CN103047061A - Controlled injection flat valve mechanism of electrical oil injector - Google Patents
Controlled injection flat valve mechanism of electrical oil injector Download PDFInfo
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- CN103047061A CN103047061A CN2013100086281A CN201310008628A CN103047061A CN 103047061 A CN103047061 A CN 103047061A CN 2013100086281 A CN2013100086281 A CN 2013100086281A CN 201310008628 A CN201310008628 A CN 201310008628A CN 103047061 A CN103047061 A CN 103047061A
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- flat valve
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- restricting orifice
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Abstract
The invention relates to a controlled injection flat valve mechanism of an electrical oil injector. A sealing face is arranged on the lower end face of a control flat valve, a control chamber, an oil inlet orifice, a throttling orifice plate oil inlet, a connecting oil hole, a return oil orifice and a throttling orifice plate lower oil hole are arranged on a throttling orifice plate, the aperture of the oil inlet orifice is smaller than that of the throttling orifice plate oil inlet, the aperture of the oil inlet orifice is smaller than that of the connecting oil hole, the aperture of the return oil orifice is smaller than that of the throttling orifice plate lower oil hole, the throttling orifice plate oil inlet is communicated with the oil inlet orifice, the oil inlet orifice is communicated with the connecting oil hole, the connecting oil hole is communicated with the control chamber, the control chamber is communicated with the throttling orifice plate lower oil hole, the throttling orifice plate lower oil hole is communicated with the return oil orifice, an inner ring groove, an outer ring groove and a deflecting groove are arranged on the lower end face of the control flat valve or on the upper end face of the throttling orifice plate, the outer ring groove is sleeved outside the inner ring groove, the outer ring groove is communicated with the inner ring groove through the deflecting groove, and the inner ring groove is selectively communicated with the return oil orifice under the effect of the sealing face of the control flat valve. By the aid of the controlled injection flat valve mechanism, the processing difficulty is reduced, and the tightness and the production rate are improved.
Description
Technical field
The present invention relates to a kind of electric-controlled fuel injector parts, flat valve mechanism is sprayed in especially a kind of control of electric-controlled fuel injector.
Background technique
Because the Electrocontrolled high-pressure common rail fuel injection system is compared with traditional mechanical type oil-fired system, have the engine noise of reduction, reduce significant advantages such as discharging, improve Economy, therefore be widely applied abroad.At home, because the requirement of Abgasgesetz constantly promotes, high pressure co-rail system has become inevitable choice.
Electric-controlled fuel injector is the critical component of this system, it can realize the idealized control to fuel injection characteristic, can realize multi-injection, in order to realize the quick opening and closing of electric-controlled fuel injector, utilize the pressure difference at control piston two ends to control opening and closing, characteristic according to liquid, utilize this principle to satisfy reflecting requirement fast to electric-controlled fuel injector fully, for the control room that guarantees the control piston two ends can seal under higher pressure, very high to relevant workpiece requirement, owing to there is numerous parts to fit together, the relative position degree is difficult to guarantee, in order to reach requirement, processing cost is very high, and it is very high to cut reject rate.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of control that can reduce the electric-controlled fuel injector of difficulty of processing, raising sealing and productivity to spray flat valve mechanism.
According to technological scheme provided by the invention, flat valve mechanism is sprayed in the control of described electric-controlled fuel injector, and it comprises control flat valve and restricting orifice, and the lower end surface of described control flat valve has sealing surface; The control room that offers at restricting orifice, the oil-inlet economizing hole, the restricting orifice oil inlet hole, connect oilhole, oilhole under meter out hole and the restricting orifice, the aperture in oil-inlet economizing hole is less than the aperture of restricting orifice oil inlet hole, the aperture in oil-inlet economizing hole is less than the aperture that connects oilhole, the aperture in meter out hole is less than the aperture of oilhole under the restricting orifice, the restricting orifice oil inlet hole is communicated with the oil-inlet economizing hole, the oil-inlet economizing hole be connected oilhole and be communicated with, connecting oilhole is communicated with the control room, the control room is communicated with oilhole under the restricting orifice, and oilhole is communicated with the meter out hole under the restricting orifice; Offer inner groove, outer groove and guiding gutter in the lower end surface of control flat valve or the upper-end surface of restricting orifice, outer groove is enclosed within the outside of inner groove, outer groove is communicated with by guiding gutter with inner groove, and inner groove is communicated with described meter out hole selectivity under the sealing surface effect of control flat valve.
