CN105464865B - A kind of double atomizer fuel injectors of diesel engine - Google Patents
A kind of double atomizer fuel injectors of diesel engine Download PDFInfo
- Publication number
- CN105464865B CN105464865B CN201610020522.7A CN201610020522A CN105464865B CN 105464865 B CN105464865 B CN 105464865B CN 201610020522 A CN201610020522 A CN 201610020522A CN 105464865 B CN105464865 B CN 105464865B
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- China
- Prior art keywords
- push rod
- needle
- valve
- oil
- armature
- Prior art date
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Classifications
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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
- F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
- F02M51/0617—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature having two or more electromagnets
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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
- 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
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
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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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
-
- 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
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
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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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
- F02M61/1846—Dimensional characteristics of discharge orifices
Abstract
, can be with two atomizer oil spouts of independent control the invention discloses a kind of double atomizer fuel injectors of diesel engine.Two armature control chambers are set inside armature control volume, armature is equipped with two armature control chambers, there is release throttle orifice connection bottom push rod control chamber below armature control chamber, armature control volume top two armature control chambers of correspondence connect two lock nuts, control the push rod in two inner chambers of push rod body respectively by armature, two push rods of correspondence set two needle-valves, oil spout hole number on one atomizer of each noticeable degree, two atomizers can set varying number or identical quantity according to actual conditions.The fuel injector can realize that secondary injection process is sprayed the change in space twice, better profits from the space atomization of fuel so that diesel oil atomization is uniform, reduces diesel particulate emission；Oil spout twice is independently controlled as a result of two needle-valves, the time interval of secondary injection can be controlled in smaller range.
Description
Technical field
The present invention relates to diesel injector construction applications, a kind of double atomizer electronic control injections of diesel engine are related in particular to
Device.
Background technology
Common rail injection formula oil supply system is by high-pressure oil pump, common feeder line, fuel injector, ECU (ECU) and some pipes
Each fuel injector in road pressure sensor composition, system is connected by respective high-pressure oil pipe with common feeder line, public
Fuel feed pump plays the effect of fluid power pressure accumulation to fuel injector.During work, high-pressure oil pump delivers fuel into common feeder line with high pressure, high
Pressure oil pump, pressure sensor and ECU composition Closed loop operations, accurate control is realized to the oil pressure in common feeder line, is thoroughly changed
The phenomenon that charge oil pressure changes with engine speed.
Electric-controlled fuel injector is most critical and most complicated part in joint-track type fuel system, and its effect is sent out according to ECU
The control signal gone out, by controlling the opening and closing of magnetic valve, by the fuel oil in high pressure oil rail with optimal injection timing, spray
Oil mass and fuel injection rate spray into the combustion chamber of diesel engine.
High-pressure common-rail injection system can be controlled to fuel injection rate and fuel injection characteristic, utilize Electrocontrolled high-pressure common rail fuel injector
Secondary injection or multi-injection are easily realized, appropriate secondary injection ratio can reduce highest burning temperature in cylinder with injection timing
Degree, suppresses pinking, improves fuel economy, combustion stability, the emission performance of sub-load.
The content of the invention
It is an object of the invention to：Spray area is overlapping twice when realizing secondary injection for common fuel injector, easily leads
The shortcoming of partial mixture overrich is caused, is proposed a kind of with two inner chambers, the fuel injector of two nozzles.
To achieve the above object, present invention employs following technical scheme：A kind of electric control oil injector of diesel engine, armature control
Internal portion sets two armature to control to be equipped with inner chamber, described two armature control inner chambers below armature, armature control inner chamber
Provided with release throttle orifice connection bottom push rod control chamber, correspondence two armature control inner chambers in armature control volume top connect two locks
Return spring, coil are respectively provided with tight nut, described two lock nuts, lock nut peripheral hardware puts back into oil draining bolt, coil connectors,
There is back oil road in oil return bolt；Connected below armature control volume by internal thread and set two inside push rod body, the push rod body
Return spring in push rod and return spring, each push rod inner chamber is equipped with push rod inner chamber, two push rod inner chambers to be enclosed under push rod
Portion, push rod top sets push rod control chamber；Needle-valve body is connected by swivel nut below push rod body, needle-valve body sets two oil spouts in left and right
Set respectively on mouth, left and right atomizer in nozzle opening, two atomizer correspondences, two needle-valve inner chambers, each needle chamber and be provided with needle-valve
With needle-valve pressure chamber.
