CN219388048U

CN219388048U - Fuel injector and press mounting tool thereof

Info

Publication number: CN219388048U
Application number: CN202222526367.XU
Authority: CN
Inventors: 杨成; 王飞
Original assignee: Bog Warner Shanghai Automotive Fuel System Co ltd
Current assignee: Fenia Delphi Automotive Systems (Shanghai) Co.,Ltd.
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-07-21
Anticipated expiration: 2032-09-23

Abstract

The utility model relates to an oil sprayer and a press mounting tool thereof, wherein the oil sprayer comprises an oil sprayer base body with a cavity inside, a calibration rod, a spring, a movable valve and a ball valve are sequentially arranged in the cavity, one end of the spring is in contact connection with the calibration rod, the other end of the spring is in contact connection with the movable valve, an electromagnetic coil is arranged inside the oil sprayer base body, the electromagnetic coil is sleeved on the outer side of the calibration rod and the spring, a valve seat matched with the electromagnetic coil is arranged on the outer side of the ball valve, an orifice plate is arranged on the valve seat, a connector is arranged on one side of the oil sprayer base body, the oil sprayer further comprises an orifice plate check ring arranged between the orifice plate and the oil sprayer base body, and the orifice plate check ring is a hollow cylinder with an opening at the bottom. Compared with the prior art, the utility model has the advantages of more compact structure, good sealing effect and the like.

Description

Fuel injector and press mounting tool thereof

Technical Field

The utility model relates to the field of automobile accessories, in particular to an oil sprayer and a press-fitting tool thereof.

Background

The function of the fuel injector is to provide an accurate fuel injection quantity for the engine and to ensure that the fuel is injected at the target location. After receiving the fuel injection pulse signal sent by the ECU, the fuel injector controls the fuel injection quantity to perfect the formation and combustion of the mixed gas. The orifice plate retainer ring is a key part for ensuring the injection quantity and the injection position; the part is required to be firmly arranged at the end part of the fuel injector.

The currently used injector head is thicker, and the check ring of the orifice plate adopts a thick and heavy circular cylinder to ensure the sealing and fastening of the injector head, so that the outer diameter of the injector head matrix reaches 11mm. The installation space of the fuel injector occupies a large space, which is unfavorable for design and arrangement.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide an oil sprayer and a press-fitting tool thereof.

The aim of the utility model can be achieved by the following technical scheme:

as one aspect of the present utility model, there is provided a fuel injector, the fuel injector includes a fuel injector base body having a cavity therein, a calibration rod, a spring, a movable valve and a ball valve are sequentially disposed in the cavity, one end of the spring is in contact connection with the calibration rod, the other end of the spring is in contact connection with the movable valve, an electromagnetic coil is disposed in the fuel injector base body, the electromagnetic coil is sleeved outside the calibration rod and the spring, a valve seat matched with the ball valve is disposed outside the ball valve, a fuel injection orifice plate is mounted on the valve seat, and a connector is disposed on one side of the fuel injector base body.

As a preferable technical scheme, a filter device is arranged at a port positioned at one end of the calibration rod in the cavity.

As a preferable technical scheme, the filtering device is a detachable filter.

As a preferable technical scheme, the connector and the oil sprayer base body are integrally formed.

As the preferable technical scheme, the bottom of the orifice plate retainer ring is provided with a protruded annular baffle plate.

As the preferable technical scheme, the device is characterized in that the annular baffle plate and the bottom of the orifice plate retainer ring form 90 degrees.

As the preferable technical scheme, the device is characterized in that the annular baffle plate and the bottom of the orifice plate retainer ring form an acute angle.

As the preferable technical scheme, the bottom of the orifice plate retainer ring is arc-shaped.

As a preferable technical scheme, the bottom of the orifice plate retainer ring is protruded near the part of the opening and is recessed far from the part of the opening.

As another aspect of the present utility model, there is provided a press-fitting tool for mounting the above-described fuel injector, the mounting portion of the tool having a shape that is shape-fitted to the bottom of the orifice plate retainer.

Compared with the prior art, the utility model has the following beneficial effects:

1) The jet orifice plate retainer ring provided by the utility model adopts a flat plate design, so that the width of the retainer ring is reduced, the structure of the head part of the fuel injector is more compact, and the installation and arrangement of the fuel injector are facilitated.

2) The utility model provides the jet orifice plate retainer ring with the arc-shaped structure at the bottom, and the elastic force applied by the arc-shaped structure can provide more clamping force to realize more effective sealing, so that the sealing effect is better.

3) According to the utility model, the baffle plate is arranged at the bottom of the orifice plate retainer ring to prevent carbon deposition of the orifice.

Drawings

FIG. 1 is a planer view of a fuel injector of the present utility model;

FIG. 2 is a bottom view of the fuel injector of the present utility model;

FIG. 3 is a front plan view of a fuel injector according to a first embodiment of the present utility model

FIG. 4 is a planer view of a second embodiment of the fuel injector head of the present utility model;

FIG. 5 is a plan view of a retainer ring of a nozzle plate according to a second embodiment of the present utility model;

FIG. 6 is a schematic diagram of a retainer ring of an orifice plate of the present utility model;

the reference numerals in the figures indicate:

1. a fuel injector matrix of the prior art, 2, a valve seat of the prior art, 3, a fuel injection orifice plate of the prior art, 4, a check ring of the fuel injection orifice plate of the prior art, 5, a fuel injector matrix, 6, a cavity, 7, a calibration rod, 8, a spring, 9, a movable valve, 10, a valve seat, 11, an electromagnetic coil, 12, a connector, 13, a filter device, 14, a ball valve, 15, a spray hole plate, 16, a spray hole plate retainer ring, 17 and a press-fitting tool.

