CN201865796U - Evaporation control system for fuel oil of motorcycle - Google Patents
Evaporation control system for fuel oil of motorcycle Download PDFInfo
- Publication number
- CN201865796U CN201865796U CN 201020614668 CN201020614668U CN201865796U CN 201865796 U CN201865796 U CN 201865796U CN 201020614668 CN201020614668 CN 201020614668 CN 201020614668 U CN201020614668 U CN 201020614668U CN 201865796 U CN201865796 U CN 201865796U
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- CN
- China
- Prior art keywords
- carburetor
- desorption
- charcoal jar
- fuel
- fuel tank
- 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.)
- Expired - Fee Related
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- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
Abstract
The utility model discloses an evaporation control system for the fuel oil of a motorcycle, which comprises an oil tank (13), an air filter (16), a carburetor (14) and an engine (17), wherein the oil tank (13) is connected with the carburetor (14) by a gasoline filter (18), the air filter (16) is directly connected with the carburetor (14), the carburetor (14) is connected with the engine (17) by an air inlet pipe (19), a carbon pot is arranged between the oil tank (13) and the carburetor (14), an adsorption port (21) of the carbon pot is connected with the oil tank (13) by a fuel oil cutting-off valve (20), and a desorption port (22) of the carbon pot is connected with a desorption interface (15) of the carburetor (14). The utility model has the advantage of simple and reasonable structure. By adopting the utility model, the air-fuel ratio of the engine can be lowered, so that the combustion of the engine is more sufficient, and the desorption effect is better. Moreover, the service life of the carbon pot is also prolonged effectively, and the production cost is lowered.
Description
Technical field
The utility model relates to a kind of fuel control system, particularly a kind of motorcycle fuel evaporation control system.
Background technique
At present, traditional fuel evaporation control system (as Fig. 1) used on the motorcycle comprises fuel tank 13, empty filter 16, Carburetor 14 and motor 17, described fuel tank 13 is connected with Carburetor 14 by gasoline filter 18, described empty filter 16 directly is connected with Carburetor 13, described Carburetor 14 is connected with motor 17 by suction tude 19, described suction tude 19 is connected with secondary air valve 23 by negative pressure pipe 24, between fuel tank 13 and Carburetor 14, be provided with the charcoal jar, the adsorption port 21 of described charcoal jar is connected with fuel tank 13, desorption mouth 21 is connected with the desorption interface 15 of Carburetor 14, negative pressure interface 15 is connected with negative pressure pipe 24 with three-way pipe by pipeline, and there is drawback in this traditional fuel evaporation control system:
1. because the negative pressure of engine air inlet tube is very high when idling, low speed, engine start final vacuum film is opened at once, the charcoal jar just begins desorption, oil vapour is inhaled in the Carburetor, and when the charcoal jar was filled, desorption rate was very big, make air fuel ratio become dense, and this moment, engine temperature was relatively low, caused burning insufficient, had influenced the emission control of tail gas.
2. because the negative pressure of engine air inlet tube is very high, especially in the high speed oil return negative pressure can reach-more than the 60Kpa, be easy to damage vacuum diaphragm like this, cause car load not have idling, start difficulty.
The model utility content
The purpose of this utility model just provides a kind of motorcycle fuel evaporation control system that can fine control fuel-steam molecule carries out adsorption desorption work.
The purpose of this utility model is to realize by such technological scheme, a kind of motorcycle fuel evaporation control system, comprise fuel tank, empty filter, Carburetor and motor, described fuel tank is connected with Carburetor by gasoline filter, described empty filter directly is connected with Carburetor, described Carburetor is connected with motor by suction tude, between fuel tank and Carburetor, be provided with the charcoal jar,: the adsorption port of described charcoal jar is connected with fuel tank by the fuel-cut valve, and the desorption mouth of described charcoal jar is connected with the desorption interface of Carburetor.
