An oil port test device for a fuel tank with controllable oil and gas

Abstract

The present invention relates to a fuel tank oil port test device with controllable oil and gas, which is different in that it includes a pipe body with both ends penetrating. The lumen of the pipe body is configured as an oil injection channel. The two end ports of the pipe body are respectively configured as the inlet and outlet of the oil injection channel. The outlet of the oil injection channel is inserted into the fuel tank, and a flange for connecting the fuel tank is formed on the outer periphery of the pipe body; a baffle plate, which is cylindrical, is arranged on the outer periphery of the pipe body, and the baffle plate can move axially along the pipe body to adjust the fuel injection length; and a cover plate, which is used to open and close the outlet, and the maximum opening angle of the cover plate is adjustable to adjust the fuel injection angle. The present invention is convenient to use, can achieve controllable oil and gas, reduces the development cost, and saves the test time.

Description

Technical Field

[0001] The present invention relates to the field of automotive fuel tanks, and particularly to a test device for the fuel tank oil port with controllable oil and gas. Background Art

[0002] During refueling, fuel sequentially passes through the fuel pipe and the oil port and enters the fuel tank.

[0003] Therefore, in order to ensure the smoothness of the refueling of the automotive fuel system, prevent abnormal phenomena such as early nozzle cut-off, splashing, and backspray during refueling, and at the same time meet the requirements of the national VI refueling emissions, it is necessary to add an oil port with good sealing performance and good flow guiding effect inside the fuel tank.

[0004] Furthermore, in order to meet the requirements of the national VI refueling emissions, it is necessary to minimize the inner diameter of the fuel tank fuel pipe as much as possible to prevent oil and gas from overflowing during refueling. However, when the fuel pipe becomes thinner, abnormal phenomena such as nozzle cut-off, splashing, and backspray during refueling will occur. Especially for export projects, there are many types of fuel nozzles, the body environment is becoming more and more compact, the designed fuel pipe path is becoming more and more complex, and the matching oil port design is becoming more and more difficult. It is getting more and more difficult to pass the refueling performance at one time, which increases the development cost and the test cycle. Summary of the Invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a test device for the fuel tank oil port with controllable oil and gas, which is convenient to use, can achieve controllable oil and gas, reduces the development cost, and saves the test time.

[0006] To solve the above technical problems, the technical solution of the present invention is as follows: A test device for the fuel tank oil port with controllable oil and gas, which is different in that:

[0007] It includes a tube body with both ends penetrating, the lumen of the tube body is configured as an oil injection channel, the two end ports of the tube body are respectively configured as the inlet and outlet of the oil injection channel, the outlet of the oil injection channel is inserted into the fuel tank, and a flange for connecting the fuel tank is formed on the outer periphery of the tube body;

[0008] A baffle plate, in a cylindrical shape, is arranged on the outer periphery of the tube body, and the baffle plate can move axially along the tube body to adjust the fuel injection length;

[0009] And

[0010] A cover plate, used to open and close the outlet, and the maximum opening angle of the cover plate is adjustable to adjust the fuel injection angle.

[0011] According to the above technical solution, it further includes a cylindrical bracket, the bracket is sleeved on the outer periphery of the tube body, and the baffle plate and the cover plate are connected to the bracket.

[0012] According to the above technical solution, the bracket is detachably connected to the pipe body.

[0013] According to the above technical solution, the bracket is snap-fitted and fixed to the pipe body.

[0014] According to the above technical solution, it further includes a first adjusting bolt extending along the axial direction of the pipe body. The first adjusting bolt is threadedly connected to the bracket and rotatably connected to the baffle. When the first adjusting bolt is turned, the baffle can move axially along the pipe body.

[0015] According to the above technical solution, an assembly convex portion restricted on the first adjusting bolt is formed on the outer side of the baffle. The assembly convex portion is sleeved on the first adjusting bolt, and one end thereof abuts against the first adjusting bolt and the other end abuts against a first retaining spring stuck on the first adjusting bolt.

[0016] According to the above technical solution, the cover plate is connected to the bracket through a rotating shaft fixed thereto, and a torsion spring for driving the cover plate to close is sleeved on the rotating shaft.

