CN201407113Y - Electric fuel pump - Google Patents

Electric fuel pump Download PDF

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Publication number
CN201407113Y
CN201407113Y CN2009201312556U CN200920131255U CN201407113Y CN 201407113 Y CN201407113 Y CN 201407113Y CN 2009201312556 U CN2009201312556 U CN 2009201312556U CN 200920131255 U CN200920131255 U CN 200920131255U CN 201407113 Y CN201407113 Y CN 201407113Y
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CN
China
Prior art keywords
fuel
oil
siphon valve
electric fuel
storing barrel
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.)
Expired - Lifetime
Application number
CN2009201312556U
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Chinese (zh)
Inventor
双南方
廖银生
张永年
王学超
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BYD Co Ltd
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BYD Co Ltd
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Publication date
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Priority to CN2009201312556U priority Critical patent/CN201407113Y/en
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Publication of CN201407113Y publication Critical patent/CN201407113Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses an electric fuel pump, and particularly relates to the technical field of vehicle motor fuel supply. In order to solve the problem that vehicles suffer from fuel absorptionfailure when going up a hill, the utility model provides an electric fuel pump comprises a fuel storage barrel communicated with the fuel tank, a pump core provided with an input port and an output port as well as the function of pressurizing fuel, and a filter serves to filter fuel and transfer the fuel to the engine, wherein, the input port of the pump core is connected with a fuel storage barrel pipeline, and the output port of the pump core is connected with the filter through a three-way valve. The electric fuel pump further comprises a siphon valve provided with a low-pressure end, an input end and an output end, wherein the low-pressure end is connected with the three-way valve, the input end of the siphon valve is connected to rear bottom part of the fuel tank in the fore-and-aftdirection of a vehicle, and the output end of the siphon valve is connected with the fuel storage barrel. By arranging the input end of the siphon valve at the rear bottom part of the vehicle in the fore-and-aft direction for far-end fuel absorption, hazards arising from the vehicle's failure to absorb fuel in the conduct of up-hill movement can be averted.

