CN204572298U - A kind of separated fuel injection body - Google Patents
A kind of separated fuel injection body Download PDFInfo
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- CN204572298U CN204572298U CN201520096840.2U CN201520096840U CN204572298U CN 204572298 U CN204572298 U CN 204572298U CN 201520096840 U CN201520096840 U CN 201520096840U CN 204572298 U CN204572298 U CN 204572298U
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- oil sprayer
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Abstract
The utility model discloses a kind of separated fuel injection body, comprise oil sprayer upper body, oil sprayer lower body, O type circle, oil sprayer upper body is connected threadably with oil sprayer lower body, and realizes the sealing of the low pressure oil pocket at screw thread place with O type circle.Be processed with axial through hole in the inside of oil sprayer upper body, the bottom of this through hole and armature lever coordinates becomes control valve couple.Between oil sprayer upper body and oil sprayer lower body, assemble restricting orifice, the axial force produced by the screw thread of oil sprayer upper body and oil sprayer lower body meets the end face seal requirement of restricting orifice.Adopt structure of the present utility model that oil sprayer can be allowed to reduce by a more unmanageable orifice plate compressing member, also facilitate structural configuration and the processing of the low pressure oil duct of oil injector body inside.
Description
Technical field
The utility model belongs to oil sprayer, is specifically related to a kind of oil sprayer being applicable to C.I. Engines of Automobile common-rail injection system.
Background technique
Electrocontrolled high-pressure common rail oil sprayer has a wide range of applications in commercial Medium or severe type vehicle diesel engine.Electrocontrolled high-pressure common rail oil sprayer adopts typical hydraulic servo driving system usually, and it mainly comprises the component such as final controlling element, control valve and restricting orifice.
Usually, control valve is designed the top being arranged in restricting orifice, and such as a kind of typical structure is at the upper end surface of restricting orifice processing conical surface, with the function coordinating spherical part to realize valve; The lower end surface of restricting orifice has the demand of high pressure sealing usually, with prevent high pressure oil from then on face leakage in the low pressure oil pocket in oil sprayer.For reaching this high pressure sealing demand, existing structure mainly have employed an orifice plate compressing member.This orifice plate compressing member is with outside thread, and the screw thread of oil injector body inwall matches, thus with the axial force formed after being threaded to meet the high pressure sealing demand of restricting orifice lower end surface.
Final controlling element mainly contains piezoelectricity type and solenoid type two kinds, and in Medium or severe type car field based on solenoid type final controlling element.The structure of solenoid type final controlling element comprises electromagnet core, the spacing core of electromagnet, armature, armature lever etc.; Wherein electromagnet core is around the outside being arranged in the spacing core of electromagnet, and normally a kind of structure with blind hole of the spacing core of electromagnet, and the upper end portion of armature lever extend among this blind hole usually.Armature lever and armature match and form electromagnet couple; In addition, armature lever also needs to match with another pored component formation control valve coupling.Providing as given a definition to armature lever, with the cooperation place of armature lever and armature for demarcating, more than this cooperation place, being called armature lever top, otherwise being called armature lever bottom.So, existing control valve couple structure mainly contains two kinds: the first is that orifice plate compressing member is processed through mesopore, coordinates, thus form control valve couple with the bottom of this mesopore and armature lever; The second coordinates with the top of the blind hole of the spacing core of electromagnet and armature lever, thus form control valve couple.
Orifice plate compressing member is to the toughness of part material, hardness, machinability and all have higher requirements to the tolerance of size of part processing and form and position tolerance, wherein the important squareness tolerance as orifice plate compressing member end face and medial axis; Especially in the first control valve couple structure existing, the mesopore of orifice plate compressing member also requires high wear resistance, thus except quenching, also relates to the strict control of carburization process.
In existing the second control valve couple structure, the spacing core of electromagnet also has higher requirements to part material, machining tolerance, particularly the coaxality of the medial axis of the spacing core of electromagnet and the medial axis of orifice plate compressing member; And for the through mesopore of the orifice plate compressing member of the first control valve couple structure existing, the process requirements such as the carburizing of the second control valve couple structure are transferred in the blind hole of the spacing core of electromagnet, make operation easier higher.
