CN101213362A - Fuel pump - Google Patents
Fuel pump Download PDFInfo
- Publication number
- CN101213362A CN101213362A CNA2006800238738A CN200680023873A CN101213362A CN 101213362 A CN101213362 A CN 101213362A CN A2006800238738 A CNA2006800238738 A CN A2006800238738A CN 200680023873 A CN200680023873 A CN 200680023873A CN 101213362 A CN101213362 A CN 101213362A
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- China
- Prior art keywords
- fuel
- petrolift
- pump
- fuel tank
- motor part
- 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.)
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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, the petrolift of formula in the base of fuel tank, the case that drives that petrolift is arranged on is arranged under petrolift is immersed in state in the fuel.In this case, the fuel pump structure is, 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, described motor is arranged on commutator on the motor drive shaft, and external power supply is supplied to brush with this commutator sliding contact, revolution motor axle whereby, in such motor part, the 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 from the fuel that petrolift is discharged and start pusher side (patent documentation 2).
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 prior art, the fuel discharge portion is arranged on the motor part side, will be directed under the situation of starting pusher side from the fuel that the fuel discharge portion is discharged, the pipe arrangement that is connected on the fuel discharge portion of upside is directed to the below, is drawn out to the outside of fuel tank.Therefore, lead to and start the pipe arrangement of pusher side elongated, it is big that the pressure loss becomes, for the output that obtains stipulating, not only exist the problem that the output of petrolift must 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 the fuel discharge portion not to be formed on the motor part place of upside and be formed in the pump portion place of downside, shorten the scheme of leading to the pipe arrangement that starts pusher 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 enters the motor part side does not move (stagnation), exists the problem that the air that enters 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 danger under the gas atmosphere so exist the slide part of the commutator that is configured in described top and 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, it is characterized in that, in utilizing, be contained in lower housing portion pump portion and 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, be provided with the fuel suction portion in the fuel suction pump portion and fuel be discharged to the fuel discharge portion of the outside of pump portion, simultaneously, exhaust gear is set in the motor part side of housing.
The invention of scheme 6, in any one, motor part is made 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 and lead to the pipe arrangement that starts pusher side, and, can make 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, supply of fuel to petrolift can be stablized and be carried out reliably to simplified structure on the other hand.
According to scheme 6 described inventions, the wearing and tearing powder and the fuel stream of brush can be discharged from motor part together, make 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, with reference to the accompanying drawings 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 of P of pump portion and motor part M, the described pump P of portion under the state that is installed on the fuel tank of describing later 2, is positioned at the below that becomes fuel tank 2 base 2a sides, described 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 last lateral bracket 4 of ring-type that constitutes the upper end portion of 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 being provided with the commutator segment 6b of a plurality of electric conductivity in the outer circumferential face upper edge of resinous annulus 6a circumferential direction.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, described 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 mutually near and subtend.
And then, the underpart 5d of armature shaft 5a runs through through hole 9a, described 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 by on brush 7, providing external power supply as hereinafter described via commutator segment 6b, whereby, make armature core 5 in the yoke 3 that is formed with magnetic pole, be rotated by permanent magnet 8.
The outer periphery portion of aforementioned lower bracket 9 is configured to the shape of colliding with the below of this lower bracket 9, with the outer periphery portion of the pump bracket 10 of the underpart that constitutes housing of the present invention together, 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 collide formation pump chamber PR between lower bracket 9 and pump bracket 10 by the outer periphery portion of outside diameter by making pump bracket 10 and recess 9c than this lower bracket 9.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, cooperate to run through by key and be bearing on this outstanding underpart 5d with the state that prevents to rotate, 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 motor-side discharge portion 9e, described motor-side discharge portion 9e is communicated with this annular recessed portion 9d and connects at above-below direction, will be 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 portion 10d of tube, described fuel discharge portion 10d 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 portion 10d, this one-way valve 12 includes the valve body 12a and the spherical spool 12c of bottom tube-like, described 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 by the pressure that makes the fuel of discharging from fuel discharge portion 10d, spool 12c opens the through hole 12b of valve body 12a, fuel is discharged to the discharge path of navigation 13g side of describing later.In addition, one-way valve 12 can dispose in fuel discharge portion 10d 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, by valve body 12a displacement upward, reduce the pressure of the fuel of discharging path of navigation 13g side.