Description

A kind of electric fuel punp
[technical field]
The utility model relates to the engine oil field of vehicle, relates in particular to the electric fuel punp in the motor.
[background technique]
The work of motor car engine be unable to do without fuel oil, and fuel oil is stored in the fuel tank, in the prior art fuel delivery being given motor generally is that extraction by fuel pump realizes, fuel pump commonly used is an electric fuel punp, described fuel pump bottom and fuel tank bottom abutment, and the bottom at fuel pump is provided with opening, because law of connected vessels, the liquid level of oil is concordant with the liquid level of oil in the fuel pump in the described mailbox, so under the situation of cruising, described fuel pump can guarantee to extract and offer motor under fuel tank has oil condition, but when vehicle is climbed, oil accumulation is at far-end, will occur the fuel feeding deficiency easily when climbing for a long time and produce dangerous when driver's mistake estimation oil mass, when especially the go-anywhere vehicle of large tank is climbed large slope sloping, will occur inhaling the phenomenon less than oil like this when also having big gauging in the fuel tank, this is very big has influenced the Security of vehicle and the client satisfaction to vehicle.
[model utility content]
Can occur inhaling technical problem less than oil when the climbing in order to solve vehicle in the prior art, the utility model provides a kind of electric fuel punp that can realize the far-end oil suction.
In order to address the above problem, the technological scheme of employing is:
A kind of electric fuel punp, comprise: the oil-storing barrel that is communicated with fuel tank, the pump core that has inlet opening and delivery outlet and fuel oil is carried out supercharging, and the filter cleaner that fuel oil is filtered and fuel delivery is given motor, described pump core inlet opening links to each other with the oil-storing barrel pipeline, wherein, described pump core delivery outlet links to each other by three-way valve with filter cleaner, described electric fuel punp also comprises having low voltage terminal, the siphon valve of input end and output terminal, the low voltage terminal of described siphon valve links to each other with three-way valve, the input end of described siphon valve is connected to the vehicle fore-and-aft direction bottom rear of fuel tank, and the output terminal of described siphon valve links to each other with oil-storing barrel.
After adopting such structure, owing between pump core and filter cleaner, be provided with three-way valve, simultaneously the low voltage terminal of three-way valve with the siphon valve linked to each other, because flowing to the fuel oil of siphon valve from three-way valve is high pressure fuel, so its flow velocity is very fast, it has taken away the air in the siphon valve in flow process, and form low pressure at the low voltage terminal of siphon valve, thereby make the siphon valve to suck fuel oil and discharge from input end at output terminal, again because the input end of siphon valve is connected to the bottom of fuel tank vehicle fore-and-aft direction rear side, when vehicle was climbed, as long as in the fuel tank fuel oil is arranged, the siphon valve can both suck the fuel oil in the fuel tank like this, thereby flow to oil-storing barrel, and supply with to motor and use, thereby realized the function of far-end oil suction, the danger when having reduced driving.
[description of drawings]
The original schematic representation of a kind of electric fuel punp that Fig. 1 relates to for the utility model embodiment;
Fig. 2 is the pipeline sectional view of siphon valve among Fig. 1;
Fig. 3 is oil-storing barrel, drop tank and the fuel tank annexation schematic representation when installment state.
[embodiment]
In order to make the purpose of this utility model, technological scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Illustrated in fig. 1 is the principle schematic of the utility model embodiment electric fuel punp, a kind of electric fuel punp, comprise oil-storing barrel 6, pump core 4, three-way valve 3, filter cleaner 2 and siphon valve 8, described oil-storing barrel 6 links to each other with fuel tank 7, concrete, be provided with a breach (not looking out among the figure) in oil-storing barrel 6 bottoms, because law of connected vessels, guarantee that the apparent height of fuel oil among the oil-storing barrel 6 equals the apparent height of fuel tank 7 intermediate fuel oils, described pump core 4 has inlet opening and delivery outlet, the inlet opening of described pump core 4 links to each other with oil-storing barrel 6 pipelines, described pump core 4 is extracted the fuel oil in the oil-storing barrel 6 out, simultaneously fuel oil is carried out supercharging, and obtain high pressure fuel, the delivery outlet of described pump core 4 links to each other by three-way valve 3 with filter cleaner 2,2 pairs of fuel oils of described filter cleaner filter, described three-way valve 3 is related domain three-way valve 3 commonly used, it comprises three terminals, wherein two terminals respectively with pump core 4, filter cleaner 2 links to each other, and the 3rd terminal then links to each other with siphon valve 8, and is concrete, described siphon valve 8 also comprises three terminals, be respectively low voltage terminal 81, input end 82 and output terminal 83, the 3rd terminal of described three-way valve 3 links to each other with the low voltage terminal 81 of siphon valve 8, specifically is to link to each other by pipeline.The input end 82 of described siphon valve 8 links to each other with fuel tank 7, as scheme also can be drawn onto fuel oil in order to make under the upward slope state simultaneously, as shown in Figure 3, directions X is the direction of advance of vehicle, and described input end 82 is connected to the bottom of the vehicle fore-and-aft direction rear side of fuel tank 7 by pipeline.The output terminal 83 of described siphon valve 8 links to each other with oil-storing barrel 6, thereby makes the oil of siphon valve 8 sucking-offs use for oil-storing barrel 6, and in order further to guarantee effective work of siphon valve 8, the output terminal 83 of described siphon valve 8 is higher than the liquid level of oil-storing barrel 6 intermediate fuel oils.
Because the fuel oil that flows out in the pump core 4 is a high pressure oil, so the fuel oil from three-way valve 3 to siphon valve 8 low voltage terminals is a high pressure oil also, promptly the fuel oil that comes out from low voltage terminal is a high-speed fuel oil, to take away the air in the siphon valve 8 at a high speed then, thereby make siphon valve 8 produce low pressure, in order to make the low pressure better effects if of generation, promptly improve the speed of siphon valve low voltage terminal 81 fuel oils, the passage of the low voltage terminal 81 of described siphon valve 8 is set to turbination, be that described channel radius diminishes gradually along the fuel flow direction, and finally taper off to a point 811, final described fuel oil has just formed the jet of high speed and high pressure, the jet of high speed and high pressure makes and has formed certain degree of vacuum in the siphon valve 8, form pipeline between the input end 82 of described siphon valve 8 and the output terminal 83 simultaneously, thereby make and form pressure difference between siphon valve 8 and the fuel tank 7, thereby make the fuel oil in the fuel tank 7 be pressed in the siphon valve 8, described most advanced and sophisticated 811 are arranged on a side of siphon valve output terminal 83, be arranged on the top of siphon valve output terminal 83 specifically, the described fuel oil that comes from fuel tank will flow back to oil-storing barrel 6 with jet, thereby realization replenishes oil-storing barrel 6, has promptly realized the far-end oil suction.
In order to make the fuel oil in the described siphon valve low voltage terminal 81 can flow to output terminal 83 exactly, and finally flow into oil-storing barrel 6, the input end 82 of described siphon valve and the pipeline between the output terminal 83 adopt the bend pipe structure of " ∩ " type, and the top of described bend pipe is communicated with low voltage terminal 81 near output terminal 83 1 sides.
In order further to increase the effect of siphon valve 8 mesolows, described most advanced and sophisticated 811 protrude in the inwall of described siphon valve pipeline, and are arranged in pipeline output terminal 83 1 sides.
In order to prevent that large particle molecule in the fuel oil to the damage of pump core 4, is provided with thick filtering net 5 between described oil-storing barrel 6 and pump core 4.
Because motor 1 can not all use the fuel oil that filter cleaner 2 provides, described electric fuel punp also comprises return line, because the fuel oil that comes out from motor 1 also has high pressure, can not directly get back to oil-storing barrel 6, so return line is provided with pressure regulator 9, be used for fuel oil is carried out step-down.
Because oil-storing barrel 6 bottoms are provided with breach, can get back to fuel tank 7 by breach so flow to the fuel oil of oil-storing barrel 6 through siphon valve 8, for the oil that further keeps in the oil-storing barrel 6 can access use, and can not fall the rear side of fuel tank 7 along the vehicle fore-and-aft direction, the outside at described oil-storing barrel 6 also is provided with drop tank 10, described drop tank 10 holds described oil-storing barrel 6, and described drop tank 10 is fixed on fuel tank 7 bottoms, can retain fuel oil in order to ensure drop tank 10, and drop tank 10 also can normally use when vehicle travels usually, described drop tank 10 also is provided with through hole in the front bottom end of vehicle fore-and-aft direction, and described through hole links to each other with fuel tank 7 by pipeline 11.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field; under the prerequisite that does not break away from the utility model design; can also make some simple deduction or replace, all should be considered as belonging to the scope of patent protection that the utility model is determined by claims of being submitted to.

