CN105863912A - Fuel injection valve for an internal combustion engine - Google Patents
Fuel injection valve for an internal combustion engine Download PDFInfo
- Publication number
- CN105863912A CN105863912A CN201610078715.8A CN201610078715A CN105863912A CN 105863912 A CN105863912 A CN 105863912A CN 201610078715 A CN201610078715 A CN 201610078715A CN 105863912 A CN105863912 A CN 105863912A
- Authority
- CN
- China
- Prior art keywords
- pair
- fuel injector
- valve
- aperture
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
- F02M51/0642—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto
- F02M51/0653—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto the valve being an elongated body, e.g. a needle valve
- F02M51/0657—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto the valve being an elongated body, e.g. a needle valve the body being hollow and its interior communicating with the fuel flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0685—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature and the valve being allowed to move relatively to each other or not being attached to each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
- F02M51/0642—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto
- F02M51/0653—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto the valve being an elongated body, e.g. a needle valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/042—The valves being provided with fuel passages
Abstract
The present disclosure relates to a fuel injection valve for an internal combustions engine and specifically provides a fuel injection valve 100 comprising an injection valve body 108 having at least one inlet path 102, at least one return path 138, and at least one injection nozzle 118. Furthermore, an electromagnet 110 is provided for actuating the fuel injection valve 100, which is installed around a central, axial guide track 134, which comprises at least one pair of first through-passages 132. Furthermore, a first return spring 130 is accommodated in a first chamber 128. Furthermore, an armature 104 is provided which comprises a first axial bore 126 with at least one pair of second through-passages 106 and a pair of third through-passages 124. In addition, a needle valve 116 is provided within an injection chamber 114 which includes a second axial bore 122 with at least one pair of fourth passages 112. The needle valve 116 receives a second return spring 120 and the armature 104.
Description
Following application documents describes and determines the character of the present invention and the mode of execution thereof.
Technical field
It relates to for the fuel injector of internal combustion engine (ICE).
Background technology
According to patent documentation DE2343285, it is provided that electromagnetic fuel injector.Needle is connected with the armature of electromagnet, this armature flow to be connected to the pressure chamber of compensator valve from the seat poppet of valve with permission fuel against back-moving spring when actuated, and now by providing pressure restrictor unit to improve, to increase the needle-valve closing velocity that can pass through residual magnetism negative influence.Limiter unit includes plunger, and its swept volume is same as or the swept volume of slightly smaller than needle, and the power of the back-moving spring that opposing is in limiter hole is moved along fuel flow direction.
Accompanying drawing explanation
Embodiments of the invention describe with reference to the following drawings,
Fig. 1 illustrates the side sectional view of the fuel injector according to the internal combustion engine for being in for the first operational phase that embodiment of the disclosure,
Fig. 2 illustrates the side sectional view of the fuel injector according to the internal combustion engine for being in for the second operational phase that embodiment of the disclosure,
Fig. 3 illustrates the side sectional view of the fuel injector according to the internal combustion engine for being in for the 3rd operational phase that embodiment of the disclosure, and
Fig. 4 illustrates the side sectional view of the fuel injector according to the internal combustion engine for being in for the 4th operational phase that embodiment of the disclosure.
Detailed description of the invention
Fig. 1 illustrates the side sectional view of the fuel injector according to the internal combustion engine for being in for the first operational phase that embodiment of the disclosure.Fuel injector 100 includes the injector body 108 for fuel, and it includes at least one ingress path 102, at least one return path 138 and at least one injection nozzle 118.At least one solenoid 110 for actuated fuel injectors 100 is provided.Solenoid 110 is contained in around central axial guide rail 134, and this central axial guide rail 134 includes at least one pair of first aperture 132.Power supply cord 136 provides electric energy to solenoid 110 for operating.Fuel injector 100 also includes the first back-moving spring 130 being contained in the first chamber 128.First chamber 128 is the space between central axial guide rail 134 and at least one solenoid 110.At least one pair of first aperture 132 provides the opening for the first chamber 128.And, it is provided that armature 104, it includes the first axial hole 126 with at least one pair of the second aperture 106 and a pair the 3rd apertures 124.Armature 104 is centrally located in axial guidance 134, and is inserted through solenoid 110 and the first back-moving spring 130.And, it is provided that needle-valve 116, it includes the second axial hole 122 with at least one pair of the 4th aperture 112.In second back-moving spring 120 is contained in the second axial hole 122 by needle-valve 116 and receive armature 104.Further, it is provided that with the ejection chamber 114 of at least one valve seat.Ejection chamber 114 is in fluid communication with at least one ingress path 102 described, at least one return path 138 described and one injection nozzle 118.
According to the disclosure, the first axial hole 126 is analogous to the through hole of the hollow cylinder with thick main body.Second axial hole 122 is opened at one end, and its other end is closed, and with acting on the pin opening and closing injection nozzle 118.
