CN203098111U - Control injection valve of electronic fuel injector - Google Patents
Control injection valve of electronic fuel injector Download PDFInfo
- Publication number
- CN203098111U CN203098111U CN 201320013587 CN201320013587U CN203098111U CN 203098111 U CN203098111 U CN 203098111U CN 201320013587 CN201320013587 CN 201320013587 CN 201320013587 U CN201320013587 U CN 201320013587U CN 203098111 U CN203098111 U CN 203098111U
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- restricting orifice
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Abstract
The utility model relates to a control injection valve of an electronic fuel injector. The lower end face of a control flat valve is provided with a sealing face. A control position sleeve is arranged on the lower portion of a throttle orifice plate, and an annular embossment is arranged on the upper end portion of the control piston sleeve. The throttle orifice plate is provided with a control chamber, an oil return throttle hole and a throttle orifice plate oil discharging hole. A throttle orifice plate oil groove is formed in the lower end face of the throttle orifice plate or in the upper end face of the control piston sleeve. A control piston sleeve oil hole and an oil inlet adjusting hole are formed in the control piston sleeve, the hole diameter of the oil inlet adjusting hole is smaller than the hole diameter of the control piston sleeve oil hole, and the oil inlet adjusting hole is communicated with the throttle orifice plate oil groove. A control piston is connected in the control piston sleeve in a sliding and inserted mode. The upper end face of the control piston alternatively plugs the lower end portion of the throttle orifice plate oil discharging hole. An inner annular groove, an outer annular groove and a diversion groove are formed in the lower end face of the control flat valve or the upper end face of the throttle orifice plate, the outer annular groove is sleeved outside the inner annular groove, the outer annular groove is communicated with the inner annular groove through the diversion groove, and the inner annular groove is selectively communicated the oil return throttle hole. The control injection valve of the electronic fuel injector reduces machining difficulties and improves sealing performance and the production rate.
Description
Technical field
The utility model relates to a kind of electric-controlled fuel injector parts, especially a kind of control injection valve of electric-controlled fuel injector.
Background technique
Because the Electrocontrolled high-pressure common rail fuel injection system is compared with traditional mechanical formula oil-fired system, have the engine noise of reduction, reduce significant advantages such as discharging, improve Economy, therefore obtained extensive use 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 fully to electric-controlled fuel injector, 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 purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of injection valve that can reduce difficulty of processing, improve the mould electric-controlled fuel injector of sealing and productivity is provided.
According to the technological scheme that the utility model provides, the control injection valve of described electric-controlled fuel injector, it comprises control flat valve, restricting orifice, control piston cover and control piston; The lower end surface of described control flat valve has sealing surface; Below restricting orifice, be provided with the control piston cover, the upper end portion of control piston cover has annular projection, on restricting orifice, offer the control room, oilhole under meter out hole and the restricting orifice, offer the restricting orifice oil groove in the lower end surface of restricting orifice or in the upper-end surface of control piston cover, the restricting orifice oil groove is communicated with the control room, the control room is communicated with oilhole under the restricting orifice, oilhole is communicated with the meter out hole under the restricting orifice, put at control piston and to offer control piston cover oilhole and meter in hole, the meter in hole is positioned at the top of control piston cover oilhole, the meter in hole is communicated with control piston cover oilhole, the aperture in meter in hole is less than the aperture of control piston cover oilhole, the meter in hole is communicated with the restricting orifice oil groove, sliding plug has control piston, the underpart of oilhole under the upper-end surface selective shut-off restricting orifice of control piston in the control piston cover; 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, and outer groove is communicated with by guiding gutter with inner groove, and inner groove is communicated with described meter out hole selectivity.
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 interior 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 interior circle of the cylindrical of inner groove and 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 interior circle of inner groove and the meter out hole 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 is less than the degree of depth of outer groove.
The diversed groove in plane between the interior circle of the cylindrical of described inner groove and 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 angle of the axis of described control piston cover oilhole and the annular projection lower end surface of control piston cover is 30 ~ 120 °; The angle of the annular projection lower end surface of the axis in described meter in hole and control piston cover is 30 ~ 120 °.
The utility model has reduced difficulty of processing, has improved sealing and productivity.
Description of drawings
Fig. 1 is the structural representation of installing and using of the present utility model.
