CN101323250A - Vehicle fuel oil evaporation control system - Google Patents
Vehicle fuel oil evaporation control system Download PDFInfo
- Publication number
- CN101323250A CN101323250A CNA2008101330696A CN200810133069A CN101323250A CN 101323250 A CN101323250 A CN 101323250A CN A2008101330696 A CNA2008101330696 A CN A2008101330696A CN 200810133069 A CN200810133069 A CN 200810133069A CN 101323250 A CN101323250 A CN 101323250A
- Authority
- CN
- China
- Prior art keywords
- control system
- fuel oil
- charcoal canister
- vehicle fuel
- oil evaporation
- 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.)
- Pending
Links
- 239000000295 fuel oil Substances 0.000 title claims description 19
- 230000008020 evaporation Effects 0.000 title claims description 14
- 238000001704 evaporation Methods 0.000 title claims description 14
- 239000003610 charcoal Substances 0.000 claims abstract description 24
- 239000002828 fuel tank Substances 0.000 claims abstract description 11
- 238000009423 ventilation Methods 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 238000010926 purge Methods 0.000 claims description 14
- 238000003745 diagnosis Methods 0.000 claims description 9
- 230000006698 induction Effects 0.000 claims description 3
- 230000008450 motivation Effects 0.000 claims description 3
- 239000000446 fuel Substances 0.000 abstract description 11
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000000746 purification Methods 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- 239000008187 granular material Substances 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
Images
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- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
Abstract
The invention relates to an automobile fuel evaporative control system which can realize the monitoring of fuel evaporative emission more effectively. The technical proposal is that in the automobile fuel evaporative control system, a fuel tank is connected with an active charcoal canister by a pipeline, the active charcoal canister is connected with an intake manifold of an engine by a purification electromagnetic valve and an intake pipeline of the active charcoal canister is provided with a ventilation electromagnetic valve. The system is characterized in that the intake pipeline of the active charcoal canister is also provided with an HC detection sensor.
Description
Technical field
The present invention relates to a kind of vehicle fuel oil evaporation control system.
Background technology
Traditional vehicle fuel oil evaporation emission control systems principle of work is, when variation of ambient temperature, the fuel volatile quantity of gasoline fuel tank strengthens, the fuel tank inner vapor increases, pressure strengthens, weight valve is backed down by fuel vapor, fuel vapor enter Charcoal canister by pipeline, active carbon in the Charcoal canister is adsorbed onto the fuel oil in the fuel vapor on the activated carbon granule, when driving engine during in the work of suitable operating mode, purge solenoid valve is opened, under the effect of engine air inlet tube degree of vacuum, fresh air enters canister from the canister atmosphere entry, will be adsorbed onto that fuel oil washes away on the activated carbon granule, and be drawn onto in the cylinder with the form of oil gas and burn, thereby avoid fuel vapor to flow to contaminated environment in the atmosphere.
Summary of the invention
Goal of the invention of the present invention is to provide a kind of vehicle fuel oil evaporation control system, can realize the monitoring to the fuel oil evaporation discharging more effectively.
Realize the object of the invention technical scheme:
A kind of vehicle fuel oil evaporation control system, fuel tank is connected with Charcoal canister by the road, Charcoal canister is through purge solenoid valve sending and receiving motivation induction maniflod, and the Charcoal canister admission line is provided with the ventilation electromagnetic valve, it is characterized in that: also be provided with the HC detecting sensor on the Charcoal canister admission line.
On the pipeline between Charcoal canister and the purge solenoid valve, also be provided with the diagnosis switch.
On fuel tank, also be provided with the steam pressure sensor.
The HC detecting sensor meets the ECU of automobile.
ECU is according to the switch of the detection signal control ventilation electromagnetic valve of HC detecting sensor.
Be connected to vacuum indicator on the diagnosis switch.
The steam pressure sensor meets the ECU of automobile.
The beneficial effect that the present invention has:
The present invention can monitor purge amount easily and accurately, can also in time monitor total system vapour leakage situation.
Description of drawings
Accompanying drawing is a structural representation of the present invention.
The specific embodiment
As shown in the figure, fuel tank 1 is connected with Charcoal canister 6 by the road, and Charcoal canister is through purge solenoid valve 8 sending and receiving motivation induction maniflods 9, and the Charcoal canister admission line is provided with ventilation electromagnetic valve 5, also is provided with HC detecting sensor 4 on the Charcoal canister admission line.
On the pipeline between Charcoal canister and the purge solenoid valve, also be provided with diagnosis switch 7, be connected to vacuum indicator on the diagnosis switch, be used to judge whether purge solenoid valve 8 can normal operation.
Also be provided with steam pressure sensor 2 on fuel tank, the steam pressure sensor meets the ECU of automobile.
When ambient temperature raises, weight valve 3 is backed down by the pressure of fuel vapor on the fuel tank 1, fuel vapor enter Charcoal canister 6 by pipeline, and the active carbon in the Charcoal canister is discharged to the clean air that the fuel oil in the fuel vapor will be adsorbed onto after also will adsorbing on the activated carbon granule in the atmosphere.When driving engine during in the work of suitable operating mode, purge solenoid valve 8 is opened, under the effect of engine intake manifold 9 degree of vacuum, fresh air enters Charcoal canister 6 by the ventilation electromagnetic valve, to be adsorbed onto that fuel oil washes away on the activated carbon granule, and enter driving engine with the form of oil gas through purge solenoid valve 8 and participate in burning.
