CN107725220A - A kind of canister breathing connecting line, canister respiratory system and automobile - Google Patents
A kind of canister breathing connecting line, canister respiratory system and automobile Download PDFInfo
- Publication number
- CN107725220A CN107725220A CN201711037421.1A CN201711037421A CN107725220A CN 107725220 A CN107725220 A CN 107725220A CN 201711037421 A CN201711037421 A CN 201711037421A CN 107725220 A CN107725220 A CN 107725220A
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- China
- Prior art keywords
- canister
- pipeline
- venturi tube
- pressure
- connecting line
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Classifications
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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
- F02M25/0854—Details of the absorption canister
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
Abstract
The invention provides a kind of canister to breathe connecting line, it includes triple valve, first check valve, Venturi tube and the second check valve, the entrance of triple valve is used to canister be connected by Valve EGR, and the first outlet of triple valve is used for and pipeline connection after the first pressure for being connected inlet manifold and air throttle；First check valve is arranged on after first outlet and the first pressure between pipeline so that oil gas can only from triple valve to the first pressure after pipeline one-way flow；Second check valve is arranged between the second outlet of triple valve and the suction inlet of Venturi tube so that oil gas can only be from second outlet to Venturi tube one-way flow；The inlet port of Venturi tube is used to pipeline after the pressure of inlet manifold be connected be connected booster, and the outlet of Venturi tube is for being connected pipeline connection before the pressure of booster and air cleaner.The canister breathing connecting line of the present invention, it can effectively improve the suction effect to oil gas.Present invention also offers a kind of canister respiratory system and a kind of automobile.
Description
Technical field
The present invention relates to technical field of automobile engine, and in particular to a kind of canister breathing connecting line, canister breathing system
System and automobile.
Background technology
In recent years, engine with supercharger especially small displacement engine with supercharger is increasingly popularized, and the Abgasgesetz of country
It is increasingly strict.The effect of canister respiratory system is will to be fired in the inlet manifold of the oil gas being stored in canister suction engine
Burn, avoid oil and gas leakage from entering air, to meet national legislation requirement.
As shown in figure 1, existing canister respiratory system generally includes canister breathing connecting line, fuel tank 11, canister 12, carbon
Tank magnetic valve 13, air throttle 18, engine, air cleaner 24 and booster 25, wherein canister breathing connecting line are usual
Two including triple valve 14 and triple valve 14 export the first check valve 15 and the second check valve 17 being respectively connected with, triple valve
14 entrance is connected by Valve EGR 13 with canister 12, and canister 12 connects with fuel tank 11, the first check valve 15 and solar term
Connecting line between door 18 and the inlet manifold 16 of engine is connected, the second check valve 17 and booster 19 and air-filtering
Connecting line between device 191 is connected.The operation principle of the canister respiratory system is：In small engine load, air throttle
18 when closing, and the pipeline after air throttle 18 has a vacuum, and the oil gas in canister 11 is through Valve EGR 12, triple valve 14 and first
Check valve 15 enters inlet manifold 16, then into the cylinder 192 of engine；In the big load of engine, air throttle 18 is opened,
Due to the effect of booster 25, the pipeline after booster 25 has a malleation, and the pipeline before booster 25 has negative pressure so that first
Check valve 15 is closed, and the second check valve 17 is opened, and now the oil gas in canister 12 will be through Valve EGR 13, triple valve 14
Enter with the second check valve 17 in the pipeline before booster 19, enter inlet manifold 16 after the compression of the pinch roller of booster 19.However,
Because the negative pressure maximum before the pinch roller of booster 19 can only produce 7KPa pressure difference, i.e. negative pressure caused by its energy is limited, causes it not
More oil gas can be pumped out from canister 12 so that the canister respiratory system to the suction effect of oil gas in canister 12 compared with
Difference.
The content of the invention
It is an object of the invention to provide a kind of canister to breathe connecting line, to solve canister respiratory system pair in the prior art
The problem of suction effect of oil gas is poor in canister.It is a further object of the present invention to provide a kind of canister respiratory system and a kind of vapour
Car.
