CN107989716B - Device with variable injection direction of internal combustion gas in air inlet channel - Google Patents
Device with variable injection direction of internal combustion gas in air inlet channel Download PDFInfo
- Publication number
- CN107989716B CN107989716B CN201810000761.5A CN201810000761A CN107989716B CN 107989716 B CN107989716 B CN 107989716B CN 201810000761 A CN201810000761 A CN 201810000761A CN 107989716 B CN107989716 B CN 107989716B
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- Prior art keywords
- coil
- air hole
- air
- middle baffle
- shell
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- 238000002347 injection Methods 0.000 title claims abstract description 28
- 239000007924 injection Substances 0.000 title claims abstract description 28
- 239000000567 combustion gas Substances 0.000 title claims abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 22
- 238000004804 winding Methods 0.000 claims abstract description 6
- 239000000446 fuel Substances 0.000 abstract description 6
- 238000005507 spraying Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0278—Port fuel injectors for single or multipoint injection into the air intake system
-
- 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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0251—Details of actuators therefor
- F02M21/0254—Electric actuators, e.g. solenoid or piezoelectric
-
- 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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0257—Details of the valve closing elements, e.g. valve seats, stems or arrangement of flow passages
- F02M21/0272—Ball valves; Plate valves; Valves having deformable or flexible parts, e.g. membranes; Rotatable valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Jet Pumps And Other Pumps (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention belongs to the technical field of gas fuel engines, and relates to an internal combustion gas injection direction variable device of an air inlet channel. The device mainly comprises a front end of a shell, a rotary execution cover, an ejector rod, a movable coil, a limiting spring, a middle baffle, a large gear, a middle shaft, a bearing, a return spring, a coil sleeve, a fixed coil and a gear shaft; the front end of the shell is provided with a central air hole a, the rotary execution cover is provided with a central air hole b, and the central air hole is concentric with the central air hole a; two ends of the limiting spring are respectively propped against the rotary executing cover and the middle baffle plate; the ejector rod is clamped on the rotary executing cover and is fixedly connected with the movable coil; the movable coil is clamped in a coil sleeve which is fixedly connected with the intermediate shaft; two ends of the return spring are respectively propped against the ejector rod and the middle baffle plate; the fixed coil is fixedly connected with the intermediate shaft, and the winding direction of the movable coil is the same as that of the fixed coil; the invention can be fully suitable for air inlets with different shapes, has small volume, simple and convenient operation and high efficiency.
Description
Technical Field
The invention belongs to the technical field of gas fuel engines, and particularly relates to an internal combustion gas injection direction variable device of an air inlet channel.
Background
With the development of the automobile industry, environmental and energy problems have gradually emerged, and gas fuel engines reduce both NOx and PM emissions and reduce the consumption and dependence on petroleum fuels. For a gas fuel engine, in-cylinder flow and in-cylinder gas concentration distribution have very important influences on combustion, in general, the gas fuel engine adopts air inlet channel multipoint injection, but gas and air cannot be uniformly mixed, certain concentration gradient is necessarily formed in the cylinder, when the injection direction is changed, the gas concentration layering state in the cylinder is also changed, different injection directions firstly enable the gas to enter the cylinder, the time of entering the cylinder is different, the upper and lower layering of the concentration are influenced, secondly, the collision degree of the gas, the air inlet channel wall surface and the air inlet valve is also different due to the change of the injection direction, the uniformity of the mixed gas in the cylinder is influenced, and the factors have direct influences on the engine combustion and emission results. Therefore, the jet direction of the internal combustion gas in the air inlet channel can be changed to adapt to different working conditions, and the jet direction is adjusted to be suitable so as to achieve the optimal combustion and emission effects.
In the patent document of publication number CN103470405a (publication date 2013, 12, 25) a device with variable direction and number of spray holes for gas injection is disclosed, which mainly comprises a nozzle and a sealing bolt assembly, and the direction and number of spray holes are controlled by manually tightening different direction and number of bolt assemblies on the nozzle, so that electric control cannot be realized, and the operation is very inconvenient.