Existing two kinds of control valve couple structures faced by stubborn problem be: on the one hand, orifice plate compressing member and the spacing core of electromagnet will meet the requirement of part material mentioned above, machining tolerance and technique; And on the other hand, the external diameter due to orifice plate compressing member and the spacing core of electromagnet is limited to the internal diameter of oil injector body, so the less spare part outside measurement of orifice plate compressing member and the spacing core of electromagnet improves the difficulty of frock.
In addition, usually need to arrange low pressure oil duct by boring in oil injector body, these oil ducts have tiny long and narrow feature, and increase the difficulty of boring, such as drill bit easily ruptures.
Summary of the invention
The purpose of this utility model is to provide a kind of separated fuel injection body, to simplify the internal structure of oil sprayer, improves the reliability of oil sprayer, reduces manufacture processing cost, enhances productivity.
In order to solve above technical problem, the concrete technological scheme that the utility model adopts is as follows:
A kind of separated fuel injection body, comprises oil sprayer upper body (6), oil sprayer lower body (7), it is characterized in that: oil sprayer upper body (6) and oil sprayer lower body (7) are tightly connected for dismountable;
Be processed with recessed end face one (13), recessed end face two (18) in the inside of described oil sprayer upper body (6), and between recessed end face one (13) and recessed end face two (18), machined axial through hole (12); Described through hole (12) coordinates with the bottom of armature lever (3) function realizing control valve couple;
Recessed end face one (13) in oil sprayer upper body (6) and machined through spill port (11) between recessed end face two (18); Low pressure oil duct one (26) is processed with in oil sprayer upper body (6); Low pressure oil duct two (27) is processed with in oil sprayer lower body (7); Low pressure oil duct one (26) is all connected with low pressure oil pocket (29) with low pressure oil duct two (27);
Recessed end face two (18) in described oil sprayer upper body (6) and between the upper-end surface of restricting orifice (5) for close contact is connected; For having the compact siro spinning technology of high pressure sealing function between the lower end surface of described restricting orifice (5) and oil sprayer lower body (7).
Described dismountable be tightly connected for: oil sprayer upper body (6) and oil sprayer lower body (7) are processed with screw thread one (15) and screw thread two (19) respectively, screw thread one (15) and screw thread two (19) match, meet low pressure seal requirement by O type circle (8), prevent low-voltage fuel from leaking into outside oil sprayer from screw thread one (15) and screw thread two (19); Groove (16) for mounting O-shaped rings (8) is arranged in oil sprayer upper body (6) or is arranged in oil sprayer lower body (7).
The medial axis of described spill port (11) and the axis parallel of oil sprayer upper body (6); Described spill port (11) can be one, also can be multiple; When the number of spill port (11) is two, spill port (11) is symmetrically distributed in the both sides of the medial axis of oil sprayer upper body (6); When the number of spill port (11) be three and above time, spill port (11) is uniformly distributed in around the medial axis of oil sprayer upper body (6).
The described close-connected first kind of way with high pressure sealing function is: for close contact connects between the lower end surface of described restricting orifice (5) and the end face (20) of oil sprayer lower body (7); The screw thread one (15) of oil sprayer upper body (6) and the screw thread two (19) of oil sprayer lower body (7) form axial force after mounting, and this axial force meets the high pressure sealing requirement between the lower end surface of restricting orifice (5) and the end face (20) of oil sprayer lower body (7).
The described close-connected second way with high pressure sealing function is: described oil sprayer lower body (7) machined recessed end face three (22); For close contact connects between the lower end surface of restricting orifice (5) and the recessed end face three (22) of oil sprayer lower body (7); The screw thread one (15) of oil sprayer upper body (6) and the screw thread two (19) of oil sprayer lower body (7) form axial force after mounting, and this axial force meets the high pressure sealing requirement between the lower end surface of restricting orifice (5) and the recessed end face three (22) of oil sprayer lower body (7).
