CN102108922B - Electric fuel pump - Google Patents
Electric fuel pump Download PDFInfo
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- CN102108922B CN102108922B CN 200910217265 CN200910217265A CN102108922B CN 102108922 B CN102108922 B CN 102108922B CN 200910217265 CN200910217265 CN 200910217265 CN 200910217265 A CN200910217265 A CN 200910217265A CN 102108922 B CN102108922 B CN 102108922B
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Abstract
The invention provides an electric fuel pump, which comprises a motor, a pump body and a shell, wherein the pump body comprises a primary fuel suction system and a secondary fuel suction system; the primary fuel suction system consists of a primary fuel inlet plate and an impeller; the secondary fuel suction system consists of an fuel outlet plate, a secondary fuel suction plate and a pump base; the primary fuel suction system is fixed with the secondary fuel suction system through a riveting ring; the fuel outlet of the primary fuel suction system is connected with a corrugated pipe which is connected to a fuel pump assembly bottom tank and a fuel filter through a three-way pipe; and the corrugated pipe is further connected to the fuel suction port of the secondary fuel suction system of the pump body through the fuel filter. Two stages of fuel suction systems are adopted, the flow of the fuel pump is divided, the fuel suction speed is improved, and the vibration and noise of the fuel pump are reduced; moreover, the fuel filter is arranged outside a fuel tank of an automobile and is convenient to clean and replace.
Description
Technical field
The present invention relates to a kind of auto parts and components, especially a kind of automobile electric fuel pump.
Background technique
Electric fuel punp is the core of fuel oil pump assembly, and it is responsible for automotive fuel oil system the fuel oil with certain pressure is provided.Present automobile electric fuel pump is to drive pump housing High Rotation Speed by permanent magnet motor fuel from fuel tank is sucked, and the inside of the electric fuel punp of flowing through extrudes fuel oil again, for the oil-fired system fuel feeding.
The electric fuel punp of prior art only has the one-level oil absorption system usually.By electric machine rotation, drive fuel pump the filler opening of fuel oil at the bottom of the pump is drawn into the impeller of fuel pump or the cavity at gear place during work, after impeller or gear pressurization, discharge.Prior art only has the electric fuel punp of one-level oil absorption system, because the oil pump flow pulsation is large, so that fuel pump vibration and noise are all larger.
In the prior art, fuel oil filter screen and electric fuel punp are installed on the interior drain pan of automotive oil tank together, with fuel tank cap and fuel tank cap pad it are pressed in the fuel tank tightly again, like this fuel oil filter screen are blocked, and change very difficult.
Summary of the invention
The technical problem to be solved in the present invention has two, and the firstth, prior art only has the electric fuel punp of one-level oil absorption system, because the oil pump flow pulsation is large, so that fuel pump vibration and noise are larger; The secondth, the fuel oil filter screen of prior art is installed in the fuel tank, changes difficulty.In order to solve the problems of the technologies described above, the invention provides a kind of electric fuel punp with two-stage oil absorption system, so that the fuel pump flow is steady, noise is less; And fuel filter is arranged on outside the automotive oil tank, and it is convenient to change.
In order to achieve the above object, the technical solution adopted in the present invention is, a kind of electric fuel punp is provided, and it comprises motor, the pump housing, shell, and described motor, the pump housing are arranged in the shell of fuel pump; The described pump housing comprises elementary oil absorption system and secondary oil absorption system; Described elementary oil absorption system comprises elementary oil-feed plate, impeller; The fixing assembling of the main shaft of described impeller and fuel pump rotor; Described secondary oil absorption system comprises oiled-plate method, secondary oil suction plate, pump-foot; Describedly go out between oiled-plate method and the secondary oil suction plate to be provided with pump housing inner ring, pump housing outer ring, described pump housing inner ring and fuel pump rotor are assembled together, and are provided with roller between described pump housing inner ring and the pump housing outer ring; Described secondary oil suction plate is by the gap of main reinforcement assembling of bearing and fuel pump rotor; Leave the gap between the main shaft of described pump-foot and fuel pump rotor; Describedly go out oiled-plate method, pump housing outer ring, secondary oil suction plate and be fixed in turn on the pump-foot by screw; Elementary oil-feed plate, the impeller of described elementary oil absorption system are fixed on the described pump-foot by the riveted circle; Be provided with elementary oil discharge passage and two-stage oil feeding passage on the described pump-foot; Elementary oil discharge passage on the oil outlet of described elementary oil absorption system and the described pump-foot is communicated with, and the elementary oil discharge passage on the described pump-foot is connected with bellows, and described bellows is connected to the two-stage oil feeding passage on the pump-foot.
