CN203627050U - Motorcycle fuel tank fuel oil steam extraction mechanism with fuel oil buffer box - Google Patents

Abstract

The utility model relates to a motorcycle fuel tank fuel oil steam extraction mechanism with a fuel oil buffer box. The motorcycle fuel tank fuel oil steam extraction mechanism comprises a fuel tank and a fuel oil steam pipe. The fuel oil buffer box is fixed to the inner wall of the fuel tank, oil seepage holes communicated with a cavity in the box are respectively formed in the upper surface and the lower surface of the fuel oil buffer box, and the upper surface of the fuel oil buffer box is arranged at the highest position of the fuel tank in the use state. The inlet end of the fuel oil steam pipe penetrates through the lower surface of the fuel oil buffer box and enters the fuel oil buffer box. The fuel oil buffer box is divided into an upper cavity and a lower cavity through a separating plate, and the separating plate is provided with oil seepage holes communicating the upper cavity and the lower cavity. According to the motorcycle fuel tank fuel oil steam extraction mechanism, liquid fuel oil is prevented from entering the fuel oil steam pipe and a carbon tank fundamentally even if the fuel oil is shocked violently or the fuel tank is inclined by a large degree and even turns over, and just fuel tank fuel oil steam is extracted.

Description

A kind of band fuel oil buffer pocket motorcycle tank fuel-steam derivation mechanism

Technical field

The utility model relates to motorcycle tank fuel-steam derivation mechanism, and this structure can be avoided liquid fuel to enter canister completely and only oil tank fuel steam introduced to canister and and then entered in Carburetor.

Background technique

Fuel tank is that motorcycle is contained oily place, and liquid fuel enters in Carburetor by oil switch.For fuel oil in use can normally flow, require fuel tank inside and outside air pressure balance, so be provided with the pore that inside and outside atmosphere is communicated with in fuel tank cap.Meanwhile, due to the characteristic of fuel oil (mainly referring to gasoline) self, in fuel tank, above liquid level, inevitably there is oil vapor.In traditional Oiltank structure, these oil vapors are directly discharged in atmosphere by the pore of equilibrium air pressure.Along with raising, the particularly appearance of state's III standard that motorcycle environmental protection and energy saving require, above-mentioned processing mode is prohibited.In order to meet state's III requirement, on traditional Oiltank structure basis, have additional fuel-steam derivation mechanism, utilize this mechanism that fuel-steam is drawn, after processing by canister, again enter Carburetor for engine combustion, both avoided being directly discharged into the pollution in atmosphere, air being produced, having effectively utilized again the calorific value of oil vapor, is to kill two birds with one stone.But, existing fuel-steam derivation mechanism is in drawing oil vapor, also liquid fuel may be drawn, particularly at the fierce concussion of fuel oil or fuel tank in larger angle of inclination, liquid fuel just probably enters fuel-steam pipe and enters canister.

Model utility content

The deficiency of also easily bringing liquid fuel into canister for prior art when oil steam in oil tank is drawn, the purpose of this utility model is to provide a kind of motorcycle tank fuel-steam derivation mechanism that can avoid liquid fuel to enter canister completely and only oil tank fuel steam to be drawn.

The technical solution of the utility model is achieved in that a kind of band fuel oil buffer pocket motorcycle tank fuel-steam derivation mechanism, it comprises fuel tank and fuel-steam pipe, it is characterized in that: be fixed with fuel oil buffer pocket at inner wall of oil tank, the upper surface of fuel oil buffer pocket and lower surface are equipped with the oil seepage hole communicating with box inner chamber, fuel oil buffer pocket upper surface is positioned at the extreme higher position of fuel tank use state, fuel-steam pipe entrance point enters in fuel oil buffer pocket through fuel oil buffer pocket lower surface, and fuel oil buffer pocket inner chamber is communicated with fuel-steam pipe.

Described fuel oil buffer pocket is divided into upper and lower two chambers by dividing plate, and dividing plate is provided with oil seepage hole upper and lower two chambers are communicated with, and fuel-steam pipe entrance point enters chamber above through dividing plate.

On fuel-steam pipe or on fuel oil buffer pocket, supporting element is installed, supporting element is fixed on inner wall of oil tank.

