CN101649797B - Zero-backpressure electronically-controlled diesel injector driven by magnetostrictive component - Google Patents
Zero-backpressure electronically-controlled diesel injector driven by magnetostrictive component Download PDFInfo
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- CN101649797B CN101649797B CN 200810073748 CN200810073748A CN101649797B CN 101649797 B CN101649797 B CN 101649797B CN 200810073748 CN200810073748 CN 200810073748 CN 200810073748 A CN200810073748 A CN 200810073748A CN 101649797 B CN101649797 B CN 101649797B
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Abstract
The invention discloses a zero-backpressure electronically-controlled diesel injector driven by a magnetostrictive component, which comprises a diesel injector shell provided with a diesel inlet passage and a diesel return passage, a nut cap, a magnetostrictive actuator, a zero-backpressure two-position three-way valve, a lock nut, an adjusting shim, a transition block, a pressure spring and injection nozzle matching parts. The transition block, the zero-backpressure two-position three-way valve, the adjusting shim, the lock nut, and the magnetostrictive actuator are orderly arranged in the diesel injector shell along the axial direction. The pressure spring and the injection nozzle matching parts are orderly arranged in the nut cap. The upper end surface and the lower end surface of the diesel injector shell, the two end surfaces of the transition block, the two end surfaces of the zero-backpressure two-position three-way valve, the two end surfaces of the adjusting shim and the lower end surface of the magnetostrictive actuator are high flatness plane; and the end surfaces of all components are connected tightly with one another to form a seal. Thus, a mechanism of which the magnetostrictive actuator controls the axial movement of a valve needle of an injection nozzle of the zero-backpressure two-position three-way valve under high-pressure diesel condition is formed. The diesel injector can realize more precise and high-frequency high pressure diesel injection.
Description
Technical field:
The present invention relates to the oil sprayer that a kind of electric-control diesel engine fuel injection system uses, particularly use a kind of electric-controlled diesel oil fuel oil injector that is driven by magnetostriction element of joint-track type electronic fuel injection technology.
Background technique:
At present, the fuel oil supply system of common rail electric-controlling diesel engine adopts electromagnetic injector that high-pressure diesel is sprayed into cylinder, because induction reactance is to a certain degree arranged during the work of the electromagnetic coil of electromagnetic fuel injector, be difficult to respond the requirement of higher injection frequency, limited diesel engine to lower oil consumption, the discharging more the cleaning, more low noise future development, and, the two position three-way valve that uses in the oil injecting nozzle of electric-controlled fuel injector, exist back pressure to produce larger active force, need larger control force to control.
Summary of the invention:
The object of the invention is to provide a kind of Zero-backpressure electronically-controlled diesel injector that is driven by magnetostriction element, this oil sprayer adopts magnetic telescopic driver and two-position three-way valve without back pressure, under less control force, can make diesel engine realize that in very of short duration injection time for several times pre-spray adds the oil spout of main jet, make noise, oil consumption, the discharging of diesel engine, all technical of output power be improved the problems referred to above that exist to solve existing electromagnetic injector.
The technological scheme that solves its above-mentioned technical problem employing is: the Zero-backpressure electronically-controlled diesel injector that a kind of magnetostriction element drives, comprise the nozzle holder with oil-feed passage and drainback passage, nut sleeve, magnetic telescopic driver, two-position three-way valve without back pressure, locking nut, adjust pad, transition block, pressure spring and injector nozzle matching parts, transition block sequentially is installed in nozzle holder vertically successively, two-position three-way valve without back pressure, adjust pad, locking nut, magnetic telescopic driver, order setting pressure spring successively in nut sleeve, injector nozzle matching parts, the upper and lower end face of nozzle holder, transition block and two-position three-way valve without back pressure and the both ends of the surface of adjusting pad, the magnetic telescopic driver lower end surface all is high planeness planes, each part end face close proximity, form sealing, consisted of the axially movable mechanism of oil nozzle needle that under the high-pressure diesel state, is controlled two-position three-way valve without back pressure by magnetic telescopic driver.
Because adopt technique scheme, the present invention has following beneficial effect:
One, the high-pressure diesel that can realize more accurate, higher frequency sprays, and makes multi-injection be more prone to realize, thereby noise, oil consumption, the discharging of diesel engine, all technical of output power are improved.
