CN205101157U - Injector nozzle matching parts of reverse seal receptacle face differential seat angle - Google Patents
Injector nozzle matching parts of reverse seal receptacle face differential seat angle Download PDFInfo
- Publication number
- CN205101157U CN205101157U CN201520911128.3U CN201520911128U CN205101157U CN 205101157 U CN205101157 U CN 205101157U CN 201520911128 U CN201520911128 U CN 201520911128U CN 205101157 U CN205101157 U CN 205101157U
- Authority
- CN
- China
- Prior art keywords
- needle
- valve
- nozzle
- seal receptacle
- valve body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides an injector nozzle matching parts of reverse seal receptacle face differential seat angle, including the nozzle valve needle valve interior with locating nozzle valve, be equipped with flourishing oil groove in the nozzle valve, nozzle valve's upper end is equipped with the oil feed passageway of the flourishing oil groove of intercommunication, nozzle valve's lower extreme is equipped with the nozzle opening, the nozzle valve bottom is equipped with the seal receptacle face of slope, the cross -section angle of seal receptacle face is 60, the bottom of needle valve is equipped with the needle valve conical surface, be equipped with on the needle valve conical surface and the seal receptacle face between be the sealed loop -line of sealed complex, the cross -section angle of the needle valve conical surface that the quadrate part divides on the sealing ring line is 59. The utility model discloses simple structure easily realizes in the aspect of processing technology, at global architecture, the overall dimension who does not change the even piece of fuel injection nozzle, has realized that the adaptation is high -power, and large -traffic operating mode scope is used, just more has to utilize sealing up of injector nozzle matching parts.
Description
Technical field
The utility model relates to P type system example injector nozzle matching parts, particularly relates to a kind of injector nozzle matching parts of reverse sealed seat surface differential seat angle.
Background technique
At present, Oil-Spray Match Parts is made up of needle-valve and needle-valve body, is widely used in the fields such as Vehicle Engineering machinery, generator set, power range 50 ~ 300KW flow that it is suitable for, and range of flow is 700 ~ 2200ml/min.As shown in Figure 2, the needle valve seat surface angle of forward sealed seat surface differential seat angle is 60 °, and the seat surface angle of needle-valve body is 59 °, has+1 ° of differential seat angle between them.Specific demand high power engine is had for some, flow is greater than 2200ml/min, obviously exceeded its Applicable scope, wanted to expand Applicable scope, usually only have increasing needle lift, and increase needle lift and can cause the impact stress of seat surface larger, direct reliability and the working life affecting product, due to lift increase, make needle-valve move up and down stroke strengthen, needle-valve may be caused not close in time, and easily causing combustion gas to pour in down a chimney affects the performance of product.
Model utility content
The utility model will solve above-mentioned prior art Problems existing, provides a kind of injector nozzle matching parts of reverse sealed seat surface differential seat angle, reduces the fuel pressure loss at place of pressure chamber, improves the contribution rate of high pressure fuel.
The utility model solves the technological scheme that its technical problem adopts: the injector nozzle matching parts of this reverse sealed seat surface differential seat angle, comprise needle-valve body and be located at the needle-valve in needle-valve body, oil holding slot is provided with in needle-valve body, the upper end of needle-valve body is provided with the oil inlet passage being communicated with oil holding slot, the lower end of needle-valve body is provided with nozzle opening, the sealed seat surface of inclination is provided with bottom needle-valve body, the cross section angle of sealed seat surface is 60 °, the bottom of needle-valve is provided with face of needle seating, face of needle seating is provided with between sealed seat surface in the sealing loop wire be sealed and matched, the cross section angle of the face of needle seating of sealing loop wire upper section is 59 °.
The injector nozzle matching parts of this reverse sealed seat surface differential seat angle, needle-valve top end has positioning hole, and needle-valve body sidewall is provided with oil inlet passage, connects the Sheng groove oil of an annular space under oil inlet passage, be provided with pressure chamber bottom needle-valve body, in pressure chamber, wall circular is provided with the spray orifice that quantity does not wait.The cross section angle of sealed seat surface is 60 °, and the cross section angle of the face of needle seating of sealing loop wire upper section is 59 °, and the frustoconical bevel angle of such needle-valve body is greater than the frustoconical bevel angle of needle-valve, forms the differential seat angle of+1 °, and this is just defined as reverse sealed seat surface differential seat angle.The circulation area of this Oil-Spray Match Parts strengthens, its high-pressure oil passage minimum flow area occurs in sealing loop wire upper section, can reduce flow by a relatively large margin to dam, and the high-pressure oil passage minimum flow area of forward sealed seat surface differential seat angle occurs in sealing loop wire inferior portion, flow loss is large.The transformation fuel pressure loss of Oil-Spray Match Parts pressure chamber reduces to 50% of existing product, and these 2 just make the fuel delivery of oil nozzle greatly improve, ensure that the demand of high power engine.
Due to moving down of sealing loop wire, the diameter of sealing loop wire diminishes, and under the effect of identical initial tension of spring, the pressure of unit area increases, more be conducive to sealing, sealed diameter diminishes simultaneously, the volume bottom potted line to pressure chamber is reduced, is more beneficial to the up to standard of emission request.
In order to perfect further, the part that needle-valve is positioned at oil holding slot is provided with about one group compensating groove spaced apart.Solve the self contering problem that needle-valve moves up and down.
The effect that the utility model is useful is: the utility model structure is simple, be easy to realize in processing technology, do not changing general structure, the boundary dimension of Oil-Spray Match Parts, achieve adaptation high-power, the condition range of large discharge uses, and more has the sealing utilizing injector nozzle matching parts.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of needle-valve body and needle valve bottom end part in prior art;
Fig. 3 is the structural representation of needle-valve body and needle valve bottom end part in the utility model.
Description of reference numerals: needle-valve body 1, needle-valve 2, compensating groove 2-1, oil holding slot 3, oil inlet passage 4, nozzle opening 5, sealed seat surface 6, face of needle seating 7, sealing loop wire 8.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
With reference to accompanying drawing: the injector nozzle matching parts of reverse sealed seat surface differential seat angle in the present embodiment, the needle-valve 2 comprising needle-valve body 1 and be located in needle-valve body 1, oil holding slot 3 is provided with in needle-valve body 1, the upper end of needle-valve body 1 is provided with the oil inlet passage 4 being communicated with oil holding slot 3, the lower end of needle-valve body 1 is provided with nozzle opening 5, the sealed seat surface 6 of inclination is provided with bottom needle-valve body 1, the cross section angle of sealed seat surface 6 is 60 °, the bottom of needle-valve 2 is provided with face of needle seating 7, face of needle seating 7 is provided with between sealed seat surface 6 in the sealing loop wire 8 be sealed and matched, the cross section angle of the face of needle seating 7 of sealing loop wire 8 upper section is 59 °.The part that wherein needle-valve 2 is positioned at oil holding slot 3 is provided with about one group compensating groove 2-1 spaced apart.
Working principle of the present utility model: during oil spout, needle-valve 2 upwardly opens, oil enters from the oil inlet passage 4 of needle-valve body 1 sidewall, through sealed seat surface 6 to pressure chamber, sprays from spray orifice 5.When needle-valve 2 couple is closed, needle-valve 2, under initial tension of spring effect, makes face of needle seating 7 push down sealed seat surface 6.
Although the utility model has illustrated by reference to preferred embodiment and has described, those skilled in the art should understand, and in the scope of claims, can do the various change in form and details.
Claims (2)
1. the injector nozzle matching parts of a reverse sealed seat surface differential seat angle, comprise needle-valve body (1) and be located at the needle-valve (2) in needle-valve body (1), oil holding slot (3) is provided with in needle-valve body (1), the upper end of needle-valve body (1) is provided with the oil inlet passage (4) being communicated with oil holding slot (3), the lower end of needle-valve body (1) is provided with nozzle opening (5), it is characterized in that: described needle-valve body (1) bottom is provided with the sealed seat surface (6) of inclination, the cross section angle of sealed seat surface (6) is 60 °, the bottom of needle-valve (2) is provided with face of needle seating (7), face of needle seating (7) is provided with between sealed seat surface (6) in the sealing loop wire (8) be sealed and matched, the cross section angle of the face of needle seating (7) of sealing loop wire (8) upper section is 59 °.
2. the injector nozzle matching parts of reverse sealed seat surface differential seat angle according to claim 1, is characterized in that: the part that described needle-valve (2) is positioned at oil holding slot (3) is provided with about one group compensating groove (2-1) spaced apart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520911128.3U CN205101157U (en) | 2015-11-16 | 2015-11-16 | Injector nozzle matching parts of reverse seal receptacle face differential seat angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520911128.3U CN205101157U (en) | 2015-11-16 | 2015-11-16 | Injector nozzle matching parts of reverse seal receptacle face differential seat angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205101157U true CN205101157U (en) | 2016-03-23 |
Family
ID=55516939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520911128.3U Expired - Fee Related CN205101157U (en) | 2015-11-16 | 2015-11-16 | Injector nozzle matching parts of reverse seal receptacle face differential seat angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205101157U (en) |
-
2015
- 2015-11-16 CN CN201520911128.3U patent/CN205101157U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 Termination date: 20171116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |