CN201554574U - Fuel evaporation and desorption control device - Google Patents
Fuel evaporation and desorption control device Download PDFInfo
- Publication number
- CN201554574U CN201554574U CN2009202067369U CN200920206736U CN201554574U CN 201554574 U CN201554574 U CN 201554574U CN 2009202067369 U CN2009202067369 U CN 2009202067369U CN 200920206736 U CN200920206736 U CN 200920206736U CN 201554574 U CN201554574 U CN 201554574U
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- CN
- China
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- desorption
- carburetor
- charcoal jar
- fuel evaporation
- opening
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Abstract
The utility model discloses a fuel evaporation and desorption control device, which comprises an oil tank (1), a carbon tank (5), an air filter (11), a carburetor (11) and an engine (9), wherein the oil tank (1) is connected with a adsorption opening (3) of the carbon tank (5) through a fuel evaporating pipe (2); a desorption opening (4) of the carbon tank (5) is connected with a desorption opening (8) of the carburetor (11) through a gas guide tube; one end of the carburetor (11) is connected with the air filter (12) through the carburetor, and the other end thereof is connected with the engine through an air inlet pipe (10); a one-way safety valve (7) is arranged between the carbon tank (5) and the carburetor (11), the inlet of the one-way safety valve is connected with the desorption opening (4) o f the carbon tank (5), and the outlet thereof is connected with the desorption opening (8) of the carburetor (11). The fuel evaporation and desorption control device has the advantages of simple and reasonable structure, thorough combustion, good emission control effect, long service life and low cost.
Description
Technical field
The utility model relates to a kind of motorcycle fuel evaporation desorption control gear that is mainly used in.
Background technique
China from July 1st, 2008, come into effect " motorcycle pollutant emission limit and method of measurement (operating condition method) " (GB14622-2007), " trail bike pollutant emission limit and method of measurement " (GB18176-2007) and " motorcycle and trail bike fuel evaporation pollutant emission limit and method of measurement " (GB20998-2007).The structure of fuel evaporation desorption control gear is generally at present: the desorption of charcoal jar connects the desorption mouth of Carburetor, the PCV control valve of charcoal jar is connected on the suction tude between Carburetor and the motor, this Placement have following drawback: a, since intake pipe negative pressure higher when idling, low speed, the diaphragm of PCV control valve is opened at once behind the engine start, the charcoal jar begins desorption, oily vapours enters motor by Carburetor and burns, make air-fuel ratio, influence the idle stability and the idle exhaust emission of vehicle; B, this Placement because air fuel ratio is dense, cause problems such as easy carbon deposit of motor and burning spark plug when low speed, idling, motorcycle performance and reliability are had considerable influence; C, because the negative pressure of the suction tude between Carburetor and the cylinder head is very high, especially negative pressure is higher during the high speed oil return, damages the diaphragm of PCV control valve easily.
Summary of the invention
Insufficient for overcoming existing fuel evaporation desorption apparatus in idling, low speed burning; Too high, the easy carbon deposit of CO discharging and burn problems such as spark plug, diaphragm damage easily, cost height when idling, low speed, the purpose of this utility model provide that a kind of simple and reasonable, sufficient combustion, emission control are effective, long service life, fuel evaporation desorption control gear that cost is low.
The technological scheme that its technical problem that solves the utility model adopts, a kind of fuel evaporation desorption control gear, it comprises fuel tank, charcoal jar, air-strainer, Carburetor, motor, one-way relief valves, Carburetor one end is connected with air-strainer, the other end is connected with motor by suction tude, charcoal jar adsorption port is connected with fuel tank, and charcoal jar desorption mouth is connected with the one-way relief valves inlet, and the one-way relief valves outlet is connected with the desorption mouth of Carburetor.
