A carbon canister gasoline workability test system

Abstract

The application provides a gasoline working capacity test system for a carbon tank. The system comprises an oil vapor tank body, a gasoline supply assembly for supplying gasoline into the oil vapor tank body, a carbon tank body for adsorbing gasoline vapor, a first pipeline for connecting the oil vapor tank body and the carbon tank body, a first branch pipeline connected with the first pipeline, a nitrogen supply assembly for supplying nitrogen into the first branch pipeline, and a switch assembly for controlling the flow of nitrogen and gasoline vapor. In use, gasoline is converted into gasoline vapor by an oil vapor generating assembly in the oil vapor tank body, and the gasoline vapor is supplied into the first pipeline through a first vapor outlet. The nitrogen supply assembly supplies nitrogen into the first pipeline through the first branch pipeline. The nitrogen and the gasoline vapor are mixed and then enter the carbon tank body. The application can control the proportion of nitrogen and gasoline vapor entering the carbon tank body through the switch assembly, thereby solving the problem of inaccurate nitrogen and gasoline vapor ratio.

Description

Technical Field

[0001] This application relates to the field of charcoal canister testing technology, specifically to a charcoal canister gasoline working capacity testing system. Background Technology

[0002] Current charcoal canister gasoline performance testing systems introduce nitrogen into the gasoline vapor tank that generates gasoline vapor, and then introduce a mixture of nitrogen and gasoline vapor into the charcoal canister to simulate automotive applications. However, the ratio of gasoline vapor to nitrogen introduced into the charcoal canister cannot be accurately controlled, resulting in inaccurate simulation of automotive applications and consequently, inaccurate testing of the gasoline performance of automotive charcoal canisters. Summary of the Invention

[0003] In view of the above-mentioned defects or deficiencies in the prior art, this application aims to provide a charcoal canister gasoline working capacity testing system, comprising:

[0004] The oil vapor tank has a first cavity inside and a first steam outlet at the top. The oil vapor tank is equipped with an oil vapor generating assembly, which is used to convert gasoline into gasoline vapor and discharge it from the first steam outlet.

[0005] A fuel supply assembly, which is connected to the first cavity, is used to supply gasoline into the first cavity;

[0006] The charcoal canister body has a first steam inlet at the top that communicates with the first steam outlet, and an adsorption component inside that is used to adsorb gasoline vapor.

[0007] The first pipeline is connected to the first steam outlet and the first steam inlet at its two ends, and a first branch pipeline is provided on the first pipeline.

[0008] A nitrogen supply assembly is connected to the first branch pipeline and is used to introduce nitrogen into the first pipeline. The nitrogen and gasoline vapor are mixed and then enter the charcoal canister body through the first steam inlet.

[0009] A switching assembly for regulating the flow rate of gasoline vapor and nitrogen entering the first pipeline.

[0010] According to the technical solution provided in the embodiments of this application, the oil vapor generating component includes a rotatable stirring component. When the stirring component rotates, it causes the gasoline in the first cavity to rotate in a preset direction, generating gasoline vapor, which can be discharged from the first steam outlet.

[0011] According to the technical solution provided in the embodiments of this application, the stirring assembly includes a stirring shaft with one end passing through the top of the oil and gas tank, the axial direction of the stirring shaft being a first direction; a plurality of stirring blades are circumferentially provided on the outer wall of the bottom end of the stirring shaft, the extension direction of the stirring blades being a second direction, the second direction being perpendicular to the first direction; the oil and gas generating assembly further includes a driving assembly connected to the top end of the stirring shaft placed outside the oil and gas tank, the driving assembly being used to drive the stirring shaft to rotate the stirring blades.

[0012] According to the technical solution provided in the embodiments of this application, a pressure stabilizing component is provided on the side of the oil and gas tank near the first steam outlet. The pressure stabilizing component has a second cavity. A first pressure regulating component is provided on the end of the pressure stabilizing component away from the first steam outlet. The end of the first pressure regulating component away from the pressure stabilizing component is connected to the first steam inlet. The first pressure regulating component has an open state and a closed state. When it is in the open state, gasoline vapor enters the second cavity from the first steam outlet and then enters the charcoal canister body. When it is in the closed state, gasoline vapor is stored in the second cavity.

