Dual-channel vehicle fuel tank isolating valve and vehicle
By designing a dual-channel fuel tank isolation valve that integrates a venting module, a regulating module, and a flow module, the problem of difficult pressure relief control in the fuel tank isolation valve is solved, and the fuel tank pressure and flow are effectively regulated to ensure normal vehicle refueling.
Patent Information
- Application Number
- CN202422223048.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-09-11
AI Technical Summary
The existing fuel tank isolation valve has a single discharge channel, which cannot achieve flow control during the pressure relief process, resulting in untimely pressure relief and failure to refuel smoothly when the vehicle is refueling.
A dual-channel oil tank isolation valve is designed. By integrating the venting module, regulating module, and flow module, the structure of the oil tank isolation valve is miniaturized. Through the cooperation of the regulating module and the flow module, the oil tank pressure is regulated to ensure the pressure relief rate and flow control.
The pressure relief rate and flow control capability of the fuel tank isolation valve have been improved to prevent the fuel nozzle from automatically shutting off due to excessive instantaneous pressure during refueling, and to prevent excessive exhaust gas flow due to excessive flow, thus ensuring normal refueling of the vehicle.
Smart Images
Figure CN223524463U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of automobile isolation valve, specifically relates to a double -channel vehicle oil tank isolation valve and vehicle. BACKGROUND
[0002] With the continuous development of new energy automobile technology and the improvement of environmental protection consciousness, the hybrid electric vehicle market presents the trend of rapid growth. At the same time, in order to cope with increasingly stringent automobile exhaust emission regulations, the technical characteristics of oil and electricity of hybrid electric vehicles make them have good fuel economy. The oil tank isolation valve is used for pressure storage of oil gas vapor in the oil tank, to avoid the frequent delivery of oil gas vapor in the oil tank to the carbon tank when the oil circuit and the electric circuit of the hybrid electric vehicle are switched, so as to be saturated, even directly emptying to the atmosphere.
[0003] In the prior art, a venting mechanism, an adjusting mechanism and other auxiliary mechanisms are usually arranged in the oil tank isolation to discharge the oil gas vapor in the oil tank isolation valve. However, due to the single discharge channel of the oil tank isolation valve in the prior art, the flow control during pressure relief cannot be realized, so that the vehicle cannot be refueled in time due to the delay of pressure relief. SUMMARY
[0004] One object of the first aspect of the utility model is to provide a double-channel vehicle oil tank isolation valve to solve the technical problem of difficulty in controlling the pressure reduction speed in the oil tank of the oil tank isolation valve in the prior art.
[0005] Another object of the first aspect of the utility model is to improve the pressure relief rate of the oil tank isolation valve.
[0006] The object of the second aspect of the utility model is to provide a vehicle comprising the above-mentioned double-channel vehicle oil tank isolation valve.
[0007] According to the object of the first aspect of the utility model, the utility model provides a double-channel vehicle oil tank isolation valve, which comprises:
[0008] A housing forms a venting chamber therein;
[0009] A barrier is used to divide the venting chamber into a first chamber and a second chamber, the barrier further comprises a first communication part and a second communication part, the first communication part and the second communication part both communicate the first chamber and the second chamber, and the first chamber further comprises an oil tank connecting end communicating with the oil tank;
[0010] A ventilation module movably arranged in the first chamber, the ventilation module being configured to close the second communication part when moved to a first working position and open the second communication part when moved to a second working position, the ventilation module comprising at least one exhaust passage configured to communicate the first communication part and the first chamber when the ventilation module is in the first working position;
[0011] A flow module configured to divide the second chamber into an inlet chamber and an outlet chamber, the inlet chamber being in communication with both the first communication part and the second communication part, the outlet chamber being in communication with the carbon canister connection end, the flow module comprising a first flow passage and a second flow passage, the first flow passage and the second flow passage both communicating the inlet chamber and the outlet chamber;
[0012] An adjustment module movably arranged in the inlet chamber, the adjustment module being configured to form a state of only closing the first communication part when moved to a third working position and form a state of shielding a top opening of the first flow passage when moved to a fourth working position.
[0013] Optionally, the adjustment module comprises a moving piece and a first elastic piece, the first elastic piece being configured to urge the moving piece to move to the third working position when a pressure in the first chamber is at a first preset pressure, so that a pressure relief gas path of the first chamber, the exhaust passage, the first communication part, the second flow passage in sequence is formed when the moving piece is in the third working position and the ventilation module is in the first working position.
