Fuel supply system for an engine and vehicle

Abstract

The utility model discloses an oil supply system of engine and vehicle relates to engine technical field, and the oil supply system of engine includes: at least two oil supply oil tank, and the oil supply oil tank is communicated with engine through oil supply pipeline, and the oil supply oil tank all is equipped with oil supply pump, and the oil supply pump is used for driving the oil liquid in the oil supply oil tank and flows to engine through oil supply pipeline, and the air pipe line, at least two oil supply oil tank all are communicated with the air pipe line, and the air pipe line is equipped with the air vent that communicates with outside, and the oil supply pump of one of at least two oil supply oil tank can all suck oil from another oil supply oil tank in the air vent closing time through the air pipe line. The utility model embodiment's oil supply system of engine can suck the oil liquid in another oil supply oil tank and continue to supply oil to engine to make the vehicle continue to drive when one of the oil supply oil tank has no oil but the oil supply pump is normal, and another oil supply oil tank has oil but the oil supply pump is damaged.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, and in particular to an engine fuel supply system and a vehicle. Background Technology

[0002] With economic development, people's demands for cars are also increasing. Car manufacturers have developed more types of products to meet the needs of different groups. In order to meet the demand for ultra-long range, some models have added a dual fuel tank design. Dual fuel tanks can supply fuel to the engine through fuel pumps separately. However, there is a situation where one fuel tank is empty, and the other fuel tank has fuel but the fuel pump is broken, resulting in the car having fuel but still being unable to run. There is room for improvement. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an engine fuel supply system that, when one fuel tank is empty but the fuel pump is functioning normally, and another fuel tank has fuel but its pump is faulty, draws fuel from the other fuel tank into the first fuel tank to continue supplying fuel to the engine, allowing the vehicle to continue running and improving user satisfaction.

[0004] The fuel supply system of an engine according to an embodiment of the present invention includes: at least two fuel tanks, each fuel tank being connected to the engine via a fuel supply pipeline, each fuel tank being equipped with a fuel supply pump, the fuel supply pump being used to drive the fuel in the fuel tank to flow to the engine through the fuel supply pipeline; and a venting pipeline, wherein at least two of the fuel tanks are connected to the venting pipeline, the venting pipeline being provided with a vent port communicating with the outside, the vent port being selectively openable or closed, and the fuel supply pump of one of the at least two fuel tanks being able to draw fuel from the other fuel tank through the venting pipeline when the vent port is closed.

[0005] According to the embodiment of the present invention, the engine fuel supply system connects at least two fuel tanks to a vent pipe, and the vent pipe is provided with a vent port that connects to the outside. When the vent port is open, it can ensure the internal and external pressure balance of at least two fuel tanks and prevent deformation of the fuel tanks. When the vent port is closed, the fuel pump of one fuel tank can draw fuel from the other fuel tank. Thus, when one fuel tank is empty but the fuel pump is working properly, and the other fuel tank has fuel but the fuel pump is damaged, the fuel in the other fuel tank can be drawn into one fuel tank to continue supplying fuel to the engine, allowing the vehicle to continue running and improving user satisfaction.

[0006] The fuel supply system of an engine according to some embodiments of the present invention further includes a dust cover connected to the vent of the vent pipe, the dust cover being movable relative to the vent pipe to selectively open or close the vent.

[0007] According to some embodiments of the present invention, in the fuel supply system of an engine, the dust cover is disposed outside the vent, and a ventilation gap is formed between the dust cover and the peripheral wall of the vent. The dust cover is configured to be pressable relative to the vent pipe, and the vent gap is closed after the dust cover is pressed relative to the vent pipe.

[0008] According to some embodiments of the present invention, in the fuel supply system of an engine, each of the fuel supply pumps is provided with a communication structure, and the communication structures of at least two of the fuel supply pumps are respectively connected to the vent pipe. The fuel supply pump of one of the fuel supply tanks is adapted to draw fuel from the other fuel supply tank through the corresponding communication structure and flow through the vent pipe to the communication structure corresponding to the fuel supply pump of the other fuel supply tank, and enter the other fuel supply tank.

[0009] According to some embodiments of the present invention, in the fuel supply system of an engine, each fuel pump is provided with an inlet and an outlet. The inlet is connected to the fuel tank, and the outlet is connected to the fuel supply pipeline. The connection structure is provided with a connecting inlet, a connecting outlet, and a pipe connection port. The connecting inlet is connected to the fuel tank, the pipe connection port is connected to the vent pipeline, and the connecting outlet is configured to selectively connect to the inlet.

[0010] According to some embodiments of the present invention, the fuel supply system of an engine includes a connecting structure comprising a suction rod and a suction pipe. The suction rod is movably inserted into the fuel supply tank. One end of the suction rod extends outside the fuel supply tank and forms the pipe connection port. The other end of the suction rod is connected to one end of the suction pipe and forms the connecting outlet at the connection point. The other end of the suction pipe forms the connecting inlet.

[0011] According to some embodiments of the present invention, in the engine fuel supply system, the suction rod is configured to be manually extendable and retractable relative to the fuel supply tank. When the suction rod is extended relative to the fuel supply tank, the connecting outlet is connected to the fuel inlet, and when the suction rod is retracted relative to the fuel supply tank, the connecting outlet and the fuel inlet are staggered.

