CN205478036U - Two fuel sprayer sprayers of diesel engine - Google Patents
Two fuel sprayer sprayers of diesel engine Download PDFInfo
- Publication number
- CN205478036U CN205478036U CN201620030221.8U CN201620030221U CN205478036U CN 205478036 U CN205478036 U CN 205478036U CN 201620030221 U CN201620030221 U CN 201620030221U CN 205478036 U CN205478036 U CN 205478036U
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- Prior art keywords
- push rod
- needle
- armature
- oil
- nozzle opening
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Abstract
The utility model relates to a two fuel sprayer sprayers of diesel engine can two fuel sprayer oil spouts of independent control. Armature control body inside sets up two armature control chambeies, all be equipped with armature in two armature control chambeies, there is release orifice intercommunication lower part ejector pin control chamber armature control chamber below, armature control body upper portion corresponds two armature control chambeies and connects two check nut, control the ejector pin in two inner chambers of the ejector pin body respectively through armature, it sets up two needle valves to correspond two ejector pins, fuel sprayer of every needle valve control, nozzle opening quantity on two fuel sprayers can set up different quantity or the same quantity according to actual conditions. The change in twice spraying space of secondary injection process can be realized to this sprayer, utilizes the space atomizing of fuel better for the diesel oil atomizing is even, reduces diesel particulate and discharges, because adopted twice oil spout of independent control respectively of two needle valves, secondary injection's time interval can control at less within range.
Description
Technical field
This utility model relates to diesel injector construction applications, relates in particular to the double atomizer electric-controlled fuel injector of a kind of diesel engine.
Background technology
Common rail injection formula oil supply system is made up of high-pressure oil pump, common feeder line, fuel injector, ECU (ECU) and some pipe pressure sensors, each fuel injector in system is connected with common feeder line by respective high-pressure oil pipe, and fuel injector is played fluid power pressure accumulation effect by common feeder line.During work, high-pressure oil pump delivers fuel into common feeder line with high pressure, and high-pressure oil pump, pressure transducer and ECU form Closed loop operation, realizes the oil pressure in common feeder line accurately controlling, revolutionizes the phenomenon that charge oil pressure changes with engine speed.
Electric-controlled fuel injector is most critical and the most complicated parts in joint-track type fuel system, its effect is the control signal sent according to ECU, by controlling the opening and closing of electromagnetic valve, the fuel oil in high pressure oil rail is sprayed into optimal injection timing, distributive value and fuel injection rate the combustor of diesel engine.
Fuel injection rate and fuel injection characteristic can be controlled by high-pressure common-rail injection system, Electrocontrolled high-pressure common rail fuel injector is utilized easily to realize secondary injection or multi-injection, suitable secondary injection ratio and injection timing can reduce maximum combustion temperature in cylinder, suppression pinking, improves the fuel economy of sub-load, combustion stability, emission performance.
Utility model content
The purpose of this utility model is: when realizing secondary injection for common fuel injector, twice spray area is overlapping, the shortcoming being easily caused partial mixture overrich, proposes one and has two inner chambers, the fuel injector of two nozzles.
For achieving the above object, this utility model adopts the technical scheme that a kind of electric control oil injector of diesel engine, two armature are set inside armature control volume and control inner chamber, said two armature controls to be equipped with armature in inner chamber, armature controls to be provided with release throttle orifice connection bottom push rod below inner chamber and controls chamber, corresponding two armature in armature control volume top control inner chamber and connect two lock nuts, return spring, coil it is respectively provided with in said two lock nut, lock nut peripheral hardware puts back into oil draining bolt, coil connectors, has back oil road in oil return bolt；Connecting push rod body by female thread below armature control volume, in described push rod body, portion arranges two push rod inner chambers, is equipped with push rod and return spring in two push rod inner chambers, and in each push rod inner chamber, return spring is enclosed within push rod bottom, and push rod top arranges push rod and controls chamber；Connecting needle-valve body by swivel nut below push rod body, needle-valve body arranges two atomizers in left and right, and left and right atomizer is respectively provided with nozzle opening, two corresponding two needle-valve inner chambers of atomizer, is provided with needle-valve and needle-valve pressure chamber in each needle chamber.
Further, in the middle of two push rod inner chambers, oil duct and oil-in are set, connect two push rods above described oil duct and control chamber and oil-in, below oil duct, connect two needle-valve pressure chambers, control chamber and two needle-valve pressure chamber fuel feeding to two push rods by described oil-in and oil duct simultaneously.