Claims (8)

1, a kind of electric fuel punp, comprise: the oil-storing barrel that is communicated with fuel tank, the pump core that has inlet opening and delivery outlet and fuel oil is carried out supercharging, and the filter cleaner that fuel oil is filtered and fuel delivery is given motor, described pump core inlet opening links to each other with the oil-storing barrel pipeline, it is characterized in that, described pump core delivery outlet links to each other by three-way valve with filter cleaner, described electric fuel punp also comprises having low voltage terminal, the siphon valve of input end and output terminal, the low voltage terminal of described siphon valve links to each other with three-way valve, the input end of described siphon valve is connected to the vehicle fore-and-aft direction bottom rear of fuel tank, and the output terminal of described siphon valve links to each other with oil-storing barrel.
2, electric fuel punp as claimed in claim 1 is characterized in that, the output terminal of described siphon valve is higher than the fuel level of oil-storing barrel.
3, electric fuel punp as claimed in claim 1 or 2 is characterized in that, the channel radius of described low voltage terminal diminishes gradually and tapers off to a point along the fuel flow direction.
4, electric fuel punp as claimed in claim 3 is characterized in that, forms pipeline between the input end of described siphon valve and the output terminal, and described tip protrudes in the inwall of described siphon valve pipeline and is arranged on pipeline output terminal one side.
5, electric fuel punp as claimed in claim 1 or 2 is characterized in that, described electric fuel punp also is included in the thick filtering net that fuel oil is filtered that is provided with between oil-storing barrel and the pump core.
6, electric fuel punp as claimed in claim 1 or 2 is characterized in that, described electric fuel punp also comprises the pressure regulator that the oil return of motor is carried out step-down, and described pressure regulator one end links to each other with motor, and the other end links to each other with oil-storing barrel.
7, electric fuel punp as claimed in claim 1 or 2 is characterized in that, described electric fuel punp also comprises the drop tank that is used to hold oil-storing barrel, and described drop tank is fixed on the fuel tank bottom.
8, electric fuel punp as claimed in claim 7 is characterized in that, described drop tank also is provided with through hole in the front bottom end of vehicle fore-and-aft direction, and described through hole is communicated with fuel tank.
CN2009201312556U 2009-04-30 2009-04-30 Electric fuel pump Expired - Lifetime CN201407113Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009201312556U CN201407113Y (en) 2009-04-30 2009-04-30 Electric fuel pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009201312556U CN201407113Y (en) 2009-04-30 2009-04-30 Electric fuel pump

Publications (1)

Publication Number Publication Date
CN201407113Y true CN201407113Y (en) 2010-02-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009201312556U Expired - Lifetime CN201407113Y (en) 2009-04-30 2009-04-30 Electric fuel pump

Country Status (1)

Country Link
CN (1) CN201407113Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107215204A (en) * 2017-07-24 2017-09-29 江铃汽车股份有限公司 Automobile double fuel tank connectivity structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107215204A (en) * 2017-07-24 2017-09-29 江铃汽车股份有限公司 Automobile double fuel tank connectivity structure

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Granted publication date: 20100217