[0017] According to the above technical solution, a positioning boss is formed on the rotating shaft. The device further includes a second adjusting bolt extending along the axial direction of the pipe body. The second adjusting bolt is threadedly connected to the bracket, and an adjusting block capable of rotating relative to the second adjusting bolt is sleeved on the second adjusting bolt. The adjusting block is used to limit the maximum opening angle of the cover plate and has a positioning surface capable of abutting against the positioning boss. When the second adjusting bolt is turned, the adjusting block can move axially along the pipe body.

[0018] According to the above technical solution, the adjusting block is restricted on the second adjusting bolt, and one end of the adjusting block abuts against the second adjusting bolt and the other end abuts against a second retaining spring stuck on the second adjusting bolt.

[0019] According to the above technical solution, a sealing gasket cooperating with the oil outlet is formed on the cover plate.

[0020] Compared with the prior art, the beneficial features of the present invention are as follows: The fuel tank oil port test device with controllable oil and gas is convenient to use. The fuel injection length can be adjusted by moving the baffle axially along the pipe body, and the fuel injection angle can be adjusted by adjusting the maximum opening angle of the cover plate. When a fuel filling test is performed on the fuel tank, the fuel injection angle and injection length of the fuel entering the fuel tank can be changed, and the path of the fuel impacting the inner wall of the fuel tank can be altered, thereby reducing the generation of fuel vapor inside the fuel tank, achieving controllable oil and gas, solving the problem of the first fuel filling nozzle jump of a new fuel tank, allowing adjustment during the test, adjusting to the optimal position and then guiding the mold opening, saving test time, improving the one-time success rate, and saving development costs. Description of the Drawings

[0021] Figure 1 Schematic diagram of the closed state structure of the cover plate of the fuel tank oil port test device with controllable oil and gas in the embodiment of the present invention;

[0022] Figure 2 is Figure 1 the left view of;

[0023] Figure 3 is Figure 1 the right view of;

[0024] Figure 4 is Figure 3 the A-A cross-sectional view of;

[0025] Figure 5 is Figure 4 the enlarged view of the partial B structure of;

[0026] Figure 6 Schematic diagram of a kind of open state structure of the cover plate of the fuel tank oil port test device with controllable oil and gas in the embodiment of the present invention;

[0027] Figure 7 is Figure 6 the left view of;

[0028] Figure 8 is Figure 6 the right view of;

[0029] Figure 9 is Figure 8 the C-C cross-sectional view of;

[0030] Figure 10 is Figure 9 the enlarged view of the partial D structure of;

[0031] Figure 11 Schematic diagram of a kind of open state structure of the cover plate of the fuel tank oil port test device with controllable oil and gas in the embodiment of the present invention;

[0032] Figure 12 is Figure 11 the enlarged view of the partial E structure of;

[0033] Figure 13 is Figure 11 the left view of;

[0034] Figure 14 is Figure 11 the right view of;

[0035] Figure 15 is Figure 14 the F-F cross-sectional view of;

[0036] Figure 16 is Figure 15 the enlarged view of the partial G structure of;

[0037] Figure 17 This is a three-dimensional structural schematic diagram of the fuel tank oil port test device with controllable oil and gas for the embodiments of the present invention;

[0038] Figure 18 This is a connection diagram of the fuel tank oil port test device with controllable oil and gas in one embodiment of the present invention to the fuel tank and the fuel filling pipe;

[0039] Figure 19 is Figure 18 a partial enlarged view of the H structure;

[0040] Figure 20 This is a connection diagram of the fuel tank oil port test device with controllable oil and gas in another embodiment of the present invention to the fuel tank and the fuel filling pipe;

[0041] Figure 21 is Figure 20 a partial enlarged view of the I structure;

