CN107304739B - Fuel supply system - Google Patents
Fuel supply system Download PDFInfo
- Publication number
- CN107304739B CN107304739B CN201710249912.6A CN201710249912A CN107304739B CN 107304739 B CN107304739 B CN 107304739B CN 201710249912 A CN201710249912 A CN 201710249912A CN 107304739 B CN107304739 B CN 107304739B
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- Prior art keywords
- petrolift
- fuel
- steam
- supply system
- fuel supply
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/20—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines characterised by means for preventing vapour lock
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The present invention provides a kind of fuel supply system for being able to suppress air and foreign matter and entering from steam outlet into petrolift.Fuel supply system (10) is configured in fuel tank (12), and has petrolift (16), which has the vapour injection portion (44) of discharge steam.The fuel supply system (10) has: vapor storage portion (72) store the steam ejected from the vapour injection portion (44) of petrolift (16)；And steam exhaust pipe (80), it will be from the steam that the vapor stream outlet of vapor storage portion (72) flows out to the bottom-boot of fuel tank (12).
Description
Technical field
The present invention relates to the fuel supply systems for supplying the fuel in fuel tank to the engine as internal combustion engine.
Background technique
In the previous example of this fuel supply system, exists and have petrolift, filter and steam delivery pipe
Fuel supply system (see, for example patent document 1).Petrolift is configured in fuel tank, and has the steam discharge of discharge steam
Mouthful.Filter is filtered the fuel of petrolift to be sucked.Steam delivery pipe is used to for steam being discharged from the steam of petrolift
It mouthful is discharged into fuel tank, opening portion is configured at the suction inlet position on the lower than filter.Thus, in engine stop
When, that is, petrolift work stop when, inhibit air enter from steam outlet into petrolift, inhibit by the air entrance
The outflow of fuel in caused petrolift.Thus, the pressure rising time of petrolift when restarting of engine can be shortened.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 10-61517 bulletin
Summary of the invention
Problems to be solved by the invention
In previous example, in the case where filter produces blocking, it is contemplated that: the sucking of petrolift acts on steaming
Gas outlet, so that the fuel flow backwards in steam delivery pipe is inhaled into petrolift.In this case, the fuel institute of refluence
The foreign matter contained is likely to enter in petrolift.The problem to be solved by the present invention is to provide one kind be able to suppress air and
The fuel supply system that foreign matter enters from steam outlet into petrolift.
The solution to the problem
The project can be solved by fuel supply system of the invention.1st invention is a kind of fuel supply system, the combustion
Material feedway is configured in fuel tank, and has petrolift, which has the steam outlet of discharge steam, wherein
The fuel supply system has: vapor storage portion, stores the steam ejected from the steam outlet of the petrolift；And steaming
Gas discharge pipe, will be from the steam that the vapor stream outlet in the vapor storage portion flows out to the bottom-boot of the fuel tank.
According to this structure, ejected from the steam outlet of petrolift it is vapor fueled be stored to vapor storage portion after, arranged via steam
Bottom-boot of the outlet pipe to fuel tank.Therefore, even if the fuel in fuel tank tails off, it also can inhibit the opening portion of steam exhaust pipe
It is exposed on liquid level.Thus, in engine stop, that is, work of petrolift is when stopping, inhibiting air from steam outlet to combustion
Enter in material pump, inhibits the outflow into the fuel in caused petrolift by the air.Thus, it is possible to shorten engine
The pressure rising time of petrolift when restarting.In addition, the fuel filter in the fuel suction port for being connected to petrolift produces
In the case where blocking, by making the sucking of petrolift act on steam outlet, the combustion flow backwards in steam exhaust pipe
Material is sucked from steam outlet into petrolift via vapor storage portion.Therefore, the flowing of fuel changes in vapor storage portion
Become, so as to inhibit the foreign matter contained by the fuel flow backwards to enter into petrolift.
2nd invention is according to the fuel supply system of the 1st invention, wherein the steam outlet of the petrolift and the steaming
The vapor stream outlet of gas reservoir configures in such a way that respective axis is parallel to each other.According to this structure, with such as petrolift
Steam outlet is compared with the situation that the vapor stream outlet in vapor storage portion is configured on same axis, the steaming from vapor storage portion
Air stream outlet is complicated to the refluence path of the steam outlet of petrolift.Inhibit the slave vapor storage portion of foreign matter as a result,
Steam outlet from vapor stream outlet to petrolift refluence.Therefore, foreign matter can be further suppressed to enter into petrolift.
3rd invention is according to the fuel supply system of the 2nd invention, wherein the steam outlet of the petrolift is configured at ratio
The vapor stream outlet in the vapor storage portion leans on the position of top side.According to this structure, inhibit the steaming in the slave vapor storage portion of foreign matter
Steam outlet from air stream outlet to petrolift refluence.Therefore, foreign matter can be further suppressed to enter into petrolift.
4th invention according to any one of 1st~3 invention fuel supply system, wherein vapor storage portion packet
It includes: the petrolift；The container member of cup-shaped, it is chimeric with the petrolift；Cushion member, to the petrolift with it is described
It is sealed between container member.According to this structure, with steam exhaust pipe is connected to petrolift steam outlet the case where
(referring to patent document 1) different, it can be improved the freedom degree of the configuration of steam exhaust pipe.In addition, vapor storage portion be formed in
On the identical axis of petrolift, therefore, it is able to suppress the deterioration of the mountability of petrolift.