[0013] The testing system also includes a control component electrically connected to the first pressure regulating component, the control component being used to control the first pressure regulating component to switch between the open state and the closed state according to the pressure in the second chamber.

[0014] According to the technical solution provided in the embodiments of this application, a steam assembly is provided between the pressure stabilizing component and the first steam outlet, and the steam assembly is used to evaporate the gasoline vapor discharged from the first steam outlet.

[0015] According to the technical solution provided in the embodiments of this application, an extraction component is provided between the steam assembly and the first steam outlet, and the extraction component is used to extract the gasoline vapor discharged from the first steam outlet to the steam assembly.

[0016] According to the technical solution provided in the embodiments of this application, the charcoal canister body is further provided with a second air inlet and a first exhaust port. The charcoal canister body is provided with an air supply component that communicates with the second air inlet. The air supply component is used to introduce compressed air into the charcoal canister body, and the compressed air squeezes out the gasoline vapor in the charcoal canister body through the first exhaust port.

[0017] According to the technical solution provided in the embodiments of this application, a second pressure regulating component is provided between the air supply component and the second air inlet, and the second pressure regulating component is used to regulate the flow rate of compressed air entering the carbon canister body.

[0018] According to the technical solution provided in the embodiments of this application, the voltage stabilizing component is provided with a pressure measuring component, which is used to measure the pressure in the second cavity.

[0019] According to the technical solution provided in the embodiments of this application, the voltage stabilizing component is provided with a pressure relief component, which is used to reduce the pressure of the second cavity.

[0020] In summary, this application proposes a charcoal canister gasoline performance testing system. This system comprises an oil vapor tank, a fuel supply assembly for introducing gasoline into the oil vapor tank, a charcoal canister body for adsorbing gasoline vapor, a first pipeline connecting the oil vapor tank and the charcoal canister body, a first branch pipeline connected to the first pipeline, a nitrogen supply assembly for supplying nitrogen to the first branch pipeline, and a switching assembly for controlling the flow rates of nitrogen and gasoline vapor. In use, the oil vapor generator in the oil vapor tank converts gasoline into gasoline vapor, which is then introduced into the first pipeline through a first outlet. The nitrogen supply assembly introduces nitrogen into the first pipeline through the first branch pipeline. The nitrogen and gasoline vapor mix and then enter the charcoal canister body. This application solves the problem of inaccurate nitrogen and gasoline vapor ratios by controlling the ratio of nitrogen to gasoline vapor entering the charcoal canister body through the switching assembly, thereby accurately simulating automotive application scenarios and improving the accuracy of testing the gasoline performance of automotive charcoal canisters. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a charcoal canister gasoline working capacity testing system provided in an embodiment of this application.

[0022] 1. Oil and gas tank body; 11. First cavity; 12. First oil inlet; 13. First steam outlet; 2. Oil supply assembly; 3. Extraction assembly; 4. Oil and gas generation assembly; 41. Stirring shaft; 42. Stirring blade; 43. Drive assembly; 5. Charcoal canister body; 51. First steam inlet; 52. Second exhaust port; 53. Second air inlet; 6. Pressure stabilizing assembly; 61. Pressure measuring assembly; 62. Pressure relief component; 63. Second cavity; 7. Steam assembly; 71. First pressure regulating assembly; 72. Second pressure regulating assembly; 73. Third pressure regulating assembly; 81. First pipeline; 811. First branch pipeline; 82. Second pipeline; 9. Gas supply assembly; 10. Control assembly; 111. First flow measurement assembly; 112. Second flow measurement assembly; 113. Third flow measurement assembly; 114. Fourth flow measurement assembly; 115. Fifth flow measurement assembly; 116. Sixth flow measurement assembly. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] Example 1

[0026] As mentioned in the background section, this application proposes a charcoal canister gasoline performance testing system, comprising:

[0027] The oil vapor tank 1 has a first cavity 11 inside, and a first steam outlet 13 at its top. The oil vapor tank 1 is provided with an oil vapor generating assembly 4, which is used to convert gasoline into gasoline vapor and discharge it from the first steam outlet 13.