[0042] Wherein: 1 - pipe body (1a - oil inlet end, 1b - oil outlet end, 101 - oil injection channel, 102 - oil inlet, 103 - oil outlet, 104 - buckle, 105 - positioning rib), 2 - baffle plate (201 - assembly convex part (2011 - assembly hole)), 3 - cover plate (α - maximum opening angle of the cover plate, 301 - sealing gasket, 302 - diversion groove), 4 - flange (401 - alignment mark), 5 - bracket (5a - clamping end, 501 - assembly cavity, 502 - clamping hole, 503 - elastic deformation notch, 504 - clamping part, 505 - limiting surface, 506 - connecting part, 507 - limiting surface), 6 - first adjusting bolt (601 - smooth rod section, 602 - threaded rod section, 603 - interface, 604 - clamping groove), 7 - first snap ring, 8 - rotating shaft (801 - positioning boss), 9 - torsion spring, 10 - second adjusting bolt (1001 - smooth rod section, 1002 - threaded rod section, 1003 - interface, 1004 - clamping groove), 11 - adjusting block (1101 - assembly hole, 1102 - positioning surface), 12 - second snap ring, 13 - sealing ring, 14 - fuel tank, 15 - fuel filling pipe, 16 - rubber hose, 17 - oil pump. Detailed implementation manners

[0043] The present invention will be further described in detail below in conjunction with the accompanying drawings through specific implementation manners.

[0044] Please refer to Figures 1 to 21, the oil port test device for fuel tanks with controllable oil and gas in the embodiments of the present invention is used to simulate the oil port of the fuel tank 14. The oil port test device for fuel tanks with controllable oil and gas in the embodiments of the present invention includes a pipe body 1, a baffle 2 and a cover plate 3. The two ends of the pipe body 1 are through, and the pipe body 1 has a pipe cavity and ports at both ends of the pipe cavity. The pipe cavity of the pipe body 1 is configured as an oil injection channel 101, one port of the pipe body 1 is the oil inlet 102 of the oil injection channel 101, the other port of the pipe body 1 is the oil outlet 103 of the oil injection channel 101, the oil inlet 102 is located at the oil inlet end 1a of the pipe body 1, the oil outlet 103 is located at the oil outlet end 1b of the pipe body 1, the oil inlet end 1a of the pipe body 1 is docked with the fuel filling pipe 15, and the oil outlet end 1b of the pipe body 1 extends into the fuel tank 14. A flange 4 that cooperates with the fuel tank 14 is fixedly formed on the outer periphery of the pipe body 1. The baffle 2 is in a cylindrical shape and can gather fuel. The baffle 2 is movably sleeved on the outer periphery of the pipe body 1 and is located at the oil outlet end 1b of the pipe body 1. The baffle 2 can move axially along the pipe body 1 to adjust the fuel injection length. The cover plate 3 is used to open and close the oil outlet 103, and the maximum opening angle α of the cover plate 3 is adjustable to adjust the fuel injection angle.

[0045] Specifically, the oil port test device for fuel tanks with controllable oil and gas in the embodiments of the present invention further includes a cylindrical bracket 5. The bracket 5 is sleeved outside the pipe body 1, and the bracket 5 is located at the oil outlet end 1b of the pipe body 1. The bracket 5 is in a hollow shape, and an assembly cavity 501 that cooperates with the pipe body 1 is provided on the bracket 5. Both ends of the assembly cavity 501 are open. The baffle 2 and the cover plate 3 are installed on the bracket 5.

[0046] Preferably, the bracket 5 and the pipe body 1 are detachably connected, which is convenient for replacing the pipe body 1 with different length dimensions according to needs.

[0047] In a most preferred embodiment of the present invention, the bracket 5 and the pipe body 1 are fixedly connected by clamping. A plurality of buckles 104 are provided on the outer periphery of the pipe body 1, and clamping holes 502 that correspond to and cooperate with the buckles 104 are provided on the bracket 5. One end of the bracket 5 provided with the clamping holes is the clamping end 5a of the bracket 5. For the convenience of clamping, a plurality of elastic deformation notches 503 are provided at the clamping end 5a of the bracket 5. The elastic deformation notches 503 are evenly spaced along the port of the clamping end 5a of the pipe body to divide the port of the clamping end 5a of the bracket 5 into a plurality of clamping parts 504, and clamping holes 502 are respectively provided on each clamping part 504. For the convenience of quickly and accurately docking the bracket 5 and the pipe body 1, a positioning edge 105 that cooperates with the elastic deformation notch 503 is formed on the pipe body 1.