Detailed Description

The utility model will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present utility model, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present utility model is not limited to the following examples.

Example 1

As shown in fig. 1-3, one of the technical schemes provided by the utility model is as follows: a fuel injector comprises a fuel injector base body 5, a calibration rod 7, a spring 8, a movable valve 9, a valve seat 10, a solenoid 11, a connector 12, a filter device 13, a ball valve 14, a spray orifice plate 15 and a spray orifice plate retainer 16. The inside of the oil sprayer matrix 5 is provided with a cavity 6, and a filter device 13, a calibration rod 7, a spring 8, a movable valve 9 and a ball valve 14 are sequentially arranged in the cavity 6. One end of the spring 8 is connected with the calibration rod 7 in a contact way, and the other end of the spring 8 is connected with the movable valve 9 in a contact way. The filter device 13 is of detachable design. The electromagnetic coil 11 is positioned inside the injector base body 5 and sleeved outside the calibration rod 7 and the spring 8. The valve seat 10 is fixedly mounted on the outside of the ball valve 14. An orifice plate 15 is mounted on the lower surface of the valve seat 10. One side of the injector base 5 is provided with a connector 12, and the connector 12 and the injector base 5 are integrally formed.

A nozzle plate collar 16 is mounted between the nozzle plate 15 and the injector base 5. The orifice plate retainer 16 is a hollow cylinder with a hole at the bottom, and a ring-shaped baffle protruding and perpendicular to the lower surface of the orifice plate retainer 16 is arranged at the hole at the bottom of the orifice plate retainer 16 to prevent carbon deposition at the hole. The injector head adopting the design is more compact, and the outer diameter of the injector matrix 5 at the injector head is smaller than 7mm.

In the working process of the oil injector, oil gas enters the cavity 6, impurities in the oil gas are filtered through the filtering device 13, the phenomenon of blockage is avoided, when the electromagnetic coil 11 is electrified, the pressure of the spring 8 is smaller than the upward force of the movable valve 9, the ball valve 14 is opened, the oil gas enters the valve seat 10, and the oil gas is sprayed out of the spray hole plate 15 through the ball valve 14. When the electromagnetic coil 11 is powered off, the pressure of the spring 8 pushes the ball valve 14 to close the valve seat 10 through the movable valve 9, oil gas is blocked and cannot circulate, and the jet orifice plate 15 does not jet the oil gas.

Example 2

As shown in fig. 4-5, one of the technical solutions provided by the present utility model is as follows: an oil sprayer is improved from the embodiment 1, and the improvement is that the bottom of the orifice plate retainer 16 is provided with an arc-shaped structure, the part of the bottom close to the opening is protruding, the part far away from the opening is recessed, and compared with a scheme of a flat bottom, the oil sprayer can realize more effective sealing by applying elastic force in an arc shape. The annular baffle plate for preventing carbon deposition at the opening is arranged at the opening at the bottom of the orifice plate retainer ring and forms an obtuse angle with the lower surface. The outer diameter of the injector head body 5 of the injector with the more compact injector head body adopting the design is smaller than 7mm; and the sealing effect is better.

The utility model also provides a press-fitting tool 17 for mounting the injector retainer 16, wherein the shape of the mounting part of the press-fitting tool 17 is matched with the shape of the bottom of the orifice plate retainer 16.

The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims

1. The utility model provides an oil sprayer, the oil sprayer includes inside oil sprayer base member (5) that are equipped with cavity (6), be equipped with in proper order in cavity (6) and mark pole (7), spring (8), move valve (9) and ball valve (14), the one end and the mark pole (7) contact of spring (8) are connected, the other end and the move valve (9) contact of spring (8) are connected, the inside of oil sprayer base member (5) is equipped with solenoid (11), solenoid (11) cover is established in the outside of mark pole (7) and spring (8), ball valve (14) outside is equipped with valve seat (10) with it, installs orifice plate (15) on valve seat (10), one side of oil sprayer base member (5) is equipped with connector (12), its characterized in that, the oil sprayer still includes orifice plate (16) of installing between orifice plate (15) and oil sprayer base member (5), orifice plate (16) are the hollow cylinder of bottom for the bottom is equipped with the trompil.

2. A fuel injector according to claim 1, characterized in that the port in the cavity (6) at one end of the calibration rod (7) is provided with a filter device (13).

3. A fuel injector according to claim 2, characterized in that the filter means (13) is a removable filter means.

4. A fuel injector according to claim 1, characterized in that the connector (12) is integrally formed with the injector body (5).

5. A fuel injector according to claim 1, characterized in that the orifice plate collar (16) is provided with a protruding annular baffle at the bottom opening.

6. A fuel injector according to claim 5, characterized in that the annular baffle is at 90 degrees to the bottom of the orifice plate collar (16).

7. A fuel injector according to claim 5, characterized in that the annular baffle forms an obtuse angle with the bottom of the orifice plate collar (16).

8. A fuel injector according to claim 1, characterized in that the bottom of the orifice plate collar (16) is arcuate.

9. A fuel injector according to claim 8, characterized in that the bottom of the orifice plate collar (16) is raised near the opening and recessed away from the opening.

10. A press-fit tooling for mounting a fuel injector as claimed in any one of claims 1 to 9, wherein the mounting portion of the tooling has a shape which mates with the shape of the bottom of the orifice plate collar (16).