual fuel tank vehicle is powered on but not started.

[0027] If the first liquid level value is greater than the first preset value and the second liquid level value is greater than the second preset value, a prompt message indicating that departure is permitted is generated.

[0028] In this embodiment of the invention, the third controller is further configured to:

[0029] If the first liquid level is less than the first preset value and the second liquid level is greater than the second preset value, the oil pump is started to pump the fuel in the auxiliary oil tank into the main oil tank until the first liquid level is greater than the first preset value or the second liquid level is less than the second preset value.

[0030] In this embodiment of the invention, the third controller is further configured to:

[0031] If the first liquid level is less than the first preset value and the second liquid level is less than the second preset value, a prompt message indicating that refueling is required is generated.

[0032] In this embodiment of the invention, the third controller is further configured to:

[0033] If the first liquid level value is greater than the first preset value and the second liquid level value is less than the second preset value, a prompt message is generated indicating that the vehicle can depart but cannot be refueled online.

[0034] On the other hand, the present invention also provides a fuel control method for a dual-fuel-tank vehicle, applied to the fuel control system for a dual-fuel-tank vehicle described above, the fuel control method for a dual-fuel-tank vehicle comprising:

[0035] The first controller acquires the fuel level deviation in the main fuel tank during the operation of the dual-fuel-tank vehicle and generates an opening degree signal for adjusting the opening degree of the fuel pump regulating valve based on the fuel level deviation.

[0036] The second controller adjusts the oil pump regulating valve to the corresponding opening degree based on the opening degree signal received from the first controller; obtains the fuel consumption of the main fuel tank and the pumping quantity of the oil pump; and adjusts the opening degree of the oil pump regulating valve in real time based on the fuel consumption and pumping quantity.

[0037] To achieve the above objectives, the present invention further provides a dual-fuel-tank vehicle, wherein the dual-fuel-tank vehicle includes the fuel control system for a dual-fuel-tank vehicle as described above.

[0038] Through the above technical solution, the fuel control system for dual-tank vehicles provided by the embodiments of the present invention has the following beneficial effects:

[0039] During vehicle operation, the main fuel tank is replenished online via a fuel pump, allowing fuel in the main fuel tank to be consumed and replenished simultaneously, achieving a dynamic balance. The first controller generates an opening degree signal for coarse adjustment of the pump regulating valve by acquiring the fuel level deviation in the main fuel tank. The second controller coarsely adjusts the opening degree of the pump regulating valve based on this opening degree signal, and then finely adjusts the opening degree of the pump regulating valve by acquiring fuel consumption and pumping volume. Through the cascade control of the first and second controllers, the current fuel level in the main fuel tank can be kept constant, and the fuel level can be kept stable during refueling, thereby improving the stability of vehicle operation.

[0040] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0041] The accompanying drawings are provided to illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0042] Figure 1 This is a schematic diagram of the control loop of a fuel control system for a dual-tank vehicle according to an embodiment of the present invention;

[0043] Figure 2 This is a schematic flowchart of a fuel control method for a dual-tank vehicle according to a first embodiment of the present invention.

[0044] Figure 3 This is a schematic flowchart of a second embodiment of the fuel control method for a dual-tank vehicle according to the present invention;

[0045] Figure 4 This is a schematic flowchart of a third embodiment of the fuel control method for a dual-tank vehicle according to the present invention;

[0046] Figure 5 This is a schematic flowchart of the fourth embodiment of the fuel control method for a dual-tank vehicle according to the present invention;

[0047] Figure 6 This is a schematic flowchart of the fifth embodiment of the fuel control method for a dual-tank vehicle according to the present invention.

[0048] Explanation of reference numerals in the attached figures

[0049] 10 Main oil tank 20 Pump oil regulating valve

[0050] 30 First controller 40 Second controller Detailed Implementation

[0051] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0052] The present invention, including a fuel control system, method, and dual-fuel-tank vehicle, is described below with reference to the accompanying drawings.

[0053] like Figure 1 As shown, the present invention provides a fuel control system for a dual-tank vehicle, comprising:

[0054] Main fuel tank 10;

[0055] Auxiliary oil tank;

[0056] The oil pump is used to pump fuel from the auxiliary oil tank into the main oil tank 10. The oil pump is equipped with a pump oil regulating valve 20, which is used to control the amount of fuel pumped by the oil pump.