After adopting said structure, control the desorption of charcoal jar between the utility model charcoal jar and desorption mouth and the Carburetor desorption mouth by one-way relief valves.When engine idle, low speed, the negative pressure of Carburetor desorption mouth is lower, one-way relief valves is in closed condition, charcoal jar this moment desorption not, when raising along with engine speed, the negative pressure of Carburetor desorption mouth increases, one-way relief valves is opened, the charcoal jar begins desorption, thereby efficiently solve existing Placement and just begin desorption at idling, low speed, cause air fuel ratio dense, influence the stability and the CO effluent concentration of idling, also solved cost height, complex structure, pipeline problem such as layout difficulty on car load simultaneously.The utility model the time just begins desorption because the charcoal jar does not carry out desorption when idling, low speed in middle and high speed, thus make engine air-fuel ratio rationally, sufficient combustion, emission effect be good, motor is not easy carbon deposit and burns spark plug; The utility model has been cancelled the PCV control valve of charcoal jar, between charcoal jar desorption mouth and Carburetor desorption mouth, be provided with one-way relief valves, not only reduced the volume of charcoal jar, make the desorption apparatus structure simpler, one-way relief valves this device in both as charcoal jar desorption switch, passage during also as charcoal jar desorption makes the desorption pipeline simple, and it is easier to arrange on car load.
Description of drawings
Fig. 1 is the utility model embodiment's a structural drawing.
Embodiment
Referring to Fig. 1, be the specific embodiments of a kind of fuel evaporation desorption apparatus of the utility model, it comprises fuel tank 1, charcoal jar 5, air-strainer 11, Carburetor 10, motor 9, fuel tank 1 is connected with the adsorption port 3 of charcoal jar 5 by vapourizer tube 2; The desorption mouth 4 of described charcoal jar 5 is connected with the desorption mouth 8 of Carburetor 11 by air pipe; Described Carburetor 11 1 ends are connected with air-strainer 12 by air pipe, and the other end is connected with motor 9 by suction tude 10; Between charcoal jar 5 and Carburetor 11 one-way relief valves 7 is set, its inlet is connected with the desorption mouth 4 of charcoal jar 5, and its outlet is connected with the desorption mouth 8 of Carburetor 11.
Can form vapor tension in fuel tank 1 when the fuel evaporation in the fuel tank 1, under certain pressure, steam is absorbed by active carbon along with vapourizer tube 2 enters charcoal jar 5 from charcoal jar adsorption port 3.When motor operation reaches the desorption mouth 8 negative pressure rising certain pressures of certain rotating speed, Carburetor, one-way relief valves 7 is opened, desorption mouth 4 negative pressure of charcoal jar make extraneous air enter charcoal jar 5 from atmospheric air port 6 simultaneously, make the fuel vapor in the charcoal jar carry out desorption, enter motor 9 burnings through Carburetor 11 and suction tude 10 again.
Claims (1)
1. a fuel evaporation desorption control gear comprises fuel tank (1), charcoal jar (5), air-strainer (11), Carburetor (10), motor (9), and described fuel tank (1) is connected with the adsorption port (3) of charcoal jar (5) by vapourizer tube (2); The desorption mouth (4) of described charcoal jar (5) is connected with the desorption mouth (8) of Carburetor (11) by air pipe; Described Carburetor (11) one ends are connected with air-strainer (12) by air pipe, the other end is connected with motor (9) by suction tude (10), it is characterized in that: between charcoal jar (5) and Carburetor (11), one-way relief valves (7) is set, its inlet is connected with the desorption mouth (4) of charcoal jar (5), and its outlet is connected with the desorption mouth (8) of Carburetor (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202067369U CN201554574U (en) | 2009-10-20 | 2009-10-20 | Fuel evaporation and desorption control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202067369U CN201554574U (en) | 2009-10-20 | 2009-10-20 | Fuel evaporation and desorption control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201554574U true CN201554574U (en) | 2010-08-18 |
Family
ID=42614256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202067369U Expired - Fee Related CN201554574U (en) | 2009-10-20 | 2009-10-20 | Fuel evaporation and desorption control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201554574U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863891A (en) * | 2016-05-26 | 2016-08-17 | 宁波拓普智能刹车系统有限公司 | Gasoline steam purification device utilizing electric magnetism-generating transmission principle |
| CN110657048A (en) * | 2018-06-29 | 2020-01-07 | 重庆金康新能源汽车有限公司 | Desorption structure for fuel oil in air inlet pipe |
-
2009
- 2009-10-20 CN CN2009202067369U patent/CN201554574U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863891A (en) * | 2016-05-26 | 2016-08-17 | 宁波拓普智能刹车系统有限公司 | Gasoline steam purification device utilizing electric magnetism-generating transmission principle |
| CN110657048A (en) * | 2018-06-29 | 2020-01-07 | 重庆金康新能源汽车有限公司 | Desorption structure for fuel oil in air inlet pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20171020 |