CN209781106U

CN209781106U - Iron core in high-pressure common rail oil sprayer

Info

Publication number: CN209781106U
Application number: CN201920464403.XU
Authority: CN
Inventors: 徐苍; 邱文艳
Original assignee: Nanchang Qianyan Technology Co Ltd
Current assignee: Nanchang Qianyan Technology Co Ltd
Priority date: 2019-04-08
Filing date: 2019-04-08
Publication date: 2019-12-13
Anticipated expiration: 2029-04-08

Abstract

The utility model provides a simple structure can reduce the iron core in solenoid valve response time's high pressure common rail injector just. An iron core in a high-pressure common rail oil sprayer comprises a cylindrical outer sleeve and a cylindrical inner sleeve, wherein the axial leads of the outer sleeve and the inner sleeve are overlapped, an annular end plate is arranged at one end of an annular channel formed between the outer sleeve and the inner sleeve, a plurality of through holes are formed in the end plate, a groove penetrating through the through holes is formed in the outer surface of the end plate, and the groove is arranged in the radial direction. The iron core in the high-pressure common rail oil sprayer has the advantages of simple structure, low manufacturing cost and capability of shortening the response time of the electromagnetic valve, and is suitable for wide popularization and application.

Description

Iron core in high-pressure common rail oil sprayer

Technical Field

the utility model belongs to the technical field of the solenoid valve, a iron core among the automobile engine sprayer is related to, iron core among concretely relates to high pressure common rail sprayer.

Background

The high-pressure common rail technology is a fuel supply mode which completely separates the generation of injection pressure and an injection process from each other in a closed-loop system consisting of a high-pressure fuel pump, a pressure sensor and an electronic control unit, so that the pressure of a high-pressure fuel pipe is independent of the rotating speed of an engine, and more fuel injectors are required to be applied to the engine in the future due to the advantages of the high-pressure common rail technology, wherein the fuel injectors are the most critical and complicated components in the system, the electromagnetic valves in the fuel injectors are more important, and the high-pressure common rail technology has higher requirements on the opening speed of the electromagnetic valves, requires shorter response time and has the greatest influence on the response time; if the iron core can pass through gasoline or diesel oil very smoothly, the response time of the electromagnetic valve can be shortened, however, the existing iron core is complex in structure and is not beneficial to the passing of the gasoline or the diesel oil.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a simple structure can reduce the iron core among solenoid valve response time's high pressure common rail injector just.

The utility model discloses a concrete technical scheme as follows:

An iron core in a high-pressure common rail oil sprayer comprises a cylindrical outer sleeve and a cylindrical inner sleeve, wherein the axial leads of the outer sleeve and the inner sleeve are overlapped, an annular end plate is arranged at one end of an annular channel formed between the outer sleeve and the inner sleeve, a plurality of through holes are formed in the end plate, a groove penetrating through the through holes is formed in the outer surface of the end plate, and the groove is arranged in the radial direction.

Further optimally, the number of the through holes is 4, and the 4 through holes are distributed on the end plate in a central symmetry mode.

Further optimally, the included angle a between the connecting line of the adjacent two through holes and the center of the end plate is more than or equal to 38 degrees and less than or equal to 40 degrees.

Further optimally, a chamfer is arranged at the included angle between the inner side surface of the inner sleeve and the outer surface of the end plate.

Further optimally, a chamfer is arranged at the included angle between the outer side surface of the outer sleeve and the outer surface of the end plate.

Further optimally, the edges and corners of the inner sleeve and the outer sleeve are designed in a right angle at the other end opposite to the end plate.

Compared with the iron core of the electromagnetic valve in the existing high-pressure common rail system, the iron core is simpler in structure and low in manufacturing cost, the annular channel between the inner sleeve and the outer sleeve is used for arranging the spring, the spring is tightly sleeved on the inner sleeve, a space is still reserved at the position, close to the outer part, of the annular channel, the through hole cannot be plugged by the spring, the movable iron core is arranged in the inner sleeve, the spring is fixed on the movable iron core, the iron core is fixed on a shell of the electromagnetic valve, when the electromagnetic valve acts, high-pressure oil flows out through the annular channel and the through hole, and compared with the existing iron core, due to the structural design of the iron core, smooth passing of the high-pressure oil is ensured, the permeability is good, due to the design, the action time of the high.

