阅读说明：本技术 车用燃油泵近远端引射组件 (Near-far end injection assembly of vehicle fuel pump ) 是由 张曦 谭潇路 杜春雷 李阳 于 2021-08-18 设计创作，主要内容包括：本发明公开了一种车用燃油泵近远端引射组件,包括引射壳体,所述引射壳体内设置有远端引射腔、近端引射腔和进油腔,所述进油腔通过第一细长孔与远端引射腔连通,所述进油腔通过第二细长孔与近端引射腔连通,所述引射壳体设置有与进油腔连通的进油接头,所述引射壳体上设置有与远端引射腔连通的远端虹吸接头和远端引射出油口,所述引射壳体上设置有与近端引射腔连通的近端虹吸口和近端引射出油口。在引射壳体上设置有近端引射腔和远端引射腔,将近端引射和远端引射组合在同一零件上,且均通过进油腔实现虹吸的负压,从而简化了油路,且减少了零部件数量,同时也降低整个引射组件占用的空间,使其能在较小的燃油泵总成中使用。(The invention discloses a near-far end injection assembly of a vehicle fuel pump, which comprises an injection shell, wherein a far-end injection cavity, a near-end injection cavity and an oil inlet cavity are arranged in the injection shell, the oil inlet cavity is communicated with the far-end injection cavity through a first elongated hole, the oil inlet cavity is communicated with the near-end injection cavity through a second elongated hole, the injection shell is provided with an oil inlet connector communicated with the oil inlet cavity, the injection shell is provided with a far-end siphon connector and a far-end injection oil outlet which are communicated with the far-end injection cavity, and the injection shell is provided with a near-end siphon inlet and a near-end injection oil outlet which are communicated with the near-end injection cavity. The near-end injection cavity and the far-end injection cavity are arranged on the injection shell, the near-end injection and the far-end injection are combined on the same part, and siphon negative pressure is realized through the oil inlet cavity, so that an oil way is simplified, the number of parts is reduced, the space occupied by the whole injection assembly is reduced, and the injection assembly can be used in a smaller fuel pump assembly.)

1. The utility model provides a subassembly is drawn to near distal end of automobile-used fuel pump, its characterized in that: the injection device comprises an injection shell (1), wherein a far-end injection cavity (1a), a near-end injection cavity (1b) and an oil inlet cavity (1c) are arranged in the injection shell (1), the oil inlet cavity (1c) is communicated with the far-end injection cavity (1a) through a first elongated hole (1d), the first elongated hole (1d) comprises a first oil guiding section facing the oil inlet cavity (1c) and a first elongated section facing the far-end injection cavity (1a), the oil inlet cavity (1c) is communicated with the near-end injection cavity (1b) through a second elongated hole (1e), and the second elongated hole (1e) comprises a second oil guiding section facing the oil inlet cavity (1c) and a second elongated section facing the near-end injection cavity (1 b); the injection shell (1) is provided with an oil inlet joint (2) communicated with the oil inlet cavity (1c), and the other end of the oil inlet joint (2) is used for connecting a pump core; the injection shell (1) is provided with a far-end siphon joint (3) and a far-end injection oil outlet (4), the far-end siphon joint (3) is communicated with the far-end injection cavity (1a), the other end of the far-end siphon joint (3) is connected to the far end of the oil tank through an oil pipe, and the other end of the far-end injection oil outlet (4) is communicated with the oil pool; the near-end siphon inlet (5) and the near-end injection oil outlet (6) which are communicated with the near-end injection cavity (1b) are arranged on the injection shell (1), the other end of the near-end siphon inlet (5) is communicated with an oil tank, and the other end of the near-end injection oil outlet (6) is communicated with an oil pool;

when fuel enters the oil inlet cavity (1c) from the oil inlet joint (2), the fuel is divided into two paths: one path of the fuel enters the far-end injection cavity (1a) through the first elongated hole (1d) and forms a far-end siphon after passing through the far-end siphon connector (3), and the fuel at the far end in the fuel tank is sucked into the far-end injection cavity (1a) and then flows into the fuel tank through the far-end injection oil outlet (4); the other path of the fuel enters the near-end injection cavity (1b) through the second elongated hole (1e) and forms a near-end siphon after passing through the near-end siphon port (5), and the fuel at the near end in the fuel tank is sucked into the near-end injection cavity (1b) and then flows into the fuel tank through the near-end injection oil outlet (6).

2. The vehicular fuel pump near-far-end injection assembly according to claim 1, characterized in that: the oil inlet cavity (1c) is arranged at the left end of the injection shell (1), the far-end injection cavity (1a) and the near-end injection cavity (1b) are located on the right side of the oil inlet cavity (1c), the far-end injection cavity (1a) and the near-end injection cavity (1b) are horizontally arranged at intervals, the oil inlet joint (2), the far-end siphon joint (3) and the far-end injection oil outlet (4) are sequentially arranged at the upper end of the injection shell (1) from left to right upwards, the near-end siphon inlet (5) is arranged at the lower end of the injection shell (1) towards the direction, and the right-end opening of the near-end injection cavity (1b) is used for injecting the near-end injection oil outlet (6).

