Double-oil-tank oil supply system and vehicle

Abstract

The embodiment of the invention provides a double-oil-tank oil supply system and a vehicle. The double-oil-tank oil supply system comprises a main oil tank and an auxiliary oil tank. The main oil tank and the auxiliary oil tank are connected through an oil suction channel so that oil can be sucked into the main oil tank from the auxiliary oil tank. The main fuel tank and the auxiliary fuel tank are connected through an anti-overflow passage, the first connecting position of the anti-overflow passage on the main fuel tank is not lower than the second connecting position of the anti-overflow passage on the auxiliary fuel tank, and the problem that when the auxiliary fuel tank conveys fuel to the main fuel tank, the fuel in the main fuel tank overflows is solved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a dual-tank fuel supply system and a vehicle. Background Art

[0002] With the continuous development of smart car technology, people have higher and higher requirements for vehicle endurance. Therefore, the dual fuel tank design of vehicles has gradually become an important solution. The dual fuel tank design increases the fuel tank capacity by designing two fuel tanks, providing vehicles with longer driving range. In remote areas or when gas stations are sparse, vehicles with dual fuel tank systems can have enough fuel to reach their destination.

[0003] In the dual fuel tank system in the prior art, the fuel in the auxiliary fuel tank is transported to the main fuel tank through the oil suction device, and the working principle of the oil suction device is: use the return oil volume of the engine to drive the oil suction device to suck fuel from the auxiliary fuel tank and then transport it to the main fuel tank.

[0004] However, the engine's oil return volume is positively correlated to the engine speed. When the engine speed is high, the engine's oil return volume will also increase, thereby causing the amount of fuel sucked from the auxiliary fuel tank by the oil suction device to increase, which in turn causes fuel overflow from the main fuel tank, resulting in fuel waste. Summary of the invention

[0005] The embodiments of the present application provide a dual-tank fuel supply system and a vehicle, which are used to solve the problem of fuel overflowing from the main tank when too much fuel is added from the auxiliary tank to the main tank.

[0006] In a first aspect, an embodiment of the present application provides a dual-tank fuel supply system, comprising: a main fuel tank (1) and an auxiliary fuel tank (2);

[0007] The main oil tank (1) and the auxiliary oil tank (2) are connected via an oil suction passage (3) so as to suck oil from the auxiliary oil tank (2) into the main oil tank (1);

[0008] The main oil tank (1) and the auxiliary oil tank (2) are connected via an anti-overflow passage (4), wherein a first connection position of the anti-overflow passage (4) in the main oil tank is not lower than a second connection position of the anti-overflow passage (4) in the auxiliary oil tank (2).

[0009] In a possible implementation manner, a one-way valve (5) is provided on the anti-overflow passage (4) for limiting the oil in the auxiliary oil tank (2) from flowing to the main oil tank (1) through the anti-overflow passage (4).

[0010] In a possible implementation manner, the first connection position is close to the top of the main fuel tank (1), and the second connection position is close to the top of the auxiliary fuel tank (2).

[0011] In a possible embodiment, an oil storage device (6) is further provided on the overflow prevention passage, and the oil storage device (6) comprises the movable bottom (7) and the spring (8). When the amount of oil in the overflow prevention passage (4) is greater than or equal to a preset amount of oil, the spring (8) is compressed by the oil in the overflow prevention passage (4), and the movable bottom (7) is located at the bottom of the oil storage device (6). Part of the oil in the overflow prevention passage (4) flows into the oil storage device (6). When the amount of oil in the overflow prevention passage (4) is less than the preset amount of oil, the spring (8) pushes the movable bottom (7) out, so that the oil in the oil storage device (6) flows into the auxiliary oil tank (2).

[0012] In a possible implementation manner, when the spring (8) returns to its original state, it is flush with the inner surface of the movable bottom (7) and the anti-overflow passage (4).

[0013] In a possible implementation, a plurality of flow sensors (9) are sequentially arranged on the overflow prevention passage (4), and when the flow rate measured by the flow sensor (9) close to the first connection position is greater than the flow rate measured by the flow sensor (9) far from the first connection position, a prompt message is sent, wherein the prompt message is used to indicate that the overflow prevention passage (4) is leaking.

[0014] In a possible embodiment, a first connection hole (10) is provided at the first connection position, a second connection hole (11) is provided at the second connection position, and both ends of the linear pipe can be movably fixed to the first connection hole (10) and the second connection hole (11).