Further, left side atomizer arranges 4 φ 0.15mm nozzle openings, wherein three lateral nozzle openings in left side, nozzle opening cone angle 120 °, a center nozzle opening；Right side atomizer arranges 4 φ 0.15mm nozzle openings, wherein three lateral nozzle openings in right side, nozzle opening cone angle 120 °, a center nozzle opening.
Further, during the coil connectors energising of left side, the lateral nozzle opening in left side on the atomizer of left side and Left-side center nozzle opening oil spout, after the coil connectors power-off of left side, the lateral nozzle opening in left side and Left-side center nozzle opening are closed, during the coil connectors energising of right side, the lateral nozzle opening in right side on the atomizer of right side and right center nozzle opening oil spout, after the coil connectors power-off of right side, the lateral nozzle opening in right side and right center nozzle opening are closed, by two coil connectors alternate energisations about controlling, power-off, two atomizers in left and right can be realized and replace oil spout, realize the change in twice spraying space.
The beneficial effects of the utility model: secondary injection process can be realized and spray for twice change in space, better profit from the space atomization of fuel so that diesel oil atomization is uniform, reduces diesel particulate emission；Independently controlling twice oil spout owing to have employed two needle-valves, the time interval controlling secondary injection can control in short-range.
Accompanying drawing explanation
With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is structural representation of the present utility model；
In figure: 1. oil return bolt I；2. oil return bolt II；3. back oil road I；4. back oil road II；5, lock nut I；6. lock nut II；7. coil connectors I；8. coil connectors II；9. coil I；10. coil II；11. return springs I；12. return springs II；13. armature I；14. armature II；15. spill ports I；16. spill ports II；17. oil-ins；18. armature control volumes；19. ball valves I；20. ball valves II；21. release throttle orifices I；22. release throttle orifices II；23. oil-filled throttle orifices I；24. oil-filled throttle orifices II；25. push rods control chamber I；26. push rods control chamber II；27. push rods I；28. push rods II；29. oil ducts；30. push rod bodies；31. return springs III；32. return springs IV；33. needle-valves I；34. needle-valves II；35. needle-valve pressure chamber I；36. needle-valve pressure chambers II；37. needle-valve bodies；38. swivel nuts；Lateral nozzle opening on the left of in the of 39.；40. Left-side center nozzle openings；Lateral nozzle opening on the right side of in the of 41.；42, right center nozzle opening.
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 direction；
Fig. 5 is the sectional view in Fig. 1 along B-B direction.
Detailed description of the invention
Purpose and technical scheme for making this utility model embodiment are clearer, below in conjunction with the accompanying drawing of this utility model embodiment, are clearly and completely described the technical scheme of this utility model embodiment.Obviously, described embodiment is a part of embodiment of the present utility model rather than whole embodiments.Based on described embodiment of the present utility model, the every other embodiment that those of ordinary skill in the art are obtained on the premise of without creative work, broadly fall into the scope of this utility model protection.
nullThe structure of the present embodiment is as shown in Figure 1，Armature control volume (18) is internal arranges two armature control inner chambers，Two armature control to be respectively equipped with armature I (13) in inner chamber、Armature II (14)，Left side armature controls to be provided with release throttle orifice I (21) connection bottom push rod below inner chamber and controls chamber I (25)，Right side armature controls to be provided with release throttle orifice II (22) connection bottom push rod below inner chamber and controls chamber II (26)，Corresponding two armature in armature control volume (18) top control inner chamber and connect lock nut I (5) respectively、Lock nut II (6)，In described lock nut I (5), return spring I (11) is set、Coil I (9)，Lock nut I (5) peripheral hardware puts back into oil draining bolt I (1)、Coil connectors I (7)，Back oil road I (3) is had in oil return bolt I (1)；Return spring II (12), coil II (10) are set in described lock nut II (6), lock nut II (6) peripheral hardware puts back into oil draining bolt II (2), coil connectors II (8), has back oil road II (4) in oil return bolt II (2)；Armature control volume (18) lower section is threaded connection push rod body (30), described push rod body (30) is internal arranges two push rod inner chambers, two push rod inner chambers are equipped with push rod and return spring, in the push rod inner chamber of left side, return spring III (31) is enclosed within push rod I (27) bottom, push rod I (27) top is that push rod controls chamber I (25), in the push rod inner chamber of right side, return spring IV (32) is enclosed within push rod II (28) bottom, and push rod II (28) top is that push rod controls chamber II (26)；Needle-valve body (37) is connected by swivel nut (38) below push rod body 18, needle-valve body (37) arranges two atomizers in left and right, it is respectively provided with nozzle opening on the atomizer of left and right, two corresponding two needle-valve inner chambers of atomizer, left side needle-valve inner chamber is provided with needle-valve I (33) and needle-valve pressure chamber I (35), right side needle-valve inner chamber is provided with needle-valve II (34) and needle-valve pressure chamber II (36)；Oil duct (29) and oil-in (17) are set in the middle of two push rod inner chambers, oil duct (29) top connection push rod controls chamber I (25) and push rod controls chamber II (26), oil duct (29) bottom connection needle-valve pressure chamber I (35) and needle-valve pressure chamber II (36), oil-in (17) connection oil duct (29) and fuel inlet fitting；Left side atomizer arranges 4 φ 0.15mm nozzle openings, wherein three the lateral nozzle opening in left sides (39), nozzle opening cone angle 120 °, a Left-side center nozzle opening (40)；Right side atomizer arranges 4 φ 0.15mm nozzle openings, wherein three the lateral nozzle opening in right sides (41), nozzle opening cone angle 120 °, a right center nozzle opening (42).During coil connectors I (7) energising, the lateral nozzle opening in left side (39) on the atomizer of left side and Left-side center nozzle opening (40) oil spout, after coil connectors I (7) power-off, the lateral nozzle opening (39) in left side and Left-side center nozzle opening (40) are closed, during coil connectors II (8) energising, the lateral nozzle opening in right side (41) on the atomizer of right side and right center nozzle opening (42) oil spout, after coil connectors II (8) power-off, the lateral nozzle opening (41) in right side and right center nozzle opening (42) are closed, by control coil joint I (7), coil connectors II (8) alternate energisation, power-off, two atomizers in left and right can be realized and replace oil spout, realize the change in twice spraying space.
Time actually used, fuel injector is fixed on engine body by pressing plate, fuel feed pump is by fuel inlet fitting connection oil-in (17), oil return bolt I (1), oil return bolt II (2) are connected with oil return pipe, and coil connectors I (7), coil connectors II (8) are connected with the electrical connector of control unit of engine.
During electromotor work, savings hydraulic oil in fuel feed pump, the push rod that hydraulic oil enters fuel injector by fuel feed pump and oil-in (17) and oil duct (29) controls chamber I (25), push rod controls chamber II (26), needle-valve pressure chamber I (35), push rod pressure chamber II (36).
At coil connectors I (7), under the equal no power state of coil connectors II (8), armature I (13) is under return spring I (11) pretightning force effect, ball valve I (19) blocks release throttle orifice I (21), armature II (14) is under return spring II (12) pretightning force effect, ball valve II (20) blocks release throttle orifice II (22), the hydraulic oil pressure that push rod controls in chamber I (25) and needle-valve pressure chamber I (35) is equal, the hydraulic oil pressure that push rod controls in chamber II (26) and needle-valve pressure chamber II (36) is equal, needle-valve I (33) blocks left side nozzle opening under return spring III (31) elastic force effect, needle-valve II (34) blocks right side nozzle opening under return spring IV (32) elastic force effect, now fuel injector is closed.
nullCoil connectors I (7) energising and coil connectors II (8) are when being not powered on，The magnetic force that coil I (9) produces overcomes the pretightning force of return spring I (11)，Armature I (13) is made to move upward，Ball valve I (19) opens release throttle orifice I (21)，The hydraulic oil overflowed by release throttle orifice I (21) is through spill port I (15)、Back oil road I (3) flows to oil return pipe，Pressure in now push rod controls chamber I (25) is less than the pressure of needle-valve pressure chamber I (35)，Under pressure differential effect，Needle-valve I (33) overcomes the elastic force of return spring III (31) to move upward，The now lateral nozzle opening (39) in left side、Left-side center nozzle opening (40) is opened，Hydraulic oil in needle-valve pressure chamber I (35) by the gap between inner chamber on the left of needle-valve I (33) and needle-valve body (37) from left side lateral nozzle opening (39)、Left-side center nozzle opening (40) sprays in cylinder，Now fuel injector is in left side atomizer duty.
