CN213007611U - Oil tank isolation structure, oil tank assembly, fuel supply system and vehicle - Google Patents
Oil tank isolation structure, oil tank assembly, fuel supply system and vehicle Download PDFInfo
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- CN213007611U CN213007611U CN202021775649.8U CN202021775649U CN213007611U CN 213007611 U CN213007611 U CN 213007611U CN 202021775649 U CN202021775649 U CN 202021775649U CN 213007611 U CN213007611 U CN 213007611U
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Abstract
The utility model relates to a vehicle fuel supplies with technical field, discloses an oil tank isolation structure, oil tank assembly, fuel feeding system and vehicle. The oil tank isolation structure comprises a first connecting end communicated with an oil tank, a second connecting end communicated with a carbon tank, a solenoid valve and a pressure valve, wherein the solenoid valve and the pressure valve are connected between the first connecting end and the second connecting end in parallel, the pressure valve can be opened when the internal pressure of the oil tank reaches an opening pressure set value, and the pressure valve is further arranged to be opened under external control. This oil tank isolation structure can play the separation effect between oil tank and carbon tank when, can't open or need artificial pressure release to refuel when the solenoid valve, the pressure valve can be opened in order to realize the oil tank pressure release under external control to the assurance can normally refuel.
Description
Technical Field
The utility model relates to a vehicle fuel supplies with technical field, specifically relates to an oil tank isolation structure, an oil tank assembly, a fuel feeding system and a vehicle.
Background
Currently, in a fuel supply system of a vehicle, a tank isolation valve is provided between a tank and a canister. Normally, the tank isolation valve remains normally closed, with oil vapor locked in the tank; when the automobile enters the oiling working condition, the vehicle controller controls the oil tank isolating valve to open and release pressure, oil vapor enters the carbon tank to be adsorbed, and the oil filler cap of the oil tank is opened when the pressure of the oil tank is lower than a set threshold value to allow oiling. Thus, the tank isolation valve mainly plays a role in blocking between the carbon tank and the oil tank, and therefore the tank isolation valve needs to have a large pressure-bearing structure and simultaneously has the function of opening and closing at any time.
The existing oil tank isolation valve comprises a valve body, and a pressure valve core and an electromagnetic valve core which are arranged in the valve body, wherein when the pressure in the oil tank reaches an opening set value of the pressure valve, the pressure valve core is opened to release pressure. When the pressure in the oil tank does not reach the opening set value of the pressure valve core, the controller of the vehicle can control the electromagnetic valve core to open and release the pressure according to the working condition so as to allow oil filling.
However, the existing oil tank isolation valve has large volume, complex structure and overhigh price. In addition, in actual use, when the electromagnetic valve core fails and cannot be opened, the oil tank cannot be decompressed, and oil cannot be filled. For this reason, it is now common practice to replace the tank isolation valve, which, as mentioned above, would increase the maintenance costs correspondingly due to the high price of the tank isolation valve.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a cost is lower and can't open or need can also open the pressure release in order to guarantee that the oil tank can normally refuel oil tank isolation structure when the pressure release refuels at the solenoid valve.
In order to achieve the above object, the utility model provides an oil tank isolation structure, this oil tank isolation structure including be used for with the first link of oil tank intercommunication with be used for with the second link of carbon tank intercommunication, and parallel connection be in first link with solenoid valve and pressure valve between the second link, wherein, the pressure valve can be opened when the oil tank internal pressure that bears reaches the opening pressure set value, and the pressure valve still sets up to open under external control.