To achieve the above object, the invention provides following technical scheme：
A kind of canister breathes connecting line, and it includes triple valve, the first check valve, Venturi tube and the second check valve,
The entrance of the triple valve is used to canister be connected by Valve EGR, and the first outlet of the triple valve is used for being connected
Pipeline connection after inlet manifold and the first pressure of air throttle；First check valve is arranged on the first outlet and described first
After pressure between pipeline so that pipeline one-way flow after oil gas can only press from the triple valve to described first；Described second is unidirectional
Valve is arranged between the second outlet of the triple valve and the suction inlet of the Venturi tube so that oil gas can only be by described second
Export to the Venturi tube one-way flow；The inlet port of the Venturi tube is used for being connected booster and the inlet manifold
Pressure after pipeline be connected, the outlet of the Venturi tube is used for being connected pipeline before the pressure of the booster and air cleaner
Connection.
Preferably, sensor is provided with the Venturi tube, the sensor is used to detect to be flowed into by the suction inlet
The flow of oil gas in the Venturi tube.
Preferably, the inlet port is connected with pipeline after the described first pressure.
Preferably, the inlet port is connected with being connected the booster with pipeline after the second pressure of the air throttle.
A kind of canister respiratory system, it includes canister breathing connecting line, and the canister breathing connecting line is above-mentioned
Canister breathing connecting line described in one.
A kind of automobile, it includes canister respiratory system, and the canister respiratory system is canister respiratory system described above.
The beneficial effects of the present invention are：
The canister breathing connecting line of the present invention, in the big load of engine, booster is started working for it, and one after supercharging
Portion gas will the inlet port of flow through venturi flow to the outlet of Venturi tube, and flow into before the pressure of booster in pipeline, by
In when gas flows to the outlet of Venturi tube by the inlet port of Venturi tube, using Venturi effect now in Venturi tube
Larger negative pressure will be produced at the necking being connected with suction inlet so that more oil gas are inhaled into by suction inlet, so as to have
Improve suction effect of the canister respiratory system to oil gas in canister to effect.
The canister respiratory system of the present invention includes above-mentioned canister breathing connecting line, because above-mentioned canister breathes connecting line
With above-mentioned beneficial effect, the canister respiratory system comprising above-mentioned canister breathing connecting line should also have correspondingly beneficial to effect
Fruit.
The automobile of the present invention includes above-mentioned canister respiratory system, because above-mentioned canister respiratory system has above-mentioned beneficial effect
Fruit, the automobile comprising above-mentioned canister respiratory system should also have correspondingly beneficial effect.
Brief description of the drawings
Brief description of the drawings
, below will be to institute in embodiment in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
The accompanying drawing needed to use is briefly described, and the specific embodiment of the present invention will be made further specifically with reference to accompanying drawing
It is bright, wherein
Fig. 1 is the schematic diagram of existing canister respiratory system；
Fig. 2 is the schematic diagram of canister respiratory system provided in an embodiment of the present invention.
Marked in accompanying drawing：
11st, fuel tank 12, canister 13, Valve EGR 14, triple valve
15th, the first check valve 16, inlet manifold 17, the second check valve 18, air throttle
19th, booster 191, air cleaner 192, cylinder 21, fuel tank 22, canister
23rd, Valve EGR 24, air cleaner 25, booster 26, air throttle
27th, inlet manifold 28, cylinder 31, triple valve 32, the first check valve
33rd, the second check valve 34, Venturi tube
Embodiment
In order that those skilled in the art more fully understand technical scheme, below in conjunction with specific embodiment pair
This programme is further discussed in detail.
As shown in Fig. 2 the embodiments of the invention provide a kind of canister to breathe connecting line, it includes triple valve 31, first
Check valve 32, the check valve 33 of Venturi tube 34 and second, the entrance of triple valve 31 are used to pass through Valve EGR 23 and canister
22 are connected, and the first outlet of triple valve 31 is used for and pipeline connection after the first pressure for being connected inlet manifold 27 and air throttle 26；
First check valve 32 is arranged on after first outlet and the first pressure between pipeline so that after oil gas can only be from triple valve 31 to the first pressure
Pipeline one-way flow；Second check valve 33 is arranged between the second outlet of triple valve 31 and the suction inlet of Venturi tube 34, is made
Oil gas can only be from second outlet to the one-way flow of Venturi tube 34；The inlet port of Venturi tube 34 is used for being connected booster 25
It is connected with pipeline after the pressure of inlet manifold 27, the outlet of Venturi tube 34 is used for being connected booster 25 and air cleaner 24
Pressure before pipeline connection.It is understood that the pipeline between booster 25 and air cleaner 24 is properly termed as pressing preceding pipeline；
Pipeline between booster 25 and inlet manifold 27 is properly termed as pipeline after pressure, after pressure pipeline can include after the first pressure pipeline and
Second pressure after pipeline, first pressure after pipeline of the pipeline for air throttle 26 and inlet manifold 27 between, second pressure after pipeline for be pressurized
Pipeline between device 25 and air throttle 26；Canister 22 is connected with fuel tank 21, and inlet manifold 27 is connected with the cylinder 28 of engine
It is logical；Arrow in Fig. 2 represents the flow direction of gas；Engine in Smaller load, close by air throttle 26, and booster 25 does not work, and enters
Vacuum be present in the pipeline between gas manifold 27 and air throttle 26, the oil gas in canister 22 will through Valve EGR 23, triple valve 31,
First check valve 32 enters inlet manifold 27, and flows into cylinder 28；Engine in big load, open by air throttle 26, supercharging
Device 25 works so that and there is negative pressure before pressure in pipeline, and the second check valve 33 is opened, the gas after the supercharging of booster 25
A part will the inlet port of flow through venturi 34 flow to the outlet of Venturi tube 34, and flow into pipeline before the pressure of booster 25
In, due to when gas flows to the outlet of Venturi tube 34 by the inlet port of Venturi tube 34, now being existed using Venturi effect
Larger negative pressure will be produced at the necking being connected in Venturi tube 34 with suction inlet so that more oil gas are by suction inlet quilt
Suction, then by pipeline before the outlet flow direction pressure of Venturi tube 34.