Described charcoal jar comprises charcoal jar body, lower cover and PCV lid, in charcoal jar body, be provided with activated carbon powder and dividing plate, described charcoal jar body top and PCV lid surround a cavity, the described vacuum diaphragm that cavity is divided into negative cavity and adsorbent chamber that in cavity, is provided with, described sorption channel and the desorption passage that all is communicated with that be provided with on charcoal jar body top with adsorbent chamber, described PCV cover be provided with PCV lid be the negative pressure channel of one, one end of described negative pressure channel is communicated with negative cavity, and the other end is communicated with the middle part of desorption passage.
Described fuel tank is communicated with sorption channel by fuel-cut valve and adsorption port, and the desorption interface of described Carburetor is by pipeline and desorption mouth and desorption channel connection.
Owing to adopted technique scheme, the utlity model has simple and reasonable advantage, adopt it can reduce engine air-fuel ratio, make engine combustion more abundant, the desorption better effects if, and effectively prolonged working life of charcoal jar, reduced cost of production.
Description of drawings
Description of drawings of the present utility model is as follows:
Fig. 1 is original fuel evaporation control system structural representation;
Fig. 2 is a structural representation of the present utility model;
Fig. 3 is a charcoal jar structure schematic representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail; but the utility model is not limited to these mode of executions; any on the present embodiment essence spirit improvement or substitute, still belong to the utility model claim scope required for protection.
Embodiment 1: as shown in Figure 2, a kind of motorcycle fuel evaporation control system, comprise fuel tank 13, empty filter 16, Carburetor 14 and motor 17, described fuel tank 13 is connected with Carburetor 14 by gasoline filter 18, described empty filter 16 directly is connected with Carburetor 14, described Carburetor 14 is connected with motor 17 by suction tude 19, between fuel tank 13 and Carburetor 14, be provided with the charcoal jar, the adsorption port 21 of described charcoal jar is connected with fuel tank 13 by fuel-cut valve 20, and the desorption mouth 22 of described charcoal jar is connected with the desorption interface 15 of Carburetor 14.
The utility model is work like this: the oil gas molecule in the fuel tank 13 by fuel-cut valve 20, enters in the charcoal jar under the effect of malleation, saturated until the charcoal jar, after saturated, unnecessary oil gas molecule can overflow by the bottom of charcoal jar, has so just guaranteed the normal operating pressure of fuel tank 13.Behind motorcycle initiating, the negative pressure that the desorption interface 15 of Carburetor 14 is produced, be delivered to desorption mouth 22 places of charcoal jar by pipeline, the oil gas Molecular Adsorption that is stored in the charcoal jar is walked, the oil gas molecule that is sucked away enters into motor 17 internal combustions by suction tude 19 and burns.Along with the continuous running of motor 17, the pasta in the fuel tank 13 descends will produce certain negative pressure, at this moment, air outside, the air hole by charcoal pipe bottom oppositely enters, by fuel-cut valve 20, enter into fuel tank 13, with the working pressure in the trim tank 13.
As shown in Figure 3, described charcoal jar comprises charcoal jar body 1, lower cover 2 and PCV lid 3, in charcoal jar body 1, be provided with activated carbon powder 4 and dividing plate 5,1 one surrounds a cavity with PCV lid 3 on the described charcoal jar body, the described vacuum diaphragm 8 that cavity is divided into negative cavity 6 and adsorbent chamber 7 that in cavity, is provided with, described sorption channel 9 and the desorption path 10 that all is communicated with that be provided with on charcoal jar body 1 top with adsorbent chamber 7, described PCV lid 3 is provided with PCV lid 3 and is the negative pressure channel 11 of one, one end of described negative pressure channel 11 is communicated with negative cavity 6, and the other end is communicated with the middle part of desorption path 10.
Further, described fuel tank 13 is communicated with sorption channel 9 by fuel-cut valve 20 and adsorption port 21, and the desorption interface 15 of described Carburetor 14 is communicated with the desorption path 10 by pipeline and desorption mouth 22.