Return path 138 is formed by the combination in the first axial hole 126 and the second axial hole 122.Fuel axially returns to fuel tank or oil trap or arbitrarily in other fuel collection chamber by return path 138.
Armature 104 keeps contacting with the second back-moving spring 120 and moving about the motion of needle-valve 116.Armature 104 is the piston-shaped structure or piston with head and extending afterbody.Size and the diameter of armature 104 design as requested.When armature 104 moves, stoped the head of armature 104 by guide rail 134.Therefore, head prevents the armature 104 motion beyond guide rail 134.
According to the disclosure, the first chamber 128 accommodating the first back-moving spring 130 gathers the fuel under high pressure from ingress path 102 during the dead status of solenoid 110.First chamber 128 is in fluid communication with return path 138 during being directed at of at least one pair of first aperture 132 and at least one pair of the second aperture 106.Similarly, ejection chamber 114 is also in fluid communication with return path 138 during being directed at of at least one pair of the 3rd aperture 124 and at least one pair of the 4th aperture 112.
According to the disclosure, due to the fuel under high pressure in the first chamber 128 and the expansion of the first back-moving spring 130, needle-valve 116 closes injection nozzle 118.Being additionally, since the pressure and the startup of at least one solenoid 110 being discharged in return path 138 by alignment aperture, needle-valve 116 opens injection nozzle 118.
Fig. 1 illustrates the fuel injector 100 when at least one solenoid 110 does not starts/operates.Ingress path 102 towards ejection chamber 114 is to close, but opens for the first chamber 128.Therefore, the volume of the first chamber 128 is stable.From the fuel under high pressure of ingress path 102 on needle-valve 116 towards injection nozzle 118 application of force having been switched off and guarantee the closed position for fuel injection.Needle-valve 116 is seated at least one seat.Armature 104 is seated on the second back-moving spring 120.In other words, on guide rail 134 and the other end of armature 104 is contained in the needle-valve 116 being seated on the second back-moving spring 120 in one end of armature 104.At least one pair of the 3rd aperture 124 is directed at at least one pair of the 4th aperture 112.Due to this alignment, pressurized fuel available in ejection chamber 114 is passed through alignment aperture and is flowed out from fuel injector 100 by return path 138.By the fuel of return path 138 flow the pressure being continued until in ejection chamber 114 become identical with the pressure of the fuel in return path 138 till.In other words, flowed by the fuel of return path 138 be continued until the traction force upward on needle-valve 116 produced due to the pressure in ejection chamber 114 become identical with the power down of the first back-moving spring 130 acted on needle-valve 116 till.
Fig. 2 illustrates the side sectional view according to the fuel injector for internal combustion engine being in for the second operational phase that embodiment of the disclosure.In the second operational phase, fuel injector 100 is shown as with the solenoid 110 started.When starting at least one solenoid 110, armature 104 stands traction force and moves towards guide rail 134.Meanwhile, needle-valve 116 stands traction force by the solenoid 110 started, but in being maintained in its closed position due to fuel under high pressure existence in the first chamber 128.The traction force of the solenoid 110 by starting acts on both armature 104 and needle-valve 116.Fig. 2 depicts transient state phase, and wherein, armature 104 is shown as contacting guide rail 134 and needle-valve 116 is maintained in its resting position.When armature 104 moves to its extreme position, at least one pair of first aperture 132 starts to be directed at at least one pair of second aperture 106.Extreme position limits the head of the armature 104 contacted with guide rail 134.The pressure of the fuel in the first chamber 128 is more than the pressure of the fuel in return path 138.In the registered, and due to pressure differential, the pressurized fuel from the first chamber 128 is begun to flow through alignment aperture and is gone out from fuel injector 100 by return path 138.Due to fuel by alignment aperture outwardly, the pressure in the first chamber 128 starts to reduce.Therefore, the pressure in the first chamber 128 becomes less than the pressure in ingress path 102, and it helps to promote needle-valve 116 together with the traction force of solenoid 110 further.The most back flow by return path 138 along with pressurized fuel, needle-valve 116 also moves towards the solenoid 110 started and closes the first chamber 128.Fuel in the first chamber 128 continues back to flow, and disables until the pressure in fuel return path 138 and the first chamber 128 becomes identical or solenoid 110.Along with needle-valve 116 moves towards the solenoid 110 started, towards ejection chamber 114 and then ingress path 102 towards injection nozzle 118 start to open at and spray for fuel.Once opening, fuel is ejected in cylinder.