[0014] The first elastic piece is configured to urge the moving piece to move to the fourth working position when a pressure in the first chamber is at a second preset pressure, so that a full opening gas path of the first chamber, the exhaust passage, the second communication part, the first flow passage and the second flow passage in sequence is formed when the moving piece is in the fourth working position and the ventilation module is in the second working position.
[0015] Optionally, the second flow passage is in a plurality, and the plurality of second flow passages are uniformly arranged on a circumferential side of the first flow passage.
[0016] Optionally, the moving piece further comprises:
[0017] A first sealing piece configured to form the first sealing surface;
[0018] A clamping assembly connected with the first sealing piece, the clamping assembly being configured to cooperate with the elastic piece to support the first sealing piece.
[0019] Optionally, the barrier further comprises a plurality of first guide posts, the plurality of guide posts are arranged around the first communication part and are uniformly spaced, and the clamping assembly further comprises:
[0020] A sleeve is fixedly connected with the first sealing member;
[0021] A plurality of clamping members are arranged around the first sealing member and are uniformly spaced, and each clamping member comprises a clamping groove matched with the first guide post.
[0022] Optionally, the oil tank isolation valve further comprises a second guide post, and the ventilation module further comprises:
[0023] An armature comprises a vertical part and a horizontal part, the vertical part is formed with a guide groove and a mounting groove, the guide groove is arranged in the mounting groove, and the guide groove is arranged to be matched with the second guide post;
[0024] A second elastic member is arranged in the mounting groove, and the second elastic member is sleeved on the circumferential side of the second guide post.
[0025] Optionally, the ventilation module further comprises:
[0026] A second sealing member is sleeved on the circumferential side of the horizontal part, and the bottom of the second sealing member is formed with a second sealing surface for sealing the second communication part, and the second sealing member is formed with a through hole arranged corresponding to the exhaust passage.
[0027] Optionally, the oil tank isolation valve further comprises:
[0028] A limiting member is arranged in the housing, a limiting space is formed in the limiting member, the limiting space is used for mounting the ventilation module, and the limiting member further comprises a limiting surface for limiting the armature.
[0029] Optionally, the vertical part is formed with a plurality of first through holes;
[0030] The horizontal part comprises a second through hole;
[0031] The first through hole and the second through hole are communicated to form the exhaust passage.
[0032] According to the second aspect of the utility model, the utility model further provides a vehicle, further comprising the oil tank isolation valve according to any one of the above, and the vehicle further comprises:
[0033] A carbon tank is connected with the carbon tank connecting end of the oil tank isolation valve, and the carbon tank is used for storing or discharging an oil gas mixture to reduce the pressure in the first cavity;
[0034] An oil tank is connected with the oil tank connecting end.
[0035] The oil tank isolation valve of the utility model realizes the miniaturization of the structure of the oil tank isolation valve by integrating the ventilation module, the adjusting module and the flow module, and by setting the adjusting module to cooperate with the flow module, the pressure of the oil tank in the oil tank isolation valve is adjusted, so that the oil tank isolation valve can simultaneously meet the pressure requirement in the first chamber and the flow requirement in the pressure reduction process, thereby improving the low flow resistance characteristic of the oil tank isolation valve, avoiding that the automatic jump of the refueling gun due to the excessively large instantaneous pressure during refueling causes the automobile to be unable to add fuel, and simultaneously avoiding that the excessively large flow causes the excessively large exhaust emission flow.
[0036] Further, the adjusting module including the moving piece and the first elastic piece is arranged between the ventilation module and the flow module, so that when the pressure of the first chamber is at the first preset pressure, the moving piece is forced to move downward to the third working position, so as to shield the top opening of the first flow channel, so that the oil gas mixture in the first cavity flows to the second chamber from the exhaust passage through the first communication part, so as to form a pressure relief gas path, avoiding the situation that the pressure in the first chamber is excessively large to cause the inability to refuel or the excessively large emission amount of the oil gas mixture during the pressure relief process, and the pressure relief gas path has a preset flow. The oil tank isolation valve of the embodiment is set to form a full-opening gas path when the adjusting module is located at the fourth working position, that is, at this time, the ventilation module is forced to move upward to expose the second communication part, and the adjusting module moves upward to close the first communication part, so that the oil gas mixture in the first chamber is discharged into the carbon tank connecting end through the full-opening gas path, so that the pressure in the first chamber reaches the second preset pressure within a preset time, thereby improving the pressure reduction rate of the oil tank isolation valve and ensuring that the oil tank of the vehicle can be normally refueled.
[0037] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and can be implemented according to the content of the specification, the following will be described in detail with the preferred embodiment of the utility model and the cooperation of the drawings. BRIEF DESCRIPTION OF DRAWINGS
[0038] Some specific embodiments of the utility model will be described in detail hereinafter with reference to the drawings in an exemplary but not restrictive manner. The same reference signs in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:
[0039] Figure 1 is a schematic sectional view of the oil tank isolation valve according to one embodiment of the utility model;
[0040] Figure 2 is Figure 1 is a schematic partial enlarged view shown at A in Fig.
[0041] Figure 3 is a schematic structural view of the blocking piece according to one embodiment of the utility model;
[0042] Figure 4 is a schematic structural view of an adjusting module according to an embodiment of the present application;
[0043] Figure 5 is a schematic structural view of a clamping assembly according to an embodiment of the present application;
[0044] Figure 6 is a schematic structural view of a ventilation module according to an embodiment of the present application;
[0045] Figure 7 is a schematic structural view of a flow module according to an embodiment of the present application;
[0046] Figure 8 is a schematic structural view of a pressure relief gas path in an oil tank isolation valve according to an embodiment of the present application;
[0047] Figure 9 is a schematic structural view of a full opening gas path in an oil tank isolation valve according to an embodiment of the present application;
[0048] Figure 10 is a schematic partial structural view of a vehicle according to another embodiment of the present application.
[0049] Reference signs:
[0050] 100 - oil tank isolation valve, 200 - vehicle, 210 - carbon tank, 220 - oil tank, 10 - shell, 11 - ventilation chamber, 111 - first chamber, 112 - second chamber, 12 - barrier, 121 - first communication part, 122 - second communication part, 123 - first guide column, 13 - oil tank connection end, 14 - carbon tank connection end, 20 - ventilation module, 21 - exhaust passage, 22 - armature, 221 - vertical part, 222 - horizontal part, 223 - guide groove, 224 - mounting groove, 23 - second elastic member, 24 - second sealing member, 30 - flow module, 31 - first flow passage, 32 - second flow passage, 40 - adjusting module, 41 - moving member, 42 - first elastic member, 411 - first sealing member, 412 - clamping assembly, 413 - clamping sleeve, 414 - clamping member, 50 - second guide column, 60 - limiting member. DETAILED DESCRIPTION
[0051] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings and embodiments. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.
[0052] In order to make the above objectives, characteristics and advantages of the present application more apparent, comprehensible and easier to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are only intended to explain the present application, but not to limit the present application. In addition, it should be noted that only the parts related to the present application are shown in the drawings for the convenience of description, rather than all the structures. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.
[0053] The terms "comprising" and "having" and any variations thereof in the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices.
[0054] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.
[0055] Figure 1 is a schematic sectional view of an oil tank isolation valve according to an embodiment of the present application, Figure 2 is Figure 1 is a schematic partial enlarged view shown at A in FIG. 4, Figure 3 is a schematic structural view of a barrier according to an embodiment of the present application, Figure 4 is a schematic structural view of an adjusting module according to an embodiment of the present application, Figure 5 is a schematic structural view of a clamping assembly according to an embodiment of the present application, Figure 6 is a schematic structural view of a ventilation module according to an embodiment of the present application, Figure 7 is a schematic structural view of a flow module according to an embodiment of the present application, Figure 8 is a schematic structural view of a pressure relief gas path in an oil tank isolation valve according to an embodiment of the present application, Figure 9 is a schematic structural view of a full opening gas path in an oil tank isolation valve according to an embodiment of the present application.
[0056] As Figure 1As shown, the utility model provides a kind of double channel vehicle oil tank isolation valve.The oil tank isolation valve 100 includes shell 10, barrier 12, ventilation module 20, flow module 30 and adjusting module 40.Oil tank isolation valve 100 is formed ventilation chamber 11 in shell 10, barrier 12 is used to divide ventilation chamber 11 into first chamber 111 and second chamber 112, barrier 12 also includes first communication part 121 and second communication part 122 (refer to Figure 3 ), first communication part 121 and second communication part 122 are all communicated first chamber 111 and second chamber 112 (refer to Figure 2 ), first chamber 111 also includes oil tank connection end 13 communicated with oil tank 220, ventilation module 20 is movably arranged in first chamber 111, ventilation module 20 is used to close second communication part 122 when moving to first working position, open second communication part 122 when moving to second working position, ventilation module 20 includes at least one exhaust passage 21, exhaust passage 21 is arranged to be communicated first communication part 121 and first chamber 111 when ventilation module 20 is located first working position, flow module 30 is used to divide second chamber 112 into import chamber and export chamber, import chamber is communicated with first communication part 121 and second communication part 122, export chamber is communicated with carbon tank connection end 14, flow module 30 includes first flow passage 31 and second flow passage 32, first flow passage 31 and second flow passage 32 are all communicated import chamber and export chamber, adjusting module 40 is movably arranged in import chamber, adjusting module 40 is used to form the state of only closing first communication part 121 when moving to third working position, form the state of shielding the top opening of first flow passage 31 when moving to fourth working position.Here, oil tank connection end 13 and carbon tank connection end 14 are located at both ends of oil tank isolation valve 100 respectively.
[0057] In the embodiment, the adjusting module 40 is arranged to have a third working position closing only the first communication part 121 and a fourth working position shielding the top opening of the first flow passage 31. When the pressure in the first chamber 111 is too high, the adjusting module 40 is forced to move down to the fourth working position, opening the first communication part 121 and shielding the top opening of the first flow passage 31, so that the oil-gas mixture in the first chamber 111 flows into the carbon canister connecting end 14 through the first communication part 121 and the second flow passage 32, reducing the pressure in the first chamber 111, and when the pressure in the first chamber 111 is reduced to the second preset pressure, the adjusting module 40 is forced to move up to the third working position closing the first communication part 121 and opening the first flow passage 31, so that the oil-gas mixture in the first chamber 111 flows into the carbon canister connecting end through the second communication part 122, the first flow passage 31 and the second flow passage 32, thereby improving the low flow resistance characteristic of the oil tank isolation valve 100. That is, the embodiment integrates the venting module 20, the adjusting module 40 and the flow module 30 in the oil tank isolation valve 100, realizing the structural miniaturization of the oil tank isolation valve 100, so that the oil tank isolation valve 100 can meet the pressure requirement in the first chamber 111 and the flow requirement in the pressure reduction process at the same time, thereby improving the low flow resistance characteristic of the oil tank isolation valve 100, avoiding the automatic jump of the refueling gun due to the too high instantaneous pressure during refueling, and avoiding the too large flow rate of exhaust gas emission.
[0058] In the embodiment, the first communication part 121 includes a first communication hole, and the second communication part 122 includes a plurality of second communication holes. The first communication hole is located at the center of the blocking disc, and the second communication holes are arranged around the first communication hole. The venting module 20 is arranged to have the exhaust passage 21 communicating with the first communication hole and the bottom closing the second communication holes when located at the first working position, so that the oil-gas mixture flows from the exhaust passage 21 through the first communication part 121 to the inlet chamber. The venting module 20 is also arranged to open the second communication holes when located at the second working position, so that the oil-gas mixture flows from the second communication holes into the second chamber 112 and from the inlet chamber through the first flow passage 31 and the second flow passage 32, thereby improving the flow rate of the oil-gas mixture and the pressure drop rate of the oil tank isolation valve 100. Here, the number of the first venting holes is one, and the first venting hole is arranged to protrude from the top surface of the blocking piece 12 towards the second chamber 112. The number of the second venting holes is three, and the second venting holes are in circular arc structure and arranged around the first venting hole.
[0059] As Figure 2As shown, in a further embodiment, the adjusting module 40 comprises a moving piece 41 and a first elastic piece 42, the first elastic piece 42 is configured to urge the moving piece 41 to move to the third working position when the pressure in the first chamber 111 is at the first preset pressure, so that when the moving piece 41 is located at the third working position and the ventilation module 20 is located at the first working position, the first chamber 111, the exhaust passage 21, the first communication part 121, and the second flow-through passage 32 are sequentially communicated to form a pressure relief gas path (see Figure 8 ). The first elastic piece 42 is configured to urge the moving piece 41 to move to the fourth working position when the pressure in the first chamber 111 is at the second preset pressure, so that when the moving piece 41 is located at the fourth working position and the ventilation module 20 is located at the second working position, the first chamber 111, the exhaust passage 21, the second communication part 122, the first flow-through passage 31, and the second flow-through passage 32 are sequentially communicated to form a full-opening gas path (see Figure 9 ). In this embodiment, the first elastic piece 42 is sleeved on the moving piece 41 to provide the moving piece 41 with an elastic force in the extension direction of the moving piece 41. By arranging the adjusting module 40 comprising the moving piece 41 and the first elastic piece 42 between the ventilation module 20 and the flow-through module 30, the moving piece 41 is forced to move downward to the third working position to close the first flow-through passage 31 when the pressure in the first chamber 111 is at the first preset pressure, so that the oil-gas mixture in the first cavity flows from the exhaust passage 21 to the second chamber 112 through the first communication part 121 to form a pressure relief gas path, avoiding the situation that the pressure in the first chamber 111 is too large to cause the oil-gas mixture to be unable to be added or the amount of the oil-gas mixture to be discharged to be too large during pressure relief, and the pressure relief gas path has a preset flow rate. The oil tank isolation valve 100 of this embodiment is arranged to form a full-opening gas path when the adjusting module 40 is located at the fourth working position, that is, the ventilation module 20 is forced to move upward to expose the second communication part 122, and the adjusting module 40 moves upward to close the first communication part 121, so that the oil-gas mixture in the first chamber 111 is discharged into the carbon canister connecting end 14 through the full-opening gas path, so that the pressure in the first chamber 111 reaches the second preset pressure within a preset time, thereby improving the pressure reduction rate of the oil tank isolation valve 100 and ensuring that the oil tank 220 of the vehicle 200 can be normally refueled.