Further, described bellows is connected with three-way pipe; One end of described three-way pipe connects the end bucket of fuel oil pump assembly, and the other end of three-way pipe is connected with fuel filter; The other end of described bellows is connected to two-stage oil feeding passage on the pump-foot by fuel filter.
Further, described fuel filter is arranged on outside the fuel tank of automobile.
Working principle of the present invention is, after the electric fuel punp energising, and the pump housing inner ring High Rotation Speed of the impeller of the elementary oil absorption system of the driven by motor pump housing, secondary oil absorption system; Fuel oil just enters the lower oil cavitie that is formed by elementary oil-feed plate and pump-foot from fuel tank; Through the impeller pressurization, the elementary oil discharge passage of fuel oil from pump-foot is transported to the bellows; When fuel oil was flowed through three-way pipe, a part of fuel oil flow back into bucket at the bottom of the fuel oil pump assembly, and another part fuel oil flow into and is connected in the outer fuel filter of automotive oil tank; Filter through fuel filter, by the two-stage oil feeding passage of pump-foot, flow in the upper oil cavitie that is formed by pump-foot and secondary oil suction plate; Through the pressurization of pump housing inner ring, fuel pump goes out from fuel-displaced plate current, finishes oil pumping process one time.
Among the present invention, go out oiled-plate method and secondary oil suction plate can adopt stupalith, reduced like this wearing and tearing of pump housing inner ring, prolonged the working life of fuel pump.Among the present invention, some fuel oil flows back to bucket at the bottom of the fuel oil pump assembly all the time, and this part fuel oil has played jet action, allows bucket remains full oil at the bottom of the fuel oil pump assembly; Automobile is when climbing, and fuel pump just can flow to the automobile oil supply system from bucket oil suction at the bottom of the fuel oil pump assembly, guarantees the stable operation of automobile.In addition, fuel oil so that fuel oil is purer, has guaranteed the quality of fuel oil through the filtration of filter cleaner; And through the pressurization of impeller, the fuel oil that enters upper oil cavitie has certain pressure, has improved the speed of for the second time oil suction.Fuel filter of the present invention is arranged on outside the automotive oil tank, changes use also very convenient.
The present invention compared with prior art, its effect is actively and significantly.By adopting the two-stage oil absorption system, decomposed oil pump flow, improved speed of oil absorption, reduced vibration and the noise of fuel pump; Its fuel filter also is arranged on outside the automotive oil tank, provides convenience for cleaned and changed.
Description of drawings
Fig. 1 is the structural representation of electric fuel punp of the present invention;
Fig. 2 is the pump body structure schematic diagram of electric fuel punp of the present invention.
Embodiment
The present invention is described further below in conjunction with accompanying drawing.
Be illustrated in figure 1 as electric fuel punp structural representation of the present invention.The present invention includes motor and the pump housing, the pump housing and motor all are arranged in the shell of fuel pump.
Be illustrated in figure 2 as pump body structure schematic diagram of the present invention, elementary oil suction plate 1 and impeller 2 form elementary oil absorption system, and impeller 2 fixedly is assemblied on the main shaft of rotor 15; Elementary oil suction plate 1 and impeller 2 by riveted circle 10 riveteds on pump-foot 5.Go out oiled-plate method 3, pump housing inner ring 6, pump housing outer ring 7, secondary oil suction plate 4 and pump-foot 5 and consist of the secondary oil absorption system.Pump housing inner ring 6 and rotor 15 are assembled together, and are provided with roller 9 between pump housing inner ring 6 and the pump housing outer ring 7; Secondary oil suction plate 4 is by the main shaft 16 gaps assembling of graphite bearing 14 and rotor 15; Going out oiled-plate method 3, pump housing outer ring 7, secondary oil suction plate 4 is fixed on the pump-foot 5 in turn by screw 8.
As shown in Figure 1, leave the gap between the main shaft 16 of pump-foot 5 and rotor 15, be provided with elementary oil discharge passage 11 and two-stage oil feeding passage 12 on the pump-foot 5; The oil outlet of elementary oil discharge passage 11 and elementary oil absorption system is communicated with; Be connected with bellows 13 on the elementary oil discharge passage 11, bellows 13 is connected with three-way pipe, one end of three-way pipe connects the end bucket of fuel oil pump assembly, and the other end of three-way pipe is connected with fuel filter, and bellows 13 is connected on the two-stage oil feeding passage 12 by fuel filter.
