CN210370974U

CN210370974U - Single-return oil drive double-injection structure fuel pump assembly

Info

Publication number: CN210370974U
Application number: CN201921193992.9U
Authority: CN
Inventors: 万进光; 邹凤翔; 徐笑
Original assignee: Wenzhou Jinjia Auto Parts Co Ltd
Current assignee: Wenzhou Jinjia Auto Parts Co Ltd
Priority date: 2019-07-27
Filing date: 2019-07-27
Publication date: 2020-04-21
Anticipated expiration: 2029-07-27

Abstract

The utility model relates to a can all pump out single oil return drive two injection structure fuel pump assembly with the fuel of fuel tank bottom and the fuel of low-lying department in the fuel tank. This kind of single oil return drive two injection structure fuel pump assembly is including oil storage bucket and time oil pipe, its characterized in that: the oil storage barrel is provided with a four-way pipe, and the four-way pipe comprises a main pipe, a one-way interface, a two-way interface, a three-way interface and a four-way interface which are communicated with the main pipe. The fuel pump assembly with the single-return-oil driving double-injection structure realizes the single-return-oil driving double-injection function through the four-way pipe and the injection structure, sucks fuel at the bottom of the fuel storage barrel and at the low-lying position in the fuel tank into the fuel storage barrel, and ensures that the fuel in the fuel tank is fully utilized.

Description

Single-return oil drive double-injection structure fuel pump assembly

Technical Field

The utility model relates to a pump, concretely relates to use fuel pump assembly on car.

Background

Electronic fuel pump assemblies are a major component of automotive fuel injection systems and function to draw fuel from a fuel tank and deliver it to a fuel supply line. When the fuel in the fuel tank is about to be used up, due to the structural problem, a common fuel pump cannot pump out the fuel pump at the bottom of the fuel tank, so that the problem that the fuel cannot be used even if a small amount of fuel exists in the fuel tank is caused; in addition, some anisotropic fuel tanks (designed according to the type of vehicle) have depressions in which the fuel cannot be pumped out either.

Disclosure of Invention

In view of the problems existing in the prior art, the utility model discloses the innovation provides a can be with the fuel of fuel tank bottom and the fuel of low-lying department in the fuel tank all pump out single oil return drive two injection structure fuel pump assemblies.

This kind of single oil return drive two injection structure fuel pump assembly is including oil storage bucket, top cap, play oil pipe and time oil pipe, its characterized in that: install the four-way pipe on the oil storage bucket, the four-way pipe including be responsible for and be responsible for communicating one lead to interface, two-way interface, tee bend interface and four-way interface, one lead to the interface and meet with returning oil pipe, two-way interface with draw and penetrate the pipe and meet, draw the end-to-end connection of penetrating the pipe and have the fuel drainage that will store up the oil bucket below to draw the subassembly of penetrating in the oil storage bucket, three-way interface meets with the drainage tube, the one leads to the inner wall of being responsible for that is close to the tee bend interface between interface and the three-way interface and is the toper inner wall, four-way interface communicates.

The injection assembly comprises an injection nozzle and an injection channel, the injection nozzle and the injection channel are horizontally arranged, the injection nozzle and the injection channel are both positioned at the bottom of the oil storage barrel, the bottom of the oil storage barrel is provided with a backflow hole at a position corresponding to the injection nozzle and the injection channel, the injection nozzle is communicated with the injection pipe, an injection orifice of the injection nozzle faces one end of the injection channel, and the other end of the injection channel is communicated with the oil storage barrel.

The tail end of the drainage tube is provided with a filter tip.

According to the utility model provides a pair of two structure fuel pump assemblies that draw of drawing of single oil return drive through the four-way pipe and draw the structure and realize that two of single oil return drive draw the penetrating function to in inhaling the oil storage bucket with the fuel of low-lying department in oil storage bottom of the barrel portion and the oil tank, guarantee fuel make full use of in the oil tank.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure at A in FIG. 1;

fig. 3 is a schematic structural diagram at B in fig. 1.

Detailed Description

As shown in fig. 1, the fuel pump assembly with the single-return-oil driving double-injection structure comprises an oil storage barrel 1, a top cover 2, an oil outlet pipe 3 and a return oil pipe 4, which are all in the prior art and are not described herein again.

In order to realize the function of single oil return drive and double injection, the utility model discloses install four-way pipe 5 on oil storage bucket 1, as shown in fig. 2, four-way pipe 5 is including being responsible for 50 and being responsible for the communicating one-way interface 51 of 50, two-way interface 52, three-way interface 53 and four-way interface 54. Wherein, a through interface 51 is connected with the oil return pipe 4; the two-way connector 52 is connected with the ejector pipe 6, and the tail end of the ejector pipe 6 is connected with an ejector assembly which guides the fuel oil below the oil storage barrel 1 into the oil storage barrel 1; the three-way connector 53 is connected with the drainage tube 7, and the inner wall of the main tube between the one-way connector 51 and the three-way connector 53, which is close to the three-way connector 51, is a conical inner wall 500; and the four-way joint 54 is communicated with the oil storage barrel 1.