On the other hand, offer the through hole 2b of ring-type at the base of aforementioned fuel tank 2 2a, this through hole 2b is configured to be closed by 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 by 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, 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 upward, be integrally formed fixed plate 13d in the upper end portion of these stay sheets 13c to internal diameter lateral bending song.In addition, pump stay unit 13, by 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 and 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 than the base 2a of fuel tank 2 more by the position of below, and is relative to the ground setting 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.
And, relative with pump bracket 10 to the outside diameter position of space bar 14, form highlightedly towards the top relative with the fuel suction 10c of portion to the suction path of navigation 14a of tubular.This suction forms via the through hole 14b and the fuel supplies 13f that are opened on the space bar 14 communicatively with path of navigation 14a, this suction with the outstanding front end of path of navigation 14a by 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, supply the fuel that filters of crossing that is stored in the fuel supplies 13f to the fuel suction 10c of portion via sucking with path of navigation 14a.
And then, at the outside diameter of space bar 14, be positioned at fuel discharge portion 10d with pump bracket 10 relative to the outside diameter at position form to discharge and use through hole 14c.Aforementioned discharge is made of the through hole of up/down perforation space bar 14 with through hole 14c, connects the fuel discharge portion 10d 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 portion 10d 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, form with state with this fuel supplies 13f adjacency, extend to outside diameter from the base side that the 13a of bottom tube-like portion is arranged, in the end of stretching out of this discharge path of navigation 13g, be connected with and come from the pipe arrangement (not shown) of starting pusher 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, via planting the L shaped the first terminal plate 16 on this coupling piece 13h, electrically conductive plate 16a, the second terminal board 16b, be supplied to the brush 7 on the last lateral bracket 4 that is configured in petrolift 1 towards above-below direction.
And then, the petrolift 1 of this form of implementation, on lateral bracket 4 on the formation motor part M, be provided as the pressure regulation device 17 of exhaust gear, reach the pressure of regulation, the fuel in the petrolift 1 is discharged to fuel tank 2 sides by making petrolift 1 interior pressure (hydraulic pressure), adjust the pressure in the fuel tank 1, simultaneously, can with the aforementioned fuel that is discharged from together, extract the air that enters 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, described 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, but, 4d place, bottom land limit at aforementioned shrinkage pool 4c offers through hole 4e, described 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, the described first plate 17c forms the first intercommunicating pore 17b that is communicated with bottom land limit through hole 4e along bottom land limit 4d, the described 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, the bottom land limit through hole 4e and the first intercommunicating pore 17b are opened into connected state, fuel in the petrolift 1 enters 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 fuel in the fuel supplies 13f through the state that filters from fuel tank 2 via the fuel suction 10c of portion.To be formed on the annular recessed portion 10b of the lower bracket annular recessed portion 9d of subtend portion of 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 portion 9e of lateral bracket 9 and the fuel discharge portion 10d of pump bracket 10, and the fuel of process fuel path of navigation 13g is directed to starting pusher 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, get in the process of action at the pump of petrolift P, the pressure height in petrolift 1, than under the big situation of the loading force of the 17g of loading spring mechanism, spool 17f opens, and fuel escapes into the fuel tank side, whereby, adjusts the pressure in the petrolift 1.
At this moment, because under the situation in air enters 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 together expeditiously with fuel.
And then, in this case, be stored in the interior fuel of fuel supplies 13f to move as stream to the position of fuel discharge portion 10d 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, fuel discharge portion 10d via with the fuel supplies 13e of pump stay unit 13 fuel path of navigation 13g in abutting connection with configuration, being directed into motor surveys, therefore, there is no need fuel supply device as prior art, make and will lead to the labyrinth that the pipe arrangement that starts pusher side is drawn with the sealing shape from fuel tank from the fuel discharge portion of petrolift, can be with the fuel supply device compactness.