The lower end surface integral body of control flat valve is the plane and is sealing surface, offer inner groove, outer groove and guiding gutter in the upper-end surface of restricting orifice, outer groove is enclosed within the outside of inner groove, outer groove is communicated with by guiding gutter with inner groove, and inner groove is communicated with described meter out hole selectivity under the sealing surface effect of control flat valve.
The lower end surface of control flat valve has sealing surface, the upper-end surface of restricting orifice is the plane, lower end surface at the control flat valve offers inner groove, outer groove and guiding gutter, outer groove is enclosed within the outside of inner groove, outer groove is communicated with by guiding gutter with inner groove, inner groove is communicated with described meter out hole selectivity under the sealing surface effect of control flat valve, and fit in the control flat valve lower end surface within the inner circle of inner groove and the upper-end surface of restricting orifice, fitting in the lower end surface of the control flat valve between the cylindrical of inner groove and the inner circle of outer groove and the upper-end surface of restricting orifice, fits and form seal band in the upper-end surface of the restricting orifice in the lower end surface of the control flat valve within the inner circle of inner groove and the meter out hole oil return outlet end outside.
Outside diameter 0.8≤the mm of described seal band, and the interior circular diameter 〉=0.3mm of seal band.
The degree of depth of described inner groove is less than the degree of depth of outer groove.
The diversed groove in plane between the cylindrical of described inner groove and the inner circle of outer groove is divided into 3 ~ 8 five equilibriums.
The size of seal contact face of described control flat valve is greater than the oil return outlet end diameter in meter out hole.
The present invention has reduced difficulty of processing, has improved sealing and productivity.
Description of drawings
Fig. 1 is the schematic representation of installing and using of the present invention.
Fig. 2 is the enlarged diagram of restricting orifice among the embodiment 1.
Fig. 3 is the plan view of restricting orifice among Fig. 2.
Fig. 4 is the structural representation of control flat valve among the embodiment 1.
Fig. 5 is the partial structurtes schematic representation of the embodiment of the invention 2.
Fig. 6 is the plan view of restricting orifice among Fig. 5.
Fig. 7 is the worm's eye view of control flat valve among the embodiment 2.
Fig. 8 is the A-A sectional view of Fig. 7.
Embodiment
The invention will be further described below in conjunction with specific embodiment.
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, flat valve mechanism is sprayed in the control of electric-controlled fuel injector, and it comprises control flat valve 8 and restricting orifice 9, and the lower end surface of described control flat valve 8 has sealing surface; Offer control room 28 at restricting orifice 9, oil-inlet economizing hole 27, restricting orifice oil inlet hole 29, connect oilhole 30, oilhole 25 under meter out hole 24 and the restricting orifice, the aperture in oil-inlet economizing hole 27 is less than the aperture of restricting orifice oil inlet hole 29, the aperture in oil-inlet economizing hole 27 is less than the aperture that connects oilhole 30, the aperture in meter out hole 24 is less than the aperture of oilhole under the restricting orifice 25, restricting orifice oil inlet hole 29 is communicated with oil-inlet economizing hole 27, oil-inlet economizing hole 27 be connected oilhole 30 and be communicated with, connecting oilhole 30 is communicated with control room 28, control room 28 is communicated with oilhole 25 under the restricting orifice, and oilhole 25 is communicated with meter out hole 24 under the restricting orifice; Offer inner groove 23, outer groove 22 and guiding gutter 21 in the lower end surface of control flat valve 8 or the upper-end surface of restricting orifice 9, outer groove 22 is enclosed within the outside of inner groove 23, outer groove 22 is communicated with by guiding gutter 21 with inner groove 23, and inner groove 23 is communicated with described meter out hole 24 selectivity under the sealing surface effect of control flat valve 8.