3. The vehicular fuel pump near-far-end injection assembly according to claim 2, characterized in that: the left end of oil feed chamber (1c) is provided with and is used for penetrating lid (7) with the sealed drawing of oil feed chamber, the right-hand member opening in chamber (1a) is penetrated in the distal end drawing, and seals through pier nose (8).

4. The vehicular fuel pump near-far-end injection assembly according to claim 1, characterized in that: a valve core (9) is arranged between the oil inlet cavity (1c) and the near-end injection cavity (1b), and the second elongated hole (1e) is arranged in the valve core (9).

5. The vehicular fuel pump near-far-end injection assembly according to claim 2, characterized in that: the inner diameter of the end head at the upper end of the far-end injection oil outlet (4) is gradually increased, and the inner diameter of the end head at the right end of the near-end injection oil outlet (6) is gradually increased.

Technical Field

The invention belongs to the technical field of fuel pumps of automobiles and motorcycles, and particularly relates to a near-far end injection assembly of a fuel pump for an automobile.

Background

The injection assembly generally comprises a near-end injection component and a far-end injection component, the near-end injection component and the far-end injection component are two groups of separated oil paths, and the near-end injection component or the far-end injection component is realized by adopting different parts.

Disclosure of Invention

The invention aims to provide a near-far end injection assembly of a vehicle fuel pump, which simplifies the layout of an oil way and enables the layout of near-end injection and far-end injection in a smaller fuel pump to be realized simultaneously.

Therefore, the technical scheme adopted by the invention is as follows: a near-far end injection assembly of an automotive fuel pump comprises an injection shell, wherein a far-end injection cavity, a near-end injection cavity and an oil inlet cavity are arranged in the injection shell, the oil inlet cavity is communicated with the far-end injection cavity through a first elongated hole, the first elongated hole comprises a first oil guide section facing the oil inlet cavity and a first elongated section facing the far-end injection cavity, the oil inlet cavity is communicated with the near-end injection cavity through a second elongated hole, and the second elongated hole comprises a second oil guide section facing the oil inlet cavity and a second elongated section facing the near-end injection cavity; the injection shell is provided with an oil inlet joint communicated with the oil inlet cavity, and the other end of the oil inlet joint is used for connecting the pump core; the injection shell is provided with a far-end siphon joint and a far-end injection oil outlet which are communicated with the far-end injection cavity, the other end of the far-end siphon joint is connected to the far end of the oil tank through an oil pipe, and the other end of the far-end injection oil outlet is communicated with the oil pool; the near-end siphon port and the near-end injection oil outlet are arranged on the injection shell and are communicated with the near-end injection cavity, the other end of the near-end siphon port is communicated with the oil tank, and the other end of the near-end injection oil outlet is communicated with the oil pool; when fuel enters the oil inlet cavity from the oil inlet connector, the fuel is divided into two paths, one path enters the far-end injection cavity through the first elongated hole and forms far-end siphon after passing through the far-end siphon connector, the fuel at the far end in the oil tank is sucked and flows into the oil pool through the far-end injection oil outlet, the other path enters the near-end injection cavity through the second elongated hole and forms near-end siphon after passing through the near-end siphon inlet, and the fuel at the near end in the oil tank is sucked and flows into the oil pool through the near-end injection oil outlet.

Preferably, the oil inlet cavity is arranged at the left end of the injection shell, the far-end injection cavity and the near-end injection cavity are located on the right side of the oil inlet cavity, the far-end injection cavity and the near-end injection cavity are arranged at an upper-lower horizontal interval, the oil inlet joint, the far-end siphon joint and the far-end injection oil outlet are sequentially arranged at the upper end of the injection shell from left to right upwards, the near-end siphon port is arranged at the lower end of the injection shell in the direction of the near-end siphon port, and the near-end injection cavity is provided with a right-end injection oil outlet in the direction of the opening at the right end.

Further preferably, the left end in oil feed chamber is provided with and is used for penetrating the lid with the sealed drawing in oil feed chamber, the right-hand member opening in chamber is penetrated and sealed through the pier nose to the distal end.

Further preferably, a valve core is arranged between the oil inlet cavity and the near-end injection cavity, and the second elongated hole is formed in the valve core.

Preferably, the inner diameter of the end head at the upper end of the far-end injection oil outlet is gradually increased, and the inner diameter of the end head at the right end of the near-end injection oil outlet is gradually increased.