In conclusion, the iron core in the high-pressure common rail oil sprayer has the advantages of being simple in structure, low in manufacturing cost and capable of shortening response time of the electromagnetic valve, and is suitable for wide popularization and application.

Drawings

The present invention will be further described with reference to the accompanying drawings

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

Fig. 2 is a top view of the present invention;

3 FIG. 3 3 3 is 3 a 3 schematic 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 3 2 3; 3

FIG. 4 is a schematic cross-sectional view taken along line B-B of FIG. 2;

fig. 5 is a cross-sectional view of C-C in fig. 2.

In the figure: 1 is an outer sleeve, 2 is an inner sleeve, 3 is an end plate, 4 is a through hole, and 5 is a groove.

Detailed Description

The iron core of the high-pressure common rail injector is further described in detail with reference to the specific embodiment.

As shown in fig. 1-5, the iron core in the high-pressure common rail injector comprises a cylindrical outer sleeve 1 and a cylindrical inner sleeve 2, the axial lines of the outer sleeve 1 and the inner sleeve 2 are overlapped, one end of an annular channel formed between the outer sleeve 1 and the inner sleeve 2 is provided with an annular end plate 3, the end plate 3 is provided with a plurality of through holes 4, the outer surface of the end plate 3 is provided with a groove 5 penetrating through the through holes 4, the groove 5 is radially arranged, the number of the through holes 4 is 4, the 4 through holes 4 are centrally and symmetrically distributed on the end plate 3, wherein an included angle between a connecting line between two adjacent through holes 4 and the center of the end plate 3 is not less than 38 degrees and not more than 40 degrees, preferably, a =39.14 degrees, a included angle between the inner side surface of the inner sleeve 2 and the outer surface of the end plate 3 is provided with a chamfer, the included angle between the outer side surface of the outer, the edges and corners of the inner sleeve 2 and the outer sleeve 1 are both designed into right angles.

The design that the groove 5 penetrating through the through hole 4 is formed in the outer surface of the end plate 3 is more convenient for gasoline or diesel oil to pass through, so that the gasoline or diesel oil is prevented from being blocked in the through hole 4, and the smooth flowing of the gasoline or diesel oil is ensured; the design of the included angle between the connecting line of the two adjacent through holes 4 and the center of the end plate 3 ensures that the iron core not only has better circulation, but also has excellent overall strength; the edges and corners of the inner sleeve 2 and the outer sleeve 1 are designed in a right angle, so that sundries can be prevented from entering a gap between the iron core and the movable iron core, and the smoothness of the movable iron core entering and exiting the inner sleeve 2 is obstructed.

in conclusion, the iron core in the high-pressure common rail oil sprayer has the characteristics of simple structure, low manufacturing cost and capability of shortening the response time of the electromagnetic valve.

Claims

1. An iron core in a high-pressure common rail oil sprayer is characterized by comprising a cylindrical outer sleeve and a cylindrical inner sleeve, wherein the axial leads of the outer sleeve and the inner sleeve are overlapped, one end of an annular channel formed between the outer sleeve and the inner sleeve is provided with an annular end plate, the end plate is provided with a plurality of through holes, the outer surface of the end plate is provided with a groove penetrating through the through holes, and the groove is arranged in the radial direction.

2. The iron core of the high-pressure common rail oil injector according to claim 1, wherein the number of the through holes is 4, and the 4 through holes are distributed on the end plate in a central symmetry mode.

3. The iron core of the high-pressure common rail fuel injector according to claim 2, wherein an angle a between a connecting line of two adjacent through holes and the center of the end plate is 38 ° or more and 40 ° or less.

4. The common rail injector according to claim 1, wherein a chamfer is provided at an angle between an inner side surface of the inner sleeve and an outer surface of the end plate.

5. The common rail injector core according to claim 1, wherein a chamfer is provided at an angle between an outer side surface of the outer sleeve and an outer surface of the end plate.

6. The common rail injector according to any one of claims 1 to 5, wherein the corners of the inner and outer jackets are designed at right angles at the other end opposite to the end plate.