Further, two push rod controls of connection above oil duct and oil inlet, the oil duct are set in the middle of two push rod inner chambers
Two needle-valve pressure chambers of connection below chamber and oil inlet, oil duct, are controlled to two push rods simultaneously by the oil inlet and oil duct
Chamber and two needle-valve pressure chamber fuel feeding.
Further, left side atomizer arranges 4 φ 0.15mm nozzle openings, wherein three lateral nozzle openings in left side, nozzle opening
120 ° of cone angle, a center nozzle opening；Right side atomizer arranges 4 φ 0.15mm nozzle openings, wherein three lateral oil spouts in right side
Hole, 120 ° of nozzle opening cone angle, a center nozzle opening.
Further, when left side coil connectors are powered, the lateral nozzle opening in left side and Left-side center oil spout on the atomizer of left side
Hole oil spout, after the power-off of left side coil connectors, the lateral nozzle opening in left side and Left-side center nozzle opening are closed, and right side coil connectors lead to
When electric, the lateral nozzle opening in right side and right center nozzle opening oil spout on the atomizer of right side, after the power-off of right side coil connectors, right side
Lateral nozzle opening and right center nozzle opening are closed, by controlling the coil connectors alternate energisation of left and right two, power-off, Ke Yishi
Existing two atomizer alternating oil spouts in left and right, realize the change in space of spraying twice.
Beneficial effects of the present invention：It can realize that secondary injection process is sprayed the change in space twice, better profits from combustion
The space atomization of material so that diesel oil atomization is uniform, reduces diesel particulate emission；Independently controlled as a result of two needle-valves
Oil spout twice is made, the time interval of control secondary injection can be controlled in short-range.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is structural representation of the invention；
In figure：1. oil return bolt I；2. oil return bolt II；3. back oil road I；4. back oil road II；5th, lock nut I；6. locking
Nut II；7. coil connectors I；8. coil connectors II；；9. coil I；10. coil II；11. return spring I；12. return spring
Ⅱ；13. armature I；14. armature II；15. spill port I；16. spill port II；17. oil inlet；18. armature control volume；19. ball valve
Ⅰ；20. ball valve II；21. discharge throttle orifice I；22. discharge throttle orifice II；23. oil-filled throttle orifice I；24. oil-filled throttle orifice II；25.
Push rod control chamber I；26. push rod control chamber II；27. push rod I；28. push rod II；29. oil duct；30. push rod body；31. return spring
Ⅲ；32. return spring IV；33. needle-valve I；34. needle-valve II；35. needle-valve pressure chamber I；36. needle-valve pressure chamber II；37. needle-valve body；
38. swivel nut；39. the lateral nozzle opening in left side；40. Left-side center nozzle opening；41. the lateral nozzle opening in right side；42nd, right center oil spout
Hole.
Fig. 2 is zoomed-in view at I in Fig. 1；
Fig. 3 is zoomed-in view at II in Fig. 1；
Fig. 4 is the sectional view in Fig. 1 along A-A directions；
Fig. 5 is the sectional view in Fig. 1 along B-B directions.
Embodiment
To make the purpose and technical scheme of the embodiment of the present invention clearer, below in conjunction with the attached of the embodiment of the present invention
Figure, the technical scheme to the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is of the invention
A part of embodiment, rather than whole embodiments.Based on described embodiments of the invention, those of ordinary skill in the art
The every other embodiment obtained on the premise of without creative work, belongs to the scope of protection of the invention.
