CN103047062A - Electronic control oil sprayer for injection valve - Google Patents
Electronic control oil sprayer for injection valve Download PDFInfo
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- CN103047062A CN103047062A CN2013100090840A CN201310009084A CN103047062A CN 103047062 A CN103047062 A CN 103047062A CN 2013100090840 A CN2013100090840 A CN 2013100090840A CN 201310009084 A CN201310009084 A CN 201310009084A CN 103047062 A CN103047062 A CN 103047062A
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Abstract
The invention relates to an electronic control oil sprayer for a diesel engine injection valve. An oil sprayer body oil hole is arranged in an oil sprayer body and communicated with an oil inlet port positioned on the oil sprayer body, a bushing ring and a guiding valve seat are arranged in the oil sprayer body, the guiding valve seat is located below the bushing ring and provided with a guiding valve seat oil hole, and a throttling orifice plate is arranged below the guiding valve seat and provided with a control chamber, an oil inlet throttling orifice, a throttling orifice plate oil inlet hole, a connecting oil hole, an oil returning throttling orifice and a throttling orifice plate oil discharging hole. A control piston sleeve is arranged below the throttling orifice plate and provided with a control piston sleeve oil hole, the lower end face of a control flat valve is a plane, and the upper end face of the throttling orifice plate is provided with a pressure relief ring groove, an outer ring groove and a flow guiding groove. The outer ring groove is sleeved outside the pressure relief ring groove, and the pressure relief ring groove is selectively communicated with the oil returning throttling orifice. The electronic control oil sprayer reduces processing difficulty and improves tightness and production rate.
Description
Technical field
The present invention relates to a kind of electric-controlled fuel injector of diesel engine, especially a kind of electric-controlled fuel injector of injection valve.
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 discharging, improve the significant advantages such as Economy, reliability height, therefore be widely applied abroad.At home, because the requirement of Abgasgesetz constantly promotes, high pressure co-rail system has become inevitable choice.
In high pressure co-rail system, electric-controlled fuel injector is most critical and complicated parts, and it is the signal that sends according to ECU, controls needle-valve body by the opening and closing of solenoid valve, the high pressure fuel in the common rail pipe is sprayed into the firing chamber of motor.The structure acquaintance of present various electric-controlled fuel injectors, just profile differs larger, all is comprised of solenoid valve, control throttle orifice, control piston and oil nozzle.
In electric-controlled fuel injector, the sealing between guide valve seat and the restricting orifice is very important, the especially sealing of the throttle orifice in spool and the restricting orifice, if adopt the sealing of ball sealer and conical surface type, the difficulty of processing of throttling taper hole is very large, is difficult to processing.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of electric-controlled fuel injector that can reduce difficulty of processing, improve the injection valve of sealing and productivity is provided.
According to technological scheme provided by the invention, the electric-controlled fuel injector of described injection valve, in oil injector body, offer the oil injector body oilhole, the oil injector body oilhole is communicated with oil-feed interface on the oil injector body, in oil injector body, be provided with grommet and guide valve seat, guide valve seat is positioned at the below of grommet, offer guide valve seat oilhole and armature lever pilot hole at guide valve seat, below guide valve seat, be provided with restricting orifice, the control room that offers at restricting orifice, the meter in hole, the restricting orifice oil inlet hole, connect oilhole, oilhole under meter out hole and the restricting orifice, the aperture in meter in hole is less than the aperture of restricting orifice oil inlet hole, the aperture in