Diagnosis switch 7 is in normally off, under normal circumstances, when purge solenoid valve is opened, can read certain degree of vacuum from the diagnosis switch.When purge solenoid valve clamping stagnation during, can continue to read air-distributor vacuum from the diagnosis switch in opening.When purge solenoid valve clamping stagnation in off position the time, vacuum manometer constantly shows bar pressure.
ECU can learn not leakage of fuel oil system by steam pressure sensor 2, and when the vapor pressure in the fuel tank was higher or lower than bar pressure, illustrating did not have steam leakage; In case when vapor pressure equated with bar pressure, then explanation had vapour leakage, warns.
When near the HC content the HC detecting sensor detects canister surpasses limit value, then by ECU according to detection signal, make ventilation electromagnetic valve 5 valve closings, and warn.
Claims (7)
1, a kind of vehicle fuel oil evaporation control system, fuel tank is connected with Charcoal canister by the road, Charcoal canister is through purge solenoid valve sending and receiving motivation induction maniflod, and the Charcoal canister admission line is provided with the ventilation electromagnetic valve, it is characterized in that: also be provided with the HC detecting sensor on the Charcoal canister admission line.
2, vehicle fuel oil evaporation control system according to claim 1 is characterized in that: be provided with the diagnosis switch on the pipeline between Charcoal canister and the purge solenoid valve.
3, vehicle fuel oil evaporation control system according to claim 2 is characterized in that: be provided with the steam pressure sensor on fuel tank.
4, vehicle fuel oil evaporation control system according to claim 3 is characterized in that: the HC detecting sensor meets the ECU of automobile.
5, vehicle fuel oil evaporation control system according to claim 4 is characterized in that: ECU is according to the switch of the detection signal control ventilation electromagnetic valve of HC detecting sensor.
6, according to any described vehicle fuel oil evaporation control system of claim 1-5, it is characterized in that: be connected to vacuum indicator on the diagnosis switch.
7, according to any described vehicle fuel oil evaporation control system of claim 3-5, it is characterized in that: the steam pressure sensor meets the ECU of automobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101330696A CN101323250A (en) | 2008-07-08 | 2008-07-08 | Vehicle fuel oil evaporation control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101330696A CN101323250A (en) | 2008-07-08 | 2008-07-08 | Vehicle fuel oil evaporation control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101323250A true CN101323250A (en) | 2008-12-17 |
Family
ID=40187009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101330696A Pending CN101323250A (en) | 2008-07-08 | 2008-07-08 | Vehicle fuel oil evaporation control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101323250A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486144A (en) * | 2010-12-06 | 2012-06-06 | 现代自动车株式会社 | Fuel tank vaporization gas purge system |
| CN103161617A (en) * | 2011-12-15 | 2013-06-19 | 北汽福田汽车股份有限公司 | Fuel evaporation control method of car, fuel evaporation control system of car and car |
| CN103180593A (en) * | 2010-10-14 | 2013-06-26 | 大陆汽车有限责任公司 | Method and apparatus for operating tank ventilation system |
| CN103963631A (en) * | 2013-02-06 | 2014-08-06 | 福特环球技术公司 | Capless refueling system cleaning by using engine vacuum |
| CN104564437A (en) * | 2014-12-26 | 2015-04-29 | 长沙众泰汽车工业有限公司 | Enhanced-type fuel evaporation discharge control system |
-
2008
- 2008-07-08 CN CNA2008101330696A patent/CN101323250A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103180593A (en) * | 2010-10-14 | 2013-06-26 | 大陆汽车有限责任公司 | Method and apparatus for operating tank ventilation system |
| CN103180593B (en) * | 2010-10-14 | 2016-03-09 | 大陆汽车有限责任公司 | For running the method and apparatus of fuel tank vent system |
| US9556828B2 (en) | 2010-10-14 | 2017-01-31 | Continental Automotive Gmbh | Method and apparatus for operating a tank ventilation system |
| CN102486144A (en) * | 2010-12-06 | 2012-06-06 | 现代自动车株式会社 | Fuel tank vaporization gas purge system |
| CN102486144B (en) * | 2010-12-06 | 2015-12-02 | 现代自动车株式会社 | Fuel tank vaporization gas purge system |
| CN103161617A (en) * | 2011-12-15 | 2013-06-19 | 北汽福田汽车股份有限公司 | Fuel evaporation control method of car, fuel evaporation control system of car and car |
| CN103161617B (en) * | 2011-12-15 | 2016-01-13 | 北汽福田汽车股份有限公司 | The fuel evaporation controlling method of automobile, system and automobile |
| CN103963631A (en) * | 2013-02-06 | 2014-08-06 | 福特环球技术公司 | Capless refueling system cleaning by using engine vacuum |
| CN103963631B (en) * | 2013-02-06 | 2017-12-05 | 福特环球技术公司 | Non-cover type fuel refill system is cleaned using engine vacuum |
| CN104564437A (en) * | 2014-12-26 | 2015-04-29 | 长沙众泰汽车工业有限公司 | Enhanced-type fuel evaporation discharge control system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20081217 |