Described the third mode close-connected with high pressure sealing function is: for close contact connects between the lower end surface of described restricting orifice (5) and the upper-end surface of transition part one (23); For close contact connects between the lower end surface of transition part one (23) and the end face (20) of oil sprayer lower body (7); The screw thread one (15) of oil sprayer upper body (6) and the screw thread two (19) of oil sprayer lower body (7) form axial force after mounting, and this axial force meets the high pressure sealing requirement between high pressure sealing requirement between the lower end surface of restricting orifice (5) and the upper-end surface of transition part one (23), the lower end surface of transition part one (23) and the end face (20) of oil sprayer lower body (7).
The described close-connected 4th kind of mode with high pressure sealing function is: described oil sprayer lower body (7) machined recessed end face three (22); Be close contact connection between the lower end surface of restricting orifice (5) and the upper-end surface with the transition part two (24) of shoulder feature; For close contact connects between the circular bead surface of transition part two (24) and the end face (20) of oil sprayer lower body (7); The screw thread one (15) of oil sprayer upper body (6) and the screw thread two (19) of oil sprayer lower body (7) form axial force after mounting, and this axial force meets the high pressure sealing requirement between high pressure sealing requirement between the lower end surface of restricting orifice (5) and the upper-end surface of transition part two (24), the circular bead surface of transition part two (24) and the end face (20) of oil sprayer lower body (7).
The described close-connected 5th kind of mode with high pressure sealing function is: described oil sprayer lower body (7) machined recessed end face three (22); For close contact connects between the lower end surface of restricting orifice (5) and the upper-end surface of transition part three (25).For close contact connects between the lower end surface of transition part three (25) and the recessed end face three (22) of oil sprayer lower body (7).The screw thread one (15) of oil sprayer upper body (6) and the screw thread two (19) of oil sprayer lower body (7) form axial force after mounting, and this axial force meets the high pressure sealing requirement between high pressure sealing requirement between the lower end surface of restricting orifice (5) and the upper-end surface of transition part three (25), the lower end surface of transition part three (25) and the recessed end face three (22) of oil sprayer lower body (7).
the utility model has beneficial effect.
1. the recessed end face two (18) of oil sprayer upper body (6) of the present utility model is connected with the upper and lower end face close contact of restricting orifice (5) respectively with the end face (20) of oil sprayer lower body (7), then meets the end face seal requirement of restricting orifice (5) by the screw thread one (15) of oil sprayer upper body (6) and produced the after mounting axial force of the screw thread two (19) of oil sprayer lower body (7).Thus the orifice plate compressing member (10) allowing oil sprayer no longer need in existing structure, the internal structure of oil sprayer has been simplified in the deletion of orifice plate compressing member (10), improves the reliability of oil sprayer.
2. the utility model is processed with axial through hole (12) in the inside of oil sprayer upper body (6), and this through hole (12) coordinates with armature lever (3) function realizing control valve couple.For the orifice plate compressing member (10) of existing structure and the spacing core of electromagnet (30), the oil sprayer upper body (6) that the utility model adopts has larger outside dimension, thus frock is easier, require lower to material, allowance control, carburized case control etc., thus reduce the cost manufacturing processing.
3. the utility model can hole to process low pressure oil duct from the recessed end face four (28) of oil sprayer upper body (6) with the end face (20) of oil sprayer lower body (7) respectively, and these oil ducts are connected with low pressure oil pocket (29).Thus greatly reducing the requirement to boring when processing oil duct, adding the working life of drill bit, reducing the cost manufacturing processing, avoid occurring frequent more changing drill bit and repeating frock event, save the production time.On the other hand, because the low pressure oil duct two (27) of the low pressure oil duct one (26) of oil sprayer upper body (6) and oil sprayer lower body (7) does not have coaxial requirement, the structural configuration of the low pressure oil duct of oil injector body inside is facilitated.
Accompanying drawing explanation
Figure 1A shows the first control valve couple structural representation of the prior art.
Figure 1B shows the second control valve couple structural representation of the prior art.
Fig. 2 shows the embodiment of control valve couple of the present utility model.