In the technical scheme, the electromagnetic valve and the pressure valve are connected in parallel between the first connecting end and the second connecting end, meanwhile, the pressure valve can be opened when the internal pressure of the oil tank born reaches the set opening pressure value, and the pressure valve is also set to be opened under external control. Thus, the control unit of the vehicle can control the electromagnetic valve to open for refueling and close the electromagnetic valve after refueling is finished, and when the pressure in the oil tank rises to reach the opening pressure set value of the pressure valve, the pressure valve is opened for pressure relief. In addition, when the electromagnetic valve fails to open or cannot open under the working condition of no electricity or needs artificial pressure relief, the pressure valve is opened under external control so as to meet the refueling requirement of the vehicle. Therefore, this oil tank isolation structure can play the separation effect between oil tank and carbon tank, when the solenoid valve can't open or need artificial pressure release to refuel, the pressure valve can open in order to realize the oil tank pressure release under external control to guarantee can normally refuel. In addition, because solenoid valve and pressure valve are mutually independent valve, consequently, for the oil tank isolation valve that forms by solenoid valve core and the pressure valve core that sets up in single valve casing among the prior art, owing to avoided the inner structure design of single valve casing, consequently, this oil tank isolation structure volume is less, simple structure, and the cost is lower.
Furthermore, the pressure valve can be automatically opened under the action of pressure difference when the internal pressure of the oil tank reaches an opening pressure set value, and meanwhile, the pressure valve comprises a driving piece which can drive a valve core of the pressure valve to act so as to open the pressure valve.
Further, the oil tank isolation structure comprises at least one of the following modes: the first method is as follows: the driving piece is connected with the valve core and can act under the action of external force to drive the valve core to act; the second method comprises the following steps: the driving piece comprises an electromagnetic driving unit, the electromagnetic driving unit can drive the valve core to act to open the pressure valve when being electrified, and the valve core can return when the electromagnetic driving unit is not electrified.
Still further, the drive member includes a pull cord that can be manually pulled.
Further, the oil tank isolation structure includes any one of the following cases: the first situation is as follows: the oil tank isolation structure is integrated into an oil tank isolation module; case two: the pressure valve is a one-way valve, and an inlet of the one-way valve is used for communicating an oil tank; case three: the pressure valve is a check valve group comprising at least two check valves which are connected in parallel and face opposite directions; case four: the oil tank isolation structure is integrated into an oil tank isolation module, the pressure valve is a one-way valve, and an inlet of the one-way valve is used for communicating an oil tank; case five: the oil tank isolation structure is integrated into an oil tank isolation module, and the pressure valve is a check valve group comprising at least two check valves which are connected in parallel and have opposite directions.
Additionally, the utility model provides an oil tank assembly, this oil tank assembly include oil tank, carbon tank and oil tank isolation valve, wherein, the oil tank isolation valve includes solenoid valve and pressure valve, the solenoid valve with pressure valve parallel connection be in the oil tank with between the carbon tank, the pressure valve can be opened when the oil tank internal pressure who bears reaches the opening pressure setting value, and the pressure valve still sets up to open under external control.
In the technical scheme, the electromagnetic valve and the pressure valve are connected between the oil tank and the carbon tank in parallel, the pressure valve can be opened when the borne internal pressure of the oil tank reaches the opening pressure set value, and the pressure valve is also set to be opened under external control. Thus, the control unit of the vehicle can control the electromagnetic valve to open for refueling and close the electromagnetic valve after refueling is finished, and when the pressure in the oil tank rises to reach the opening pressure set value of the pressure valve, the pressure valve is opened for pressure relief. In addition, when the electromagnetic valve fails to open or cannot open under the working condition of no electricity or needs artificial pressure relief, the pressure valve is opened under external control so as to meet the refueling requirement of the vehicle.
Further, the oil tank isolation valve is the oil tank isolation structure described above, wherein the first connection end is communicated with the oil tank, and the second connection end is communicated with the carbon canister.
In addition, the utility model provides a fuel supply system, this fuel supply system includes filler cap assembly, oil filler pipe assembly, filler cap opening button, the control unit and above arbitrary oil tank assembly, wherein, the oil filler pipe assembly with the oil tank is connected; the oil filler cap assembly, the oil filler cap opening button and the electromagnetic valve are respectively connected with the control unit.
Further, the fuel supply system further comprises a pressure sensor for detecting the pressure inside the fuel tank, and the pressure sensor is connected with the control unit.
