CN1892016A

CN1892016A - Fuel supplying device

Info

Publication number: CN1892016A
Application number: CNA200510124350XA
Authority: CN
Inventors: 光藤英雄; 井上诚三
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2005-06-30
Filing date: 2005-11-25
Publication date: 2007-01-10
Also published as: JP2007009806A; TWI276739B; DE102005058248A1; TW200700638A

Abstract

Provided a fuel supply device capable of effectively using fuel by supplying fuel under a normal condition even under a condition where quantity of remaining fuel gets small and a condition where an attitude changes such as inclination of vehicle. This fuel supply device 100 includes a sub-tank 20, and a fuel pump 10 fixed and installed in the sub-tank 20, installed in a fuel tank 50 of the vehicle and feeds fuel Fb flowing out of a fuel tank 50 and flowing into the sub-tank 20, to an engine by the fuel pump 10. Filtering material 30 is filled in a lower end part of the sub-tank 20, a filter chamber 22 including a fuel flow-in hole is fixed, and a suction port 11 of the fuel pump 10 is joined to a joining port 20a of the filter chamber 22.

Description

Fuel supplying device

Technical field

The present invention relates to a kind of fuel supplying device, petrolift is installed in the fuel tank of vehicle dipping, this fuel supplying device is used for fuel in the case is offered motor, be particularly related to a kind of like this fuel supplying device, it has and is used for the only auxiliary tank of surplus minute quantity of the fuel of fueling in fuel tank effectively.

Background technique

In existing automobile fuel supply device, has under the state that in fuel tank, is impregnated with petrolift the fuel supplying device of fuel in the motor supply bin.A kind of like this device is disclosed in this kind fuel supplying device, it constitutes: by small-sized auxiliary tank is set in fuel tank, and in this auxiliary tank, petrolift is set, even vehicle has a down dip at the state that fuel tails off, even perhaps level of fuel is owing to anxious acceleration and deceleration etc. are tilted, because residual in the auxiliary tank have fuel, thereby still can continue fueling.(for example, with reference to No. 2556097 communique Fig. 1 of Japanese Patent Laid.)

In aforesaid automobile fuel supply device, by auxiliary tank is set, even vehicle has a down dip at the state that fuel tails off, even perhaps level of fuel tilts, still residual in the auxiliary tank have fuel.But according to the position of auxiliary tank in fuel tank, residual fuel tails off according to the true dip direction of vehicle in the auxiliary tank.In addition, even the position of auxiliary tank in fuel tank is provided with in position, under the situation that vehicle tilts significantly, residual fuel tails off in the auxiliary tank, and fuel supply is broken down.

Summary of the invention

The present invention proposes in order to solve above-mentioned problem, its objective is provides a kind of fuel supplying device, under the state that the surplus of fuel tails off, even under the state that attitudes such as inclination of vehicle change, even perhaps level of fuel is owing to anxious acceleration and deceleration etc. are tilted, still normal fuel supply can be carried out, and fuel can be effectively utilized.

The fuel supplying device that the present invention relates to, have auxiliary tank that forms with thermoplastic synthetic resin and the petrolift that is fixed in this auxiliary tank, this fuel supplying device is installed in the fuel tank of vehicle, and the fuel that is used for flowing into auxiliary tank in fuel tank offers motor by above-mentioned petrolift, this fuel supplying device constitutes, underpart at auxiliary tank is fixed with the filter chamber, be filled with the filtering material that constitutes by foam material or nonwovens in this filter chamber, and have fuel inflow hole, the fuel pump intake engages with this filter chamber.

According to fuel supplying device of the present invention, be fixed with the filter chamber in the underpart of auxiliary tank, be filled with the filtering material that constitutes by foam material or nonwovens etc. in this filter chamber, and have the fuel inflow entrance.This filter chamber is full of fuel all the time by capillarity.Because this filter chamber engages with the fuel pump intake, so even under the state that attitudes such as inclination of vehicle change, also can proceed normal fuel supply.

In addition, filter chamber in the downside thermal weld of auxiliary tank and form the filter chamber, and this filters chamber by forming with above-mentioned auxiliary tank identical materials.