[0060] In this embodiment, the first preset pressure is any value in the range of 25kPa-35kPa, the second preset pressure is any value in the range of 15kPa-25kPa, the preset flow rate is any value in the range of 100L / min-220L / min, and the preset time is any value in the range of 5s-15s. That is, the first preset pressure range can be 25kPa, 26kPa, 27kPa, 28kPa, 29kPa, 30kPa, 32kPa, 34kPa, or 35kPa, or any value in the range of 25kPa-35kPa, the second preset pressure can be 15kPa,
[0061] 16kPa, 17kPa, 18kPa, 19kPa, 20kPa, 22kPa, 24kPa or 25kPa, or any value between 15kPa and 25kPa, the preset flow rate can be 100L / min, 120L / min, 140L / min,
[0062] 160L / min, 180L / min or 200L / min, or any value between 100L / min and 220L / min, the preset time can be 5s, 6s, 7s, 8s, 9s, 10s, 11s, 12s, 13s, 14s or 15s, or any value between 5s and 15s.
[0063] As shown in FIG. 1, in some embodiments, the first flow-through channel 31 is arranged on the top of the flow-through module 30, and the second flow-through channel 32 is arranged on the side of the flow-through module 30. Figure 7 As shown in FIG. 1, in some embodiments, the first flow-through channel 31 is arranged on the top of the flow-through module 30, and the second flow-through channel 32 is arranged on the side of the flow-through module 30.
[0064] In this embodiment, the first flow-through channel 31 is arranged to protrude from the top of the flow-through module 30 towards the bottom, and the first flow-through channel 31 is arranged to cooperate with the clamping assembly 412 of the adjustment module 40, so that the adjustment module 40 is forced to move downward into the first flow-through channel 31, shielding the top opening of the first flow-through channel 31, and avoiding the situation that the amount of oil and gas mixture discharged from the flow-through module 30 is too large when the pressure in the first chamber 111 is too high.
[0065] As shown in FIG. 1, in some embodiments, the first flow-through channel 31 is arranged on the top of the flow-through module 30, and the second flow-through channel 32 is arranged on the side of the flow-through module 30. Figure 4As shown, in a further embodiment, the moving part 41 further comprises a first sealing part 411 for forming a first sealing surface and a clamping assembly 412 connected with the first sealing part 411, the clamping assembly 412 is arranged to cooperate with the elastic part to support the first sealing part 411. In this embodiment, the first elastic part 42 is arranged at the periphery of the clamping assembly 412 and one end of the first elastic part 42 abuts against the clamping assembly 412. During the process that the adjusting module 40 is forced to move downward to the fourth working position for shielding the top opening of the first flow passage 31, the elastic part is forced to drive the clamping assembly 412 and the first sealing part 411 to move downward, so that the first sealing surface abuts against the top of the first flow passage 31 to shield the top opening of the first flow passage 31 and form a pressure relief air path. When the pressure in the first chamber 111 is at the second preset pressure, the elastic force of the elastic part of the adjusting module 40 on the first sealing part 411 is greater than the pressure in the first chamber 111, so that the first elastic part 42 drives the first sealing part 411 and the clamping assembly 412 to move upward to the bottom of the first communication part 121 to open the first flow passage 31 and close the first communication part 121 to form a full opening air path. Therefore, the oil tank isolation valve 100 forms a pressure relief air path when the pressure in the first chamber 111 is too high to reduce the pressure in the first chamber 111, and forms a full opening air path when the pressure in the first chamber 111 reaches the second preset pressure to improve the pressure reduction rate of the oil tank isolation valve 100, so that the vehicle 200 can be refueled smoothly. Here, the first sealing part 411 is made of rubber material.