[0012] According to some embodiments of the present invention, in the fuel supply system of an engine, the suction rod is constructed as a rigid tube; and / or the suction pipe is constructed as a flexible tube, and the connecting inlet extends to the bottom wall inside the fuel supply tank.

[0013] According to some embodiments of the present invention, the fuel supply system of an engine includes a venting pipeline comprising a main pipe section and at least two branch pipe sections, wherein the at least two branch pipe sections are respectively connected to fuel supply pumps of at least two fuel tanks, the at least two branch pipe sections are connected and both are connected to the main pipe section, and the vent is formed in the main pipe section.

[0014] This utility model also proposes a vehicle.

[0015] The vehicle according to the present invention includes the fuel supply system of the engine described in any of the above embodiments.

[0016] The fuel supply systems of the vehicle and the engine described above have the same advantages over the prior art, which will not be elaborated here.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the fuel supply system of an engine according to an embodiment of the present utility model; Figure 2 This is a schematic cross-section of the oil supply tank according to an embodiment of the present invention when the suction rod is retracted. Figure 1 ; Figure 3 This is a schematic cross-section of the oil supply tank according to an embodiment of the present invention when the suction rod is retracted. Figure 2 ; Figure 4 This is a schematic cross-section of the oil supply tank according to an embodiment of the present invention when the oil suction rod is extended. Figure 1 ; Figure 5 This is a schematic cross-section of the oil supply tank according to an embodiment of the present invention when the oil suction rod is extended. Figure 2 ; Figure 6 This is a schematic diagram of the structure of the dust cover according to an embodiment of the present utility model; Figure 7 This is a schematic diagram of the cooperation between the dust cover and the ventilation pipe according to an embodiment of the present utility model.

[0019] Figure label: The engine's fuel supply system 100, Fuel supply tank 1, one fuel supply tank 11, and another fuel supply tank 12. Ventilation pipe 2, vent 21, main pipe section 22, branch section 23 Fuel supply line 3, main fuel supply line 31, check valve 32, fuel filter 33 Oil pump 4, connecting structure 41, connecting inlet 411, connecting outlet 412, pipe connection port 413, suction rod 414, suction pipe 415, sealing ring 416, manual operating component 417, oil inlet 42, oil outlet 43, venturi structure 44. Engine 5, Dust cover 6, shielding part 61, connecting part 62, venting groove 63, limiting part 64, venting gap 65. Return oil line 7, main return oil line 71, three-way valve 72. 8. Fuel filler pipe, 81. Fuel filler cap, 82. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] The following is for reference. Figures 1-7 The description of the fuel supply system 100 of the engine according to an embodiment of the present utility model is as follows: when one fuel supply tank 11 is empty but the fuel supply pump 4 is working normally, while the other fuel supply tank 12 has fuel but the fuel supply pump 4 is damaged, the fuel in the other fuel supply tank 12 is drawn into one fuel supply tank 11 to continue supplying fuel to the engine 5, so that the vehicle can continue to run, which helps to improve user satisfaction.

[0024] like Figure 1 As shown, an engine fuel supply system 100 according to an embodiment of the present invention includes: at least two fuel tanks 1 and a vent pipe 2.

[0025] Fuel tank 1 is connected to engine 5 via fuel supply line 3. Each fuel tank 1 is equipped with a fuel supply pump 4, which drives the fuel in fuel tank 1 to flow to engine 5 through fuel supply line 3. At least two fuel tanks 1 are connected to vent line 2. Vent line 2 is equipped with vent port 21 that connects to the outside. Vent port 21 can be selectively opened or closed. When vent port 21 is closed, the fuel supply pump 4 of one of the fuel tanks 11 can draw fuel from the other fuel tank 12 through vent line 2.

[0026] Specifically, the fuel tank 1 has a large capacity and is used to provide stable and safe fuel storage and supply for the engine 5. At least two fuel tanks 1 are provided, that is, the number of fuel tanks 1 can be two, three or more. In this way, fuel can be stored in at least two fuel tanks 1 at the same time, which can increase the fuel storage capacity of the vehicle and improve the vehicle's range. The fuel supply line 3 allows oil to pass through. The fuel tank 1 is connected to the engine 5 through the fuel supply line 3. The two ends of the fuel supply line 3 are connected to the fuel tank 1 and the engine 5 respectively, so that the oil in the fuel tank 1 can enter the engine 5 along the fuel supply line 3 and be burned in the engine 5 to provide power for the vehicle.

[0027] Meanwhile, the fuel tank 1 is equipped with a fuel pump 4, which is used to extract the fuel in the fuel tank 1 and deliver it to the combustion chamber of the engine 5. That is, the fuel pump 4 can provide power to the fuel in the fuel tank 1 to drive the fuel in the fuel tank 1 to flow to the engine 5 through the fuel supply line 3. This can improve the reliability of the fuel in the fuel tank 1 entering the engine 5, thereby providing a stable fuel supply to the engine 5 and ensuring the reliability of the engine 5 in providing power to the vehicle.