5th invention is according to the fuel supply system of the 4th invention, wherein described in the compression degree of the cushion member compares
The compression degree for the containment member being sealed between the fuel ejiction opening of petrolift and the component of The lid component side is low.According to the knot
Structure is able to suppress the bias contracting of containment member, inhibits poor sealing.In addition, cushion member makes to press by the change of cross sectional shape
Shrinkage reduces or reduces rubber hardness by the change of the rubber material of cushion member, so as to be set as compression degree ratio
The compression degree of containment member is low.
6th invention is according to the fuel supply systems of the 4th or 5 inventions, wherein the steam exhaust pipe and is formed in the appearance
The vapor stream outlet of device component is chimeric, and carries out anticreep using the constituent parts of fuel feed system.According to this structure, can
Be fitted to using the constituent parts of fuel feed system the anti-of the steam exhaust pipe of the vapor stream outlet of container member
It is de-.Therefore, mounting structure of the steam exhaust pipe relative to container member can be simplified.
Detailed description of the invention
Fig. 1 is the perspective view for indicating the fuel supply system of embodiment 1.
Fig. 2 is the main view for indicating fuel supply system.
Fig. 3 is the top view for indicating fuel supply system.
Fig. 4 is the side view for supplying it to device local cutting to indicate.
Fig. 5 is the perspective view for supplying it to device and decomposing to indicate.
Fig. 6 is the main view for indicating the relationship between shell and steam exhaust pipe.
Fig. 7 is the VII-VII line regarding sectional view of Fig. 6.
Fig. 8 is the VIII-VIII line regarding sectional view of Fig. 6.
Fig. 9 is the cross-sectional view for indicating the seal construction in vapor storage portion.
Figure 10 is the top view for indicating the anti-loose structure of steam exhaust pipe.
Figure 11 is the cross-sectional view for indicating the seal construction in vapor storage portion of embodiment 2.
Figure 12 is the cross-sectional view for indicating the seal construction in vapor storage portion of embodiment 3.
Figure 13 is the cross-sectional view for indicating the seal construction in vapor storage portion of embodiment 4.
Figure 14 is the cross-sectional view for indicating the seal construction in vapor storage portion of embodiment 5.
Description of symbols
10, fuel supply system；12, fuel tank；13, opening portion；14, plate (The lid component) is used in installation；16, petrolift；18,
Pump case (container member)；20, fuel filter (constituent parts of fuel feed system)；33, fitting portion (The lid component side is pumped
Component)；44, vapour injection portion (steam outlet)；48,1O shape sealing ring (containment member)；68,2O shape sealing ring
(cushion member)；72, vapor storage portion；74, vapor stream outlet；80, steam exhaust pipe；90, T shape liner (cushion member)；92,
X-shaped pads (cushion member)；96,2O shape sealing ring (cushion member)；98,2O shape sealing ring (cushion member).
Specific embodiment
Hereinafter, being illustrated using attached drawing to form for carrying out the present invention.
[embodiment 1] in the present embodiment, to by the fuel in the fuel tank in vehicle (for example, two-wheeled)
The fuel supply system supplied to engine is illustrated.Fig. 1 is the perspective view for indicating fuel supply system, and Fig. 2 is the fuel
The main view of feedway, Fig. 3 are the top views of the fuel supply system, and Fig. 4 is to carry out the fuel supply system local cutting
The side view of expression, Fig. 5 are the perspective views for decomposing the fuel supply system to indicate.In addition, will be fired for the convenience of explanation
Expect the orientation of feedway as determined as shown in arrow in each figure.In this case, the fuel tank of up and down direction and vehicle
The so-called world direction of gravity direction it is corresponding.
It is illustrated from the summary of fuel supply system.As shown in figure 4, fuel supply system 10 is set to fuel tank
12.Fuel tank 12 is the container of for example metal hollow shape, has base plate 12a.It is formed in base plate 12a by round hole
The opening portion 13 of composition.In fuel, the liquid fuel such as gasoline that fuel tank 12 can store engine.In addition, in Fig. 4
The bottom of fuel tank 12 is only shown.
Fuel supply system 10 is mounted to the device with bottom type of the bottom of fuel tank 12.Fuel supply system 10 is
Petrolift 16, pump case 18, fuel filter 20 and pressure regulator 22 etc. are modular relative to installation plate 14
's.
As shown in figure 5, installation plate 14 is resin system, has the ceiling plate portion 24 of circular plate.Ceiling plate portion 24 have than
The big outer diameter of the bore of the opening portion 13 (referring to Fig. 4) of fuel tank 12.Protruding in the upper surface of ceiling plate portion 24 can be with opening
The chimeric substantially cylindric fitting cylinder section 25 in portion 13.As shown in figure 4, installation plate 14 is so that fitting cylinder section 25 and opening portion 13
Base plate 12a chimeric and that opening portion 13 is installed on to fuel tank 12 by ceiling plate portion 24 in the way of closed.In addition, plate is used in installation
14 quite in this manual so-called " The lid component ".
As shown in figure 5, being provided with fuel bleed pipe 27, fuel passage forming portion 29 and electric connector 31 in ceiling plate portion 24
Deng.Fuel bleed pipe 27 is formed as L word tubulose in the lower surface of ceiling plate portion 24 (referring to Fig. 2).Fuel bleed pipe 27 is formed to
Enough connect the fuel supplying tubing (not shown) being connected with the injector of engine.Fuel passage forming portion 29 is formed as from cover board
The hollow cylindrical that the upper surface of the fitting cylinder section 25 in portion 24 erects upward.Pipeline and combustion in fuel passage forming portion 29
Expect the pipeline connection in bleed pipe 27.One is formed by the pipeline in the pipeline and fuel bleed pipe 27 in fuel passage forming portion 29
The fuel passage (mark appended drawing reference 30) (referring to Fig. 4) of series.
As shown in figure 4, the front side portion (being right side in Fig. 4) in fuel passage forming portion 29 is formed with pump fitting portion
33.Pump fitting portion 33 be formed to have the circular plate shape of front side portion for being formed in fuel passage forming portion 29 bottom wall part 34 and from
The lateral cylinder cup-shaped of the peripheral wall portion 35 for the hollow cylindrical that bottom wall part 34 extends towards front.Edge is formed in bottom wall part 34
The poroid communication port 36 of circle of front-rear direction opening.In addition, electric connector 31 is formed as the downside energy in installation plate 14
The aerial lug (not shown) that enough connections and power supply, control device (ECU) etc. are connected.
As shown in figure 5, the state of the DYN dynamic motor part of petrolift 16 and the pumping section of vane type axially to arrange
It is integrally packed into cylindric pump case 38.Motor part is made of brushless motor.Pumping section is by utilizing motor part driving impeller
Friction-type pump is constituted.Petrolift 16 is so that pumping section makes state, so-called horizontal state of the motor part towards rear towards front, also
Configuration.Petrolift 16 is the electrodynamic pump of formula in case.
Pump case 38 includes: the housing cylinder 39 of hollow cylindrical；Disk-shaped pump cover 40, closing housing cylinder 39
The open end of side (pumping section side)；Disk-shaped motor cover 41 closes the other side (motor part side) of housing cylinder 39
Open end.For example, housing cylinder 39 be it is metal, pump cover 40 and motor cover 41 are resin systems.
The cylindric fuel suction port 43 for making to be connected to inside and outside pumping section is formed in pump cover 40.Fuel suction port 43 is in pump cover
40 outer end face is formed as standing shape.In addition, being formed with the steam (containing fuel) by midway of boosting out of pumping section in pump cover 40
The vapour injection portion 44 of the small pore-like of discharge.The central axis of fuel suction port 43 and vapour injection portion 44 relative to pump cover 40
Prejudicially configure.For example, when fuel suction port 43 is located at left end side, vapour injection portion 44 is located in the main view of pump cover 40
Upper end side (referring to Fig. 6).Fig. 6 is the main view for indicating the relationship between shell and steam exhaust pipe.In addition, vapour injection portion 44
It is equivalent to so-called in the present specification " steam outlet ".
As shown in figure 5, being formed with the cylindric fuel ejiction opening 46 for making to be connected to inside and outside motor part in motor cover 41.Fuel
Ejiction opening 46 is formed as standing shape in the outer end face of motor cover 41.As shown in figure 4, the part of 41 side of motor cover of petrolift 16 is inserted
Enter in the pump fitting portion 33 of installation plate 14.Motor cover 41 fuel ejiction opening 46 insertion pump fitting portion 33 communication port 36 and with
The communication port 36 of pump fitting portion 33 connects.Motor cover 41 is abutted or is approached with the bottom wall part 34 of pump fitting portion 33.To even
The O-ring seals 48 flexibly sealed between port 36 and fuel ejiction opening 46 fall between.In addition, O shape seals
Circle 48 is equivalent to so-called in the present specification " containment member ".
The electric connector 31 of the lead 49 and installation plate 14 that are electrically connected with petrolift 16 is connect (referring to Fig. 3).Petrolift
16 make in pumping section under the driving of motor part from fuel suction port 43 suck fuel boosting after, via in motor part from combustion
Expect that ejiction opening 46 sprays.
As shown in figure 5, pump case 18 is resin system, be formed as cylinder cup-shaped.Pump case 18 has hollow cylindrical
The disk-shaped end wall 51 of the open end of the side in barrel portion 50 and closing barrel portion 50.Being formed in end wall 51 makes to hold
The inside and outside cylindric connector 52 being connected to of wall portion 51.The inner and outer ends of connector 52 from end wall 51 are prominent towards opposite direction
Out.As shown in figure 4, in connector 52, from the overhang ratio of the inner surface side of end wall 51 rearward (being left in Fig. 4)
It is small from the overhang of the outer surface side of end wall 51 (being right in Fig. 4) forwards.
In the partial insertion pump case 18 of 40 side of pump cover of petrolift 16.Rear end (the In in the barrel portion 50 of pump case 18
It is left part in Fig. 4) utilize the snap-fitted front end (being right part in Fig. 4) with the pump fitting portion 33 of installation plate 14
Link up (referring to Fig.1 and Fig. 3).The fuel suction port 43 of pump cover 40 is almost without the connection for being inserted into pump case 18 with gap
Mouthfuls 52 and connected with the connector of pump case 18 52.As shown in fig. 6, connector 52 is configured at end wall 51 in main view
Left end side.The fuel suction port 43 of pump cover 40 is configured at left end side as a result, in addition, vapour injection portion 44 is configured at upper end side.
As shown in figure 4, petrolift 16 is to accommodate to being surrounded by installing the pump fitting portion 33 and pump case 18 with plate 14
The state of spatial portion is kept.Pump cover 40 is abutted or is approached with connector 52.In addition, by 33 He of pump fitting portion of installation plate 14
Pump case 18 constitutes the pump receiving component 53 of receiving petrolift 16.In addition, pump case 18 be equivalent to it is so-called in the present specification
" container member ".In addition, pump fitting portion 33 is equivalent to so-called in the present specification " component of The lid component side ".
It is formed between the end wall 51 of pump case 18 and the pump cover 40 of pump case 38 and surrounds the cricoid of connector 52
Spatial portion 54a.Spatial portion 54a is connected to the vapour injection portion 44 of petrolift 16.In addition, barrel portion 50 and pump in pump case 18
Small gap is set with along radial direction between the housing cylinder 39 of shell 38.As a result, in barrel portion 50 and housing cylinder
The spatial portion 54b of the tubular formed by gap between the two is formed between 39.The space of cricoid spatial portion 54a and tubular
Portion 54b is interconnected.
As shown in figure 5, fuel filter 20 has filter member 55 and installation component 56.Filter member 55 is by having
Pass through fuel but the filtering material of the sheets such as the non-woven fabrics of function of the foreign matter removal in fuel is formed as into flat bag
Shape.Filter member 55 configures (referring to Fig.1~Fig. 3) with the state of flat direction (thickness direction) towards left and right directions.In addition,
Although not shown, but in filter member 55 it contains for filter member 55 to be remained the state of expanding (state of expansion)
Resin in-seam frame member.
Installation component 56 is resin system, is formed to have the L word tubulose of the 1st pipe portion 57 and the 2nd pipe portion 58.1st pipe portion
57 open end is to be connected in the central portion of the one side of filter member 55 (left side) and filter member 55
Mode is incorporated into in-seam frame member using welding etc..
As shown in figure 4, the open end of the 2nd pipe portion 58 is directed toward rear.In the 2nd pipe portion 58 on two sides are formed with up and down
Under installation sheet 60 (referring to Fig. 5) in a pair.Two installation sheets 60 utilize its elastic front end with the end wall 51 in pump case 18
Face elastic locking piece 62 up and down in a pair outstanding engages.I.e., the installation component 56 of fuel filter 20 utilizes snap-fitted
It is installed on pump case 18 (referring to Fig.1~Fig. 3).The connector 52 of pump case 18 be inserted into the 2nd pipe portion 58 of installation component 56 and with
2nd pipe portion 58 connects.
Pressure regulator 22 has columned appearance.Pressure regulator 22 is chimeric and is configured at the fuel of installation plate 14
In the upper end of passage forming portion 29.Next, being equipped with anticreep component 64 in fuel passage forming portion 29 using snap-fitted
(referring to Fig.1 and Fig. 3).Pressure regulator 22 carries out anticreep using anticreep component 64 with the state having good positioning.Pressure regulator
The pressure of the fuel of 22 pairs of fuel passages 30 is adjusted, and by residual fuel from residual fuel ejiction opening (not shown) to outside
It sprays in fuel tank 12 and is discharged.In addition, flexibly close to being carried out between fuel passage forming portion 29 and pressure regulator 22
The O-ring seals 65 of envelope fall between.
In the case where fuel supply system 10 is installed to the state (referring to Fig. 4) of fuel tank 12, the fuel being connected with engine is supplied
The fuel bleed pipe 27 of installation plate 14 is connected to piping.In addition, electric connector 31 is connect with aerial lug (not shown).
Then, illustrate the work of fuel supply system 10.Petrolift 16 is driven by external power supply.As a result, in fuel tank 12
Fuel filtered by fuel filter 20 and after becoming clean fuel, via the connector 52 of pump case 18 from petrolift 16
Fuel suction port 43 to pumping section suck.Fuel is after the pumping section of petrolift 16 is boosted, from fuel ejiction opening 46 to installation
With being sprayed in the fuel passage 30 of plate 14.The fuel being ejected into fuel passage 30 is matched from fuel bleed pipe 27 via fuel supply
(not shown) is managed to supply to engine.The pressure of fuel in fuel passage 30 is that the pressure of the fuel supplied to engine is pressed
Draught control mechanism 22 is adjusted to scheduled pressure.
Then, construction is discharged to the steam for being set to fuel supply system 10 to be illustrated.As shown in figure 4, steam is discharged
Be configured to will to eject from the vapour injection portion 44 of petrolift 16 vapor storage that gushes out in vapor storage portion 72 (after
State) after towards guiding near the bottom of fuel tank 12 i.e. base plate 12a.
As previously mentioned, being formed between the pump case 38 and pump case 18 of the petrolift 16 of fuel supply system 10 mutually
The cricoid spatial portion 54a of the connection and spatial portion 54b of tubular.Therefore, opening the spatial portion 54b of tubular as follows
Mouth end (rear end) seals and forms the vapor storage chamber of the spatial portion as sealed shape with two spatial portion 54a, 54b
54.Fig. 7 is the VII-VII line regarding sectional view of Fig. 6, and Fig. 8 is the VIII-VIII line regarding sectional view of Fig. 6, and Fig. 9 is to indicate to steam
The cross-sectional view of the seal construction of gas reservoir.
As shown in figure 9, the inner peripheral portion in the open end in the barrel portion 50 of pump case 18 is formed with and makes internal diameter widened
Rank slot 66.The O-ring seals 68 having as O shape liner are fitted into step groove 66 (referring to Fig. 4).O-ring seals 68 are to barrel
It is flexibly sealed between portion 50 and the housing cylinder 39 of pump case 38.In addition, O-ring seals 68 are equivalent in this specification
In so-called " cushion member ".In addition, O-ring seals 68 are known as " 2O shape sealing ring 68 ", by front for illustrating conveniently
The O-ring seals 48 of appearance are known as " 1O shape sealing ring 48 ".
(the ginseng of locating snap ring 70 of resin is continuously installed using indentation with 2O shape sealing ring 68 in step groove 66
According to Fig. 4).Locating snap ring 70 carries out anticreep to 2O shape sealing ring 68.In addition, locating snap ring 70 is also chimeric using the pump of installation plate 14
The front end face (top end face) in portion 33 carries out anticreep.
By utilizing the seal construction based on 2O shape sealing ring 68 to the pump case 38 and pump case of petrolift 16
The open end of the spatial portion 54b of tubular between 18 is sealed, and is formed with the vapor storage chamber 54 of sealed shape (referring to figure
4).In addition, being constituted by the pump case 38 of petrolift 16, pump case 18 and 2O shape sealing ring 68 and being formed vapor storage chamber 54
Vapor storage portion 72.
As shown in fig. 7, the end wall 51 in pump case 18 is formed with the cylindric steam for making to be connected to inside and outside end wall 51
Outflux 74.The inner and outer ends of vapor stream outlet 74 from end wall 51 are prominent towards opposite direction.For vapor stream outlet 74, from
The inner surface side of end wall 51 rearward (in fig. 7, it is left) overhang forwards than the outer surface side from end wall 51
The overhang of (in fig. 7, it is right) is small.In addition, the inner surface side of the slave end wall 51 of vapor stream outlet 74 rearward prominent
Output is more slightly smaller than the overhang of the outer surface side of the slave end wall 51 of connector 52 forwards (referring to Fig. 8).
As shown in fig. 6, vapor stream outlet 74 is configured at the side opposite with connector 52 of end wall 51 in main view i.e.
Right end side.Vapor stream outlet 74 is configured at the position that ground side is leaned on than the vapour injection portion 44 of petrolift 16.In other words, vapour injection
Portion 44 is configured at the position that top side is leaned on than vapor stream outlet 74.
Vapour injection portion 44 and vapor stream outlet 74 configure in such a way that respective axis is parallel to each other.In other words, steam
The axis (not shown) of ejection section 44 and the axis 74L (referring to Fig. 7 and Fig. 8) of vapor stream outlet 74, which are configured at, to offset one from another
Position.
As shown in fig. 6, the outer end face (front end face) in end wall 51 protrudes top and steam in vapor stream outlet 74
The adjacent rotation prevention portion 76 (referring to Fig.1) of outflux 74.Rotation prevention portion 76 is formed as inverted U-shaped in main view.In addition, in end wall 51
Outer end face (front end face) protrude and stop the two of the lower section of vapor stream outlet 74 pair of right and left adjacent with vapor stream outlet 74
Turn protrusion 78 (referring to Fig. 5).Two rotation stop protrusions 78 are formed as in the quadrangle plate being parallel to each other.
Next, to for the base plate by the steam of the vapor storage chamber 54 in vapor storage portion 72 towards fuel tank 12
The steam exhaust pipe 80 guided near 12a is illustrated.As shown in figure 5, steam exhaust pipe 80 is resin system, it is in round tube
The upper end of the pipe main body 81 of shape is formed in bent angle shape made of cylindric installing port 82.It is formed in the upper end of installing port 82
There is flat engaging protrusion 84.The interior angle side formed by pipe main body 81 and installing port 82 is formed with the flat card across the two
Close piece 86.As shown in fig. 7, engaging protrusion 84 and snap-latch piece 86 are configured at axis 81L and installing port 82 including pipe main body 81
Axis 82L a plane on.In addition, the axis 81L of pipe main body 81 and the axis 82L of installing port 82 are in such as 120 °.In addition,
The axis 82L of installing port 82 and the axis 74L of vapor stream outlet 74 are located on same axis.
As shown in fig. 7, the installing port 82 of steam exhaust pipe 80 is connected to the vapor stream outlet 74 of pump case 18 using indentation
(referring to Fig. 8).Engaging protrusion 84 engages with the groove portion 76a of rotation prevention portion 76, also, snap-latch piece 86 be sticked in two rotation stop protrusions 78 it
Between (referring to Fig. 6).Steam exhaust pipe 80 is by relative to 18 rotation stop of pump case as a result,.
As shown in fig. 7, in side view, pipe main body 81 is configured in a manner of downward and diagonally forward inclined.In addition, such as
Shown in Fig. 6, in main view, pipe main body 81 is configured in a manner of being slightly tilted downward and to the right.In addition, pipe main body 81
The outlet 88 of lower end opening portion, that is, steam exhaust pipe 80 is configured at the lower edge 55a with the filter member 55 of fuel filter 20
The roughly the same height of height (referring to Fig. 4).
Steam exhaust pipe 80 is installed on pump case 18 before installing fuel filter 20 relative to pump case 18.I.e., In
Steam exhaust pipe 80 is installed to after pump case 18 (referring to Fig. 8), fuel filter 20 is installed on pump case 18 (referring to figure
1~Fig. 3 and Figure 10).The 1st pipe portion 57 of the installation component 56 of fuel filter 20 is configured at and steam exhaust pipe 80 as a result,
Installing port 82 the close position front side (in Figure 10, be right side).Even if steam exhaust pipe 80 is from pump case 18 as a result,
Vapor stream outlet 74 deviates slightly towards direction is extracted, and installing port 82 is also abutted with the 1st pipe portion 57 of installation component 56 (in Figure 10
In, referring to double dot dash line 82).It is therefore prevented that steam exhaust pipe 80 further deviates or falls off to extraction direction.In addition, for
Installation component 56, installation component 56 are installed on pump case 18 using snap-fitted, it is therefore prevented that installation component 56 and steam are discharged
Pipe 80 falls off together.In addition, fuel filter 20 is equivalent to the " composition of fuel feed system zero so-called in the present specification
Part ".
According to the fuel supply system 10, then ejected from the vapour injection portion 44 of petrolift 16 vapor fueled
Bottom-boot after the vapor storage chamber 54 for being stored in vapor storage portion 72 via from steam exhaust pipe 80 to fuel tank 12.Cause
This also inhibits the opening portion 13 of steam exhaust pipe 80 to be exposed on liquid level even if the fuel in fuel tank 12 tails off.Thus, In
When engine stop, that is, work of petrolift 16 is when stopping, inhibiting air to enter from vapour injection portion 44 into petrolift 16, presses down
Make the outflow into the fuel in caused petrolift 16 by the air.Thus, it is possible to shorten when restarting of engine
The pressure rising time of petrolift 16.
In addition, in the case where being connected to the fuel filter 20 of fuel suction port 43 of petrolift 16 and producing blocking,
By making the sucking of petrolift 16 act on vapour injection portion 44, the fuel flow backwards in steam exhaust pipe 80 is via steaming
The vapor storage chamber 54 of gas reservoir 72 is sucked from vapour injection portion 44 into petrolift 16.Therefore, by vapor storage portion
Change the flowing of fuel in 72 vapor storage chamber 54, is able to suppress the foreign matter contained by the fuel of refluence into petrolift 16
Into.
In addition, the vapour injection portion 44 of petrolift 16 and the vapor stream outlet 74 in vapor storage portion 72 are with respective axis phase
Mutually parallel mode configures.Thus, for example, with the vapour injection portion 44 of petrolift 16 and the vapor stream outlet in vapor storage portion 72
74 situations about being configured on same axis are compared, the vapour injection from the vapor stream outlet 74 in vapor storage portion 72 to petrolift 16
The refluence path in portion 44 is complicated.Inhibit foreign matter from the vapor stream outlet 74 in vapor storage portion 72 to petrolift 16 as a result,
It flows backwards in vapour injection portion 44.Therefore, foreign matter can be further suppressed to enter into petrolift 16.
In addition, the vapour injection portion 44 of petrolift 16 is configured at the vapor stream outlet 74 than vapor storage portion 72 by top side
Position.Thus, inhibit foreign matter to flow backwards from the vapor stream outlet 74 in vapor storage portion 72 to the vapour injection portion 44 of petrolift 16.Cause
This, can further suppress foreign matter and enter into petrolift 16.
In addition, vapor storage portion 72 is by petrolift 16, the pump case 18 of the cup-shaped chimeric with petrolift 16 and to fuel
The 2O shape sealing ring 68 being sealed between pump 16 and pump case 18 is constituted.Thus, combustion is connected to by vapour injection portion 44
The case where vapour injection portion 44 of material pump 16, is (referring to patent document 1) different, can be improved the configuration of steam exhaust pipe 80 oneself
By spending.In addition, vapor storage portion 72 is formed on coaxial with petrolift 16, therefore, it is able to suppress the mountability of petrolift 16
Deteriorate.
In addition, comparing combustion to the compression degree for the 2O shape sealing ring 68 being sealed between petrolift 16 and pump case 18
The pressure for the 1O shape sealing ring 48 being sealed between the fuel ejiction opening 46 of material pump 16 and the pump fitting portion 33 of installation plate 14
Contracting degree is low.For example, 2O shape sealing ring 68 reduces rubber hardness by the change of rubber material, to be set as compression journey
The compression degree of Du Bi 1O shape sealing ring 48 is low.Thus, it is possible to which the bias of 1O shape sealing ring 48 is inhibited to contract, inhibit sealing not
It is good.