The present invention adopts magnetic telescopic driver, two-position three-way valve without back pressure, under the high-pressure diesel state, drive the control two-position three-way valve without back pressure by magnetic telescopic driver, reach the accurate purpose of spraying of weak electric signal control high-pressure diesel of using computer controlled system, because getting the process of magnetic elongation, degaussing recovery nature normality size, magnetostriction element can not be subjected to external interference, can respond the requirement of higher injection frequency, and two-position three-way valve without back pressure, can under little control force, move, can realize that high-pressure diesel more accurate, higher frequency sprays.
Two, scientific structure, simple, reliable, processing and fabricating is convenient, and cost is low.
The present invention adopts transition block sequentially is installed in nozzle holder vertically successively, two-position three-way valve without back pressure, adjust pad, locking nut, magnetic telescopic driver, order setting pressure spring successively in nut sleeve, injector nozzle matching parts, the upper and lower end face of nozzle holder, transition block and two-position three-way valve without back pressure and the both ends of the surface of adjusting pad, the magnetic telescopic driver lower end surface all is high planeness planes, each part end face close proximity, form sealing, consisted of the axially movable mechanism of oil nozzle needle that under the high-pressure diesel state, is controlled two-position three-way valve without back pressure by magnetic telescopic driver, it is simple in structure, drive the control two-position three-way valve without back pressure by magnetic telescopic driver, can realize that accurate high frequency high-pressure diesel sprays, and has reduced cost and the manufacture difficulty of diesel oil automatical control system critical component electric-controlled fuel injector.
Below, the technical characteristics of the Zero-backpressure electronically-controlled diesel injector that by reference to the accompanying drawings a kind of magnetostriction element of the present invention is driven is described further.
Description of drawings:
Fig. 1-1～Fig. 1-4: Zero-backpressure electronically-controlled diesel injector structure and working state schematic representation that a kind of magnetostriction element drives:
Fig. 1-1: the main sectional view, Fig. 1-2 looked: left view,
Fig. 1-3: normality---not oil spout state, Fig. 1-4: mangneto element elongation---oil spout state;
Fig. 2: magnetic telescopic driver structural representation;
Fig. 3～Fig. 3-3: the overall structure of two-position three-way valve without back pressure and critical piece structural representation:
Fig. 3: the overall structure schematic representation of two-position three-way valve without back pressure,
Fig. 3-1: control piston structure schematic representation,
Fig. 3-21: control valve ectosome structural representation, the A section enlarged view of Fig. 3-22: Fig. 3-21;
Fig. 3-3: control valve axle construction schematic representation;
Fig. 4-1～Fig. 4-2: shell construction schematic representation:
Fig. 4-1: the main sectional view, Fig. 4-2: left view looked;
Fig. 5: locking nut structure schematic representation;
Fig. 6: spacer chip architecture schematic representation;
Fig. 7-1～Fig. 7-2: transition block structural representation:
Fig. 7-1: the main sectional view, Fig. 7-2: worm's eye view looked.
Among Fig. 1-1～Fig. 1-4:
1-plastic casing wiring terminal, 2-magnetic telescopic driver, 3-locking nut, 4-adjust pad, 5-two-position three-way valve without back pressure, 6-nozzle holder, 7-transition block, 8-pressure spring, 9-injector nozzle matching parts, 10-needle, 11-nut sleeve, 12-high-pressure oil pipe joint;
Among Fig. 2:
21-magnetic telescopic driver end cap, 22-magnetic materials flexible rod, 23-magnetic telescopic driver coil, 24-magnetic telescopic driver coil holder, 25-magnetic telescopic driver push rod, 26-magnetic telescopic driver loaded spring, 27-magnetic telescopic driver housing;
Among Fig. 3～Fig. 3-3:
51-controls plunger, 511-large-diameter base, 512-straight hole-oil duct II, 513-small axle diameter section, 5131-control plunger conical surface, 514-small axle diameter section I, 5141-horizontal hole, 515-small axle diameter section II, 516-central blind hole;
52-control valve ectosome, the stepped shaft through hole of 521-control valve ectosome, the conical surface on the 522-control valve ectosome stepped shaft through hole;
53-controls valve shaft, 531-control valve shaft center hole-stepped shaft through hole, 532-control valve shaft large-diameter section, 533-control valve conical surface of shaft; 534-control valve shaft small axle diameter section; The 54-return spring;
Oil sprayer high pressure oil oil inlet passage---661,73, oil duct I, 65,91,63,72, oil duct II,
The oil sprayer drainback passage---63,72, back oil road III, oil duct II;
All the other labels are seen described in the literary composition.
