CN107304739A - Fuel supply system - Google Patents
Fuel supply system Download PDFInfo
- Publication number
- CN107304739A CN107304739A CN201710249912.6A CN201710249912A CN107304739A CN 107304739 A CN107304739 A CN 107304739A CN 201710249912 A CN201710249912 A CN 201710249912A CN 107304739 A CN107304739 A CN 107304739A
- Authority
- CN
- China
- Prior art keywords
- petrolift
- fuel
- steam
- supply system
- fuel supply
- 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.)
- Granted
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Classifications
-
- 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
Abstract
Present invention offer is a kind of can to suppress the fuel supply system that air and foreign matter enter from steam outlet into petrolift.Fuel supply system (10) is configured in fuel tank (12), and possesses petrolift (16), and the petrolift (16) has the vapour injection portion (44) of discharge steam.The fuel supply system (10) possesses：Vapor storage portion (72), it stores the steam ejected from the vapour injection portion (44) of petrolift (16)；And steam exhaust pipe (80), bottom-boot of its steam for flowing out the vapor stream outlet from vapor storage portion (72) to fuel tank (12).
Description
Technical field
The present invention relates to the fuel supply system for supplying the fuel in fuel tank to the engine as internal combustion engine.
Background technology
In the previous example of this fuel supply system, exist and possess petrolift, filter and steam delivery pipe
Fuel supply system (see, for example patent document 1).Petrolift is configured in fuel tank, and the steam discharge with discharge steam
Mouthful.Filter is filtered to the fuel of petrolift to be sucked.Steam delivery pipe is used to discharge steam from the steam of petrolift
Discharge mouthful into fuel tank, its opening portion is configured at the suction inlet position on the lower than filter.Thus, in engine stop
When be petrolift work stop when, suppress air enter from steam outlet into petrolift, suppress 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.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 10-61517 publications
The content of the invention
Problems to be solved by the invention
In past case, in the case where filter generates blocking, it is contemplated that：The suction 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 that there is provided one kind can suppress air and
The fuel supply system that foreign matter enters from steam outlet into petrolift.
The solution used to solve the problem
The problem can be solved by the fuel supply system of the present invention.1st invention is a kind of fuel supply system, the combustion
Material feedway is configured in fuel tank, and possesses petrolift, and the petrolift has the steam outlet of discharge steam, wherein,
The fuel supply system possesses：Vapor storage portion, it stores the steam ejected from the steam outlet of the petrolift；And steaming
Gas discharge pipe, bottom-boot of its steam for flowing out the vapor stream outlet from the vapor storage portion to the fuel tank.
According to the structure, from the steam outlet of petrolift eject it is vapor fueled be stored to behind vapor storage portion, arranged via steam
Bottom-boot from outlet pipe to fuel tank.Therefore, even if the fuel in fuel tank tails off, the opening portion of steam exhaust pipe can also be suppressed
On liquid level.Thus, when being that the work of petrolift stops in engine stop, suppress air from steam outlet to combustion
Expect to enter in pump, suppress the outflow of the fuel in petrolift caused by the entrance of 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 is generated
In the case of blocking, by making the suction of petrolift act on steam outlet, the combustion flow backwards in steam exhaust pipe
Material is sucked via vapor storage portion from steam outlet into petrolift.Therefore, the flowing of fuel changes in vapor storage portion
Become, enter so as to suppress the foreign matter contained by the fuel flow backwards into petrolift.
2nd invention 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 is configured in the way of respective axis is parallel to each other.According to the structure, with such as petrolift
The situation that steam outlet is configured on same axis with the vapor stream outlet in vapor storage portion is compared, the steaming from vapor storage portion
Air stream outlet is complicated to the refluence path of the steam outlet of petrolift.Thus, suppress foreign matter from vapor storage portion
Refluence from vapor stream outlet to the steam outlet of petrolift.Enter therefore, it is possible to further suppress foreign matter into petrolift.