[0057] The first controller 30 is configured as follows:

[0058] During the operation of a dual-fuel-tank vehicle, the fuel level deviation in the main fuel tank 10 is obtained;

[0059] An opening degree signal is generated based on the fuel level deviation to adjust the opening degree of the pump oil regulating valve 20.

[0060] The second controller 40 is configured to:

[0061] The oil pump regulating valve 20 is adjusted to the corresponding opening degree according to the opening degree signal received from the first controller 30;

[0062] Obtain the fuel consumption of the main fuel tank 10 and the pumping volume of the fuel pump;

[0063] The opening degree of the oil pump regulating valve 20 is adjusted in real time according to the fuel consumption and oil pumping volume.

[0064] In this embodiment, a main fuel level sensor for detecting the fuel level in the main fuel tank 10 can be installed in the main fuel tank 10, and an auxiliary fuel level sensor for detecting the fuel level in the auxiliary fuel tank can be installed in the auxiliary fuel tank. A fuel pump is used to pump fuel from the auxiliary fuel tank into the main fuel tank 10. The fuel pump is equipped with a fuel pump regulating valve 20, which controls the amount of fuel pumped from the auxiliary fuel tank into the main fuel tank 10. Both the first controller 30 and the second controller 40 can be PID controllers. Furthermore, an online fuel replenishment switch can be installed in the dual-fuel tank vehicle. The driver can enter the online fuel replenishment mode by turning on the online fuel replenishment switch, that is, by cascading control of the first controller 30 and the second controller 40 to replenish the main fuel tank 10 online; the driver can also turn off the online fuel replenishment switch to drive normally.

[0065] In this embodiment of the invention, during vehicle operation, the main fuel tank 10 is replenished online via an oil pump, allowing the fuel in the main fuel tank 10 to be consumed and replenished simultaneously, achieving dynamic balance. The first controller 30 obtains an opening degree signal for adjusting the opening degree of the pump regulating valve 20 by acquiring the fuel level deviation in the main fuel tank 10. The second controller 40 performs coarse adjustment of the opening degree of the pump regulating valve 20 based on the opening degree signal, and then fine-tunes the opening degree of the pump regulating valve 20 by acquiring the fuel consumption and pumping volume. That is, the first controller 30 and the second controller 40 perform cascade control. Through the cascade control of the first controller 30 and the second controller 40, the current liquid level of the main fuel tank 10 can be kept constant, and the liquid level can be kept stable during replenishment, thereby improving the stability of vehicle operation.

[0066] In this embodiment of the invention, the fuel control system for a dual-tank vehicle includes a main control loop and an auxiliary control loop. The auxiliary control loop consists of a fuel pump quantity, a fuel pump regulating valve 20, and a second controller 40. The main control loop consists of the fuel level in the main fuel tank 10, a first controller 30, and the auxiliary control loop. The control input of the main control loop is the fuel level deviation in the main fuel tank 10, while the control input of the auxiliary control loop is the fuel pump quantity and the fuel consumption in the main fuel tank 10. By introducing the auxiliary control loop, disturbances in fuel consumption and fuel pump quantity can be eliminated. That is, when the control input in the auxiliary control loop changes, it is not necessary to go through the main control loop; the auxiliary control loop can adjust autonomously, reducing the impact of the auxiliary control loop's control input on the fuel level in the main fuel tank 10. For example, when fuel consumption increases but the fuel pump quantity remains unchanged, the second controller 40 controls the opening degree of the fuel pump regulating valve 20 to increase based on the signals of fuel consumption and fuel pump quantity; when the fuel pump quantity decreases but fuel consumption remains unchanged, the second controller 40 controls the opening degree of the fuel pump regulating valve 20 to increase based on the signals of fuel consumption and fuel pump quantity. In this embodiment, the fuel control system for a dual-tank vehicle is equipped with three variables: fuel level deviation, fuel consumption, and pumping quantity, as well as two loops: a main control loop and an auxiliary control loop. This keeps the amount of fuel 10 in the main tank constant, effectively reducing fuel level fluctuations in the main tank 10 and quickly stabilizing the fuel level in the main tank 10.