[0028] The fuel supply assembly 2 is connected to the first cavity 11 and is used to supply gasoline into the first cavity 11.

[0029] The charcoal canister body 5 has a first steam inlet 51 at the top of the charcoal canister body 5 that communicates with the first steam outlet 13, and has an adsorption component inside the charcoal canister body 5 for adsorbing gasoline vapor.

[0030] The first pipeline 81 is connected to the first steam outlet 13 and the first steam inlet 51 at both ends, and a first branch pipeline 811 is provided on the first pipeline 81.

[0031] A nitrogen supply assembly is connected to the first branch pipe 811 and is used to supply nitrogen gas to the first branch pipe 811. After the nitrogen gas and gasoline vapor are mixed, they enter the charcoal canister body 5 through the first steam inlet 51.

[0032] A switching assembly for regulating the flow rate of gasoline vapor and nitrogen entering the first pipeline 81.

[0033] Please refer to Figure 1As shown, the oil vapor tank 1 is also provided with a first oil inlet 12 communicating with the first cavity 11, and the first oil inlet 12 is located on one side of the oil vapor tank 1; optionally, the oil supply assembly 2 includes an oil pump communicating with the first oil inlet 12, and the oil pump draws gasoline from the oil tank into the first cavity 11; the top of the charcoal canister body 5 has a second exhaust port 52, and the second exhaust port 52 is connected to an oil vapor measuring assembly located outside the charcoal canister body 5; optionally, the adsorption assembly is activated carbon, and in use, it is activated by the oil vapor generating assembly inside the oil vapor tank 1. 4. Gasoline is converted into gasoline vapor. The gasoline vapor is introduced into the first pipeline 81 through the first outlet 13. The nitrogen supply component introduces nitrogen into the first pipeline 81 through the first branch pipeline 811. After the nitrogen and gasoline vapor mix, they enter the charcoal canister body 5. The gasoline vapor is adsorbed by the adsorption component, and the air and nitrogen in the charcoal canister body 5 are squeezed out through the second exhaust port 52. When the gasoline vapor measurement component measures that the total content of gasoline discharged from the second exhaust port 52 reaches the set content, it indicates that the charcoal canister body 5 has reached a state of complete adsorption, thereby obtaining the adsorption capacity of the charcoal canister body 5. This application can control the ratio of nitrogen and gasoline vapor entering the charcoal canister body 5 through the switching component, thus solving the problem of inaccurate nitrogen and gasoline vapor ratio.

[0034] In a preferred embodiment, the gasoline vapor generating assembly 4 includes a rotatable stirring assembly. When the stirring assembly rotates, it causes the gasoline in the first cavity 11 to rotate in a preset direction, generating gasoline vapor, which can be discharged from the first steam outlet 13.

[0035] The gasoline vapor generator 4 agitates the gasoline in the first cavity 11 to rotate in a preset direction, which increases the intensity of gasoline turbulence and accelerates the evaporation of gasoline, thereby generating a large amount of gasoline vapor, which is discharged from the first steam outlet 13.

[0036] In a preferred embodiment, the stirring assembly includes a stirring shaft 41 with one end passing through the top of the oil and gas tank 1, the axial direction of the stirring shaft 41 being a first direction; a plurality of stirring blades 42 are circumferentially provided on the outer wall of the bottom end of the stirring shaft 41, the extending direction of the stirring blades 42 being a second direction, the second direction being perpendicular to the first direction; the oil and gas generating assembly 4 further includes a driving assembly 43 connected to the top end of the stirring shaft 41 located outside the oil and gas tank 1, the driving assembly 43 being used to drive the stirring shaft 41 to drive the stirring blades 42 to rotate.

[0037] Please refer to Figure 1As shown, the first direction is vertical, the second direction is horizontal, the bottom end of the stirring shaft 41 is placed inside the gasoline in the first cavity 11, and its top end extends to the outside of the gasoline vapor tank 1; optionally, a plurality of stirring blades 42 are arranged in an array circumferentially on the outer wall of the stirring shaft 41, the driving component 43 is a pneumatic motor, the pneumatic motor is connected to a compressed air pipeline, and a switch valve is provided on the compressed air pipeline. When the control switch valve supplies compressed air to the pneumatic motor, the pneumatic motor starts, drives the stirring shaft 41 to drive the stirring blades 42 to rotate, and the stirring blades 42 agitate the gasoline to generate gasoline vapor.