The structure of the present embodiment as shown in Figure 1, sets two armature to control inner chamber, two inside armature control volume (18)
It is respectively equipped with armature control inner chamber below armature I (13), armature II (14), left side armature control inner chamber provided with release throttle orifice
Provided with release throttle orifice II (22) connection bottom below I (21) connection bottom push rod control chamber I (25), right side armature control inner chamber
Push rod control chamber II (26), armature control volume (18) top correspondence two armature control inner chambers connect respectively lock nut I (5),
Return spring I (11), coil I (9) are set in lock nut II (6), the lock nut I (5), and lock nut I (5) is set outside
There is back oil road I (3) in oil return bolt I (1), coil connectors I (7), oil return bolt I (1)；Set in the lock nut II (6)
Return spring II (12), coil II (10), lock nut II (6) peripheral hardware put back into oil draining bolt II (2), coil connectors II (8), oil return
There is back oil road II (4) in bolt II (2)；Push rod body (30), the push rod body are connected through a screw thread below armature control volume (18)
(30) it is equipped with push rod and return spring, left side push rod inner chamber and returns in two push rod inner chambers of internal setting, two push rod inner chambers
Position spring III (31) is enclosed on push rod I (27) bottom, and push rod I (27) top is returned in push rod control chamber I (25), right side push rod inner chamber
Position spring IV (32) is enclosed on push rod II (28) bottom, and push rod II (28) top is push rod control chamber II (26)；The lower section of push rod body 18
Needle-valve body (37) is connected by swivel nut (38), needle-valve body (37) sets and set respectively on two atomizers in left and right, left and right atomizer
Needle-valve I (33) and needle-valve pressure chamber I are provided with nozzle opening, two atomizer correspondences, two needle-valve inner chambers, left side needle-valve inner chamber
(35) needle-valve II (34) and needle-valve pressure chamber II (36), are provided with right side needle-valve inner chamber；Oil duct is set in the middle of two push rod inner chambers
(29) under and oil inlet (17), oil duct (29) top connection push rod control chamber I (25) and push rod control chamber II (26), oil duct (29)
Portion's connection needle-valve pressure chamber I (35) and needle-valve pressure chamber II (36), oil inlet (17) connection oil duct (29) and fuel inlet fitting；Left side
Atomizer arranges 4 φ 0.15mm nozzle openings, wherein three lateral nozzle openings in left side (39), 120 ° of nozzle opening cone angle, a left side
Side center nozzle opening (40)；Right side atomizer arranges 4 φ 0.15mm nozzle openings, wherein three lateral nozzle openings in right side (41),
120 ° of nozzle opening cone angle, a right center nozzle opening (42).When coil connectors I (7) are powered, the left side side on the atomizer of left side
To nozzle opening (39) and Left-side center nozzle opening (40) oil spout, after coil connectors I (7) power-off, the lateral nozzle opening in left side (39) and
Left-side center nozzle opening (40) is closed, when coil connectors II (8) are powered, the lateral nozzle opening in right side (41) on the atomizer of right side
With right center nozzle opening (42) oil spout, after coil connectors II (8) power-off, the lateral nozzle opening in right side (41) and right center oil spout
Hole (42) is closed, and passes through control coil joint I (7), coil connectors II (8) alternate energisation, power-off, it is possible to achieve left and right two
Atomizer replaces oil spout, realizes the change in space of spraying twice.
When actual use, fuel injector is fixed on engine body by pressing plate, fuel feed pump by fuel inlet fitting connect into
Hydraulic fluid port (17), oil return bolt I (1), oil return bolt II (2) are connected with oil return pipe, coil connectors I (7), coil connectors II (8) with
The electrical connector connection of control unit of engine.
When engine works, savings hydraulic oil in fuel feed pump, hydraulic oil passes through fuel feed pump and oil inlet (17) and oil duct
(29) into the push rod control chamber I (25) of fuel injector, push rod control chamber II (26), needle-valve pressure chamber I (35), push rod pressure chamber II
(36)。
Under coil connectors I (7), the obstructed electricity condition of coil connectors II (8), armature I (13) is pre- in return spring I (11)
Under clamp force effect, ball valve I (19) blocks release throttle orifice I (21), and armature II (14) is acted in return spring II (12) pretightning force
Under, the hydraulic oil that ball valve II (20) is blocked in release throttle orifice II (22), push rod control chamber I (25) and needle-valve pressure chamber I (35)
Pressure is equal, and the high pressure oil pressure in push rod control chamber II (26) and needle-valve pressure chamber II (36) is equal, and needle-valve I (33) is in return
Left side nozzle opening is blocked under the effect of spring III (31) elastic force, needle-valve II (34) blocks the right side under the effect of return spring IV (32) elastic force
Side spray oilhole, now fuel injector be closed.