The lower end surface integral body of control flat valve 8 is the plane and is sealing surface, offer inner groove 23, outer groove 22 and guiding gutter 21 in the upper-end surface of restricting orifice 9, outer groove 22 is enclosed within the outside of inner groove 23, outer groove 22 is communicated with by guiding gutter 21 with inner groove 23, and inner groove 23 is communicated with described meter out hole 24 selectivity under the sealing surface effect of control flat valve 8.
The degree of depth of described inner groove 23 is less than the degree of depth of outer groove 22.
The diversed groove 21 in plane between the inner circle of the cylindrical of described inner groove 23 and outer groove 22 is divided into 3 ~ 8 five equilibriums.
The size of seal contact face of described control flat valve 8 is greater than the oil return outlet end diameter in meter out hole 24.
Embodiment 2
Such as Fig. 5, Fig. 6, Fig. 7 and shown in Figure 8, the lower end surface of control flat valve 8 has sealing surface, the upper-end surface of restricting orifice 9 is the plane, offer control room 28 at restricting orifice 9, oil-inlet economizing hole 27, restricting orifice oil inlet hole 29, connect oilhole 30, oilhole 25 under meter out hole 24 and the restricting orifice, the aperture in oil-inlet economizing hole 27 is less than the aperture of restricting orifice oil inlet hole 29, the aperture in oil-inlet economizing hole 27 is less than the aperture that connects oilhole 30, the aperture in meter out hole 24 is less than the aperture of oilhole under the restricting orifice 25, restricting orifice oil inlet hole 29 is communicated with oil-inlet economizing hole 27, oil-inlet economizing hole 27 be connected oilhole 30 and be communicated with, connecting oilhole 30 is communicated with control room 28, control room 28 is communicated with oilhole 25 under the restricting orifice, and oilhole 25 is communicated with meter out hole 24 under the restricting orifice; Lower end surface at control flat valve 8 offers inner groove 23, outer groove 22 and guiding gutter 21, outer groove 22 is enclosed within the outside of inner groove 23, outer groove 22 is communicated with by guiding gutter 21 with inner groove 23, inner groove 23 is communicated with described meter out hole 24 selectivity under the sealing surface effect of control flat valve 8, and fit in control flat valve 8 lower end surfaces within the inner circle of inner groove 23 and the upper-end surface of restricting orifice 9, fitting in the lower end surface of the control flat valve 8 between the inner circle of the cylindrical of inner groove 23 and outer groove 22 and the upper-end surface of restricting orifice 9, fits and form seal band in the upper-end surface of the restricting orifice 9 in the lower end surface of the control flat valve 8 within the inner circle of inner groove 23 and the meter out hole 24 oil return outlet end outside.
Outside diameter≤the 0.8mm of described seal band, and the interior circular diameter 〉=0.3mm of seal band.
The degree of depth of described inner groove 23 is less than the degree of depth of outer groove 22.
The diversed groove 21 in plane between the inner circle of the cylindrical of described inner groove 23 and outer groove 22 is divided into 3 ~ 8 five equilibriums.
The size of seal contact face of described control flat valve 8 is greater than the oil return outlet end diameter in meter out hole 24.