3rd invention 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 the structure, suppress the steaming from vapor storage portion of foreign matter
Refluence from air stream outlet to the steam outlet of petrolift.Enter therefore, it is possible to further suppress foreign matter into petrolift.
4th invention according to the fuel supply system of any one of 1st~3 invention, wherein, the vapor storage portion bag
Include：The petrolift；The container member of cup-shaped, it is chimeric with the petrolift；Cushion member, its to the petrolift with it is described
Sealed between container member.According to the structure, the situation of the steam outlet with steam exhaust pipe to be connected to petrolift
(with reference to patent document 1) is different, it is possible to increase the free degree of the configuration of steam exhaust pipe.In addition, vapor storage portion be formed in
On petrolift identical axis, therefore, it is possible to the deterioration for the carrying for suppressing petrolift.
5th invention according to the fuel supply system of the 4th invention, wherein, the compression degree of the cushion member compares described
The compression degree that sealed containment member is carried out between the fuel ejiction opening of petrolift and the component of The lid component side is low.According to the knot
Structure, can suppress the bias contracting of containment member, suppress poor sealing.In addition, cushion member makes pressure by the change of cross sectional shape
The change for the elastomeric material that shrinkage reduces or passes through cushion member reduces rubber hardness, so as to be set to compression degree ratio
The compression degree of containment member is low.
6th invention according to the fuel supply systems of the 4th or 5 inventions, wherein, the steam exhaust pipe and be formed at the appearance
The vapor stream outlet of device component is fitted together to, and carries out anticreep using the constituent parts of fuel feed system., can according to the structure
Using the constituent parts of fuel feed system be fitted to the vapor stream outlet of container member steam exhaust pipe it is anti-
It is de-.Therefore, it is possible to simplify installation constitution of the steam exhaust pipe relative to container member.
Brief description of the drawings
Fig. 1 is the stereogram for the fuel supply system for representing embodiment 1.
Fig. 2 is the front view for representing fuel supply system.
Fig. 3 is the top view for representing fuel supply system.
Fig. 4 is the side view for supplying it to device biopsy cavity marker devices to represent.
Fig. 5 is to supply it to the stereogram that device decomposes to represent.
Fig. 6 is the front view for representing the relation between housing and steam exhaust pipe.
Fig. 7 is Fig. 6 VII-VII line regarding sectional views.
Fig. 8 is Fig. 6 VIII-VIII line regarding sectional views.
Fig. 9 is the sectional view for the seal construction for representing vapor storage portion.
Figure 10 is the top view for the anti-loose structure for representing steam exhaust pipe.
Figure 11 is the sectional view of the seal construction in the vapor storage portion for representing embodiment 2.
Figure 12 is the sectional view of the seal construction in the vapor storage portion for representing embodiment 3.
Figure 13 is the sectional view of the seal construction in the vapor storage portion for representing embodiment 4.
Figure 14 is the sectional view of the seal construction in the vapor storage portion for representing embodiment 5.
Description of reference numerals
10th, fuel supply system；12nd, fuel tank；13rd, opening portion；14th, install with plate (The lid component)；16th, petrolift；18、
Pump case (container member)；20th, fuel filter (constituent parts of fuel feed system)；33rd, pump fitting portion (The lid component side
Component)；44th, vapour injection portion (steam outlet)；48th, 1O shape sealing rings (containment member)；68th, 2O shape sealing rings
(cushion member)；72nd, vapor storage portion；74th, vapor stream outlet；80th, steam exhaust pipe；90th, T-shaped pad (cushion member)；92、
X-shaped pads (cushion member)；96th, 2O shape sealing rings (cushion member)；98th, 2O shape sealing rings (cushion member).
Embodiment
Hereinafter, the form for implementing the present invention is illustrated using accompanying drawing.
[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 stereogram for representing fuel supply system, and Fig. 2 is the fuel
The front view of feedway, Fig. 3 is the top view of the fuel supply system, and Fig. 4 is to carry out the fuel supply system biopsy cavity marker devices
The side view of expression, Fig. 5 is the stereogram for decomposing the fuel supply system to represent.In addition, for the convenience of explanation, will fire
Expect feedway orientation as shown in each figure in arrow as determine.In this case, the fuel tank of above-below direction and vehicle
The so-called world direction of gravity direction it is corresponding.
