A motorcycle fuel tank pressure detection control system and detection control method thereof

Abstract

The present invention belongs to the technical field of motorcycle accessories, and particularly relates to a motorcycle oil tank pressure detection control system and a detection control method thereof, comprising an oil tank, an electrical unit and a detection unit, wherein the oil tank is provided with an oil tank cap and an air vent, and an adjustment unit and a driving unit are installed in the oil tank cap, wherein the driving unit controls the adjustment unit to open the air vent when power is on, and controls the adjustment unit to close the air vent when power is off, and the opening and closing of the air vent are adjusted by the adjustment unit, wherein the air vent is opened when the oil tank is supplied with oil, otherwise the air vent is closed, thereby effectively reducing the evaporation of the fuel in the oil tank and the pollution of the fuel, and wherein the air vent is opened when the motorcycle is started and powered on, otherwise the air vent is closed, and the automatic control is adopted to improve the convenience, and the detection unit is arranged to monitor the pressure in the oil tank and the electrical connection with the electrical unit, thereby ensuring that the safety can be effectively guaranteed when the air vent is closed, and the air vent is opened in time to slow down the pressure increase in the oil tank.

Description

Technical Field

[0001] The invention belongs to the technical field of motorcycle accessories, and in particular relates to a motorcycle oil tank pressure detection control system and a detection control method thereof. Background Art

[0002] When a motorcycle is in use, the fuel tank is the key part for fuel storage. Its performance and safety are crucial to the overall operating quality of the motorcycle and the safety of the user. Therefore, in order to ensure the balance of internal and external pressures when the motorcycle fuel tank is supplied with fuel, a vent hole is usually designed on the fuel tank to ensure smooth fuel supply and prevent fuel leakage or component damage caused by excessive internal pressure in the fuel tank.

[0003] However, the opening of the vent hole may cause evaporation of the fuel, and when the motorcycle is not in use and placed in a rainy environment, rainwater or moisture may easily penetrate into the vent hole and contaminate the fuel, which needs to be improved. Summary of the invention

[0004] The purpose of the present invention is to provide a motorcycle fuel tank pressure detection control system and a detection control method thereof in order to solve the above-mentioned technical problems, so as to achieve the effect of reducing fuel evaporation and pollution.

[0005] In view of this, the present invention provides a motorcycle fuel tank pressure detection and control system, comprising:

[0006] The fuel tank has a top wall with an installation cavity, a fuel tank cap installed in the installation cavity, and a refueling port and a vent hole in the installation cavity;

[0007] An electrical unit, which is mounted on a motorcycle and is used to supply power within the motorcycle;

[0008] A detection unit, which is mounted on the motorcycle and is used to monitor the pressure in the fuel tank;

[0009] An adjustment unit is installed in the fuel tank cap and is used to change the opening and closing of the vent hole;

[0010] The driving unit is mounted on the motorcycle and is used to control the regulating unit to open the vent when power is on, and to control the regulating unit to close the vent when power is off;

[0011] Wherein, the driving unit and the detecting unit are both electrically connected to the electrical unit.

[0012] In the above technical solution, further, the adjustment unit includes:

[0013] A valve body is formed in the fuel tank cap and is arranged corresponding to the vent hole. A first passage connecting the external environment and the vent hole is opened in the valve body, and an annular boss is formed on the inner wall of the first passage.

[0014] The valve core is installed in the valve body and can be sealed with the annular boss and is used for opening and closing the first channel;

[0015] A vent plug is coaxially arranged in the first channel and has a second channel opened inside;

[0016] The driving unit is used to drive the ventilation plug to pass through the annular boss to push open the valve core or pull back the valve core to reset it.

[0017] In the above technical solution, further, the adjustment unit also includes:

[0018] The guide rod is installed on the side of the annular boss away from the ventilation plug, and the valve core is provided with a through hole adapted to the guide rod.

[0019] In the above technical solution, further, the adjustment unit also includes:

[0020] The filter screen is sleeved on the valve core, and one end of the filter screen is connected to the surface of the valve core, and the other end of the filter screen is connected to the annular boss.