Specifically, petrolift 16 is supported on pump receiving component 53 in double base shape.I.e., fuel ejiction opening 46 is via 1O
Shape sealing ring 48 is supported on the communication port 36 of the pump fitting portion 33 of installation plate 14, also, fuel suction port 43 is supported on and is connected
Tie the connector 52 of the pump case 18 of installation plate 14.Therefore, for example to being carried out between petrolift 16 and pump case 18 it is close
The 2O shape sealing ring 68 of envelope becomes 3 dot points using in the case where material identical with the material of 1O shape sealing ring 48, because
This, compared to 2O shape sealing ring 68, the 1O shape sealing ring 48 of path side generates bias contracting, it is possible to produce poor sealing.
Therefore, the O-ring seals lower than the compression degree of 1O shape sealing ring 48 using compression degree of 2O shape sealing ring 68, can press down
The bias contracting for making 1O shape sealing ring 48, inhibits poor sealing.
In addition, the installing port 82 of steam exhaust pipe 80 is embedded in the vapor stream outlet 74 formed in pump case 18, and utilize
The installation component 56 of fuel filter 20 carries out anticreep.Thus, it is possible to be embedded in pump to installing port 82 using fuel filter 20
The steam exhaust pipe 80 of the vapor stream outlet 74 of shell 18 carries out anticreep.Therefore, steam exhaust pipe 80 can be simplified relative to pump
The mounting structure of shell 18.
[embodiment 2] present embodiment is to apply change to the seal construction in the vapor storage portion 72 in embodiment 1
Made of, therefore, illustrate that it changes part, the repetitive description thereof will be omitted.Figure 11 is to indicate that the seal construction in vapor storage portion cuts open
View.As shown in figure 11, present embodiment is that the 2O shape sealing ring 68 in embodiment 1 is altered to section shape in T shape
T shape liner 90 made of.In this way, T shape liner 90 reduces compression ratio by the change of cross sectional shape, it is set as its compression degree
Compression degree than 1O shape sealing ring 48 is low.In addition, T shape liner 90 is quite in this manual so-called " cushion member ".
[embodiment 3] present embodiment is to apply change to the seal construction in the vapor storage portion 72 in embodiment 1
Made of, therefore, illustrate that it changes part, the repetitive description thereof will be omitted.Figure 12 is to indicate that the seal construction in vapor storage portion cuts open
View.As shown in figure 12, present embodiment is that the 2O shape sealing ring 68 in embodiment 1 is altered to section in X word shape
X-shaped liner 92 made of.In this way, X-shaped liner 92 reduces compression ratio by the change of cross sectional shape, it is set as its compression degree
Compression degree than 1O shape sealing ring 48 is low.In addition, X-shaped liner 92 is quite in this manual so-called " cushion member ".
[embodiment 4] present embodiment is to apply change to the seal construction in the vapor storage portion 72 in embodiment 1
Made of, therefore, illustrate that it changes part, the repetitive description thereof will be omitted.Figure 13 is to indicate that the seal construction in vapor storage portion cuts open
View.As shown in figure 13, present embodiment is formed with endless groove 94 in the outer peripheral surface of the housing cylinder 39 of petrolift 16.In ring-type
Slot 94 is configured with to the 2O being flexibly sealed between the barrel portion 50 of pump case 18 and the housing cylinder 39 of pump case 38
Shape sealing ring (mark appended drawing reference 96).In addition, 2O shape sealing ring 96 is equivalent to " liner structure so-called in the present specification
Part ".
[embodiment 5] present embodiment is to apply change to the seal construction in the vapor storage portion 72 in embodiment 1
Made of, therefore, illustrate that it changes part, the repetitive description thereof will be omitted.Figure 14 is to indicate that the seal construction in vapor storage portion cuts open
View.As shown in figure 14, present embodiment is that the inner end (end of 51 side of end wall) in pump case 18 is configured with opposite end
The side for the 2O shape sealing ring (mark appended drawing reference 98) being flexibly sealed between wall portion 51 and the pump cover 40 of pump case 38
Formula.The cricoid wall portion 99 being embedded in 2O shape sealing ring 98 is formed in the inner face of end wall 51.In this case, may be used
The spatial portion 54b of tubular is omitted from the vapor storage chamber 54 in vapor storage portion 72 (referring to Fig. 7).In addition, 2O shape sealing ring 98
It is equivalent to so-called in the present specification " cushion member ".
[other embodiments] are able to carry out the model for not departing from purport of the invention the present invention is not limited to embodiment
Enclose interior change.For example, can also be suitable for the fuel supply system of ship, industrial machine etc. the present invention is not limited to vehicle.
In addition, the present invention be readily applicable to for installation plate 14 to be installed on the upper surface part of fuel tank 12 on set the fuel of type and supply
To device.In addition, the fuel flowmeter sensor detected to fuel quantity, that is, residual in fuel tank 12 can also be with pump case 18
Modularization.In addition, in embodiments, the vapor stream outlet 74 in vapor storage portion 72 is configured at the steam relative to petrolift 16
44 eccentric position of ejection section, but can also be configured on same axis, it can also be configured with twisted positional relationship.In addition,
Steam exhaust pipe 80 both can be integrated with pump case 18, can also be integrally formed.