The control of electric-controlled fuel injector of the present invention is sprayed when flat valve mechanism uses and is installed in the oil injector body, oil injector body is: offer oil sprayer shell oilhole 11.1 in oil sprayer shell 11, oil sprayer shell oilhole 11.1 is communicated with oil-feed interface on the oil sprayer shell 11, in oil sprayer shell 11, be provided with grommet 5 and control valve couple 6, control valve couple 6 is positioned at the below of grommet 5, offer control valve couple oilhole 6.1 in control valve couple 6, below restricting orifice 9, be provided with control piston cover 10, offer control piston cover oilhole 26 at control piston cover 10, control piston cover oilhole 26 is communicated with restricting orifice oil inlet hole 29, oil sprayer shell oilhole 11.1 is communicated with control piston cover oilhole 26, overlap 10 interior sliding plugs at control piston control piston 34 is arranged, the underpart of oilhole 25 under the upper-end surface selective shut-off restricting orifice of control piston 34, upper end at oil sprayer shell 11 is fixed with electromagnet 1 by the very tight cap 3 of electromagnetism, has solenoid valve spring 4 in the electromagnet 1, be connected with armature 7 in the underpart of solenoid valve spring 4, offer armature runner 7.1 at armature 7, be welded with armature lever at armature 7, be fixed with adjustment ball 20 in the underpart of armature lever, be provided with control flat valve 8 in the control valve couple 6 below armature lever, the upper-end surface of control flat valve 8 is provided with sphere depression 33, be fixed with nozzle cap nut 18 in the lower end of oil sprayer shell 11, fuel injector boss 17 is installed in nozzle cap nut 18, in fuel injector boss 17, be provided with oil nozzle, in fuel injector boss 17, offer fuel injector boss oilhole 17.1, in the nozzle cap nut 18 above fuel injector boss 17 intermediate 15 is installed, in intermediate 15, offer intermediate oilhole 15.1, described oil sprayer shell oilhole 11.1 is communicated with intermediate oilhole 15.1, intermediate oilhole 15.1 is communicated with fuel injector boss oilhole 17.1, is fixed with locating stud 16 at intermediate 15; In the lower end of oil sprayer shell 11, be provided with push rod 14, the underpart of push rod 14 and the upper end portion of oil nozzle offset, the underpart of the upper end portion of push rod 14 and control piston 34 offsets, outer cover is connected to push rod guide pad 19 in the upper end of push rod 14, push rod 14 below push rod guide pad 19 is provided with pressure adjusting spring 13, and the underpart of pressure adjusting spring 13 and push rod 14 lower end bulge loops offset.
Be provided with spring and adjust pad 2 in electromagnet 1, the upper end portion of described solenoid valve spring 4 and spring are adjusted pad 2 and are offseted.
Push rod 14 below push rod guide pad 19 is socketed with pressure regulation pad 12, and the upper end portion of described pressure adjusting spring 13 and pressure regulation pad 12 offset.
High pressure fuel enters the restricting orifice oil inlet hole 29 of restricting orifice 9 by the control piston cover oilhole 26 on the control piston cover 10, oil-inlet economizing hole 27, connect oilhole 30 and enter control room 28, control room 28 is synthetic by the gap between restricting orifice 9 and the control piston cover 10, its effect is the fuel oil of its internal memory certain pressure, make pressure-acting in control piston 34 axial direction to-and-fro motion, when control flat valve 8 lifts, fuel oil in the control room 28 is by oilhole 25 under the restricting orifice on the restricting orifice 9, meter out hole 24 flows in the inner groove 23, flow to larger outer groove 22 through guiding gutter 21 again, then evenly flow out around the fuel oil; When the fuel oil in the control room 28 by the restricting orifice on the restricting orifice 9 under oilhole 25 places, the fuel pressure in control room 28 descends, and the connection oilhole 30 of restricting orifice 9 enters control room 28 amount of fuel less than the oil mass that flows out by oilhole under the restricting orifice on the restricting orifice 9 25, when control flat valve 8 lifts, control room 28 interior oil pressure can't be set up, like this under the effect of control piston 34 the other end power, control piston 34 is to the direction motion of restricting orifice 9, when control flat valve 8 falls, fit in the lower end surface of control flat valve 8 and the upper-end surface of restricting orifice 9, fuel oil flow pass in the control room 28 is truncated, connection oilhole 30 by restricting orifice 9 enters control room 28 fuel oils and is on the increase, when control room 28 fuel pressures reach certain value, control piston 34 is pushed the direction motion away from restricting orifice 9, and this moment, whole control valve was finished a motion.In its working procedure, repeat such circulation.