[0021] In the above technical solution, further:

[0022] The filter screen is in a cone or cylinder shape, and when the valve core is sealed with the annular boss, the cone or cylinder wall of the filter screen protrudes and bends radially away from the axis.

[0023] In the above technical solution, further:

[0024] The second passage includes an air inlet section axially opened in the ventilation plug and an air outlet section radially opened in the ventilation plug;

[0025] The air outlet section forms an air port on the surface of the ventilation plug, and the air port can correspond to the filter screen.

[0026] In the above technical solution, further, the ventilation plug includes:

[0027] The power end, the valve core is provided with a plug hole which forms a static friction fit with the surface of the power end, and the power end is used to carry the valve core to move, and when the valve core is pulled back to reset, it is separated from the valve core under the obstruction of the annular boss;

[0028] The main body is connected to the side of the power end away from the valve core.

[0029] In the above technical solution, further, the driving unit includes:

[0030] The electromagnet ring is installed on a side of the annular boss away from the valve core and is electrically connected to the electrical unit;

[0031] The common magnet ring is sleeved on the main body and is coaxially arranged with the electromagnet ring, and can move toward the electromagnet ring when the electromagnet ring is energized;

[0032] The spring is installed in the first channel, and its two ends are respectively connected to the main body and the valve body, and can pull the main body and the common magnet ring away from the electromagnet ring when the electromagnet ring is powered off.

[0033] In the above technical solution, further, the electrical unit includes:

[0034] An ignition module, installed in the motorcycle and used for ignition of the motorcycle;

[0035] A control module, installed in the motorcycle and used to receive feedback from the detection unit and the ignition module;

[0036] A battery module is installed in the motorcycle and is used to provide electrical energy;

[0037] The control module controls whether the battery module supplies power to the drive unit by receiving feedback from the detection unit and the ignition module.

[0038] The present invention provides a detection and control method for a motorcycle fuel tank pressure detection and control system, comprising the following steps:

[0039] S1: The motorcycle starts, the ignition module starts and feeds back an ignition signal to the control module, and the control module controls the battery module to supply power to the drive unit;

[0040] S2: The electromagnet ring generates magnetism due to power on, and then attracts the ordinary magnet ring, prompting the ordinary magnet ring to drive the ventilation plug to move;

[0041] S3: The power end of the vent plug is inserted into the socket for static friction fit and pushes the valve core open. At this time, the spring is stretched and the filter screen is extended;

[0042] S4: At this time, the vent hole is opened to ensure the pressure balance inside and outside the tank;

[0043] S5: When the motorcycle is turned off, the control module controls the battery module to stop supplying power to the drive unit;

[0044] S6: The battery iron ring loses its magnetism due to power failure, and the vent plug pulls the valve core to move toward the annular boss under the action of the spring restoring force;

[0045] S7: blocked by the annular boss, the power end is separated from the jack, and the valve core is sealed with the annular boss, the vent hole is closed, a sealed ring is formed in the oil tank, and the detection unit monitors the pressure in the oil tank;

[0046] S8: When the pressure in the fuel tank is abnormal, the detection unit box control module feeds back a pressure abnormality signal, and the control module controls the battery to supply power to the drive unit;

[0047] S9: Repeat S2-S4 until the control module receives a signal from the detection unit indicating that the pressure has returned to normal.

[0048] The beneficial effects of the present invention are:

[0049] 1. The opening and closing of the vent hole is adjusted by setting an adjustment unit. When the pressure inside and outside the fuel tank needs to be balanced, the vent hole is opened, otherwise the vent hole is closed, which effectively reduces the evaporation of the fuel in the fuel tank and the pollution of the fuel. The drive unit is electrically connected to the electrical unit in the motorcycle, and then when the motorcycle is started and powered on, the vent hole is opened, otherwise the vent hole is closed. Automatic control improves convenience, and a detection unit is set to monitor the pressure in the fuel tank and the electrical connection with the electrical unit, so that safety can be effectively guaranteed when the vent hole is closed to avoid excessive pressure in the fuel tank.