Claims (8)
1. a kind of fuel supply system, which is configured in fuel tank, and has petrolift, which has
The steam outlet of steam is discharged, wherein
The fuel supply system has:
Vapor storage portion stores the steam ejected from the steam outlet of the petrolift；And
Steam exhaust pipe, will be from the steam that the vapor stream outlet in the vapor storage portion flows out to the bottom of the fuel tank
Guidance.
2. fuel supply system according to claim 1, wherein
The steam outlet of the petrolift and the vapor stream outlet in the vapor storage portion are discharged with the steam of the petrolift
The mode that the axis of the vapor stream outlet of the axis and vapor storage portion of mouth is parallel to each other configures.
3. fuel supply system according to claim 2, wherein
The steam outlet of the petrolift is configured at the position that top side is leaned on than the vapor stream outlet in the vapor storage portion.
4. fuel supply system described in any one of claim 1 to 3, wherein
The vapor storage portion includes: the petrolift；The container member of cup-shaped, it is chimeric with the petrolift；Cushion member,
It is sealed between the petrolift and the container member.
5. fuel supply system according to claim 4, wherein
The compression degree of the cushion member compares to carry out between the fuel ejiction opening of the petrolift and the component of The lid component side
The compression degree of the containment member of sealing is low.
6. fuel supply system according to claim 4, wherein
The steam exhaust pipe is chimeric with the vapor stream outlet for being formed in the container member, and utilizes the structure of fuel feed system
Anticreep is carried out at components.
7. fuel supply system according to claim 5, wherein
The steam exhaust pipe is chimeric with the vapor stream outlet for being formed in the container member, and utilizes the structure of fuel feed system
Anticreep is carried out at components.
8. fuel supply system according to claim 1, wherein
Steam is discharged in the steam outlet out of pumping section.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-084411 | 2016-04-20 | ||
| JP2016084411A JP6608328B2 (en) | 2016-04-20 | 2016-04-20 | Fuel supply device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107304739A CN107304739A (en) | 2017-10-31 |
| CN107304739B true CN107304739B (en) | 2019-11-05 |
Family
ID=60150558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710249912.6A Active CN107304739B (en) | 2016-04-20 | 2017-04-17 | Fuel supply system |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6608328B2 (en) |
| CN (1) | CN107304739B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7266461B2 (en) * | 2019-05-20 | 2023-04-28 | 愛三工業株式会社 | fuel supply |
| JP2021071080A (en) * | 2019-10-30 | 2021-05-06 | 愛三工業株式会社 | Fuel supply device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1061517A (en) * | 1996-08-19 | 1998-03-03 | Nissan Motor Co Ltd | In-tank type fuel pump |
| CN101294529A (en) * | 2007-04-27 | 2008-10-29 | 爱三工业株式会社 | Fuel pump and fuel pump apparatus |
| CN103347787A (en) * | 2010-10-21 | 2013-10-09 | 特拉华资本形成公司 | Fuel dispensing nozzle |
| CN104081036A (en) * | 2012-02-02 | 2014-10-01 | 丰田自动车株式会社 | Fuel supply device |
| CN104204495A (en) * | 2012-03-22 | 2014-12-10 | 株式会社京浜 | Fuel supply device |
| JP2014231755A (en) * | 2013-05-28 | 2014-12-11 | 株式会社ミクニ | Fuel supply device |
| CN105190013A (en) * | 2013-03-26 | 2015-12-23 | 株式会社美姿把 | Fuel supply device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11193761A (en) * | 1997-12-29 | 1999-07-21 | Keihin Corp | Fuel pump unit |
| JP5335648B2 (en) * | 2009-03-06 | 2013-11-06 | 愛三工業株式会社 | Fuel supply device |
-
2016
- 2016-04-20 JP JP2016084411A patent/JP6608328B2/en active Active
-
2017
- 2017-04-17 CN CN201710249912.6A patent/CN107304739B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1061517A (en) * | 1996-08-19 | 1998-03-03 | Nissan Motor Co Ltd | In-tank type fuel pump |
| CN101294529A (en) * | 2007-04-27 | 2008-10-29 | 爱三工业株式会社 | Fuel pump and fuel pump apparatus |
| CN103347787A (en) * | 2010-10-21 | 2013-10-09 | 特拉华资本形成公司 | Fuel dispensing nozzle |
| CN104081036A (en) * | 2012-02-02 | 2014-10-01 | 丰田自动车株式会社 | Fuel supply device |
| CN104204495A (en) * | 2012-03-22 | 2014-12-10 | 株式会社京浜 | Fuel supply device |
| CN105190013A (en) * | 2013-03-26 | 2015-12-23 | 株式会社美姿把 | Fuel supply device |
| JP2014231755A (en) * | 2013-05-28 | 2014-12-11 | 株式会社ミクニ | Fuel supply device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017194007A (en) | 2017-10-26 |
| CN107304739A (en) | 2017-10-31 |
| JP6608328B2 (en) | 2019-11-20 |
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