[0028] Furthermore, the vent pipe 2 allows gas to pass through, and at least two fuel supply tanks 1 are connected to the vent pipe 2, so that at least two fuel supply tanks 1 are respectively connected to the vent pipe 2, allowing air to flow between at least two fuel supply tanks 1 and the vent pipe 2. The vent pipe 2 is provided with a vent 21 that communicates with the outside, so that the vent 21 is configured to open towards the outside of the vent pipe 2, allowing the vent 21 to communicate with the external space, thereby allowing air to flow between the vent pipe 2 and the external environment.

[0029] like Figure 1 As shown, the vent 21 is designed to be open upwards and is located at the end of the vent pipe 2 away from the fuel tank 1. This allows the fuel tank 1 to be connected to the external space through the vent pipe 2 and the vent 21, enabling air to flow between the fuel tank 1 and the external environment. This ensures the internal and external pressure balance of the fuel tank 1, prevents deformation of the fuel tank 1, and avoids interference between the fuel tank 1 and the vent 21. This ensures the reliable installation of the vent 21 and improves the operational reliability of the fuel tank 1 and the vent 21.

[0030] Furthermore, the vent 21 can be selectively opened or closed, allowing the oil supply tank 1 to be connected to or disconnected from the external space by opening or closing the vent 21. When the vent 21 is open, at least two oil supply tanks 1 can be connected to the external space through the vent 21, thereby ensuring the internal and external pressure balance of at least two oil supply tanks 1. When the vent 21 is closed, at least two oil supply tanks 1 are disconnected from the external space. At this time, at least two oil supply tanks 1 can form a closed space, allowing the oil supply pump 4 of one of the at least two oil supply tanks 11 to be connected through the vent 21. The air line 2 draws oil from one of the fuel supply tanks 12, thus diverting the oil from the other fuel supply tank 12 into one of the fuel supply tanks 11. In this way, when one fuel supply tank 11 is empty but the fuel pump 4 is working properly, while the other fuel supply tank 12 has oil but the fuel pump 4 is damaged or unable to supply fuel to the engine 5 for other reasons, the oil from the other fuel supply tank 12 can be diverted into one of the fuel supply tanks 11, thereby continuing to supply fuel to the engine 5 through one of the fuel supply tanks 11 to continue providing power to the vehicle.

[0031] It should be noted that the statement in this utility model that one of the fuel tanks 11 is empty of oil does not mean it is completely empty, but rather that the amount of oil is too low to meet the fuel supply requirements of the engine 5. Figure 1 As shown, for ease of description, let the fuel tank 1 on the right be one of the fuel tanks 11, and let the fuel tank 1 on the left be another fuel tank 12.

[0032] According to the embodiment of the present invention, the fuel supply system 100 of the engine connects at least two fuel tanks 1 to a vent pipe 2, and the vent pipe 2 is provided with a vent 21 that communicates with the outside. When the vent 21 is open, it can ensure the internal and external pressure balance of at least two fuel tanks 1, and prevent the fuel tanks 1 from deforming. When the vent 21 is closed, the fuel pump 4 of one of the fuel tanks 11 can draw fuel from the other fuel tank 12. Thus, when there is no fuel in one fuel tank 11 but the fuel pump 4 is working normally, and there is fuel in the other fuel tank 12 but the fuel pump 4 is damaged, the fuel in the other fuel tank 12 can be drawn into one fuel tank 11 to continue supplying fuel to the engine 5, so that the vehicle can continue to run, which helps to improve user satisfaction.

[0033] In some embodiments, the engine's fuel supply system 100 further includes a dust cover 6 connected to the vent 21 of the vent pipe 2. The dust cover 6 is movable relative to the vent pipe 2 to selectively open or close the vent 21.

[0034] Specifically, the vent 21 is used to connect the vent pipe 2 to the outside. The engine's fuel supply system 100 is also equipped with a dust cover 6, which is used to cover the vent 21 to prevent dust and other particles from entering the vent pipe 2 from the vent 21 and causing blockage of the vent pipe 2. The dust cover 6 is connected to the vent 21 of the vent pipe 2. The dust cover 6 can be connected to the vent pipe 2 by means of a snap-fit ​​connection to realize the installation of the dust cover 6, improve its working reliability, and the dust cover 6 can be set facing the vent 21 so as to cover the vent 21 through the dust cover 6.

[0035] Furthermore, the vent 21 can be selectively opened or closed. By configuring the dust cover 6 to be movable relative to the vent pipe 2 to selectively open or close the vent 21, the dust cover 6 can be movably connected to the vent pipe 2, making the dust cover 6 movable relative to the vent pipe 2. This allows the dust cover 6 to open or close the vent 21 while moving relative to the vent pipe 2. For example, the dust cover 6 can be moved away from the vent pipe 2 to open the vent 21, or the dust cover 6 can be moved closer to the vent pipe 2 to close the vent 21.

[0036] In some embodiments, the dust cover 6 is disposed outside the vent 21, and a ventilation gap 65 is formed between the dust cover 6 and the peripheral wall of the vent 21. The dust cover 6 is configured to be pressable relative to the ventilation pipe 2, and the ventilation gap 65 is closed after the dust cover 6 is pressed relative to the ventilation pipe 2.

[0037] Specifically, the dust cover 6 can be used to cover the vent 21. By placing the dust cover 6 over the vent 21, the dust cover 6 can cover the vent 21 from above, preventing dust and other particles from entering the vent pipe 2 and causing blockage. The dust cover 6 can also be used to selectively open or close the vent 21. When the dust cover 6 is connected to the vent 21, a ventilation gap 65 is formed between the dust cover 6 and the peripheral wall of the vent 21. The ventilation gap 65 is connected to both the vent pipe 2 and the vent 21, and allows airflow. When the dust cover 6 opens the vent 21, air can flow between the fuel tank 1 and the external environment through the vent pipe 2, the ventilation gap 65, and the vent 21, ensuring the internal and external pressure balance of the fuel tank 1.

[0038] Furthermore, the dust cover 6 is designed to be pressable relative to the vent pipe 2, meaning that the dust cover 6 can be moved relative to the vent pipe 2 by pressing, and the dust cover 6 closes the vent gap 65 after being pressed relative to the vent pipe 2. In other words, when the user presses the dust cover 6, the dust cover 6 can close the vent gap 65. At this time, at least two oil supply tanks 1 form a closed space, and the oil supply pump 4 of one of the oil supply tanks 11 can draw oil from the other oil supply tank 12 through the vent pipe 2.

[0039] It should be noted that the dust cover 6 can also be constructed to be pullable relative to the vent pipe 2. That is, the dust cover 6 can also be moved relative to the vent pipe 2 by pulling. After the dust cover 6 is pulled relative to the vent pipe 2, the vent gap 65 is opened. That is, when the user pulls the dust cover 6, the dust cover 6 can open the vent gap 65. At this time, at least two oil supply tanks 1 are connected to the vent port 21, which can ensure the internal and external pressure balance of at least two oil supply tanks 1.

[0040] In such Figures 6-7In the illustrated embodiment, the dust cover 6 includes a connecting portion 62 and a shielding portion 61. The shielding portion 61 is configured as a shielding cap and is used to shield the vent 21. The connecting portion 62 is connected to the lower part of the shielding portion 61 and can extend into the interior of the vent 21. The connecting portion 62 forms two venting grooves 63, which are distributed opposite to each other along the circumference of the connecting portion 62. A limiting portion 64 is formed in the middle of the venting grooves 63, which extends along the circumference of the connecting portion 62. When the dust cover 6 is connected to the venting pipe 2, the end of the venting pipe 2... The part can abut against the limiting part 64 to ensure that a part of the ventilation gap 65 can be formed between the shielding part 61 and the outer peripheral wall of the ventilation pipe 2. A part of the ventilation gap 65 can be formed between the connecting part 62 and the inner peripheral wall of the ventilation pipe 2. The two ventilation gaps are connected through the part of the ventilation groove 63 that extends beyond the limiting part 64, so that air can flow between the ventilation pipe 2 and the external environment. When it is necessary to close at least two oil supply tanks 1, the dust cover 6 can be pressed down to abut against the end of the ventilation pipe 2 and the shielding part 61. At this time, the vent 21 is disconnected from the outside.

[0041] In some embodiments, each oil supply pump 4 is provided with a communication structure 41, and the communication structures 41 of at least two oil supply pumps 4 are respectively connected to the venting pipe 2. The oil supply pump 4 of one oil supply tank 11 is adapted to draw oil from another oil supply tank 12 through the corresponding communication structure 41 and flow through the venting pipe 2 to the corresponding communication structure 41 of the oil supply pump 4 of one oil supply tank 11, and enter one oil supply tank 11.

[0042] Specifically, each oil supply pump 4 is provided with a connecting structure 41, meaning that at least two connecting structures 41 are provided, with each connecting structure 41 corresponding to one of the at least two oil supply pumps 4. Each connecting structure 41 is connected to a corresponding oil supply tank 1. The connecting structures 41 of the at least two oil supply pumps 4 are connected to the vent pipe 2, thus connecting the at least two connecting structures 41 through the vent pipe 2. This allows the at least two oil supply tanks 1 to be connected through the at least two connecting structures 41 and the vent pipe 2, so that when the vent 21 is closed, the oil supply pump 4 of one of the oil supply tanks 11 can still be connected through the corresponding connecting structure 41. Structure 41 draws oil from the other oil supply tank 12 and allows the oil to flow along the vent pipe 2 from the other oil supply tank 12 to the corresponding connecting structure 41 of the oil supply pump 4 of the other oil supply tank 11, so that the oil can flow into the other oil supply tank 11. In other words, the oil can be introduced from the other oil supply tank 12 into the other oil supply tank 11. When there is no oil in the other oil supply tank 11 but the oil supply pump 4 is working normally, and there is oil in the other oil supply tank 12 but the oil supply pump 4 is damaged, the oil in the other oil supply tank 12 can be drawn into the other oil supply tank 11 to continue supplying oil to the engine 5.

[0043] In some embodiments, each oil pump 4 is provided with an oil inlet 42 and an oil outlet 43. The oil inlet 42 is connected to the oil supply tank 1, and the oil outlet 43 is connected to the oil supply pipeline 3. The connecting structure 41 is provided with a connecting inlet 411, a connecting outlet 412 and a pipe connection port 413. The connecting inlet 411 is connected to the oil supply tank 1, the pipe connection port 413 is connected to the venting pipeline 2, and the connecting outlet 412 is configured to selectively connect to the oil inlet 42.

