CN114215672B - Integrated coaxially arranged air auxiliary injection system structure - Google Patents
Integrated coaxially arranged air auxiliary injection system structure Download PDFInfo
- Publication number
- CN114215672B CN114215672B CN202111542290.9A CN202111542290A CN114215672B CN 114215672 B CN114215672 B CN 114215672B CN 202111542290 A CN202111542290 A CN 202111542290A CN 114215672 B CN114215672 B CN 114215672B
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- hole
- nozzle
- air
- fuel
- oil
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- 238000002347 injection Methods 0.000 title claims abstract description 64
- 239000007924 injection Substances 0.000 title claims abstract description 64
- 239000000446 fuel Substances 0.000 claims abstract description 119
- 238000005507 spraying Methods 0.000 claims abstract description 12
- 239000003921 oil Substances 0.000 claims description 54
- 238000007789 sealing Methods 0.000 claims description 30
- 239000000295 fuel oil Substances 0.000 claims description 7
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000000889 atomisation Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 239000007921 spray Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 7
- 239000010935 stainless steel Substances 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000010959 steel Substances 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
- F02M67/00—Apparatus in which fuel-injection is effected by means of high-pressure gas, the gas carrying the fuel into working cylinders of the engine, e.g. air-injection type
- F02M67/02—Apparatus in which fuel-injection is effected by means of high-pressure gas, the gas carrying the fuel into working cylinders of the engine, e.g. air-injection type the gas being compressed air, e.g. compressed in pumps
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
-
- 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
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
-
- 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
- F02M61/1886—Details of valve seats not covered by groups F02M61/1866 - F02M61/188
-
- 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
- F02M67/00—Apparatus in which fuel-injection is effected by means of high-pressure gas, the gas carrying the fuel into working cylinders of the engine, e.g. air-injection type
- F02M67/10—Injectors peculiar thereto, e.g. valve less type
- F02M67/12—Injectors peculiar thereto, e.g. valve less type having valves
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/90—Selection of particular materials
- F02M2200/9053—Metals
- F02M2200/9069—Non-magnetic metals
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/90—Selection of particular materials
- F02M2200/9053—Metals
- F02M2200/9076—Non-ferrous metals
-
- 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)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention provides an integrated coaxial air-assisted injection system structure, which comprises four oil injectors, a connecting block and a plurality of air-assisted injection systems, wherein the upper end of each oil injector is connected with a fuel distributor; the fuel injector is arranged on the fuel injector fixing plate through the supporting ring, and the fuel distributor is fixedly arranged on the fuel injector fixing plate; the oil sprayer fixing plate is fixed on the connecting block; the air auxiliary spraying nozzle is arranged on the nozzle fixing plate, and the nozzle fixing plate is fixedly arranged on the connecting block; the air auxiliary injection nozzle is coaxially connected with the oil sprayer through a connecting hole in the connecting block and a connector in the connecting hole. The invention greatly reduces the fuel pressure required by fuel injection and can realize the atomization effect realized by the original direct injection system in the cylinder; the fuel injector and the air auxiliary nozzle are vertically arranged, so that the vertical length is reduced, the system structure is compact, and the fuel injector and the air auxiliary nozzle are convenient to arrange.
Description
Technical Field
The invention belongs to the technical field of piston type internal combustion engine accessories, and particularly relates to an integrated coaxially arranged air auxiliary injection system structure.
Background
The working efficiency of the piston type internal combustion engine mainly depends on the combustion efficiency, which is closely related to the atomization quality of the fuel, and under the same condition, the better the fuel atomization quality is, the higher the combustion efficiency is, and the higher the working efficiency of the engine is. The air auxiliary injection system is a novel fuel injection system, and can realize good atomization effect similar to that of a high-pressure common rail system under lower oil pressure. However, because the air auxiliary injection system has the fuel injector and the air nozzle, and the traditional fuel injection system has only one fuel injector and the engine cylinder body which are connected, the corresponding device is required to be designed to integrate and modularize the air auxiliary injection system, so that the air auxiliary injection system is convenient to connect with the engine.
Disclosure of Invention
The invention relates to an integrated coaxial air auxiliary injection system structure, which is based on the existing direct injection fuel oil in a gasoline engine cylinder and an oil injector, and designs a related structure for fixing and connecting the oil injector 2 and an air auxiliary injection nozzle together so that the air auxiliary injection system can work normally.