Embodiment:
Embodiment one:
The Zero-backpressure electronically-controlled diesel injector that a kind of magnetostriction element drives, comprise the nozzle holder 6 with oil-feed passage and drainback passage, nut sleeve 11, magnetic telescopic driver 2, locking nut 3, adjust pad 4, two-position three-way valve without back pressure 5, transition block 7, pressure spring 8, injector nozzle matching parts 9 and needle 10, transition block 7 sequentially is installed in nozzle holder 6 vertically successively, two-position three-way valve without back pressure 5, adjust pad 4, locking nut 3, magnetic telescopic driver 2, order setting pressure spring 8 and injector nozzle matching parts 9 successively in nut sleeve 11, the upper and lower end face of nozzle holder 6, transition block 7 and two-position three-way valve without back pressure 5 and the both ends of the surface of adjusting pad 4, the lower end surface of magnetic telescopic driver 2 all is high planeness planes, each part end face close proximity, form sealing, consisted of under the high-pressure diesel state and controlled the axially movable mechanism of oil nozzle needle of two-position three-way valve without back pressure (referring to Fig. 1-1 by magnetic telescopic driver, Fig. 1-2);
Described magnetic telescopic driver 2 is by the loaded spring 26 that is installed in turn in the magnetic telescopic driver housing 27, push rod 25, coil 23 on the coil holder 24, magnetic materials flexible rod 22, end cap 21 forms (referring to Fig. 2), changed along the magnetic direction size under the magnetic fields that coil 23 provides by flexible rod 22, thereby driving push rod 25 moves, loaded spring 26 is that the characteristic according to magnetic materials provides precompression, make the dimensional changes of push rod 25 be linear, change magnetic intensity by the electric current that changes coil 23 and control flexible rod 22 dimensional changes, realize high precision displacement control.
Described two-position three-way valve without back pressure comprises control plunger 51, control valve ectosome 52, control valve shaft 53 and return spring 54 (referring to Fig. 3);
Described control plunger 51 is that an end is the not isometrical shaft-like part of large-diameter base 511, be small axle diameter section I 514 between small axle diameter section II 515 and time small axle diameter section 513, small axle diameter section I 514 has horizontal hole 5141, have the T font oil duct I that consisted of by central blind hole 516 and horizontal hole 5141 on the large-diameter base, the straight hole road 512 parallel with central blind hole 516 forms oil duct II, is conical surface 5131 transition (referring to Fig. 3-1) between inferior small axle diameter section 513 and the small axle diameter section I 514;
Described control valve ectosome 52 is the cylindrical bodys with stepped shaft through hole 521, and the reducing place of this stepped shaft through hole 521 is conical surface 522 (referring to Fig. 3-21, Fig. 3-22);
Described control valve shaft 53 is that a center hole is the not isometrical shaft-like part of 3 grades of stepped shaft through holes 531, be conical surface 533 between control valve shaft large-diameter section 532 and the control valve shaft small axle diameter 534, the conical surface 5311 (referring to Fig. 3-3) is arranged at the bottom of the stepped shaft through hole 531 large ends of control valve shaft;
Described nozzle holder 6 is to comprise bigger diameter end section 61, the cylindrical body of not isometrical 3 grades of ladders of stage casing 62 and miner diameter end section 64, outside thread is arranged at bigger diameter end section 61 tops, there are one 2 grades of step-shaped blind holes 611 at the center, the large end of this step-shaped blind hole 611 is used for laying two-position three-way valve without back pressure, there is respectively high pressure oil inlet hole 65 and the oilhole 63 that runs through housing stage casing and miner diameter end section the both sides of step-shaped blind hole 611 bottoms, there is a horizontal ledge 66 in 62 left sides, stage casing, there is single order trapezoidal hole 661 at its center, the large end of this stepped shaft through hole 661 is threaded with high-pressure oil pipe joint, the aperture section of stepped shaft through hole 661 is that the high pressure oil oil inlet passage is communicated with high pressure oil inlet hole 65, and outside thread is arranged at miner diameter end section 64 bottoms, the center also has one to be used for laying the blind hole 641 of pressure spring (referring to Fig. 4-1, Fig. 4-2).