[0050] 2. By using a vent plug to push open the valve core or pull back the valve core to reset it, the opening and closing of the fuel tank vent hole can be effectively controlled to ensure that the fuel tank can be kept sealed when the motorcycle is not in use, that is, when the fuel tank does not need to be supplied with fuel, thereby reducing the evaporation and pollution of the fuel. The structure is simple, and the valve core can be easily maintained or replaced, which improves convenience.

[0051] 3. The setting of the guide rod can improve the stability of the valve core movement, and the filter can reduce the entry of impurities when the vent is opened, and can reduce the contamination of fuel when the vent is open;

[0052] 4. By turning on and off the power of the electromagnet ring, the switch can be made between adsorbing the ordinary magnet ring and stretching the spring and not adsorbing the ordinary magnet ring and being pulled back by the spring restoring force. The structure is simple and convenient. The battery module provides power and the control module receives the ignition signal or the pressure abnormality signal. The power on and off of the electromagnet ring can be effectively controlled, and the automatic control can ensure the control of the opening and closing of the vent. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a structural schematic diagram of the oil tank of the present invention;

[0054] Figure 2 is a cross-sectional view of the fuel tank cover of the present invention;

[0055] Figure 3 The present invention Figure 2 The enlarged view of point A in the middle;

[0056] Figure 4 is a schematic diagram of the regulating unit of the present invention when the vent hole is closed;

[0057] Figure 5 is a schematic diagram of the adjustment unit of the present invention when the vent hole is open;

[0058] Figure 6 is a circuit schematic diagram of the present invention;

[0059] The markings in the figure are as follows: 1. fuel tank; 2. fuel tank cap; 3. vent; 4. electrical unit; 40. ignition module; 41. control module; 42. battery module; 5. detection unit; 6. adjustment unit; 60. valve body; 61. first channel; 62. annular boss; 63. valve core; 630. socket; 64. ventilation plug; 640. power end; 641. main body; 65. second channel; 650. air intake section; 651. air port; 66. guide rod; 67. through hole; 68. filter; 7. drive unit; 70. electromagnet ring; 71. ordinary magnet ring; 72. spring. DETAILED DESCRIPTION

[0060] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0061] Embodiment 1:

[0062] This embodiment provides a motorcycle fuel tank pressure detection and control system, including:

[0063] A fuel tank 1, a top wall of which is provided with a mounting cavity, a fuel tank cap 2 is mounted in the mounting cavity, and a refueling port and a vent hole 3 are provided in the mounting cavity;

[0064] An electrical unit 4, mounted on the motorcycle and used for supplying power within the motorcycle;

[0065] A detection unit 5 is installed on the motorcycle and is used to monitor the pressure in the fuel tank 1;

[0066] The regulating unit 6 is installed in the fuel tank cover 2 and is used to change the opening and closing of the vent hole 3;

[0067] The driving unit 7 is installed on the motorcycle and is used to control the regulating unit 6 to open the vent 3 when the power is on, and to control the regulating unit 6 to close the vent 3 when the power is off;

[0068] Wherein, the driving unit 7 and the detection unit 5 are both electrically connected to the electrical unit 4;

[0069] Meanwhile, the fuel tank cap 2 usually needs to be opened or removed when refueling the fuel tank 1 through the refueling port, so the electrical connection between the drive unit 7 and the electrical unit 4 can adopt a contact-type electrical connection, that is, electrical contacts (not marked in the specification) are arranged at corresponding locations on the surface of the fuel tank cap 2 and the inner wall of the installation cavity, which is a conventional electrical connection method and will not be described in detail here;

[0070] The detection unit 5 may adopt a conventional pressure sensor, whose specific structure and installation position (not indicated in the specification) are all prior art, so as to detect the pressure in the oil tank 1 and provide feedback to the electrical unit 4, which will not be described in detail here.

[0071] It can be seen from the present embodiment that the opening and closing of the vent hole 3 is regulated by setting the adjustment unit 6. When the pressure inside and outside the fuel tank 1 needs to be balanced, the vent hole 3 is opened, otherwise the vent hole 3 is closed, which effectively reduces the evaporation of the fuel in the fuel tank 1 and the pollution of the fuel, and reduces the evaporation of the fuel, which can improve the efficiency of the fuel and improve the performance of the motorcycle to a certain extent.

[0072] The driving unit 7 is electrically connected to the electrical unit 4 in the motorcycle, so that when the motorcycle is started and powered on, the vent 3 is opened, and vice versa, the vent 3 is closed, and the convenience is improved by automated control. The detection unit 5 is set to detect the pressure in the fuel tank 1 and is also connected to the electrical unit 4, so that the safety can be effectively guaranteed when the vent 3 is closed, and the vent 3 can be opened in time to reduce the pressure increase in the fuel tank 1.

[0073] Embodiment 2:

[0074] This embodiment provides a motorcycle fuel tank pressure detection and control system, which, in addition to the technical solutions of the above embodiments, also has the following technical features. The adjustment unit 6 includes:

[0075] A valve body 60 is formed in the fuel tank cap 2 and is arranged corresponding to the vent hole 3. A first channel 61 connecting the external environment and the vent hole 3 is opened in the valve body 60, and an annular boss 62 is formed on the inner wall of the first channel 61;

[0076] The valve core 63 is installed in the valve body 60 and can be sealed with the annular boss 62 and is used for opening and closing the first channel 61;

[0077] The vent plug 64 is coaxially disposed in the first channel 61 and has a second channel 65 formed therein;

[0078] The driving unit 7 is used to drive the ventilation plug 64 to pass through the annular boss 62 to push open the valve core 63 or pull back the valve core 63 to reset;

[0079] At the same time, in order to improve the installation accuracy of the fuel tank cap 2 and ensure the corresponding arrangement of the first channel 61, the vent hole 3 and the contact-type electrical connection, the fuel tank cap 2 may also be provided with a cylindrical protrusion at the vent hole 3 and inserted into the vent hole 3, so that the vent hole 3, the cylindrical protrusion and the inside of the first channel 61 are all connected, and the two contacts of the contact-type electrical connection are conducted;

[0080] Furthermore, in order to further improve safety and prevent the valve core 63 from falling into the oil tank 1, a plug with a through hole may be provided on the inner wall of the cylindrical protrusion.

[0081] It can be seen from this embodiment that by using the vent plug 64 to push open the valve core 63 or pull back the valve core 63 to reset it, the opening and closing of the vent hole 3 of the fuel tank 1 can be effectively controlled, so that when the motorcycle is not in use, that is, when the fuel tank 1 is not needed for fuel supply, the fuel tank 1 can be kept in a sealed state, reducing the evaporation and pollution of the fuel. The structure is simple, and the valve core 63 can be easily maintained or replaced, thereby improving convenience.

[0082] Specifically, the tank cap 2 can be removed and the valve core 63 can be disassembled, which is easy to operate. In order to facilitate the disassembly of the ventilation plug 64, the tank cap 2 can also be composed of two parts, which is convenient for the maintenance and repair of the adjustment unit 6.

[0083] Embodiment 3:

[0084] This embodiment provides a motorcycle fuel tank pressure detection and control system, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and the adjustment unit 6 also includes:

[0085] The guide rod 66 is mounted on the side of the annular boss 62 away from the vent plug 64, and the valve core 63 is provided with a through hole 67 adapted to the guide rod 66;

[0086] The valve body 60 is provided with a mounting hole for inserting the guide rod 66 , and an interference fit can be adopted between the guide rod 66 and the mounting hole, while the valve core 63 is slidably connected to the guide rod 66 via the through hole 67 .

[0087] It can be seen from the present embodiment that the provision of the guide rod 66 can effectively improve the stability of the movement of the valve core 63, thereby ensuring the precise fit between the ventilation plug 64 and the valve core 63 and improving the accuracy.