If now coil connectors I (7) power-off, armature I (13) is return under return spring I (11) acts on, ball valve I (19) compresses release throttle orifice I (21), pressure that push rod controls in chamber I (25) is made to reach unanimity with the pressure of needle-valve pressure chamber I (35), needle-valve I (33) is return under the elastic force effect of return spring III (31), and the lateral nozzle opening in left side (39), Left-side center nozzle opening (40) are closed.
nullCoil connectors II (8) energising and coil connectors I (7) are when being not powered on，The magnetic force that coil II (10) produces overcomes the pretightning force of return spring II (12)，Armature II (14) is made to move upward，Ball valve II (20) opens release throttle orifice II (22)，The hydraulic oil overflowed by release throttle orifice II (22) flows to oil return pipe through spill port II (16) and back oil road II (4)，Pressure in now push rod controls chamber II (26) is less than the pressure of needle-valve pressure chamber II (36)，Under pressure differential effect，Needle-valve II (34) overcomes the elastic force of return spring IV (32) to move upward，The now lateral nozzle opening (41) in right side、Right center nozzle opening (42) is opened，Hydraulic oil in needle-valve pressure chamber II (36) by the gap between inner chamber on the right side of needle-valve II (34) and needle-valve body (37) from right side lateral nozzle opening (41)、Right center nozzle opening (42) sprays in cylinder，Now fuel injector is in right side atomizer duty.
If now coil connectors II (8) power-off, armature II (14) is return under return spring II (12) elastic force effect, ball valve II (20) compresses release throttle orifice II (22), pressure that push rod controls in chamber II (26) is made to reach unanimity with the pressure of needle-valve pressure chamber II (36), needle-valve II (34) is return under the elastic force effect of return spring IV (32), and the lateral nozzle opening in right side (41), right center nozzle opening (42) are closed.
Therefore, by switching on and off coil connectors I (7) and coil connectors II (8), it is possible to about control, two nozzles replace oil spout, it is achieved the change in twice spraying space.
Claims (6)
- null1. the double atomizer fuel injector of diesel engine，Can independently control two atomizer oil spouts，Realize the change in twice oil spout region in secondary injection，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-in (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 throttle orifice I (23)、Oil-filled throttle orifice II (24)、Push rod controls chamber I (25)、Push rod controls 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 (39) in left side、Left-side center nozzle opening (40)、The lateral nozzle opening (41) in right side、Right center nozzle opening (42) forms，It is characterized in that，Armature control volume (18) is internal arranges two armature control inner chambers，Two armature control to be respectively equipped with armature I (13) in inner chamber、Armature II (14)，Left side armature controls to be provided with release throttle orifice I (21) connection bottom push rod below inner chamber and controls chamber I (25)，Right side armature controls to be provided with release throttle orifice II (22) connection bottom push rod below inner chamber and controls chamber II (26)，Corresponding two armature in armature control volume (18) top control inner chamber and connect lock nut I (5) respectively、Lock nut II (6)，In described lock nut I (5), return spring I (11) is set、Coil I (9)，Lock nut I (5) peripheral hardware puts back into oil draining bolt I (1)、Coil connectors I (7)，Back oil road I (3) is had in oil return bolt I (1)；Return spring II (12), coil II (10) are set in described lock nut II (6), lock nut II (6) peripheral hardware puts back into oil draining bolt II (2), coil connectors II (8), has back oil road II (4) in oil return bolt II (2)；Armature control volume (18) lower section is threaded connection push rod body (30), described push rod body (30) is internal arranges two push rod inner chambers, two push rod inner chambers are equipped with push rod and return spring, in the push rod inner chamber of left side, return spring III (31) is enclosed within push rod I (27) bottom, push rod I (27) top is that push rod controls chamber I (25), in the push rod inner chamber of right side, return spring IV (32) is enclosed within push rod II (28) bottom, and push rod II (28) top is that push rod controls chamber II (26)；Needle-valve body (37) is connected by swivel nut (38) below push rod body 18, needle-valve body (37) arranges two atomizers in left and right, it is respectively provided with nozzle opening on the atomizer of left and right, two corresponding two needle-valve inner chambers of atomizer, left side needle-valve inner chamber is provided with needle-valve I (33) and needle-valve pressure chamber I (35), right side needle-valve inner chamber is provided with needle-valve II (34) and needle-valve pressure chamber II (36)；Oil duct (29) and oil-in (17) are set in the middle of two push rod inner chambers, oil duct (29) top connection push rod controls