CN105317602B - External fuel oil pump assembly - Google Patents
External fuel oil pump assembly Download PDFInfo
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- CN105317602B CN105317602B CN201510355843.8A CN201510355843A CN105317602B CN 105317602 B CN105317602 B CN 105317602B CN 201510355843 A CN201510355843 A CN 201510355843A CN 105317602 B CN105317602 B CN 105317602B
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- oil
- fuel
- fuel oil
- upper cavity
- flowline
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Abstract
The present invention relates to liquid transportation art, more particularly, to a kind of external fuel oil pump assembly for motorcycle fuel conveying.By being tightly connected the associated pipes such as fuel pump into an assembly, and fuel oil is made to be filled in the lower chamber of assembly, high pressure oil area being formed in upper cavity by fuel pump, finally realizes the exteriorization of entire assembly.Assembly tool is effectively avoided in fuel oil transmission process because of the fuel oil turbulent flow phenomenon caused by gas and the flow resistance in reduction flowline.Contribute to the heat convection for generating fuel pump uniformly and increase the surface area of heat dissipation.It can ensure that the compression shock variation range of centrifugal pump during the work time is stablized, improve the service life of fuel pump.It is low to the fuel oil ownership requirement in fuel tank, it dismounts and easy to maintain.
Description
Technical field
The present invention relates to liquid transportation arts, are pumped more particularly, to a kind of external fuel oil for motorcycle fuel conveying
Assembly.
Background technology
China Patent Publication No. CN101865057B, publication date on December 28th, 2011, entitled one kind of innovation and creation
Electric fuel pump assembly, that application discloses a kind of fuel pumps being built in fuel tank.Its shortcoming is to the oil in fuel tank
Amount and oil level have certain requirement, and need to set complicated installation fixed structure in fuel tank.
Fuel pump is that vapour rubs the technical term of accessory industry, is one of basic composition of electric jet vehicle fuel injection system.Mesh
The fuel pump of preceding motorcycle is set in fuel tank more, and the fuel oil in fuel tank is transported in engine.Effect be fuel oil from
It is transported in fuel feed pump after suction, pressurization in fuel tank and certain fuel pressure is established in fuel pressure regulator cooperation.Fuel oil
The maximum pump oil pressure dependence of pump is in the standard of pressure restrictor, if fuel pump pressure is limited more than predetermined pressure, pressure limit
Device, which can open bypass, makes fuel oil flow back to fuel pump entrance.
Invention content
The purpose of the present invention is to provide one kind is easy for installation, and to fuel level in tank almost without desired external fuel oil
Pump assembly.It includes：One ontology is provided with mutually independent upper cavity and lower chamber in the ontology.The lower chamber is equipped with
One oil inlet pipe and an oil return pipe, the upper cavity are equipped with a flowline, and the flowline is connected with filtering in upper cavity interior sealing
Device two.
One centrifugal pump, whole is fixedly installed in lower chamber, and oil inlet end is provided on centrifugal pump, the oil inlet end
It is connected with lower chamber.The oil inlet end is equipped with filter one, and oil outlet end, the oil outlet end and epicoele are additionally provided on centrifugal pump
Body connects, and gas vent is additionally provided on the centrifugal pump.
One check valve, the check valve are set in the flowline, and the check valve is used to prevent the combustion in flowline
Oil is back in upper cavity.
Be provided with bypass on the flowline, the connecting pin of the bypass and flowline be located at check valve and upper cavity it
Between.One pressure regulator valve is tightly connected between the input terminal of the pressure regulator valve and the bypass.The output terminal of the pressure regulator valve passes through pipe
The Lu Yiyu oil returns seal of tube connects；The gas vent between pipeline two and the oil return pipe by connecting.
It is further improved to, passes through hermetic terminal between the power cord of the centrifugal pump and described external plug
Connection.The hermetic terminal includes mounting hole, wire connection terminal, metal insert, is electrically connected between the metal insert and plug.