[0067] Specifically, in this embodiment, the first controller 30 is configured to acquire the fuel level deviation in the main fuel tank 10 during the operation of the dual-tank vehicle, generate an opening degree signal for adjusting the opening degree of the pump regulating valve 20 based on the fuel level deviation, and output it to the second controller 40; the second controller 40 is configured to adjust the pump regulating valve 20 to the corresponding opening degree based on the opening degree signal received from the first controller 30; acquire the fuel consumption of the main fuel tank 10 and the pumping amount of the fuel pump; and adjust the opening degree of the pump regulating valve 20 in real time based on the fuel consumption and the pumping amount. It should be noted that when the fuel level deviation in the main fuel tank 10 is 0, the first controller 30 generates a signal of 0 for adjusting the opening degree of the pump regulating valve 20. The first controller 30 outputs the opening degree signal to the second controller 40. After receiving the opening degree signal, the second controller 40, since the opening degree signal is 0, can assume that no adjustment is needed to the current opening degree of the pump regulating valve 20. When the fuel level deviation is not 0, the first controller 30 generates an opening degree signal for adjusting the opening degree of the pump regulating valve 20. This opening degree signal includes the direction information and degree information. That is, after receiving the opening degree signal, the second controller 40 can obtain information on how much the pump regulating valve 20 needs to be opened wider or narrower. Therefore, it can adjust the pump regulating valve 20 to the corresponding opening degree based on this opening degree signal. Then, the second controller 40 obtains the fuel consumption of the main fuel tank 10 and the pumping volume of the fuel pump, and adjusts the opening degree of the pump regulating valve 20 in real time based on the fuel consumption and pumping volume. That is, the second controller 40 first coarsely adjusts the opening degree of the pump oil regulating valve 20 according to the received opening degree signal, and then further fine-tunes the opening degree of the pump oil regulating valve 20 according to the fuel consumption and pump oil quantity.

[0068] Furthermore, the second controller 40 is configured to: generate a real-time opening degree signal for real-time adjustment of the opening degree of the pumping oil regulating valve 20 based on the difference between fuel consumption and pumping oil quantity; and adjust the opening degree of the pumping oil regulating valve 20 in real time based on the real-time opening degree signal. In this embodiment, after obtaining the fuel consumption and pumping oil quantity, the second controller 40 can calculate the difference between the fuel consumption and pumping oil quantity. Based on this difference, it can determine whether to increase or decrease the pumping oil quantity, that is, it can generate a real-time opening degree signal for real-time adjustment of the opening degree of the pumping oil regulating valve 20. After obtaining the real-time opening degree signal, since the second controller 40 has already coarsely adjusted the opening degree of the pumping oil regulating valve 20 based on the opening degree signal generated by the first controller 30, it is now necessary to finely adjust the opening degree of the pumping oil regulating valve 20 based on the real-time opening degree signal. Specifically, when the consumption difference is greater than 0, it indicates that the fuel consumption is greater than the pumping fuel volume. In this case, the opening degree of the pumping fuel regulating valve 20 needs to be increased in real time according to the consumption difference. When the consumption difference is less than 0, it indicates that the fuel consumption is less than the pumping fuel volume. In this case, the opening degree of the pumping fuel regulating valve 20 needs to be decreased in real time according to the consumption difference. When the consumption difference is equal to 0, it indicates that the fuel consumption is equal to the pumping fuel volume. In this case, it is not necessary to adjust the opening degree of the pumping fuel regulating valve 20 according to the consumption difference, that is, it is not necessary to adjust the set value in the second controller 40. Therefore, the opening degree of the pumping fuel regulating valve 20 can be adjusted in real time according to the real-time opening degree signal to ensure that the liquid level in the main fuel tank 10 remains stable.

[0069] For example, in one embodiment, the first controller 30 generates an opening degree signal of increasing the opening degree of the pump oil regulating valve 20 by A degree based on the fuel level deviation. The first controller 30 outputs the signal of increasing A degree to the second controller 40. After receiving the signal of increasing A degree, the second controller 40 controls the pump oil regulating valve 20 to move in the direction of increasing A degree. The second controller 40 then generates a real-time opening degree signal of increasing B degree based on the fuel consumption of the main fuel tank 10 and the pumping volume of the fuel pump. At this time, the second controller 40 controls the pump oil regulating valve 20 to increase A+B degree. In another embodiment, the first controller 30 generates an opening degree signal, "increase C degree," for adjusting the opening degree of the pump regulating valve 20 based on the fuel level deviation. The first controller 30 outputs the "increase C degree" signal to the second controller 40. After receiving the "increase C degree" signal, the second controller 40 controls the pump regulating valve 20 to move in the direction of increasing C degree. The second controller 40 then generates an actual opening degree signal, "decrease D degree," for adjusting the opening degree of the pump regulating valve 20 in real time based on the fuel consumption of the main fuel tank 10 and the pumping volume of the fuel pump. When C is greater than D, the second controller 40 controls the pump regulating valve 20 to increase CD degree; when C is less than D, the second controller 40 controls the pump regulating valve 20 to decrease DC degree.