[0038] In a preferred embodiment, the oil vapor tank 1 is provided with a pressure stabilizing component 6 near the first steam outlet 13. The pressure stabilizing component 6 has a second cavity 63. The switching component includes a first pressure regulating component 71 disposed at the end of the pressure stabilizing component 6 away from the first steam outlet 13. The end of the first pressure regulating component 71 away from the pressure stabilizing component 6 is connected to the first steam inlet 51. The first pressure regulating component 71 has an open state and a closed state. When it is in the open state, gasoline vapor enters the second cavity 63 from the first steam outlet 13 and then enters the charcoal canister body 5. When it is in the closed state, gasoline vapor is stored in the second cavity 63.

[0039] The testing system also includes a control component 10 electrically connected to the first pressure regulating component 71. The control component 10 is used to control the first pressure regulating component 71 to switch between the open state and the closed state according to the pressure in the second cavity 63.

[0040] Specifically, when the control component 10 determines that the pressure inside the second chamber 63 is equal to the first set pressure value, it controls the first pressure regulating component 71 to be in the open state; when it determines that the pressure inside the second chamber 63 is less than the first set pressure value, it controls the first pressure regulating component 71 to be in the closed state. Optionally, the control component 10 is a computer with a control program internally programmed, and the control program sets a first set pressure value, which is 10 kPa with a minimum of 5 kPa. Optionally, the first pressure regulating component 71 is a pressure regulating valve. When the pressure inside the second chamber 63 is greater than the first set pressure value, the pressure regulating valve is in the open state, and the flow rate of gasoline vapor in the second chamber 63 can be adjusted by controlling the opening degree of the pressure regulating valve through the control component 10. When the pressure inside the second chamber 63 is less than the first set pressure value, the pressure stabilizing component 6 is used to store gasoline vapor. The pressure stabilizing component 6 and the first pressure regulating component 71 cooperate to stabilize the gasoline vapor within a certain pressure range.

[0041] The switching assembly further includes a third pressure regulating assembly 73 electrically connected to the control assembly 10 on the first branch pipe 811. Optionally, the third pressure regulating assembly 73 is the same as the first pressure regulating assembly 71, both employing a pressure regulating valve. The control assembly 10 controls the opening of the pressure regulating valve to adjust the nitrogen flow rate. The mixture of nitrogen and gasoline vapor enters the charcoal canister body 5 through the first inlet 51. The adsorption assembly inside the charcoal canister body 5 adsorbs the gasoline vapor, and the nitrogen and air inside the charcoal canister body 5 are discharged through the second exhaust port 52. This test system can arbitrarily adjust the ratio of nitrogen and gasoline vapor entering the charcoal canister body 5 by controlling the first pressure regulating assembly 71 and the third pressure regulating assembly 73.

[0042] In a preferred embodiment, the pressure stabilizing component 6 is provided with a pressure measuring component 61, which is used to measure the pressure inside the second cavity 63.

[0043] Optionally, the pressure measuring component 61 is a pressure gauge with a display screen for displaying the pressure inside the second cavity 63. When the power is off, the pressure gauge can still observe the pressure inside the second cavity 63 to determine whether the internal pressure of the second cavity 63 is too high, thereby causing a dangerous accident.

[0044] In a preferred embodiment, the pressure stabilizing component 6 is provided with a pressure relief component 62, which is used to reduce the pressure of the second cavity 63.

[0045] Optionally, the pressure relief component 62 is a pressure relief valve, which is electrically connected to the control component 10. When the pressure in the pressure stabilizing component 6 is too high, the pressure relief valve can work automatically. When the power is off, the pressure relief valve can be manually opened to avoid safety accidents caused by excessive pressure in the pressure stabilizing component 6.