[0015] In a possible implementation manner, the diameter of the anti-overflow passage (4) is greater than or equal to the diameter of the oil suction passage (3).

[0016] In a possible implementation, the oil suction passage (3) comprises: a first oil pipe (12) and a second oil pipe (13); the system further comprises: an engine (14).

[0017] The oil outlet of the auxiliary oil tank (2) is connected to the oil suction device (15) via the first oil pipe (12), and the oil suction device (15) is connected to the oil inlet of the main oil tank (1) via the second oil pipe (13);

[0018] The oil inlet of the engine (14) is connected to the oil outlet of the main oil tank (1);

[0019] The oil return port of the engine (14) is connected to the oil suction device (15) for sucking oil from the auxiliary oil tank (2) into the main oil tank (1) under the oil return drive of the engine (14).

[0020] In a second aspect, an embodiment of the present application provides a vehicle, including the dual fuel tank fuel supply system provided in the first aspect of the embodiment of the present application.

[0021] The embodiment of the present application provides a dual-tank fuel supply system and a vehicle, wherein a main fuel tank (1) of the dual-tank fuel supply system stores the main amount of fuel required by an engine (14), and an auxiliary fuel tank (2) of the dual-tank fuel supply system serves as a spare fuel tank to store additional fuel, so that when the main fuel tank (1) is short of fuel, the auxiliary fuel tank (2) provides fuel to the main fuel tank (1). The main fuel tank (1) and the auxiliary fuel tank (2) are connected via an oil suction passage (3) to suck oil from the auxiliary fuel tank (2) into the main fuel tank (1) when the main fuel tank (1) is short of fuel. The main fuel tank (1) and the auxiliary fuel tank (2) are also connected via an anti-overflow passage (4), wherein the anti-overflow passage (4) at a first connection position of the main fuel tank (1) is not lower than the anti-overflow passage (4) at a second connection position of the auxiliary fuel tank (2). By providing the anti-overflow passage (4) between the main fuel tank (1) and the auxiliary fuel tank (2), when the fuel liquid level of the main fuel tank (1) is higher than the fuel liquid level of the auxiliary fuel tank (2), the fuel will flow back from the main fuel tank (1) to the auxiliary fuel tank (2) through the anti-overflow passage (4) due to gravity, thereby preventing excessive fuel in the main fuel tank (1) from overflowing the fuel of the main fuel tank (1). BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0023] Figure 1 A schematic diagram of the structure of a dual fuel tank fuel supply system provided in an embodiment of the present application;

[0024] Figure 2 It is a schematic diagram of the structure of the oil storage device;

[0025] Figure 3 It is a schematic diagram of the structure when there is no fuel in the oil storage device.

[0026] Reference numerals:

[0027] 1-main oil tank; 2-auxiliary oil tank; 3-oil suction passage; 4-overflow prevention passage; 5-check valve; 6-oil storage device; 7-movable bottom; 8-spring; 9-flow sensor; 10-first connecting hole; 11-second connecting hole; 12-first oil pipe; 13-second oil pipe; 14-engine; 15-oil suction device.

[0028] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution in the embodiment of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiment of the present application. Obviously, the described embodiment is only a part of the embodiment of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0030] It should be noted that in the description of the embodiments of the present application, terms such as "upper", "lower", "inside" and "outside" indicating orientation or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of description, and do not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the embodiments of the present application.

[0031] In addition, it should be noted that the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0032] In this application, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] In the prior art, when an oil suction device is used to suck fuel from an auxiliary fuel tank and then deliver it to a main fuel tank, the power of the oil suction device comes from the amount of oil returned from the engine, and the amount of oil returned from the engine is positively correlated with the engine speed. Therefore, when the engine is at a high speed, the amount of oil returned from the engine also increases accordingly, resulting in an increase in the amount of fuel sucked from the auxiliary fuel tank by the oil suction device, which in turn causes the fuel in the main fuel tank to overflow, resulting in fuel waste.

[0034] Based on this, the inventive concept of this application is how to provide a dual-tank fuel supply system and vehicle, and how to transfer the fuel in the main tank back to the auxiliary tank when too much fuel is transferred from the auxiliary tank to the main tank, resulting in an excessive amount of fuel in the main tank. Based on this, an anti-overflow passage is set in the main tank and the auxiliary tank, and the first connection position of the anti-overflow passage in the main tank is higher than the second connection position of the anti-overflow passage in the auxiliary tank. Therefore, when the fuel reaches the first connection position in the main tank, due to gravity, the fuel flows through the first connection position to the anti-overflow passage, and finally flows to the auxiliary tank, thereby avoiding the problem of fuel overflow in the main tank.