One end of the wire connection terminal is connected with metal insert, is electrically connected between the other end and centrifugal pump.Outside the wire connection terminal
Edge is equipped with annular pawl, and sealing ring one is provided between the wire connection terminal and mounting hole, passes through annular pawl and mounting hole
Between interference fit provide fastening force so that one deformable seal of sealing ring.
Further be improved to, be provided on the ontology and the centrifugal pump between one end of gas vent set it is flexible
Pad, into Special-Shaped Surface, the structure of the Special-Shaped Surface matches the acting surface of the cushion with the shape of each contact position.
It is further improved to, the pipeline one and two connectors that pipeline two is three-way pipe, the third of the three-way pipe
A connector is penetrated through with the oil return seal of tube.
It is further improved to, sealing ring two, the pressure regulator valve and pipeline one is provided between the pressure regulator valve and bypass
Between be provided with sealing ring three.
It is further improved to, is sealed between the three-way pipe and oil return pipe by being interference fitted.
It is further improved to, the check valve is ball valve.
It is further improved to, the filter one and the filter two are all leaf filter.
It is further improved to, mounting hole is provided in the ontology outer rim.
It is further improved to, there is an accommodating section, the both ends in the accommodating section are respectively described in the ontology
Upper cavity and the lower chamber, partition board is provided between the upper cavity and lower chamber.
The beneficial effects of the present invention are：(1) pipeline two can first discharge the air in centrifugal pump from oil return pipe, can be with
The effective flowing resistance avoided in fuel oil transmission process because of the fuel oil turbulent flow phenomenon caused by gas and in reduction flowline
Power；(2) fuel oil can realize sufficient contact by being entered via oil inlet pipe in lower chamber, contribute to generate fuel pump
Heat convection is uniform and increases the surface area of heat dissipation；(3) under engine idle conditions when, by that can will go out after bypassing pressure regulation
Fuel oil in oil pipe flows back to fuel tank through oil return pipe, it is ensured that the compression shock variation range of centrifugal pump during the work time is steady
It is fixed, improve the service life of fuel pump；(4) it is low to the fuel oil ownership requirement in fuel tank, it dismounts and easy to maintain.
Description of the drawings
Fig. 1 is the profile outline of one embodiment of external fuel oil pump assembly of the present invention；
Fig. 2 is the structure sectional view of one embodiment of external fuel oil pump assembly of the present invention；
Fig. 3 is the internal structure schematic diagram of one embodiment of external fuel oil pump assembly of the present invention；
Fig. 4 is the oil inlet end structure diagram of the centrifugal pump in fuel pump shown in FIG. 1；
Fig. 5 is the structure diagram of the sealed connecting terminal of the centrifugal pump in fuel pump shown in FIG. 1.
Reference sign：
10- ontologies, 11- partition boards, 12- house section, 122- upper cavities, 124- lower chambers, 13- oil inlet pipes, 14- oil returns
Pipe, 15- flowlines, 152- check valves, 154- bypasses, 16- plugs, 17- mounting holes, 20- centrifugal pumps, 21- oil inlet ends, 22-
Filter one, 23- oil outlet ends, 24- filters two, 25- gas vents, 26- power cords, 27- hermetic terminals, 272- mounting holes,
274- wire connection terminals, 276- metal inserts, 277- annular pawls, 278- sealing rings one, 30- pressure regulator valves, 32- pipelines one, 34-
Pipeline two, 35- sealing rings two, 36- sealing rings three, 40- cushions.
Specific embodiment
Below against attached drawing, by the description of the embodiment, to each structure involved in the specific embodiment of the present invention
The works such as mutual alignment and connection relation, the effect of each section and operation principle between the shape of part, construction, each section are further
Detailed description.