Disclosure of Invention
The invention aims to solve the technical problem of unchangeable gas injection direction in the prior art and provides a device for changing the gas injection direction in an air inlet channel.
The device mainly comprises a front end 1 of a shell, a rotary execution cover 2, a push rod 3, a movable coil 4, a limit spring 5, an intermediate baffle 6, a hybrid stepping motor 8, a rear end 9 of the shell, a large gear 11, an intermediate shaft 12, a bearing 13, a return spring 14, a coil sleeve 15, a fixed coil 16 and a gear shaft 20;
the front end 1 of the shell, the middle baffle 6 and the rear end 9 of the shell are connected through bolts;
the front end 1 of the shell is provided with a central air hole a101, the rotary execution cover 2 is provided with a central air hole b201, and the central air hole 201 is concentric with the central air hole a 101;
two ends of the limiting spring 5 are respectively propped against the rotary executing cover 2 and the middle baffle 6;
the ejector rod 3 is clamped on the rotary execution cover 2; the ejector rod 3 is fixedly connected with the movable coil 4;
the movable coil 4 is clamped in a slide way 1501 in a coil sleeve barrel 15, and the coil sleeve 15 is fixedly connected with an intermediate shaft 12;
the two ends of the return spring 14 are respectively propped against the ejector rod 3 and the middle baffle 6; the middle baffle 6 is sleeved outside the coil sleeve 15 through a bearing 13;
the fixed coil 16 is fixedly connected with the intermediate shaft 12, and the winding direction of the movable coil 4 is the same as that of the fixed coil 16;
the large gear 11 is connected with the intermediate shaft 12;
the gear shaft 20 is a power output shaft of the hybrid stepper motor 8, and the gear shaft 20 is meshed with the large gear 11 and penetrates through the middle baffle 6.
In the technical scheme, a first air hole 102, a second air hole 103, a third air hole 104 and a fourth air hole 105 are uniformly distributed around the front end 1 of the shell;
the rotary executing cover 2 is provided with an air hole e202, the rotary executing cover 2 rotates along the axis for one circle, and the air hole e202 can be concentric with the first air hole 102, the second air hole 103, the third air hole 104 and the fourth air hole 105.
In the technical scheme, two shifting blocks 203 are arranged in the rotary execution cover 2, and clamping grooves 204 are formed in the rotary execution cover;
the ejector pin 3 is provided with two grooves 301,
the two grooves 301 of the ejector rod 3 are matched with the two shifting blocks 203 of the rotary execution cover 2 in position, and the shifting blocks 203 of the rotary execution cover 2 are clamped in the grooves 301 of the ejector rod 3;
the two ends of the limit spring 5 are propped against the clamping groove 204 and the middle baffle 6;
in the technical scheme, an inner groove 601, an inner end surface 602, a round hole 603 and an air passage 604 are arranged on the middle baffle 6;
the two ends of the return spring 14 are propped against the inner side 302 of the head part of the ejector rod 3 and the inner groove 601 of the middle baffle 6;
the small head 2002 of the gear shaft 20 passes through the round hole 603 of the middle baffle 6, and the small head 2002 is in clearance fit with the round hole 603.
In the technical scheme, the coil sleeve 15 is provided with two slide ways 1501, a rear end face 1502 and a boss 1503, and air flow channels 1504 are arranged at two sides of the coil sleeve 15 to reduce the resistance of the air in the device and ensure the flow;
the movable coil 4 is provided with a sliding block 401;
the sliding block 401 of the movable coil 4 is matched with the slide 1501 of the coil sleeve 15 in position, and the sliding block 401 is clamped in the slide 1501.
