CN205940902U - On -vehicle fuel oil system reveals detection module - Google Patents
On -vehicle fuel oil system reveals detection module Download PDFInfo
- Publication number
- CN205940902U CN205940902U CN201620466186.4U CN201620466186U CN205940902U CN 205940902 U CN205940902 U CN 205940902U CN 201620466186 U CN201620466186 U CN 201620466186U CN 205940902 U CN205940902 U CN 205940902U
- Authority
- CN
- China
- Prior art keywords
- detection module
- leak detection
- vacuum valve
- fast
- accommodating cavity
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model provides an on -vehicle fuel oil system reveals detection module originally reveals detection module's one end and installs on automobile -used charcoal jar, and empty straining is connected to the other end, originally, reveal detection module include the casing, connect the fast socket lid in this casing and be located this casing and fast socket lid between diaphragm, pressure valve and vacuum valve, wherein, the casing is equipped with strains the interface with the empty sky of being connected of straining, and fast socket lid is equipped with the charcoal jar interface of being connected with automobile -used charcoal jar, diaphragm, pressure valve and vacuum valve are all fixed and are covered at fast socket. The utility model discloses on -vehicle fuel oil system reveals detection module through the hot expansion and contraction performance of fuel and fuel steam, arouses that fuel oil system internal pressure increases and reduces to basic condition, this on -vehicle fuel oil system reveals detection module has replaced current solenoid valve of original use and pressure sensor, simple structure, low price, safe and reliable.
Description
Technical field
The utility model belongs to automotive field, more particularly, to a kind of vehicle-mounted fuel systems leak detection module.
Background technology
China's environmental pollution is serious at present, and country is increasingly stricter to vehicle exhaust and discharge vaporization requirement, with
Capital six and state six Abgasgesetz will appearance successively, vehicle needs to increase vehicle-mounted leak diagnostic systems.Fuel System
System is also badly in need of designing a kind of module detecting whether fuel system has leak point, with reduce automobile oil gas reveal thus
Pollution to environment.
Utility model content
The purpose of this utility model be to provide one kind to instead of originally use existing magnetic valve and pressure sensor,
Structure is simple, low price, safe and reliable vehicle-mounted fuel systems leak detection module.
The utility model provides a kind of vehicle-mounted fuel systems leak detection module, one end peace of this leak detection module
It is contained in automobile-used canister, the other end connects air filter；This leak detection module includes housing, is connected in this housing
Fast receptacle cover and be located at diaphragm between this housing and fast receptacle cover, pressure valve and vacuum valve；Its
In, described housing is provided with the air filter interface being connected with air filter, and fast socket is covered with the tank connected canister with automobile-used charcoal
Interface；Described diaphragm, pressure valve and vacuum valve are each attached on fast receptacle cover.
Wherein, described fast socket is covered with gripper shoe, and described canister interface is located at the side of this gripper shoe, described
Diaphragm, pressure valve and vacuum valve are located at the opposite side of this gripper shoe.
Wherein, described fast receptacle cover is additionally provided with the pressure valve accommodating cavity of housing said pressure valve and houses described vacuum
The vacuum valve accommodating cavity of valve, this pressure valve accommodating cavity and vacuum valve accommodating cavity are oppositely arranged, and this pressure valve houses
Chamber and vacuum valve accommodating cavity are all disposed adjacent with described gripper shoe.
Wherein, described fast receptacle cover is additionally provided with the diaphragm fixed seat of fixing described diaphragm, this diaphragm fixed seat all with
Described pressure valve accommodating cavity and vacuum valve accommodating cavity are disposed adjacent.
Wherein, described housing is additionally provided with electric signal output port.
The utility model vehicle-mounted fuel systems leak detection module, by thermal expansion and the receipts of fuel oil and fuel-steam
Contracting performance, causes fuel system internal pressure to increase and be reduced to primary condition；With fuel system internal pressure
Change, forms certain pressure differential with external environment condition：When environment temperature reduces opposite outer internal in fuel system
Environment forms certain negative pressure, and negative pressure differential forms active force on rubber diaphragm, promotes rubber diaphragm to close, from
And inspire metal switch output electric signal；When the environment temperature decreases, this vehicle-mounted fuel systems leak detection module
Three kinds of states are had to occur；This vehicle-mounted fuel systems leak detection module instead of and originally uses existing magnetic valve and pressure
Force snesor, structure is simple, and low price is safe and reliable.