[0035] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0036] Figure 1 A schematic diagram of the dual fuel tank fuel supply system structure provided in the embodiment of the present application is shown in FIG. Figure 1 As shown, the dual fuel tank oil supply system provided in the embodiment of the present application comprises: a main fuel tank (1) and an auxiliary fuel tank (2).

[0037] Specifically, the main oil tank (1) and the auxiliary oil tank (2) are connected via an oil suction passage (3) so as to suck oil from the auxiliary oil tank (2) into the main oil tank (1); the main oil tank (1) and the auxiliary oil tank (2) are connected via an anti-overflow passage (4), and the anti-overflow passage (4) at a first connection position of the main oil tank (1) is not lower than the anti-overflow passage (4) at a second connection position of the auxiliary oil tank (2).

[0038] In the embodiment of the present application, the main fuel tank (1) of the dual fuel tank fuel supply system stores the main amount of fuel required by the engine (14), and the auxiliary fuel tank (2) of the dual fuel tank fuel supply system serves as a spare fuel tank to store additional fuel so that when the main fuel tank (1) is short of fuel, the auxiliary fuel tank (2) provides fuel to the main fuel tank (1). The main fuel tank (1) and the auxiliary fuel tank (2) are connected via an oil suction passage (3) to suck fuel from the auxiliary fuel tank (2) into the main fuel tank (1) when the main fuel tank (1) is short of fuel. The main fuel tank (1) and the auxiliary fuel tank (2) are also connected via an anti-overflow passage (4), wherein the anti-overflow passage (4) at a first connection position of the main fuel tank (1) is not lower than the anti-overflow passage (4) at a second connection position of the auxiliary fuel tank (2). By providing the anti-overflow passage (4) between the main fuel tank (1) and the auxiliary fuel tank (2), when the fuel liquid level of the main fuel tank (1) is higher than the fuel liquid level of the auxiliary fuel tank (2), the fuel will flow back from the main fuel tank (1) to the auxiliary fuel tank (2) through the anti-overflow passage (4) due to gravity, thereby preventing excessive fuel in the main fuel tank (1) from overflowing the fuel of the main fuel tank (1).

[0039] In the embodiment of the present application, the main oil tank (1) and the auxiliary oil tank (2) are connected via an oil suction passage (3) so as to suck oil from the auxiliary oil tank (2) into the main oil tank (1); the main oil tank (1) and the auxiliary oil tank (2) are connected via an anti-overflow passage (4), and the anti-overflow passage (4) at a first connection position of the main oil tank (1) is not lower than the anti-overflow passage (4) at a second connection position of the auxiliary oil tank (2). Compared with the prior art, when the speed at which the auxiliary fuel tank (2) delivers fuel to the main fuel tank (1) is too high, resulting in fuel overflow from the main fuel tank (1), the present application provides an anti-overflow passage (4) between the main fuel tank (1) and the auxiliary fuel tank (2), and the anti-overflow passage (4) is arranged at a first connection position of the main fuel tank (1) higher than the second connection position of the auxiliary fuel tank (2). Therefore, when the fuel in the main fuel tank (1) reaches the first connection position, due to gravity, the fuel in the main fuel tank (1) can flow into the auxiliary fuel tank (2) through the anti-overflow passage (4), thereby avoiding the problem of excessive fuel in the main fuel tank (1) causing fuel overflow.

[0040] See also Figure 1 In the embodiment of the present application, a one-way valve (5) is provided on the overflow prevention passage (4) to limit the oil in the auxiliary oil tank (2) from flowing to the main oil tank (1) through the overflow prevention passage (4).

[0041] In the embodiment of the present application, a one-way valve (5) is provided on the overflow prevention passage (4) to limit the oil in the auxiliary oil tank (2) from flowing to the main oil tank (1) through the overflow prevention passage (4). Optionally, the one-way valve (5) is a spring-loaded one-way valve, a ball-type one-way valve or a diaphragm one-way valve. More optionally, the one-way valve (5) can be installed on the overflow prevention passage (4) by threaded connection. In order to ensure that the one-way valve (5) can be tightly closed on the overflow prevention passage (4) to prevent fuel leakage, a gasket is installed at the connection between the one-way valve (5) and the overflow prevention passage (4) to prevent fuel leakage from the one-way valve (5).