[0070] Furthermore, the first controller 30 is configured to: acquire the initial and current fuel level values ​​in the main fuel tank 10 during the operation of the dual-tank vehicle; and determine the fuel level deviation based on the difference between the initial and current fuel level values. Specifically, during vehicle operation, the first controller 30 can acquire the initial and current fuel level values ​​in the main fuel tank 10 through a main fuel level sensor installed in the main fuel tank 10, and then calculate the difference between the initial and current fuel level values ​​as the fuel level deviation. When the fuel level deviation is positive, it indicates that the fuel level in the main fuel tank 10 has decreased; when the fuel level deviation is negative, it indicates that the fuel level in the main fuel tank 10 has increased. It should be noted that the initial fuel level value can be the fuel level value in the main fuel tank when the vehicle starts online refueling, or the fuel level value in the main fuel tank when the vehicle starts driving, or an initial value preset in the first controller 30.

[0071] Furthermore, the first controller 30 is also configured to: acquire the auxiliary fuel level in the auxiliary fuel tank; and control the fuel pump to stop working when the auxiliary fuel level is lower than a preset warning value. Specifically, to prevent the fuel pump from running dry and being damaged due to excessively low fuel level in the auxiliary fuel tank, a preset warning value can be set. During vehicle operation, the first controller 30 acquires the auxiliary fuel level in the auxiliary fuel tank through an auxiliary fuel level sensor installed in the auxiliary fuel tank. If the auxiliary fuel level is lower than the preset warning value, it indicates that it is no longer suitable to add fuel, and the fuel pump is then controlled to stop working.

[0072] Furthermore, the fuel control system for the dual-tank vehicle also includes a third controller. The third controller is configured to: acquire a first fuel level value in the main fuel tank 10 and a second fuel level value in the auxiliary fuel tank when the dual-tank vehicle is powered on but not yet started; and generate a departure permission message when the first fuel level value is greater than a first preset value and the second fuel level value is greater than a second preset value. Specifically, when the dual-tank vehicle is powered on but not yet started, the fuel levels in the main fuel tank 10 and the auxiliary fuel tank are detected. The third controller acquires the first fuel level value in the main fuel tank 10 and the second fuel level value in the auxiliary fuel tank through the main fuel level sensor and the auxiliary fuel tank sensor. When the first fuel level value is greater than the first preset value and the second fuel level value is greater than the second preset value, it indicates that the fuel in both the main fuel tank 10 and the auxiliary fuel tank is sufficient. At this time, the third controller can generate a departure permission message on the dual-tank vehicle's display to prompt the driver that departure is permitted. The first and second preset values ​​can be set according to actual needs.

[0073] Furthermore, the third controller is configured to: when the first liquid level is less than the first preset value and the second liquid level is greater than the second preset value, control the fuel pump to start to pump fuel from the auxiliary fuel tank into the main fuel tank 10, until the first liquid level is greater than the first preset value or the second liquid level is less than the second preset value; that is, when the first liquid level is greater than the first preset value or the second liquid level is less than the second preset value, shut down the fuel pump to stop pumping fuel. Specifically, when the first liquid level is less than the first preset value and the second liquid level is greater than the second preset value, it indicates that there is less fuel in the main fuel tank 10 and sufficient fuel in the auxiliary fuel tank. At this time, the third controller can control the fuel pump to start and pump fuel from the auxiliary fuel tank into the main fuel tank 10. When the first liquid level is greater than the first preset value, it indicates that there is sufficient fuel in the main fuel tank 10, and the third controller can control the fuel pump to shut down. When the second liquid level is less than the second preset value, it indicates that there is insufficient fuel in the auxiliary fuel tank, and the third controller can control the fuel pump to shut down. During the fuel pumping process, the user can be notified on the display that fuel pumping is in progress. After the fuel pumping is completed, the user can be notified to proceed with the vehicle.

[0074] Furthermore, the third controller is also configured to generate a refueling prompt when the first liquid level is lower than a first preset value and the second liquid level is lower than a second preset value. Specifically, when the first liquid level is lower than the first preset value and the second liquid level is lower than the second preset value, it indicates that the fuel in both the main fuel tank 10 and the auxiliary fuel tank is insufficient. At this time, the third controller can generate a refueling prompt on the display to remind the driver to refuel the dual-tank vehicle.