[0046] In a preferred embodiment, a steam assembly 7 is provided between the pressure stabilizing component 6 and the first steam outlet 13. The steam assembly 7 is used to evaporate the gasoline vapor discharged from the first steam outlet 13. An extraction component 3 is provided between the steam assembly 7 and the first steam outlet 13. The extraction component 3 is used to draw the gasoline vapor discharged from the first steam outlet 13 into the steam assembly 7. Optionally, the extraction component 3 is a diaphragm pump, which draws the gasoline vapor into the steam assembly 7. The steam assembly 7 is a steam filter with multiple 30°C constant-temperature capillary tubes integrated inside. If the gasoline vapor extracted from the first steam outlet 13 contains small droplets, the steam assembly 7 evaporates the small droplets back into gasoline vapor, heating and vaporizing them. The temperature inside the steam assembly 7 is only 30°C, which is not high enough to cause liquefaction within the pipeline.

[0047] Example 2

[0048] Based on Embodiment 1, the charcoal canister body 5 is further provided with a second air inlet 53 and a first exhaust port. The charcoal canister body 5 is provided with an air supply component 9 that communicates with the second air inlet 53. The air supply component 9 is used to introduce compressed air into the charcoal canister body 5. The compressed air squeezes out the gasoline vapor in the charcoal canister body 5 through the first exhaust port.

[0049] Optionally, the air supply component 9 is an air pump, which can compress indoor air into compressed air and deliver it to the charcoal canister body 5; the second air inlet 53 is located at the top of the charcoal canister body 5, and the first exhaust port is located at the bottom of the charcoal canister body 5; the charcoal canister body 5 has an adsorption state and a desorption state. When the charcoal canister body 5 is in the adsorption state, the first pressure regulating component 71 and the third pressure regulating component 73 are opened, and a mixture of gasoline vapor and nitrogen gas flows into the charcoal canister body 5. At this time, the first exhaust port is closed, and the second exhaust port 52 is open; when the charcoal canister body 5 is in the desorption state, the first exhaust port is open, the second exhaust port 52 is closed, and the air supply component 9 introduces compressed air into the charcoal canister body 5, squeezing out the gasoline vapor adsorbed in the charcoal canister body 5 through the first exhaust port.

[0050] In a preferred embodiment, a second pressure regulating component 72 is provided between the air supply component 9 and the second air inlet 53. The second pressure regulating component 72 is used to regulate the flow rate of compressed air entering the charcoal canister body 5.

[0051] Please refer to Figure 1 As shown, the second pressure regulating component 72 is the same as the first pressure regulating component 71 and the third pressure regulating component 73, all of which are pressure regulating valves. The pressure regulating valves are connected to the gas supply component 9 and are used to control the gas flow rate entering the charcoal canister body 5.

[0052] Example 3

[0053] Based on Embodiments 1 and 2, the control component 10 is further configured to control the flow rate of gasoline vapor entering the first pipeline 81 from the second cavity 63, the flow rate of the mixed gas of nitrogen and gasoline vapor entering the charcoal canister body 5, the flow rate of gasoline vapor entering the extraction component 3 from the first steam outlet 13, and the flow rate of gasoline vapor entering the pressure stabilizing component 6 after evaporation by the steam component 7.

[0054] Please refer to Figure 1As shown, the steam assembly 7 and the pressure stabilizing assembly 6 are connected by a third pipeline, and the second pressure regulating assembly 72 and the second air inlet 53 are connected by a fourth pipeline; the second pipeline 82 is provided with a first flow measurement assembly 111 electrically connected to the control assembly 10. The first flow measurement assembly 111 is used to measure the flow rate of gasoline vapor entering the extraction assembly 3 from the first steam outlet 13 and transmit the flow rate value to the control assembly 10; the third pipeline is provided with a second flow measurement assembly 112 electrically connected to the control assembly 10. The second flow measurement assembly 112 is used to measure the flow rate of gasoline vapor entering the second cavity 63 after vaporization by the steam assembly 7 and transmit the flow rate value to the control assembly 10.