Described transition block 7 has transition block oil inlet hole 73, transition block oilhole 72 for the thin column with center hole 71 on it.
Oil sprayer high pressure oil inlet passage comprises oil inlet hole 661, the transition block oil inlet hole 73 on the transition block and transition block oilhole 72, the oil duct I on the two-position three-way valve without back pressure 5 and oil duct II, the high pressure oil inlet hole 65 on the housing and the oil inlet hole 91 of oilhole 63 and injector nozzle matching parts of nozzle holder;
Drainback passage is comprised of the spill port 63 of the back oil road III on the two-position three-way valve without back pressure 5, oil duct II, nozzle holder.
Working procedure is as follows:
After connecting high-pressure diesel, high-pressure diesel enters electric-controlled fuel injector by the oil inlet hole 661 of nozzle holder from high-pressure oil pipe passage 661, transition block oil inlet hole 73 on the transition block and transition block oilhole 72, oil duct I on the two-position three-way valve without back pressure 5 and oil duct II, the oil inlet passage that high pressure oil inlet hole 65 on the housing and the oil inlet hole of oilhole 63 and injector nozzle matching parts 91 form, wherein one the tunnel arrive the pressure chamber of injector nozzle matching parts and the needle valve seat of oil nozzle, another road is through housing middle part oilhole 65, transition block oilhole 73 on the transition block enters two-position three-way valve without back pressure 5, because when magnetostriction element is in without the magnetic pumping state, the length that magnetostriction bar 22 keeps under the nature, under return spring 54 effects, control valve shaft 53 is in conical surface 522 conical surface drive fit closed states of the step of the stepped shaft through hole 521 of controlling valve shaft conical surface 533 and control valve ectosome 52, high pressure oil connects by the oil duct II 512 on the control plunger 51 and the T font oil duct I on it, the oil duct II 512 of high-pressure diesel from the two-position three-way valve without back pressure 51, transition block oilhole 73 on the transition block, oilhole 63 on the housing arrives the top of needle, not oil spout of oil sprayer, (referring to Fig. 1-3) is in the normal state;
When the magnetostriction element excited target, magnetostriction bar 22 axial elongations, control valve shaft 53 is displaced downwardly to the conical surface 5131 drive fits closure of 51 small axle diameter sections 513 of the conical surface 5311 and control plunger of control valve shaft stepped shaft through hole 531 large bottom sections, working solution connects by the oil duct II on the control plunger 51 and back oil road III, oil nozzle needle 10 is by high-pressure diesel jack-up, high-pressure diesel sprays between oil nozzle needle 10 and nozzle valve seat, the oil sprayer oil spout.(referring to Fig. 1-4).
When magnetostriction element 22 lost excitation, magnetostriction bar 22 axial shortenings returned to normal, and the pressure of injector nozzle matching parts rises rapidly, and oil spout stops.
