CN101213362B - Fuel pump - Google Patents
Fuel pump Download PDFInfo
- Publication number
- CN101213362B CN101213362B CN2006800238738A CN200680023873A CN101213362B CN 101213362 B CN101213362 B CN 101213362B CN 2006800238738 A CN2006800238738 A CN 2006800238738A CN 200680023873 A CN200680023873 A CN 200680023873A CN 101213362 B CN101213362 B CN 101213362B
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- China
- Prior art keywords
- fuel
- pump
- petrolift
- bracket
- motor
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- Expired - Fee Related
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D5/00—Pumps with circumferential or transverse flow
- F04D5/002—Regenerative pumps
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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
- F02M37/04—Feeding by means of driven pumps
- F02M37/08—Feeding by means of driven pumps electrically driven
- F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
- F02M37/103—Mounting pumps on fuel tanks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A fuel pump enabling a reduction in the size of a fuel feeder and an increase in the durability thereof. The fuel pump (1) comprises a pump part (P) disposed on the lower part of a cylindrical yoke (3) and a brush type motor part (M) disposed on the upper part of the yoke (3) and driving the pump part (P). A pump bracket (10) covering the pump part (P) side end part of the yoke (3) comprises a fuel suction part (10c) sucking a fuel into the pump part (P) and a fuel discharge part (10d) discharging the fuel to the outside of the pump part (P). An upper side bracket (4) forming the motor part (M) comprises a pressure regulating device (17).
Description
Technical field
The invention belongs to the technical field of the petrolift on the vehicles such as being equipped on two-wheeled motor vehicle.
Background technique
Usually, in constituting the petrolift of such for motor vehicle fuel supply device, have with petrolift be arranged on the base of fuel tank, the petrolift of formula in petrolift is immersed in the case that drives under the state in the fuel.In this case, the fuel pump structure does, pump portion is configured in the below of tubular shell, and the motor part of driven pump portion is configured in the top of housing, even the fuel of fuel tank tails off, also can stably carry out the supply of fuel.
Adopt motor as the motor part that is used for petrolift; Said motor is arranged on commutator on the motor drive shaft, and external power supply is supplied to the brush with this commutator sliding contact, revolution motor axle whereby; In such motor part, fuel discharge portion is arranged on motor part side (patent documentation 1).
In addition; Be assembled into the structure of the fuel supply device of formula in the case as petrolift, propose following scheme, promptly such motor part of utilizing electric brush type; Utilize to connect the inside and outside pipe arrangement of fuel tank, will be directed to engine side (patent documentation 2) from the fuel that petrolift is discharged.
Patent documentation 1: the spy opens flat 10-47291
Patent documentation 2: special public table 2003/044357
Summary of the invention
Yet; In the petrolift of aforementioned existing technology, fuel discharge portion is arranged on the motor part side, will be directed under the situation of engine side from the fuel that fuel discharge portion discharges; The pipe arrangement that is connected in the fuel discharge portion of upside is directed to the below, is drawn out to the outside of fuel tank.Therefore; The pipe arrangement that leads to engine side is elongated, and it is big that the pressure loss becomes, for the output that obtains stipulating; Not only exist the problem that must the output of petrolift be maximized, and exist not only the complex structure of fuel supply device but also the problem that fuel supply device is maximized.
Therefore, proposed fuel discharge portion not to be formed on the motor part place of upside and be formed in the pump portion place of downside, shortened the scheme of the pipe arrangement that leads to engine side; But, in this case, become the state that is full of fuel in the motor part; Fuel does not flow; Therefore, the fuel that gets into the motor part side does not move (stagnation), exists the problem that the air that gets into together with fuel can not be overflowed.Particularly, utilizing electric brush motor to constitute under the situation of motor part, produce the brush wear powder; But because the fuel in this wearing and tearing powder and the motor part is stagnated together, it is first-class to be attached to commutator; The danger that is short-circuited is not only arranged, and, because air trapping is on the top of fuel tank; Be in the danger under the gas atmosphere so exist the commutator that is configured in said top and the slide part of brush; Like this, the durability of petrolift etc. can have problems, and these are problems that will solve of the present invention.