[0066] As shown in the drawings, Figure 4 As shown, in a further embodiment, the blocking part 12 further comprises a plurality of first guide columns 123, the plurality of guide columns are arranged around the first communication part 121 and are uniformly spaced, and the clamping assembly 412 further comprises a clamping sleeve 413 and a plurality of clamping parts 414, the clamping sleeve 413 is fixedly connected with the first sealing part 411, the plurality of clamping parts 414 are arranged around the first sealing part 411 and are uniformly spaced, and each clamping part 414 comprises a clamping groove cooperating with the first guide column 123. In this embodiment, the first guide column 123 is arranged to protrude into the second chamber 112 from the bottom of the blocking part 12, and the clamping groove of the clamping part 414 is arranged to cooperate with the first guide column 123, so that the clamping part 414 moves upward or downward relative to the first guide column 123 when the adjusting assembly moves between the third working position and the fourth working position. The arrangement of the first guide column 123 is used to guide the movement of the adjusting module 40 and avoid the situation that the adjusting module 40 deviates when it is forced to move downward, which causes the first communication part 121 or the first flow passage 31 to be unable to be closed. Here, the clamping sleeve 413 and the first sealing part 411 can be connected by vulcanization process.
[0067] In the embodiment, the number of the engaging members 414 is three, the three engaging members 414 are evenly arranged on the circumferential side of the sleeve 413, and each of the engaging members 414 is engaged with the corresponding first guide column 123 to ensure the area of the sliding surface, i.e., the contact area of the engaging member 414 and the first guide column 123, in the case of minimizing the flow area as much as possible. Here, the end of the engaging member 414 protruding towards the first guide column 123 forms a pincer half-enclosing structure, i.e., the first guide column 123 is arranged in pincer half-enclosing connection with the engaging groove of the engaging member 414 to increase the contact area of the first guide column 123 and the engaging member 414.
[0068] In the embodiment, the sleeve 413 includes a supporting part and a sliding part, the supporting part cooperates with the engaging member 414 and the first sealing member 411 to mount the engaging member 414 and the first sealing member 411, and the sliding part is arranged to cooperate with the first flow passage 31 and includes a plurality of supporting legs to provide a supporting action to the supporting part while moving in the vertical direction in cooperation with the first flow passage 31, the diameter of the supporting leg is any value in the range of 1.0 mm-2.0 mm to ensure the flow interface area of the adjusting module 40, so that the engaging assembly 412 has sufficient supporting area when moving downward and does not deviate or misplace when moving. Here, the engaging member 414 is a pincer half-enclosing sliding rib, and the diameter of the supporting leg can be 1.0 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.45 mm, 1.5 mm, 1.55 mm, 1.6 mm, 1.8 mm or 2.0 mm, or any value in the range of 1.0 mm-2.0 mm.
[0069] As shown in Figure 6 In a further embodiment, the oil tank isolation valve 100 further includes a second guide column 50, the breather module 20 further includes an armature 22 and a second elastic member 23, the armature 22 includes a vertical part 221 and a horizontal part 222, the vertical part 221 is formed with a guide groove 223 and a mounting groove 224, the guide groove 223 is arranged in the mounting groove 224, the second elastic member 23 is located in the mounting groove 224, and the second elastic member 23 is sleeved on the circumferential side of the second guide column 50. In the embodiment, the second guide column 50 is located in the guide groove 223, the second elastic member 23 is located in the mounting groove 224, and the second elastic member 23 is sleeved on the circumferential side of the second guide column 50, the second guide column 50 is arranged to cooperate with the second elastic member 23 to drive the armature 22 to reciprocate up and down when energized, thereby realizing the conduction of the pressure relief air path and the full open air path of the oil tank isolation valve 100. Here, the two ends of the second elastic member 23 abut against the two ends of the mounting groove 224 to fix the second elastic member 23.
[0070] As shown in Figure 6As shown, in a further embodiment, the ventilation module 20 further includes a second sealing member 24, which is sleeved on the periphery of the horizontal portion 222, and the bottom of the second sealing member 24 forms a second sealing surface for sealing the second connecting portion 122. The second sealing member 24 has a through hole corresponding to the exhaust channel 21. In this embodiment, the through hole of the second seal 24 is respectively provided with the first connecting part 121 and the exhaust channel 21, so that the oil-gas mixture in the first chamber 111 flows sequentially through the exhaust channel 21, the through hole and the first connecting part 121 when the ventilation module 20 is in the first working position, and flows into the second chamber 112 to form a pressure relief air path in the fuel tank isolation valve 100. At this time, the first seal 411 is located on the top of the barrier 12 to close the second connecting part 122, that is, the second sealing surface abuts against the top of the barrier 12, so as to prevent the exhaust pollution from failing to meet the standard when the pressure in the first chamber 111 is too high and flows directly into the second chamber 112 from the second flow part, thereby improving the environmental performance of the vehicle 200. Here, the material of the second seal 24 is rubber.