Coil connectors I (7) are powered and coil connectors II (8) when being not powered on, and the magnetic force that coil I (9) is produced overcomes return bullet
The pretightning force of spring I (11), makes armature I (13) motion upwards, ball valve I (19) opens release throttle orifice I (21), by release throttle orifice
The hydraulic oil that I (21) are overflowed flows to oil return pipe through spill port I (15), back oil road I (3), now the pressure in push rod control chamber I (25)
Power is less than the pressure of needle-valve pressure chamber I (35), and under pressure differential effect, needle-valve I (33) overcomes the elastic force of return spring III (31)
Move upwards, now the lateral nozzle opening (39) in left side, Left-side center nozzle opening (40) are opened, the height in needle-valve pressure chamber I (35)
Force feed is by the gap between needle-valve I (33) and needle-valve body (37) left side inner chamber from the lateral nozzle opening in left side (39), Left-side center
Nozzle opening (40) is sprayed into cylinder, and now fuel injector is in left side atomizer working condition.
If now coil connectors I (7) are powered off, armature I (13) return under return spring I (11) effect, ball valve I (19) pressure
Tight release throttle orifice I (21), makes the pressure of pressure and needle-valve pressure chamber I (35) in push rod control chamber I (25) reach unanimity, pin
Valve I (33) return, the lateral nozzle opening in left side (39), Left-side center nozzle opening (40) under the elastic force effect of return spring III (31)
It is closed.
Coil connectors II (8) are powered and coil connectors I (7) when being not powered on, and the magnetic force that coil II (10) is produced overcomes return
The pretightning force of spring II (12), makes armature II (14) motion upwards, ball valve II (20) opens release throttle orifice II (22), by discharging
The hydraulic oil that throttle orifice II (22) overflows flows to oil return pipe through spill port II (16) and back oil road II (4), now push rod control chamber
Pressure in II (26) is less than the pressure of needle-valve pressure chamber II (36), and under pressure differential effect, needle-valve II (34) overcomes return bullet
The elastic force of spring IV (32) is moved upwards, and now the lateral nozzle opening (41) in right side, right center nozzle opening (42) are opened, needle-valve pressure
Hydraulic oil in chamber II (36) is by the gap between inner chamber on the right side of needle-valve II (34) and needle-valve body (37) from the lateral oil spout in right side
Hole (41), right center nozzle opening (42) are sprayed into cylinder, and now fuel injector is in right side atomizer working condition.
If now coil connectors II (8) are powered off, armature II (14) return, ball valve under the effect of return spring II (12) elastic force
II (20) compress release throttle orifice II (22), make the pressure of the pressure and needle-valve pressure chamber II (36) in push rod control chamber II (26)
Reach unanimity, needle-valve II (34) is under the elastic force effect of return spring IV (32) in return, the lateral nozzle opening in right side (41), right side
Heart nozzle opening (42) is closed.
Therefore, by switching on and off coil connectors I (7) and coil connectors II (8), it is possible to two nozzles in control left and right
Alternately oil spout, realizes the change in space of spraying twice.