[0088] Embodiment 4:

[0089] This embodiment provides a motorcycle fuel tank pressure detection and control system, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and the adjustment unit 6 also includes:

[0090] The filter screen 68 is sleeved on the valve core 63, and one end of the filter screen is connected to the surface of the valve core 63, and the other end of the filter screen is connected to the annular boss 62;

[0091] The two ends of the filter screen 68 are respectively connected to the valve core 63 and the annular boss 62 by bonding.

[0092] It can be seen from the present embodiment that the setting of the filter 68 can reduce the entry of impurities when the vent hole 3 is opened, and can reduce the risk of fuel contamination when the vent hole 3 is opened. In addition, the two ends are respectively connected to the valve core 63 and the annular boss 62, and can serve as a length control element to limit the movement range of the valve core 63 and ensure the coordination between the vent plug 64 and the valve core 63.

[0093] Embodiment 5:

[0094] This embodiment provides a motorcycle fuel tank pressure detection and control system, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0095] The filter screen 68 is conical or cylindrical, and when the valve core 63 is sealed with the annular boss 62, the conical or cylindrical wall of the filter screen 68 protrudes and bends radially away from the axis.

[0096] It can be seen from this embodiment that by adopting a conical or cylindrical filter screen 68 and three-dimensional filtering, the effective filtering area is greatly increased, the air flow efficiency is ensured, and the negative impact of the filter screen 68 on the air flow efficiency is reduced.

[0097] Embodiment 6:

[0098] This embodiment provides a motorcycle fuel tank pressure detection and control system, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0099] The second passage 65 includes an air inlet section 650 axially opened in the ventilation plug 64 and an air outlet section radially opened in the ventilation plug 64;

[0100] The air outlet section forms an air port 651 on the surface of the vent plug 64, and the air port 651 can correspond to the filter screen 68;

[0101] At the same time, multiple air ports 651 can be used, that is, they are opened at equal intervals around the circumference to ensure the air flow efficiency.

[0102] It can be seen from this embodiment that by setting the second channel 65 as an axial air inlet section 650 and a radial air outlet end, the influence of the vent plug 64 and the valve core 63 on the air flow channel when they are pushed together can be avoided, thereby ensuring the connection between the inside and outside of the oil tank 1 after the valve core 63 is pushed open and ensuring pressure balance.

[0103] Embodiment 7:

[0104] This embodiment provides a motorcycle fuel tank pressure detection and control system, which, in addition to the technical solutions of the above embodiments, also has the following technical features. The ventilation plug 64 includes:

[0105] The power end 640 is provided with a plug hole 630 on the valve core 63 to form a static friction fit with the surface of the power end 640, and the power end 640 is used to carry the valve core 63 to move, and when the valve core 63 is pulled back to reset, it is separated from the valve core 63 under the obstruction of the annular boss 62;

[0106] The main body 641 is connected to a side of the power end 640 away from the valve core 63;

[0107] Among them, an integrated structure is adopted between the power end 640 and the main body 641, and the static friction between the valve core 63 and the power end 640 is greater than the static friction between the valve core 63 and the annular boss 62. At the same time, the material of the surface of the power end 640 can be selected to improve the static friction, and specifically, rubber materials can be used.

[0108] It can be seen from this embodiment that through the cooperation between the power end 640 and the socket 630, when the vent hole 3 is opened, the two cooperate and push the valve core 63 to move. When the vent hole 3 needs to be closed, the power end 640 will pull the valve core 63 to move and make it seal with the annular boss 62 to ensure that the valve core 63 is pulled back to its original position.

