CN2898340Y

CN2898340Y - U-type carbon tank with fuel-oil evaporating controll for gasoline vehicle

Info

Publication number: CN2898340Y
Application number: CN 200520025925
Authority: CN
Inventors: 王善嘉; 杨琦玲
Original assignee: Gelinlifu New Tech Co Ltd Tianjin City
Current assignee: Gelinlifu New Tech Co Ltd Tianjin City
Priority date: 2005-05-19
Filing date: 2005-05-19
Publication date: 2007-05-09
Anticipated expiration: 2015-05-19

Abstract

The utility model belongs to a fuel evaporation control device of gasoline-powered vehicles, relating to a U-shaped fuel evaporation control carbon canister. The main structure of the carbon canister is a plastic housing with activated carbons arranged inside; the housing has an adsorption port, an air vent port and a desorption port which is respectively communicated with the atmosphere or a fuel tank; activated carbons are arranged in the carbon square-cavity to adsorb the evaporating gasoline. The utility model has the advantages that: the utility model is to solve the problem of the low adsorption rate of the prior carbon canister. First the carbon square-cavity is designed to have a U-shaped structure, prolonging the adsorption journey from the adsorption port to the air vent port, effectively improving the adsorption effect. Second a baffle is designed to have a flexible structure, and part of the baffle outer contour is designed to be odontoid, realizing the flexible structure which is beneficial to the matching of the baffle and the housing cavity. The lower cover of the carbon canister tightly presses the activated carbons in the carbon canister through springs and the baffle, maintaining a certain level of density, reducing gaps between carbon granales, beneficial to play of the activated carbon performance, improving the adsorption effect to the greatest extent, while decreasing the processing difficulties of the baffle die.

Description

Gasoline car U type fuel evaporation control canister

Technical field

The utility model relates to a kind of fuel evaporation control gear that is used for gasoline automobile, and this device is the interior gasoline volatilization of Control of Automobile fuel tank effectively, and fuel-economizing and environmental-protection function are arranged.

Background technique

At present, the domestic and international fuel evaporation control canister that uses of gasoline automobile, its structure is roughly plastic casing, in active carbon is housed, have adsorption port, atmosphere entry and desorption mouth to communicate with atmosphere and fuel tank respectively on the housing, inner carbon chamber is equipped with the gasoline that active carbon is used to adsorb evaporation.Its shortcoming has 2 points, and the one, carbon chamber is an overall space, the absorption path is short, influences adsorption effect; The 2nd, the structural analysis of similar products at home and abroad, the structure of baffle plate mostly is rigid construction, plate washer cooperates wayward with the housing inner cavity size, not only manufacturing brings difficulty to Baffle mould, and cause the density of active carbon after assembling in the canister wayward or produce abnormal sound, the contact of intergranular is not tight, and oil gas passes through from the gap, influences adsorption effect.

Summary of the invention

The utility model provides a kind of canister in order to overcome above-mentioned the deficiencies in the prior art, is used for the fuel evaporation control of gasoline automobile, the adsorption efficiency height, and effectively gasoline volatilization in the Control of Automobile fuel tank has fuel-economizing and environmental-protection function.

The technological scheme that its technical problem that solves the utility model adopts is:

One, the utility model is provided with a dividing plate with the carbon chamber bosom, makes inner chamber form U type structure.The distance of this structure to prolong from the adsorption port to the atmosphere entry prolonged the absorption distance of active carbon to gasoline vapor, improved adsorption effect.

Two, baffle design becomes flexible structure.Rigid baffle external frame localized design is become the dentation pattern, realize flexible structure, help cooperating of plate washer and housing inner chamber.The canister lower cover is pressed on active carbon in the canister by spring, plate washer, keeps certain density, reduces the carbon granules gap, is beneficial to the performance of active carbon performance, farthest improves adsorption effect, has also reduced the difficulty of processing of Baffle mould simultaneously.

Description of drawings

Fig. 1 is a structural representation of the present utility model, the A-A sectional view.

Fig. 2 is the utility model plan structure schematic representation.

Fig. 3 is the schematic representation of critical piece plate washer of the present utility model.

Among the figure, 1. atmosphere entry, 2. desorption mouth, 3. adsorption port, 4. dividing plate, 5. active carbon, 6. housing, 7. filter paper, 8. plate washer, 9. spring, 10. lower cover.

Embodiment

According to Fig. 1, Fig. 2, shown in Figure 3, the utility model structure is mainly by atmosphere entry (1), desorption mouth (2), and adsorption port (3), dividing plate (4), active carbon (5), housing (6), filter paper (7), baffle plate (8), spring (9), lower cover (10) is formed.

Its working principle is: when ambient temperature changes or when driving, gasoline rocks in fuel tank, fuel oil start vaporizer in the fuel tank, gasoline is by the breathing pipe of fuel tank, be discharged into canister by adsorption port (3), utilize the distinctive adsorption performance of active carbon (5), gasoline vapour is stored.Because atmosphere communicates by atmosphere entry (1) with canister, when driving a vehicle, will be stored in oil gas in the active carbon and bring to motor and burn by desorption mouth (2).When automobile in state of rest, the oily vapour that ambient temperature will be stored in when descending in the canister is taken back fuel tank through adsorption port (3), thereby has reduced leaking of oily vapour, has protected environment, has saved the energy.

According to Fig. 1, the housing inner chamber is provided with dividing plate, makes inner chamber form U type structure, and adsorption port (3) becomes U type structure to the path of atmosphere entry (1), has prolonged the absorption path.

According to Fig. 1 and Fig. 2, Fig. 3, in assembling, active carbon (5) is loaded on housing (6) inner chamber, plate washer (8) is installed, its flexible characteristic can slide it at inner chamber, canister lower cover (10) is pressed on active carbon (5) in the canister by spring (9), plate washer (8), keeps certain density, reduces the carbon granules gap.

Claims

1, a kind of gasoline car U type fuel evaporation control canister, its structure is a plastic casing, in active carbon is housed, there are adsorption port, atmosphere entry and desorption mouth to communicate with fuel tank, atmosphere and motor respectively on the housing, inner carbon chamber is equipped with the gasoline that active carbon is used to adsorb evaporation, it is characterized in that: design one dividing plate (4) in housing (6) the canister carbon chamber makes inner chamber form U type structure.

2, gasoline car U type fuel evaporation control canister according to claim 1, it is characterized in that: baffle plate (8) external frame localized design becomes the dentation pattern, be connected to the inner chamber of housing (6) and be slidingly matched, the pressure that static structure is a lower cover (10) by spring (9) acts on baffle plate (8).