The present invention is that purpose is created in view of aforesaid situation, to solve these problems; Scheme 1 described invention is characterized in that, the pump portion that in utilizing, is contained in lower housing portion with in be contained in housing top and constitute when being arranged on the petrolift on fuel tank base with the motor part of driven pump portion; Pump portion side at housing; The fuel discharge portion that is discharged to the outside of pump portion with the fuel suction portion in the fuel suction pump portion with fuel is set, simultaneously, exhaust gear is set in the motor part side of housing.
The invention of scheme 6, in any one, motor part is made up of the motor of electric brush type in scheme 1 to 5.
According to scheme 1,3 described inventions, except that the compactness that makes petrolift, can shorten the pipe arrangement that leads to engine side, and, can process the petrolift of excellent in te pins of durability.
According to scheme 2 described inventions, can discharge the air of motor part expeditiously.
According to scheme 4 described inventions, can simplified structure, and reduce cost.
According to scheme 5 described inventions, can reduce the number of parts, the supply of fuel to petrolift can be stablized and carried out reliably to simplified structure on the other hand.
According to scheme 6 described inventions, can the wearing and tearing powder and the fuel stream of brush be discharged from motor part together, process the petrolift of excellent in te pins of durability.
Description of drawings
Fig. 1 is the cross-section front view of petrolift.
Fig. 2 is the perspective view of space bar.
Fig. 3 is the amplification view of major component.
Symbol description
1 petrolift
2 fuel tanks
The 2a base
The 2b through hole
3 yokes
5 armatures
The 5a armature shaft
6 commutators
7 brushes
8 permanent magnets
9 lower bracket
10 pump brackets
10c fuel suction portion
10d fuel discharge portion
11 impellers
13 pump stay unit
13c stay sheet
The 13f fuel supplies
13g fuel path of navigation
14 space bars
15 fuel filters
17 pressure regulation devices
Embodiment
Below, according to accompanying drawing form of implementation of the present invention is described.
In the accompanying drawings, the 1st, the petrolift of formation fuel supply device, this petrolift 1 is made up of P of pump portion and motor part M; The said pump P of portion under the state that is installed on the fuel tank of describing the back 2, is positioned at the below that becomes fuel tank 2 base 2a sides; Said motor part M is positioned at the top of the P of this pump portion.Aforementioned motor part M and the P of pump portion are equipped with the yoke cylindraceous 3 that constitutes housing of the present invention; On the tube end face of these yoke 3 upper end portions, form upside end difference 3a, the outer periphery portion of the last lateral bracket 4 of the ring-type of the upper end portion that constitutes housing is held back receive on this upside end difference 3a.
The 5th, the armature of formation motor part M, the upper end that constitutes armature shaft (motor drive shaft) 5a of this armature 5 can be rotated freely ground axle suspension and is arranged among the 4a of bearing portion of lateral bracket 4 axis central parts recessed.And then, the suit commutator 6 integrally in the upper end portion of aforementioned electric pivot 5a, the structure of this commutator 6 is for circumferential direction is provided with the commutator segment 6b of a plurality of electric conductivity in the outer circumferential face upper edge of resinous annulus 6a.On the other hand; The lower end surface of lateral bracket 4 on aforementioned; Be integrally formed a pair of brush carrier 4b along circumferential direction, configuration is set the internal side diameter front-end face of each brush 7 with elastic force pushing state for and is contacted with commutator segment 6b by the brush 7 that loads to internal side diameter respectively on this brush carrier 4b.In addition, armature shaft 5a cover install to suit portion on the commutator 6 below, a plurality of toroidal core material of suit 5b integrally; Periphery at these incorporate core material 5b; A plurality of coil 5c of the commutator segment 6b conducting of installation and the regulation of reeling whereby, constitute armature 5.
In addition, the 8th, a pair of permanent magnet, said a pair of permanent magnet is fixed on the inner peripheral surface with the yoke 3 of armature 5 subtends there to be predetermined distance ground mode in circumferential direction, with the periphery of the inner peripheral surface of this permanent magnet 8 and armature 5 set for each other near and subtend.
And then; The underpart 5d of armature shaft 5a runs through through hole 9a; Said through hole is opened in the axis central part of lower bracket 9 that will constitute the P of pump portion and be fixed on the ring-type of yoke 3 underparts, and, but the underpart 5d of armature shaft 5a is configured in the bearing 9b free rotary ground supporting on this through hole 9a.And, aforementioned each coil 5c is excitatory through on brush 7, external power supply being provided as hereinafter described via commutator segment 6b, whereby, make armature core 5 in the yoke that is formed with magnetic pole 3, rotated by permanent magnet 8.