Fig. 3 show of the present utility modelly to be threaded, the embodiment of the oil sprayer upper body of through hole and spill port.
Fig. 4 A shows the embodiment of screwed oil sprayer lower body of the present utility model.
Fig. 4 B shows and is of the present utility modelly threaded and has the embodiment of the oil sprayer lower body of recessed end face.
Fig. 5 shows oil sprayer upper body of the present utility model and the connection of oil sprayer lower body and the embodiment of sealing, also shows the first assembling embodiment of restricting orifice in the utility model.
Fig. 6 A shows the second assembling embodiment of restricting orifice in the utility model.
Fig. 6 B shows the third assembling embodiment of restricting orifice in the utility model.
Fig. 6 C shows the four kind assembling embodiment of restricting orifice in the utility model.
Fig. 6 D shows the five kind assembling embodiment of restricting orifice in the utility model.
Fig. 7 shows the embodiment of the low pressure oil duct of oil sprayer upper body of the present utility model and oil sprayer lower body.
In figure: 1-armature, 2-electromagnet core, 3-armature lever, 4-control valve, 5-restricting orifice, 6-oil sprayer upper body, 7-oil sprayer lower body, 8-O type circle, 9-oil injector body, 10-orifice plate compressing member, 11-spill port, 12-through hole, the recessed end face one of 13-, 14-blind hole one, 15-screw thread one, 16-groove, 17-blind hole two, the recessed end face two of 18-, 19-screw thread two, 20-end face, 21-blind hole three, the recessed end face three of 22-, 23-transition part one, 24-transition part two, 25-transition part three, 26-low pressure oil duct one, 27-low pressure oil duct two, the recessed end face four of 28-, 29-low pressure oil pocket, the spacing core of 30-electromagnet, the spacing core blind hole of 31-, 32-compressing member mesopore.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail.
Existing control valve couple structure mainly contains two kinds: the first is that orifice plate compressing member 10 is processed through compressing member mesopore 32 as shown in Figure 1A, coordinates with the bottom of compressing member mesopore 32 and armature lever 3; The second as shown in Figure 1B, is coordinate with the top of the spacing core blind hole 31 of the spacing core of electromagnet 30 and armature lever 3.
Fig. 2 shows the embodiment of control valve couple of the present utility model.Axial through hole 12 is processed with in the inside of oil sprayer upper body 6.Through hole 12 coordinates with the bottom of armature lever 3, thus realizes the function of control valve couple.For the orifice plate compressing member 10 of existing structure and the spacing core 30 of electromagnet, the oil sprayer upper body 6 that the utility model adopts has larger outside dimension, thus frock is easier, requires lower to material, allowance control, carburized case control etc., thus reduces the cost manufacturing processing.
As shown in Figure 3, oil sprayer upper body 6 of the present utility model is processed with the blind hole 2 17 being with recessed end face 2 18, is also processed with the blind hole 1 being with recessed end face 1.Through spill port 11 is machined between recessed end face 1 and recessed end face 2 18.Spill port 11 can be one, also can be several; Especially two, and the medial axis of these two spill ports 11 all with the axis parallel of oil sprayer upper body 6, and be symmetrically distributed in the both sides of the medial axis of oil sprayer upper body 6.
As shown in Figure 3, oil sprayer upper body 6 is processed with screw thread 1.As shown in Figure 4 A, oil sprayer lower body 7 is processed with screw thread 2 19.And as shown in Figure 5, screw thread 1 and screw thread 2 19 match, and be furnished with O type circle 8 to meet low pressure seal requirement, prevent low-voltage fuel from leaking into outside oil sprayer from screw thread 1 and screw thread 2 19.Groove 16 for mounting O-shaped rings 8 is arranged in oil sprayer upper body 6, or is arranged in oil sprayer lower body 7.
The first assembling embodiment of restricting orifice 5 in the utility model as shown in Figure 5.For close contact is connected between recessed end face 2 18 and the upper-end surface of restricting orifice 5, and for close contact connects between the end face 20 of the lower end surface of restricting orifice 5 and oil sprayer lower body 7.The screw thread 1 of oil sprayer upper body 6 and the screw thread 2 19 of oil sprayer lower body 7 form axial force after mounting, and this axial force meets the high pressure sealing requirement between the lower end surface of restricting orifice 5 and the end face 20 of oil sprayer lower body 7.