Illustrated from the summary of fuel supply system.As shown in figure 4, fuel supply system 10 is arranged at fuel tank
12.Fuel tank 12 is the container of for example metal hollow shape, with base plate 12a.It is formed with base plate 12a by circular port
The opening portion 13 of composition.The fuel of engine, the liquid fuel such as gasoline can be stored in fuel tank 12.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 to be formed
's.
As shown in figure 5, installation plate 14 is resinous, possesses the ceiling plate portion 24 of circular plate-like shape.Ceiling plate portion 24 have than
The big external diameter of the bore of the opening portion 13 (reference picture 4) of fuel tank 12.Being protruded 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, installing with plate 14 so that fitting cylinder section 25 and opening portion 13
Base plate 12a chimeric and that the mode that opening portion 13 is closed is installed on to fuel tank 12 using ceiling plate portion 24.In addition, installation plate
14 " The lid components " so-called equivalent in this specification.
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 words tubulose (reference picture 2) in the lower surface of ceiling plate portion 24.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 plate
The hollow cylindrical that the upper surface of the fitting cylinder section 25 in portion 24 is erected upward.Pipeline and combustion in fuel passage forming portion 29
Expect the pipeline connection in bleed pipe 27.Pipeline in the pipeline and fuel bleed pipe 27 in fuel passage forming portion 29 forms one
The fuel passage (mark reference 30) (reference picture 4) of series.
As shown in figure 4, the front side portion (in Fig. 4, being right side) in fuel passage forming portion 29 is formed with pump fitting portion
33.Pump fitting portion 33 be formed as be formed at fuel passage forming portion 29 front side portion circular plate shape bottom wall part 34 and from
The horizontal cylinder cup-shaped of the surrounding wall portion 35 for the hollow cylindrical that bottom wall part 34 extends towards front.Edge is formed with bottom wall part 34
The circular poroid connected entrance 36 of fore-and-aft 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
In the pump case 38 for integratedly loading cylindrical shape.Motor part is made up of brushless motor.Pumping section using motor part by 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；Discoideus pump cover 40, it closes housing cylinder 39
The open end of side (pumping section side)；Discoideus motor cover 41, it closes the opposite side (motor part side) of housing cylinder 39
Open end.For example, housing cylinder 39 is metal, pump cover 40 and motor cover 41 are resinous.
The cylindric fuel suction port 43 for making to connect inside and outside pumping section is formed with pump cover 40.Fuel suction port 43 is in pump cover
40 outer 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, in the main view of pump cover 40, when fuel suction port 43 is located at left end side, vapour injection portion 44 is located at
Upper end side (reference picture 6).Fig. 6 is the front view for representing the relation between shell and steam exhaust pipe.In addition, vapour injection portion 44
Equivalent to so-called in this manual " steam outlet ".
As shown in figure 5, being formed with the cylindric fuel ejiction opening 46 for making to connect inside and outside motor part in motor cover 41.Fuel
Ejiction opening 46 is formed as standing shape in the outer face of motor cover 41.As shown in figure 4, the part of the side of motor cover 41 of petrolift 16 is inserted
Enter in the pump fitting portion 33 of installation plate 14.The connected entrance 36 of the insertion of the fuel ejiction opening 46 pump fitting portion 33 of motor cover 41 and with
The connected entrance 36 of pump fitting portion 33 is connected.Motor cover 41 is abutted or approached with the bottom wall part 34 of pump fitting portion 33.To even
Flexibly sealed O-ring seals 48 are carried out between port 36 and fuel ejiction opening 46 to fall between.In addition, O shapes are sealed
Circle 48 is equivalent to so-called in this manual " containment member ".