[0048] Preferably, to facilitate the movement of the baffle 2 and ensure that the baffle 2 can be fixed to the pipe body 1 after moving into place, the oil port test device for an oil and gas controllable fuel tank according to an embodiment of the present invention further includes a first adjusting bolt 6 extending along the axial direction of the pipe body 1. The first adjusting bolt 6 is threadedly connected to the bracket 5, and the first adjusting bolt 6 is rotatably connected to the baffle 2. When the first adjusting bolt 6 is screwed, the baffle 2 can move axially along the pipe body 1, facilitating the adjustment of the length of the baffle 2, so as to control the length of the liquid column injection during fuel filling. Specifically, the first adjusting bolt 6 is axially divided into a smooth rod section 601 and a threaded rod section 602, wherein the diameter of the smooth rod section 601 is smaller than that of the threaded rod section 602. A demarcation surface 603 is formed between the smooth rod section 601 and the threaded rod section 602, and a card slot 604 extending circumferentially along the smooth rod section 601 is provided at the end close to the smooth rod section 601. The card slot 604 cooperates with the first snap ring 7. An assembly convex portion 201 protruding outward relative to the baffle 2 is fixedly formed on the outer side of the baffle 2. An assembly hole 2011 for cooperating with the smooth rod section 601 of the first adjusting bolt is provided on the assembly convex portion 201. The assembly convex portion 201 is sleeved and restricted on the first adjusting bolt 6. One end of the assembly convex portion 201 abuts against the demarcation surface 603 of the first adjusting bolt 6, and the other end of the assembly convex portion 201 abuts against the first snap ring 7 stuck in the card slot 604 of the first adjusting bolt 6. To prevent the baffle 2 from rotating when the first adjusting bolt 6 is screwed, a limiting surface 505 cooperating with the baffle 2 is provided on the outer periphery of the bracket 5.

[0049] Preferably, the cover plate 3 is connected to the bracket 5 through a rotating shaft 8. The rotating shaft 8 is fixed to the cover plate 3, and a connecting portion 506 for rotatably connecting with the rotating shaft 8 is formed on the bracket 5. The connecting portion 506 is sleeved on the rotating shaft 8. In order to ensure that the cover plate 3 can return in time after being opened, a torsion spring 9 for driving the cover plate 3 to close is sleeved on the rotating shaft 8. More preferably, in order to facilitate the adjustment of the maximum opening angle α of the cover plate 3, a positioning boss 801 is fixedly formed on the rotating shaft 8. The device further includes a second adjusting bolt 10 extending along the axial direction of the pipe body 1. The second adjusting bolt 10 is threadedly connected to the bracket 5. An adjusting block 11 capable of rotating relative to the second adjusting bolt 10 is sleeved on the second adjusting bolt 10. The adjusting block 11 is used to limit the maximum opening angle α of the cover plate 3. The adjusting block 11 has a positioning surface 1102 capable of abutting against the positioning boss 801. When the cover plate 3 is opened to the maximum angle, the positioning boss 801 abuts against the positioning surface 1102, so that the cover plate 3 cannot be opened to a larger angle. When the second adjusting bolt 10 is screwed, the adjusting block 11 can move along the axial direction of the pipe body 1, so that the positioning surface 1102 moves along the axial direction of the pipe body 1, thereby adjusting the maximum opening angle α of the cover plate 3. Specifically, the second adjusting bolt 10 is axially divided into a smooth rod section 1001 and a threaded rod section 1002. The diameter of the smooth rod section 1001 is smaller than that of the threaded rod section 1002. A demarcation surface 1003 is formed between the smooth rod section 1001 and the threaded rod section 1002, and a card slot 1004 extending along the circumferential direction of the smooth rod section 1001 is opened at the end close to the smooth rod section 1001. The card slot 1004 cooperates with the second retaining ring 12. An assembly hole 1101 for cooperating with the smooth rod section 1001 of the second adjusting bolt is opened on the adjusting block 11. The adjusting block 11 is sleeved and restricted on the second adjusting bolt 10. One end of the adjusting block 11 abuts against the demarcation surface 1003 of the second adjusting bolt 10, and the other end of the adjusting block 11 abuts against the second retaining ring 12 stuck in the card slot 1004 of the second adjusting bolt 10. In order to prevent the adjusting block 11 from rotating when the second adjusting bolt 10 is screwed, the bracket 5 has a limiting surface 507 that always abuts against the adjusting block 11. The limiting surface 507 extends along the axial direction of the pipe body 1.