meter in hole is less than the aperture that connects oilhole, the restricting orifice oil inlet hole is communicated with the meter in hole, the meter in 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, oilhole is communicated with the meter out hole under the restricting orifice, the aperture in meter out hole is less than the aperture of oilhole under the restricting orifice, below restricting orifice, be provided with the control piston cover, put at control piston and to offer control piston cover oilhole, control piston cover oilhole is communicated with the restricting orifice oil inlet hole, the oil injector body oilhole is communicated with control piston cover oilhole, sliding plug has control piston in the control piston cover, the underpart of oilhole under the upper-end surface selective shut-off restricting orifice of control piston, upper end at oil injector body is fixed with electromagnet by the very tight cap of electromagnetism, has the solenoid valve spring in the electromagnet, underpart at the solenoid valve spring is connected with armature, offer the armature runner at armature, be welded with armature lever at armature, the armature lever sliding plug is in the armature lever pilot hole of guide valve seat, in armature lever, axially offer the armature lever oil duct along it, be fixed with the adjustment ball in the underpart of armature lever, be provided with the control flat valve in the guide valve seat below armature lever, the upper-end surface of control flat valve is provided with the sphere depression, lower end at oil injector body is fixed with nozzle cap nut, needle-valve body is installed in nozzle cap nut, in needle-valve body, offer the needle-valve body oilhole, needle-valve is installed in needle-valve body, in the nozzle cap nut above needle-valve body intermediate is installed, in intermediate, offer the intermediate oilhole, described oil injector body oilhole is communicated with the intermediate oilhole, the intermediate oilhole is communicated with the needle-valve body oilhole, is fixed with locating stud at intermediate; In the lower end of oil injector body, be provided with push rod, the underpart of push rod and the upper end portion of needle-valve body offset, the upper end portion of push rod and the underpart of control piston offset, outer cover is connected to the push rod guide pad in the upper end of push rod, push rod below the push rod guide pad is provided with pressure adjusting spring, and the underpart of pressure adjusting spring and push rod lower end bulge loop offset; The lower end surface of described control flat valve is the plane, offer pressure release annular groove, outer groove and guiding gutter in the upper-end surface of restricting orifice, outer groove is enclosed within the outside of pressure release annular groove, outer groove is communicated with by guiding gutter with the pressure release annular groove, the pressure release annular groove is communicated with described meter out hole selectivity, and outer groove and guide valve seat oilhole join; The oil return outlet end in the selective shut-off meter out hole, lower end surface of described control flat valve.
Be provided with spring and adjust pad in electromagnet, the upper end portion of described solenoid valve spring and spring are adjusted pad and are offseted.
Push rod below the push rod guide pad is socketed with the pressure regulation pad, and the upper end portion of described pressure adjusting spring and pressure regulation pad offset.
The upper-end surface that the upper-end surface of described armature lever is lower than armature is 0.04 ~ 0.06mm.
The matching gap of the armature lever pilot hole of described armature lever and guide valve seat is 0.005 ~ 0.007mm.
The present invention has reduced difficulty of processing, has improved sealing and productivity.
Description of drawings
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is partial enlarged drawing of the present invention.
Fig. 3 is the structural representation of guide valve seat among the present invention.
Fig. 4 is the structural representation of control piston cover among the present invention.
Embodiment
The invention will be further described below in conjunction with specific embodiment.