The outer periphery portion of the outer periphery portion of aforementioned lower bracket 9 and the pump bracket 10 of the underpart of shape that is configured to collide and formation housing of the present invention with the below of this lower bracket 9; Hold back to connect and be installed on the downside end difference 3b that is formed on the yoke 3, utilize lower bracket 9 and pump bracket 10 to constitute the pump P of portion.
On the lower surface of aforementioned lower bracket 9, form the recess 9c of lower opening, more lean on the outer periphery portion of outside diameter to collide through what make pump bracket 10 and this lower bracket 9 than recess 9c, formation pump chamber PR between lower bracket 9 and pump bracket 10.And; The underpart 5d of the armature shaft 5a that runs through the through hole 9a of lower bracket 9 and give prominence to downwards; Be projected in the aforementioned pump chamber PR, peripheral portion is formed with the impeller 11 of blade part 11a outside, runs through being bearing on this outstanding underpart 5d with the state that prevents to rotate through the key cooperation; Whereby, set the driving that is accompanied by motor part M for and make impeller 11 rotations.
In addition; Outside diameter at the recess 9c of aforementioned lower bracket 9; Become the annular recessed portion 9d of fuel flow path with the blade part 11a subtend of impeller 11 ground, simultaneously, offer the motor-side discharge 9e of portion; The said motor-side discharge 9e of portion is communicated with this annular recessed portion 9d and connects at above-below direction, with being communicated with to get up between motor part M and the P of pump portion.On the other hand; Upper surface at pump bracket 10; Be formed be projected in the aforementioned pump chamber PR, with recess 10a with the underpart 5d loose fit of the armature shaft 5a of the state support impeller 11 that prevents to rotate; Simultaneously, become to subtend the annular recessed portion 10b of fuel flow path with the 11a of impeller blade portion (lower bracket annular recessed portion 9e).And then; Be formed on the poroid fuel suction 10c of portion of tube that on above-below direction, connects under the state that is communicated with aforementioned annular recessed portion 10b and suck fuel; With the different circumferential position place of this fuel suction 10c of portion, form the poroid fuel discharge 10d of portion of tube, the said fuel discharge 10d of portion connects on above-below direction with the state that is communicated with annular recessed portion 10b; And outstanding downwards, fuel is discharged to the outside.
12 are arranged on the one-way valve on the fuel discharge 10d of portion; This one-way valve 12 includes the valve body 12a and the spherical spool 12c of bottom tube-like; Said spherical spool 12c will be opened in the through hole 12b sealing on the base that is positioned at this valve body 12a top; Reach the pressure of regulation through the pressure that makes the fuel of discharging from the fuel discharge 10d of portion, spool 12c opens the through hole 12b of valve body 12a, and fuel is discharged to the discharge path of navigation 13g side that the back is described.In addition; One-way valve 12 can dispose in the fuel discharge 10d of portion along the vertical direction with moving freely; Effect with safety valve; Fuel in being connected to the pipe arrangement of discharging path of navigation 13g side becomes high temperature and becomes under the situation of high pressure, and 12a moves to upper position through valve body, reduces the pressure of the fuel of discharging path of navigation 13g side.
On the other hand, 2a offers the through hole 2b of ring-type on the base of aforementioned fuel tank 2, and this through hole 2b is configured to be closed through pump stay unit (being equivalent to pump stay of the present invention) 13 is set.And aforementioned pump stay unit 13 in fuel tank 2, has the function of supporting fuel pump 1.
That is, the lower portion in aforementioned pump stay unit 13 is formed with the 13a of bottom tube-like portion, has on the tube outer circumferential face of the 13a of bottom tube-like portion at this, forms to the side-prominent lip part 13b of external diameter.And, there is the 13a of bottom tube-like portion to cover fuel tank through hole 2a through 13b of said flange portion and fuel tank through hole 2b being collided and fix, utilizing with closed shape, in this state, will there be the 13a of bottom tube-like portion to be the below that standing shape is configured in fuel tank 2.