In the working procedure, after the electric fuel punp energising, rotor 15 drives the impeller 2 of the elementary oil absorption system of the pump housing, pump housing inner ring 6 High Rotation Speeds of secondary oil absorption system; The turning handle fuel from fuel tank of impeller 2 sucks in the lower oil cavitie that is formed by elementary oil-feed plate 1 and pump-foot 5; Through impeller 2 pressurizations, the elementary oil discharge passage 11 of fuel oil through pump-foot 5 is transported in the bellows 13; When fuel oil was flowed through three-way pipe, a part of fuel oil flow back into bucket at the bottom of the fuel oil pump assembly, and another part fuel oil flow into and is connected in the outer fuel filter of automotive oil tank; Filter through fuel filter, by the two-stage oil feeding passage 12 of pump-foot 5, flow in the upper oil cavitie that is formed by pump-foot and secondary oil suction plate; Through the pressurization of pump housing inner ring 6, fuel pump flows out from going out oiled-plate method 3, finishes oil pumping process one time.
In addition, roller 9 is highly identical with pump housing inner ring 6, and pump housing inner ring 6 is than the axially low 0.01mm in pump housing outer ring 7, radially little 0.02mm so that pump housing inner ring 6 can be in pump housing outer ring 7 interior flexible rotatings; Equally, the external diameter of impeller 2 is than the little 0.5mm of internal diameter of pump-foot 5, and the internal diameter degree of depth of the Thickness Ratio pump-foot 5 of impeller 2 is hanged down 0.2mm.
Claims (2)
1. electric fuel punp, it comprises motor, the pump housing, shell, described motor, the pump housing are arranged in the shell of fuel pump; It is characterized in that, the described pump housing comprises elementary oil absorption system and secondary oil absorption system; Described elementary oil absorption system comprises elementary oil-feed plate, impeller; The fixing assembling of the main shaft of described impeller and fuel pump rotor; Described secondary oil absorption system comprises oiled-plate method, secondary oil suction plate, pump-foot; Describedly go out between oiled-plate method and the secondary oil suction plate to be provided with pump housing inner ring, pump housing outer ring, described pump housing inner ring and fuel pump rotor are assembled together, and are provided with roller between described pump housing inner ring and the pump housing outer ring; Described secondary oil suction plate is by the gap of main reinforcement assembling of bearing and fuel pump rotor; Leave the gap between the main shaft of described pump-foot and fuel pump rotor; Describedly go out oiled-plate method, pump housing outer ring, secondary oil suction plate and be fixed in turn on the pump-foot by screw; Elementary oil-feed plate, the impeller of described elementary oil absorption system are fixed on the described pump-foot by the riveted circle; Be provided with elementary oil discharge passage and two-stage oil feeding passage on the described pump-foot; Elementary oil discharge passage on the oil outlet of described elementary oil absorption system and the described pump-foot is communicated with, and the elementary oil discharge passage on the described pump-foot is connected with bellows, and described bellows is connected to the two-stage oil feeding passage on the pump-foot; Described bellows is connected with three-way pipe; One end of described three-way pipe connects the end bucket of fuel oil pump assembly, and the other end of three-way pipe is connected with fuel filter; Described bellows is connected on the two-stage oil feeding passage by fuel filter.
2. a kind of electric fuel punp as claimed in claim 1, it is characterized in that: described fuel filter is arranged on outside the fuel tank of automobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910217265 CN102108922B (en) | 2009-12-29 | 2009-12-29 | Electric fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910217265 CN102108922B (en) | 2009-12-29 | 2009-12-29 | Electric fuel pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102108922A CN102108922A (en) | 2011-06-29 |
| CN102108922B true CN102108922B (en) | 2013-02-13 |
Family
ID=44173182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910217265 Active CN102108922B (en) | 2009-12-29 | 2009-12-29 | Electric fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102108922B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404187B (en) * | 2018-10-25 | 2024-04-26 | 上海世德子汽车零部件有限公司 | Umbrella-shaped structure filter screen system of electric fuel pump |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2262567A (en) * | 1991-12-20 | 1993-06-23 | Vdo Schindling | Silencing fuel feed apparatus. |
| US5435691A (en) * | 1993-02-13 | 1995-07-25 | Robert Bosch Gmbh | Aggregate for feeding fuel from supply tank to internal combustion engine of motor vehicles |
| CN201568182U (en) * | 2009-12-29 | 2010-09-01 | 上海世德子汽车零部件有限公司 | Electric fuel pump |
-
2009
- 2009-12-29 CN CN 200910217265 patent/CN102108922B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2262567A (en) * | 1991-12-20 | 1993-06-23 | Vdo Schindling | Silencing fuel feed apparatus. |
| US5435691A (en) * | 1993-02-13 | 1995-07-25 | Robert Bosch Gmbh | Aggregate for feeding fuel from supply tank to internal combustion engine of motor vehicles |
| CN201568182U (en) * | 2009-12-29 | 2010-09-01 | 上海世德子汽车零部件有限公司 | Electric fuel pump |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平10-47279A 1998.02.17 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102108922A (en) | 2011-06-29 |
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