Brief description
Fig. 1 is the structural decomposition diagram of the utility model vehicle-mounted fuel systems leak detection module；
Fig. 2 is the internal structure schematic diagram of vehicle-mounted fuel systems leak detection module shown in Fig. 1；
Fig. 3 is the structural representation of vehicle-mounted fuel systems leak detection module shown in Fig. 1；
Fig. 4 is another structural representation of vehicle-mounted fuel systems leak detection module shown in Fig. 1.
Specific embodiment
Fig. 1 to Fig. 4 show the utility model provides a kind of structure of vehicle-mounted fuel systems leak detection module to show
It is intended to, this leak detection module 100 one end is arranged in canister, the other end connects air filter.
This leak detection module 100 includes：Housing 10, the fast receptacle cover 60 being connected in this housing 10, with
And be located at rubber diaphragm 20 between this housing 10 and fast receptacle cover 60, pressure valve 30, vacuum valve 40, with
And multiple stitch 50.Wherein, housing 10 is provided with air filter interface 11 and the electric signal output port 12 of lengthwise,
Air filter interface 11 connects this leak detection module 100 and air filter, and described stitch 50 is located at this electric signal input end
In mouth 12；Fast receptacle cover 60 is provided with prominent canister interface 51, and this canister interface 61 connects this leak detection
Module 100 and canister.
It is solid that fast socket is covered with gripper shoe 62, pressure valve accommodating cavity 63, vacuum valve accommodating cavity 64 and diaphragm
Reservation 65.Wherein, pressure valve 30 houses and is fixed in pressure valve accommodating cavity 63, and this pressure valve 30 connects sky
Filter interface 11 to one end of canister interface 61；Vacuum valve 40 also houses and is fixed in vacuum valve accommodating cavity 64,
Vacuum valve 40 connects air filter interface 11 to the other end of canister interface 61；Rubber diaphragm 20 is fixed on this diaphragm
In fixed seat 65；Canister interface 61 be located at this gripper shoe 62 side, rubber diaphragm 20, pressure valve 30,
And vacuum valve 40 is located at the opposite side of this gripper shoe 62.
Pressure valve accommodating cavity 63 and vacuum valve accommodating cavity 64 are in being oppositely arranged of being arranged above and below；This pressure valve houses
Chamber 63 and vacuum valve accommodating cavity 64 are all disposed adjacent with described gripper shoe 62, and this diaphragm fixed seat 65 is all and institute
State pressure valve accommodating cavity 63 and vacuum valve accommodating cavity 64 is disposed adjacent.
Rubber diaphragm 20 is located at air filter interface 11 side, and this rubber diaphragm 20 connects housing 10 and fast receptacle cover
60.
The detection method of this vehicle-mounted fuel systems leak detection module, comprises the steps：
Set the pressure of canister interface 51 as P1, the pressure of air filter interface 11 is P2, this vehicle-mounted fuel systems
The detection method of leak detection module, comprises the steps：
When P1-P2 ＞ presets first pressure value, rubber diaphragm 20 is in open mode, this leak detection mould
Block 100 no electric signal output, pressure valve 30 is opened, and is exhausted, that is,：Gas connects to canister through canister
Mouth 61 to pressure valve 30, is vented by air filter interface 11.
This default first pressure value is+0.124kpa.
When default second pressure value ＜ P1-P2 ＜ presets first pressure value, rubber diaphragm 20 is in open shape
State, no electric signal output, pressure valve 30 and vacuum valve 40 are in closed mode.
This default second pressure value is -0.172kpa.
When default 3rd pressure value ＜ P1-P2 ＜ presets second pressure value, pressure valve 30 and vacuum valve 40
It is in closed mode, now leak detection is carried out to fuel system.
This default 3rd pressure value is -0.496kpa.
The leak detection of fuel system has three kinds of states, the first state：No electric signal output.When temperature fall
When the low detection module to car load demarcation should provide the temperature of electric signal, detection module does not also export telecommunications
Number, vehicle-mounted computer judges that fuel system has the equivalent source of leaks being more than 0.02 inch, and vehicle-mounted computer starts OBD
Report to the police.
Second state：There is electric signal output, electric signal output time T1 is more than the time T that car load is demarcated.
Vehicle-mounted computer judges that fuel system has the equivalent source of leaks being more than 0.02 inch, and vehicle-mounted computer starts OBD and reports to the police.
The third state：There is electric signal output, electric signal output time T1 is less than the time T that car load is demarcated.
Vehicle-mounted computer judges fuel system sealing, and vehicle can normally use.
Judge that whole fuel system has or not by above these three state vehicle-mounted computers and equivalent be more than 0.02 inch
Source of leaks.