Fig. 3 illustrates the side sectional view of the fuel injector according to the internal combustion engine for being in for the 3rd operational phase that embodiment of the disclosure.In the 3rd operational phase, solenoid 110 continues shown in the starting state after Fig. 2.Injection nozzle 118 is opened towards the motion of solenoid 110 by needle-valve 116.The motion of needle-valve 116 is due to the continuous traction force of solenoid 110 with along with fuel is flowed out by return path 138 and minimizing in fuel pressure in the first chamber 128.Fuel from the first chamber 128 continues through alignment aperture outwardly, until the pressure in the first chamber 128 becomes stable.Once needle-valve 116 contacts with solenoid 110, and the ingress path 102 to ejection chamber 114 also begins to open.Fuel under high pressure is sprayed in the cylinder of internal combustion engine.And, armature 104 and needle-valve 116 all keep tractive/rise/contraction state towards the solenoid 110 started.Owing to needle-valve 116 is towards the motion of the solenoid 110 started, armature 104 keeps against the second back-moving spring 120 of compressive state.
Fig. 4 illustrates the side sectional view of the fuel injector according to the internal combustion engine for being in for the 4th operational phase that embodiment of the disclosure.In the 4th operational phase, disable solenoid 110.When disabling, due to the expansion of the second back-moving spring 120, armature 104 moves away from solenoid 110.When armature 104 moves away from solenoid 110, at least one pair of the 3rd aperture 124 starts to be directed at at least one pair of the 4th aperture 112.Once being directed at, the fuel under high pressure in ejection chamber 114 is begun to flow through alignment aperture and is left by return path 138.Due to the minimizing in the pressure in ejection chamber 114 and the expansion of the first back-moving spring 130, needle-valve 116 returns to its home position.Needle-valve 116 is seated on valve seat and closes injection nozzle 118(as shown in FIG. 1).When solenoid 110 does not starts, armature 104 moves together with needle-valve 116.Therefore, the alignment at least one pair of the 3rd aperture 124 and at least one pair of the 4th aperture 112 is maintained until solenoid 110 is again started up.Once the 4th operational phase terminated, and fuel injector 100 is just that next injection cycle is ready.Needle-valve 116 is seated on valve seat and is also turn off injection nozzle 118, as shown in FIG. 1.In resting position, from the pressure of the fuel stream of ejection chamber 114 to return path 138 more than the fuel ingress path 102.
The first, second, third and fourth operational phase discussed above is for purposes of explanation, and should not understand in a restricted way.
According to embodiment of the disclosure, fuel injector 100 as described above is provided with the 3rd back-moving spring.3rd back-moving spring is contained in the the-head of armature 104.In the aperture segment in the space in the 3rd back-moving spring is seated in the space of the head receiving armature 104 or around fuel return path 138.3rd back-moving spring helps armature 104 about the motion of needle-valve 116.3rd back-moving spring guarantees that armature 104 and needle-valve 116 are about the motion that combines with one another.The rigidity of the 3rd back-moving spring is less than the rigidity of the second back-moving spring 120, but is not only restricted to this.
According to another embodiment of the disclosure, the design of needle-valve 116 must be not only restricted to shown in Fig. 1 to Fig. 2.The shoulder of needle-valve 116 is tapered to provide column construction, i.e. provide the needle-valve 116 not having shoulder.
According to the disclosure, it is provided that the high-pressure injector operated by solenoid 110, compared with conventional fuel injector, its less time lag having to start injection and do not have time lag when closing injection.Armature 104 is operated by identical solenoid 110 with both needle-valves 116 simultaneously.Armature 104 helps the operation of needle-valve 116 by the pressure controlled above and below needle-valve 116.The needle-valve 116 of fuel injector 100 is directly operated by solenoid 110.Being sized so as to of at least one pair of first, second, third and fourth aperture obtains required fuel stream.
It is to be understood that in description above the embodiment explained only is made illustration and do not limits the scope of the invention.Other modifications and changes in many this embodiments and the embodiment explained in the description are foreseen.The scope of the present invention is only limited by the scope of claims.
Claims (10)
1. the fuel injector (100) for internal combustion engine, described fuel injector (100) including:
Injector body (108), it includes at least one ingress path (102), at least one return path (138) and at least one injection nozzle (118)；
At least one solenoid (110), it is used for activating described fuel injector (100), and described solenoid (110) is contained in and includes the central axial guide rail (134) at least one pair of the first aperture (132) around；
First back-moving spring (130), it is contained in the first chamber (128), described first chamber (128) is between described central axial guide rail (134) and described solenoid (110), and at least one pair of first aperture (132) described provides the opening for described first chamber (128)；
Armature (104), it includes with at least one pair of the second aperture (106) and first axial hole (126) at least one pair of the 3rd aperture (124), and described armature (104) is positioned in described central axial guide rail (134) and is inserted through described solenoid (110) and described first back-moving spring (130)；
Needle-valve (116), it includes the second axial hole (122) with at least one pair of the 4th aperture (112), in the second back-moving spring (120) is contained in described second axial hole (122) by described needle-valve (116) and receive described armature (104)；And
Ejection chamber (114), itself and described at least one ingress path (102), at least one return path described (138) and one injection nozzle (118) fluid communication.