[0042] See also Figure 1 In the embodiment of the present application, the first connection position is close to the top of the main oil tank (1), and the second connection position is close to the top of the auxiliary oil tank (2).

[0043] In the embodiment of the present application, since sediment, impurities and water are more likely to accumulate at the bottom of the oil tank, the first connection position is set near the top of the main oil tank (1), and the second connection position is set near the top of the auxiliary oil tank (2). This can prevent sediment, impurities and water from entering the anti-overflow passage (4) through the first connection position, thereby preventing the anti-overflow passage (4) from being blocked.

[0044] See also Figure 1In the embodiment of the present application, an oil storage device (6) is further provided on the overflow prevention passage (4), and the oil storage device (6) comprises a movable bottom (7) and a spring (8). When the amount of oil in the overflow prevention passage (4) is greater than or equal to a preset amount of oil, the spring (8) is compressed by the oil in the overflow prevention passage (4), and the movable bottom (7) is located at the bottom of the oil storage device (6). Part of the oil in the overflow prevention passage (4) flows into the oil storage device (6). When the amount of oil in the overflow prevention passage (4) is less than the preset amount of oil, the spring (8) pushes the movable bottom (7) out to allow the oil in the oil storage device (6) to flow into the auxiliary oil tank (2).

[0045] In the embodiments of the present application, Figure 2 The schematic diagram of the structure of the oil storage device is shown in FIG. An additional oil storage device (6) is provided on the anti-overflow passage (4) to balance the fuel distribution of the dual-tank fuel supply system. Specifically, the oil storage device (6) includes a movable bottom (7) and a spring (8). The movable bottom (7) can fit tightly against the outer shell of the oil storage device (6) to prevent fuel leakage. The spring (8) is located below the movable bottom (7) to provide an upward thrust.

[0046] The working principle of the oil storage device (6) is as follows: when the amount of oil in the anti-overflow passage (4) is greater than or equal to the preset amount of oil, the pressure of the fuel increases, pushing the movable bottom (7) of the oil storage device (6) to move downward against the elastic force of the spring (8), the spring (8) is compressed, and the movable bottom (7) moves downward to provide additional storage space for the fuel, thereby reducing the amount of oil in the anti-overflow passage (4), thereby preventing excessive fuel in the anti-overflow passage (4) from causing fuel blockage, and thereby causing fuel overflow in the main fuel tank (1). As the amount of oil in the anti-overflow passage (4) decreases, the pressure of the oil on the movable bottom (7) of the oil storage device (6) decreases, and at this time the spring (8) gradually recovers its original length, pushing the movable bottom (7) to move upward, and the fuel in the oil storage device (6) is pushed out into the anti-overflow passage (4), and then flows back into the auxiliary fuel tank (2). By providing an oil storage device (6) on the overflow prevention passage (4), it is helpful to solve the problem that when there is too much fuel in the overflow prevention passage (4), it cannot flow back to the auxiliary fuel tank (2) in time, causing the overflow prevention passage (4) to be blocked, and finally causing the fuel in the main fuel tank (1) to be unable to be discharged to the overflow prevention passage (4), causing the fuel in the main fuel tank (1) to overflow. In addition, the oil storage device (6) uses a movable bottom (7) and a spring (8) to automatically adjust the volume of the oil storage device (6) through the fuel pressure in the overflow prevention passage (4), without the need to manually open and close the oil storage device (6), thereby improving the automation level of the dual fuel tank fuel supply system.

[0047] See also Figure 3 , Figure 3It is a schematic diagram of the structure when there is no fuel in the oil storage device (6). In the embodiment of the present application, when the spring (8) returns to its original state, it is flush with the inner surface of the movable bottom (7) and the anti-overflow passage (4).

[0048] In the embodiment of the present application, as the amount of oil in the overflow prevention passage (4) decreases, the pressure of the oil on the movable bottom (7) of the oil storage device (6) decreases. When the spring (8) gradually recovers its original length, the movable bottom (7) and the inner surface of the overflow prevention passage (4) are flush. At this time, the flow resistance of the fuel in the overflow prevention passage (4) is minimized, which is more conducive to the smooth flow of the fuel in the overflow prevention passage (4).

[0049] See also Figure 1 In an embodiment of the present application, a plurality of flow sensors (9) are sequentially arranged on the overflow prevention passage (4), and when the flow rate measured by the flow sensor (9) close to the first connection position is greater than the flow rate measured by the flow sensor (9) far from the first connection position, a prompt message is sent, and the prompt message is used to indicate that the overflow prevention passage (4) is leaking.