As shown in Figure 1, the external fuel oil pump assembly is made of upper end cover, bottom end cover, staving sealed connection.Wherein up and down
It is fastened by bolts between end cap and staving.Upper and lower end cap and staving together constitute the ontology 10 of fuel oil pump assembly, ontology 10
Inside is formed with accommodating section 12 for setting various elements.Partition board 11 is provided in accommodating section 12, which will hold
It puts section 12 and is divided into the upper cavity 122 of relative closure and lower chamber 124.13 He of an oil inlet pipe is equipped on the lower chamber 124
One oil return pipe 14 is equipped with a flowline 15 on the upper cavity 122；Outside ontology 10 it is integrated be provided with plug 16 for
Assembly in-line power.
As shown in Figure 2,3, a centrifugal pump 20 is provided in lower chamber 124, whole is fixedly installed on lower chamber 124
It is interior, and the bottom of centrifugal pump 20 is provided with oil inlet end 21.The oil inlet end 21 is penetrated through with lower chamber 124, is sealed on oil inlet end 21
Leaf filter 1 is connected with, fuel oil enters by oil inlet pipe 13 and fills entire lower chamber 124, then passes through plate-type filtering
Through being entered in centrifugal pump 20 by oil inlet end 21 after the quick impurity filtered out in fuel oil of device 1.
In order to make the compact-sized of assembly, the whole trend and the axial direction of centrifugal pump 20 of the leaf filter 1 are put down
Row.The top of centrifugal pump 20 is provided with oil outlet end 23, which passes through partition board 11 and is sealed with upper cavity 122 and penetrated through,
So that the fuel oil via centrifugal pump 20 forms high pressure fuel area in upper cavity 122.Then fuel oil is made to pass through flowline 15 to hair
Motivation fuel feeding, in order to avoid the fuel oil for being supplied to engine contains impurity, so flowline 15 is connected in 122 interior sealing of upper cavity
Leaf filter 2 24.Due to carrying out fuel delivery using centrifugal pump 20, so being equipped with to arrange on the bottom of centrifugal pump 20
The gas vent 25 of air in sky pump.
When centrifugal pump 20 is stopped, due to the oil pressure in flowline 15 can be higher than upper cavity 122 in oil pressure, so
The phenomenon that fuel oil is flow backwards can be generated.In order to prevent in the generation of such case, check valve 152 is provided on flowline 15, it should
Check valve 152 is hemispheric ball valve, and piston rod is fixedly connected in one end of ball valve.Simultaneously in order to prevent since engine exists
Fuel demand is reduced under idling mode, causes oil pressure in flowline 15 and upper cavity 122 excessively high to centrifugal pump 20 and entire total
Into damaging.The bypass of pressure release is sealedly connected on pipeline on flowline 15 between check valve 152 and upper cavity 122
154。
The bypass 154 is set along the direction for being directed toward oil return pipe 14, is additionally provided with pressure regulator valve 30 in bypass 154, the tune
It is sealed connected together between the input terminal of pressure valve 30 and bypass 154 by the fastening of sealing ring 2 35.The output terminal of pressure regulator valve 30
It is sealed connected together by sealing ring 3 35 and pipeline 1, and sealed connection makes side between pipeline 1 and oil return pipe 14
The fuel oil that road 154 is let out is input to by oil return pipe 14 in fuel tank.Due to the oil pressure in the bypass 154 and pipeline 1 of pressure release compared with
Greatly, so needing to ensure that the fuel oil completely and in lower chamber 122 separates by stringent sealing.
As shown in Figure 3,4, the bottom of centrifugal pump 20 is provided with gas vent 25, the air of the gas vent 25 discharge is in cavity of resorption
It easily mixes with fuel oil in body 124 and causes and contain air in oil circuit, cause flow resistance increase, even can also cause burning not
Uniformly etc., damage is be easy to cause to engine etc..So being mounted with a three-way pipe in the present embodiment, the one of the three-way pipe is logical
Pipe is pipeline 1, and another bipass is set in together with the interference fit of oil return pipe 14.Its three-way pipe connects with the sealing of gas vent 25
It is connected together.High pressure oil return and air can guide fuel tank by the three-way pipe in this way.