Finally, the utility model provides a vehicle, the vehicle is provided with above arbitrary fuel feed system.
Drawings
Fig. 1 is a schematic structural view of an oil tank isolation structure connected between an oil tank and a carbon canister according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a pressure valve in an oil tank isolation structure according to an embodiment of the present invention;
FIG. 3 is a schematic view of another structure of a pressure valve in an oil tank isolation structure according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a pressure valve in an oil tank isolation structure according to an embodiment of the present invention.
Description of the reference numerals
The system comprises a solenoid valve 1, a pressure valve 2, a valve core 3, a pull rope 4, an oil tank 5, a carbon tank 6, a check valve bank 7, a check valve 8 and an air hole 9.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
Referring to fig. 1, the utility model provides an oil tank isolation structure includes the second link that is used for the first link that communicates with the oil tank and is used for communicating with the carbon tank to and parallel connection is solenoid valve 1 and pressure valve 2 between first link and second link, and wherein, pressure valve 2 can open when the oil tank internal pressure that bears reaches the opening pressure setting value, and pressure valve 2 still sets up to open under external control.
In the oil tank isolation structure, because the electromagnetic valve 1 and the pressure valve 2 are connected in parallel between the first connecting end and the second connecting end, and meanwhile, the pressure valve 2 can be opened when the internal pressure of the oil tank born reaches the set opening pressure value, and the pressure valve 2 is also set to be opened under external control, in the actual use of the oil tank isolation structure, the first connecting end is communicated with the oil tank, and the second connecting end is communicated with the carbon tank. Thus, the control unit of the vehicle can control the solenoid valve to open for refueling and close the solenoid valve after refueling is finished, and when the pressure in the oil tank rises to reach the opening pressure set value of the pressure valve 2, the pressure valve 2 is opened for pressure relief. In addition, when the electromagnetic valve fails to open or cannot open under the working condition of no electricity or needs artificial pressure relief, the pressure valve 2 is controlled to open under external control so as to meet the refueling requirement of the vehicle. Consequently, this oil tank isolation structure can play the separation effect between oil tank and carbon tank, when solenoid valve 1 can't open or need artificial pressure release to refuel, pressure valve 2 can open under external control in order to realize the oil tank pressure release to guarantee to normally refuel.
In addition, because the solenoid valve 1 and the pressure valve 2 are mutually independent valves, compared with the oil tank isolation valve formed by the solenoid valve core and the pressure valve core which are arranged in a single valve shell in the prior art, the oil tank isolation structure has the advantages of small volume, simple structure and low cost because the internal structure design of the single valve shell is avoided.
In addition, the set value of the opening pressure of the pressure valve 2 can be set according to actual requirements, for example, the set value of the opening pressure can be 30kpa and-10 kpa, that is, when the pressure value of the oil tank is more than or equal to 30kpa or less than or equal to-10 kpa, the pressure valve is opened; when the pressure value of the oil tank is in the range of less than 30kpa and > -10kpa, the pressure valve is normally closed. In addition, the set value of the opening pressure can be 15kpa, namely, when the pressure value of the oil tank is more than or equal to 15kpa, the pressure valve is opened; when the pressure value of the oil tank is less than 15kpa, the pressure valve is normally closed.
In this tank isolation structure, the pressure valve 2 may have various types, but it is to be noted and understood that the pressure valve 2, regardless of the type, may be opened only when the internal pressure of the tank to be subjected reaches the opening pressure set value and also be set to be opened under external control.
For example, in one type of the pressure valve 2, the pressure valve 2 may be a pressure solenoid valve, and in practical use, the pressure solenoid valve may be connected to a control unit of the vehicle, so that when a pressure sensor detecting the internal pressure of the tank detects that the pressure in the tank reaches an opening pressure set value of the pressure valve, the control unit may control the pressure solenoid valve to open. In addition, when the pressure solenoid valve needs to be opened under external control, the control unit can also control the pressure solenoid valve to be electrified, and the pressure solenoid valve can be opened after being electrified, so that when the solenoid valve fails to be opened or the solenoid valve cannot be opened under the electroless working condition or artificial pressure relief is needed, the pressure solenoid valve is opened under external control to meet the refueling requirement of the vehicle.