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 utility model embodiment 2 a partial structurtes schematic representation.
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 A-A sectional view of Fig. 7.
Embodiment
The utility model is described in further detail below in conjunction with specific embodiment.
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the injection valve of this electric-controlled fuel injector, it comprises control flat valve 8, restricting orifice 9, control piston cover 10 and control piston 34; The lower end surface of described control flat valve 8 has sealing surface; Below restricting orifice 9, be provided with control piston cover 10, the upper end portion of control piston cover 10 has annular projection, on restricting orifice 9, offer control room 28, oilhole 25 under meter out hole 24 and the restricting orifice, offer restricting orifice oil groove 36 in the lower end surface of restricting orifice 9 or in the upper-end surface of control piston cover 10, restricting orifice oil groove 36 is communicated with control room 28, control room 28 is communicated with oilhole 25 under the restricting orifice, oilhole 25 is communicated with meter out hole 24 under the restricting orifice, on control piston cover 10, offer control piston cover oilhole 26 and meter in hole 27, meter in hole 27 is positioned at the top of control piston cover oilhole 26, meter in hole 27 is communicated with control piston cover oilhole 26, the aperture in meter in hole 27 is less than the aperture of control piston cover oilhole 26, meter in hole 27 is communicated with restricting orifice oil groove 36, sliding plug has control piston 34, the underpart of oilhole 25 under the upper-end surface selective shut-off restricting orifice of control piston 34 in control piston cover 10; 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 interior 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 angle of the axis of described control piston cover oilhole 26 and the annular projection lower end surface of control piston cover 10 is 30 ~ 120 °; The angle of the annular projection lower end surface of the axis in described meter in hole 27 and control piston cover 10 is 30 ~ 120 °.
The injection valve of electric-controlled fuel injector, it comprises control flat valve 8, restricting orifice 9, control piston cover 10 and control piston 34; The lower end surface of described control flat valve 8 has sealing surface; Below restricting orifice 9, be provided with control piston cover 10, the upper end portion of control piston cover 10 has annular projection, on restricting orifice 9, offer control room 28, oilhole 25 under meter out hole 24 and the restricting orifice, offer restricting orifice oil groove 36 in the lower end surface of restricting orifice 9 or in the upper-end surface of control piston cover 10, restricting orifice oil groove 36 is communicated with control room 28, control room 28 is communicated with oilhole 25 under the restricting orifice, oilhole 25 is communicated with meter out hole 24 under the restricting orifice, on control piston cover 10, offer control piston cover oilhole 26 and meter in hole 27, meter in hole 27 is positioned at the top of control piston cover oilhole 26, meter in hole 27 is communicated with control piston cover oilhole 26, the aperture in meter in hole 27 is less than the aperture of control piston cover oilhole 26, meter in hole 27 is communicated with restricting orifice oil groove 36, sliding plug has control piston 34, the underpart of oilhole 25 under the upper-end surface selective shut-off restricting orifice of control piston 34 in control piston cover 10; 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 surfaces within the interior 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 interior 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 interior 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 interior 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 angle of the axis of described control piston cover oilhole 26 and the annular projection lower end surface of control piston cover 10 is 30 ~ 120 °; The angle of the annular projection lower end surface of the axis in described meter in hole 27 and control piston cover 10 is 30 ~ 120 °.
The injection valve of electric-controlled fuel injector of the present utility model is installed in the oil injector body in use, this oil injector body has: 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 coupling 6, control valve coupling 6 is positioned at the below of grommet 5, on control valve coupling 6, offer control valve coupling oilhole 6.1, below control valve coupling 6, be provided with restricting orifice 9, oil sprayer shell oilhole 11.1 is communicated with described control piston cover oilhole 26, 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, on armature 7, offer armature runner 7.1, on armature 7, be welded with armature lever, be fixed with adjustment ball 20 in the underpart of armature lever, be provided with control flat valve 8 in the control valve coupling 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, oil nozzle is installed, 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 on 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, be provided with pressure adjusting spring 13 on the push rod below the push rod guide pad 19 14, 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.
Be socketed with pressure regulation pad 12 on the push rod below the push rod guide pad 19 14, the upper end portion of described pressure adjusting spring 13 and pressure regulation pad 12 offset.
During work, high pressure fuel flows into meter in hole 27 by the control piston cover oilhole 26 on the control piston cover 10, enter the restricting orifice oil groove 36 of restricting orifice 9 again from meter in hole 27, enter control room 28 through restricting orifice oil groove 36 again, 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 act on control piston 34 axial direction to-and-fro motion, when control flat valve 8 lifts, fuel oil in the control room 28 flows in the inner groove 23 by oilhole 25 under meter out hole on the restricting orifice 9 24 and the restricting orifice, flow to bigger outer groove 22 through guiding gutter 21 again, evenly flow out around the fuel oil then; When the fuel oil in the control room 28 flows out by oilhole 25 under the meter out hole on the restricting orifice 9 24 and the restricting orifice, the fuel pressure in control room 28 descends, and the restricting orifice oil groove 36 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, oil pressure can't be set up in the control room 28, 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 blocked, the restricting orifice oil groove 36 of 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, the The whole control valve was finished a motion.In its working procedure, repeat such circulation.
Claims (8)
1. the control injection valve of an electric-controlled fuel injector is characterized in that: it comprises control flat valve (8) and restricting orifice (9) and control piston cover (10), and the lower end surface of described control flat valve (8) has sealing surface; Offer control room (28) on the restricting orifice (9), connecting oilhole (25) under oilhole (36), meter out hole (24) and the restricting orifice; Offer meter in hole (27) on the control piston cover 10 and connect oil inlet hole (26); The aperture in oil-inlet economizing hole (27) is less than the aperture of meter out hole (24), the aperture in oil-inlet economizing hole (27) is less than the aperture that connects oilhole (36), the aperture in meter out hole (24) is less than the aperture of oilhole under the restricting orifice (25), connecting oil inlet hole (26) is communicated with oil-inlet economizing hole (27), oil-inlet economizing hole (27) be connected oilhole (36) and be communicated with, connecting oilhole (36) 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. the control injection valve 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) in the upper-end surface of restricting orifice (9), 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 outer groove (22) joins with control valve coupling oilhole (6.1).
3. the control injection valve 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), outer groove (22) joins with control valve coupling oilhole (6.1), and fit in control flat valve (8) lower end surface within the interior 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 interior 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 interior circle of inner groove (23) and meter out hole (24) the oil return outlet end outside.
4. the control injection valve of electric-controlled fuel injector as claimed in claim 3 is characterized in that: the outside diameter≤0.8mm of described seal band, and the interior circular diameter 〉=0.3mm of seal band.
5. the control injection valve of electric-controlled fuel injector as claimed in claim 1, 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. the control injection valve of electric-controlled fuel injector as claimed in claim 1, it is characterized in that: the diversed groove in plane (21) between the interior circle of the cylindrical of described inner groove (23) and outer groove (22) is divided into 3 ~ 8 five equilibriums.
7. the control injection valve of electric-controlled fuel injector as claimed in claim 1, 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).
8. the control injection valve of electric-controlled fuel injector as claimed in claim 1 is characterized in that: the angle of the axis of described control piston cover oilhole (26) and the annular projection lower end surface of control piston cover (10) is 30 ~ 120 °; The angle of the annular projection lower end surface of the axis in described meter in hole (27) and control piston cover (10) is 30 ~ 120 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320013587 CN203098111U (en) | 2013-01-10 | 2013-01-10 | Control injection valve of electronic fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320013587 CN203098111U (en) | 2013-01-10 | 2013-01-10 | Control injection valve of electronic fuel injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203098111U true CN203098111U (en) | 2013-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320013587 Expired - Lifetime CN203098111U (en) | 2013-01-10 | 2013-01-10 | Control injection valve of electronic fuel injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203098111U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047060A (en) * | 2013-01-10 | 2013-04-17 | 无锡开普机械有限公司 | Controlled injection valve of electrical oil 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 |
-
2013
- 2013-01-10 CN CN 201320013587 patent/CN203098111U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047060A (en) * | 2013-01-10 | 2013-04-17 | 无锡开普机械有限公司 | Controlled injection valve of electrical oil injector |
| 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 |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20191011 Granted publication date: 20130731 |
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| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20201120 Granted publication date: 20130731 |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130731 |