The lead 49 electrically connected with petrolift 16 is connected (reference picture 3) with the electric connector 31 of installation plate 14.Petrolift
After 16 make in pumping section the fuel boosting that is sucked from fuel suction port 43 under the driving of motor part, via in motor part from combustion
Material ejiction opening 46 sprays.
As shown in figure 5, pump case 18 is resinous, be formed as cylinder cup-shaped.Pump case 18 has hollow cylindrical
The discoideus end wall 51 of the open end of the side in barrel portion 50 and closing barrel portion 50.Being formed with end wall 51 makes end
The cylindric connector 52 of the inside and outside connection of wall portion 51.Connector 52 is dashed forward round about from the inside and outside both ends of the surface of end wall 51
Go out.As shown in figure 4, in connector 52, the overhang ratio for rearward (in Fig. 4, being left) from the inner surface side of end wall 51
The overhang for (in Fig. 4, being right) forwards from the outer surface side of end wall 51 is small.
In the partial insertion pump case 18 of the side of pump cover 40 of petrolift 16.The barrel portion 50 of pump case 18 rearward end (
It is left part in Fig. 4) utilize the leading section (in Fig. 4, being right part) of the snap-fitted pump fitting portion 33 with installation plate 14
Link up (reference picture 1 and Fig. 3).The fuel suction port 43 of pump cover 40 inserts the connection of pump case 18 almost very close to each otherly
Mouthfuls 52 and connected with the connector 52 of pump case 18.As shown in fig. 6, connector 52 is configured at end wall 51 in main view
Left end side.Thus, the fuel suction port 43 of pump cover 40 is configured at left end side, in addition, vapour injection portion 44 is configured at upper end side.
As shown in figure 4, what petrolift 16 was surrounded with housing to the pump fitting portion 33 and pump case 18 by installing with plate 14
The state of spatial portion is kept.Pump cover 40 is abutted or approached with connector 52.In addition, by pump fitting portion 33 He of the installation with plate 14
Pump case 18 constitutes the pump collecting component 53 for housing petrolift 16.In addition, pump case 18 is equivalent to so-called in this manual
" container member ".In addition, pump fitting portion 33 is equivalent to so-called in this manual " component of The lid component side ".
The ring-type of encirclement connector 52 is formed between the end wall 51 of pump case 18 and the pump cover 40 of pump case 38
Spatial portion 54a.Spatial portion 54a is connected with the vapour injection portion 44 of petrolift 16.In addition, in the barrel portion 50 of pump case 18 and pump
Small gap is set with along radial direction between the housing cylinder 39 of housing 38.Thus, 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 spatial portion 54a of ring-type and the space of tubular
Portion 54b is interconnected.
As shown in figure 5, fuel filter 20 possesses filter member 55 and installation component 56.Filter member 55 by with
Fuel is set to be formed as flat bag by but by the filtering material of the sheet such as the non-woven fabrics of function that removes of foreign matter in fuel
Shape.Filter member 55 configures (1~Fig. 3 of reference picture) with the state of flat direction (thickness direction) towards left and right directions.In addition,
Although not shown, but in filter member 55 contain for filter member 55 to be remained into the state of expanding (state of expansion)
Resinous in-seam frame member.
Installation component 56 is resinous, is formed as the L word tubuloses with the 1st pipe portion 57 and the 2nd pipe portion 58.1st pipe portion
57 open end is to connect in the central portion of the one side of filter member 55 (left surface) 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 points to rear.In the 2nd pipe portion 58 on two sides are formed with up and down
Under installation sheet 60 (reference picture 5) in a pair.Two installation sheets 60 utilize the front end of its elasticity and end wall 51 in pump case 18
The elastic locking piece 62 up and down in a pair that face is protruded engages.I.e., the installation component 56 of fuel filter 20 utilizes snap-fitted
It is installed on pump case 18 (1~Fig. 3 of reference picture).Pump case 18 connector 52 insertion installation component 56 the 2nd pipe portion 58 and with
2nd pipe portion 58 is connected.