As shown in the figure, the electric-controlled fuel injector of this injection valve, in oil injector body 11, offer oil injector body oilhole 11.1, oil injector body oilhole 11.1 is communicated with oil-feed interface on the oil injector body 11, in oil injector body 11, be provided with grommet 5 and guide valve seat 6, guide valve seat 6 is positioned at the below of grommet 5, offer guide valve seat oilhole 6.1 and armature lever pilot hole at guide valve seat 6, below guide valve seat 6, be provided with restricting orifice 9, offer control room 28 at restricting orifice 9, meter in 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 meter in hole 27 is less than the aperture of restricting orifice oil inlet hole 29, the aperture in meter in hole 27 is less than the aperture that connects oilhole 30, restricting orifice oil inlet hole 29 is communicated with meter in hole 27, meter in 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, oilhole 25 is communicated with meter out hole 24 under the restricting orifice, the aperture in meter out hole 24 is less than the aperture of oilhole under the restricting orifice 25, 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 injector body 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 injector body 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 21 at armature 7, armature lever 21 sliding plugs are in the armature lever pilot hole of guide valve seat 6, in armature lever 21, axially offer armature lever oil duct 21.1 along it, be fixed with adjustment ball 20 in the underpart of armature lever, be provided with control flat valve 8 in the guide valve seat 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 injector body 11, needle-valve body 17 is installed in nozzle cap nut 18, in needle-valve body 17, offer needle-valve body oilhole 17.1, in needle-valve body 17, needle-valve is installed, in the nozzle cap nut 18 above needle-valve body 17 intermediate 15 is installed, in intermediate 15, offer intermediate oilhole 15.1, described oil injector body oilhole 11.1 is communicated with intermediate oilhole 15.1, intermediate oilhole 15.1 is communicated with needle-valve body oilhole 17.1, is fixed with locating stud 16 at intermediate 15; In the lower end of oil injector body 11, be provided with push rod 14, the upper end portion of the underpart of push rod 14 and needle-valve body 17 offsets, 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; The lower end surface of described control flat valve 8 is the plane, offer pressure release annular 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 pressure release annular groove 23, outer groove 22 is communicated with by guiding gutter 21 with pressure release annular groove 23, pressure release annular groove 23 is communicated with described meter out hole 24 selectivity, and outer groove 22 joins with guide valve seat oilhole 6.1; The oil return outlet end in the selective shut-off meter out hole, lower end surface 24 of described control flat valve 8.Restricting orifice 9 upper end surface area between the oil return outlet end cylindrical in the inner circle of pressure release annular groove 23 and meter out hole 24 are the annular sealing surface of restricting orifice 9.
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.
The upper-end surface that the upper-end surface of described armature lever 21 is lower than armature 7 is 0.04 ~ 0.06mm.
Described armature lever 21 is 0.005 ~ 0.007mm with the matching gap of the armature lever pilot hole of guide valve seat 6.
The hardness of the lower end surface (being sealing plane) of control flat valve 8 and the annular sealing surface of restricting orifice 9 is 58 ~ 64HRC, and planeness is less than 0.0009, and surface roughness is Ra0.1.
High pressure fuel is entered by the oil injector body oilhole 11.1 of oil injector body, then the meter in hole 27 by restricting orifice 9 enters control room 28 and enters in the needle-valve body 17 by intermediate oilhole 15.1, and the pressurized cross section of control piston 34 is greater than the pressurized cross section of needle-valve, the pressure of adding pressure adjusting spring 13 just makes needle-valve be pressed on the needle-valve body, makes needle-valve body 17 be in closed condition; When ECU sends signal, solenoid valve 1 energising is opened, armature 7 moves under suction with armature lever 21, and like this, control flat valve 8 also moves up under pressure, high pressure fuel just flows out by meter out hole 24, again by pressure release annular groove 23 to 6.1 oil returns of guiding valve seat oilhole, the pressure in control room 28 reduces like this, and needle-valve is subject to still that high pressure fuel upwards pressure and greater than the pressure of pressure adjusting spring 13, at this moment needle-valve is opened, and high pressure fuel is sprayed by spray orifice.When ECU sends signal again, solenoid valve 1 outage is closed, armature 7 moves down under the pressure-acting of solenoid valve spring 4 with armature lever 21, will control flat valve 8 and again be pressed on the restricting orifice 9, and meter out hole 24 is plugged, the pressure in control room 28 recovers, control piston 34 moves down under pressure, withstands push rod 14, and needle-valve is pressed on the needle-valve body 17, needle-valve body 17 is closed again, end of injection.