Therefore, owing to this filter chamber engages with the fuel pump intake, thereby component number is few, it is simple to constitute, and the state that is provided with of petrolift also becomes stable status.

Description of drawings

Fig. 1 is the sectional drawing of the fuel supplying device of expression embodiment of the present invention.

Fig. 2 is the amplification profile of filter chamber's part of Fig. 1.

Fig. 3 is the amplification profile of other mode of executions of expression filter chamber part.

The explanation sectional drawing of the state of the fuel supplying device when Fig. 4 is the expression inclination of vehicle.

Embodiment

Below, describe the present invention in conjunction with the accompanying drawings in detail, come further clear and definite above-mentioned and other purpose, feature, form and advantage of the present invention.

Mode of execution 1

Below, according to Fig. 1 to Fig. 4 embodiments of the present invention are described.Fig. 1 is the sectional drawing of the user mode of expression fuel supplying device, and in the drawings, 50 are arranged on the fuel tank in the vehicle, are provided with opening portion 50a at end face.This opening portion 50a is equipped with the lid 52 with sealing gasket 51 by screw.And though omitted in the drawings, be provided with at the peripheral portion of opening portion 50a: assembly department is used for fuel supplying device 100 described later is installed in the fuel tank; Supplying pipe 53 is used for from fuel supplying device 100 to the motor fueling; Electric wire is connected fuel supplying device 100 with battery; Perhaps be used to show the paths such as signaling line of fuel quantity.

And, for convenience of explanation, compare with lid 52 grades with fuel tank 50, fuel supplying device 100 amplifications are illustrated.

Fuel supplying device 100 has petrolift 10, auxiliary tank 20, filtering material 30 etc.Petrolift 10 is Wesco pump (wesco pump), and it is the motoring rotation of power supply by the battery with vehicle, the 11st, and suction port, the 12nd, discharge opening.But auxiliary tank 20 forms the tubular at the end by the heat thermoplasticity synthetic resin (for example polyacetal resin) of petrol-resistance, and small-sized forms the degree that inside can be provided with petrolift 10.The 21st, filter chamber, form by the thermoplastic synthetic resin identical, and be arranged on the downside of auxiliary tank 20 by thermal weld with auxiliary tank 20.Thermal weld is undertaken by ultrasonic method or vibratory drilling method etc.Form filter chamber 22 by this thermal weld of filtering chamber 21.20b represents by the weld part of thermal weld.Be provided with on filter chamber 22 and engage a mouthful 20a, this joint mouthful 20a is used to engage the suction port 11 of petrolift 10.In the side of auxiliary tank 20 at a place or many places be provided with one-way valve 23 so that the fuel that flow into auxiliary tank 20 from fuel tank 50 can not be back in the fuel tank 50.

Under the joint mouth 20a of auxiliary tank 20 and state that suction port 11 engages, petrolift 10 remains in the auxiliary tank 20, and supplying pipe 53 is connected in discharge opening 12.Upper end at the auxiliary tank 20 that keeps petrolift 10 is provided with support 24, and this support 24 is installed on the opening portion 50a of fuel tank 50.As mentioned above, supplying pipe 53, fuel supplying device 100 is connected the electric wire on the battery or is used to show the signaling line etc. of the amount of fuel, the path of the peripheral portion by opening portion 50a is connected with stipulating mechanism.And, be provided with fuel inflow hole 22a in filtration chamber 21 grades, so that fuel flows into filter chamber 22.Fa represents the fuel in the fuel tank 50.Fb represents to flow into the fuel in the auxiliary tank 20.

Be filled with filtering material 30 in this filter chamber 22.As shown in Figure 2, the shape of filtering material 30 and filter chamber 22 is consistent and formed by foam material.Foam material is to use the synthetic resin of petrol-resistance to be processed into the spongiform material that pore is communicated with.And filtering material 30 also can be the nonwovens of the lamination synthetic resin fiber that used petrol-resistance and the material that forms.Being filled in of this filtering material 30 carried out 21 thermal welds of filtration chamber when the auxiliary tank 20.