Alternatively, in another type of the pressure valve 2, the pressure valve 2 can be opened automatically under the action of a pressure difference when the internal pressure of the oil tank reaches an opening pressure set value, and meanwhile, the pressure valve 2 includes a driving member which can drive the valve core 3 of the pressure valve to move so as to open the pressure valve. Like this, pressure valve 2 can open automatically when the pressure differential at both ends reaches the opening pressure setting value to can in time release pressure steadily, simultaneously, the driving piece then can drive the 3 actions of case with opening pressure valve of pressure valve when needing opening pressure valve 2, like this, when the solenoid valve breaks down and can't open, or the solenoid valve can't open under the electroless operating mode, or when needing artificial pressure release, the driving piece can drive case 3 and open with external control down, in order to satisfy the refueling demand of vehicle.
In addition, the oil tank isolation structure comprises at least one of the following modes: the first method is as follows: the driving part is connected with the valve core, and the driving part can act under the action of external force to drive the valve core to act, so that the driving part can act on the valve core with the action force to drive the valve core to act. Of course, the drive member may have a configuration, such as one in which the drive member includes a motor that is rotated to rotate or displace the valve cartridge. Alternatively, the drive member may be of another construction as described below; the second method comprises the following steps: the driving piece comprises an electromagnetic driving unit, the electromagnetic driving unit can drive the valve core to move to open the pressure valve 2 when being electrified, and the valve core can return when the electromagnetic driving unit is not electrified, so that the electromagnetic driving unit and the valve core can be not directly connected, and the valve core can be attracted to move under the action of electromagnetic force when the electromagnetic driving unit is electrified to open the pressure valve 2.
In an optional mode of oil tank isolation structure, the driving piece is connected with the case, the driving piece can move in order to drive the case action under the exogenic action, and simultaneously, the driving piece includes the electromagnetic drive unit, the case action can be ordered about in order to open pressure valve 2 when the electromagnetic drive unit is electrified, the case can the return when the electromagnetic drive unit loses the electricity, that is, case and driving piece lug connection, the driving piece can directly drive the case action, and simultaneously, the electromagnetic drive unit can drive the case action through the electromagnetic force, and thus, when the electromagnetic drive unit breaks down or can't get the electricity, can directly drive the case action through the driving piece.
In addition, as mentioned above, in another form of construction of the drive member, the drive member includes a manually-drawable pull cord 4. As shown in fig. 2 and 3, the pull cord 4 can be pulled manually, and the pull cord can drive the valve core to open the pressure valve 2.
In addition, the oil tank isolation structure includes any one of the following cases: the first situation is as follows: the oil tank isolation structure is integrated into an oil tank isolation module, wherein the electromagnetic valve 1 and the pressure valve 2 can be detached, so that the integration of a product and the convenience of connection with surrounding pipelines are improved because the oil tank isolation module is integrated into a module structure, and in addition, when the electromagnetic valve 1 or the pressure valve 2 breaks down and needs to be replaced, the electromagnetic valve can be detached from the mailbox isolation module for replacement, so that the replacement of the whole mailbox isolation module is avoided, and the maintenance cost is effectively reduced; case two: the pressure valve is a one-way valve and the inlet of the one-way valve is used for communicating with the oil tank, for example, in the embodiment shown in fig. 2 and 3, the one-way valve is automatically opened when the internal pressure of the oil tank reaches the set opening pressure, and meanwhile, the driving piece can be manually pulled to open the one-way valve; case three: as shown in fig. 4, the pressure valve is a check valve group 7 comprising at least two parallel check valves 8 facing opposite directions; in this way, the corresponding check valve will automatically open when the pressure on either side of the set of check valves 7, for example the internal tank pressure, reaches the cracking pressure set point. Of course, the non-return valve group 7 can be integrated into a valve that can be opened in both directions. In addition, a drive member such as a pull cord 4 may be connected to each one-way valve 8. Case four: the oil tank isolation structure is integrated into an oil tank isolation module, the pressure valve is a one-way valve, and an inlet of the one-way valve is used for communicating the oil tank; case five: the oil tank isolation structure is integrated into an oil tank isolation module, and the pressure valve is a check valve group 7 comprising at least two check valves 8 which are connected in parallel and have opposite directions.