[0071] like Figure 1 As shown, in a further embodiment, the tank isolation valve 100 also includes a limiting member 60, which is located inside the housing 10. A limiting space is formed within the limiting member 60, which is used to install the venting module 20. The limiting member 60 also includes a limiting surface for limiting the armature 22. In this embodiment, the limiting space is used to install the venting module 20, so that the venting module 20 moves up and down along the limiting space when energized, causing the second sealing member 24 to switch back and forth between the first working position and the second working position of opening or closing the second connecting part 122. This allows the tank isolation valve 100 to form a pressure relief air passage or a fully open air passage. The limiting surface is set at a preset distance from the top surface of the horizontal part 222 of the armature 22 to prevent the armature 22 from being moved upward too far due to force, causing the top of the armature 22 to make hard contact with the housing 10 and be damaged. Here, the top of the limiting member 60 is also provided with a clearance groove, which is configured to provide clearance space for the armature 22 when the armature 22 moves upward, so as to avoid the armature 22 from contacting and being damaged by the limiting member 60.
[0072] like Figure 6As shown, in a further embodiment, the vertical portion 221 is formed with a plurality of first through holes, the horizontal portion 222 includes a second through hole, and the plurality of first through holes and the second through hole are communicated to form the exhaust passage 21. In this embodiment, the plurality of first through holes are uniformly arranged at the bottom of the vertical portion 221, the second through hole is arranged through the horizontal portion 222 in the vertical direction, and the plurality of first through holes are respectively communicated with the second through hole to form the exhaust passage 21 for discharging the oil-gas mixture in the first chamber 111 into the second chamber 112, thereby forming a pressure relief passage through the exhaust passage 21 when the pressure in the first chamber 111 is too high. Here, the first through hole is in an arc structure. In other embodiments, the first through hole can also be in an inverted L-shaped structure.
[0073] Figure 10 is a schematic partial structural diagram of a vehicle according to yet another embodiment of the present application.
[0074] As Figure 10 shown, the present application also provides a vehicle 200, which further comprises the fuel tank isolation valve 100 of any one of the above. Regarding the fuel tank isolation valve 100, no further elaboration will be given here.
[0075] In this embodiment, the vehicle 200 further comprises a carbon canister 210 and a fuel tank 220, the carbon canister 210 is connected with the carbon canister connecting end 14 of the fuel tank isolation valve 100, the carbon canister 210 is used to store or discharge the oil-gas mixture to reduce the pressure in the first chamber 111, and the fuel tank 220 is connected with the fuel tank connecting end 13. In this embodiment, the fuel tank 220 and the carbon canister 210 are connected through the fuel tank isolation valve 100, that is, the oil-gas mixture in the fuel tank 220 first flows into the first chamber 111 to form a pressure maintaining state, and when the pressure in the first chamber 111 reaches a first preset pressure, a pressure relief passage is formed in the fuel tank isolation valve 100 to reduce the pressure in the first chamber 111 and the fuel tank 220, thereby avoiding the situation that the pressure in the fuel tank 220 is too high to increase the safety hazard. When the pressure in the first chamber 111 reaches a second preset pressure value, the breather module 20 is forced to move upward to open the second communication portion 122 and form a full open passage, so that the flow rate of the oil-gas mixture reaches a preset flow rate, thereby ensuring that the pressure in the fuel tank 220 is reduced as soon as possible without affecting refueling, and improving the discharge rate of the oil-gas mixture of the fuel tank isolation valve 100.
[0076] In this embodiment, when the fuel tank 220 is in a negative pressure state, air is transported to the carbon canister connecting end 14 through the carbon canister 210, and then transported into the first chamber 111, thereby increasing the pressure in the fuel tank 220 and avoiding the situation that the fuel tank 220 shell 10 is deformed under stress when the pressure in the fuel tank 220 is less than the atmospheric pressure, thereby improving the service life and quality of the vehicle 200.
[0077] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, as long as the combination of the technical features does not exist in contradiction, it shall be considered as within the scope of the present disclosure.