Claims (7)
1. a kind of double atomizer fuel injectors of diesel engine, can be realized in secondary injection twice with two atomizer oil spouts of independent control
The change in oil spout region, by oil return bolt I (1), oil return bolt II (2), back oil road I (3), back oil road II (4), lock nut I
(5), lock nut II (6), coil connectors I (7), coil connectors II (8), coil I (9), coil II (10), return spring I
(11), return spring II (12), armature I (13), armature II (14), spill port I (15), spill port II (16), oil inlet (17),
Armature control volume (18), ball valve I (19), ball valve II (20), release throttle orifice I (21), release throttle orifice II (22), oil-filled throttling
Hole I (23), oil-filled throttle orifice II (24), push rod control chamber I (25), push rod control chamber II (26), push rod I (27), push rod II
(28), oil duct (29), push rod body (30), return spring III (31), return spring IV (32), needle-valve I (33), needle-valve II (34),
Needle-valve pressure chamber I (35), needle-valve pressure chamber II (36), needle-valve body (37), swivel nut (38), the lateral nozzle opening in left side (39), left side
Center nozzle opening (40), the lateral nozzle opening in right side (41), right center nozzle opening (42) composition, it is characterised in that armature is controlled
Two armature are set to control to be respectively equipped with armature I (13), armature II in inner chamber, two armature control inner chambers inside body (18)
(14), provided with release throttle orifice I (21) connection bottom push rod control chamber I (25), right side armature below left side armature control inner chamber
Control below inner chamber provided with release throttle orifice II (22) connection bottom push rod control chamber II (26), armature control volume (18) top pair
Answer two armature control inner chambers to connect respectively to set back in lock nut I (5), lock nut II (6), the lock nut I (5)
Position spring I (11), coil I (9), lock nut I (5) peripheral hardware put back into oil draining bolt I (1), coil connectors I (7), oil return bolt I (1)
Inside there is back oil road I (3)；Return spring II (12), coil II (10), lock nut II (6) are set in the lock nut II (6)
Peripheral hardware, which is put back into oil draining bolt II (2), coil connectors II (8), oil return bolt II (2), back oil road II (4)；Armature control volume (18)
Lower section is connected through a screw thread inside push rod body (30), the push rod body (30) and set in two push rod inner chambers, two push rod inner chambers
It is equipped with return spring III (31) in push rod and return spring, left side push rod inner chamber and is enclosed on push rod I (27) bottom, push rod I (27)
Top is that return spring IV (32) is enclosed on push rod II (28) bottom, push rod II in push rod control chamber I (25), right side push rod inner chamber
(28) top is push rod control chamber II (26)；The lower section of push rod body 18 connects needle-valve body (37), needle-valve body (37) by swivel nut (38)
Set and nozzle opening is set respectively on two atomizers in left and right, left and right atomizer, two atomizer correspondences, two needle-valve inner chambers, left side
It is provided with needle-valve inner chamber in needle-valve I (33) and needle-valve pressure chamber I (35), right side needle-valve inner chamber and is provided with needle-valve II (34) and needle valve pressed
Power chamber II (36)；Oil duct (29) and oil inlet (17), oil duct (29) top connection push rod control are set in the middle of two push rod inner chambers
Chamber I (25) and push rod control chamber II (26), oil duct (29) bottom connection needle-valve pressure chamber I (35) and needle-valve pressure chamber II (36),
Oil inlet (17) connection oil duct (29) and fuel inlet fitting；Left side atomizer arranges 4 φ 0.15mm nozzle openings, wherein three left sides
Lateral nozzle opening (39), 120 ° of nozzle opening cone angle, a Left-side center nozzle opening (40)；Right side atomizer arranges 4 φ
0.15mm nozzle openings, wherein three lateral nozzle openings in right side (41), 120 ° of nozzle opening cone angle, a right center nozzle opening
(42)；When coil connectors I (7) are powered, the lateral nozzle opening in left side (39) and Left-side center nozzle opening (40) on the atomizer of left side
Oil spout, after coil connectors I (7) power-off, the lateral nozzle opening in left side (39) and Left-side center nozzle opening (40) are closed, coil connectors
When II (8) are powered, the lateral nozzle opening in right side (41) and right center nozzle opening (42) oil spout on the atomizer of right side, coil connectors
After the power-off of II (8), the lateral nozzle opening in right side (41) and right center nozzle opening (42) are closed, and pass through control coil joint I
(7), coil connectors II (8) alternate energisation, power-off, it is possible to achieve the atomizer alternating oil spout of left and right two, realize sky of spraying twice
Between change.
2. the double atomizer fuel injectors of a kind of diesel engine according to claim 1, it is characterised in that above the oil duct (29)
Connect connection needle-valve pressure chamber I below oil inlet (17) and push rod control chamber I (25), push rod control chamber II (26), oil duct (29)
And needle-valve pressure chamber II (36) (35).