Claims (5)
1. the electric-controlled fuel injector of an injection valve, it is characterized in that: in oil injector body (11), offer oil injector body oilhole (11.1), oil injector body oilhole (11.1) is communicated with oil-feed interface on the oil injector body (11), in oil injector body (11), be provided with grommet (5) and guide valve seat (6), guide valve seat (6) is positioned at the below of grommet (5), offer guide valve seat oilhole (6.1) and armature lever pilot hole at guide valve seat (6), be provided with restricting orifice (9) in the below of guide valve seat (6), offer control room (28) at restricting orifice (9), meter in 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 meter in hole (27) is less than the aperture of restricting orifice oil inlet hole (29), the aperture in meter in hole (27) is less than the aperture that connects oilhole (30), restricting orifice oil inlet hole (29) is communicated with meter in hole (27), meter in 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, oilhole under the restricting orifice (25) is communicated with meter out hole (24), the aperture in meter out hole (24) is less than the aperture of oilhole under the restricting orifice (25), be provided with control piston cover (10) in the below of restricting orifice (9), 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 injector body oilhole (11.1) is communicated with control piston cover oilhole (26), sliding plug has control piston (34) in control piston cover (10), the underpart of oilhole (25) under the upper-end surface selective shut-off restricting orifice of control piston (34), upper end at oil injector body (11) is fixed with electromagnet (1) by the very tight cap of electromagnetism (3), 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 (21) at armature (7), armature lever (21) sliding plug is in the armature lever pilot hole of guide valve seat (6), in armature lever (21), axially offer armature lever oil duct (21.1) along it, be fixed with adjustment ball (20) in the underpart of armature lever, be provided with control flat valve (8) in the guide valve seat below armature lever (6), 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 injector body (11), needle-valve body (17) is installed in nozzle cap nut (18), in needle-valve body (17), offer needle-valve body oilhole (17.1), in needle-valve body (17), needle-valve is installed, in the nozzle cap nut (18) of needle-valve body (17) top, intermediate (15) is installed, in intermediate (15), offer intermediate oilhole (15.1), described oil injector body oilhole (11.1) is communicated with intermediate oilhole (15.1), intermediate oilhole (15.1) is communicated with needle-valve body oilhole (17.1), is fixed with locating stud (16) at intermediate (15); In the lower end of oil injector body (11), be provided with push rod (14), the upper end portion of the underpart of push rod (14) and needle-valve body (17) offsets, the underpart of the upper end portion of push rod (14) and control piston (34) offsets, upper end outer cover at push rod (14) is connected to push rod guide pad (19), push rod (14) in push rod guide pad (19) below is provided with pressure adjusting spring (13), and the underpart of pressure adjusting spring (13) and push rod (14) lower end bulge loop offset; The lower end surface of described control flat valve (8) is the plane, offer pressure release annular 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 pressure release annular groove (23), outer groove (22) is communicated with by guiding gutter (21) with pressure release annular groove (23), pressure release annular groove (23) is communicated with described meter out hole (24) selectivity, and outer groove (22) joins with guide valve seat oilhole (6.1); The oil return outlet end in the selective shut-off meter out hole, lower end surface (24) of described control flat valve (8).
2. the electric-controlled fuel injector of injection valve as claimed in claim 1 is characterized in that: be provided with spring and adjust pad (2) in electromagnet (1), the upper end portion of described solenoid valve spring (4) offsets with spring adjustment pad (2).
3. the electric-controlled fuel injector of injection valve as claimed in claim 1 is characterized in that: the push rod (14) in push rod guide pad (19) below is socketed with pressure regulation pad (12), and the upper end portion of described pressure adjusting spring (13) and pressure regulation pad (12) offset.
4. the electric-controlled fuel injector of injection valve as claimed in claim 1, it is characterized in that: the upper-end surface that the upper-end surface of described armature lever (21) is lower than armature (7) is 0.04 ~ 0.06mm.