[0055] At the connection between the first pipeline 81 and the first branch pipeline 811, and on the first pipeline 81 between it and the first pressure regulating component 71, a third flow measurement component 113 electrically connected to the control component 10 is provided. The third flow measurement component 113 measures the flow rate of gasoline vapor discharged from the pressure stabilizing component 6. The control component 10 controls the opening of the first pressure regulating component 71 based on the measurement value of the third flow measurement component 113, thereby changing the flow rate of gasoline vapor. A fourth flow measurement component 114 electrically connected to the control component 10 is provided on the first branch pipeline 811. The fourth flow measurement component 114 measures the flow rate of nitrogen entering the first pipeline 81 and transmits this flow rate value to the control component 10. The first branch pipeline 811... At the connection point with the first pipeline 81, on the first pipeline 81 between the first steam inlet 51, a fifth flow measurement component 115 electrically connected to the control component 10 is provided. The fifth flow measurement component 115 is used to measure the flow rate of the mixture of gasoline vapor and nitrogen. The control component 10 controls the opening of the second pressure regulating component 72 according to this flow rate value, thereby changing the flow rate of nitrogen entering the first pipeline 81. A sixth flow measurement component 116 electrically connected to the control component 10 is provided on the fourth pipeline. The sixth flow measurement component 116 is used to measure the flow rate of compressed air entering the charcoal canister body 5. The control component 10 controls the opening of the third pressure regulating component 73 according to this flow rate value, thereby controlling the flow rate of compressed gas entering the charcoal canister body 5.

[0056] Optionally, the first flow measurement component 111, the second flow measurement component 112, the third flow measurement component 113, the fourth flow measurement component 114, the fifth flow measurement component 115, and the sixth flow measurement component 116 are all volumetric flow meters.

[0057] The adsorption process of the carbon canister body 5 is as follows:

[0058] The fuel supply component 2 adds gasoline into the fuel tank 1, and the drive component 43 starts to drive the stirring shaft 41 to rotate the stirring blade 42 to form gasoline vapor.

[0059] The extraction component 3 draws gasoline vapor from the first steam outlet 13 into the steam component 7. After evaporation and vaporization, it enters the pressure stabilizing component 6 for storage. When the control component 10 determines that the pressure in the second chamber 63 is greater than the first set pressure value, it controls the first pressure regulating component 71 to open, and the gasoline vapor is output to the first pipeline 81, where it mixes with the nitrogen gas input from the first branch pipeline 811. The mixed gas enters the charcoal canister body 5 from the first steam inlet 51, and the charcoal canister body 5 adsorbs the gasoline vapor in the mixed gas.

[0060] The desorption process of the carbon canister body 5 is as follows:

[0061] The first exhaust port is open, the second exhaust port 52 is closed, and the air supply component 9 introduces compressed air into the charcoal canister body 5 at a certain flow rate. The control component 10 controls the opening of the second pressure regulating component 72 according to the flow value of the sixth flow measurement component 116 to adjust the flow rate of the compressed air entering the charcoal canister body 5. The compressed air discharges the gasoline vapor adsorbed in the charcoal canister body 5 through the first exhaust port, thus completing the desorption.