Restricting orifice 5 is the second assembling embodiment in the utility model be shown in shown in Fig. 6 A.For close contact is connected between recessed end face 2 18 and the upper-end surface of restricting orifice 5.Oil sprayer lower body 7 machined the blind hole 3 21 with recessed end face 3 22.For close contact connects between the lower end surface of restricting orifice 5 and the recessed end face 3 22 of oil sprayer lower body 7.The screw thread 1 of oil sprayer upper body 6 and the screw thread 2 19 of oil sprayer lower body 7 form axial force after mounting, and this axial force meets the high pressure sealing requirement between the lower end surface of restricting orifice 5 and the recessed end face 3 22 of oil sprayer lower body 7.
Restricting orifice 5 is the third assembling embodiment in the utility model be shown in shown in Fig. 6 B.For close contact is connected between recessed end face 2 18 and the upper-end surface of restricting orifice 5, and for close contact connects between the upper-end surface of the lower end surface of restricting orifice 5 and transition part 1.For close contact connects between the lower end surface of transition part 1 and the end face 20 of oil sprayer lower body 7.The screw thread 1 of oil sprayer upper body 6 and the screw thread 2 19 of oil sprayer lower body 7 form axial force after mounting, and the high pressure sealing met between the lower end surface of restricting orifice 5 and the upper-end surface of transition part 1 of this axial force requires, high pressure sealing requirement between the lower end surface of transition part 1 and the end face 20 of oil sprayer lower body 7.
Restricting orifice 5 is the 4th kind of assembling embodiment in the utility model be shown in shown in Fig. 6 C.For close contact is connected between recessed end face 2 18 and the upper-end surface of restricting orifice 5.Oil sprayer lower body 7 machined the blind hole 3 21 with recessed end face 3 22.And be close contact connection between the lower end surface of restricting orifice 5 and the upper-end surface with the transition part 2 24 of shoulder feature.For close contact connects between the circular bead surface of transition part 2 24 and the end face 20 of oil sprayer lower body 7.The screw thread 1 of oil sprayer upper body 6 and the screw thread 2 19 of oil sprayer lower body 7 form axial force after mounting, and the high pressure sealing met between the lower end surface of restricting orifice 5 and the upper-end surface of transition part 2 24 of this axial force requires, high pressure sealing requirement between the circular bead surface of transition part 2 24 and the end face 20 of oil sprayer lower body 7.
Restricting orifice 5 is the 5th kind of assembling embodiment in the utility model be shown in shown in Fig. 6 D.For close contact is connected between recessed end face 2 18 and the upper-end surface of restricting orifice 5.Oil sprayer lower body 7 machined the blind hole 3 21 with recessed end face 3 22.And for close contact connects between the upper-end surface of the lower end surface of restricting orifice 5 and transition part 3 25.For close contact connects between the lower end surface of transition part 3 25 and the recessed end face 3 22 of oil sprayer lower body 7.The screw thread 1 of oil sprayer upper body 6 and the screw thread 2 19 of oil sprayer lower body 7 form axial force after mounting, and the high pressure sealing met between the lower end surface of restricting orifice 5 and the upper-end surface of transition part 3 25 of this axial force requires, high pressure sealing requirement between the lower end surface of transition part 3 25 and the recessed end face 3 22 of oil sprayer lower body 7.
The orifice plate compressing member 10 that the above five kind assembling embodiments of restricting orifice 5 in the utility model can allow oil sprayer no longer need in existing structure.The internal structure of oil sprayer has been simplified in the deletion of orifice plate compressing member 10, improves the reliability of oil sprayer.