As shown in figure 5, in upper cavity 122, centrifuge and pass through sealed end between 20 power cord 26 and the plug 16
Son 17 connects；The hermetic terminal 17 include mounting hole 272, wire connection terminal 274, metal insert 276, wherein metal insert 276 with
It is electrically connected between plug 16, one end of the wire connection terminal 274 is connected with metal insert 276, the other end and centrifugal pump
Be electrically connected between 20,274 outer rim of wire connection terminal is equipped with annular pawl 277, the wire connection terminal 274 and mounting hole 272 it
Between be provided with sealing ring 1, by the interference fit between annular pawl 277 and mounting hole 272 providing fastening force so that
One 278 deformable seal of sealing ring.
As shown in Figure 2,3, 4, in order to which the pipeline 2 34 in threeway is made closely to connect and seal with gas vent 25, in ontology
Cushion 40 is provided between 10 and the bottom of centrifugal pump 20, which is arranged to the side that 20 bottom of centrifugal pump contacts
With special-shaped step surface, each step surface is equal apart from the distance between the stress surface of 20 bottom of centrifugal pump and pipeline 2 34, in this way may be used
Effectively to ensure that centrifugal pump 20 at work being capable of stable operation, low noise.And pipeline 2 34 and gas vent can also be made
It is in close contact between 25 and realizes sealed connection.
Claims (7)
1. external fuel oil pump assembly, including：
One ontology (10), the ontology (10) is interior to have an accommodating section (12), and the both ends of the accommodating section (12) are respectively
Upper cavity (122) and lower chamber (124) are provided with partition board (11), epicoele between the upper cavity (122) and lower chamber (124)
Independently of each other, which is equipped with an oil inlet pipe (13) and an oil return pipe (14) for body (122) and lower chamber (124), should
Upper cavity (122) is equipped with a flowline (15), and the flowline (15) is connected with plate-type filtering in upper cavity (122) interior sealing
Device two (24)；
One centrifugal pump (20), whole is fixedly installed in lower chamber (124), and be provided with oil inlet end on centrifugal pump (20)
(21), the oil inlet end (21) connects with lower chamber (124), and the oil inlet end (21) is equipped with leaf filter one (22), from
Oil outlet end (23) is additionally provided in heart pump (20), the oil outlet end (23) connects with upper cavity (122), on the centrifugal pump (20) also
Equipped with gas vent (25)；
One check valve (152), the check valve (152) are set in the flowline (15), and the check valve (152) is for hindering
Only in the fuel flow returns to upper cavity (122) in flowline (15)；
It is characterized in that：
Bypass (154) is provided on the flowline (15), the bypass (154) and the connecting pin of flowline (15) are located at unidirectionally
Between valve (152) and upper cavity (122)；
One pressure regulator valve (30) is tightly connected between the input terminal of the pressure regulator valve (30) and the bypass (154)；The pressure regulator valve
(30) output terminal is connected by pipeline one (32) with oil return pipe (14) sealing；The gas vent (25) by pipeline two (34) with
It is connected between the oil return pipe (14), the pipeline one (32) and two connectors that pipeline two (34) is three-way pipe, the threeway
The third connector of pipe is penetrated through with oil return pipe (14) sealing.
2. a kind of external fuel oil pump assembly as described in claim 1, it is characterised in that：The power cord of the centrifugal pump (20)
(26) it is connect between the outer plug (16) of the ontology (10) by hermetic terminal (27)；The hermetic terminal (27) includes
Mounting hole (272), wire connection terminal (274), metal insert (276) are electrically connected between the metal insert (276) and plug (16)
It connects, one end of the wire connection terminal (274) is connected with metal insert (276), is electrically connected between the other end and centrifugal pump (20)
Connect, wire connection terminal (274) outer rim is equipped with annular pawl (277), the wire connection terminal (274) and mounting hole (272) it
Between be provided with sealing ring one (278), provide fastening by the interference fit between annular pawl (277) and mounting hole (272)
Power is so that sealing ring one (278) deformable seal.