Canister provided in an embodiment of the present invention breathes connecting line, and, in the big load of engine, booster 25 starts work for it
Make, a part of gas after supercharging will the inlet port of flow through venturi 34 flow to the outlet of Venturi tube 34, and flow into supercharging
Before the pressure of device 25 in pipeline, due to when gas flows to the outlet of Venturi tube 34 by the inlet port of Venturi tube 34, utilizing text
Larger negative pressure will be produced at the necking that effect is now connected in Venturi tube 34 with suction inlet in mound so that more
Oil gas is inhaled into by suction inlet, so as to be effectively improved suction effect of the canister respiratory system to oil gas in canister.
Further, sensor can be provided with Venturi tube 34, sensor is used to detect flows into literary mound by suction inlet
In oil gas in pipe 34 flow, the oil gas flow of pipeline before pressure is flowed into during so as to detect big load.
Specifically, inlet port can be connected with pipeline after the first pressure, and now when air throttle 26 is opened, booster 25 works
Afterwards so that through booster 25 compression after gas can successively by second pressure after pipeline, first pressure after pipeline and flow to entrance
Mouthful, and enter in Venturi tube 34, then flowed out by the outlet of Venturi tube 34, so as to utilize Venturi effect, in Wen Qiu
In very big negative pressure is produced in pipe 34, and more oil gas are inhaled into by the suction inlet of Venturi tube 34.
As another embodiment provided by the invention, inlet port can press with being connected booster 25 with the second of air throttle 26
Pipeline is connected afterwards, now when air throttle 26 is opened, after booster 25 works so that gas after the compression of booster 25 is by energy
It is enough that inlet port is directly flowed to by pipeline after the second pressure, and enter in Venturi tube 34, then by the outlet stream of Venturi tube 34
Go out, so as to utilize Venturi effect, very big negative pressure is produced in Venturi tube 34, and cause more oil gas by Venturi tube 34
Suction inlet be inhaled into.Meanwhile the program can avoid engine that is, air throttle 26 is closed in Smaller load, booster 25 is not
During work, the phenomenon that oil gas is flowed to inlet port by pipeline after the first pressure occurs, therefore, mouth can be preferably entered with being managed after the second pressure
Road is connected.
The embodiment of the present invention additionally provides a kind of canister respiratory system, and it includes canister breathing connecting line, and the canister is exhaled
It is that the canister described by any of the above-described technical scheme breathes connecting line to inhale connecting line, because above-mentioned canister breathes connecting line
With above-mentioned technique effect, the canister respiratory system comprising above-mentioned canister breathing connecting line should also be imitated with correspondingly technology
Fruit.
The embodiment of the present invention additionally provides a kind of automobile, and it includes canister respiratory system, and the canister respiratory system is above-mentioned
Canister respiratory system, because above-mentioned canister respiratory system has above-mentioned technique effect, include the automobile of above-mentioned canister respiratory system
Also there should be correspondingly technique effect.
It the above is only the preferred embodiment of the present invention, it should be pointed out that these embodiments are merely to illustrate the present invention
Rather than limitation the scope of the present invention, moreover, after present disclosure has been read, relevant technical staff in the field can be with
Various changes or modification are made to the present invention, these equivalent form of values equally fall into the model that the application appended claims are limited
Enclose.