Pressure regulator 22 has columned outward 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, in fuel passage forming portion 29 being provided with anticreep component 64 using snap-fitted
(reference picture 1 and Fig. 3).Pressure regulator 22 carries out anticreep with the state having good positioning using anticreep component 64.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
Spray and discharge in fuel tank 12.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.
It is installed in fuel supply system 10 under the state of fuel tank 12 (reference picture 4), the fuel being connected with engine is supplied
The fuel bleed pipe 27 of installation plate 14 is connected to pipe arrangement.In addition, electric connector 31 is connected with aerial lug (not shown).
Then, the work of fuel supply system 10 is illustrated.Petrolift 16 is driven by external power source.Thus, in fuel tank 12
Fuel by fuel filter 20 filter and after fuel as cleaning, via the connector 52 of pump case 18 from petrolift 16
Fuel suction port 43 sucked to pumping section.Fuel is after the pumping section of petrolift 16 is boosted, from fuel ejiction opening 46 to installation
With ejection in the fuel passage 30 of plate 14.The fuel being ejected into fuel passage 30 is matched somebody with somebody from fuel bleed pipe 27 via fuel supply
Pipe (not shown) is supplied 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 predetermined pressure.
Then, construction is discharged to the steam for being arranged at fuel supply system 10 to illustrate.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 the bottom of fuel tank 12 i.e. base plate 12a neighbouring guiding.
As it was previously stated, being formed between the pump case 38 and pump case 18 of the petrolift 16 of fuel supply system 10 mutually
The spatial portion 54a of the ring-type of the connection and spatial portion 54b of tubular.Therefore, opening the spatial portion 54b of tubular as follows
Mouth end (rearward end) seals and formd the vapor storage chamber of the spatial portion as sealed shape with two spatial portion 54a, 54b
54.Fig. 7 is Fig. 6 VII-VII line regarding sectional views, and Fig. 8 is Fig. 6 VIII-VIII line regarding sectional views, and Fig. 9 is to represent to steam
The sectional view of the seal construction of gas reservoir.
As shown in figure 9, the open end in the barrel portion 50 of pump case 18 inner peripheral portion be formed with make internal diameter expand platform
Rank groove 66.Being fitted together in step groove 66 has the O-ring seals 68 (reference picture 4) padded as O shapes.O-ring seals 68 are to barrel
Flexibly sealed between the housing cylinder 39 of portion 50 and pump case 38.In addition, O-ring seals 68 are equivalent in this specification
In so-called " cushion member ".In addition, convenient for explanation, by O-ring seals 68, referred to as " 2O shape sealing rings 68 ", will above
The O-ring seals 48 of appearance are referred to as " 1O shape sealing rings 48 ".
Resinous locating snap ring 70 (ginseng is continuously installed in step groove 66 using press-in with 2O shape sealing rings 68
According to Fig. 4).70 pairs of 2O shape sealing rings 68 of locating snap ring carry out anticreep.In addition, locating snap ring 70 is also fitted together to using installation with the pump of plate 14
The front end face (top end face) in portion 33 carries out anticreep.
By using based on pump case 38 and pump case of the seal construction of 2O shape sealing rings 68 to petrolift 16
The spatial portion 54b of tubular between 18 open end is sealed, and is formed with (the reference picture of vapor storage chamber 54 of sealed shape
4).In addition, being constituted by the pump case 38 of petrolift 16, pump case 18 and 2O shape sealing rings 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 and makes the cylindric steam of the inside and outside connection of end wall 51
Flow export 74.Vapor stream outlet 74 is protruded round about from the inside and outside both ends of the surface of end wall 51.For vapor stream outlet 74, from
The inner surface side of end wall 51 rearward (in fig. 7, it is left) overhang than the outer surface side from end wall 51 forwards
The overhang of (in fig. 7, it is right) is small.In addition, the inner surface side from end wall 51 of vapor stream outlet 74 rearward prominent
Output is more slightly smaller (reference picture 8) than the overhang forwards of the outer surface side from end wall 51 of connector 52.