[0075] Furthermore, the third controller is also configured to generate a prompt message indicating that departure is permitted but online refueling is not possible when the first liquid level value is greater than the first preset value and the second liquid level value is less than the second preset value. Specifically, when the first liquid level value is greater than the first preset value and the second liquid level value is less than the second preset value, it indicates that the main fuel tank 10 has sufficient fuel, while the auxiliary fuel tank has insufficient fuel. At this time, the third controller can generate a prompt message on the display indicating that departure is permitted but online refueling is not possible.

[0076] To achieve the above objectives, such as Figure 2 As shown, Figure 2 This is a flowchart illustrating a first embodiment of the fuel control method for a dual-fuel-tank vehicle according to the present invention. The present invention also provides a fuel control method for a dual-fuel-tank vehicle, applied to the fuel control system for a dual-fuel-tank vehicle described above. The fuel control method includes:

[0077] S100, the first controller acquires the fuel level deviation in the main fuel tank during the operation of the dual-tank vehicle; and generates an opening degree signal for adjusting the opening degree of the fuel pump regulating valve based on the fuel level deviation;

[0078] S200, the second controller adjusts the oil pump regulating valve to the corresponding opening degree according to the opening degree signal received from the first controller; obtains the fuel consumption of the main fuel tank and the pumping quantity of the oil pump; and adjusts the opening degree of the oil pump regulating valve in real time according to the fuel consumption and the pumping quantity.

[0079] In embodiments of the present invention, such as Figure 3 As shown, Figure 3 This is a schematic flowchart of a second embodiment of the fuel control method for a dual-tank vehicle according to the present invention, wherein S200 further includes:

[0080] S210, the second controller adjusts the oil pump regulating valve to the corresponding opening degree according to the opening degree signal received from the first controller;

[0081] S220, obtains the fuel consumption of the main fuel tank and the pumping volume of the fuel pump;

[0082] S230, Generate a real-time opening degree signal for adjusting the opening degree of the pump oil regulating valve in real time based on the difference between the fuel consumption and the pump oil quantity;

[0083] S240, adjust the opening degree of the pump oil regulating valve in real time according to the real-time opening degree signal.

[0084] In embodiments of the present invention, such as Figure 4 As shown, Figure 4 This is a schematic flowchart of a third embodiment of the fuel control method for a dual-tank vehicle according to the present invention. S100 further includes:

[0085] S110, the first controller acquires the initial and current fuel level values ​​in the main fuel tank during the operation of the dual-tank vehicle;

[0086] S120, determine the fuel level deviation based on the difference between the initial liquid level value and the current liquid level value;

[0087] S130, an opening degree signal is generated based on the fuel level deviation to adjust the opening degree of the pump oil regulating valve.

[0088] In embodiments of the present invention, such as Figure 5 As shown, Figure 5 This is a schematic flowchart of the fourth embodiment of the fuel control method for a dual-tank vehicle according to the present invention. After S200, it further includes:

[0089] S300, the first controller acquires the auxiliary fuel level value of the fuel in the auxiliary fuel tank; if the auxiliary fuel level value is lower than the preset warning value, it controls the fuel pump to stop working.

[0090] In embodiments of the present invention, such as Figure 6 As shown, Figure 6 This is a flowchart illustrating a fifth embodiment of the fuel control method for a dual-fuel-tank vehicle according to the present invention. The fuel control system for the dual-fuel-tank vehicle further includes a third controller, and the fuel control method further includes:

[0091] S400, the third controller acquires the first liquid level value in the main fuel tank and the second liquid level value in the auxiliary fuel tank during the process of powering on the dual fuel tank vehicle but not starting the vehicle;

[0092] S410, if the first liquid level value is greater than the first preset value and the second liquid level value is greater than the second preset value, generate a prompt message indicating that departure is permitted;

[0093] S420, when the first liquid level value is less than the first preset value and the second liquid level value is greater than the second preset value, control the oil pump to start to pump the fuel in the auxiliary oil tank into the main oil tank until the first liquid level value is greater than the first preset value or the second liquid level value is less than the second preset value.