The utility model can effectively prevent that liquid fuel from entering fuel-steam pipe and then entering canister, though at the fierce concussion of fuel oil or fuel tank in larger angle of inclination, be even also so in tumbling, and only oil tank fuel steam is drawn.Because fuel oil will enter fuel-steam pipe, must be introduced into fuel oil buffer pocket, only have and in fuel oil buffer pocket, fill just likely oil-feed of fuel-steam pipe under oil condition, and fuel oil will be filled fuel oil buffer pocket by tiny oil seepage hole and at least needs two hours, the long time like this, already fuel tank is processed under normal working state.Once pasta is lower than fuel oil buffer pocket lower surface, the fuel oil infiltering in box again will be toward exosmosing, and therefore fuel oil can not enter fuel-steam pipe.But the structure that above-mentioned fuel oil buffer pocket adds oil seepage hole does not affect normally drawing of oil vapor.

Accompanying drawing explanation

Fig. 1-the utility model structural representation;

Fig. 2-fuel oil buffer pocket and fuel-steam pipe connection diagram.

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

Referring to Fig. 1 and Fig. 2, from scheming, can find out, the utility model band fuel oil buffer pocket motorcycle tank fuel-steam derivation mechanism, it comprises fuel tank 1 and fuel-steam pipe 2, be fixed with fuel oil buffer pocket 3 at fuel tank 1 inwall, the upper surface of fuel oil buffer pocket 3 and lower surface are equipped with the oil seepage hole 4 communicating with box inner chamber, fuel oil buffer pocket 3 upper surfaces are positioned at fuel tank 1 and use the extreme higher position of state, fuel-steam pipe 2 entrance points enter in fuel oil buffer pocket through fuel oil buffer pocket 3 lower surfaces, and fuel oil buffer pocket inner chamber is communicated with fuel-steam pipe.The mode of communicating here can have following two kinds: 1, fuel-steam pipe entrance point withstands on fuel oil buffer pocket upper surface, at fuel-steam pipe entrance point, aperture is set both are communicated with simultaneously; 2, there is gap in fuel-steam pipe upper end and fuel oil buffer pocket upper surface, by this gap, both is communicated with.

Described fuel oil buffer pocket 3 is divided into upper and lower two chambers by dividing plate 5, and dividing plate 5 is provided with oil seepage hole 4 upper and lower two chambers are communicated with, and fuel-steam pipe 2 entrance points enter chamber above through dividing plate 5.

Fuel-steam enters fuel oil buffer pocket from the oil seepage hole on fuel oil buffer pocket 3 upper and lower surfaces, chamber I above the fuel oil entering from lower surface oil seepage hole and oil vapor enter into by the oil seepage hole dividing plate.Above the fuel oil entering from upper surface oil seepage hole and oil vapor are directly stored in chamber I, above fuel-steam in chamber I by fuel-steam pipe directly in canister, upper chamber's I and lower chambers II can play the effect that stores fuel oil.

For the needs of processing, above-mentioned fuel oil buffer pocket is designed to the structure shown in Fig. 2, and fuel oil buffer pocket is made up of upper and lower two-part, and on fuel oil buffer pocket, part is welded and fixed with dividing plate, and dividing plate is partly welded and fixed again with under fuel oil buffer pocket.The periphery of dividing plate becomes the intermediate portion of fuel oil buffer pocket periphery.

Supporting element 6 is installed on fuel-steam pipe 2 or on fuel oil buffer pocket 3, by supporting element 6 by partial fixing shown in Fig. 2 in fuel tank 1 inwall, avoided single fuel-steam pipe and fuel oil buffer pocket to be fixed on fuel tank and easily produced the problem of rocking, stability is better.

Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.

Claims (2)

1. a band fuel oil buffer pocket motorcycle tank fuel-steam derivation mechanism, it comprises fuel tank and fuel-steam pipe, it is characterized in that: be fixed with fuel oil buffer pocket at inner wall of oil tank, the upper surface of fuel oil buffer pocket and lower surface are equipped with the oil seepage hole communicating with box inner chamber, fuel oil buffer pocket upper surface is positioned at the extreme higher position of fuel tank use state, fuel-steam pipe entrance point enters in fuel oil buffer pocket through fuel oil buffer pocket lower surface, and fuel oil buffer pocket inner chamber is communicated with fuel-steam pipe;

Described fuel oil buffer pocket is divided into upper and lower two chambers by dividing plate, and dividing plate is provided with oil seepage hole upper and lower two chambers are communicated with, and fuel-steam pipe entrance point enters chamber above through dividing plate.

2. a kind of band fuel oil buffer pocket motorcycle tank fuel-steam derivation mechanism according to claim 1, is characterized in that: on fuel-steam pipe or on fuel oil buffer pocket, supporting element is installed, supporting element is fixed on inner wall of oil tank.

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