And then; Pump stay unit 13; Position above lip part 13b is from becoming the last side neck ora terminalis that the 13a of bottom tube-like portion is arranged that is embedded into the position in the fuel tank 2, there to be the mode of specified gap along circumferential direction; Be integrally formed a plurality of stay sheet 13c that extend to the top, be integrally formed in the upper end portion of these stay sheets 13c to the bent fixed plate 13d of internal diameter lateral bending.In addition; Pump stay unit 13, through fixed plate 13d being fixed on the last lateral bracket 9 that is configured in the petrolift 1 in the fuel tank 2, at stay sheet 13c near yoke 3 also with it under the state of subtend; Supporting fuel pump 1; Whereby, in fuel tank 2, become downside ground vertical-position fixed bearing petrolift 1 with the P of pump portion.
In addition; Pump stay unit 13 from fuel tank 2 on outside (below) outstanding inner peripheral surface that the 13a of bottom tube-like portion is arranged; Forming downside becomes the end difference 13e of minor diameter; Discoid space bar 14 is fixed on this end difference 13e hermetically and with the state of colliding with it, and this space bar 14 will have the tube inside of the 13a of bottom tube-like portion to separate between the upper and lower.Here, space bar 14 is configured in the position of more leaning on the below than the base 2a of fuel tank 2, with the pump bracket 10 of the petrolift 1 that utilizes stay sheet 13c, fixed plate 13d to be to hold up the shape supporting relatively to the ground setting.
And, with pump bracket 10 relatively to the outside diameter position of space bar 14, form highlightedly towards the top with the fuel suction 10c of portion relatively to the suction of tubular use path of navigation 14a.This suction forms with fuel supplies 13f via the through hole 14b that is opened on the space bar 14 with path of navigation 14a with being communicated with, this suction with the outstanding front end of path of navigation 14a through in the fuel suction 10c of portion that embeds the tubular that is connected to aforementioned petrolift 1 side hermetically.Whereby, be accompanied by the rotation of the impeller 11 of petrolift 1, be stored in the fuel that filters of crossing in the fuel supplies 13f to the fuel suction 10c of portion supply via sucking with path of navigation 14a.
And then, at the outside diameter of space bar 14, be positioned at the fuel discharge 10d of portion of pump bracket 10 relatively to the outside diameter at position form to discharge and use through hole 14c.Aforementioned discharge is made up of the through hole of up/down perforation space bar 14 with through hole 14c, connects the fuel discharge 10d of portion of petrolift 1 side with closed shape.And, be embedded into aforementioned discharge and be embedded into hermetically in discharge path of navigation (the being equivalent to path of navigation of the present invention) 13g that is formed on the 13a of bottom tube-like portion with the perforation front end of the fuel discharge 10d of portion in the through hole 14c.Aforementioned discharge path of navigation 13a and the fuel supplies 13f that is formed on the 13a of bottom tube-like portion are spaced from each other; State with this fuel supplies 13f adjacency forms; Extend to outside diameter from the base side that the 13a of bottom tube-like portion is arranged; The end of stretching out at this discharge path of navigation 13g is connected with the pipe arrangement (not shown) that comes from engine side.
In addition; The peripheral part that the 13a of bottom tube-like portion is arranged that exposes at fuel tank 2 from pump stay unit 13; Position below more leaning on than fuel tank base 2c is connected with not shown outer type device, and is used to import external power supply and is integrally formed with the 13h of coupling piece portion.In addition; External power supply via the 13h of coupling piece portion input; L shaped the first terminal plate 16, the electrically conductive plate 16a towards above-below direction, the second terminal board 16b via planting on this coupling piece 13h are supplied to the brush 7 on the last lateral bracket 4 that is configured in petrolift 1.
And then the petrolift 1 of this form of implementation is on lateral bracket 4 on the formation motor part M; Pressure regulation device 17 as exhaust gear is set, reaches the pressure of regulation, the fuel in the petrolift 1 is discharged to fuel tank 2 sides through making petrolift 1 interior pressure (hydraulic pressure); Pressure in the adjustment fuel tank 1; Simultaneously, can with the aforementioned fuel that is discharged from together, extract the air that gets in the petrolift 1 out (discharges) to the outside.
Dispose aforementioned pressure regulating device 17 on form shrinkage pool 4c on the lateral bracket 4; Said shrinkage pool 4c is positioned at the position that does not form brush carrier 4b and forms from the cylindric groove of upper side towards the below; At this place pressure regulation device 17 is set, still, offers through hole 4e at the 4d place, bottom land limit of aforementioned shrinkage pool 4c; Said through hole 4e is positioned at portion of cylinder center, is communicated with between yoke 3 inside (petrolift 1 inside) and fuel tank 2 inside.
On the other hand; Aforementioned pressure regulating device 17 comprises the retainer 17a on the bottom land limit 4d that is fixed on lateral bracket shrinkage pool 4c; On this retainer 17a, form the first plate 17c and the second plate 17e, 4d forms the first intercommunicating pore 17b that is communicated with bottom land limit through hole 4e to the said first plate 17c along the bottom land limit, and the said second plate 17e is connected on this first plate 17c integrally; And be positioned at the opening side of shrinkage pool 4c, form the second intercommunicating pore 17d concentric with the first intercommunicating pore 17b.And, in retainer 17a, comprise the spherical spool 17f that can seal the first intercommunicating pore 17b, and with the loading spring mechanism 17g of this spool 17f to the direction loading that the first intercommunicating pore 17b is sealed.And; When in petrolift 1 (motor part M), producing the pressure of the loading force that surpasses the 17g of loading spring mechanism, the loading force of the spool 17f resistance loading spring 17g of mechanism moves up, and the bottom land limit through hole 4e and the first intercommunicating pore 17b are opened into connected state; Fuel in the petrolift 1 gets in the shrinkage pool 4c from these through holes 4e, the first intercommunicating pore 17b; Be communicated with the outside that 17d flows out to lateral bracket 4 from being positioned at second of shrinkage pool 4c opening side, that is, flow out to the inboard of fuel tank 2.
In the petrolift 1 that constitutes like this; When from be connected to outer type device (not shown) on the 13h of coupling piece portion via the first terminal plate 16, electrically conductive plate 16a, the second terminal board 16b to brush 7 power supplies, when motor part M drives; Be accompanied by the rotation of armature shaft 5a, the impeller of the P of pump portion rotates integrally.Whereby,,, be inhaled in the P of pump portion to be stored in the fuel in the fuel supplies 13f through the state that filters from fuel tank 2 via the fuel suction 10c of portion.With the annular recessed portion 10b of the lower bracket annular recessed portion 9d of the subtend portion that is formed on the 11a of impeller blade portion and pump bracket as stream; This fuel that is inhaled into is guided make progress the motor-side discharge 9e of portion of lateral bracket 9 and the fuel discharge 10d of portion of pump bracket 10, and the fuel of process fuel path of navigation 13g is directed to engine side.In this case, under the little state of the loading force of the 17g of loading spring mechanism of the pressure ratio pressure regulation device 17 in petrolift P, spool 17f is urged on the first intercommunicating pore 17b, becomes the state with the first intercommunicating pore 17b locking.And, to get in the process of action at the pump of petrolift P, pressure in petrolift 1 is high, than under the big situation of the loading force of the 17g of loading spring mechanism, and spool 17f opens, and fuel escapes into the fuel tank side, whereby, the pressure in the adjustment petrolift 1.
At this moment, because under the situation in air gets into petrolift 1, the upside of this air trapping in petrolift 1 can be discharged air from the first intercommunicating pore 17b of the upside that is positioned at yoke 3 with fuel together expeditiously.
And then, in this case, be stored in the interior fuel of fuel supplies 13f to move as stream to the position of the fuel discharge 10d of portion from the fuel suction 10c of portion on the pump bracket 10 that is formed at the P of pump portion; Between the inner peripheral surface of the yoke 3 (permanent magnet 8) of motor part M and armature 5, do not form fuel flow path; Whereby, can set the inner peripheral surface of the yoke 3 (permanent magnet 8) of motor part M and the gap between the armature 5 as much as possible little, in addition; Because fuel flow path is only on the P of pump portion; So, correspondingly, can reduce the pressure loss.In addition; The fuel discharge 10d of portion via with the fuel supplies 13e of pump stay unit 13 fuel path of navigation 13g in abutting connection with configuration; Be directed into motor and survey, therefore, there is no need fuel supply device as existing technology; Process the labyrinth that will draw with the sealing shape from fuel tank from the pipe arrangement that engine side is led in the fuel discharge portion of petrolift, can be with the fuel supply device compactness.
