CN110594459B - Integrated oil tank isolation valve - Google Patents
Integrated oil tank isolation valve Download PDFInfo
- Publication number
- CN110594459B CN110594459B CN201910978200.7A CN201910978200A CN110594459B CN 110594459 B CN110594459 B CN 110594459B CN 201910978200 A CN201910978200 A CN 201910978200A CN 110594459 B CN110594459 B CN 110594459B
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- 238000002955 isolation Methods 0.000 title claims abstract description 26
- 238000007789 sealing Methods 0.000 claims abstract description 50
- 230000001502 supplementing effect Effects 0.000 claims abstract description 36
- 238000005192 partition Methods 0.000 claims abstract description 24
- 238000004891 communication Methods 0.000 claims abstract description 6
- 230000000903 blocking effect Effects 0.000 claims abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 238000009423 ventilation Methods 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 25
- 239000000446 fuel Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 239000002828 fuel tank Substances 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000013022 venting Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013524 data verification Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- B60K15/035—Fuel tanks characterised by venting means
- B60K15/03519—Valve arrangements in the vent line
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M25/0836—Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
-
- 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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M2025/0845—Electromagnetic valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The invention relates to an oil tank isolation valve, which comprises a shell, an electromagnetic valve assembly, a gas supplementing valve assembly, a gas releasing valve assembly and a sealing terminal. A first cavity and a second cavity are arranged in the shell, and a partition plate is arranged for partition. And the first channel and the second channel are respectively extended along the first cavity and the second cavity. The partition plate is provided with a central through hole and a circumferential through hole. The air compensating valve component is used for blocking the circumferential through hole, is arranged in the first cavity and is provided with an air compensating cavity communicated with the first channel. The air release valve component is arranged in the second cavity and is provided with an air release cavity communicated with the second channel. The sealing terminal is arranged in the air supplementing cavity, can penetrate through the central through hole and moves under the driving of the electromagnetic valve component so as to determine the separation/communication between the air supplementing cavity and the air leakage cavity. In the initial stage of power supply of the electromagnetic valve assembly, the sealing terminal is displaced by a small distance to release the partition of the air release valve assembly, namely the pressure difference between the air release cavity and the air release cavity is reduced when the air release valve assembly is opened.
Description
Technical Field
The invention relates to the technical field of automobile manufacturing, in particular to an integrated oil tank isolation valve.
Background
In the prior art, in a gasoline vapor discharge system, gasoline vapor generated in a fuel tank is discharged to a canister through a vent valve and is effectively adsorbed by activated carbon therein. After the engine is started, fresh air is sucked into the carbon tank, and fuel steam absorbed by activated carbon in the carbon tank is re-brought into the engine for combustion, so that the fuel efficiency is improved. However, in the plug-in hybrid vehicle type, there is a mode of using electric power for a long time, in which the canister has no desorption function, which is very easy to cause the adsorption capacity of the canister to reach saturation, and thereafter, fuel vapor is directly discharged into the atmosphere, resulting in environmental pollution and fuel waste. In addition, when the automobile is in an electric drive mode for a long time, the fuel is volatilized continuously and accumulated to cause the excessive pressure in the oil tank, so that the oil tank is damaged, and the valve is required to have an automatic pressure relief function. Or the fuel in the fuel tank is used faster, so that the air pressure in the fuel tank is too small, and the fuel tank is damaged by extrusion of the external atmospheric pressure. The above problems have long plagued technicians.
Chinese patent No. CN107084267a discloses a highly integrated tank isolation valve, in which a cavity is provided in a housing, a first channel is provided on a side wall of the cavity, and a gas-compensating valve assembly and a gas-releasing valve assembly are coaxially and integrally installed in the cavity; the valve core of the air compensating valve component is movably arranged in the cavity, the valve core is provided with a second channel and a third channel, the second channel and the third channel are respectively communicated with the first channel and the oil tank, a valve opening compression spring is arranged on the valve core, and a first sealing element is arranged on the valve core; the sliding block of the air release valve assembly is movably arranged on the valve core, the air release compression spring is arranged on the sliding block, and the second sealing element is arranged on the sliding block; the solenoid valve assembly is arranged below the air compensating valve assembly and the air compensating valve assembly in the cavity, and is arranged coaxially with the air compensating valve assembly up and down, a movable iron core of the solenoid valve assembly is movably arranged on the electromagnet, a reset compression spring is arranged on the movable iron core, and a third sealing element is arranged on the movable iron core (as shown in figure 1). However, in the actual operation process, when the solenoid valve assembly is subjected to a negative pressure in the process of dragging the air compensating valve assembly to displace in the axial direction, the load of the solenoid valve assembly is large, so that the opening sensitivity of the air compensating valve assembly cannot meet the use requirement, and the use safety and the service life of the oil tank are affected. Thus, a technician is required to solve the above problems.