[0044] Specifically, the fuel supply pump 4 is connected between the fuel supply tank 1 and the engine 5, and is used to extract the fuel from the fuel supply tank 1 and deliver it to the combustion chamber of the engine 5. Each fuel supply pump 4 is provided with an inlet 42 and an outlet 43. The inlet 42 is connected to the internal space of the fuel supply tank 1, so that the fuel in the fuel supply tank 1 can flow from the inlet 42 to the fuel supply pump 4. The outlet 43 is connected to the fuel supply line 3, so that the fuel in the fuel supply pump 4 can flow from the outlet 43 to the fuel supply line 3. Thus, the fuel in the fuel supply tank 1 flows into the fuel supply line 3 through the fuel supply pump 4, and then flows from the fuel supply line 3 to the engine 5 to deliver fuel to the engine 5.

[0045] The connecting structure 41 is located on the oil supply pump 4. When the vent 21 is closed, the oil supply pump 4 of one of the oil supply tanks 11 can draw oil from the other oil supply tank 12 through the corresponding connecting structure 41. The oil can flow along the vent pipe 2 from the other oil supply tank 12 to the connecting structure 41 corresponding to the oil supply pump 4 of one of the oil supply tanks 11. The connecting structure 41 is provided with a connecting inlet 411, a connecting outlet 412 and a pipe connection port 413. The connecting inlet 411 is connected to the internal space of the oil supply tank 1, so that the oil in the oil supply tank 1 can enter the connecting structure 41 from the connecting inlet 411. The pipe connection port 413 is connected to the vent pipe 2, so that the connecting structure 41 and the vent pipe 2 can be connected through the pipe connection port 413, so that the oil can flow between the connecting structure 41 and the vent pipe 2.

[0046] Furthermore, the connecting outlet 412 is configured to be selectively connected to the oil inlet 42, so that the connecting outlet 412 and the oil inlet 42 can be connected or separated. When the connecting outlet 412 is connected to the oil inlet 42, the oil in the connecting structure 41 can flow from the connecting outlet 412 through the oil inlet 42 to the oil supply pump 4 to supply oil to the engine 5. When the connecting outlet 412 is separated from the oil inlet 42, the oil in the oil supply tank 1 can enter the oil supply pump 4 from the oil inlet 42, and then flow to the engine 5 from the oil outlet 43.

[0047] In some embodiments, the connecting structure 41 includes an oil suction rod 414 and an oil suction pipe 415. The oil suction rod 414 is movably inserted into the oil supply tank 1. One end of the oil suction rod 414 extends outside the oil supply tank 1 and forms a pipe connection port 413. The other end of the oil suction rod 414 is connected to one end of the oil suction pipe 415 and forms a connecting outlet 412 at the connection. The other end of the oil suction pipe 415 forms a connecting inlet 411.

[0048] Specifically, the connecting structure 41 includes an oil suction rod 414 and an oil suction pipe 415. One end of the oil suction rod 414 extends outside the oil supply tank 1 and forms a pipe connection port 413. The pipe connection port 413 is formed at the end of the oil suction rod 414 outside the oil supply tank 1, so that the oil suction rod 414 can be connected to the vent pipe 2 through the pipe connection port 413, allowing oil to flow between the oil suction rod 414 and the vent pipe 2. At the same time, the other end of the oil suction rod 414 is connected to one end of the oil suction pipe 415, and the other end of the oil suction pipe 415... The end has a connecting inlet 411, which allows the oil suction pipe 415 to be installed inside the oil supply tank 1. This facilitates the connection between the oil suction pipe 415 and the internal space of the oil supply tank 1 through the connecting inlet 411, allowing oil to enter the oil suction pipe 415 from the oil supply tank 1 through the connecting inlet 411. The oil suction rod 414 can be connected to the oil suction pipe 415, making the connecting structure 41 a single unit. This allows the installation of the connecting structure 41 when the oil suction rod 414 is inserted into the oil supply tank 1, ensuring its reliable operation.

[0049] Furthermore, a connecting outlet 412 is formed at the connection between the oil suction rod 414 and the oil suction pipe 415. The connecting outlet 412 can be selectively connected to the oil inlet 42. The oil suction rod 414 is movable relative to the oil supply tank 1. That is, while the oil suction rod 414 is movable relative to the oil supply tank 1, it can drive the connecting inlet 411 to move to connect or separate from the oil inlet 42. For example, the oil suction rod 414 can drive the connecting inlet 411 to move towards the direction closer to the oil inlet 42 to connect the connecting inlet 411 to the oil inlet 42, or the oil suction rod 414 can drive the connecting inlet 411 to move away from the oil inlet 42 to separate the connecting inlet 411 from the oil inlet 42.

[0050] In some embodiments, the suction rod 414 is configured to be retractable relative to the oil supply tank 1, with the outlet 412 communicating with the inlet 42 when the suction rod 414 is extended relative to the oil supply tank 1, and the outlet 412 and the inlet 42 being staggered when the suction rod 414 is retracted relative to the oil supply tank 1.

[0051] Specifically, the suction rod 414 is movably inserted into the oil supply tank 1. The suction rod 414 is constructed to be extendable relative to the oil supply tank 1, meaning it can be extended or retracted relative to the oil supply tank 1 via manual operation or automatic control. This allows the suction rod 414 to selectively connect the connecting outlet 412 and the oil inlet 42 when extended or retracted relative to the oil supply tank 1. Furthermore, when the suction rod 414 is extended relative to the oil supply tank 1, the connecting outlet 412 and the oil inlet... When the oil suction rod 414 is moved upward, it can drive the connecting outlet 412 to move upward. At this time, the connecting outlet 412 can be connected to the oil inlet 42. When the oil suction rod 414 retracts relative to the oil supply tank 1, the connecting outlet 412 and the oil inlet 42 are staggered. When the oil suction rod 414 is moved downward, it can drive the connecting outlet 412 to move downward. At this time, the connecting outlet 412 can be separated from the oil inlet 42.

[0052] For example, such as Figures 2-5 As shown, a manual operating component 417 is connected to the top of the suction rod 414. The manual operating component 417 provides a position for the user to manually operate the suction rod 414, allowing the user to selectively connect the connecting outlet 412 and the oil inlet 42. Two sealing rings 416 are provided on the suction rod 414, spaced apart in the vertical direction. The two sealing rings 416 are located on the inner and outer sides of the oil supply tank 1, respectively. When the suction rod 414 extends relative to the oil supply tank 1, the lower sealing ring 416 can seal between the suction rod 414 and the oil supply tank 1. When the suction rod 414 retracts relative to the oil supply tank 1, the upper sealing ring 416 can seal between the suction rod 414 and the oil supply tank 1, thus ensuring the sealing between the suction rod 414 and the oil supply tank 1 at all times.

[0053] Furthermore, in practice, the suction rod 414 can be connected to a motor or other driving component to extend and retract relative to the oil supply tank 1 via electric means. In this utility model, the connecting outlet 412 and the oil inlet 42 are selectively connected by translation, but in practice, they can also be connected by rotation or other means.

[0054] In some embodiments, the suction rod 414 is constructed as a rigid tube; and / or, the suction pipe 415 is constructed as a flexible tube, with the connecting inlet 411 extending to the bottom wall inside the oil supply tank 1.

[0055] Specifically, the suction rod 414 is inserted into the oil supply tank 1, serving as a support and conductor. The suction rod 414 is constructed as a rigid tube, such as being made of metal or plastic materials, to give it a certain strength and rigidity. This facilitates the connection between the suction rod 414 and the oil supply tank 1, enabling the installation of the connecting structure 41 and ensuring its operational reliability. It also ensures the reliability of the sealing ring 416 in sealing between the suction rod 414 and the oil supply tank 1.

[0056] Meanwhile, one end of the oil suction pipe 415 is connected to the internal space of the fuel supply tank 1, allowing oil to enter the oil suction pipe 415 from the fuel supply tank 1. The other end of the oil suction pipe 415 is connected to the oil suction rod 414, forming a connecting outlet 412 at the connection point. The connecting outlet 412 can move upward when the oil suction rod 414 extends relative to the fuel supply tank 1 to connect with the oil inlet 42. The oil suction pipe 415 is constructed as a flexible pipe, such as a corrugated pipe, so that the oil suction pipe 415 can have a certain deformation capacity. When the connecting outlet 412 moves upward, the connecting inlet 411 can be located at the bottom of the fuel supply tank 1, so as to suck as much oil as possible from one of the fuel supply tanks 12 into one of the fuel supply tanks 11, thereby improving the vehicle's range.

[0057] In some embodiments, the venting line 2 includes a main pipe section 22 and at least two branch sections 23, the at least two branch sections 23 being respectively connected to the oil supply pumps 4 of at least two oil supply tanks 1, the at least two branch sections 23 being connected and both being connected to the main pipe section 22, and the vent 21 being formed in the main pipe section 22.

[0058] Specifically, at least two oil supply tanks 1 are connected to a venting pipe 2. The venting pipe 2 includes a main pipe section 22 and at least two branch sections 23. The at least two branch sections 23 are respectively connected to the oil supply pumps 4 of the at least two oil supply tanks 1, so that the at least two branch sections 23 are distributed one-to-one with the oil supply pumps 4 of the at least two oil supply tanks 1, so that the oil supply pump 4 of each oil supply tank 1 can be connected to the corresponding branch section 23. This achieves the connection between the at least two oil supply tanks 1 and the venting pipe 2. The connection of the at least two branch sections 23 allows the at least two oil supply tanks 1 to be connected through the at least two branch sections 23, so that the oil in the other oil supply tank 12 can flow into one of the oil supply tanks 11 in sequence along the at least two branch sections 23.

[0059] Furthermore, at least two branch sections 23 are connected to the main pipe section 22, and the vent 21 is formed in the main pipe section 22. This allows at least two oil supply tanks 1 to be connected to the external space through the main pipe section 22 and the branch sections 23, ensuring the internal and external pressure balance of at least two oil supply tanks 1. When the oil in one of the oil supply tanks 12 is introduced into one of the oil supply tanks 11, the vent 21 needs to be closed by the dust cover 6. Forming the vent 21 in the main pipe section 22 can reduce the number of dust covers 6 required and reduce installation costs.

[0060] It should be noted that, as Figure 3 and Figure 5 As shown, at least two fuel tanks 1 are equipped with venturi structures 44, with inlets 42 formed in the venturi structures 44. The venturi structures 44 are connected to the fuel supply pump 4. The fuel in the fuel tanks 1 can enter the venturi structures 44 through the inlets 42, and then enter the fuel supply pump 4 to supply fuel to the engine 5. At the same time, at least two fuel tanks 1 are equipped with main pipes. The main pipes are used to draw the fuel in the fuel tanks 1 under the action of the fuel supply pump 4 and deliver it to the engine 5. The venturi structures 44 are connected to the main pipes. The fuel entering the venturi structures 44 can be drawn to the fuel supply pump 4 along with the fuel in the main pipes. Thus, when there is enough fuel in at least two fuel tanks 1 and the fuel supply pump 4 is working properly, the fuel in at least two fuel tanks 1 can flow to the fuel supply pump 4 through the corresponding main pipes and venturi structures 44, and be delivered to the engine 5 by the fuel supply pump 4.

[0061] When one of the fuel supply tanks 11 is empty but the fuel supply pump 4 is functioning normally, and the other fuel supply tank 12 has fuel but the fuel supply pump 4 is damaged, the dust cover 6 can be pressed to form a closed space between at least two fuel supply tanks 1. The normal fuel supply pump 4 can then be started. At this time, the oil in the other fuel supply tank 12 can enter the corresponding connecting structure 41 from the connecting inlet 411, and then flow from the corresponding connecting structure 41 through the vent pipe 2 to the connecting structure 41 corresponding to one of the fuel supply tanks 11. That is, the oil can enter one of the fuel supply tanks 11. In one of the fuel supply tanks 11, the oil enters the Venturi structure 44 from the connecting outlet 412 through the oil inlet 42. After entering the Venturi structure 44, the oil flows into the fuel supply pump 4 along with the oil in the main pipe, and then enters the engine 5 through the fuel supply pump 4.

[0062] Moreover, such as Figure 1As shown, at least two oil supply tanks 1 are connected to the oil filling port through the oil filling pipeline 8. The oil filling port is used to selectively connect to the oil filling gun of the oil filling equipment to add oil to the oil supply tank 1. At least two oil supply tanks 1 are connected to the oil filling port through the air return pipe 82 to ensure the internal and external pressure balance of the oil supply tank 1 during oil filling. In addition, the oil filling port is provided with an oil filling port cover 81 with a compensation valve. The compensation valve is used to compensate the pressure of the oil supply tank 1, reducing the risk that the oil in one of the oil supply tanks 12 will collapse due to lack of air passage when flowing into one of the oil supply tanks 11.

[0063] Furthermore, at least two fuel supply tanks 1 are connected to fuel supply pumps 4, and each of the at least two fuel supply lines 3 is connected to one end of the main fuel supply line 31, and the other end of the main fuel supply line 31 is connected to the engine 5. This allows at least two fuel supply tanks 1 to supply fuel to the engine 5. In addition, a one-way valve 32 is provided on the fuel supply line 3 to ensure the reliability of the flow of fuel in the fuel supply tank 1 toward the engine 5. This also prevents fuel from flowing into the other fuel supply tank 12 when one fuel supply tank 11 is supplying fuel to the engine 5, which would cause insufficient fuel supply pressure. A fuel filter 33 is provided on the main fuel supply line 31. The fuel filter 33 is used to filter impurities, water and contaminants in the fuel to ensure that the fuel entering the engine 5 meets the cleanliness standards.

[0064] For example, as shown in the figure, two fuel tanks 1 can be configured to store fuel simultaneously, increasing the vehicle's fuel capacity and improving its range. Both fuel tanks 1 are connected to the engine via fuel supply lines 3, meaning both fuel tanks 1 can supply fuel to the engine. Furthermore, the two fuel tanks 1 are connected via vent lines 2. When the vent 21 is closed, the fuel pump 4 of one fuel tank 11 can draw fuel from the other fuel tank 12. This allows the fuel pump 4 to be drawn from the other fuel tank 12 even when one fuel tank 11 is empty but the pump 4 is functioning normally, or when the other fuel tank 12 has fuel but the pump 4 is faulty. In this case, the fuel in the other fuel tank 12 can be drawn into one fuel tank 11 to continue supplying fuel to the engine 5, enabling the vehicle to continue driving and improving user satisfaction.

[0065] Meanwhile, the fuel pumps 4 of the two fuel tanks 1 are respectively connected to the return oil lines 7. A three-way valve 72 is provided between one end of the two return oil lines 7 and one end of the main return oil line 71, and the other end of the main return oil line 71 is connected to the engine 5. This allows the engine 5 to return oil to the fuel tank 1 that is currently supplying fuel through the three-way valve 72, ensuring that the engine 5 can return oil to the fuel tank 1 that is currently supplying fuel, thereby reducing the risk of oil overflow from the fuel tank 1.

[0066] This utility model also proposes a vehicle.

[0067] The vehicle according to the present invention includes a fuel supply system 100 for an engine according to any of the above embodiments. By providing a dust cover 6, the vent 21 can be selectively opened or closed. A connecting structure 41 is provided at the fuel supply pump 4 of each fuel supply tank 1, so that when the vent 21 is closed, the fuel supply pump 4 of one fuel supply tank 11 can draw fuel from another fuel supply tank 12 through the corresponding connecting structure 41 and flow through the vent pipe 2 to the connecting structure 41 corresponding to the fuel supply pump 4 of one fuel supply tank 11, and enter one fuel supply tank 11. Therefore, when one fuel supply tank 11 is empty but the fuel supply pump 4 is functioning normally, while the other fuel supply tank 12 has fuel but the fuel supply pump 4 is damaged, the fuel from the other fuel supply tank 12 can be drawn into one fuel supply tank 11 to continue supplying fuel to the engine 5, allowing the vehicle to continue driving and improving user satisfaction.

[0068] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0069] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A fuel supply system for an engine, characterized in that, include: At least two fuel tanks (1) are connected to the engine (5) through fuel supply pipelines (3). Each fuel tank (1) is equipped with a fuel supply pump (4). The fuel supply pump (4) is used to drive the oil in the fuel tank (1) to flow to the engine (5) through the fuel supply pipelines (3). Vent pipe (2), at least two of the oil supply tanks (1) are connected to vent pipe (2), vent pipe (2) is provided with vent (21) connected to the outside, vent (21) can be selectively opened or closed, and the oil supply pump (4) of one of the oil supply tanks (11) can draw oil from the other oil supply tank (12) through vent pipe (2) when the vent (21) is closed.

2. The fuel supply system for the engine according to claim 1, characterized in that, It also includes a dust cover (6) connected to the vent (21) of the vent pipe (2), and the dust cover (6) is movable relative to the vent pipe (2) to selectively open or close the vent (21).

3. The fuel supply system for the engine according to claim 2, characterized in that, The dust cover (6) is placed over the vent (21), and a ventilation gap (65) is formed between the dust cover (6) and the peripheral wall of the vent (21). The dust cover (6) is constructed to be pressable relative to the vent pipe (2), and the dust cover (6) closes the ventilation gap (65) after being pressed relative to the vent pipe (2).

4. The fuel supply system for the engine according to claim 1, characterized in that, Each of the oil supply pumps (4) is provided with a connecting structure (41). The connecting structures (41) of at least two of the oil supply pumps (4) are respectively connected to the venting pipe (2). The oil supply pump (4) of one of the oil supply tanks (11) is adapted to draw oil from the other oil supply tank (12) through the corresponding connecting structure (41) and flow through the venting pipe (2) to the connecting structure (41) corresponding to the oil supply pump (4) of the oil supply tank (11), and enter the oil supply tank (11).

5. The fuel supply system for the engine according to claim 4, characterized in that, Each of the oil supply pumps (4) is provided with an oil inlet (42) and an oil outlet (43). The oil inlet (42) is connected to the oil supply tank (1), and the oil outlet (43) is connected to the oil supply pipeline (3). The connecting structure (41) is provided with a connecting inlet (411), a connecting outlet (412) and a pipe connection port (413). The connecting inlet (411) is connected to the oil supply tank (1), the pipe connection port (413) is connected to the vent pipe (2), and the connecting outlet (412) is configured to selectively connect to the oil inlet (42).

6. The fuel supply system for the engine according to claim 5, characterized in that, The connecting structure (41) includes an oil suction rod (414) and an oil suction pipe (415). The oil suction rod (414) is movably inserted into the oil supply tank (1). One end of the oil suction rod (414) extends outside the oil supply tank (1) and forms the pipe connection port (413). The other end of the oil suction rod (414) is connected to one end of the oil suction pipe (415) and forms the connecting outlet (412) at the connection. The other end of the oil suction pipe (415) forms the connecting inlet (411).

7. The fuel supply system for the engine according to claim 6, characterized in that, The oil suction rod (414) is constructed to be retractable relative to the oil supply tank (1). When the oil suction rod (414) is extended relative to the oil supply tank (1), the connecting outlet (412) is connected to the oil inlet (42), and when the oil suction rod (414) is retracted relative to the oil supply tank (1), the connecting outlet (412) and the oil inlet (42) are staggered.

8. The fuel supply system for the engine according to claim 6, characterized in that, The oil suction rod (414) is constructed as a rigid tube; And / or, the oil suction pipe (415) is constructed as a flexible pipe, and the connecting inlet (411) extends to the bottom wall inside the oil supply tank (1).

9. The fuel supply system for the engine according to claim 1, characterized in that, The ventilation pipeline (2) includes a main pipe section (22) and at least two branch sections (23). The at least two branch sections (23) are respectively connected to the oil supply pumps (4) of the at least two oil supply tanks (1). The at least two branch sections (23) are connected and are both connected to the main pipe section (22). The vent (21) is formed in the main pipe section (22).

10. A vehicle, characterized in that, The fuel supply system of the engine as described in any one of claims 1-9.

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