Additionally, the utility model provides an oil tank assembly, this oil tank assembly include oil tank 5, carbon tank 6 and oil tank isolation valve, and wherein, oil tank isolation valve includes solenoid valve 1 and pressure valve 2, and solenoid valve 1 and pressure valve 2 parallel connection are between oil tank 5 and carbon tank 6, and pressure valve 2 can open when the oil tank internal pressure that bears reaches the opening pressure setting value to pressure valve 2 still sets up to open under external control.
In this tank assembly, since the solenoid valve 1 and the pressure valve 2 are connected in parallel between the tank 5 and the canister 6, the pressure valve 2 can be opened when the internal pressure of the tank received reaches the opening pressure set value, and the pressure valve 2 is also set to be opened under external control. Thus, the control unit of the vehicle can control the electromagnetic valve to open for refueling and close the electromagnetic valve after refueling is finished, and when the pressure in the oil tank rises to reach the opening pressure set value of the pressure valve, the pressure valve is opened for pressure relief. In addition, when the electromagnetic valve fails to open or cannot open under the working condition of no electricity or needs artificial pressure relief, the pressure valve is opened under external control so as to meet the refueling requirement of the vehicle.
Of course, the tank isolation valve may have a variety of types of construction, but whatever type of construction is used, it suffices that the pressure valve 2 also be arranged to be openable under external control. For example, the pressure valve 2 is not connected to the solenoid valve 1.
Alternatively, in an alternative embodiment, the tank isolation valve is of any of the tank isolation constructions described above, wherein the first connection end communicates with the tank 5 and the second connection end communicates with the canister 6.
In addition, the utility model provides a fuel supply system, this fuel supply system includes filler cap assembly, oil filler pipe assembly, filler cap opening button, the control unit and the above arbitrary oil tank assembly, wherein, oil filler pipe assembly and oil tank 5 are connected; the oil filler cap assembly, the oil filler cap opening button and the electromagnetic valve 1 are respectively connected with the control unit.
Thus, when the oil filler cover opening button is pressed down, the control unit controls the electromagnetic valve 1 to be opened so that the oil tank exhausts air to release high-pressure oil gas in the oil tank into the carbon tank. After a predetermined period of time (e.g., 4-10 seconds, further 5-8 seconds) of venting, the filler cap assembly may be opened so that oil may be added to the tank through the filler tube assembly. After the oil filler cap assembly is opened, the control unit can control the electromagnetic valve 1 to be closed. And when the electromagnetic valve 1 fails to open, or the electromagnetic valve 1 cannot open under the working condition of no electricity, or artificial pressure relief is needed, the pressure valve 2 is controlled to open under external control so as to meet the refueling requirement of the vehicle.
In addition, the fuel supply system further comprises a pressure sensor for detecting the pressure inside the fuel tank, and the pressure sensor is connected with the control unit. Thus, when the filler cap opening button is pressed and the pressure sensor detects that the tank pressure (positive pressure) is greater than or equal to the preset value, the control unit controls the solenoid valve 1 to open to release the pressure. When the oil filler cap opening button is pressed down and the pressure sensor detects that the oil tank pressure is less than the preset value, the control unit can directly control the electromagnetic valve 1 to open. The preset value here may be the same as the cracking pressure set value of the pressure valve, or may be smaller than the cracking pressure set value of the pressure valve.
Additionally, the utility model provides a vehicle, this vehicle be provided with above arbitrary fuel feed system. Thus, as described above, the overall quality of the vehicle is effectively improved.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.
In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (10)
1. An oil tank isolation structure is characterized by comprising a first connecting end used for being communicated with an oil tank and a second connecting end used for being communicated with a carbon tank, and a solenoid valve (1) and a pressure valve (2) which are connected between the first connecting end and the second connecting end in parallel, wherein the pressure valve (2) can be opened when the internal pressure of the oil tank which is born reaches a set opening pressure value, and the pressure valve (2) is further arranged to be opened under external control.
2. The tank insulation structure according to claim 1, characterized in that the pressure valve (2) is capable of automatically opening under the action of a pressure difference when the internal pressure of the tank reaches an opening pressure set value, and the pressure valve (2) comprises a driving member capable of driving a valve core (3) of the pressure valve to move so as to open the pressure valve.
3. A tank barrier structure according to claim 2, wherein said tank barrier structure comprises at least one of:
the first method is as follows: the driving piece is connected with the valve core and can act under the action of external force to drive the valve core to act;
the second method comprises the following steps: the driving piece comprises an electromagnetic driving unit, the electromagnetic driving unit can drive the valve core to act to open the pressure valve (2) when being electrified, and the valve core can return when the electromagnetic driving unit is not electrified.
4. A tank insulation according to claim 3, characterised in that the drive member comprises a manually-pull cord (4).
5. A tank barrier structure according to any one of claims 1 to 4, wherein the tank barrier structure comprises any one of:
the first situation is as follows: the tank isolation structure is integrated into a tank isolation module, wherein the solenoid valve (1) and the pressure valve (2) are detachable;
case two: the pressure valve is a one-way valve, and an inlet of the one-way valve is used for communicating an oil tank;
case three: the pressure valve is a check valve group (7) comprising at least two check valves (8) which are connected in parallel and face opposite directions;
case four: the oil tank isolation structure is integrated into an oil tank isolation module, the pressure valve is a one-way valve, and an inlet of the one-way valve is used for communicating an oil tank;
case five: the oil tank isolation structure is integrated into an oil tank isolation module, and the pressure valve is a check valve group (7) comprising at least two check valves (8) which are connected in parallel and are opposite in orientation.
6. A fuel tank assembly, characterized by comprising a fuel tank (5), a canister (6) and a tank isolation valve, wherein the tank isolation valve comprises a solenoid valve (1) and a pressure valve (2), the solenoid valve (1) and the pressure valve (2) are connected in parallel between the fuel tank (5) and the canister (6), the pressure valve (2) can be opened when the internal pressure of the fuel tank reaches an opening pressure set value, and the pressure valve (2) is further arranged to be opened under external control.
7. A tank assembly according to claim 6, characterised in that the tank isolation valve is a tank isolation structure according to any one of claims 1 to 5, wherein the first connection end communicates with the tank (5) and the second connection end communicates with the canister (6).
8. A fuel supply system comprising a filler cap assembly, a filler tube assembly, a filler cap opening button, a control unit and the fuel tank assembly of claim 6 or 7,
the oil filling pipe assembly is connected with the oil tank (5);
the oil filler cap assembly, the oil filler cap opening button and the electromagnetic valve (1) are respectively connected with the control unit.
9. A fuel supply system as set forth in claim 8 further comprising a pressure sensor for detecting a pressure inside the fuel tank, the pressure sensor being connected to the control unit.
10. A vehicle characterized in that the vehicle is provided with a fuel supply system according to claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021775649.8U CN213007611U (en) | 2020-08-20 | 2020-08-20 | Oil tank isolation structure, oil tank assembly, fuel supply system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021775649.8U CN213007611U (en) | 2020-08-20 | 2020-08-20 | Oil tank isolation structure, oil tank assembly, fuel supply system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213007611U true CN213007611U (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021775649.8U Active CN213007611U (en) | 2020-08-20 | 2020-08-20 | Oil tank isolation structure, oil tank assembly, fuel supply system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213007611U (en) |
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2020
- 2020-08-20 CN CN202021775649.8U patent/CN213007611U/en active Active
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