5. the electric-controlled fuel injector of injection valve as claimed in claim 1 is characterized in that: described armature lever (21) is 0.005 ~ 0.007mm with the matching gap of the armature lever pilot hole of guide valve seat (6).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100090840A CN103047062A (en) | 2013-01-10 | 2013-01-10 | Electronic control oil sprayer for injection valve |
| PCT/CN2013/085524 WO2014107979A1 (en) | 2013-01-10 | 2013-10-18 | Electronically controlled fuel injector of injection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100090840A CN103047062A (en) | 2013-01-10 | 2013-01-10 | Electronic control oil sprayer for injection valve |
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| Publication Number | Publication Date |
|---|---|
| CN103047062A true CN103047062A (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100090840A Pending CN103047062A (en) | 2013-01-10 | 2013-01-10 | Electronic control oil sprayer for injection valve |
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| CN (1) | CN103047062A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807067A (en) * | 2013-12-30 | 2014-05-21 | 沪东重机有限公司 | External electromagnetic valve type electronic control fuel 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 |
| WO2014107979A1 (en) * | 2013-01-10 | 2014-07-17 | 无锡开普机械有限公司 | Electronically controlled fuel injector of injection valve |
| 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 |
| CN105781840A (en) * | 2016-05-24 | 2016-07-20 | 辽阳新风科技有限公司 | Static leakage-free and low-inertia fuel injector assembly of pore plate structure and fuel injector |
| CN105822477A (en) * | 2016-05-24 | 2016-08-03 | 辽阳新风科技有限公司 | Static-leakage-free variable-pressure cavity type low-inertia fuel injector subassembly and fuel injector |
| CN105840376A (en) * | 2016-05-23 | 2016-08-10 | 辽阳新风科技有限公司 | No-static-leakage low-inertia oil sprayer module and oil sprayer |
| CN108223222A (en) * | 2018-03-28 | 2018-06-29 | 南岳电控（衡阳）工业技术股份有限公司 | A kind of fuel oil injector for reducing metering servovalve deformation |
| CN109099192A (en) * | 2018-09-21 | 2018-12-28 | 英嘉动力科技无锡有限公司 | A kind of novel two-position three-way valve |
| CN111502880A (en) * | 2020-03-17 | 2020-08-07 | 成都威特电喷有限责任公司 | Electric control high-pressure fuel injection device capable of preventing dynamic leakage |
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| CN203098110U (en) * | 2013-01-10 | 2013-07-31 | 无锡开普机械有限公司 | Electronic-control fuel injector of injection valve |
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| CN101338716A (en) * | 2008-09-02 | 2009-01-07 | 北京华威奇燃油喷射科技有限公司 | High pressure co-rail electric control fuel injector |
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Cited By (11)
| 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 |
| WO2014107979A1 (en) * | 2013-01-10 | 2014-07-17 | 无锡开普机械有限公司 | Electronically controlled fuel injector of injection valve |
| 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 |
| CN103807067A (en) * | 2013-12-30 | 2014-05-21 | 沪东重机有限公司 | External electromagnetic valve type electronic control fuel injector |
| CN105840376A (en) * | 2016-05-23 | 2016-08-10 | 辽阳新风科技有限公司 | No-static-leakage low-inertia oil sprayer module and oil sprayer |
| CN105781840A (en) * | 2016-05-24 | 2016-07-20 | 辽阳新风科技有限公司 | Static leakage-free and low-inertia fuel injector assembly of pore plate structure and fuel injector |
| CN105822477A (en) * | 2016-05-24 | 2016-08-03 | 辽阳新风科技有限公司 | Static-leakage-free variable-pressure cavity type low-inertia fuel injector subassembly and fuel injector |
| CN105781840B (en) * | 2016-05-24 | 2019-06-25 | 辽阳新风科技有限公司 | A kind of AND DEWATERING FOR ORIFICE STRUCTURE is without static leakage low inertia component of oil sprayer and fuel injector |
| CN108223222A (en) * | 2018-03-28 | 2018-06-29 | 南岳电控（衡阳）工业技术股份有限公司 | A kind of fuel oil injector for reducing metering servovalve deformation |
| CN109099192A (en) * | 2018-09-21 | 2018-12-28 | 英嘉动力科技无锡有限公司 | A kind of novel two-position three-way valve |
| CN111502880A (en) * | 2020-03-17 | 2020-08-07 | 成都威特电喷有限责任公司 | Electric control high-pressure fuel injection device capable of preventing dynamic leakage |
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Application publication date: 20130417 |