The specific working principle is as follows: the fuel pump supplies fuel to the engine through the oil outlet pipe 3 through the oil outlet pipe, and remaining fuel flows back to the four-way pipe 5 from the oil return pipe 4, forms the reposition of redundant personnel when passing through the four-way pipe 4: part of fuel oil flows through the injection pipe 6, and generates an air suction effect through an injection assembly at the tail end of the injection pipe 6, negative pressure is generated around the jet flow, the fuel oil at the bottom of the oil storage barrel 1 is sucked into the oil storage barrel 1, and the oil storage barrel is ensured to be in an oil full state all the time during the running of a vehicle; the other part of the fuel oil flows through the main pipe of the four-way pipe 5, because the inner wall of the main pipe between the one-way connector 51 and the three-way connector 53 and close to the three-way connector 51 is a conical inner wall 500, the fuel oil sprayed at high speed generates a suction effect, negative pressure is generated in the three-way connector 53 (a far-end oil suction pipe), the fuel oil at the low-lying position in the oil tank is sucked into the main pipe 50 through the drainage pipe 7, and finally the fuel oil flows into the oil storage barrel 1 through the four-way connector 54, so that the original full utilization of the fuel oil in.

As shown in fig. 3, the injection assembly includes an injection nozzle 60 and an injection passage 61, the injection nozzle 60 and the injection passage 61 are horizontally disposed, the injection nozzle 60 and the injection passage 61 are both located at the bottom of the oil storage barrel 1, the bottom of the oil storage barrel 1 is provided with a return hole 10 at a position corresponding to the injection nozzle 60 and the injection passage 61 (because the injection nozzle 60 and the injection passage 61 are horizontally disposed, the return hole 10 can be larger, so that the flow can be more sufficiently guided), the injection nozzle 60 is communicated with the injection pipe 6, an injection port of the injection nozzle 60 faces one end of the injection passage 61, and the other end of the injection passage 61 is communicated with the oil storage barrel 1. The fuel injected by the injection nozzle 60 at high speed generates a suction effect, and negative pressure is generated in a gap between the injection nozzle 60 and the injection passage 61, so that the nearby fuel is guided into the injection passage 61 and finally enters the oil storage barrel 1.

Finally, it is worth mentioning that the utility model discloses be equipped with the filter tip at the end of drainage tube in order to filter the fuel that the drainage was come. Through the filtration of filter tip, can filter the impurity of depositing at the oil tank low-lying easily, guarantee that clean fuel enters into in the oil storage bucket 1.

Claims

1. Single oil return drive draws penetrates structure fuel pump assembly, including oil storage bucket (1), top cap (2), play oil pipe (3) and return oil pipe (4), its characterized in that: install four-way pipe (5) on oil storage bucket (1), four-way pipe (5) including be responsible for (50) and with be responsible for (50) communicating one lead to interface (51), two-way interface (52), tee bend interface (53) and four-way interface (54), one lead to interface (51) and return oil pipe (4) and meet, two-way interface (52) with draw and penetrate pipe (6) and meet, draw the end-to-end connection of penetrating pipe (6) and have the fuel drainage of oil storage bucket (1) below to penetrate the subassembly that draws in oil storage bucket (1), tee bend interface (53) meet with drainage tube (7), one lead to the inner wall of being responsible for that is close to tee bend interface (53) between interface (51) and tee bend interface (53) and be toper inner wall (500), four-way interface (54) communicate with each other with oil storage bucket (1).

2. The single-return-oil-drive double-injection-structure fuel pump assembly according to claim 1, characterized in that: the injection assembly comprises an injection nozzle (60) and an injection channel (61), the injection nozzle (60) and the injection channel (61) are horizontally arranged, the injection nozzle (60) and the injection channel (61) are both positioned at the bottom of the oil storage barrel (1), a return hole (10) is formed in the position, corresponding to the injection nozzle (60) and the injection channel (61), of the bottom of the oil storage barrel (1), the injection nozzle (60) is communicated with the injection pipe (6), an injection port of the injection nozzle (60) faces one end of the injection channel (61), and the other end of the injection channel (61) is communicated with the oil storage barrel (1).

3. The single-return-oil-drive double-injection-structure fuel pump assembly according to claim 1, characterized in that: the tail end of the drainage tube (7) is provided with a filter tip (8).