CN114776863A - A refuel limit valve for on fuel tank - Google Patents
A refuel limit valve for on fuel tank Download PDFInfo
- Publication number
- CN114776863A CN114776863A CN202210300196.0A CN202210300196A CN114776863A CN 114776863 A CN114776863 A CN 114776863A CN 202210300196 A CN202210300196 A CN 202210300196A CN 114776863 A CN114776863 A CN 114776863A
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- Prior art keywords
- valve
- lower cover
- rotating shaft
- oil
- valve plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002828 fuel tank Substances 0.000 title claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 230000009471 action Effects 0.000 claims abstract description 11
- 239000000446 fuel Substances 0.000 claims description 7
- 238000003745 diagnosis Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 90
- 238000007789 sealing Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K21/00—Fluid-delivery valves, e.g. self-closing valves
- F16K21/04—Self-closing valves, i.e. closing automatically after operation
- F16K21/18—Self-closing valves, i.e. closing automatically after operation closed when a rising liquid reaches a predetermined level
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
- F16K15/033—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member spring-loaded
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/03256—Fuel tanks characterised by special valves, the mounting thereof
- B60K2015/03269—Flap valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/03256—Fuel tanks characterised by special valves, the mounting thereof
- B60K2015/03289—Float valves; Floats therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The invention relates to a refueling limit valve used on a fuel tank, which comprises a valve body, a lower cover sleeved at the lower part of the valve body and an upper cover sleeved at the upper part of the valve body, wherein a plurality of oil inlet windows are arranged on the side surface of the lower cover, and a large round hole is arranged in the center of the end surface of the lower cover; the method is characterized in that: a torsion spring seat and two rotating shaft seats which are in mirror symmetry are arranged at the edge of the large round hole close to the lower cover; the torsional spring seat is positioned between the two rotating shaft seats; valve plate mechanisms are arranged on the two rotating shaft seats; the valve plate mechanism can close the large round hole under the action of self elasticity; the valve plate mechanism is characterized in that oil enters the lower cover through an oil inlet window of the lower cover, and the valve body rises under the action of buoyancy and is attached to the upper cover; when the height of the oil level of the valve plate mechanism in the lower cover reaches a certain height compared with the height of the oil level outside the oil filling metering valve, the valve plate mechanism is separated from the large round hole. The invention can accurately control the oil filling amount, and avoid that the oil liquid shakes to enter the oil filling limit valve, so that the closing time is longer, and the OBD diagnosis fails or is misinformed.
Description
Technical Field
The invention relates to an automobile fuel system, in particular to a refueling limit valve used on a fuel tank.
Background
The oil filling limit valve is used for an automobile fuel system, the oil filling limit valve is communicated with the atmosphere when opened, and air in an oil tank is discharged through the oil filling limit valve. When the oil is filled, the oil filling limit valve is closed when the liquid level in the oil tank rises to a certain height, air in the oil tank cannot be discharged, the pressure rises, and fuel oil is accumulated in the oil filling pipe to cause the gun jump during oil filling so as to realize the control of the oil filling amount. The existing refueling metering valve comprises an original lower cover 10, a valve core 20 and an original upper cover 30, wherein a window 101 is formed in the middle of the original lower cover, and the original upper cover 30 is communicated with the atmosphere. The gas in the fuel tank enters the refueling metering valve through the window 101 on the original lower cover and is discharged from the original upper cover 30. When the liquid level in the oil tank exceeds the window 101 on the original lower cover, the oil enters the original lower cover 10 to provide buoyancy for the valve core 20, so that the valve core moves upwards, and after the valve core 20 is contacted with the original upper cover 30, the vent hole of the original upper cover is blocked, the oil filling limit valve is closed, and the gas in the oil tank cannot be discharged. When the liquid level of the oil tank is high, oil liquid rocks to enter the original lower cover 10 through the window 101 of the original lower cover in the running process of the vehicle, so that the oil filling limit valve is closed. Because the diameter of the small end face hole 102 on the original lower cover is smaller, oil cannot be discharged in time, and the oil filling metering valve is in a closed state for a long time. When the OBD diagnoses the driving vacuum, because the oiling limit valve is in a closed state for a long time, the air in the oil tank can not be effectively pumped out to establish negative pressure, and the OBD diagnoses the fault of the evaporating system by mistake. If the diameter of the opening on the end face of the original lower cover 10 is enlarged, liquid enters the oil filling metering valve through the opening at the bottom of the original lower cover 10 in the oil filling process. When the liquid level does not reach the set oil filling amount (the liquid level height reaches the window height of the oil filling limit valve), more liquid is already in the oil filling limit valve, the valve core 20 has enough buoyancy to be in contact with the original upper cover for sealing, so that the oil filling limit valve is closed in advance, and the set oil filling amount cannot be achieved at this time. Therefore, improvements in existing refueling metering valves are desired.
CN 210014077U discloses "a fuel filling limit valve welded on a fuel tank", which includes: the upper cover, the sealing ring, the valve body, the floater assembly and the lower cover; the valve body is sleeved outside the floater assembly, and the lower part of the floater assembly is contacted with the bottom of the lower cover through a spring; the lower cover is sleeved outside the valve body and fixedly connected to the bottom of the upper cover; the center of the top of the valve body is provided with a center hole, and the edge of the top of the valve body is provided with a sealing ring to seal the valve body matching surface inside the upper cover; the central hole is communicated with the inner cavity of the upper cover, and the top of the floater assembly can reciprocate in the valve body to close or open the central hole; the bottom of upper cover is fixed in on the oil tank and the lower cover is located the oil tank, is provided with the window on the lower cover so that can communicate between the inner chamber of oil tank, upper cover. The fuel filling limit valve enables a fuel system to meet the fuel filling requirement and evaporative emission requirement of the national six regulations and can also meet the basic functional requirements of gas exhaust and gas supplement of a fuel tank system.
CN 210770489U discloses a built-in refueling metering valve used on an oil tank, wherein a flange used for connecting the inner wall of the oil tank is arranged at the outer top end of a valve body; a concave ring is convexly formed upwards on the upper surface of the base, the bottom end of the valve body is clamped in the concave ring, a through hole is formed in the pipe column on the base, a groove is formed in the bottom of the floater assembly, a convex column which floats up and down in the pipe column is formed in the groove, and a spring is sleeved on the pipe column; the upper portion rigid coupling in the valve body has the baffle, and tracheal one end runs through in the baffle stretches into the cavity that forms between valve body and the base, and the other end extends to the outside from the lateral wall of valve body, and the top of float assembly is provided with little float, and the center of little float is provided with the sealing member, and the upper end of sealing member is formed with the horn mouth that can closed trachea tip. The built-in oiling limit valve is arranged in the oil tank, plays roles of oiling and exhausting and rated volume control, and can control air intake and exhaust of the oil tank along with the internal pressure of the oil tank.
Needless to say, the technical solutions disclosed in both patent documents are a useful attempt in the art.
Disclosure of Invention
The invention aims to provide a refueling limit valve for a fuel tank, which can accurately control the refueling amount and avoid that the oil sloshing enters the refueling limit valve to cause the closing time to be longer, so that OBD diagnosis is failed or misinformation is caused.
The invention relates to a refueling metering valve used on a fuel tank, which comprises a valve body, a lower cover sleeved at the lower part of the valve body and an upper cover sleeved at the upper part of the valve body, wherein the side surface of the lower cover is provided with a plurality of oil inlet windows, and the center of the end surface of the lower cover is provided with a large round hole, and the refueling metering valve is characterized in that: a torsion spring seat and two rotating shaft seats which are in mirror symmetry are arranged at the edge of the large round hole close to the lower cover; the torsion spring seat is positioned between the two rotating shaft seats, and the distance between the torsion spring seat and the center of the big circular hole is greater than the distance between the rotating shaft seat and the center of the big circular hole; the two rotating shaft seats are respectively provided with a rotating shaft hole; valve plate mechanisms are arranged on the two rotating shaft seats;
the valve plate mechanism can seal the large round hole under the action of self elasticity when the height of the liquid level of the oil in the lower cover is lower than that of the liquid level of the oil outside the oil filling limit valve;
the valve plate mechanism enables oil to enter the lower cover through the oil inlet window of the lower cover, the valve body rises under the action of buoyancy and is attached to the upper cover, and the refueling metering valve is closed;
when the height of the oil level of the valve plate mechanism in the lower cover reaches a certain height compared with the height of the oil level outside the oil filling metering valve, the pressure of oil acting on the valve plate mechanism is larger than the self elasticity of the valve plate mechanism, and the valve plate mechanism is separated from the large round hole.
Furthermore, the valve plate mechanism comprises a valve plate, a torsion spring and a rotating shaft, two parallel valve plate rotating arms are fixedly connected to the lower surface of the valve plate, and the end parts of the two valve plate rotating arms are respectively provided with a through hole; the rotating shaft penetrates through a rotating shaft hole arranged on the rotating shaft seat, a through hole of a rotating arm of the valve plate and the torsion spring; the first end of the torsion spring is abutted against the lower surface of the valve plate, and the second end of the torsion spring is abutted against the torsion spring seat on the end surface of the lower cover.
Further, the rotating shaft is in interference fit with the rotating shaft hole in the rotating shaft seat; the rotating shaft is in clearance fit with the torsion spring and the through hole on the rotating arm of the valve plate; the valve plate and the torsion spring can rotate around the rotating shaft.
Furthermore, the diameter of a large round hole on the end face of the lower cover is larger than that of a small hole on the end face of the existing oiling limit valve. The diameter of the large round hole (12) is 5 mm-15 mm.
The invention has the beneficial effects that:
because set up the great big round hole of a diameter at the lower cover terminal surface that refuels the limit valve, when the inside oil liquid level height of valve body was higher than the outside oil liquid level height of valve body, fluid can flow out from big round hole very fast, can avoid fluid to rock and get into refuels the limit valve, makes to refuel the limit valve closing time longer, leads to OBD diagnosis failure or wrong report.
Because the one-way valve plate mechanism door is arranged at the large round hole on the end surface of the lower cover of the oiling limit valve, when the height of the oil level inside the oiling limit valve is lower than that of the oil level outside the oiling limit valve, oil cannot enter the oiling limit valve through the large round hole on the end surface of the lower cover of the oiling limit valve, and the phenomenon that the gun is advanced and jumped when oiling is caused because the oil enters the oiling limit valve from the large round hole in the oiling process can be prevented.
Because the big round hole diameter of lower cover terminal surface, the elasticity of torsional spring and the weight of valve block can be adjusted as required to change the time of reopening after refueling limit valve closes, can satisfy the OBD when diagnosing, refuel the requirement that limit valve can not close for a long time.
Drawings
Fig. 1 is a perspective view of a prior art refueling metering valve.
FIG. 2 is a perspective view of the valve plate mechanism of the present invention in a closed state;
FIG. 3 is an exploded view of the valve plate mechanism;
FIG. 4 is a schematic view of the valve plate mechanism disposed on the end surface of the lower cover;
FIG. 5 is a perspective view of the valve plate structure of the present invention in an open state.
In the figure (technical feature notation):
10-original lower cover, 101-window, 102-end surface small hole, 20-valve core, 30-original upper cover;
1-lower cover, 11-oil inlet window, 12-big round hole, 13-torsion spring seat, 14-rotating shaft seat, 140-rotating shaft hole;
2-valve body;
3, covering the cover;
4-valve plate, 41-valve plate rotating arm, 410-via hole;
5-torsion spring, 51-first end, 52-second end;
6-a rotating shaft.