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-hand member side.Vapor stream outlet 74 is configured at position of the vapour injection portion 44 than petrolift 16 by ground side.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 are configured in the way of respective axis is parallel to each other.In other words, steam
The axis (not shown) of ejection section 44 and the axis 74L (reference picture 7 and Fig. 8) of vapor stream outlet 74 are configured at what is offset one from another
Position.
As shown in fig. 6, being protruded in the outer face (front end face) of end wall 51 in the top of vapor stream outlet 74 and steam
The adjacent rotation prevention portion 76 (reference picture 1) of flow export 74.Rotation prevention portion 76 is formed as inverted U-shaped in main view.In addition, in end wall 51
Outer 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 projection 78 (reference picture 5).Two rotation stop projections 78 are formed as in the quadrangle tabular being parallel to each other.
Next, to for by the steam of the vapor storage chamber 54 in vapor storage portion 72 towards fuel tank 12 base plate
The steam exhaust pipe 80 of 12a neighbouring guiding is illustrated.As shown in figure 5, steam exhaust pipe 80 is resinous, it is in pipe
The upper end of the pipe main body 81 of shape forms the installing port 82 of cylindrical shape in bent angle shape.Formed in the upper end of installing port 82
There is flat engaging protrusion 84.The flat card across both is formed with pipe main body 81 and interior angle side formed by installing port 82
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 the installing port 82 and axis 74L of vapor stream outlet 74 is 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 press-in
(reference picture 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 projections 78 it
Between (reference picture 6).Thus, steam exhaust pipe 80 is by relative to the rotation stop of pump case 18.
As shown in fig. 7, in side view, pipe main body 81 is with downward and inclined mode is configured diagonally forward.In addition, such as
Shown in Fig. 6, in main view, pipe main body 81 is configured by downward and in the way of being slightly tilted to the right.In addition, pipe main body 81
Lower end opening portion is that the outlet 88 of 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 (reference picture 4) of height.
Steam exhaust pipe 80 is installed on pump case 18 before fuel filter 20 is installed relative to pump case 18.I.e., exist
Steam exhaust pipe 80 is installed to (reference picture 8) after pump case 18, fuel filter 20 is installed on the (reference picture of pump case 18
1~Fig. 3 and Figure 10).Thus, the 1st pipe portion 57 of the installation component 56 of fuel filter 20 is configured at and steam exhaust pipe 80
Installing port 82 front side (in Fig. 10, be right side) close proximity.Thus, even if steam exhaust pipe 80 is from pump case 18
Vapor stream outlet 74 deviates slightly towards direction is extracted, and installing port 82 is also abutted (in Figure 10 with the 1st pipe portion 57 of installation component 56
In, with reference to double dot dash line 82).It is therefore prevented that steam exhaust pipe 80 further deviates or come off to extraction direction.In addition, for
Installation component 56, installation component 56 is installed on pump case 18 using snap-fitted, it is therefore prevented that installation component 56 is discharged with steam
Pipe 80 comes off together.In addition, fuel filter 20 is equivalent to " the composition of fuel feed system zero so-called in this manual
Part ".
According to described fuel supply system 10, then from the vapour injection portion 44 of petrolift 16 eject it is vapor fueled
After the vapor storage chamber 54 in vapor storage portion 72 is stored in via bottom-boot from steam exhaust pipe 80 to fuel tank 12.Cause
This, even if the fuel in fuel tank 12 tails off, also suppresses the opening portion 13 of steam exhaust pipe 80 on liquid level.Thus,
When being that the work of petrolift 16 stops during engine stop, suppress air and enter from vapour injection portion 44 into petrolift 16, press down
Make the outflow of the fuel in petrolift 16 caused by the entrance of the air.Thus, it is possible to shorten when restarting of engine
The pressure rising time of petrolift 16.