Claims (7)
1. flat valve mechanism is sprayed in the control of an electric-controlled fuel injector, it is characterized in that: it comprises control flat valve (8) and restricting orifice (9), and the lower end surface of described control flat valve (8) has sealing surface; Offer control room (28) at restricting orifice (9), oil-inlet economizing hole (27), restricting orifice oil inlet hole (29), connect oilhole (30), oilhole (25) under meter out hole (24) and the restricting orifice, the aperture in oil-inlet economizing hole (27) is less than the aperture of restricting orifice oil inlet hole (29), the aperture in oil-inlet economizing hole (27) is less than the aperture that connects oilhole (30), the aperture in meter out hole (24) is less than the aperture of oilhole under the restricting orifice (25), restricting orifice oil inlet hole (29) is communicated with oil-inlet economizing hole (27), oil-inlet economizing hole (27) be connected oilhole (30) and be communicated with, connecting oilhole (30) is communicated with control room (28), control room (28) is communicated with oilhole (25) under the restricting orifice, and oilhole under the restricting orifice (25) is communicated with meter out hole (24); Offer inner groove (23), outer groove (22) and guiding gutter (21) in the lower end surface of control flat valve (8) or the upper-end surface of restricting orifice (9), outer groove (22) is enclosed within the outside of inner groove (23), outer groove (22) is communicated with by guiding gutter (21) with inner groove (23), and inner groove (23) is communicated with described meter out hole (24) selectivity under the sealing surface effect of control flat valve (8).
2. flat valve mechanism is sprayed in the control of electric-controlled fuel injector as claimed in claim 1, it is characterized in that: the lower end surface integral body of control flat valve (8) is for the plane and be sealing surface, offer inner groove (23), outer groove (22) and guiding gutter (21) in the upper-end surface of restricting orifice (9), outer groove (22) is enclosed within the outside of inner groove (23), outer groove (22) is communicated with by guiding gutter (21) with inner groove (23), and inner groove (23) is communicated with described meter out hole (24) selectivity under the sealing surface effect of control flat valve (8).
3. flat valve mechanism is sprayed in the control of electric-controlled fuel injector as claimed in claim 1, it is characterized in that: the lower end surface of control flat valve (8) has sealing surface, the upper-end surface of restricting orifice (9) is the plane, lower end surface at control flat valve (8) offers inner groove (23), outer groove (22) and guiding gutter (21), outer groove (22) is enclosed within the outside of inner groove (23), outer groove (22) is communicated with by guiding gutter (21) with inner groove (23), inner groove (23) is communicated with described meter out hole (24) selectivity under the sealing surface effect of control flat valve (8), and fit in control flat valve (8) lower end surface within the inner circle of inner groove (23) and the upper-end surface of restricting orifice (9), fitting in the lower end surface of the control flat valve (8) between the inner circle of the cylindrical of inner groove (23) and outer groove (22) and the upper-end surface of restricting orifice (9), fits and form seal band in the upper-end surface of the restricting orifice (9) in the lower end surface of the control flat valve (8) within the inner circle of inner groove (23) and meter out hole (24) the oil return outlet end outside.
4. flat valve mechanism is sprayed in the control of electric-controlled fuel injector as claimed in claim 3, it is characterized in that: the outside diameter≤0.8mm of described seal band, and the interior circular diameter 〉=0.3mm of seal band.
5. flat valve mechanism is sprayed in the control of electric-controlled fuel injector as claimed in claim 1, and it is characterized in that: the degree of depth of described inner groove (23) is less than the degree of depth of outer groove (22).
6. flat valve mechanism is sprayed in the control of electric-controlled fuel injector as claimed in claim 1, and it is characterized in that: the diversed groove in plane (21) between the inner circle of the cylindrical of described inner groove (23) and outer groove (22) is divided into 3 ~ 8 five equilibriums.