Claims (6)
1. a kind of canister breathes connecting line, it is characterised in that it includes triple valve, the first check valve, Venturi tube and the
Two check valves, the entrance of the triple valve are used to canister be connected by Valve EGR, the first outlet of the triple valve
For be connected inlet manifold and air throttle first pressure after pipeline connection；First check valve is arranged on the first outlet
Between pipeline after the described first pressure so that pipeline one-way flow after oil gas can only press from the triple valve to described first；Institute
State the second check valve to be arranged between the second outlet of the triple valve and the suction inlet of the Venturi tube so that oil gas can only
From the second outlet to the Venturi tube one-way flow；The inlet port of the Venturi tube is used for being connected booster and institute
Pipeline is connected after stating the pressure of inlet manifold, and the outlet of the Venturi tube is used for being connected the booster and air cleaner
Pressure before pipeline connection.
2. canister according to claim 1 breathes connecting line, it is characterised in that sensing is provided with the Venturi tube
Device, the sensor are used for the flow for detecting the oil gas flowed into by the suction inlet in the Venturi tube.
3. the canister breathing connecting line according to any one of claim 1 to 2, it is characterised in that the inlet port and institute
Pipeline is connected after stating the first pressure.
4. the canister breathing connecting line according to any one of claim 1 to 2, it is characterised in that the inlet port and company
The booster is connect with pipeline after the second pressure of the air throttle to be connected.
5. a kind of canister respiratory system, it includes canister breathing connecting line, it is characterised in that the canister breathes connecting line
Connecting line is breathed for the canister described in any one of Claims 1-4.
6. a kind of automobile, it includes canister respiratory system, it is characterised in that the canister respiratory system is described in claim 5
Canister respiratory system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711037421.1A CN107725220A (en) | 2017-10-30 | 2017-10-30 | A kind of canister breathing connecting line, canister respiratory system and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711037421.1A CN107725220A (en) | 2017-10-30 | 2017-10-30 | A kind of canister breathing connecting line, canister respiratory system and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107725220A true CN107725220A (en) | 2018-02-23 |
Family
ID=61202003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711037421.1A Pending CN107725220A (en) | 2017-10-30 | 2017-10-30 | A kind of canister breathing connecting line, canister respiratory system and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107725220A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057733A (en) * | 2019-04-30 | 2019-07-26 | 常州大学 | A kind of thermal manikin respiratory system experimental provision |
| CN110630410A (en) * | 2018-06-25 | 2019-12-31 | 比亚迪股份有限公司 | Carbon tank oil-gas desorption system for supercharged engine and vehicle |
| CN113137313A (en) * | 2021-04-27 | 2021-07-20 | 浙江吉利控股集团有限公司 | Method and device for calculating air inflow in cylinder of engine and readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009180095A (en) * | 2008-01-29 | 2009-08-13 | Aisan Ind Co Ltd | Negative pressure generating device |
| CN104033291A (en) * | 2013-03-08 | 2014-09-10 | 福特环球技术公司 | Multi-path purge ejector system |
| CN104989514A (en) * | 2013-12-19 | 2015-10-21 | 大陆汽车系统公司 | High performance vacuum venturi pump |
-
2017
- 2017-10-30 CN CN201711037421.1A patent/CN107725220A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009180095A (en) * | 2008-01-29 | 2009-08-13 | Aisan Ind Co Ltd | Negative pressure generating device |
| CN104033291A (en) * | 2013-03-08 | 2014-09-10 | 福特环球技术公司 | Multi-path purge ejector system |
| CN104989514A (en) * | 2013-12-19 | 2015-10-21 | 大陆汽车系统公司 | High performance vacuum venturi pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630410A (en) * | 2018-06-25 | 2019-12-31 | 比亚迪股份有限公司 | Carbon tank oil-gas desorption system for supercharged engine and vehicle |
| CN110630410B (en) * | 2018-06-25 | 2021-09-03 | 比亚迪股份有限公司 | Carbon tank oil-gas desorption system for supercharged engine and vehicle |
| CN110057733A (en) * | 2019-04-30 | 2019-07-26 | 常州大学 | A kind of thermal manikin respiratory system experimental provision |
| CN113137313A (en) * | 2021-04-27 | 2021-07-20 | 浙江吉利控股集团有限公司 | Method and device for calculating air inflow in cylinder of engine and readable storage medium |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180223 |
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| RJ01 | Rejection of invention patent application after publication |