In this form of implementation that constitutes as stated; Constitute the petrolift 1 of fuel supply device; Become brush 7 and the structure that is arranged on commutator 6 sliding contacts on the armature shaft 5a, with the periphery of armature 5 and the inner peripheral surface that is arranged on the permanent magnet 8 on yoke 3 inner peripheral surfaces each other near the state setting.In this case, petrolift 1 is erects the shape setting, on the pump bracket 10 of the P of pump portion that is positioned at downside, forms fuel suction 10c of portion and the fuel discharge 10d of portion; Although fuel is full of motor part M side,, in yoke 3; Promptly; Between the outer circumferential face of the inner peripheral surface of the yoke that is fixed with permanent magnet 83 and armature 5, do not form stream, so, can compactness.In addition,, can shorten the pipe arrangement that leads to engine side because the fuel discharge 10d of portion forms towards the below of fuel tank 2, so, can reduce the pressure loss, not only can make the petrolift compactness, and can be with the fuel supply device compactness.
Wherein, because pressure regulation device 17 is arranged in the diameter of the P of pump portion, so, further compactness.
And, wherein, because the fuel discharge 10d of portion is formed on the P of the pump portion side of petrolift 1, on the other hand; To be arranged on motor part M side as the pressure regulation device 17 of exhaust gear, so, arrive the pressure of stipulating through the pressure in the petrolift 1, fuel is turned back in the fuel tank 2; Pressure in the adjustment petrolift 1, simultaneously, when making aforementioned fuel turn back to fuel tank 2 sides, fuel can not stagnated; Produce motion, whereby, can the air and the fuel that get into motor part M side be discharged in the fuel tank 2 together; Air can not be trapped in the motor part M, and motor part M is under the liquid atmosphere, can improve the durability of petrolift 1.
And then; In the structure of embodiment of the present invention, owing to will be arranged on as the pressure regulation device 17 of exhaust gear on the last lateral bracket 4 that constitutes petrolift 1 upper end portion, so; In motor part M; Can be more effectively the air that is trapped in the top be discharged, so, the petrolift 1 of excellent in te pins of durability can be processed.
And then; The petrolift 1 of this form of implementation is bearing in the fuel tank 2, still by the stay sheet 13c of pump stay unit 13 and fixed plate 13d; In this case; On pump stay unit 13, be formed with the 13a of bottom tube-like portion, the said through hole 2b that has the 13a of bottom tube-like portion to cover the base 2a of fuel tank 2 hermetically is positioned at simultaneously than fuel tank base 2a and more leans on the below destination location; At this fuel supplies of formation 13f is arranged on the 13a of bottom tube-like portion, said fuel supplies 13f stores the fuel of the fuel suction 10c of portion that is used to be supplied to petrolift 1.Whereby, there is no need to be provided with independently the stay member and the fuel supplies of supporting fuel pump 1, can reduce number, the simplified structure of parts.And, since fuel supplies 13f be positioned at than fuel tank 2 more by under the position, so; Even the pasta of fuel tank 2 changes, can not receive its influence yet, can give petrolift 1 with supply of fuel; And; Even the fuel in the fuel tank 2 tails off, also can be supplied to petrolift 1, stably fuel supplying reliably.And, owing to can increase the amount of the effective fuel in the fuel tank 2, so, can be with the further miniaturization of fuel tank.
And, adopting under the situation of electric brush motor as motor part M, because the wearing and tearing powder of brush can not be trapped in the motor part M, can be discharged to fuel tank 2 sides together with fuel, so, can further improve durability effectively.
In addition, self-evident, the present invention is not limited to aforementioned form of implementation; As exhaust gear, except that the such pressure regulation device of aforementioned first kind of form of implementation, also can ventilation valve (bleed valve) be set in pump portion; In this case, arrive predefined pressure, discharge the fuel of motor part through the pressure in the petrolift; With the fuel of said discharge together, can discharge the air in the motor part.
And then, also can in this case, can extract the air in the fuel tank out at the through hole inside and outside formation on the lateral bracket on the formation motor part connects motor part.