In addition, be connected in the case that the fuel filter 20 of fuel suction port 43 of petrolift 16 generates blocking,
By making the suction 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, the foreign matter contained by the fuel of refluence can be suppressed 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 is configured.Thus, for example, vapour injection portion 44 and the vapor stream outlet in vapor storage portion 72 with petrolift 16
74 situations about being configured on same axis are compared, from the vapor stream outlet 74 in vapor storage portion 72 to the vapour injection of petrolift 16
The refluence path in portion 44 is complicated.Thus, foreign matter is suppressed from the vapor stream outlet 74 in vapor storage portion 72 to petrolift 16
Vapour injection portion 44 flows backwards.Enter therefore, it is possible to further suppress foreign matter 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, suppress foreign matter and 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
Sealed 2O shape sealing rings 68 are carried out between pump 16 and pump case 18 to constitute.Thus, with vapour injection portion 44 is connected into combustion
Expect that the situation (with reference to patent document 1) in the vapour injection portion 44 of pump 16 is different, it is possible to increase the configuration of steam exhaust pipe 80 from
By spending.In addition, vapor storage portion 72 is formed on coaxial with petrolift 16, therefore, it is possible to suppress the carrying of petrolift 16
Deteriorate.
In addition, comparing combustion to the compression degree that sealed 2O shape sealing rings 68 are carried out between petrolift 16 and pump case 18
Expect pump 16 fuel ejiction opening 46 and installation with the pressure that sealed 1O shape sealing rings 48 are carried out between the pump fitting portion 33 of plate 14
Contracting degree is low.For example, 2O shape sealing rings 68 reduce rubber hardness by the change of elastomeric material, so as to be set to compress journey
The compression degree of Du Bi 1O shape sealing rings 48 is low.Thus, it is possible to suppress the bias contracting of 1O shape sealing rings 48, suppress sealing not
It is good.
Specifically, petrolift 16 is supported on pump in double base shape and houses component 53.I.e., fuel ejiction opening 46 is via 1O
Shape sealing ring 48 is supported on the connected entrance 36 of the pump fitting portion 33 of installation plate 14, also, fuel suction port 43 is supported on and connected
Tie the connector 52 of the pump case 18 of installation plate 14.Therefore, close for example to being carried out between petrolift 16 and pump case 18
The 2O shape sealing rings 68 of envelope using with the material identical materials of 1O shape sealing rings 48 in the case of, as 3 dot points, because
This, compared to 2O shape sealing rings 68, the 1O shape sealing rings 48 of path side produce bias contracting, it is possible to produce poor sealing.
Therefore, 2O shape sealing rings 68 can be pressed down using the compression degree O-ring seals lower than the compression degree of 1O shape sealing rings 48
The bias contracting of 1O shape sealing rings 48 is made, suppresses poor sealing.
In addition, the installing port 82 of steam exhaust pipe 80 is embedded in the vapor stream outlet 74 in the formation of 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, it is possible to simplify steam exhaust pipe 80 relative to pump
The installation constitution of shell 18.
[embodiment 2] present embodiment is to apply change to the seal construction in the vapor storage portion 72 in embodiment 1
, therefore, illustrate that it changes part, the repetitive description thereof will be omitted.Figure 11 is that the seal construction for representing vapor storage portion is cutd open
View.As shown in figure 11, present embodiment is that the 2O shape sealing rings 68 in embodiment 1 are altered into section shape in T shape
T-shaped pad 90.So, T-shaped pad 90 reduces compression ratio by the change of cross sectional shape, is set to its compression degree
Compression degree than 1O shape sealing rings 48 is low.In addition, T-shaped pads 90 " cushion members " so-called equivalent in this specification.
[embodiment 3] present embodiment is to apply change to the seal construction in the vapor storage portion 72 in embodiment 1
, therefore, illustrate that it changes part, the repetitive description thereof will be omitted.Figure 12 is that the seal construction for representing vapor storage portion is cutd open
View.As shown in figure 12, present embodiment is that the 2O shape sealing rings 68 in embodiment 1 are altered into section in X word shapes
X-shaped pad 92.So, X-shaped pad 92 reduces compression ratio by the change of cross sectional shape, is set to its compression degree
Compression degree than 1O shape sealing rings 48 is low.In addition, X-shaped pads 92 " cushion members " so-called equivalent in this specification.