Detailed Description
The technical scheme of the invention is described in detail in the following with reference to the accompanying drawings.
Referring to fig. 2 to 5, the refueling limit valve for the fuel tank comprises a valve body 2, a lower cover 1 sleeved at the lower part of the valve body, and an upper cover 3 sleeved at the upper part of the valve body, wherein a plurality of oil inlet windows 11 are arranged on the side surface of the lower cover 1, and a large round hole 12 is arranged at the center of the end surface of the lower cover (1), and is characterized in that: a torsion spring seat 13 and two rotating shaft seats 14 which are in mirror symmetry are arranged at the edge of the large round hole 12 close to the lower cover 1; the torsion spring seat 13 is positioned between the two rotating shaft seats 14, and the distance between the torsion spring seat 13 and the center of the large round hole (12) is greater than the distance between the rotating shaft seat 14 and the center of the large round hole (12); the two rotating shaft seats 14 are respectively provided with a rotating shaft hole 140; the two rotating shaft seats 14 are provided with valve plate mechanisms;
when the liquid level of the oil in the lower cover 1 of the valve plate mechanism is lower than the liquid level of the oil outside the oil filling limit valve, the valve plate mechanism can seal the large round hole 12 under the action of self elasticity; the oil outside the oil filling limit valve is limited to enter the lower cover through the large round hole in the lower cover, so that the oil filling limit valve is prevented from being closed in advance during oil filling, and the oil filling amount is accurately controlled;
the valve plate mechanism is characterized in that oil enters the lower cover 1 through the oil inlet window 11 of the lower cover 1, the valve body 2 rises under the action of buoyancy force and is attached to the upper cover 3, and the refueling metering valve is closed;
when the height of the liquid level of the oil in the lower cover 1 of the valve plate mechanism is higher than the height of the liquid level of the oil outside the oil filling limit valve by a certain height, the pressure of the oil acting on the valve plate mechanism is larger than the self elasticity of the valve plate mechanism, and the valve plate mechanism is separated from the large round hole 12; make the fluid body of fluid in the lower cover flow through big round hole to avoid refueling limit valve closing time overlength, lead to OBD diagnosis failure or wrong report.
The valve plate mechanism comprises a valve plate 4, a torsion spring 5 and a rotating shaft 6, two parallel valve plate rotating arms 41 are fixedly connected to the lower surface of the valve plate 4, and the end parts of the two valve plate rotating arms 41 are respectively provided with a through hole 410; the rotating shaft 6 passes through the rotating shaft hole 140 arranged on the rotating shaft seat 14, the through hole 410 of the valve plate rotating arm 41 and the torsion spring 5; the first end 51 of the torsion spring 5 abuts against the lower surface of the valve plate 4, and the second end 52 abuts against the torsion spring seat 13 on the end surface of the lower cover 1.
The rotating shaft 6 is in interference fit with the rotating shaft hole 140 on the rotating shaft seat 14; the rotating shaft 6 is in clearance fit with the torsion spring 5 and the through hole 410 on the rotating arm 41 of the valve plate; the valve plate 4 and the torsion spring 5 can rotate around the rotating shaft 6.
The diameter of the big round hole 12 on the end face of the lower cover 1 is larger than that of the end face small hole of the existing oiling limit valve, the diameter of the big round hole 12 is 5 mm-15 mm, and the regulation can be calibrated according to OBD. The diameter of the big round hole on the regulation lower cover, the bullet of torsional spring, the weight of valve block can change the time of refueling limit valve reopening after closing, when satisfying the OBD diagnosis, refuels the requirement that the limit valve can not close for a long time. The valve plate and the lower cover are reliably attached and sealed in consideration of the adjustment of the parameters, and the requirement on sealing performance is met.