In addition, can utilize brushless type motor to constitute motor part, in this case, the fuel of motor part side can not stagnated yet, and produces fuel stream, can with the discharge of carrying out air together of returning of fuel.
Utilize possibility in the industry
The present invention is useful for the petrolift that carries on vehicles such as two-wheeled motor vehicle, owing to there is no need in yoke, to form fuel flow path, and then; Fuel discharge portion constitutes towards the below of fuel tank; Can shorten the pipe arrangement that leads to engine side, so, the pressure loss can be reduced; Not only can be with the petrolift compactness, and can be with the fuel supply device compactness.
In addition, owing to pressure regulation device is set in motor part, so, can always make it to be under the liquid atmosphere, can improve the durability of petrolift.
Claims (13)
1. a petrolift is characterized in that, the pump portion that in utilizing, is contained in lower housing portion with in the motor part that is contained in housing top and is used for driven pump portion constitute when being arranged on the petrolift on the fuel tank base,
Said housing is equipped with: yoke cylindraceous; The last lateral bracket of ring-type, said outer periphery portion of going up lateral bracket holds back and receives on the upside end difference that forms on the tube end face of the upper end portion of said yoke, saidly goes up the upper end portion that lateral bracket constitutes housing; The lower bracket of ring-type, said lower bracket is fixed on the underpart of yoke; Pump bracket, the outer periphery of said pump bracket are held back to connect and are installed on the downside end difference that is formed on the yoke, and the underpart of said pump bracket formation housing,
The said recessed bearing portion that is arranged at the axis central part of lateral bracket on this of lateral bracket utilization of going up can rotate freely the upper end that ground axle suspension constitutes the armature shaft in the armature of said motor part,
The through hole of the axis central part that is opened in said lower bracket is run through in the underpart of said armature shaft, but by the bearing free rotary ground supporting that is configured on this through hole,
On the lower surface of said lower bracket, form the recess of lower opening, more lean on the outer periphery portion of outside diameter to collide, between said lower bracket and said pump bracket, form pump chamber through making the said pump bracket and the said recess of ratio of said lower bracket,
At said outside diameter, become the lower bracket side ring shape recess of fuel flow path with the blade part subtend of impeller ground, simultaneously; Offer motor-side discharge portion, said motor-side discharge portion is communicated with this lower bracket side ring shape recess and connects at above-below direction, with being communicated with to get up between said motor part and the said pump portion; At the upper surface of said pump bracket, be formed be projected in the said pump chamber, with recess with the underpart loose fit of the said armature shaft of the said impeller of state support that prevents to rotate, simultaneously; Become the pump bracket side ring shape recess of fuel flow path with the blade part subtend of said impeller ground; And then, be formed on the poroid fuel suction portion of tube that on above-below direction, connects under the state that is communicated with said pump bracket side ring shape recess and suck fuel, at the circumferential position place different with this fuel suction portion; Form the poroid fuel discharge portion of tube; Said fuel discharge portion connects at above-below direction with the state that is communicated with said pump bracket side ring shape recess, and, outstanding downwards; Fuel is discharged to the outside
Motor part side at said housing is provided with exhaust gear.
2. petrolift as claimed in claim 1 is characterized in that exhaust gear is formed at the upper-end surface of housing.
3. according to claim 1 or claim 2 petrolift is characterized in that, exhaust gear is by according to the pressure that reaches regulation the pressure regulation device of the inside and outside opening of housing being constituted.
4. according to claim 1 or claim 2 petrolift is characterized in that exhaust gear is to be made up of the through hole that is formed on the housing.
5. according to claim 1 or claim 2 petrolift; It is characterized in that, petrolift is bearing in the fuel tank, on this pump stay, form fuel supplies via the pump stay; Said fuel supplies is communicated with fuel tank; Be positioned at the position of more leaning on the below than fuel tank base, store fuel, and give suction portion supply of fuel.
6. petrolift as claimed in claim 3; It is characterized in that, petrolift is bearing in the fuel tank, on this pump stay, form fuel supplies via the pump stay; Said fuel supplies is communicated with fuel tank; Be positioned at the position of more leaning on the below than fuel tank base, store fuel, and give suction portion supply of fuel.
7. petrolift as claimed in claim 4; It is characterized in that, petrolift is bearing in the fuel tank, on this pump stay, form fuel supplies via the pump stay; Said fuel supplies is communicated with fuel tank; Be positioned at the position of more leaning on the below than fuel tank base, store fuel, and give suction portion supply of fuel.