As shown in Figure 7, in the utility model, from the recessed end face 4 28 of oil sprayer upper body 6 by Drilling operation low pressure oil duct 1, Drilling operation low pressure oil duct 2 27 can be passed through from the end face 20 of oil sprayer lower body 7.So, tiny long and narrow oil duct can be divided into two sections to hole originally, thus greatly reduces the requirement to boring, add the working life of drill bit, reduce the cost manufacturing processing, avoid occurring frequent more changing drill bit and repeating frock event, save the production time.On the other hand, low pressure oil duct 1 and low pressure oil duct 2 27 do not have coaxial requirement, and are all connected with low pressure oil pocket 29, so facilitate the structural configuration of the low pressure oil duct of oil injector body inside.
working procedure of the present utility model is as follows:
When after the solenoid energising in electromagnet core 2, armature 1 is subject to electromagnetic force, and after overcoming initial tension of spring, drive armature lever 3 to move straight up, control valve 4 is unlocked.High pressure oil, through after the throttle orifice in restricting orifice 5 and control valve 4, can have two flow directions.The first flows to chamber between electromagnet core 2 and oil sprayer upper body 6 by spill port 11, then flow into low pressure oil pocket 29 by low pressure oil duct 1, and the low pressure oil then flowing to oil sprayer lower body 7 by low pressure oil duct 2 27 exports; The second be by the upper-end surface of restricting orifice 5 near conduit or duct flow into matching gap between the blind hole 2 17 of oil sprayer upper body 6 and restricting orifice 5, then flow into low pressure oil pocket 29, the low pressure oil then flowing to oil sprayer lower body 7 by low pressure oil duct 2 27 exports.
When after the solenoid power-off in electromagnet core 2, armature 1 and armature lever 3 move straight down under initial tension of spring effect, and control valve 4 is closed.
Claims (8)
1. a separated fuel injection body, comprises oil sprayer upper body (6), oil sprayer lower body (7), it is characterized in that: oil sprayer upper body (6) and oil sprayer lower body (7) are tightly connected for dismountable;
Be processed with recessed end face one (13), recessed end face two (18) in the inside of described oil sprayer upper body (6), and between recessed end face one (13) and recessed end face two (18), machined axial through hole (12); Described through hole (12) coordinates with the bottom of armature lever (3) function realizing control valve couple;
Recessed end face one (13) in oil sprayer upper body (6) and machined through spill port (11) between recessed end face two (18); Low pressure oil duct one (26) is processed with in oil sprayer upper body (6); Low pressure oil duct two (27) is processed with in oil sprayer lower body (7); Low pressure oil duct one (26) is all connected with low pressure oil pocket (29) with low pressure oil duct two (27);
Recessed end face two (18) in described oil sprayer upper body (6) and between the upper-end surface of restricting orifice (5) for close contact is connected; For having the compact siro spinning technology of high pressure sealing function between the lower end surface of described restricting orifice (5) and oil sprayer lower body (7).
2. a kind of separated fuel injection body according to claim 1, it is characterized in that described dismountable be tightly connected for: oil sprayer upper body (6) and oil sprayer lower body (7) are processed with screw thread one (15) and screw thread two (19) respectively, screw thread one (15) and screw thread two (19) match, meet low pressure seal requirement by O type circle (8), prevent low-voltage fuel from leaking into outside oil sprayer from screw thread one (15) and screw thread two (19); Groove (16) for mounting O-shaped rings (8) is arranged in oil sprayer upper body (6) or is arranged in oil sprayer lower body (7).
3. a kind of separated fuel injection body according to claim 1, is characterized in that: the medial axis of described spill port (11) and the axis parallel of oil sprayer upper body (6); Described spill port (11) is one or more; When the number of spill port (11) is two, spill port (11) is symmetrically distributed in the both sides of the medial axis of oil sprayer upper body (6); When the number of spill port (11) be three and above time, spill port (11) is uniformly distributed in around the medial axis of oil sprayer upper body (6).
4. a kind of separated fuel injection body according to claim 1, the compact siro spinning technology described in it is characterized in that with high pressure sealing function is: for close contact connects between the lower end surface of described restricting orifice (5) and the end face (20) of oil sprayer lower body (7); The screw thread one (15) of oil sprayer upper body (6) and the screw thread two (19) of oil sprayer lower body (7) form axial force after mounting, and this axial force meets the high pressure sealing requirement between the lower end surface of restricting orifice (5) and the end face (20) of oil sprayer lower body (7).
5. a kind of separated fuel injection body according to claim 1, the compact siro spinning technology described in it is characterized in that with high pressure sealing function is: described oil sprayer lower body (7) machined recessed end face three (22); For close contact connects between the lower end surface of restricting orifice (5) and the recessed end face three (22) of oil sprayer lower body (7); The screw thread one (15) of oil sprayer upper body (6) and the screw thread two (19) of oil sprayer lower body (7) form axial force after mounting, and this axial force meets the high pressure sealing requirement between the lower end surface of restricting orifice (5) and the recessed end face three (22) of oil sprayer lower body (7).
6. a kind of separated fuel injection body according to claim 1, the compact siro spinning technology described in it is characterized in that with high pressure sealing function is: for close contact connects between the lower end surface of described restricting orifice (5) and the upper-end surface of transition part one (23); For close contact connects between the lower end surface of transition part one (23) and the end face (20) of oil sprayer lower body (7); The screw thread one (15) of oil sprayer upper body (6) and the screw thread two (19) of oil sprayer lower body (7) form axial force after mounting, and this axial force meets the high pressure sealing requirement between high pressure sealing requirement between the lower end surface of restricting orifice (5) and the upper-end surface of transition part one (23), the lower end surface of transition part one (23) and the end face (20) of oil sprayer lower body (7).
7. a kind of separated fuel injection body according to claim 1, the compact siro spinning technology described in it is characterized in that with high pressure sealing function is: described oil sprayer lower body (7) machined recessed end face three (22); Be close contact connection between the lower end surface of restricting orifice (5) and the upper-end surface with the transition part two (24) of shoulder feature; For close contact connects between the circular bead surface of transition part two (24) and the end face (20) of oil sprayer lower body (7); The screw thread one (15) of oil sprayer upper body (6) and the screw thread two (19) of oil sprayer lower body (7) form axial force after mounting, and this axial force meets the high pressure sealing requirement between high pressure sealing requirement between the lower end surface of restricting orifice (5) and the upper-end surface of transition part two (24), the circular bead surface of transition part two (24) and the end face (20) of oil sprayer lower body (7).
8. a kind of separated fuel injection body according to claim 1, the compact siro spinning technology described in it is characterized in that with high pressure sealing function is: described oil sprayer lower body (7) machined recessed end face three (22); For close contact connects between the lower end surface of restricting orifice (5) and the upper-end surface of transition part three (25), for close contact connects between the lower end surface of transition part three (25) and the recessed end face three (22) of oil sprayer lower body (7); The screw thread one (15) of oil sprayer upper body (6) and the screw thread two (19) of oil sprayer lower body (7) form axial force after mounting, and this axial force meets the high pressure sealing requirement between high pressure sealing requirement between the lower end surface of restricting orifice (5) and the upper-end surface of transition part three (25), the lower end surface of transition part three (25) and the recessed end face three (22) of oil sprayer lower body (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520096840.2U CN204572298U (en) | 2015-02-11 | 2015-02-11 | A kind of separated fuel injection body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520096840.2U CN204572298U (en) | 2015-02-11 | 2015-02-11 | A kind of separated fuel injection body |
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| Publication Number | Publication Date |
|---|---|
| CN204572298U true CN204572298U (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520096840.2U Withdrawn - After Issue CN204572298U (en) | 2015-02-11 | 2015-02-11 | A kind of separated fuel injection body |
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| Country | Link |
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| CN (1) | CN204572298U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653374A (en) * | 2015-02-11 | 2015-05-27 | 江苏大学 | Split type oil injector body |
-
2015
- 2015-02-11 CN CN201520096840.2U patent/CN204572298U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653374A (en) * | 2015-02-11 | 2015-05-27 | 江苏大学 | Split type oil injector body |
| CN104653374B (en) * | 2015-02-11 | 2017-04-12 | 江苏大学 | Split type oil injector body |
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Granted publication date: 20150819 Effective date of abandoning: 20170412 |
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