In the normal oiling process, when the oil level in the lower cover 1 of the oiling limit valve is lower than the external liquid level of the oiling limit valve, the valve plate mechanism is attached to the lower cover 1 under the action of the pretightening force of the torsion spring 5, and the large hole 12 of the lower cover is blocked by the valve plate 4. At this moment, the liquid outside the oil filling limit valve can not enter the lower cover 1 of the oil filling limit valve through the large hole 12 of the lower cover, and the oil filling limit valve can not be closed in advance when oil is filled.
When the vehicle runs and rocks, oil enters the oil filling limit valve through the oil inlet window 11 of the lower cover 1 of the oil filling limit valve, the valve body 2 is attached to the upper cover 3 under the action of buoyancy, and the oil filling limit valve is closed. At this moment, the height of the oil liquid level in the lower cover 1 is higher than that of the oil liquid level outside the oil filling limit valve, the pressure of oil acting on the valve block 4 is larger than the pretightening force of the torsion spring 5, the valve block 4 rotates around the rotating shaft 6 to be opened, a gap is reserved between the valve block 4 and the lower cover 1, and the liquid in the oil filling limit valve flows out through the large round hole 12 of the lower cover. When the oil level drops to a certain height, the pressure of the oil acting on the valve plate 4 is equal to the pretightening force of the torsion spring 5, the valve plate 4 is closed, and the oil cannot pass through the large round hole 12 on the lower cover.
When the liquid level in the oil filling limit valve drops to a certain height, the gravity of the valve body 2 is larger than the buoyancy, the valve body 2 is separated from the upper cover 3 under the action of the buoyancy, and the oil filling limit valve is opened.
Because the diameter of the large round hole on the lower cover is far larger than that of the small hole on the end face of the existing oiling limit valve, the time from closing to opening of the oiling limit valve is far shorter than that of the oiling limit valve. The diameter of the large round hole on the lower cover, the elasticity of the torsion spring and the weight of the valve plate are adjusted, so that the time for reopening the oil filling metering valve after being closed can be changed. When the OBD diagnoses is satisfied, the requirement that the oiling limit valve can not be closed for a long time is met. The valve plate 4 and the lower cover 1 are reliably attached and sealed when the parameters are adjusted, and the requirement of sealing performance is met.
Claims (4)
1. The utility model provides a refuel limit valve for on fuel tank, includes valve body (2), the cover establish lower cover (1), the cover of valve body lower part establish upper cover (3) on valve body upper portion the side of lower cover (1) is equipped with a plurality of oil feed windows (11) the center of the terminal surface of lower cover (1) is equipped with big round hole (12), characterized by: a torsion spring seat (13) and two rotating shaft seats (14) which are in mirror symmetry are arranged at the edge of a large round hole (12) close to the lower cover (1); the torsion spring seat (13) is positioned between the two rotating shaft seats (14), and the distance between the torsion spring seat (13) and the center of the large round hole (12) is greater than the distance between the rotating shaft seat (14) and the center of the large round hole (12); the two rotating shaft seats (14) are respectively provided with a rotating shaft hole (140); valve plate mechanisms are arranged on the two rotating shaft seats (14);
the valve plate mechanism can seal the large round hole (12) under the action of self elasticity when the height of the oil liquid level in the lower cover (1) is lower than that of the oil liquid level outside the oil filling limit valve;
when oil enters the lower cover (1) through the oil inlet window (11) of the lower cover (1), the valve body (2) rises under the action of buoyancy and is attached to the upper cover (3), so that the oil filling limit valve is closed;
when the height of the oil liquid level of the valve plate mechanism in the lower cover (1) is higher than the height of the oil liquid level outside the oil filling limit valve to a certain height, the pressure of oil acting on the valve plate mechanism is larger than the self elasticity of the valve plate mechanism, and the valve plate mechanism is separated from the large round hole (12).