The invention has the beneficial effects that: the near-end injection cavity and the far-end injection cavity are arranged on the injection shell, the near-end injection and the far-end injection are combined on the same part, and siphon negative pressure is realized through the oil inlet cavity, so that an oil way is simplified, the number of parts is reduced, the space occupied by the whole injection assembly is reduced, and the injection assembly can be used in a smaller fuel pump assembly.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the flow of fluid in the present invention.

Detailed Description

The invention will be further illustrated by the following examples in conjunction with the accompanying drawings:

as shown in fig. 1 and 2, a near-far end injection assembly of a vehicle fuel pump is provided, and a main body of the injection assembly is an injection housing 1. It draws chamber 1a to draw the far end, the near-end draws chamber 1b and oil feed chamber 1c to draw to be provided with in drawing the casing 1, oil feed chamber 1c draws chamber 1a intercommunication with the far end through first elongate hole 1d, and first elongate hole 1d draws the first elongate section in chamber 1a including the first oil guide section of drawing towards oil feed chamber 1c and drawing towards the far end, oil feed chamber 1c draws chamber 1b intercommunication with the near-end through second elongate hole 1e, and second elongate hole 1e draws oil guide section and draws the second elongate section in chamber 1b towards the near-end including the second of drawing oil feed chamber 1 c.

An oil inlet joint 2 communicated with the oil inlet cavity 1c is arranged on the injection shell 1, and the other end of the oil inlet joint 2 is used for connecting a pump core. The injection shell 1 is provided with a far-end siphon joint 3 communicated with the far-end injection cavity 1a and a far-end injection oil outlet 4, the other end of the far-end siphon joint 3 is connected to the far end of the oil tank through an oil pipe, and the other end of the far-end injection oil outlet 4 is communicated with the oil pool. The near-end siphon inlet 5 and the near-end injection oil outlet 6 which are communicated with the near-end injection cavity 1b are arranged on the injection shell 1, the other end of the near-end siphon inlet 5 is communicated with an oil tank, and the other end of the near-end injection oil outlet 6 is communicated with an oil pool.

When fuel enters the fuel inlet cavity 1c from the fuel inlet joint 2, the fuel is divided into two paths, wherein one path enters the far-end injection cavity 1a through the first elongated hole 1d and forms far-end siphon after passing through the far-end siphon joint 3, and the fuel at the far end in the fuel tank is sucked into the far-end injection cavity 1a and then flows into the fuel tank through the far-end injection oil outlet 4. The other path enters the near-end injection cavity 1b through the second elongated hole 1e and forms a near-end siphon after passing through the near-end siphon port 5, and fuel at the near end in the oil tank is sucked into the near-end injection cavity 1b and then flows into the oil tank through the near-end injection oil outlet 6.

For further reducing the spatial position that nearly distal end draws the installation of penetrating subassembly and occupy, set up oil feed cavity 1c at the left end of drawing penetrating casing 1, the distal end draws penetrates chamber 1a, the near-end draws penetrates chamber 1b and is located the right side of oil feed cavity 1c, and the distal end draws penetrates chamber 1a, the near-end draws and penetrates chamber 1b upper and lower horizontal interval and set up, the oil feed connects 2, distal end siphon connects 3 and the far-end draws penetrates oil-out 4 and from left to right sets up in proper order upwards drawing the upper end of penetrating casing 1, the near-end siphon mouth 5 orientation sets up the lower extreme of drawing penetrating casing 1, the right-hand member opening that the near-end drew chamber 1b draws and draws oil-out 6 for the near-end.

For the convenience draw the processing that penetrates chamber 1a, near-end and penetrate chamber 1b, first elongated hole 1d and second elongated hole 1e in the casing 1, draw the left end of oil feed chamber 1c and the far-end and penetrate chamber 1a right-hand member and do not seal to draw through drawing that the left end setting of oil feed chamber 1c penetrates lid 7 and seal the oil feed chamber, draw the pier nose 8 that the right-hand member of penetrating chamber 1a set up at the far-end and draw the chamber 1a sealed with the far-end.

Because the diameter of elongated hole is less, can set up elongated hole in case 9, pressing the case dress in corresponding position for increase draw and penetrate the life of casing mould, oil feed chamber 1c and near-end draw penetrate second elongated hole 1e between chamber 1b just sets up in case 9 in this embodiment.

In order to facilitate the fuel oil to enter the oil pool, the inner diameter of the end head at the upper end of the far-end injection oil outlet 4 is designed to be gradually increased, and the inner diameter of the end head at the right end of the near-end injection oil outlet 6 is designed to be gradually increased.

In the using process of the invention, in order to ensure that the far-end injection oil outlet 4 and the near-end injection oil outlet 6 can not suck the fuel oil in the oil pool back to the oil tank when the oil pump stops working, the length of the far-end injection oil outlet 4 is set to be longer, and a check valve is arranged at the position where the near-end siphon inlet 5 is communicated with the oil tank.