In the technical scheme, the middle baffle 6 and the bearing 13 are in interference fit, and the coil sleeve 15 and the bearing 13 are respectively propped against the inner end surface 602 of the middle baffle 6 and the boss 1503 of the coil sleeve 15.
In the technical scheme, the intermediate shaft 12 is provided with a front end face 1201 and an inner end face b1202, the shaft diameter is provided with a key groove 1203, and the intermediate shaft is connected with the large gear 11 through a key 7;
the rear end face 1502 of the coil sleeve 15 is fixedly connected with the front end face 1201 of the intermediate shaft 12; the stationary coil 16 is fixedly connected to the inner end surface b1202 of the intermediate shaft 12.
In the technical scheme, a pinion 2001 is arranged on the gear shaft 20; the pinion 2001 meshes with the large gear 11; the ratio of the number of teeth of the pinion 2001 to the large gear 11 is 1:4.
In the technical scheme, the device for changing the injection direction of the gas in the gas inlet channel further comprises a locking nut 10, wherein the locking nut 10 is arranged on an intermediate shaft 12 and is positioned outside a large gear 11;
in the technical scheme, a wire harness channel 901 is arranged on the side surface of the rear end 9 of the shell, signal wires of the hybrid stepping motor 8, the movable coil 4 and the fixed coil 16 are led to the outside through the wire harness channel 901, and a vent hole 902 is arranged at the rear part of the rear end 9 of the shell and is a gas inlet hole, so that gas enters the device;
the technical scheme provided by the invention has the beneficial effects that:
1. different injection directions of fuel gas in the air inlet channel can be fully adapted to the air inlet channel with different shapes so as to achieve optimal air inlet flow, and meanwhile, different injection directions can enable the upper and lower concentration and dilution distribution of a concentration field in a cylinder to be changed so as to adapt to different working condition requirements.
2. Compared with other methods for changing the spraying direction, the invention completely adopts the electric control system, does not need to disassemble and adjust the spraying pipe, can directly control the ideal spraying direction outside, and has simple and convenient operation and high efficiency.
3. The electric control device for adjusting the spraying direction is completely integrated in the spray pipe, has small volume and flexibility, and provides possibility for productization.
Drawings
FIG. 1 is a longitudinal cross-sectional view of an intake port internal combustion gas injection direction variable device;
FIG. 2 is an enlarged view of a portion of an air inlet port internal combustion gas injection direction variable device;
fig. 3 is a schematic view of the front end 1 of the housing;
FIG. 4 is a schematic diagram of the combination of the rotary actuator housing 2 and the housing front end 1;
fig. 5 is a schematic diagram of the combination of the ejector rod 3 and the movable coil 4;
fig. 6 is a cross-sectional view of the intermediate baffle 6;
fig. 7 is a front view of the intermediate baffle 6;
fig. 8 is a schematic view of the coil sleeve 15;
FIG. 9 is a cross-sectional view taken along the direction A-A in FIG. 1;
FIG. 10 is an enlarged partial cross-sectional view taken along the direction A-A of FIG. 1;
fig. 11 is a schematic view of the position of the limit spring 5;
fig. 12 is a schematic view of the position of the return spring 14;
fig. 13 is a schematic view of the position of the bearing 13;
FIG. 14 is a schematic view of intermediate shaft 12;
fig. 15 is a schematic view of the gear shaft 20;
fig. 16 is a schematic view of a meshing section of the large gear 11 and the small gear 2001;
FIG. 17 is a schematic illustration of the intermediate shaft 12 in combination with surrounding parts;
fig. 18 is a schematic view of the rear end 9 of the housing;
1, the front end of a shell; 2. rotating the actuating cap; 3. a push rod; 4. a movable coil; 5, limiting springs; 6. an intermediate baffle; 7. a key; 8. a hybrid stepper motor; 9. the rear end of the shell; 10. a locking nut; 11. a large gear; 12. an intermediate shaft; 13. a bearing; 14. a return spring; 15. a coil sleeve; 16. fixing the coil; 17. a first bolt; 18. a gasket a; 19. a first nut; 20. a gear shaft; 21. a second nut; 22. a gasket b; 23. a second bolt;
101. a central air hole a; 102. a first air hole; 103. a second air hole; 104. a third air hole; 105. a fourth air hole;
201. a central air hole b; 202. an air hole e; 203. a shifting block; 204. an internal clamping groove;
401. a slide block;
601. an inner tank; 602. an inner end surface a;
901. a harness passage; 902. a vent hole;
1201. a front end face; 1202. an inner end surface b; 1203. a key slot;
1501. a slideway; 1502. a rear end face; 1503. a boss; 1504. an air flow channel;
2001. a pinion gear; 2002. small head.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1 and 2:
the invention comprises a front end 1 of a shell, a rotary executing cover 2, a push rod 3, a movable coil 4, a limit spring 5, a middle baffle 6, a key 7, a hybrid stepping motor 8, a rear end 9 of the shell, a locking nut 10, a large gear 11, a middle shaft 12, a bearing 13, a return spring 14, a coil sleeve 15, a fixed coil 16, a first bolt 17, a washer a18, a first nut 19, a gear shaft 20, a second nut 21, a washer b22 and a second bolt 23.
The front end 1 of the shell, the middle baffle 6 and the rear end 9 of the shell are connected through a first bolt 17 and a second bolt 23;
the central air hole 201 of the rotary execution cover 2 is concentric with the central air hole a101 of the front end 1 of the shell, and two ends of the limiting spring 5 are propped against the clamping groove 204 and the middle baffle 6 in the rotary execution cover 2;
the ejector rod 3 is welded with the movable coil 4, a groove 301 of the ejector rod 3 is clamped in a shifting block 203 in the rotary execution cover 2, and two ends of a return spring 14 are propped against the inner side 302 of the head part of the ejector rod 3 and an inner groove 601 of the middle baffle 6;
the movable coil 4 sliding block 401 is clamped in the inner slide 1501 in the coil sleeve 15, and the rear end face 1502 of the coil sleeve 15 is welded with the front end face 1201 of the intermediate shaft 12;
the middle baffle 6 is sleeved outside the coil sleeve 15 through a bearing 13, and is in interference fit, and two sides of the bearing respectively prop against the inner end surface 602 of the middle baffle 6 and the boss 1503 of the coil sleeve 15;
the fixed coil 16 is welded with the inner end surface 1202 of the intermediate shaft 12, and the winding direction of the movable coil 4 is the same as that of the fixed coil 16;
the large gear 11 and the intermediate shaft 12 are connected through a key 7, a small gear 2001 on the gear shaft 20 is meshed with the large gear 11, and a locking nut 10 is arranged on one side of the large gear 11 on the intermediate shaft 12;
the gear shaft 20 is a power output shaft of the hybrid stepping motor 8, and the small end 2002 of the gear shaft 20 passes through the round hole 603 of the middle baffle 6 and is in clearance fit with the round hole.
Referring to fig. 1 and 2:
the front end 1 of the shell, the middle baffle 6 and the rear end 9 of the shell are connected through a first bolt 17 and a second bolt 23, a gasket a18 and a gasket b22 are respectively arranged between the large end of the first bolt 17 and the large end of the second bolt 23 and the front end 1 of the shell, pass through the bolt hole of the middle baffle 6, and a first nut 19 and a second nut 21 are respectively arranged behind the rear end 9 of the shell;
referring to fig. 3:
the front end 1 of the shell is provided with a central air hole a101, and a first air hole 102, a second air hole 103, a third air hole 104 and a fourth air hole 105 are uniformly distributed around the front end;
referring to fig. 4:
the rotary executing cover 2 is provided with a central air hole b201 and is concentric with the central air hole 101 at the front end 1 of the shell, the radius is larger than that of the central air hole a101 at the front end 1 of the shell, the periphery of the rotary executing cover 2 is provided with an air hole e202, the rotary executing cover 2 rotates along the axis for one circle, and the air hole e202 can be concentric with the first air hole 102, the second air hole 103, the third air hole 104 and the fourth air hole 105, and the radius is slightly larger; two shifting blocks 203 and an inner clamping groove 204 are arranged inside;
referring to fig. 5:
according to the invention, the ejector rod 3 and the movable coil 4 are welded into a whole, the ejector rod 3 is provided with two grooves 301, and the movable coil 4 is provided with a sliding block 401;
referring to fig. 6 and 7:
the middle baffle 6 is provided with an inner groove 601, an inner end surface 602, a round hole 603 and an air passage 604;
referring to fig. 8:
the coil sleeve 15 is provided with two slide ways 1501, the boss 1503, and the two sides of the coil sleeve 15 are provided with air flow channels 1504 so as to reduce the resistance of the air in the device and ensure the flow;
referring to fig. 9 and 10:
according to the invention, the two grooves 301 of the ejector rod 3 are matched with the two shifting blocks 203 of the rotary execution cover 2 in position, and the shifting blocks 203 of the rotary execution cover 2 are clamped in the grooves 301 of the ejector rod 3; the movable coil 4 sliding block 401 is matched with the position of the inner slide 1501 in the coil sleeve 15, and the movable coil 4 sliding block 401 is clamped in the inner slide 1501 in the coil sleeve 15;
referring to fig. 11:
according to the invention, two ends of the limiting spring 5 are propped against the clamping groove 204 and the middle baffle 6 in the rotary execution cover 2;
referring to fig. 12:
according to the invention, two ends of the return spring 14 are propped against the inner side 302 of the head part of the ejector rod 3 and the inner groove 601 of the middle baffle 6;
referring to fig. 13:
the middle baffle 6 is sleeved outside the coil sleeve 15 through the bearing 13, and is in interference fit, and two sides of the bearing respectively prop against the inner end surface 602 of the middle baffle 6 and the boss 1503 of the coil sleeve 15;
referring to fig. 14:
in the invention, the front end face 1201 and the inner end face b1202 of the intermediate shaft 12 are provided with key grooves 1203 in the shaft diameter, and are connected with a large gear 11 through a key 7;
referring to fig. 15:
the gear shaft 20 is a power output shaft of the hybrid stepping motor 8, a small head 2002 of the gear shaft 20 penetrates through a round hole 603 of the middle baffle 6, and the small head 2002 is in clearance fit with the round hole 603;
referring to fig. 16:
the large gear 11 and the intermediate shaft 12 are connected through the key 7, and the small gear 2001 on the gear shaft 20 is meshed with the large gear 11;
referring to fig. 17:
the rear end face 1502 of the coil sleeve 15 is welded with the front end face 1201 of the intermediate shaft 12; the fixed coil 16 is welded with the inner end surface 1202 of the intermediate shaft 12, and the winding direction of the movable coil 4 is the same as that of the fixed coil 16; the locking nut 10 is arranged on the intermediate shaft 12 and positioned outside the large gear 11;
referring to fig. 18:
the invention has the advantages that the side surface of the rear end 9 of the shell is provided with a wire harness channel 901, the signal wires of the hybrid stepping motor 8, the movable coil 4 and the fixed coil 16 are led to the outside, the rear part is provided with a vent 902 which is a gas inlet hole, and gas enters the device;
working process
In the initial state, the ejector rod 3 is pushed against the central air hole b201 of the rotary execution cover 2 under the action of the return spring 14, the central air hole b201 is closed, the groove 301 of the ejector rod 3 is clamped on the shifting block 203 of the rotary execution cover 2, the air hole e202 of the rotary execution cover 2 is arranged at the position between the first air hole 102, the second air hole 103, the third air hole 104 and the fourth air hole 105 of the front end 1 of the shell, and the force of the limiting spring 5 enables the rotary execution cover 2 to be tightly attached to the front end 1 of the shell, so that the air holes around the rotary execution cover 2 are also in the closed state.
When the air injection direction is right in front of the nozzle, current is introduced into the movable coil 4 and the fixed coil 16, and as the winding directions of the movable coil 4 and the fixed coil are the same, different magnetic poles are generated on the opposite surfaces of the two coils due to electromagnetic induction phenomenon, so that the two coils are attracted to each other, the electromagnetic force is greater than the stretching force of the return spring 14, the fixed coil 16 is not moved, the movable coil 4 moves towards the fixed coil 16 along the slide 1501 on the inner wall of the coil sleeve 15, meanwhile, the ejector rod 3 is driven to separate from the rotary execution cover 2, the central air hole b201 of the rotary execution cover 2 is opened, and the rotary execution cover 2 is always limited by the acting force of the position spring 5 without offset. After the air injection work is finished, the power supply to the fixed coil 16 and the movable coil 4 is stopped, the coils generate inductance, the magnetic fields of the two coils cannot disappear immediately, but gradually weaken, and under the tensile force of the return spring, the ejector rod 3 drives the movable coil 4 to move towards the direction of the rotary execution cover 2 until the central air hole b201 of the rotary execution cover 2 is closed.
When the air injection direction is other directions around, in the initial state, the hybrid stepper motor 8 drives the gear shaft 20 to rotate, the pinion 2001 on the gear shaft 20 is meshed with the large gear 11, the intermediate shaft 12 is driven to rotate with the coil sleeve 15, the sliding block 401 of the movable coil 4 is driven by the sliding block 1501 in the coil sleeve 15, the movable coil 4 and the ejector rod 3 are driven to rotate, and the groove 301 on the ejector rod 3 drives the shifting block 203 on the rotary execution cover 2 to rotate, so that the rotary execution cover 2 rotates. The gear ratio of the pinion 2001 to the large gear 11 is 1:4, the hybrid stepper motor 8 drives the gear shaft 20 to rotate 180 degrees, the large gear 11, the intermediate shaft 12, the coil sleeve 15, the movable coil 4, the ejector rod 3 and the rotary execution cover 2 to rotate 45 degrees, the air hole e202 of the rotary execution cover 2 is concentric with the air hole 102 at the front end 1 of the shell, the motor rotates 360 degrees again, the rotary execution cover 2 rotates 90 degrees, the air hole e202 of the rotary execution cover 2 is concentric with the air hole 103 at the front end 1 of the shell, the air hole 103 is opened, and the like, the air hole 104 and the air hole 105 can be opened, different air injection directions are realized, when the air injection work is finished, the hybrid stepper motor 8 rotates 180 degrees for the last time, the rotary execution cover 2 rotates 45 degrees, the air hole e202 is closed, and the mechanism returns to an initial state.
Claims (6)
1. An air inlet channel internal combustion gas injection direction variable device is characterized in that: the device mainly comprises a shell front end (1), a rotary execution cover (2), an ejector rod (3), a movable coil (4), a limiting spring (5), an intermediate baffle (6), a hybrid stepping motor (8), a shell rear end (9), a large gear (11), an intermediate shaft (12), a bearing (13), a return spring (14), a coil sleeve (15), a fixed coil (16) and a gear shaft (20);
the front end (1) of the shell, the middle baffle (6) and the rear end (9) of the shell are connected through bolts;
the front end (1) of the shell is provided with a central air hole a (101), the rotary execution cover (2) is provided with a central air hole b (201), and the central air hole b (201) is concentric with the central air hole a (101);
two ends of the limiting spring (5) are respectively propped against the rotary executing cover (2) and the middle baffle (6);
the ejector rod (3) is clamped on the rotary execution cover (2); the ejector rod (3) is fixedly connected with the movable coil (4);
the movable coil (4) is clamped in a slide way (1501) in a coil sleeve (15), and the coil sleeve (15) is fixedly connected with the intermediate shaft (12);
two ends of the return spring (14) are respectively propped against the ejector rod (3) and the middle baffle plate (6); the middle baffle (6) is sleeved outside the coil sleeve (15) through a bearing (13);
the fixed coil (16) is fixedly connected with the intermediate shaft (12), and the winding direction of the movable coil (4) is the same as that of the fixed coil (16); the large gear (11) is connected with the intermediate shaft (12);
the gear shaft (20) is a power output shaft of the hybrid stepping motor (8), and the gear shaft (20) is meshed with the large gear (11) and penetrates through the middle baffle (6);
a first air hole (102), a second air hole (103), a third air hole (104) and a fourth air hole (105) are uniformly distributed around the front end (1) of the shell;
the rotary executing cover (2) is provided with an air hole e (202), the rotary executing cover (2) rotates along the axis for one circle, and the air hole e (202) can be concentric with the first air hole (102), the second air hole (103), the third air hole (104) and the fourth air hole (105);
two shifting blocks (203) are arranged in the rotary execution cover (2), and clamping grooves (204) are formed in the rotary execution cover;
the ejector rod (3) is provided with two grooves (301), the two grooves (301) of the ejector rod (3) are matched with the two shifting blocks (203) of the rotary execution cover (2) in position, and the shifting blocks (203) of the rotary execution cover (2) are clamped in the grooves (301) of the ejector rod (3);
two ends of the limiting spring (5) are propped against the clamping groove (204) and the middle baffle (6);
an inner groove (601), an inner end surface (602), a round hole (603) and an air passage (604) are arranged on the middle baffle plate (6);
two ends of the return spring (14) are propped against the inner side (302) of the head part of the ejector rod (3) and the inner groove (601) of the middle baffle plate (6);
a small head (2002) of the gear shaft (20) penetrates through a round hole (603) of the middle baffle plate (6), and the small head (2002) is in clearance fit with the round hole (603);
the coil sleeve (15) is provided with two slide ways (1501), a rear end face (1502) and a boss (1503), and air flow channels (1504) are arranged on two sides of the coil sleeve (15) so as to reduce the resistance of air in the device and ensure the flow;
the movable coil (4) is provided with a sliding block (401);
the sliding block (401) of the movable coil (4) is matched with the slide way (1501) of the coil sleeve (15), and the sliding block (401) is clamped in the slide way (1501).
2. An air-intake port internal combustion gas injection direction variable device according to claim 1, characterized in that:
the middle baffle plate (6) and the bearing (13), the coil sleeve (15) and the bearing (13) are in interference fit, and two sides of the bearing respectively support against the inner end face (602) of the middle baffle plate (6) and the boss (1503) of the coil sleeve (15).
3. An air-intake port internal combustion gas injection direction variable device according to claim 1, characterized in that:
the intermediate shaft (12) is provided with a front end surface (1201) and an inner end surface b (1202), the shaft diameter is provided with a key groove (1203), and the intermediate shaft is connected with the large gear (11) through a key (7);
the rear end face (1502) of the coil sleeve (15) is fixedly connected with the front end face (1201) of the intermediate shaft (12); the fixed coil (16) is fixedly connected with an inner end surface b (1202) of the intermediate shaft (12).
4. An air-intake port internal combustion gas injection direction variable device according to claim 1, characterized in that:
a pinion (2001) is arranged on the gear shaft (20); the pinion (2001) is meshed with the large gear (11); the ratio of the number of teeth of the small gear (2001) to the number of teeth of the big gear (11) is 1:4.
5. An air-intake port internal combustion gas injection direction variable device according to claim 1, characterized in that:
the device for changing the injection direction of the gas in the air inlet channel further comprises a locking nut (10), wherein the locking nut (10) is arranged on the intermediate shaft (12) and is positioned on the outer side of the large gear (11).