Disclosure of Invention
The invention aims to solve the technical problem of providing an integrated oil tank isolation valve which integrates a solenoid valve assembly, a gas supplementing valve assembly and a gas releasing valve assembly and enables the gas supplementing valve assembly to have high opening sensitivity.
In order to solve the technical problems, the invention relates to an integrated oil tank isolation valve, which comprises a shell, an electromagnetic valve assembly, a gas compensating valve assembly, a gas releasing valve assembly and a sealing terminal. A first cavity and a second cavity are arranged in the shell. The first cavity is arranged right above the second cavity and is partitioned by a partition plate. A first channel extends leftwards along the first cavity to communicate with the inner cavity of the oil tank. A second channel extends rightward along the second cavity to communicate with the inner cavity of the carbon tank. The partition plate is provided with a central through hole and a circumferential through hole arranged at the periphery of the central through hole. The air compensating valve assembly is arranged in the first cavity and is internally provided with an air compensating cavity which is always communicated with the first channel. The air compensating valve assembly is elastically pressed against the upper surface of the partition plate to block the ventilation path flowing through the circumferential through hole. The air release valve component is arranged in the second cavity and is always elastically propped against the lower surface of the partition plate, and an air release cavity which is always communicated with the second channel is arranged in the air release valve component. The sealing terminal is arranged in the air supplementing cavity, can penetrate through the central through hole and moves along the axial direction of the sealing terminal under the drive of the electromagnetic valve component so as to control the switching of the blocking/communicating state of the air supplementing cavity and the air releasing cavity.
As a further improvement of the technical scheme of the invention, the air compensating valve assembly comprises a first elastic piece, an air compensating valve body and an air compensating valve seat. The first elastic piece is propped against between the air supplementing valve seat and the air supplementing valve body, so that the air supplementing valve body is always elastically pressed against the upper surface of the partition plate to block the ventilation path flowing through the circumferential through hole. The air supplementing cavity is arranged in the air supplementing valve body.
As a further improvement of the present invention, the air compensating valve assembly further includes a first sealing member fixed to the bottom wall of the air compensating valve body.
As a further development of the solution according to the invention, a first sealing projection in the form of an inclined downwardly extending lug is provided around both the inner and the outer edge of the first sealing element.
As a further improvement of the technical scheme of the invention, the air supplementing valve seat is detachably sleeved and fixed in the first cavity, and a first sealing rubber ring is sleeved around the periphery of the air supplementing valve seat.
As a further improvement of the technical scheme of the invention, the air release valve assembly comprises a second elastic piece, an air release valve body and an air release valve seat. The second elastic piece is propped against between the air release valve seat and the air release valve body, so that the air release valve body is always elastically pressed against the lower surface of the partition plate to block the ventilation path flowing through the central through hole. The air release cavity is arranged in the air release valve body.
As a further improvement of the present invention, the air release valve assembly further includes a second seal member fixed to a top wall of the air release valve body.
As a further development of the solution according to the invention, a second sealing projection in the form of an obliquely upwardly extending lug is provided around both the inner and the outer edge of the second sealing element.
As a further improvement of the technical scheme of the invention, the air leakage valve seat is detachably sleeved and fixed in the second cavity, and a second sealing rubber ring is sleeved around the periphery of the air leakage valve seat.
As a further improvement of the technical scheme of the invention, the diameter of the central through hole is controlled to be 4-5mm.
Compared with the oil tank isolation valve with the traditional design structure, in the technical scheme disclosed by the invention, a central through hole for a sealing terminal to pass through is formed right below the electromagnetic valve assembly. In the initial stage of power supply of the electromagnetic valve assembly, the sealing terminal performs small-distance displacement under the action of the tensile force of the electromagnetic valve assembly to release the partition of the air release valve assembly, so that the air supplementing cavity and the air release cavity are in a communication state, the pressure difference between the air supplementing cavity and the air release cavity is reduced, namely the output force value of the electromagnetic valve assembly required by lifting the air supplementing valve assembly is reduced to a certain extent, the opening sensitivity of the air supplementing valve assembly is improved, and the use safety of the oil tank is ensured.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a prior art integrated tank isolation valve.
Fig. 2 is a schematic perspective view of an integrated tank isolation valve according to the present invention.
Fig. 3 is a schematic structural view (normal state) of the integrated tank isolation valve in the present invention.
Fig. 4 is an enlarged partial view of I of fig. 3.
Fig. 5 is a schematic structural diagram of an integrated tank isolation valve (tank pressure relief state when the solenoid valve assembly is de-energized) according to the present invention.
Fig. 6 is a schematic structural diagram of an integrated tank isolation valve (tank pressure-supplementing state when the solenoid valve assembly is de-energized) according to the present invention.
FIG. 7 is a schematic diagram of the structure of the integrated tank isolation valve of the present invention in a pilot state (solenoid valve assembly is energized)
FIG. 8 is a schematic diagram of the structure of the integrated tank isolation valve of the present invention in a normally open conductive state (solenoid valve assembly is energized)
Fig. 9 is a schematic perspective view of a make-up valve body in an integrated tank isolation valve of the present invention.
Fig. 10 is a schematic perspective view of a vent valve body in an integrated tank isolation valve of the present invention.
Fig. 11 is a schematic perspective view of a seal terminal in an integrated tank isolation valve of the present invention.
1-a housing; 11-a first cavity; 12-a second cavity; 13-a separator; 131-a central through hole; 132-circumferential through holes; 14-a first channel; 15-a second channel; 2-a solenoid valve assembly; 3-a supplemental valve assembly; 31-a qi supplementing cavity; 32-a first elastic member; 33-an air supplementing valve body; 34-an air supplementing valve seat; 35-a first seal; 351-a first sealing protrusion; 36-a first sealing rubber ring; 4-a release valve assembly; 41-venting the cavity; 42-a second elastic member; 43-venting valve body; 44-venting valve seat; 45-a second seal; 451-a second sealing protrusion; 46-a second sealing rubber ring; 5-sealing the terminals.
Detailed Description
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the following, the present invention will be described in further detail with reference to the specific embodiments, and fig. 2 and 3 show a schematic perspective view and a cross-sectional view of an integrated tank isolation valve according to the present invention, respectively, and it is known that the integrated tank isolation valve mainly comprises a housing 1, a solenoid valve assembly 2, a gas compensating valve assembly 3, a gas releasing valve assembly 4, a sealing terminal 5 (as shown in fig. 11), and the like. Wherein, a first cavity 11 and a second cavity 12 are arranged in the shell 1. The first chamber 11 is arranged directly above the second chamber 12 and is partitioned by means of a partition 13. A first channel 14 extends along the first cavity 11 to the left to communicate with the interior of the tank. A second passage 15 extends outwardly to the right along the second chamber 12 to provide communication with the interior of the canister. The partition 13 is provided with a central through hole 131 and a plurality of circumferential through holes 132 circumferentially distributed around the periphery of the central through hole 131. The air compensating valve assembly 3 is disposed in the first cavity 11, and has an air compensating cavity 31 therein, which is always communicated with the first channel 14. The air compensating valve assembly 3 is elastically pressed against the upper surface of the diaphragm 13 to block the ventilation path through the above-mentioned circumferential through hole 132. The air release valve assembly 4 is arranged in the second cavity 12 and is always elastically propped against the lower surface of the partition 13, and an air release cavity 41 which is always communicated with the second channel 15 is arranged in the air release valve assembly. The sealing terminal 5 is disposed in the air-supplementing cavity 31 and can pass through the central through hole 131 to move along the axial direction of the sealing terminal under the driving of the electromagnetic valve assembly 2 so as to control the switching of the blocking/communicating state of the air-supplementing cavity 31 and the air-releasing cavity 41. In this way, the air compensating valve assembly 3, the air releasing valve assembly 4 and the electromagnetic valve assembly 2 are coaxially and integrally arranged in the shell 1, so that the effective isolating valve has simple structure, compact overall layout and convenient manufacture.