2. The fuel filling limit valve for a fuel tank as set forth in claim 1, wherein: the valve plate mechanism comprises a valve plate (4), a torsion spring (5) and a rotating shaft (6), two parallel valve plate rotating arms (41) are fixedly connected to the lower surface of the valve plate (4), and the end parts of the two valve plate rotating arms (41) are respectively provided with a through hole (410); the rotating shaft (6) penetrates through a rotating shaft hole (140) arranged on the rotating shaft seat (14), a through hole (410) of a valve plate rotating arm (41) and the torsion spring (5); the first end (51) of the torsion spring (5) is abutted against the lower surface of the valve plate (4), and the second end (52) of the torsion spring is abutted against the torsion spring seat (13) on the end surface of the lower cover (1).
3. A fill limit valve for a fuel tank as set forth in claim 2 wherein: the rotating shaft (6) is in interference fit with a rotating shaft hole (140) on the rotating shaft seat (14); the rotating shaft (6) is in clearance fit with the torsion spring (5) and a through hole (410) on the rotating arm (41) of the valve plate; the valve plate (4) and the torsion spring (5) can rotate around the rotating shaft (6).
4. A fill limit valve for a fuel tank as set forth in claim 2 wherein: the diameter of a large round hole (12) on the end face of the lower cover (1) is larger than that of a small hole on the end face of the existing oil filling limit valve, and the diameter of the large round hole (12) is 5-15 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210300196.0A CN114776863A (en) | 2022-03-25 | 2022-03-25 | A refuel limit valve for on fuel tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210300196.0A CN114776863A (en) | 2022-03-25 | 2022-03-25 | A refuel limit valve for on fuel tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114776863A true CN114776863A (en) | 2022-07-22 |
Family
ID=82425821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210300196.0A Pending CN114776863A (en) | 2022-03-25 | 2022-03-25 | A refuel limit valve for on fuel tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114776863A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0932671A (en) * | 1995-07-12 | 1997-02-04 | Walbro Corp | Fuel supply-vaporized fuel recovery controller |
| US5887615A (en) * | 1996-09-27 | 1999-03-30 | Om Corporation | Check valve of fuel tank |
| JP2007008295A (en) * | 2005-06-29 | 2007-01-18 | Piolax Inc | Fuel check valve |
| JP2009079752A (en) * | 2007-09-27 | 2009-04-16 | Toyoda Gosei Co Ltd | Fuel shut-off valve |
| CN108006273A (en) * | 2017-12-28 | 2018-05-08 | 上汽通用五菱汽车股份有限公司 | A kind of oiling check valve |
| CN109578642A (en) * | 2019-01-22 | 2019-04-05 | 苏州市振业实业有限公司 | A kind of oil tank liquid level control valve of integrated check valve |
| CN215059769U (en) * | 2021-07-16 | 2021-12-07 | 重庆彤乐机械有限公司 | ICV check valve |
| CN215751901U (en) * | 2021-05-31 | 2022-02-08 | 比亚迪股份有限公司 | Fuel tank assembly and vehicle |
-
2022
- 2022-03-25 CN CN202210300196.0A patent/CN114776863A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0932671A (en) * | 1995-07-12 | 1997-02-04 | Walbro Corp | Fuel supply-vaporized fuel recovery controller |
| US5887615A (en) * | 1996-09-27 | 1999-03-30 | Om Corporation | Check valve of fuel tank |
| JP2007008295A (en) * | 2005-06-29 | 2007-01-18 | Piolax Inc | Fuel check valve |
| JP2009079752A (en) * | 2007-09-27 | 2009-04-16 | Toyoda Gosei Co Ltd | Fuel shut-off valve |
| CN108006273A (en) * | 2017-12-28 | 2018-05-08 | 上汽通用五菱汽车股份有限公司 | A kind of oiling check valve |
| CN109578642A (en) * | 2019-01-22 | 2019-04-05 | 苏州市振业实业有限公司 | A kind of oil tank liquid level control valve of integrated check valve |
| CN215751901U (en) * | 2021-05-31 | 2022-02-08 | 比亚迪股份有限公司 | Fuel tank assembly and vehicle |
| CN215059769U (en) * | 2021-07-16 | 2021-12-07 | 重庆彤乐机械有限公司 | ICV check valve |
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