2. fuel injector (100) as claimed in claim 1, wherein, described return path (138) is formed by the combination in described first axial hole (126) and described second axial hole (122).
3. fuel injector (100) as claimed in claim 1, wherein, described armature (104) keeps contacting with described second back-moving spring (120), and moves about the motion of described needle-valve (116).
4. fuel injector (100) as claimed in claim 1, wherein, described armature (104) includes head, to prevent the described armature (104) motion beyond described guide rail (134).
5. fuel injector (100) as claimed in claim 1, wherein, during the dead status of described solenoid (110), the accumulation of described first chamber (128) is from the fuel under high pressure of described ingress path (102).
6. fuel injector (100) as claimed in claim 1, wherein, described needle-valve (116) opens and closes the described ingress path (102) of described injection nozzle (118).
7. fuel injector (100) as claimed in claim 1, wherein, during the alignment at least one pair of first aperture (132) described and at least one pair of the second aperture (106) described, described first chamber (128) is in fluid communication with described return path (138).
8. fuel injector (100) as claimed in claim 1, wherein, during the alignment at least one pair of the 3rd aperture (124) described and at least one pair of the 4th aperture (112) described, described ejection chamber (114) is in fluid communication with described return path (138).
9. fuel injector (100) as claimed in claim 1, wherein, due to the fuel under high pressure stored in described first chamber (128) and the expansion of described first back-moving spring (130), described needle-valve (116) closes described injection nozzle (118).
10. fuel injector (100) as claimed in claim 1, wherein, owing to discharging and the startup of described solenoid (110) to the pressure of described return path (138), described needle-valve (116) opens described injection nozzle (118).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN654/CHE/2015 | 2015-02-10 | ||
| IN654CH2015 | 2015-02-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105863912A true CN105863912A (en) | 2016-08-17 |
Family
ID=56498733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610078715.8A Pending CN105863912A (en) | 2015-02-10 | 2016-02-04 | Fuel injection valve for an internal combustion engine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105863912A (en) |
| DE (1) | DE102016200808A1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3913537A (en) * | 1973-08-21 | 1975-10-21 | Bosch Gmbh Robert | Electromechanically controlled fuel injection valve for internal combustion engines |
| US6422209B1 (en) * | 1999-09-01 | 2002-07-23 | Robert Bosch Gmbh | Magnet injector for fuel reservoir injection systems |
| CN1807862A (en) * | 2005-01-21 | 2006-07-26 | 株式会社电装 | Fueling injection system insuring operation at abnormal status |
| CN101429911A (en) * | 2007-10-18 | 2009-05-13 | 德尔菲技术公司 | Fuel injector |
| JP2009176878A (en) * | 2008-01-23 | 2009-08-06 | Toyota Motor Corp | Electromagnetic actuator and injector of common-rail type diesel engine including the same actuator |
| CN101545431A (en) * | 2008-03-27 | 2009-09-30 | 株式会社电装 | Injector |
| CN102803701A (en) * | 2009-06-15 | 2012-11-28 | 德尔福技术控股有限公司 | Fuel injector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2343285A1 (en) | 1973-08-28 | 1975-03-06 | Bosch Gmbh Robert | Electromagnetic fuel injector valve for compression ignition engines - has pressure restrictor unit with same capacity as needle valve |
-
2016
- 2016-01-21 DE DE102016200808.0A patent/DE102016200808A1/en active Pending
- 2016-02-04 CN CN201610078715.8A patent/CN105863912A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3913537A (en) * | 1973-08-21 | 1975-10-21 | Bosch Gmbh Robert | Electromechanically controlled fuel injection valve for internal combustion engines |
| US6422209B1 (en) * | 1999-09-01 | 2002-07-23 | Robert Bosch Gmbh | Magnet injector for fuel reservoir injection systems |
| CN1807862A (en) * | 2005-01-21 | 2006-07-26 | 株式会社电装 | Fueling injection system insuring operation at abnormal status |
| CN101429911A (en) * | 2007-10-18 | 2009-05-13 | 德尔菲技术公司 | Fuel injector |
| JP2009176878A (en) * | 2008-01-23 | 2009-08-06 | Toyota Motor Corp | Electromagnetic actuator and injector of common-rail type diesel engine including the same actuator |
| CN101545431A (en) * | 2008-03-27 | 2009-09-30 | 株式会社电装 | Injector |
| CN102803701A (en) * | 2009-06-15 | 2012-11-28 | 德尔福技术控股有限公司 | Fuel injector |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016200808A1 (en) | 2016-08-11 |
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| C06 | Publication | ||
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| AD01 | Patent right deemed abandoned | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20210427 |