The action principle of the integrated oil tank isolation valve is as follows: when the automobile is in a long-term electric drive mode, the fuel is volatilized continuously and accumulated to cause the pressure in the oil tank to be too high, at the moment, the electromagnetic valve assembly 2 is in a power-off state, pressurized oil vapor flows through the air supplementing cavity 31 and the central through hole 131, and then the air release valve assembly 4 is opened (as shown in fig. 5), so that communication with a carbon tank is realized, the phenomenon of overlarge pressure in the oil tank is avoided, and the use safety is ensured. However, when the oil vapor in the oil tank is condensed too quickly, the negative pressure in the oil tank is easily increased, so that the oil tank is compressed and shrunken, by adopting the technical scheme, air and the oil vapor can flow through the circumferential through hole 132 through the carbon tank, and then the air compensating valve assembly 3 is opened (as shown in fig. 6) in a propped manner, so that the oil tank is refluxed, on one hand, the air compensating device can effectively supplement air to the oil tank, the phenomenon of the excessive negative pressure in the oil tank is avoided, and the use safety is ensured. On the other hand, the utilization rate of the fuel oil can be effectively improved. When the automobile is in a long-term fuel driving mode, in the initial stage of power supply of the electromagnetic valve assembly 2, the sealing terminal 5 is subjected to small distance displacement under the action of the tensile force of the electromagnetic valve assembly 2 to release the partition of the air release valve assembly 4, so that the air supplementing cavity 31 and the air release cavity 41 are in a communicated state to form a pilot air passage (as shown in fig. 7), the pressure difference between the air supplementing cavity 31 and the air release cavity 41 is reduced, namely the output force value of the electromagnetic valve assembly 2 required for lifting the air supplementing valve assembly 3 is reduced to a certain extent, the opening sensitivity of the air supplementing valve assembly 3 is improved, the safety of the oil tank is ensured, and then the sealing terminal 5 is subjected to displacement movement again under the driving of the electromagnetic valve assembly 2 to keep the air supplementing valve assembly 3 and the partition 13 to be separated, so that the opening of the conducting air passage between the oil tank and the carbon tank is realized (as shown in fig. 8).
As a further refinement of the structure of the air make-up valve assembly, it is recommended to set with reference to the following scheme: the air make-up valve assembly 3 includes a first resilient member 32, an air make-up valve body 33 (shown in fig. 9), and an air make-up valve seat 34. The first elastic member 32 abuts against between the air supply valve seat 34 and the air supply valve body 33, so that the air supply valve body 33 is always elastically pressed against the upper surface of the partition 13 to block the ventilation path flowing through the circumferential through hole 132. The air-compensating cavity 31 is opened in the air-compensating valve 33 (as shown in fig. 4). In this way, the air compensating valve assembly 3 has a simple structure as far as possible on the premise of meeting basic functional requirements, and is convenient to manufacture, assemble and maintain in the later period.
Furthermore, a first seal 35 (as shown in fig. 4) may also be fixed to the bottom wall of the air make-up valve body 33, by its own elastic deformation characteristics, to achieve a reliable seal against the circumferential through hole 132. Of course, as a further optimization, an inclined downward extending ear-shaped first sealing protrusion 351 (as shown in fig. 4) may be provided around both the inner and outer edges of the first sealing member 35, so that the area of the actual sealing area is effectively reduced, the sealing function is facilitated, and the reliability of the sealing is improved.
Here, a molding method of the first seal 35 is recommended, specifically as follows: the air compensating valve body 33 is formed by injection molding, and a riveting hole for fixing the first sealing member 35 is reserved or formed in the air compensating valve body 33, and after the air compensating valve body 33 is formed, the air compensating valve body is placed into an injection mold again, and the first sealing member 35 and the riveting part on the first sealing member are formed by injection molding.
Furthermore, in order to improve the sealing reliability between the air compensating valve assembly 3 and the first chamber 11, a first sealing rubber ring 36 may be further disposed around the periphery of the air compensating valve seat 33 (as shown in fig. 3).
Of course, the above-mentioned air release valve assembly 4 can be also set with reference to the following schemes: the air release valve assembly includes a second resilient member 42, an air release valve body 43 (shown in fig. 10), and an air release valve seat 44. The second elastic member 42 abuts against between the air release valve seat 44 and the air release valve body 43, so that the air release valve body 43 is elastically pressed against the lower surface of the partition 13 all the time to block the ventilation path through the central through hole 131. The air release cavity 41 is opened in the air release valve 43 (as shown in fig. 4).
As a further optimization, the above-mentioned air release valve assembly 4 may be additionally provided with a second sealing member 45, which is fixed to the top wall of the air release valve body 43 (as shown in fig. 4).
As a further refinement, an obliquely upwardly extending ear-like second sealing projection 451 is provided around both the inner and outer edges of the second seal 45 (as shown in fig. 4).
As a further optimization, the air release valve seat 44 is detachably sleeved and fixed in the second cavity 12, and a second sealing rubber ring 46 is sleeved around the periphery of the air release valve seat 44 (as shown in fig. 3).
In addition, in order to increase the exhaust speed and realize rapid pressure relief, the size of the central through hole 131 needs to be controlled. Through long-term test data verification, when the diameter of the central through hole 131 is controlled to be 4-5mm, a good effect can be obtained.
Finally, the first elastic member 32 and the second elastic member 42 may be a cylindrical spring, an elastic rubber sleeve, or the like according to practical situations.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. The integrated oil tank isolation valve is characterized by comprising a shell, an electromagnetic valve assembly, an air compensating valve assembly, an air releasing valve assembly and a sealing terminal; a first cavity and a second cavity are arranged in the shell; the first cavity is arranged right above the second cavity and is partitioned by a partition plate; a first channel extends leftwards along the first cavity to realize communication with the inner cavity of the oil tank; a second channel extends rightward along the second cavity to realize communication with the inner cavity of the carbon tank; a central through hole and a circumferential through hole arranged at the periphery of the central through hole are formed in the partition plate; the air compensating valve assembly is arranged in the first cavity, and an air compensating cavity which is always communicated with the first channel is arranged in the air compensating valve assembly; the air compensating valve assembly is elastically pressed against the upper surface of the partition plate to block an air ventilation path flowing through the circumferential through hole; the air release valve assembly is arranged in the second cavity, is always elastically propped against the lower surface of the partition plate, and is internally provided with an air release cavity which is always communicated with the second channel; the sealing terminal is arranged in the air supplementing cavity, can penetrate through the central through hole and moves along the axial direction of the sealing terminal under the drive of the electromagnetic valve component so as to control the switching of the blocking/communicating state of the air supplementing cavity and the air discharging cavity;
the air compensating valve assembly comprises a first elastic piece, an air compensating valve body and an air compensating valve seat; the first elastic piece is propped against between the air supplementing valve seat and the air supplementing valve body, so that the air supplementing valve body is always elastically pressed against the upper surface of the partition plate to block an air ventilation path flowing through the circumferential through hole; the air supplementing cavity is arranged in the air supplementing valve body; the air supplementing valve seat is detachably sleeved and fixed in the first cavity, and a first sealing rubber ring is sleeved around the periphery of the air supplementing valve seat;
the air compensating valve assembly also comprises a first sealing piece which is fixed on the bottom wall of the air compensating valve body; an obliquely downward extending ear-shaped first sealing protrusion is arranged around the inner edge and the outer edge of the first sealing piece;
the air release valve assembly comprises a second elastic piece, an air release valve body and an air release valve seat; the second elastic piece is propped against between the air release valve seat and the air release valve body, so that the air release valve body is always elastically pressed against the lower surface of the partition plate to block an air release path flowing through the central through hole; the air release cavity is arranged in the air release valve body.
2. The integrated tank isolation valve of claim 1, wherein the bleed valve assembly further comprises a second seal secured to a top wall of the bleed valve body.
3. The integrated tank isolation valve of claim 2, wherein an obliquely-extending ear-like second sealing protrusion is provided around both the inner and outer edges of the second seal.
4. The integrated tank isolation valve of claim 1, wherein the vent valve seat is removably nested, secured within the second cavity, and a second sealing rubber ring is nested around the periphery of the vent valve seat.
5. The integrated tank isolation valve of any of claims 1-4, wherein the diameter of the central through bore is controlled to be 4-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910978200.7A CN110594459B (en) | 2019-10-15 | 2019-10-15 | Integrated oil tank isolation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910978200.7A CN110594459B (en) | 2019-10-15 | 2019-10-15 | Integrated oil tank isolation valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110594459A CN110594459A (en) | 2019-12-20 |
| CN110594459B true CN110594459B (en) | 2024-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910978200.7A Active CN110594459B (en) | 2019-10-15 | 2019-10-15 | Integrated oil tank isolation valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN110594459B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102764077B1 (en) * | 2020-08-04 | 2025-02-05 | 현대자동차주식회사 | Fuel tank isolation solenoid valve for vehicle |
| CN114074544B (en) * | 2020-08-12 | 2025-09-02 | 上海大创汽车技术有限公司 | Fuel tank isolation valve, fuel tank system and vehicle |
| CN112269369A (en) * | 2020-10-21 | 2021-01-26 | 亚普汽车部件股份有限公司 | Linear control electric control valve and electric control fuel system |
| CN113685290B (en) * | 2021-08-03 | 2023-09-12 | 东风富士汤姆森调温器有限公司 | Fuel evaporation control system based on pilot type oil tank isolation valve |
| CN115929925B (en) * | 2023-02-08 | 2023-06-09 | 保定平恩康汽车技术有限公司 | Fuel oil isolation valve of hybrid fuel tank |
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| CN118757604B (en) * | 2024-09-05 | 2024-11-12 | 保定平恩康汽车技术有限公司 | An open fuel tank isolation valve |
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| CN202215405U (en) * | 2011-07-14 | 2012-05-09 | 宁波方圆汽摩发展有限公司 | Rollover safety valve |
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| CN110594459A (en) | 2019-12-20 |
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