8. according to claim 1 or claim 2 petrolift is characterized in that motor part is made up of the motor of electric brush type.
9. petrolift as claimed in claim 3 is characterized in that motor part is made up of the motor of electric brush type.
10. petrolift as claimed in claim 4 is characterized in that motor part is made up of the motor of electric brush type.
11. petrolift as claimed in claim 5 is characterized in that, motor part is made up of the motor of electric brush type.
12. petrolift as claimed in claim 6 is characterized in that, motor part is made up of the motor of electric brush type.
13. petrolift as claimed in claim 7 is characterized in that, motor part is made up of the motor of electric brush type.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005197019 | 2005-07-06 | ||
| JP197019/2005 | 2005-07-06 | ||
| PCT/JP2006/313415 WO2007004677A1 (en) | 2005-07-06 | 2006-07-05 | Fuel pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101213362A CN101213362A (en) | 2008-07-02 |
| CN101213362B true CN101213362B (en) | 2012-06-27 |
Family
ID=37604536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800238738A Expired - Fee Related CN101213362B (en) | 2005-07-06 | 2006-07-05 | Fuel pump |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4939413B2 (en) |
| CN (1) | CN101213362B (en) |
| BR (1) | BRPI0612098B1 (en) |
| WO (1) | WO2007004677A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5939216B2 (en) * | 2013-08-30 | 2016-06-22 | 株式会社デンソー | Fuel pump and control method thereof |
| JP6804608B1 (en) * | 2019-10-08 | 2020-12-23 | 三菱電機株式会社 | Fuel supply device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3583833A (en) * | 1969-07-16 | 1971-06-08 | Lear Siegler Inc | Motor driven pump |
| CN1178863A (en) * | 1996-10-04 | 1998-04-15 | 本田技研工业株式会社 | Diaphragm fuel pump |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH048761A (en) * | 1990-04-27 | 1992-01-13 | Mitsubishi Gas Chem Co Inc | Polycarbonate resin composition |
| JPH0427157U (en) * | 1990-06-29 | 1992-03-04 | ||
| JP2845099B2 (en) * | 1993-09-10 | 1999-01-13 | 三菱自動車工業株式会社 | Fuel supply device for internal combustion engine |
| JP3213465B2 (en) * | 1993-11-19 | 2001-10-02 | 株式会社ミツバ | Fuel supply pump |
| JP3909486B2 (en) * | 2001-04-09 | 2007-04-25 | 株式会社ケーヒン | Fuel supply device |
| JP2002303217A (en) * | 2001-04-09 | 2002-10-18 | Keihin Corp | Fuel supply system |
| JP2004138004A (en) * | 2002-10-18 | 2004-05-13 | Keihin Corp | Fueling module for engine |
| JP2006037870A (en) * | 2004-07-28 | 2006-02-09 | Aisan Ind Co Ltd | Motor pump and fuel supply system equipped with motor pump |
-
2006
- 2006-07-05 JP JP2007524094A patent/JP4939413B2/en not_active Expired - Fee Related
- 2006-07-05 WO PCT/JP2006/313415 patent/WO2007004677A1/en active Application Filing
- 2006-07-05 BR BRPI0612098A patent/BRPI0612098B1/en not_active IP Right Cessation
- 2006-07-05 CN CN2006800238738A patent/CN101213362B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3583833A (en) * | 1969-07-16 | 1971-06-08 | Lear Siegler Inc | Motor driven pump |
| CN1178863A (en) * | 1996-10-04 | 1998-04-15 | 本田技研工业株式会社 | Diaphragm fuel pump |
Non-Patent Citations (4)
| Title |
|---|
| JP平4-27157U 1992.03.04 |
| JP特开2002-303217A 2002.10.18 |
| JP特开2002-303219A 2002.10.18 |
| 同上. |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0612098A2 (en) | 2011-01-04 |
| WO2007004677A1 (en) | 2007-01-11 |
| CN101213362A (en) | 2008-07-02 |
| JP4939413B2 (en) | 2012-05-23 |
| BRPI0612098B1 (en) | 2018-12-11 |
| JPWO2007004677A1 (en) | 2009-01-29 |
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