[0050] In the embodiment of the present application, a plurality of flow sensors (9) are evenly arranged in sequence on the overflow prevention passage (4), starting from the position close to the first connection position, i.e., the main fuel tank (1). When the flow rate measured by the flow sensor (9) close to the first connection position is greater than the flow rate measured by the flow sensor (9) far from the first connection position, a prompt message is sent, and the prompt message is used to indicate that the overflow prevention passage (4) is leaking. For example, two flow sensors (9) can be arranged, i.e., a first flow sensor is arranged at a position close to the main fuel tank (1), and a second flow sensor is arranged at a position close to the auxiliary fuel tank (2). The first flow sensor and the second flow sensor monitor the fuel flow rate at their positions in real time. When the flow rate measured by the first flow sensor is greater than the flow rate measured by the second flow sensor, it indicates that the overflow prevention passage (4) may have a crack, etc., which may cause fuel leakage, and it is necessary to remind the operator to conduct inspection and maintenance in time.

[0051] See also Figure 1 In the embodiment of the present application, a first connection hole (10) is provided at the first connection position, a second connection hole (11) is provided at the second connection position, and both ends of the linear pipe can be movably fixed to the first connection hole (10) and the second connection hole (11).

[0052] In the embodiment of the present application, the overflow prevention passage (4) is configured as a linear pipe, and a first connection hole (10) is provided at the first connection position, and a second connection hole (11) is provided at the second connection position, for fixing the overflow prevention passage (4). Optionally, the overflow prevention passage (4) can be movably fixed to the first connection hole (10) and the second connection hole (11) by bolts or buckles, so that the overflow prevention passage (4) can be flexibly installed and disassembled when a fault occurs, such as a crack.

[0053] See also Figure 1 In the embodiment of the present application, the diameter of the anti-overflow passage (4) is greater than or equal to the diameter of the oil suction passage (3).

[0054] In the embodiment of the present application, the diameter of the overflow prevention passage (4) is greater than or equal to the diameter of the oil suction passage (3), so as to avoid the oil being unable to pass through in time due to the small diameter of the overflow prevention passage (4) during rapid oil return, thereby causing oil overflow or abnormal increase in system pressure, resulting in a crack failure in the overflow prevention passage (4). In addition, by increasing the diameter of the overflow prevention passage (4), it is possible to ensure that the oil can pass smoothly when necessary, thereby avoiding the occurrence of overflow in the main oil tank (1).

[0055] See also Figure 1 In the embodiment of the present application, the oil suction passage (3) includes: a first oil pipe (12) and a second oil pipe (13); the system also includes: an engine (14);

[0056] Specifically, the oil outlet of the auxiliary oil tank (2) is connected to the oil suction device (15) through the first oil pipe (12), and the oil suction device (15) is connected to the oil inlet of the main oil tank (1) through the second oil pipe (13); the oil inlet of the engine (14) is connected to the oil outlet of the main oil tank (1); and the oil return port of the engine (14) is connected to the oil suction device (15) so that oil is sucked from the auxiliary oil tank (2) into the main oil tank (1) under the oil return drive of the engine (14).

[0057] In an embodiment of the present application, the dual-tank oil supply system further comprises an engine (14), and the oil suction passage (3) between the main oil tank (1) and the auxiliary oil tank (2) comprises a first oil pipe (12) and a second oil pipe (13). The oil outlet of the auxiliary oil tank (2) is connected to the oil suction device (15) through the first oil pipe (12), ensuring that the fuel flows from the auxiliary oil tank (2) to the oil suction device (15); the oil suction device (15) is connected to the oil inlet of the main oil tank (1) through the second oil pipe (13), ensuring that the fuel in the oil suction device (15) is delivered to the main oil tank (1); the oil inlet of the engine (14) is connected to the oil outlet of the main oil tank (1), and the engine (14) is used to suck fuel from the main oil tank (1); the oil return port of the engine (14) is connected to the oil suction device (15), which is used to return the unused fuel of the engine (14) to the oil suction device (15), so that under the oil return drive of the engine (14), the oil suction device (15) is used to suck the oil from the auxiliary oil tank (2) into the main oil tank (1).