chamber I (25) and push rod controls chamber II (26), oil duct (29) bottom connection needle-valve pressure chamber I (35) and needle-valve pressure chamber II (36), oil-in (17) connection oil duct (29) and fuel inlet fitting；Left side atomizer arranges 4 φ 0.15mm nozzle openings, wherein three the lateral nozzle opening in left sides (39), nozzle opening cone angle 120 °, a Left-side center nozzle opening (40)；Right side atomizer arranges 4 φ 0.15mm nozzle openings, wherein three the lateral nozzle opening in right sides (41), nozzle opening cone angle 120 °, a right center nozzle opening (42)；During coil connectors I (7) energising, the lateral nozzle opening in left side (39) on the atomizer of left side and Left-side center nozzle opening (40) oil spout, after coil connectors I (7) power-off, the lateral nozzle opening (39) in left side and Left-side center nozzle opening (40) are closed, during coil connectors II (8) energising, the lateral nozzle opening in right side (41) on the atomizer of right side and right center nozzle opening (42) oil spout, after coil connectors II (8) power-off, the lateral nozzle opening (41) in right side and right center nozzle opening (42) are closed, by control coil joint I (7), coil connectors II (8) alternate energisation, power-off, two atomizers in left and right can be realized and replace oil spout, realize the change in twice spraying space.
- The double atomizer fuel injector of diesel engine the most according to claim 1, it is characterized in that, described oil duct (29) top connection oil-in (17) and push rod control chamber I (25), push rod controls chamber II (26), oil duct (29) lower section connection needle-valve pressure chamber I (35) and needle-valve pressure chamber II (36).
- The double atomizer fuel injector of diesel engine the most according to claim 1, it is characterized in that, described armature control volume (18) is internal is provided with two armature control inner chambers, left side armature controls to be provided with armature I (13) in inner chamber, right side armature controls to be provided with in inner chamber armature II (14), and corresponding two armature in armature control volume (18) top control inner chamber and connect lock nut I (5), lock nut II (6) respectively.
- The double atomizer fuel injector of diesel engine the most according to claim 1, it is characterized in that, described push rod body (30) is internal is provided with two push rod inner chambers, in the push rod inner chamber of left side, return spring III (31) is enclosed within push rod I (27) bottom, push rod I (27) top is that push rod controls chamber I (25), in the push rod inner chamber of right side, return spring IV (32) is enclosed within push rod II (28) bottom, and push rod II (28) top is that push rod controls chamber II (26).
- The double atomizer fuel injector of diesel engine the most according to claim 1, it is characterized in that, described needle-valve body (37) arranges two atomizers in left and right, it is respectively provided with nozzle opening on the atomizer of left and right, two corresponding two needle-valve inner chambers of atomizer, left side needle-valve inner chamber is provided with needle-valve I (33) and needle-valve pressure chamber I (35), right side needle-valve inner chamber is provided with needle-valve II (34) and needle-valve pressure chamber II (36).
- The double atomizer fuel injector of diesel engine the most according to claim 1, it is characterized in that, being respectively provided with nozzle opening on two atomizers in described needle-valve body (37) left and right, the oil spout hole count on the atomizer of two, left and right can be set to 1-8 varying number asymmetric distribution according to practical situation or equal number is symmetrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620030221.8U CN205478036U (en) | 2016-01-13 | 2016-01-13 | Two fuel sprayer sprayers of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620030221.8U CN205478036U (en) | 2016-01-13 | 2016-01-13 | Two fuel sprayer sprayers of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205478036U true CN205478036U (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620030221.8U Withdrawn - After Issue CN205478036U (en) | 2016-01-13 | 2016-01-13 | Two fuel sprayer sprayers of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205478036U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464865A (en) * | 2016-01-13 | 2016-04-06 | 吉林大学 | Diesel fuel injector with double fuel injection nozzles |
| 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 |
-
2016
- 2016-01-13 CN CN201620030221.8U patent/CN205478036U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464865A (en) * | 2016-01-13 | 2016-04-06 | 吉林大学 | Diesel fuel injector with double fuel injection nozzles |
| CN105464865B (en) * | 2016-01-13 | 2017-11-07 | 吉林大学 | A kind of double atomizer fuel injectors of diesel engine |
| 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 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160817 Effective date of abandoning: 20171107 |
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| AV01 | Patent right actively abandoned |