CN205277654U - Electronic fuel pump of doublestage - Google Patents
Electronic fuel pump of doublestage Download PDFInfo
- Publication number
- CN205277654U CN205277654U CN201521109151.7U CN201521109151U CN205277654U CN 205277654 U CN205277654 U CN 205277654U CN 201521109151 U CN201521109151 U CN 201521109151U CN 205277654 U CN205277654 U CN 205277654U
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- China
- Prior art keywords
- oil
- group
- vertical
- assemblage
- twin
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- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model relates to an electronic fuel pump of doublestage, include: the casing assemblage, set firmly in the assemblage that produces oil at casing assemblage top, it is equipped with the shaft hole of producing oil on the assemblage to produce oil, locate the inside armature assemblage of casing assemblage, the top of armature assemblage with shaft hole fixed connection produces oil, and set firmly in the oil feed assemblage of casing assemblage bottom, the oil feed assemblage include first oil absorption mechanism, second oil absorption mechanism and with first oil absorption mechanism with the bearing that second oil absorption mechanism all connects, the bearing with the bottom fixed connection of armature assemblage. The utility model discloses use doublestage oil absorption mechanism, improve fuel oil transportation performance for the relative single -stage of rotational speed of motor reduces, makes fuel pump life improve, effectively reduces fuel pump running noise.
Description
Technical field
This utility model relates to fuel pump, particularly relates to a kind of twin-stage electric fuel punp.
Background technology
Existing fuel pump operation principle: existing motor vehicle diesel fuel pump is mainly single gear fuel pump, the fuel oil conveying of pump and pressure raise when being entirely by pinion rotation, space size conversion between internal-external gear, from oil-in oil suction when space changes from small to big, space from large to small time, by fuel oil from outlet extruding discharge. Oil-feed assembling structure is simple, is made up of internal gear, external gear, pump chamber, pump cover. Relative with pump cover thirty years of age of pump chamber, one cavity of intermediate formation, internal-external gear is located therein. When driven by motor internal gear rotates, internal gear drives external gear to rotate in pump chamber inner chamber, forms transformation space between internal gear and external gear, when changing from small to big in space, is sucked by fuel oil from pump cover oil-in; When space from large to small time, by fuel oil from pump chamber oil-out extruding discharge.
Can there is following defect in actual use in existing fuel pump:
Feeding oil of fuel pump fully relies on internal-external gear spatial alternation to system fuel feeding, and power is low, it is impossible to give the demand meeting system high flow capacity;
The excessive instability of electric current, directly affects electric efficiency on the low side;
Vibration and noise are big: when motor runs under high torque (HT), the square pulsation of motor tooth can increase, and causes noise.
Utility model content
The purpose of this utility model is in that to overcome the defect of prior art, there is provided a kind of twin-stage electric fuel punp, it is possible to solve that the power that existing single gear fuel pump exists is low, can not meet the demand of high flow capacity, electric efficiency is on the low side and vibration and the big problem of noise.
The technical scheme realizing above-mentioned purpose is:
This utility model one twin-stage electric fuel punp, including:
Casing group is stood;
The line of oils that goes out being fixedly arranged on the vertical top of described casing group stands, described in go out that line of oils is vertical is provided with fuel-displaced axis hole;
Being located at the vertical internal armature group of described casing group to stand, the top that described armature group is stood is fixing with described fuel-displaced axis hole to be connected; And
The oil-feed group being fixedly arranged on the vertical bottom of described casing group is stood, described oil-feed group founds the bearing including the first oil suction mechanism, the second oil suction mechanism and being all connected with described first oil suction mechanism and described second oil suction mechanism, and the bottom that described bearing stands with described armature group is fixed and is connected.
Further improvement is that of this utility model twin-stage electric fuel punp, described oil-feed group stand include being located at bottom pump cover, be located at the vane room on described pump cover and be located at the pump chamber on described vane room, the oil-feed path that described pump cover, vane room and pump chamber are communicated with.
Further improvement is that of this utility model twin-stage electric fuel punp, described first oil suction mechanism includes being fixedly arranged on the blade bottom described bearing, described blade is positioned at described vane room, drives described bearing rotary by described armature group is vertical and then drives described blade to rotate.
Further improvement is that of this utility model twin-stage electric fuel punp, described second oil suction mechanism includes intermeshing internal gear and external gear, described internal gear and described external gear are located in described pump chamber, drive described bearing rotary by described armature group is vertical and then drives described internal gear to rotate.