[0094] S430, if the first liquid level value is less than the first preset value and the second liquid level value is less than the second preset value, generate a prompt message indicating that refueling is required;

[0095] S440, if the first liquid level value is greater than the first preset value and the second liquid level value is less than the second preset value, a prompt message is generated indicating that the vehicle can depart but cannot be refueled online.

[0096] To achieve the above objectives, the present invention further provides a dual-fuel-tank vehicle, wherein the dual-fuel-tank vehicle includes the fuel control system for a dual-fuel-tank vehicle as described above. In this embodiment, the dual-fuel-tank vehicle may be a dual-fuel-tank crane. Since the dual-fuel-tank vehicle adopts all the technical solutions of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0097] Those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. This program is stored in a storage medium and includes several instructions to cause a microcontroller, chip, or processor to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0098] The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details described above. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention. It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not further describe the various possible combinations.

[0099] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the embodiments of the present invention, they should also be regarded as the content disclosed by the embodiments of the present invention.

Claims

1. A fuel control system for a dual-tank vehicle, characterized in that, include: Main fuel tank; Auxiliary oil tank; An oil pump is used to pump fuel from the auxiliary fuel tank into the main fuel tank. The oil pump is equipped with a pump regulating valve, which is used to control the amount of fuel pumped by the oil pump. The first controller is configured as follows: During the operation of a dual-tank vehicle, the initial and current fuel level values ​​in the main fuel tank are obtained. The fuel level deviation is determined based on the difference between the initial liquid level value and the current liquid level value; An opening degree signal is generated based on the fuel level deviation to adjust the opening degree of the pump regulating valve; The second controller is configured as follows: The oil pump regulating valve is adjusted to the corresponding opening degree according to the opening degree signal received from the first controller; The fuel consumption of the main fuel tank and the pumping volume of the fuel pump are obtained; A real-time opening signal is generated based on the difference between the fuel consumption and the pump oil quantity, which is used to adjust the opening degree of the pump oil regulating valve in real time. The opening degree of the oil pump regulating valve is adjusted in real time according to the real-time opening degree signal.

2. The fuel control system for a dual-tank vehicle according to claim 1, characterized in that, The first controller is also configured to: Obtain the auxiliary fuel level value in the auxiliary fuel tank; If the auxiliary oil level is lower than the preset warning value, the oil pump will be controlled to stop working.

3. The fuel control system for a dual-tank vehicle according to claim 1 or 2, characterized in that, It also includes a third controller, which is configured as follows: During the process of powering on a dual-fuel-tank vehicle but before it has started, the first liquid level value in the main fuel tank and the second liquid level value in the auxiliary fuel tank are acquired. If the first liquid level value is greater than the first preset value and the second liquid level value is greater than the second preset value, a prompt message indicating that departure is permitted is generated.

4. The fuel control system for a dual-tank vehicle according to claim 3, characterized in that, The third controller is also configured to: When the first liquid level is less than the first preset value and the second liquid level is greater than the second preset value, the oil pump is controlled to start to pump the fuel in the auxiliary oil tank into the main oil tank until the first liquid level is greater than the first preset value or the second liquid level is less than the second preset value.

5. The fuel control system for a dual-tank vehicle according to claim 3, characterized in that, The third controller is also configured to: If the first liquid level is less than the first preset value and the second liquid level is less than the second preset value, a prompt message indicating that refueling is required is generated.

6. The fuel control system for a dual-tank vehicle according to claim 3, characterized in that, The third controller is also configured to: If the first liquid level value is greater than the first preset value and the second liquid level value is less than the second preset value, a prompt message is generated indicating that the vehicle can depart but cannot be refueled online.

7. A fuel control method for a dual-tank vehicle, characterized in that, The fuel control system for a dual-fuel-tank vehicle according to any one of claims 1 to 6, wherein the fuel control method for a dual-fuel-tank vehicle comprises: The first controller acquires the fuel level deviation in the main fuel tank during the operation of the dual-fuel-tank vehicle and generates an opening degree signal for adjusting the opening degree of the fuel pump regulating valve based on the fuel level deviation. The second controller adjusts the oil pump regulating valve to the corresponding opening degree according to the opening degree signal received from the first controller; obtains the fuel consumption of the main fuel tank and the pumping quantity of the oil pump; and adjusts the opening degree of the oil pump regulating valve in real time according to the fuel consumption and the pumping quantity.

8. A dual-fuel-tank vehicle, characterized in that, The dual-fuel-tank vehicle includes a fuel control system for a dual-fuel-tank vehicle as described in any one of claims 1 to 6.

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