3. a kind of double atomizer fuel injectors of diesel engine according to claim 1, it is characterised in that the armature control volume
(18) internal provided with two armature control inner chambers, left side armature controls to be provided with armature I (13) in inner chamber, right side armature control inner chamber
In be provided with armature II (14), armature control volume (18) top correspondence two armature control inner chambers connect respectively lock nut I (5),
Lock nut II (6).
4. the double atomizer fuel injectors of a kind of diesel engine according to claim 1, it is characterised in that in the push rod body (30)
Portion is provided with return spring III (31) in two push rod inner chambers, left side push rod inner chamber and is enclosed on push rod I (27) bottom, push rod I (27)
Portion is that return spring IV (32) is enclosed on push rod II (28) bottom, push rod II (28) in push rod control chamber I (25), right side push rod inner chamber
Top is push rod control chamber II (26).
5. the double atomizer fuel injectors of a kind of diesel engine according to claim 1, it is characterised in that the needle-valve body (37) sets
Put and nozzle opening is set respectively on two atomizers in left and right, left and right atomizer, two atomizer correspondences, two needle-valve inner chambers, left side pin
It is provided with valve insertion in needle-valve I (33) and needle-valve pressure chamber I (35), right side needle-valve inner chamber and is provided with needle-valve II (34) and needle-valve pressure
Chamber II (36).
6. the double atomizer fuel injectors of a kind of diesel engine according to claim 1, it is characterised in that the needle-valve body (37) is left
The oil spout hole count on nozzle opening, the atomizer of left and right two is set to be set to according to actual conditions respectively on right two atomizers
1-8 varying number asymmetric distribution or identical quantity are symmetrical.
7. a kind of a kind of method of work of the double atomizer fuel injectors of diesel engine as claimed in claim 1, it is characterised in that coil
Joint I (7) is powered and coil connectors II (8) when being not powered on, and the magnetic force that coil I (9) is produced makes armature I (13) overcome return spring
The elastic force of I (11) is moved upwards, and ball valve I (19) opens release throttle orifice I (21), the hydraulic oil in push rod control chamber I (25) from
Release throttle orifice I (21) flows to oil return pipe after overflowing through spill port I (15), back oil road I (3), makes high in push rod control chamber I (25)
The pressure of the force feed pressure oily less than needle-valve pressure chamber I (35) mesohigh, needle-valve I (33) overcomes return bullet under pressure differential effect
The elastic force of spring III (31) is moved upwards, and left side atomizer is opened so that the hydraulic oil in needle-valve pressure chamber I (35) is through needle-valve I
(33) left side lateral nozzle opening (39) and Left-side center of the gap between the inner chamber of needle-valve body (37) left side from left side atomizer
Nozzle opening (40) sprays；If now coil connectors I (7) are powered off, armature I (13) return, ball valve under return spring I (11) effect
I (19) compress release throttle orifice I (21), and making the pressure of pressure and needle-valve pressure chamber I (35) in push rod control chamber I (25) tends to
Unanimously, needle-valve I (33) return under the elastic force effect of return spring III (31), the lateral nozzle opening in left side (39), Left-side center spray
Oilhole (40) is closed；Coil connectors II (8) are powered and coil connectors I (7) when being not powered on, and the magnetic force that coil II (10) is produced makes
Armature II (14) overcomes the elastic force of return spring II (12) to move upwards, and the hydraulic oil in push rod control chamber II (26) is saved from release
Discharge orifice II (22) flows to oil return pipe after overflowing through spill port II (16), back oil road II (4), makes push rod control chamber II (26) mesohigh
The pressure of the oil pressure oily less than needle-valve pressure chamber II (36) mesohigh, needle-valve II (34) overcomes return bullet under pressure differential effect
The elastic force of spring IV (32) is moved upwards, and right side atomizer is opened so that the hydraulic oil in needle-valve pressure chamber II (36) is through needle-valve II
(34) right side lateral nozzle opening (41) and right center of the gap between the inner chamber of needle-valve body (37) right side from right side atomizer
Nozzle opening (42) sprays；If now coil connectors II (8) are powered off, armature II (14) is acted on next time in return spring II (12) elastic force
Position, ball valve II (20) compresses release throttle orifice II (22), makes the pressure and needle-valve pressure chamber II in push rod control chamber II (26)
(36) pressure reaches unanimity, needle-valve II (34) return, the lateral nozzle opening in right side under the elastic force effect of return spring IV (32)
(41), right center nozzle opening (42) is closed, therefore alternately closing coil joint I (7) and coil connectors II (8) can just be controlled
The atomizer alternating oil spout of system left and right two, realizes the change in space of spraying twice.