3. a kind of external fuel oil pump assembly as claimed in claim 1 or 2, it is characterised in that：The ontology (10) and described
It is provided on centrifugal pump (20) between one end of gas vent (25) and is provided with cushion (40), the acting surface of the cushion (40)
Into Special-Shaped Surface, the structure of the Special-Shaped Surface is matched with the shape of each contact position.
4. a kind of external fuel oil pump assembly as claimed in claim 3, it is characterised in that：The pressure regulator valve (30) and bypass
(154) sealing ring two (35) is provided between, sealing ring three (36) is provided between the pressure regulator valve (30) and pipeline one (32).
5. a kind of external fuel oil pump assembly as claimed in claim 4, it is characterised in that：The three-way pipe and oil return pipe (14)
Between be sealed by being interference fitted.
6. a kind of external fuel oil pump assembly as claimed in claim 5, it is characterised in that：The check valve (152) is ball
Valve.
7. a kind of external fuel oil pump assembly as claimed in claim 3, it is characterised in that：It is set in ontology (10) outer rim
There is mounting hole (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510355843.8A CN105317602B (en) | 2015-06-25 | 2015-06-25 | External fuel oil pump assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510355843.8A CN105317602B (en) | 2015-06-25 | 2015-06-25 | External fuel oil pump assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105317602A CN105317602A (en) | 2016-02-10 |
| CN105317602B true CN105317602B (en) | 2018-06-12 |
Family
ID=55245727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510355843.8A Active CN105317602B (en) | 2015-06-25 | 2015-06-25 | External fuel oil pump assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105317602B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757249A (en) * | 2018-04-18 | 2018-11-06 | 宁波洛卡特汽车零部件有限公司 | A kind of safe small-sized external fuel oil pump |
| CN113847176A (en) * | 2021-08-20 | 2021-12-28 | 重庆平山泰凯化油器有限公司 | External oil pump of motorcycle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4013053A (en) * | 1975-05-02 | 1977-03-22 | Stewart-Warner Corporation | Fuel pump |
| CN2813939Y (en) * | 2005-07-26 | 2006-09-06 | 曹宝军 | Electric fuel-oil pump |
| CN101054941A (en) * | 2007-05-23 | 2007-10-17 | 力帆实业(集团)有限公司 | Enclosed oil pump assembly for motorcycle |
| CN101077724A (en) * | 2007-06-28 | 2007-11-28 | 联合汽车电子有限公司 | Fuel-feed system for motorcycle |
| CN202789254U (en) * | 2012-10-12 | 2013-03-13 | 众恒汽车部件有限公司 | External fuel pump for motorcycle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4324532A (en) * | 1980-01-24 | 1982-04-13 | Trw Inc. | Cartridge pump |
-
2015
- 2015-06-25 CN CN201510355843.8A patent/CN105317602B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4013053A (en) * | 1975-05-02 | 1977-03-22 | Stewart-Warner Corporation | Fuel pump |
| CN2813939Y (en) * | 2005-07-26 | 2006-09-06 | 曹宝军 | Electric fuel-oil pump |
| CN101054941A (en) * | 2007-05-23 | 2007-10-17 | 力帆实业(集团)有限公司 | Enclosed oil pump assembly for motorcycle |
| CN101077724A (en) * | 2007-06-28 | 2007-11-28 | 联合汽车电子有限公司 | Fuel-feed system for motorcycle |
| CN202789254U (en) * | 2012-10-12 | 2013-03-13 | 众恒汽车部件有限公司 | External fuel pump for motorcycle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105317602A (en) | 2016-02-10 |
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