[0058] The detailed working principle is as follows: when the engine (14) is running, the engine (14) obtains fuel from the main fuel tank (1) for combustion, and delivers the unused fuel of the engine (14) to the oil suction device (15). The oil suction device (15) delivers the fuel from the auxiliary fuel tank (2) to the main fuel tank (1) under the drive of the oil return of the engine (14). The engine (14) is continuously running, and the oil suction device (15) continuously receives the oil return of the engine (14). The device (15) continuously transfers the fuel in the auxiliary tank (2) to the main tank (1). When the fuel in the main tank (1) reaches a certain level, the fuel in the main tank (1) flows back to the auxiliary tank (2) through the overflow prevention passage (4), thereby preventing the fuel suction device (15) from continuously sucking fuel from the auxiliary tank (2) into the main tank (1) under the reflux drive of the engine (14), causing the fuel in the main tank (1) to overflow and cause fuel waste.

[0059] Based on the same inventive concept, the embodiment of the present application further provides a vehicle, including the above dual fuel tank fuel supply system provided by the embodiment of the present application. The vehicle provided by the embodiment of the present application can be applied to all application scenarios using the above dual fuel tank fuel supply system.

[0060] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A dual tank oil supply system, characterized in that: include: A main fuel tank (1) and an auxiliary fuel tank (2); The main oil tank (1) and the auxiliary oil tank (2) are connected via an oil suction passage (3) so as to suck oil from the auxiliary oil tank (2) into the main oil tank (1); The main oil tank (1) and the auxiliary oil tank (2) are connected via an anti-overflow passage (4), wherein a first connection position of the anti-overflow passage (4) in the main oil tank is not lower than a second connection position of the anti-overflow passage (4) in the auxiliary oil tank (2).

2. The system according to claim 1, characterized in that A one-way valve (5) is provided on the anti-overflow passage (4) for limiting the oil in the auxiliary oil tank (2) from flowing to the main oil tank (1) through the anti-overflow passage (4).

3. The system according to claim 1, characterized in that The first connection position is close to the top of the main oil tank (1), and the second connection position is close to the top of the auxiliary oil tank (2).

4. The system according to any one of claims 1 to 3, characterized in that An oil storage device (6) is also provided on the overflow prevention passage. The oil storage device (6) comprises a movable bottom (7) and a spring (8). When the amount of oil in the overflow prevention passage (4) is greater than or equal to a preset amount of oil, the spring (8) is compressed by the oil in the overflow prevention passage (4). The movable bottom (7) is located at the bottom of the oil storage device (6). Part of the oil in the overflow prevention passage (4) flows into the oil storage device (6). When the amount of oil in the overflow prevention passage (4) is less than the preset amount of oil, the spring (8) pushes the movable bottom (7) out to allow the oil in the oil storage device (6) to flow into the auxiliary oil tank (2).

5. The system according to claim 4, characterized in that When the spring (8) returns to its original state, it is flush with the movable bottom (7) and the inner surface of the anti-overflow passage (4).

6. The system according to any one of claims 1 to 3, characterized in that A plurality of flow sensors (9) are sequentially arranged on the overflow prevention passage (4), and when the flow rate measured by the flow sensor (9) close to the first connection position is greater than the flow rate measured by the flow sensor (9) far from the first connection position, a prompt message is sent, wherein the prompt message is used to indicate that the overflow prevention passage (4) is leaking.

7. The system according to claim 5, characterized in that A first connection hole (10) is provided at the first connection position, a second connection hole (11) is provided at the second connection position, and both ends of the linear pipe can be movably fixed to the first connection hole (10) and the second connection hole (11).

8. The system according to any one of claims 1 to 3, characterized in that The diameter of the anti-overflow passage (4) is greater than or equal to the diameter of the oil suction passage (3).

9. The system according to any one of claims 1 to 3, characterized in that The oil suction passage (3) comprises: a first oil pipe (12) and a second oil pipe (13); the system further comprises: an engine (14); The oil outlet of the auxiliary oil tank (2) is connected to the oil suction device (15) via the first oil pipe (12), and the oil suction device (15) is connected to the oil inlet of the main oil tank (1) via the second oil pipe (13); The oil inlet of the engine (14) is connected to the oil outlet of the main oil tank (1); The oil return port of the engine (14) is connected to the oil suction device (15) so as to suck oil from the auxiliary oil tank (2) into the main oil tank (1) under the oil return drive of the engine (14).

10. A vehicle, characterized in that: It comprises a dual tank oil supply system as claimed in any one of claims 1 to 9.

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