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| CN201610020522.7A CN105464865B (en) | 2016-01-13 | 2016-01-13 | A kind of double atomizer fuel injectors of diesel engine |
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| CN201610020522.7A CN105464865B (en) | 2016-01-13 | 2016-01-13 | A kind of double atomizer fuel injectors of diesel engine |
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| CN105464865B true CN105464865B (en) | 2017-11-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11815025B2 (en) | 2021-05-07 | 2023-11-14 | General Electric Company | Fuel nozzle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108443040A (en) * | 2018-05-25 | 2018-08-24 | 李玉龙 | Medium and heavy-duty engines monomer crosspointer valve twin-jet nozzle high pressure common rail injector |
| US11225933B2 (en) | 2018-07-20 | 2022-01-18 | Caterpillar Inc. | Twin outlet check liquid fuel injector for dual fuel system |
| US10364934B1 (en) | 2018-08-14 | 2019-07-30 | Caterpillar Inc. | Support structure for supporting a conduit of an engine |
| US10767610B2 (en) | 2018-08-21 | 2020-09-08 | Caterpillar Inc. | Liquid fuel injector having dual nozzle outlet sets, fuel system, and method |
| US10989153B2 (en) | 2018-08-21 | 2021-04-27 | Caterpillar Inc. | Fuel system for reducing fuel targeting errors and engine operating method |
| US11448175B1 (en) | 2021-06-03 | 2022-09-20 | General Electric Company | Fuel nozzle |
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| CN101694195A (en) * | 2009-08-20 | 2010-04-14 | 余姚市舒春机械有限公司 | Double-needle-valve matching part of marine diesel engine |
| DE102013000048B3 (en) * | 2013-01-07 | 2014-06-12 | L'orange Gmbh | Doppelnadelinjektor |
| CN103967671A (en) * | 2014-05-22 | 2014-08-06 | 中国北方发动机研究所(天津) | Dual-valve orifice-area-variable fuel nozzle |
| CN204783397U (en) * | 2015-07-09 | 2015-11-18 | 胡松平 | Diesel oil, alcohols double fuel integral type sprayer |
| CN205478036U (en) * | 2016-01-13 | 2016-08-17 | 吉林大学 | Two fuel sprayer sprayers of diesel engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7556017B2 (en) * | 2006-03-31 | 2009-07-07 | Caterpillar Inc. | Twin needle valve dual mode injector |
| US20150247468A1 (en) * | 2015-04-30 | 2015-09-03 | Caterpillar Inc. | Method to operate a dual-nozzle fuel injector |
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Patent Citations (5)
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| CN101694195A (en) * | 2009-08-20 | 2010-04-14 | 余姚市舒春机械有限公司 | Double-needle-valve matching part of marine diesel engine |
| DE102013000048B3 (en) * | 2013-01-07 | 2014-06-12 | L'orange Gmbh | Doppelnadelinjektor |
| CN103967671A (en) * | 2014-05-22 | 2014-08-06 | 中国北方发动机研究所(天津) | Dual-valve orifice-area-variable fuel nozzle |
| CN204783397U (en) * | 2015-07-09 | 2015-11-18 | 胡松平 | Diesel oil, alcohols double fuel integral type sprayer |
| CN205478036U (en) * | 2016-01-13 | 2016-08-17 | 吉林大学 | Two fuel sprayer sprayers of diesel engine |
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| US11815025B2 (en) | 2021-05-07 | 2023-11-14 | General Electric Company | Fuel nozzle |
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