[embodiment 4] present embodiment is to apply change to the seal construction in the vapor storage portion 72 in embodiment 1
, therefore, illustrate that it changes part, the repetitive description thereof will be omitted.Figure 13 is that the seal construction for representing vapor storage portion is cutd open
View.As shown in figure 13, present embodiment is formed with endless groove 94 in the outer peripheral face of the housing cylinder 39 of petrolift 16.In ring-type
Groove 94 is configured with to flexibly carrying out sealed 2O between the barrel portion 50 of pump case 18 and the housing cylinder 39 of pump case 38
Shape sealing ring (mark reference 96).In addition, 2O shape sealing rings 96 are equivalent to " pad structure so-called in this manual
Part ".
[embodiment 5] present embodiment is to apply change to the seal construction in the vapor storage portion 72 in embodiment 1
, therefore, illustrate that it changes part, the repetitive description thereof will be omitted.Figure 14 is that the seal construction for representing vapor storage portion is cutd open
View.As shown in figure 14, present embodiment is that inner end (end of the side of end wall 51) in pump case 18 is configured with opposite end
The side of sealed 2O shape sealing rings (mark reference 98) is flexibly carried out between the pump cover 40 of wall portion 51 and pump case 38
Formula.The wall portion 99 for the ring-type being embedded in 2O shape sealing rings 98 is formed with the inner face of end wall 51.In this case, may be used
The spatial portion 54b (reference picture 7) of tubular is omitted from the vapor storage chamber 54 in vapor storage portion 72.In addition, 2O shape sealing rings 98
Equivalent to so-called in this manual " cushion member ".
[other embodiment] present invention is not limited to embodiment, can carry out not departing from the model of the purport of the present invention
Enclose interior change.For example, the present invention is not limited to vehicle, it can also be applied to the fuel supply system of ship, industrial machine etc..
In addition, the present invention be readily applicable to by installation plate 14 be installed on the upper surface part of fuel tank 12 on put type fuel supply
To device.In addition, being that fuel flowmeter sensor that residual is detected can also be with pump case 18 to the fuel quantity in fuel tank 12
Modularization.In addition, in embodiments, the vapor stream outlet 74 in vapor storage portion 72 is configured at the steam relative to petrolift 16
The eccentric position of ejection section 44, but it is also possible to be configured on same axis, can also be configured with twisted position relationship.In addition,
Steam exhaust pipe 80 both can be integrated with pump case 18, can also be integrally formed.
Claims (6)
1. a kind of fuel supply system, the fuel supply system is configured in fuel tank, and possesses petrolift, the petrolift has
The steam outlet of steam is discharged, wherein,
The fuel supply system possesses：
Vapor storage portion, it stores the steam ejected from the steam outlet of the petrolift；And
Steam exhaust pipe, its steam for flowing out the vapor stream outlet from the vapor storage portion is to the bottom of the fuel tank
Guiding.
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 axis of mouth and the vapor stream outlet in the vapor storage portion is parallel to each other is configured.
3. fuel supply system according to claim 2, wherein,
The steam outlet of the petrolift be configured at than the vapor storage portion vapor stream outlet lean on top side position.
4. according to fuel supply system according to any one of claims 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 between the petrolift and the container member to sealing.
5. fuel supply system according to claim 4, wherein,
The compression degree of the cushion member is compared and carried out between the fuel ejiction opening of the petrolift and the component of The lid component side
The compression degree of sealed containment member is low.
6. the fuel supply system according to claim 4 or 5, wherein,
The steam exhaust pipe is chimeric with the vapor stream outlet for being formed at the container member, and utilizes the structure of fuel feed system
Anticreep is carried out into parts.
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 true CN107304739A (en) | 2017-10-31 |
| CN107304739B 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 |
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| 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 |
| CN107304739B (en) | 2019-11-05 |
| JP6608328B2 (en) | 2019-11-20 |
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