7. flat valve mechanism is sprayed in the control of electric-controlled fuel injector as claimed in claim 1, and it is characterized in that: the size of seal contact face of described control flat valve (8) is greater than the oil return outlet end diameter of meter out hole (24).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100086281A CN103047061A (en) | 2013-01-10 | 2013-01-10 | Controlled injection flat valve mechanism of electrical oil injector |
| PCT/CN2013/085523 WO2014107978A1 (en) | 2013-01-10 | 2013-10-18 | Injection control flat valve mechanism of electronically controlled fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100086281A CN103047061A (en) | 2013-01-10 | 2013-01-10 | Controlled injection flat valve mechanism of electrical oil injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103047061A true CN103047061A (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100086281A Pending CN103047061A (en) | 2013-01-10 | 2013-01-10 | Controlled injection flat valve mechanism of electrical oil injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103047061A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014107826A1 (en) * | 2013-01-10 | 2014-07-17 | 无锡开普机械有限公司 | Injection control valve of an electronically controlled fuel injector |
| WO2014107978A1 (en) * | 2013-01-10 | 2014-07-17 | 无锡开普机械有限公司 | Injection control flat valve mechanism of electronically controlled fuel injector |
| CN110529317A (en) * | 2019-08-23 | 2019-12-03 | 一汽解放汽车有限公司 | A kind of fuel injection valve valve pocket assembly |
| CN110529316A (en) * | 2019-08-22 | 2019-12-03 | 一汽解放汽车有限公司 | A kind of fuel injection valve and engine |
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| JP2006322430A (en) * | 2005-05-20 | 2006-11-30 | Denso Corp | Fuel injection device |
| JP2010174849A (en) * | 2009-02-02 | 2010-08-12 | Denso Corp | Solenoid valve and fuel injection valve |
| CN201730718U (en) * | 2010-08-05 | 2011-02-02 | 无锡开普动力有限公司 | Injection valve of electric control fuel injector |
| CN202082026U (en) * | 2011-06-14 | 2011-12-21 | 常州博瑞油泵油嘴有限公司 | High-pressure common rail oil ejector for planar opening and closing type diesels |
| CN102374084A (en) * | 2011-09-20 | 2012-03-14 | 福建省莆田市中涵机动力有限公司 | Static non-leakage high pressure common-rail injector |
| CN102852684A (en) * | 2012-10-12 | 2013-01-02 | 福建省莆田市中涵机动力有限公司 | Pressure balancing type external sealing plane control valve of common-rail oil sprayer |
| CN203175733U (en) * | 2013-01-10 | 2013-09-04 | 无锡开普机械有限公司 | Control jet flat valve structure of electronic control fuel injector |
-
2013
- 2013-01-10 CN CN2013100086281A patent/CN103047061A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006322430A (en) * | 2005-05-20 | 2006-11-30 | Denso Corp | Fuel injection device |
| JP2010174849A (en) * | 2009-02-02 | 2010-08-12 | Denso Corp | Solenoid valve and fuel injection valve |
| CN201730718U (en) * | 2010-08-05 | 2011-02-02 | 无锡开普动力有限公司 | Injection valve of electric control fuel injector |
| CN202082026U (en) * | 2011-06-14 | 2011-12-21 | 常州博瑞油泵油嘴有限公司 | High-pressure common rail oil ejector for planar opening and closing type diesels |
| CN102374084A (en) * | 2011-09-20 | 2012-03-14 | 福建省莆田市中涵机动力有限公司 | Static non-leakage high pressure common-rail injector |
| CN102852684A (en) * | 2012-10-12 | 2013-01-02 | 福建省莆田市中涵机动力有限公司 | Pressure balancing type external sealing plane control valve of common-rail oil sprayer |
| CN203175733U (en) * | 2013-01-10 | 2013-09-04 | 无锡开普机械有限公司 | Control jet flat valve structure of electronic control fuel injector |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014107826A1 (en) * | 2013-01-10 | 2014-07-17 | 无锡开普机械有限公司 | Injection control valve of an electronically controlled fuel injector |
| WO2014107978A1 (en) * | 2013-01-10 | 2014-07-17 | 无锡开普机械有限公司 | Injection control flat valve mechanism of electronically controlled fuel injector |
| CN110529316A (en) * | 2019-08-22 | 2019-12-03 | 一汽解放汽车有限公司 | A kind of fuel injection valve and engine |
| CN110529316B (en) * | 2019-08-22 | 2020-11-03 | 一汽解放汽车有限公司 | Fuel injection valve and engine |
| CN110529317A (en) * | 2019-08-23 | 2019-12-03 | 一汽解放汽车有限公司 | A kind of fuel injection valve valve pocket assembly |
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Application publication date: 20130417 |