[0050] The maximum opening angle α of the cover plate 3 can be adjusted within the range of 0° to 90°. When the second adjusting bolt 10 is not screwed out, the maximum opening angle α of the cover plate 3 is the largest, which is 90°. When the second adjusting bolt 10 is screwed out until the cover plate 3 cannot be opened, the maximum opening angle α of the cover plate 3 is the smallest, which is 0°.

[0051] Please refer to Figures 1 to 10 , in this state, the second adjusting bolt 10 is not screwed out, and the maximum opening angle α of the cover plate 3 is 90°. Among them, please refer to Figures 1 to 5 , at this time, the cover plate 3 is in the closed state. Please refer to Figures 6 to 10 , at this time, the cover plate 3 is opened to the maximum opening angle, that is, 90°.

[0052] Please refer toFigures 11 to 16 In this state, the second adjusting bolt 10 is partially screwed out, and the cover plate 3 is opened to the maximum opening angle. However, at this time, the maximum opening angle α of the cover plate 3 is smaller than that in the state shown in Figures 1 to 10 the figure.

[0053] Preferably, a sealing gasket 301 that cooperates with the oil outlet 103 is formed on the cover plate 3. More preferably, the sealing gasket 301 is integrally injection-molded with the cover plate 3, and has a good sealing effect, which can block the oil and oil and gas inside the fuel tank 14 within the fuel tank 14.

[0054] Preferably, a diversion groove 302 is formed on one side of the cover plate 3 facing the oil outlet 103, so that the fuel enters the fuel tank 14 more smoothly.

[0055] Specifically, in some embodiments, the flange 4 is fixedly welded to the fuel tank 14. In other embodiments, the flange 4 is assembled and connected to the fuel tank 14. A sealing ring installation groove is provided on the welding surface of the flange 4 for assembling the O-ring 13. When the flange 4 is fixedly welded to the fuel tank 14, the sealing ring 13 does not need to be assembled. When the flange 4 is assembled and connected to the fuel tank 14, assembling the O-ring 13 can achieve a better sealing effect. Preferably, alignment marks are provided on the fuel tank 14. In order to facilitate accurate docking with the fuel tank 14, an alignment mark 401 is provided on the flange 4 to facilitate ensuring the correctness of the position during the assembly of the oil port.

[0056] The oil port test device of the fuel tank with controllable oil and gas in the embodiment of the present invention can be used in cooperation with both the metal fuel filling pipe 15 and the plastic fuel filling pipe 15.

[0057] Please refer to Figure 18 and Figure 19 , in which a partial section is made at the connection between the fuel tank 14 and the test device. In the embodiment shown in the figure, the fuel filling pipe 15 can be either a plastic fuel filling pipe or a metal fuel filling pipe. After the flange of the test device is connected to the fuel tank 14, the oil outlet end 1b of the pipe body 1 and the fuel filling pipe 15 are connected through a rubber hose 16.

[0058] Please refer to Figure 20 and Figure 21 , in which a partial section is made at the connection between the fuel tank 14 and the test device. In the embodiment shown in the figure, the fuel filling pipe 15 is a plastic fuel filling pipe. After the flange of the test device is connected to the fuel tank 14, the fuel filling pipe 15 is welded to the fuel tank 14.

[0059] The oil pump 17 is detachably connected to the fuel tank 14. When it is inconvenient to disassemble after the fuel tank 14, the test device and the fuel filling pipe 15 are connected, the oil pump 17 on the fuel tank 14 can be removed, and then the tester can reach into the fuel tank 14 through the oil pump installation opening of the fuel tank 14 to adjust the first adjusting bolt 6 and the second adjusting bolt 10 of the test device.

[0060] In order to facilitate the observation of the fuel injection state, a transparent observation window is provided on the fuel tank 14.