Claims (1)
1. the Zero-backpressure electronically-controlled diesel injector that drives of a magnetostriction element, comprise the nozzle holder with oil-feed passage and drainback passage, nut sleeve, magnetic telescopic driver, two position three-way valve, locking nut, adjust pad, transition block, pressure spring, injector nozzle matching parts, it is characterized in that: described two position three-way valve is two-position three-way valve without back pressure, transition block sequentially is installed in nozzle holder vertically successively, two-position three-way valve without back pressure, adjust pad, locking nut, magnetic telescopic driver, order setting pressure spring successively in nut sleeve, injector nozzle matching parts, the upper and lower end face of nozzle holder, transition block and two-position three-way valve without back pressure and the both ends of the surface of adjusting pad, the magnetic telescopic driver lower end surface all is high planeness planes, each part end face close proximity, form sealing, consisted of the axially movable mechanism of oil nozzle needle that under the high-pressure diesel state, is controlled two-position three-way valve without back pressure by magnetic telescopic driver;
Described two-position three-way valve without back pressure, comprise the control plunger that has the turnover oil duct on it, control valve ectosome and control valve shaft that drainback passage is arranged on it, described control plunger (51) is not isometrical shaft-like part, described control valve ectosome (52) is the cylindrical body with stepped shaft through hole (521), described control valve shaft (53) is that a center hole is the not isometrical shaft-like part of 3 grades of stepped shaft through holes (531), be conical surface (533) between control valve shaft large-diameter section (532) and the control valve shaft small axle diameter (534), the conical surface (5311) is arranged at the bottom of the large end of stepped shaft through hole (531) of control valve shaft, control plunger (51), control valve shaft (53) and control valve ectosome (52) are installed from bottom to up successively, control plunger (51) is put into large end and its composition couple and conical surface (5311) cone match bottom it of control valve shaft stepped shaft through hole (531), return spring (54) places the stage casing of control valve shaft stepped shaft through hole (531) to withstand control plunger (51), conical surface (522) cone match of the step of the stepped shaft through hole (521) of control valve shaft conical surface (533) and control valve ectosome (52), the fitting surface of control plunger and control valve ectosome is high planeness plane, each part end face close proximity, form sealing, control plunger upper end cylinder forms couple with control valve shaft inner circle hole, the control plunger, the control valve ectosome, control valve shaft coaxality is installed, the control plunger can be mobile flexibly in control valve shaft stepped shaft through hole (531), the axial pressure of control valve shaft is in a basic balance, the small axle diameter (534) of control valve shaft passes the small end of control valve ectosome stepped shaft through hole (521), and with the circular drainback passage III of its formation;
Described magnetic telescopic driver by be installed in turn loaded spring in the magnetic telescopic driver housing, push rod, coil, magnetic materials flexible rod and end cap on coil holder forms, changed along the magnetic direction size under the magnetic fields that coil provides by flexible rod, move thereby drive push rod, change magnetic intensity by the electric current that changes coil and control the variation of flexible rod size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810073748 CN101649797B (en) | 2008-08-16 | 2008-08-16 | Zero-backpressure electronically-controlled diesel injector driven by magnetostrictive component |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810073748 CN101649797B (en) | 2008-08-16 | 2008-08-16 | Zero-backpressure electronically-controlled diesel injector driven by magnetostrictive component |
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| Publication Number | Publication Date |
|---|---|
| CN101649797A CN101649797A (en) | 2010-02-17 |
| CN101649797B true CN101649797B (en) | 2013-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200810073748 Expired - Fee Related CN101649797B (en) | 2008-08-16 | 2008-08-16 | Zero-backpressure electronically-controlled diesel injector driven by magnetostrictive component |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103603756B (en) * | 2013-12-10 | 2015-12-16 | 广西壮族自治区汽车拖拉机研究所 | A kind of Zero-backpressure electronically-controlled diesel injector of Electromagnetic Drive |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1928348A (en) * | 2006-08-14 | 2007-03-14 | 北京美动力发动机技术有限公司 | High pressure oil pump oil and oil spray on-time electromagnetic control valve for diesel engine |
| EP1519036B1 (en) * | 2003-09-26 | 2007-05-30 | Robert Bosch Gmbh | Fuel injection valve |
| CN201246249Y (en) * | 2008-08-16 | 2009-05-27 | 柳州福尔曼汽车电子有限公司 | Non-back pressure electric control diesel injector driven by magnetoconstriction element |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10326259A1 (en) * | 2003-06-11 | 2005-01-05 | Robert Bosch Gmbh | Injector for fuel injection systems of internal combustion engines, in particular direct injection diesel engines |
| DE10336327B4 (en) * | 2003-08-07 | 2016-03-17 | Robert Bosch Gmbh | Injector for fuel injection systems of internal combustion engines, in particular direct injection diesel engines |
-
2008
- 2008-08-16 CN CN 200810073748 patent/CN101649797B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1519036B1 (en) * | 2003-09-26 | 2007-05-30 | Robert Bosch Gmbh | Fuel injection valve |
| CN1928348A (en) * | 2006-08-14 | 2007-03-14 | 北京美动力发动机技术有限公司 | High pressure oil pump oil and oil spray on-time electromagnetic control valve for diesel engine |
| CN201246249Y (en) * | 2008-08-16 | 2009-05-27 | 柳州福尔曼汽车电子有限公司 | Non-back pressure electric control diesel injector driven by magnetoconstriction element |
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| CN101649797A (en) | 2010-02-17 |
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