6. An air-intake port internal combustion gas injection direction variable device according to claim 1, characterized in that:
the mixed stepping motor is characterized in that a wiring harness channel (901) is arranged on the side face of the rear end (9) of the shell, signal wires of the mixed stepping motor (8), the movable coil (4) and the fixed coil (16) are led to the outside through the wiring harness channel (901), and an air vent (902) is arranged at the rear portion of the rear end (9) of the shell and is a gas inlet hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810000761.5A CN107989716B (en) | 2018-01-02 | 2018-01-02 | Device with variable injection direction of internal combustion gas in air inlet channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810000761.5A CN107989716B (en) | 2018-01-02 | 2018-01-02 | Device with variable injection direction of internal combustion gas in air inlet channel |
Publications (2)
| Publication Number | Publication Date |
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| CN107989716A CN107989716A (en) | 2018-05-04 |
| CN107989716B true CN107989716B (en) | 2023-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810000761.5A Active CN107989716B (en) | 2018-01-02 | 2018-01-02 | Device with variable injection direction of internal combustion gas in air inlet channel |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109296475A (en) * | 2018-11-05 | 2019-02-01 | 吉林大学 | Fuel gas injection position variset in a kind of air intake duct |
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| JP2000110689A (en) * | 1998-10-01 | 2000-04-18 | Nissan Diesel Motor Co Ltd | Fuel injection device |
| EP1524429A1 (en) * | 2003-10-14 | 2005-04-20 | Hitachi, Ltd. | Fuel injection method of internal combustion engine, fuel injection valve of the same, and internal combustion engine |
| DE102005015585B3 (en) * | 2005-04-05 | 2006-10-05 | Kaniut, Herbert, Dipl.-Ing. | Combination-supersonic-adjustment-nozzle for e.g. injector-centrifugal-turbines-engine, has nozzle stream bundling unit with small supersonic auxiliary nozzles to load initial-intake-injector to increase the intake effect of engines |
| WO2015053003A1 (en) * | 2013-10-11 | 2015-04-16 | 川崎重工業株式会社 | Fuel injection device for gas turbine |
| CN207686867U (en) * | 2018-01-02 | 2018-08-03 | 吉林大学 | Fuel gas injection direction-agile device in a kind of air intake duct |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090111063A1 (en) * | 2007-10-29 | 2009-04-30 | General Electric Company | Lean premixed, radial inflow, multi-annular staged nozzle, can-annular, dual-fuel combustor |
| US9995261B2 (en) * | 2015-04-17 | 2018-06-12 | Caterpillar Inc. | Dynamic seal for fuel injector needle check |
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2018
- 2018-01-02 CN CN201810000761.5A patent/CN107989716B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000110689A (en) * | 1998-10-01 | 2000-04-18 | Nissan Diesel Motor Co Ltd | Fuel injection device |
| EP1524429A1 (en) * | 2003-10-14 | 2005-04-20 | Hitachi, Ltd. | Fuel injection method of internal combustion engine, fuel injection valve of the same, and internal combustion engine |
| DE102005015585B3 (en) * | 2005-04-05 | 2006-10-05 | Kaniut, Herbert, Dipl.-Ing. | Combination-supersonic-adjustment-nozzle for e.g. injector-centrifugal-turbines-engine, has nozzle stream bundling unit with small supersonic auxiliary nozzles to load initial-intake-injector to increase the intake effect of engines |
| WO2015053003A1 (en) * | 2013-10-11 | 2015-04-16 | 川崎重工業株式会社 | Fuel injection device for gas turbine |
| CN207686867U (en) * | 2018-01-02 | 2018-08-03 | 吉林大学 | Fuel gas injection direction-agile device in a kind of air intake duct |
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| CN107989716A (en) | 2018-05-04 |
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