[0062] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A charcoal canister gasoline workability test system characterized by comprising: The test system comprises an oil-vapor tank body (1) having a first cavity (11) therein, a first vapor outlet (13) at the top of the oil-vapor tank body (1), an oil-vapor generating assembly (4) arranged on the oil-vapor tank body (1) and used for converting gasoline into gasoline vapor and discharging the gasoline vapor from the first vapor outlet (13), wherein the oil-vapor generating assembly (4) comprises a rotatable stirring assembly used for rotating the gasoline in the first cavity (11) around a preset direction to increase the turbulent flow intensity of the gasoline, accelerate the evaporation of the gasoline, and further generate a large amount of gasoline vapor which can be discharged from the first vapor outlet (13); an oil supply assembly (2) in communication with the first cavity (11) and used for delivering gasoline into the first cavity (11); a carbon canister body (5) having a first vapor inlet (51) in communication with the first vapor outlet (13) at the top of the carbon canister body (5) and an adsorption assembly arranged in the carbon canister body (5) and used for adsorbing gasoline vapor; a first pipeline (81) in communication with the first vapor outlet (13) and the first vapor inlet (51) at two ends of the first pipeline (81), wherein the first pipeline (81) is provided with a first branch pipeline (811); a nitrogen supply assembly in communication with the first branch pipeline (811) and used for introducing nitrogen into the first branch pipeline (811), wherein the mixture of the nitrogen and the gasoline vapor enters the carbon canister body (5) through the first vapor inlet (51); a switch assembly used for adjusting the flow of the gasoline vapor and the nitrogen in the first pipeline (81); and a pressure stabilizing assembly (6) arranged on the oil-vapor tank body (1) close to the side of the first vapor outlet (13), wherein the pressure stabilizing assembly (6) has a second cavity (63) therein, the switch assembly comprises a first pressure regulating assembly (71) arranged on the pressure stabilizing assembly (6) away from the first vapor outlet (13) and a third pressure regulating assembly (73) arranged on the first branch pipeline (811), the first pressure regulating assembly (71) is in communication with the first vapor inlet (51) away from the pressure stabilizing assembly (6), the first pressure regulating assembly (71) has an open state and a closed state, when in the open state, the gasoline vapor enters the second cavity (63) from the first vapor outlet (13) and then enters the carbon canister body (5), when in the closed state, the gasoline vapor is stored in the second cavity (63), and the pressure stabilizing assembly (6) and the first pressure regulating assembly (71) cooperate to stabilize the pressure of the gasoline vapor. The test system further comprises a control assembly (10) electrically connected with the first pressure regulating assembly (71) and the third pressure regulating assembly (73), wherein the control assembly (10) is used for controlling the first pressure regulating assembly (71) to switch between the open state and the closed state according to the pressure in the second cavity (63), and the control assembly (10) is further used for controlling the third pressure regulating assembly (73) to adjust the flow of the nitrogen. ​ ​ ​ ​ ​ ​ ​ 2. The charcoal canister gasoline workability test system according to claim 1, characterized by, The stirring assembly includes a stirring shaft (41) with one end passing through the top of the oil and gas tank (1), the axial direction of the stirring shaft (41) being a first direction; a plurality of stirring blades (42) are provided circumferentially on the outer wall of the bottom end of the stirring shaft (41), the extension direction of the stirring blades (42) being a second direction, the second direction being perpendicular to the first direction; the oil and gas generating assembly (4) also includes a drive assembly (43) connected to the top end of the stirring shaft (41) placed outside the oil and gas tank (1), the drive assembly (43) being used to drive the stirring shaft (41) to drive the stirring blades (42) to rotate.

3. The charcoal canister gasoline workability test system of claim 1, wherein, A steam assembly (7) is provided between the pressure stabilizing component (6) and the first steam outlet (13), the steam assembly (7) being used to evaporate the gasoline vapor discharged from the first steam outlet (13).

4. The charcoal canister gasoline workability test system of claim 3, wherein, An extraction component (3) is provided between the steam assembly (7) and the first steam outlet (13), and the extraction component (3) is used to extract the gasoline vapor discharged from the first steam outlet (13) to the steam assembly (7).

5. The charcoal canister gasoline workability test system of claim 1, wherein, The charcoal canister body (5) is also provided with a second air inlet (53) and a first exhaust port. The charcoal canister body (5) is provided with an air supply component (9) connected to the second air inlet (53). The air supply component (9) is used to introduce compressed air into the charcoal canister body (5). The compressed air squeezes the gasoline vapor in the charcoal canister body (5) out through the first exhaust port.

6. The charcoal canister gasoline workability test system of claim 5, wherein, A second pressure regulating component (72) is provided between the air supply component (9) and the second air inlet (53). The second pressure regulating component (72) is used to regulate the flow rate of compressed air entering the carbon canister body (5).

7. The charcoal canister gasoline workability test system of claim 1, wherein, The pressure stabilizing component (6) is provided with a pressure measuring component (61), which is used to measure the pressure inside the second cavity (63).

8. The charcoal canister gasoline workability test system of claim 1, wherein, The pressure stabilizing component (6) is provided with a pressure relief component (62), which is used to reduce the pressure of the second cavity (63).

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