The charcoal jar is work like this in the utility model: at first sorption channel 9 and desorption path 10 are communicated with the desorption mouth 15 of motorcycle tank 13 and Carburetor 14 respectively; The oil gas molecule of evaporation is under the effect of malleation in the motorcycle tank 13, enter in the sorption channel 9, adsorbed until saturated by the activated carbon powder in the charcoal jar body 14, after activated carbon powder 4 is saturated, still have unnecessary oil gas molecule, then can pass dividing plate 5 and lower cover 2 leads to atmosphere, guarantee the normal operating pressure of fuel tank.After motor opens combustion, the negative pressure of behind the Carburetor desorption, locating to produce, can enter in the negative cavity 6 by desorption path 10 and negative pressure channel 11, according to negative-pressure adsorption principle, progressively produce vacuum in the negative cavity 6, when the degree of vacuum in the negative cavity 6 acquires a certain degree, the adsorption force that produces on the vacuum diaphragm 8 is made a call to 8 with vacuum diaphragm and is opened, at this moment, the negative pressure in the desorption path 10 will be transferred in the charcoal jar body 1 by the passage of opening, siphon away the oil gas molecule that is adsorbed on around the activated carbon powder 4 by sorption channel 9, by the desorption interface 15 of Carburetor 14,, enter in motor 17 firing chambers and burn through suction tude 19.
In the utility model, utilize desorption mouth 15 negative pressure when idling, low speed of Carburetor 14 low, vacuum diaphragm 8 is not opened, and the charcoal jar can not carry out desorption; The desorption mouth negative pressure of Carburetor raises when middle and high speed, open vacuum diaphragm 8, the charcoal jar just begins desorption, thus when having significantly reduced charcoal jar oil gas desorption to the influence of engine air-fuel ratio, because sufficient combustion, exhaust emissions are effective, motor is not easy carbon deposit and burns spark plug.
Because the negative pressure of the desorption interface 15 of Carburetor is low, basically less than 3Kpa, so vacuum diaphragm 8 can not damaged because negative pressure is too high, has effectively prolonged the working life of charcoal jar.
Claims (3)
1. motorcycle fuel evaporation control system, comprise fuel tank (13), empty filter (16), Carburetor (14) and motor (17), described fuel tank (13) is connected with Carburetor (14) by gasoline filter (18), described empty filter (16) directly is connected with Carburetor (14), described Carburetor (14) is connected with motor (17) by suction tude (19), between fuel tank (13) and Carburetor (14), be provided with the charcoal jar, it is characterized in that: the adsorption port of described charcoal jar (21) is connected with fuel tank (13) by fuel-cut valve (20), and the desorption mouth (22) of described charcoal jar is connected with the desorption interface (15) of Carburetor (14).
2. motorcycle fuel evaporation control system as claimed in claim 1, it is characterized in that: described charcoal jar comprises charcoal jar body (1), lower cover (2) and PCV lid (3), in charcoal jar body (1), be provided with activated carbon powder (4) and dividing plate (5), (1) portion and PCV lid (3) surrounds a cavity on the described charcoal jar body, the described vacuum diaphragm (8) that cavity is divided into negative cavity (6) and adsorbent chamber (7) that in cavity, is provided with, described sorption channel (9) and the desorption passage (10) that all is communicated with that be provided with on charcoal jar body (1) top with adsorbent chamber (7), described PCV lid (3) is provided with PCV lid (3) and is the negative pressure channel of one (11), one end of described negative pressure channel (11) is communicated with negative cavity (6), and the other end is communicated with the middle part of desorption passage (10).
3. motorcycle fuel evaporation control system as claimed in claim 2, it is characterized in that: described fuel tank (13) is communicated with sorption channel (9) by fuel-cut valve (20) and adsorption port (21), and the desorption interface (15) of described Carburetor (14) is communicated with desorption passage (10) by pipeline and desorption mouth (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020614668 CN201865796U (en) | 2010-11-19 | 2010-11-19 | Evaporation control system for fuel oil of motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020614668 CN201865796U (en) | 2010-11-19 | 2010-11-19 | Evaporation control system for fuel oil of motorcycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201865796U true CN201865796U (en) | 2011-06-15 |
Family
ID=44136953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020614668 Expired - Fee Related CN201865796U (en) | 2010-11-19 | 2010-11-19 | Evaporation control system for fuel oil of motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201865796U (en) |
-
2010
- 2010-11-19 CN CN 201020614668 patent/CN201865796U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20110615 Termination date: 20191119 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |