CN202157889U - Electronic control oil injector - Google Patents
Electronic control oil injector Download PDFInfo
- Publication number
- CN202157889U CN202157889U CN2011202654844U CN201120265484U CN202157889U CN 202157889 U CN202157889 U CN 202157889U CN 2011202654844 U CN2011202654844 U CN 2011202654844U CN 201120265484 U CN201120265484 U CN 201120265484U CN 202157889 U CN202157889 U CN 202157889U
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- Prior art keywords
- valve
- valve seat
- oil
- electronic control
- oil outlet
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Abstract
An electronic control oil injector solves the problems that the existing needle valve has large machining difficulty, the sealing performance between the needle valve and a valve seat is bad and the like. The electronic control oil injector comprises an oil inlet pipe, an oil outlet pipe, a valve rod, a valve seat and a cap; an oil inlet is arranged at the axle center of the oil inlet pipe; a through hole is arranged at the center of the valve seat; the valve seat is sleeved in the oil outlet pipe and forms an accommodating cavity in the oil outlet pipe; a spherical sealing element is welded at one end of the valve rod; and a sealing surface matched with the spherical sealing element is arranged on the valve seat. The electronic control oil injector has the beneficial effect that the valve rod of the needle valve and the spherical sealing element adopt split structures, so that the manufacturing difficulty of the needle valve is greatly reduced, and the machining cost is reduced. Moreover, the spherical sealing element can be automatically positioned at the position, and valve bodies are symmetrical, so that the installation is more convenient, and the sealing is more complete. Furthermore, a spherical valve also has the lowest flow resistance (In fact, the flow resistance is zero), can be quickly opened and closed and also can better respond an oil injection command issued by an ECU (electronic control unit).
Description
Technical field
The utility model relates to a kind of engine fuel injector field, is specifically related to a kind of electric-controlled fuel injector.
Background technique
Oil sprayer itself is a normally close valve (meaning of normally close valve is when not importing pilot signal, and valve is in closed condition always), is moved up and down the switching of control valve by a needle.When ECU assigns oil spout when instruction, its voltage signal can make the electric current coil in the oil sprayer of flowing through, and produces magnetic field and picks up needle, lets valve opening that oil plant can be sprayed from nozzle opening.The great advantage of spraying fuel feeding be exactly fuel delivery control very accurately, let engine under any state, correct air fuel ratio can both be arranged, it is smooth and easy not only to let the engine maintenance turn round, its waste gas also can conform with the standard of environmental regulation.
As the oil sprayer of one of critical component of BBG, needle-valve and valve base sealing in the oil sprayer are bad, will cause oil sprayer atomization badness or oil dripping, with the performance that directly influences motor.Axonometer on the existing needle-valve and valve rod are integral structure, and needle-valve and valve seat adopt end face seal, because the sealing requirements of needle-valve and valve seat is higher; So require very high to needle-valve precision and flatness; Difficulty of processing is increased, and processing cost increases, and when mounted; Coaxality to needle-valve requires height, has increased installation difficulty.
Summary of the invention
For overcoming problem in the background technique, avoid existing needle-valve difficulty of processing big, problems such as needle-valve and valve base sealing property difference, the utility model provides a kind of electric-controlled fuel injector.
The technological scheme of the utility model is: a kind of electric-controlled fuel injector; Comprise oil inlet pipe, oil outlet tube, valve rod, valve seat and block; The place, axle center of described oil inlet pipe is provided with filler opening, and said centre place is provided with through hole, and described valve seat is sheathed in the oil outlet tube and in oil outlet tube, forms holding cavity; Described valve rod one end is welded with the ball-type Sealing, and described valve seat is provided with and the suitable sealing surface of ball-type Sealing.
As a kind of improvement of the utility model, the inwall of said valve seat is straight tubular, and said ball-type Sealing sidewall mills to put down and matches with the inwall of valve seat.
As a kind of improvement of the utility model, be provided with dividing plate between said valve seat and the block, described dividing plate is provided with aperture, and the diameter of aperture is less than the diameter in hole on the valve seat on the said dividing plate.
As a kind of improvement of the utility model, the sealing surface on the said valve seat is taper.
The beneficial effect of the utility model is that the valve rod of needle-valve and ball-type Sealing adopt split-type structural, greatly reduce the manufacture difficulty of needle-valve, and processing cost is reduced.And the ball-type Sealing can be on the position location automatically, the valve body symmetry makes and installs more conveniently, seals more complete.And ball valve also has minimum flow resistance (be actually zero), can realize fast opening and closing, can better respond the oil spout instruction that ECU assigns.
Description of drawings
Accompanying drawing 1 is the utility model embodiment's a structural representation.
Accompanying drawing 2 is the explosive view of Fig. 1 among the utility model embodiment.
Accompanying drawing 3 is the enlarged view of the I of Fig. 1 among the utility model embodiment.
Among the figure, valve rod 1, valve seat 2, block 3, dividing plate 4, ball-type Sealing 5, oil inlet pipe 6, oil outlet tube 7, holding cavity 71.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described further:
Combine Fig. 2, shown in Figure 3 by Fig. 1; A kind of electric-controlled fuel injector comprises oil inlet pipe 6, oil outlet tube 7, valve rod 1, valve seat 2 and blocks a shot 3, and the place, axle center of described oil inlet pipe 6 is provided with filler opening; Said valve seat 2 centers are provided with through hole; Described valve seat 2 is sheathed in the oil outlet tube 7 and in oil outlet tube 7, forms holding cavity 71, and high pressure oil is got into by the place, axle center of oil inlet pipe 6, in the permeability hole inflow holding cavity 71 of valve rod 1 head; Described valve rod 1 one ends are welded with ball-type Sealing 5, and described valve seat 2 is provided with the sealing surface suitable with ball-type Sealing 5.Oil sprayer is a normally close valve, and high pressure oil is got in the permeability hole inflow holding cavity of valve rod head by the place, axle center of oil inlet pipe, and do not open for oil sprayer this moment, and high pressure oil is in the holding cavity stored.When ECU assigns oil spout when instruction, its voltage signal can make the electric current coil in the oil sprayer of flowing through, and produces magnetic field and picks up valve rod and ball-type Sealing, lets valve opening that oil plant can be sprayed from nozzle opening, forms vaporificly, is convenient to abundant burning.The valve rod of needle-valve and ball-type Sealing adopt split-type structural, greatly reduce the manufacture difficulty of needle-valve, and processing cost is reduced.And the ball-type Sealing can be on the position location automatically, the valve body symmetry makes and installs more conveniently, seals more complete.And ball valve also has minimum flow resistance (be actually zero), can realize fast opening and closing, can better respond the oil spout instruction that ECU assigns.
The inwall of said valve seat 2 is straight tubular, and the sidewall of said ball-type Sealing 5 mills flat suitable with valve base inner wall.Because the sidewall of ball-type Sealing mills flat suitable with valve seat, forms sealing strip, further guarantees the sealing of oil sprayer, and when magnetic field picked up valve rod and ball-type Sealing, the oily passage of the mistake that forms between Sealing and the valve seat formed tempered oil film more easily.
Said valve seat 2 and block a shot and be provided with dividing plate 4 between 3, described dividing plate 4 is provided with aperture, and the diameter of aperture is less than the diameter in hole on the valve seat 2 on the said dividing plate 4.Owing to be provided with dividing plate, dividing plate is provided with aperture, has also improved high pressure oil go out the to block a shot speed of spray orifice, is beneficial to the high pressure oil atomization.
Sealing surface on the said valve seat 2 is taper.Conical seal (contact) face on the valve seat can play the effect of further sealing.
Sealing surface on the utility model embodiment valve seat 2 is for also being ball-type.
Every technician's notice: though the utility model is described according to above-mentioned embodiment; But the invention thought of the utility model is not limited in this model utility; The repacking of any utilization inventive concept all will be included in this patent scope of patent protection.
Claims (4)
1. electric-controlled fuel injector; Comprise oil inlet pipe (6), oil outlet tube (7), valve rod (1), valve seat (2) and block (3); The place, axle center of described oil inlet pipe (6) is provided with filler opening; Said valve seat (2) center is provided with through hole; Described valve seat (2) is sheathed in the oil outlet tube (7) and in oil outlet tube (7), forms holding cavity (71), and it is characterized in that: described valve rod (1) one end is welded with ball-type Sealing (5), and described valve seat (2) is provided with and the suitable sealing surface of ball-type Sealing (5).
2. electric-controlled fuel injector according to claim 1, the inwall that it is characterized in that said valve seat (2) is straight tubular, the sidewall of said ball-type Sealing (5) mills flat suitable with valve seat (2) inwall.
3. electric-controlled fuel injector according to claim 1 and 2; It is characterized in that being provided with dividing plate (4) between said valve seat (2) and the block (3); Described dividing plate (4) is provided with aperture, and said dividing plate (4) is gone up the diameter of aperture and gone up the diameter in hole less than valve seat (2).
4. electric-controlled fuel injector according to claim 1 is characterized in that the sealing surface on the said valve seat (2) is taper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202654844U CN202157889U (en) | 2011-07-25 | 2011-07-25 | Electronic control oil injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202654844U CN202157889U (en) | 2011-07-25 | 2011-07-25 | Electronic control oil injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202157889U true CN202157889U (en) | 2012-03-07 |
Family
ID=45765530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202654844U Expired - Lifetime CN202157889U (en) | 2011-07-25 | 2011-07-25 | Electronic control oil injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202157889U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109513367A (en) * | 2018-12-23 | 2019-03-26 | 杭州宝积生物科技有限公司 | A kind of fueling injection equipment of feed mixing machine |
-
2011
- 2011-07-25 CN CN2011202654844U patent/CN202157889U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109513367A (en) * | 2018-12-23 | 2019-03-26 | 杭州宝积生物科技有限公司 | A kind of fueling injection equipment of feed mixing machine |
| CN109513367B (en) * | 2018-12-23 | 2024-03-29 | 杭州宝积生物科技有限公司 | Oil injection device of feed mixer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: High pressure common rail electric control fuel injector sealing device Effective date of registration: 20140513 Granted publication date: 20120307 Pledgee: Zhejiang Ruian rural cooperative bank square sub branch Pledgor: Wenzhou Baton Eletronic Technology Co., Ltd. Registration number: 2014990000351 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120307 |
|
| CX01 | Expiry of patent term |