[0109] Embodiment 8:

[0110] This embodiment provides a motorcycle fuel tank pressure detection and control system, which, in addition to the technical solutions of the above embodiments, also has the following technical features. The drive unit 7 includes:

[0111] The electromagnet ring 70 is installed on the side of the annular boss 62 away from the valve core 63 and is electrically connected to the electrical unit 4;

[0112] The common magnet ring 71 is sleeved on the main body 641 and is coaxially arranged with the electromagnet ring 70 and can move toward the electromagnet ring 70 when the electromagnet ring 70 is energized;

[0113] The spring 72 is installed in the first channel 61, and the two ends are connected to the main body 641 and the valve body 60 respectively, and can pull the main body 641 and the common magnet ring 71 away from the electromagnet ring 70 when the electromagnet ring 70 is powered off;

[0114] Among them, the adsorption force between the electromagnet ring 70 and the ordinary magnet ring 71 is much greater than the elastic potential energy of the stretched spring 72. Specifically, the sum of the force of the pressure in the oil tank 1 on the valve core 63 corresponding to the monitoring alarm threshold of the pressure in the oil tank 1 by the detection unit 5, the elastic potential energy of the stretched spring 72, and the static friction between the valve core 63 and the annular boss 62 is smaller than the adsorption force between the electromagnet ring 70 and the ordinary magnet ring 71.

[0115] At the same time, the elastic potential energy of the stretched spring 72 is greater than the static friction force between the valve core 63 and the power end 640 .

[0116] It can be seen from the present embodiment that the electromagnet ring 70 is switched between adsorbing the common magnet ring 71 and stretching the spring 72 and not adsorbing the common magnet ring 71 and being pulled back by the restoring force of the spring 72 by turning the power on and off. The structure is simple, can be automatically controlled, is convenient, and ensures the control of the opening and closing of the vent hole 3.

[0117] Embodiment 9:

[0118] This embodiment provides a motorcycle fuel tank pressure detection and control system, which, in addition to the technical solutions of the above embodiments, also has the following technical features. The electrical unit 4 includes:

[0119] An ignition module 40 is installed in the motorcycle and is used for ignition of the motorcycle;

[0120] A control module 41 is installed in the motorcycle and is used to receive feedback from the detection unit 5 and the ignition module 40;

[0121] A battery module 42 is installed in the motorcycle and is used to provide electrical energy;

[0122] The control module 41 controls whether the battery module 42 supplies power to the drive unit 7 by receiving feedback from the detection unit 5 and the ignition module 40;

[0123] At the same time, the control module 41 controls the battery module 42 to supply power to the drive unit 7 under the condition that the control module 41 receives at least one signal (ignition signal, pressure abnormality information);

[0124] Furthermore, the specific structures of the ignition module 40, the control module 41 and the battery module 42 are all prior art, and are all component modules of the conventional motorcycle electrical unit 4, and will not be described in detail here.

[0125] It can be seen from the present embodiment that power is supplied by the battery module 42 to ensure the power supply to the drive unit 7, and an ignition signal or a pressure abnormality signal or both signals are received by the control module 41 to control the battery module 42 to supply power to the drive unit 7, thereby effectively ensuring the opening of the vent hole 3, and ensuring the fuel supply and the stability of the pressure in the fuel tank 1.

[0126] Embodiment 10:

[0127] This embodiment provides a detection and control method for a motorcycle fuel tank pressure detection and control system, comprising the following steps:

[0128] S1: The motorcycle starts, the ignition module 40 starts and feeds back an ignition signal to the control module 41, and the control module 41 controls the battery module 42 to supply power to the drive unit 7;

[0129] S2: The electromagnet ring 70 generates magnetism due to power-on, and then attracts the common magnet ring 71, so that the common magnet ring 71 drives the ventilation plug 64 to move;

[0130] S3: The power end 640 of the ventilation plug 64 is inserted into the insertion hole 630 for static friction fit, and the valve core 63 is pushed open. At this time, the spring 72 is stretched and the filter screen 68 is stretched;

[0131] S4: At this time, the vent hole 3 is opened to ensure the pressure balance inside and outside the oil tank 1;

[0132] S5: When the motorcycle is turned off, the control module 41 controls the battery module 42 to stop supplying power to the drive unit 7;

[0133] S6: The battery iron ring loses its magnetism due to power failure, and the vent plug 64 pulls the valve core 63 to move toward the annular boss 62 under the action of the restoring force of the spring 72;

[0134] S7: blocked by the annular boss 62, the power end 640 is separated from the plug hole 630, and the valve core 63 is sealed with the annular boss 62, where the vent hole 3 is closed, a sealed ring is formed in the oil tank 1, and the detection unit 5 monitors the pressure in the oil tank 1;

[0135] S8: When the pressure in the oil tank 1 is abnormal, the detection unit 5 tank control module 41 feeds back a pressure abnormality signal, and the control module 41 controls the battery to supply power to the drive unit 7;

[0136] S9: Repeat S2-S4 until the control module 41 receives a signal from the detection unit 5 indicating that the pressure has returned to normal;

[0137] When the motorcycle is not started and the vent hole 3 is closed, the detection unit 5 detects abnormal pressure and opens the vent hole 3, and can also be electrically connected to an alarm device for warning.

[0138] It can be seen from this embodiment that the battery module 42 can adsorb or not adsorb the common magnet ring 71 by supplying power to the battery iron ring, thereby pushing the valve core 63 to open or reset under the action of the spring 72, and automatically adjusting the opening and closing of the ventilation, with a simple structure and good convenience;

[0139] When it is necessary to balance the pressure inside and outside the fuel tank 1, the vent hole 3 is opened, otherwise the vent hole 3 is closed, which effectively reduces the evaporation of the fuel in the fuel tank 1 and the pollution of the fuel. The drive unit 7 is electrically connected to the electrical unit 4 in the motorcycle, and then when the motorcycle is started and powered on, the vent hole 3 is opened, otherwise the vent hole 3 is closed, which is synchronized with the supply of fuel in the fuel tank 1 to ensure the stability of the fuel supply.

[0140] Furthermore, by providing a detection unit 5 to monitor the pressure in the fuel tank 1 and the electrical connection with the electrical unit 4, safety can be effectively guaranteed when the vent hole 3 is closed, and the vent hole 3 can be opened in time to reduce the pressure increase in the fuel tank 1.

[0141] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A motorcycle fuel tank pressure detection and control system, characterized in that: include: A fuel tank (1) having a mounting cavity on its top wall, a fuel tank cap (2) mounted in the mounting cavity, and a fuel filling port and a vent hole (3) disposed in the mounting cavity; An electrical unit (4) is mounted on the motorcycle and is used to supply power to the motorcycle; A detection unit (5) is mounted on the motorcycle and is used to monitor the pressure in the fuel tank (1); An adjustment unit (6) is installed in the fuel tank cover (2) and is used to change the opening and closing of the vent hole (3); A drive unit (7) is mounted on the motorcycle and is used to control the adjustment unit (6) to open the vent hole (3) when the ignition is powered on, and to control the adjustment unit (6) to close the vent hole (3) when the ignition is powered off; Wherein, the driving unit (7) and the detection unit (5) are both electrically connected to the electrical unit (4); Wherein, the adjustment unit (6) comprises: A valve body (60), wherein the fuel tank cover (2) is formed with a valve body (60) arranged corresponding to the vent hole (3), and a first channel (61) connecting the external environment and the vent hole (3) is opened in the valve body (60), and an annular boss (62) is formed on the inner wall of the first channel (61); A valve core (63) is installed in the valve body (60) and can be sealed with the annular boss (62) and is used for opening and closing the first channel (61); A vent plug (64) is coaxially disposed in the first channel (61) and has a second channel (65) formed therein; The driving unit (7) is used to drive the ventilation plug (64) to pass through the annular boss (62) to push open the valve core (63) or pull back the valve core (63) to reset; Wherein, the ventilation plug (64) comprises: A power end (640), wherein the valve core (63) is provided with a plug hole (630) which forms a static friction fit with the surface of the power end (640), and the power end (640) is used to carry the valve core (63) to move, and when the valve core (63) is pulled back to reset, it is separated from the valve core (63) under the obstruction of the annular boss (62); A main body (641) connected to a side of the power end (640) away from the valve core (63); Wherein, the driving unit (7) comprises: An electromagnet ring (70) is mounted on a side of the annular boss (62) away from the valve core (63) and is electrically connected to the electrical unit (4); A common magnet ring (71) is sleeved on the main body (641) and is coaxially arranged with the electromagnet ring (70), and is capable of moving toward the electromagnet ring (70) when the electromagnet ring (70) is energized; The spring (72) is installed in the first channel (61) and has two ends connected to the main body (641) and the valve body (60) respectively. When the electromagnet ring (70) is powered off, the spring (72) can pull the main body (641) and the common magnet ring (71) away from the electromagnet ring (70).