Further improvement is that of this utility model twin-stage electric fuel punp, described oil-feed path connects with the vertical interior oily rail of described armature group by being located at the oil-out at described pump chamber top.
Further improvement is that of this utility model twin-stage electric fuel punp, the oily rail in described armature group is vertical connects with described fuel-displaced axis hole.
Having the beneficial effect that of this utility model twin-stage electric fuel punp
Using twin-stage oil suction mechanism, fuel oil is driven by gear and blade twin-stage, improves fuel oil performance of feeding oil; The relative single-stage of rotating speed making motor reduces so that fuel pump improves service life, and motor speed reduces, and effectively reduces fuel pump running noise. This utility model exports high flow capacity at the low rotational speed, and improves the life-span of fuel pump.
Accompanying drawing explanation
Fig. 1 is the perspective view of this utility model twin-stage electric fuel punp.
Fig. 2 is the sectional view of Fig. 1.
Fig. 3 is the sectional view that in this utility model twin-stage electric fuel punp, oil-feed group is vertical.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
This utility model provides a kind of twin-stage electric fuel punp, mainly for diesel oil transmitter fuel feeding, in fuel oil supply system, armature group is made to found high speed rotating during fuel pump energising, and drive the blade being attached thereto and gear also to make high speed rotating, first order oil suction is the vertical corresponding oil duct of blade high speed rotating inswept oil-feed group, produce radially vortex, the cavitation phenomenon that ability is huge is produced again through spiral vortex type fuel flow, make to become inside runner vacuum state, fuel oil is sucked by the vacuum power in runner from oil-in, now, fuel oil has certain flow velocity and pressure, blade delivers fuel into the oil-in place of the gear of second level oil suction. comparing ordinary gear fuel pump, twin-stage electric fuel punp can provide more fuel flow faster to system, provides sufficient fuel power to electromotor. below in conjunction with accompanying drawing, this utility model twin-stage electric fuel punp is described in detail.
As depicted in figs. 1 and 2, this utility model twin-stage electric fuel punp includes the vertical B of casing group, go out line of oils vertical A, the vertical C of armature group and the vertical D of oil-feed group, goes out the vertical A of line of oils and is installed in the top of the vertical B of casing group, goes out the vertical A of line of oils and be provided with fuel-displaced axis hole; The vertical C of armature group is located at inside the vertical B of casing group, and the top of the vertical C of armature group is fixing with the fuel-displaced axis hole going out the vertical A of line of oils to be connected; The vertical D of oil-feed group is installed in bottom the vertical B of casing group, the vertical D of oil-feed group includes the first oil suction mechanism, the second oil suction mechanism and the bearing being all connected with the first oil suction mechanism and the second oil suction mechanism, this bearing is fixing with the bottom of the vertical C of armature group to be connected, the vertical C driving bearing of armature group rotates, and then rotates with the first oil suction mechanism on dynamic bearing and the second oil suction mechanism.
As it is shown on figure 3, the vertical D of oil-feed group includes being located at the pump cover 21 of bottom, being located at the vane room 23 on pump cover 21 and be located at the pump chamber 26 on vane room 23, at the oil-feed path that pump cover 21, vane room 23 and pump chamber 26 are communicated with. First oil suction mechanism includes the blade 22 being installed in bottom bearing, and blade 22 is positioned at vane room 23, and blade 22 is rotated by the vertical C driving bearing of armature group and then drives blade 22 to rotate. Second oil suction mechanism includes intermeshing internal gear 25 and external gear 24, internal gear 25 and external gear 24 are located in pump chamber 26, internal gear 25 is set on bearing, is rotated by the vertical C driving bearing of armature group and then drives internal gear 25 to rotate, and internal gear 25 drives external gear 24 to rotate.
Oil-feed path in the vertical D of oil-feed group connects with the oily rail in the vertical C of armature group by being located at the oil-out at pump chamber 26 top. Oily rail in the vertical C of armature group connects with fuel-displaced axis hole, and then defines from the vertical D of oil-feed group to the oil circuit going out the vertical A connection of line of oils.
Below the work process of twin-stage electric fuel punp is illustrated.