As filtering material 30, the material that laminated nonwoven fabric forms normally forms by the small pieces of the nonwovens of the multiple shape of lamination repeatedly.If the either party (perhaps both sides) at auxiliary tank 20 or filtration chamber 21 goes up the lamination laminate to form occupid state, and under this state thermal weld auxiliary tank 20 and filter chamber 21, it is all very poor with the operability of the operation that forms occupid state and thermal weld then to carry out lamination.In embodiments of the present invention, about this point, in advance in forming the fabric cup of regulation shape nonwoven, prepare to constitute small pieces by laminated nonwoven fabric to form the filtering material 30 of occupid state.In other words, surround repeatedly the small pieces of laminated nonwoven fabric and the periphery of the material that forms with the nonwovens that surrounds usefulness, thereby constitute filtering material 30.For example shown in Figure 3, as this structure, form cup 30a and following glass 30b by the nonwovens of thinner thickness, the small pieces of filling in nonwovens to be forming occupid state, and interim the joint go up cup 30a and following glass 30b, thus formation filtering material 30.In this case, last cup 30a and following glass 30b form along the cup-shaped in the interior week of filter material chamber 22.The filtering material 30 of Gou Chenging like this, filtering material 30 is simple in structure, be filled into easily in the filter chamber 22, and it is good to filter the operation of thermal weld of chamber 21 and auxiliary tank 20.In addition, replacing the small pieces of nonwovens also described foam material can be made small pieces fills.

And, as shown in Figure 3, also can consider such structure: be provided with lip part 30c at last cup 30a, be provided with lip part 30d at a following glass 30b about last cup 30a and following glass 30b, when chamber 21 is filtered in thermal weld, carry out thermal weld across this lip part 30c and lip part 30d.Like this, cup 30a and a following glass 30b constitute filtering material 30 in the utilization, and the number of components that is used to constitute filter chamber 22 tails off, and process and also become easy.

Fuel supplying device 100 according to such formation, under the state that fuel Fa in fuel tank 50 tails off, even tilt as shown in Figure 4, the filtering material 30 in the filter chamber 22 passes through capillarity, keep the state that sucks fuel, and can not flow out to outside the filter chamber 22.Therefore, in existing fuel supplying device, even fuel is flowed out from fuel filter and can not the situation of fueling under, by still effectively utilizing fuel in the device of the present invention.

Although illustrate and described preferred implementation of the present invention, it should be understood that content disclosed by the invention only is the illustrative purpose, in not deviating from the scope that claim of the present invention sets forth, can carry out numerous variations and modification.

Claims

1. fuel supplying device, it has the auxiliary tank (20) that forms with thermoplastic synthetic resin and is fixed on petrolift (10) in this auxiliary tank (20), this fuel supplying device is installed in the fuel tank (50) of vehicle, and the fuel that is used for flowing into above-mentioned auxiliary tank (20) in above-mentioned fuel tank (50) offers motor by above-mentioned petrolift (10), it is characterized in that

Be fixed with filter chamber (22) in the underpart of above-mentioned auxiliary tank (20), be filled with filtering material (30) in this filter chamber (22), and have fuel inflow hole (22a), the suction port (11) of above-mentioned petrolift (10) engages with above-mentioned filter chamber (22).

2. fuel supplying device according to claim 1, it is characterized in that, above-mentioned filter chamber (22) forms by filtering chamber (21) in above-mentioned auxiliary tank (20) downside thermal weld, and above-mentioned filtration chamber (21) is by forming with above-mentioned auxiliary tank (20) identical materials.

3. fuel supplying device according to claim 1 is characterized in that, above-mentioned filtering material (30) is formed by foam unit.

4. fuel supplying device according to claim 1 is characterized in that, above-mentioned filtering material (30) laminated nonwoven fabric forms.

5. according to each the described fuel supplying device in the claim 1 to 4, it is characterized in that above-mentioned filtering material (30) is surrounded by the cup (30a) and following glass (30b) of going up that forms with nonwovens.

6. fuel supplying device according to claim 5, it is characterized in that, cup (30a) and following glass (30b) is respectively arranged with lip part (30c, 30d) on above-mentioned, across this lip part above-mentioned auxiliary tank of (30c, 30d) thermal weld (20) and filter chamber (21).