2. The motorcycle fuel tank pressure detection and control system according to claim 1, characterized in that: The regulating unit (6) further comprises: The guide rod (66) is mounted on a side of the annular boss (62) away from the vent plug (64), and the valve core (63) is provided with a through hole (67) adapted to the guide rod (66).

3. The motorcycle fuel tank pressure detection and control system according to claim 1, characterized in that: The regulating unit (6) further comprises: The filter screen (68) is sleeved on the valve core (63), one end of which is connected to the surface of the valve core (63) and the other end of which is connected to the annular boss (62).

4. The motorcycle fuel tank pressure detection and control system according to claim 3, characterized in that: The filter screen (68) is conical or cylindrical, and when the valve core (63) and the annular boss (62) are in sealing engagement, the conical or cylindrical wall of the filter screen (68) protrudes and bends radially away from the axis.

5. The motorcycle fuel tank pressure detection and control system according to claim 3, characterized in that: The second channel (65) comprises an air inlet section (650) axially opened in the ventilation plug (64) and an air outlet section radially opened in the ventilation plug (64); The air outlet section forms an air port (651) on the surface of the ventilation plug (64), and the air port (651) can correspond to the filter screen (68).

6. The motorcycle fuel tank pressure detection and control system according to claim 1, characterized in that: The electrical unit (4) comprises: An ignition module (40) is installed in the motorcycle and is used for ignition of the motorcycle; A control module (41) is installed in the motorcycle and is used to receive feedback from the detection unit (5) and the ignition module (40); A battery module (42) is installed in the motorcycle and is used to provide electrical energy; The control module (41) controls whether the battery module (42) supplies power to the drive unit (7) by receiving feedback from the detection unit (5) and the ignition module (40).

7. A detection and control method applied to the motorcycle fuel tank pressure detection and control system according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1: The motorcycle is started, the ignition module (40) is started and feeds back an ignition signal to the control module (41), and the control module (41) controls the battery module (42) to supply power to the drive unit (7); S2: The electromagnet ring (70) generates magnetism due to power supply, and then attracts the common magnet ring (71), so that the common magnet ring (71) drives the ventilation plug (64) to move; S3: The power end (640) of the ventilation plug (64) is inserted into the insertion hole (630) for static friction fit, and the valve core (63) is pushed open. At this time, the spring (72) is stretched and the filter screen (68) is extended; S4: At this time, the vent hole (3) is opened to ensure that the pressure inside and outside the oil tank (1) is balanced; S5: When the motorcycle is turned off, the control module (41) controls the battery module (42) to stop supplying power to the drive unit (7); S6: The battery iron ring loses its magnetism due to power failure, and the vent plug (64) pulls the valve core (63) to move toward the annular boss (62) under the action of the restoring force of the spring (72); S7: blocked by the annular boss (62), the power end (640) is separated from the plug hole (630), and the valve core (63) is sealed with the annular boss (62), the vent hole (3) is closed, a sealed ring is formed in the oil tank (1), and the detection unit (5) monitors the pressure in the oil tank (1); S8: When the pressure in the oil tank (1) is abnormal, the detection unit (5) feeds back a pressure abnormality signal to the tank control module (41), and the control module (41) controls the battery to supply power to the drive unit (7); S9: Repeat S2-S4 until the control module (41) receives a signal from the detection unit (5) indicating that the pressure has returned to normal.

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