After switching on power, the transmission that electric current stands through inserted sheet group, transmit electrical power to the vertical C of armature group; The vertical C of armature group changes into kinetic energy by the effect of magnet steel electric energy, band moving vane and internal-external gear high speed rotating together, blade is utilized to accelerate continuously, fuel oil is made to flow in pump cover oil rail high speed, so that pump cover oil-in place produces cavitation phenomenon, so, fuel oil is just inhaled into pump cover in oil tank bottom bucket, accelerates to arrive vane room oil-out place, complete one-level oil-absorbing process in pump cover oil rail. Then in two grades of oil suction mechanisms, namely in internal-external gear, first, internal-external gear changes from small to big in space, vane room oil-in place, and this process produces vacuum, makes fuel oil be drawn into the space that internal-external gear is formed from vane room. At pump chamber oil-out place, from large to small, fuel oil is squeezed out the space between internal-external gear to the space between internal-external gear, thus reaching the effect of fuel feeding.
Go out the vertical A of line of oils and include that oil discharging seat, check-valves, inserted sheet group be vertical and support. The vertical B of casing group includes casing, magnet steel, blade and shell. The vertical C of armature group includes diverter, silicon steel sheet, armature shaft and rotor protection glue. The coiling center of the rotor upper magnet yoke of the vertical C of armature group and magnet steel center alignment. Vertical support place of oil outlet end armature group adopts split type support, improves the stability of the vertical high speed rotating of armature group, improves fuel pump efficiency and life-span. Have employed semi-conducting material carbon commutator, motor will not produce heating when logical excessive current because electric current is detained, thus reaching to increase power of motor, extends electric efficiency. Increasing armature quality, ensure that motor commutation fluctuates steady, service life increases. Adopt twin-stage oil suction structure, under meeting high flow capacity fuel delivery performance, reduce motor speed, improve the pump core life-span, reduce noise. All solder joints have employing plastic wraps to process, and overcome machinery and shake the sealing-off brought and open a way. Efficiently, reliably, volume is little.
Above in association with accompanying drawing embodiment, this utility model being described in detail, this utility model can be made many variations example by those skilled in the art according to the above description. Thus, some details in embodiment should not constitute restriction of the present utility model, this utility model by the scope that defines using appended claims as protection domain of the present utility model.
Claims (6)
1. a twin-stage electric fuel punp, it is characterised in that including:
Casing group is stood;
The line of oils that goes out being fixedly arranged on the vertical top of described casing group stands, described in go out that line of oils is vertical is provided with fuel-displaced axis hole;
Being located at the vertical internal armature group of described casing group to stand, the top that described armature group is stood is fixing with described fuel-displaced axis hole to be connected; And
The oil-feed group being fixedly arranged on the vertical bottom of described casing group is stood, described oil-feed group founds the bearing including the first oil suction mechanism, the second oil suction mechanism and being all connected with described first oil suction mechanism and described second oil suction mechanism, and the bottom that described bearing stands with described armature group is fixed and is connected.
2. twin-stage electric fuel punp as claimed in claim 1, it is characterized in that, described oil-feed group stand include being located at bottom pump cover, be located at the vane room on described pump cover and be located at the pump chamber on described vane room, the oil-feed path that described pump cover, vane room and pump chamber are communicated with.
3. twin-stage electric fuel punp as claimed in claim 2, it is characterized in that, described first oil suction mechanism includes being fixedly arranged on the blade bottom described bearing, and described blade is positioned at described vane room, drives described bearing rotary by described armature group is vertical and then drives described blade to rotate.
4. twin-stage electric fuel punp as claimed in claim 2, it is characterized in that, described second oil suction mechanism includes intermeshing internal gear and external gear, described internal gear and described external gear are located in described pump chamber, drive described bearing rotary by described armature group is vertical and then drives described internal gear to rotate.
5. twin-stage electric fuel punp as claimed in claim 2, it is characterised in that described oil-feed path connects with the vertical interior oily rail of described armature group by being located at the oil-out at described pump chamber top.
6. twin-stage electric fuel punp as claimed in claim 5, it is characterised in that the oily rail in described armature group is vertical connects with described fuel-displaced axis hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521109151.7U CN205277654U (en) | 2015-12-29 | 2015-12-29 | Electronic fuel pump of doublestage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521109151.7U CN205277654U (en) | 2015-12-29 | 2015-12-29 | Electronic fuel pump of doublestage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205277654U true CN205277654U (en) | 2016-06-01 |
Family
ID=56062235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521109151.7U Expired - Fee Related CN205277654U (en) | 2015-12-29 | 2015-12-29 | Electronic fuel pump of doublestage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205277654U (en) |
-
2015
- 2015-12-29 CN CN201521109151.7U patent/CN205277654U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160601 Termination date: 20181229 |