In this form of implementation that constitutes as mentioned above, 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 and the inner peripheral surface that is arranged on the permanent magnet 8 on the yoke 3 inner peripheral surfaces close state setting mutually of armature 5.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, form fuel suction 10c of portion and fuel discharge portion 10d, 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 3 that is fixed with permanent magnet 8 and armature 5, do not form stream, so, can compactness.In addition,, can shorten and lead to the pipe arrangement that starts pusher side because fuel discharge portion 10d 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 fuel discharge portion 10d is formed on the P of the pump portion side of petrolift 1, on the other hand, will be arranged on motor part M side as the pressure regulation device 17 of exhaust gear, so, arrive the pressure of regulation by the pressure in the petrolift 1, fuel is turned back in the fuel tank 2, adjust the pressure in the petrolift 1, simultaneously, when making aforementioned fuel turn back to fuel tank 2 sides, fuel can not stagnated, and produces motion, whereby, air and the fuel that enters motor part M side can 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 implementing structure 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, the air that can be more effectively will be trapped in the top is discharged, so, can make the petrolift 1 of excellent in te pins of durability.
And then, the petrolift 1 of this form of implementation, be bearing in the fuel tank 2 by the stay sheet 13c of pump stay unit 13 and fixed plate 13d, but, in this case, on pump stay unit 13, be formed with the 13a of bottom tube-like portion, the described through hole 2b that has the 13a of bottom tube-like portion to cover the base 2a of fuel tank 2 hermetically, be positioned at simultaneously than fuel tank base 2a more by position, ground, below, at this fuel supplies of formation 13f is arranged on the 13a of bottom tube-like portion, described 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 be subjected to 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 by the pressure in the petrolift, with the fuel of described 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.
The industrial possibility of utilizing
The present invention is useful for the petrolift that carries on the vehicles such as two-wheeled motor vehicle, because There is no need in yoke, to form fuel flow path, and then the fuel discharge portion is lower towards fuel tank The side consists of, and can shorten and lead to the pipe arrangement that starts pusher side, so, can reduce the pressure loss, Not only can be with the petrolift densification, and can be with the fuel supply device densification.
In addition, owing in motor part pressure regulation device is set, so, can always make part Under liquid atmosphere, can improve the durability of petrolift.
Claims (6)
1. petrolift, it is characterized in that, in utilizing, be contained in lower housing portion pump portion and in the motor part that is contained in housing top and is used for driven pump portion when constituting the petrolift that is arranged on the fuel tank base, be provided with the fuel suction portion in the fuel suction pump portion and fuel be discharged to the fuel discharge portion of the outside of pump portion in the pump portion side of housing, simultaneously, the motor part side at 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. as any one described petrolift in claim 1 or 2, it 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. as any one described petrolift in claim 1 or 2, it is characterized in that exhaust gear is to be made of the through hole that is formed on the housing.
5. as any one described petrolift in the claim 1 to 4, it is characterized in that, via the pump stay petrolift is bearing in the fuel tank, on this pump stay, form fuel supplies, described 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. as any one described petrolift in the claim 1 to 5, it is characterized in that motor part is made 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 true CN101213362A (en) | 2008-07-02 |
| CN101213362B 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105492754A (en) * | 2013-08-30 | 2016-04-13 | 株式会社电装 | Fuel pump and control method therefor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6804608B1 (en) * | 2019-10-08 | 2020-12-23 | 三菱電機株式会社 | Fuel supply device |
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| 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 |
| JP2936470B2 (en) * | 1996-10-04 | 1999-08-23 | 本田技研工業株式会社 | Diaphragm fuel 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
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105492754A (en) * | 2013-08-30 | 2016-04-13 | 株式会社电装 | Fuel pump and control method therefor |
| CN105492754B (en) * | 2013-08-30 | 2019-02-15 | 株式会社电装 | Petrolift and its control method |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0612098A2 (en) | 2011-01-04 |
| WO2007004677A1 (en) | 2007-01-11 |
| JP4939413B2 (en) | 2012-05-23 |
| CN101213362B (en) | 2012-06-27 |
| BRPI0612098B1 (en) | 2018-12-11 |
| JPWO2007004677A1 (en) | 2009-01-29 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20120627 Termination date: 20180705 |