[0078] The above-described embodiments only express several implementation manners of the present application, the description is relatively specific and detailed, but it shall not be understood as a limitation on the scope of the present application patent. It should be pointed out that, for ordinary skilled in the art, under the premise of not departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent shall be subject to the appended claims.
Claims
1. A dual pass automotive tank isolation valve characterized by, The oil tank isolation valve comprises: a housing in which a ventilation chamber is formed; a partitioning piece for dividing the ventilation chamber into a first chamber and a second chamber, the partitioning piece further comprising a first communication part and a second communication part, both of which communicate the first chamber and the second chamber, the first chamber further comprising an oil tank connecting end communicating with an oil tank; a ventilation module movably arranged in the first chamber, the ventilation module being configured to close the second communication part when moved to a first working position and open the second communication part when moved to a second working position, the ventilation module comprising at least one exhaust passage arranged to communicate the first communication part and the first chamber when the ventilation module is in the first working position; a flow-through module for dividing the second chamber into an inlet chamber and an outlet chamber, the inlet chamber communicating with both the first communication part and the second communication part, the outlet chamber communicating with a carbon canister connecting end, the flow-through module comprising a first flow-through passage and a second flow-through passage, both of which communicate the inlet chamber and the outlet chamber; an adjustment module movably arranged in the inlet chamber, the adjustment module being configured to form a state of only closing the first communication part when moved to a third working position and form a state of shielding a top opening of the first flow-through passage when moved to a fourth working position.
2. The oil tank isolation valve according to claim 1, wherein: the adjustment module comprises a moving piece and a first elastic piece, the first elastic piece being configured to urge the moving piece to move to the third working position when a pressure in the first chamber is at a first preset pressure, so that a pressure relief air path in which the first chamber, the exhaust passage, the first communication part, the second flow-through passage are sequentially communicated is formed when the moving piece is in the third working position and the ventilation module is in the first working position; the first elastic piece is configured to urge the moving piece to move to the fourth working position when a pressure in the first chamber is at a second preset pressure, so that a full-open air path in which the first chamber, the exhaust passage, the second communication part, the first flow-through passage and the second flow-through passage are sequentially communicated is formed when the moving piece is in the fourth working position and the ventilation module is in the second working position.
3. The oil tank isolation valve according to claim 2, wherein: a plurality of the second flow-through passages are evenly arranged at a periphery of the first flow-through passage.
4. The oil tank isolation valve according to claim 3, characterized in that the moving piece further comprises: a first sealing piece for forming the first sealing surface; a clamping assembly connected with the first sealing piece, the clamping assembly being arranged to cooperate with the elastic piece to support the first sealing piece.
5. The oil tank isolation valve according to claim 4, characterized in that the partitioning piece further comprises a plurality of first guide columns, the plurality of first guide columns being evenly arranged around the first communication part, and the clamping assembly further comprises: a clamping sleeve fixedly connected with the first sealing piece. A plurality of clamping members are arranged around the first sealing member and are uniformly spaced apart, each of the clamping members comprising a clamping slot matched with the first guide column.
6. The oil tank isolation valve according to any one of claims 1 to 5, characterized in that The oil tank isolation valve further comprises a second guide column, and the breather module further comprises: An armature comprises a vertical portion and a horizontal portion, the vertical portion is formed with a guide slot and a mounting slot, the guide slot is arranged in the mounting slot, and the guide slot is arranged to be matched with the second guide column; A second elastic member is arranged in the mounting slot, and the second elastic member is sleeved on the periphery of the second guide column.
7. The oil tank isolation valve according to claim 6, characterized in that The breather module further comprises: A second sealing member is sleeved on the periphery of the horizontal portion, and a bottom of the second sealing member is formed with a second sealing surface for sealing the second communication portion, and the second sealing member is formed with a through hole corresponding to the exhaust passage.
8. The oil tank isolation valve according to claim 7, characterized in that Further comprising: A limiting member is arranged in the housing, a limiting space is formed in the limiting member, and the limiting space is used for mounting the breather module, and the limiting member further comprises a limiting surface for limiting the armature.
9. The oil tank isolation valve according to claim 8, wherein The vertical portion is formed with a plurality of first through holes; The horizontal portion comprises a second through hole; The first through hole and the second through hole are communicated to form the exhaust passage.
10. A vehicle characterized by comprising: The vehicle further comprises: A carbon tank is connected with the carbon tank connecting end of the oil tank isolation valve, and the carbon tank is used for storing or discharging an oil gas mixture to reduce the pressure in the first cavity; An oil tank is connected with the oil tank connecting end.