The detection method of this vehicle-mounted fuel systems leak detection module, also comprises the steps：
Set fuel system internal pressure as P3, environmental pressure is P4.
When P3-P4 ＜ presets three pressure value, first, pressure valve 30 and vacuum valve 40 are in closing shape
State；Then, rubber diaphragm 20 is closed, electric signal output；Then, vacuum valve 40 is opened, right
Fuel system tonifying Qi, that is,：Air enters canister interface 61 from air filter interface 11 through vacuum valve 40, enters back into
Canister.
The utility model vehicle-mounted fuel systems leak detection module, by thermal expansion and the receipts of fuel oil and fuel-steam
Contracting performance, causes fuel system internal pressure to increase and be reduced to primary condition；With fuel system internal pressure
Change, forms certain pressure differential with external environment condition：When environment temperature reduces opposite outer internal in fuel system
Environment forms certain negative pressure, and negative pressure differential forms active force on rubber diaphragm, promotes rubber diaphragm to close, from
And inspire metal switch output electric signal；When the environment temperature decreases, this vehicle-mounted fuel systems leak detection module
Three kinds of states are had to occur；This vehicle-mounted fuel systems leak detection module instead of and originally uses existing magnetic valve and pressure
Force snesor, structure is simple, and low price is safe and reliable.
Above specific embodiment of the utility model is described in detail, but content has been only the utility model wound
The exemplary embodiments made are it is impossible to be considered the practical range for limiting the utility model creation.Fan Yiben is practical
The impartial change that new creation application range is made and improvement etc., all should still belong to patent of the present utility model and contain
Within the scope of lid.
Claims (5)
1. a kind of vehicle-mounted fuel systems leak detection module is it is characterised in that one end of this leak detection module
It is arranged in automobile-used canister, the other end connects air filter；This leak detection module includes housing, is connected to this housing
Interior fast receptacle cover and be located at diaphragm between this housing and fast receptacle cover, pressure valve and vacuum valve；
Wherein, described housing is provided with the air filter interface being connected with air filter, and fast socket is covered with the tank connected charcoal with automobile-used charcoal
Tank interface；Described diaphragm, pressure valve and vacuum valve are each attached on fast receptacle cover.
2. leak detection module according to claim 1 it is characterised in that：Described fast socket is covered with
Gripper shoe, described canister interface is located at the side of this gripper shoe, described diaphragm, pressure valve and vacuum valve position
Opposite side in this gripper shoe.
3. leak detection module according to claim 2 it is characterised in that：Described fast receptacle cover also sets
There are the pressure valve accommodating cavity of housing said pressure valve and the vacuum valve accommodating cavity housing described vacuum valve, this pressure valve
Accommodating cavity and vacuum valve accommodating cavity are oppositely arranged, and this pressure valve accommodating cavity and vacuum valve accommodating cavity all with described
Fagging is disposed adjacent.
4. leak detection module according to claim 3 it is characterised in that：Described fast receptacle cover also sets
There is the diaphragm fixed seat of fixing described diaphragm, this diaphragm fixed seat is all held with described pressure valve accommodating cavity and vacuum valve
Put chamber to be disposed adjacent.
5. leak detection module according to claim 1 it is characterised in that：Described housing is additionally provided with electricity
Signal output port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620466186.4U CN205940902U (en) | 2016-05-20 | 2016-05-20 | On -vehicle fuel oil system reveals detection module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620466186.4U CN205940902U (en) | 2016-05-20 | 2016-05-20 | On -vehicle fuel oil system reveals detection module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205940902U true CN205940902U (en) | 2017-02-08 |
Family
ID=57934212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620466186.4U Withdrawn - After Issue CN205940902U (en) | 2016-05-20 | 2016-05-20 | On -vehicle fuel oil system reveals detection module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205940902U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806571A (en) * | 2016-05-20 | 2016-07-27 | 斯丹德汽车系统（苏州）有限公司 | Car-mounted fuel system leakage detecting module and detecting method thereof |
-
2016
- 2016-05-20 CN CN201620466186.4U patent/CN205940902U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806571A (en) * | 2016-05-20 | 2016-07-27 | 斯丹德汽车系统（苏州）有限公司 | Car-mounted fuel system leakage detecting module and detecting method thereof |
| CN105806571B (en) * | 2016-05-20 | 2019-03-08 | 斯丹德汽车系统（苏州）有限公司 | Vehicle-mounted fuel systems leak detection module and its detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170208 Effective date of abandoning: 20190308 |
|
| AV01 | Patent right actively abandoned |