[0061] The oil port test device of the fuel tank with controllable oil and gas in the embodiment of the present invention has a compact structure and can be applied to fuel tanks 14 with different shapes and different materials. To achieve a rapid verification effect, the oil port test device of the fuel tank with controllable oil and gas in the embodiment of the present invention can be made of engineering plastics or metal materials.

[0062] For the oil port test device of the fuel tank with controllable oil and gas in the embodiment of the present invention, when a fuel filling test is performed on the fuel tank 14, the fuel injection length into the fuel tank 14 can be changed by adjusting the first adjusting bolt 6, and the fuel injection angle into the fuel tank 14 can be changed by adjusting the second adjusting bolt 10. The two cooperate with each other to change the path of the fuel impacting the inner wall of the fuel tank 14, thereby reducing the generation of fuel vapor inside the fuel tank 14 and solving the problem of the fuel nozzle jumping during the first refueling of the new fuel tank 14. The fuel injection length and the injection angle can be adjusted while the test is being carried out. After adjusting to the optimal position to make the path of the fuel flowing into the fuel tank 14 optimal and the generated oil and gas the least, the mold opening can be guided. The oil port test device of the fuel tank with controllable oil and gas in the embodiment of the present invention can be adjusted quickly and verified rapidly. It can effectively save the test time, improve the one-time success rate, and save the development cost.

[0063] The above content is a further detailed description of the present invention in combination with specific implementation manners. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, which should all be regarded as belonging to the protection scope of the present invention.

Claims

1. An oil port test device for a fuel tank with controllable oil and gas, characterized in that: It includes a tube body with both ends penetrating. The lumen of the tube body is configured as an oil injection channel. The two end ports of the tube body are respectively configured as the inlet and outlet of the oil injection channel. The outlet of the oil injection channel is inserted into the fuel tank, and a flange for connecting the fuel tank is formed on the outer periphery of the tube body; A baffle plate, in a cylindrical shape, is arranged on the outer periphery of the tube body. The baffle plate can move axially along the tube body to adjust the fuel injection length; And A cover plate, used to open and close the outlet. The maximum opening angle of the cover plate is adjustable to adjust the fuel injection angle; It further includes a cylindrical bracket. The bracket is sleeved on the outer side of the tube body, and the baffle plate and the cover plate are connected to the bracket; It further includes a first adjusting bolt extending axially along the tube body. The first adjusting bolt is threadedly connected to the bracket and is rotatably connected to the baffle plate. When the first adjusting bolt is turned, the baffle plate can move axially along the tube body; An assembly convex portion is formed on the outer side of the baffle plate and is restricted on the first adjusting bolt. The assembly convex portion is sleeved on the first adjusting bolt, and one end of it abuts against the first adjusting bolt, and the other end abuts against a first snap ring stuck on the first adjusting bolt.

2. The fuel tank oil port test device with controllable oil and gas as described in claim 1, wherein: The bracket is detachably connected to the tube body.

3. The fuel tank oil port test device with controllable oil and gas as described in claim 2, wherein: The bracket is fixedly connected to the tube body by clamping.

4. The fuel tank oil port test device with controllable oil and gas as described in claim 1, characterized in that: The cover plate is connected to the bracket through a rotating shaft fixed to it, and a torsion spring for driving the cover plate to close is sleeved on the rotating shaft.

5. The fuel tank oil port test device with controllable oil and gas as described in claim 4, characterized in that: A positioning boss is formed on the rotating shaft. The device further includes a second adjusting bolt extending axially along the tube body. The second adjusting bolt is threadedly connected to the bracket, and an adjusting block that can rotate relative to the second adjusting bolt is sleeved on the second adjusting bolt. The adjusting block is used to limit the maximum opening angle of the cover plate and has a positioning surface that can abut against the positioning boss. When the second adjusting bolt is turned, the adjusting block can move axially along the tube body.

6. The fuel tank oil port test device with controllable oil and gas as described in claim 5, characterized in that: The adjusting block is restricted on the second adjusting bolt. One end of the adjusting block abuts against the second adjusting bolt, and the other end abuts against a second snap ring stuck on the second adjusting bolt.

7. The fuel tank oil port test device with controllable oil and gas as described in claim 1, characterized in that: A sealing gasket matching the outlet is formed on the cover plate.

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