CN200952439Y

CN200952439Y - Alcohol resistant electronic injection fuel oil pump

Info

Publication number: CN200952439Y
Application number: CN 200620149251
Authority: CN
Inventors: 方林焱
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-09-24
Filing date: 2006-09-24
Publication date: 2007-09-26
Anticipated expiration: 2016-09-24

Abstract

The utility model relates to a fuel pump with resistance to alcohol corrosion for electro-jet engine, wherein a ring sacrificial anode made of active metal material is arranged outside a pump shell, an oil-outlet one-way valve adopts alcohol-resistant fuel-swelling rubber element, polytetrafluoroethylene is coated on surface of carbon brush lines of a carbon brush yoke assembly by electrostatic spray coating process, an anode circuit connection point is sealed with corrosion-resistant material with resistance to petrol and alcohol, and a pump wheel assembly adopts thickened impeller. The utility model is applicable to petrol and alcohol fuel and favorable for cold starting of engine, overcomes air resistance, and prolongs service life of oil pump.

Description

Anti-pure electrospray fuel pump

Technical field

The utility model relates to a kind of electronic fuel injection engine and uses fuel pump, particularly can be applicable to gasoline, the anti-alcohol corrosion of methanol and alcohol powered automobile electrospray fuel oil pump structure.

Background technique

Because rising steadily of oil price, alternative fuel has become the task of top priority.Aalcohols fuel is meant the fuel combination of liquid fuel such as methyl alcohol, ethanol or itself and gasoline, when being used as automotive fuel, have exhaust gas discharged pollute little, advantage such as thermal efficiency height, price are low.Because Aalcohols fuel has very strong molecular polarity, in electric field, be easy to make active the increasing of charged ion in the fuel, and then metal film is produced non-spontaneous redox reaction.By a large amount of electric-spraying fuel pumps that has damaged is carried out anatomic observation, find that anodic attack is very serious, if existing electronic fuel pump is not improved from production technology, will have a strong impact on the popularization of alcohols alternative fuel.

The model utility content

In order to overcome the deficiency that prior art can not satisfy the alcohols alternative fuel, the purpose of this utility model is to provide a kind of electrospray fuel pump with anti-Aalcohols fuel electrochemical corrosion.

For achieving the above object, the utility model is taked following design proposal:

A kind of anti-pure electrospray fuel pump, it comprises pump case, the carbon brush holder assembly, rotor assembly, the magnetic shoe assembly, the pump impeller assembly, fuel-displaced one-way valve, install a ring-like sacrificial anode additional in the pump case outside with the reactive metal material, ring-like sacrificial anode selects for use the metallic material that sprinkles than work in copper to make, have on the ring-like sacrificial anode can with the conductor terminal that the oil pump working power+the 12V terminal links to each other, fuel-displaced one-way valve is selected the rubber parts of the swelling of anti-the Aalcohols fuel for use, electrostatic spraying is carried out with polytetrafluoroethylene in the surface of the carbon brush line of carbon brush holder assembly, also can adopt flexible carbon fiber lead to come the carbon brush line of Alloy instead of Copper metal.The all tie points of anode circuit seal with anti-Aalcohols fuel and fuel-proof corrosion-resistant material, and the pump impeller assembly is selected the thickening type impeller.

The anti-pure electrospray fuel pump of the utility model by above-mentioned processing after because ring-like sacrificial anode is selected the metallic material that sprinkles than work in copper for use, so can effectively weaken the generation of anodic attack; Fuel-displaced one-way valve is selected the rubber parts of the swelling of anti-the Aalcohols fuel for use, can guarantee effectively that fuel supply system keep-ups pressure, so that realize cold start-up smoothly; The anode circuit tie point is by effective closure, and the polytetrafluoroethylene film on the carbon brush line surface of carbon brush holder assembly effectively guardwire is not subjected to the erosion of Aalcohols fuel and does not influence the flexibility of carbon brush line, so can effectively weaken the generation of anodic attack; The thickening type impeller can effectively improve the flow of fuel pump, thereby has overcome the air-resistance phenomenon of Aalcohols fuel at torridity summer.

The beneficial effect of the anti-pure electrospray fuel pump of the utility model is: can satisfy the use of gasoline, Aalcohols fuel simultaneously, help engine cold-start, overcome vapour lock, prolong the working life of fuel pump.

Description of drawings

Accompanying drawing is the anti-pure electrospray vehicle fuel pump structure schematic representation of the utility model

Embodiment

Engaging drawings and Examples below further specifies the utility model.

Accompanying drawing is depicted as an embodiment of the anti-pure electrospray fuel pump of the utility model, this anti-pure electrospray fuel pump, comprise pump case 1, carbon brush holder assembly 2, rotor assembly 3, magnetic shoe assembly 4, pump impeller assembly 5, fuel-displaced one-way valve 6, install a ring-like sacrificial anode 14 additional with the reactive metal material in pump case 1 outside, have on the ring-like sacrificial anode 14 can with the conductor terminal 13 that the oil pump working power+12V terminal 12 links to each other, fuel-displaced one-way valve 6 is selected the rubber parts of the swelling of anti-the Aalcohols fuel for use, electrostatic spraying is carried out with polytetrafluoroethylene in the surface of the carbon brush line 11 of carbon brush holder assembly 2, also can adopt flexible carbon fiber lead to come the carbon brush line 11 of Alloy instead of Copper metal.Anode

circuit tie point

7,8,9 will seal with anti-Aalcohols fuel and fuel-proof corrosion-resistant material, and pump impeller assembly 5 is selected thickening type impeller 10.

The anti-pure electrospray fuel pump of the utility model is owing to can satisfy the use of gasoline, Aalcohols fuel simultaneously, help motor cold start-up, overcome vapour lock, prolong working life of fuel pump, and technology is fairly simple, existing product is changed few, tissue that can be very fast is produced in batches, so can well guarantee the large-scale promotion of alcohols alternative fuel.

Claims

1, a kind of anti-pure electrospray fuel pump, it comprises pump case (1), carbon brush holder assembly (2), rotor assembly (3), magnetic shoe assembly (4), pump impeller assembly (5), fuel-displaced one-way valve (6), it is characterized in that: install a ring-like sacrificial anode (14) additional with the reactive metal material in pump case (1) outside, the conductor terminal (13) that can link to each other with oil pump working power+12V terminal (12) is arranged on the ring-like sacrificial anode (14), fuel-displaced one-way valve (6) is selected the rubber parts of the swelling of anti-the Aalcohols fuel for use, electrostatic spraying is carried out with polytetrafluoroethylene in the surface of the carbon brush line (11) of carbon brush holder assembly (2), anode circuit tie point (7,8,9) will seal with anti-Aalcohols fuel and fuel-proof corrosion-resistant material, pump impeller assembly (5) is selected thickening type impeller (10).

2, anti-pure electrospray fuel pump according to claim 1, it is characterized in that: described carbon brush line (11) can be made with flexible carbon fiber lead.

3, anti-pure electrospray fuel pump according to claim 1 is characterized in that: described ring-like sacrificial anode (14) selects for use the metallic material that sprinkles than work in copper to make.