The integrated coaxial air auxiliary injection system structure comprises four oil injectors, wherein the upper end of each oil injector is connected with a fuel oil distributor, the integrated coaxial air auxiliary injection system structure further comprises a connecting block, and the lower end of each oil injector is connected to a connecting hole in the connecting block;
the fuel injector is arranged on the fuel injector fixing plate through the supporting ring, and the fuel distributor is fixedly arranged on the fuel injector fixing plate;
the oil sprayer fixing plate is fixed on the connecting block;
the air auxiliary spraying nozzle is arranged on the nozzle fixing plate, and the nozzle fixing plate is fixedly arranged on the connecting block;
the air auxiliary injection nozzle is coaxially connected with the oil sprayer through a connecting hole in the connecting block and a connector in the connecting hole.
An air inlet through hole is longitudinally formed in the connecting block, an opening of the air inlet through hole is positioned at one end of the connecting block, and a high-pressure air channel is externally connected;
four connecting holes are also formed in the connecting block; the four connecting holes are communicated with the air inlet through hole;
the connecting holes comprise an oil sprayer positioning hole, an oil sprayer sealing hole and a nozzle sealing hole; the oil sprayer positioning hole, the oil sprayer sealing hole and the nozzle sealing hole are sequentially connected from top to bottom;
the connector is arranged in the nozzle sealing hole;
the oil sprayer locating hole and the oil sprayer sealing hole are connected with the oil sprayer;
the nozzle seal bore is sealed with an air-assisted spray nozzle connection by a seal ring.
The connector comprises a cylindrical lower part and a cylindrical upper part provided with four ventilation grooves, three holes are formed in the connector, the three holes are respectively a fuel injector mounting hole, a guide hole with a conical chamfer angle and a nozzle mounting hole from top to bottom, the head of the fuel injector is placed in the fuel injector mounting hole after a gasket is added, the tail of the air auxiliary injection nozzle is protruded and placed in the nozzle mounting hole, and the fuel injector, the air auxiliary injection nozzle and the connector are coaxially arranged.
The invention has the following technical effects:
(1) The invention is based on the existing engine standard fittings, and is convenient to use, install and maintain.
(2) On the basis of the original high-pressure direct injection system, the invention adds the related components of the air auxiliary injection system, greatly reduces the fuel pressure required by fuel injection (the fuel supply pressure is reduced to 20bar from 200bar of the direct injection system in the cylinder), and can realize the atomization effect realized by the original direct injection system in the cylinder.
(3) The main part of the invention adopts aluminum, and compared with steel fittings, the weight of the system can be greatly reduced.
(4) The invention simplifies unnecessary accessories, only maintains necessary connecting and fixing parts, and ensures that the system has compact structure and is convenient to arrange.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a front view of a fuel dispenser of the present invention;
FIG. 3 is a schematic rear view of a fuel dispenser of the present invention;
FIG. 4 is a schematic diagram of a fuel injector according to the present invention;
FIG. 5 is a schematic view of the structure of the support ring of the present invention;
FIG. 6 is a schematic view of a support ring mounting structure of the present invention;
FIG. 7 is a schematic diagram of an air assist jet nozzle according to the present invention;
FIG. 8 is a schematic view of a fuel injector mounting plate structure of the present invention;
FIG. 9 is a schematic view of an air assisted spray nozzle mounting plate structure of the present invention;
FIG. 10a is a schematic view of the external structure of the connector according to the present invention;
FIG. 10b is a schematic cross-sectional view of a connector of the present invention;
FIG. 11 is a schematic view of the structure of the connecting block according to the present invention
FIG. 12 is a schematic illustration of the cross-sectional elevation of the connecting block of the present invention;
FIG. 13 is a schematic side cross-sectional view of a connection block of the present invention;
FIG. 14 is a schematic view of the connection block arrangement of the present invention;
fig. 15 is a schematic view of an external connection structure according to the present invention.
Detailed Description
The specific technical scheme of the invention is described by combining the embodiments.
The embodiment is based on the existing mass EA888 engine in-cylinder direct injection system to modify an air auxiliary injection system, wherein the fuel distributor 1 and the fuel injector 2 use original parts of the EA888 engine, so that the maintenance and the installation are convenient. The air auxiliary injection nozzle 7 can be used for inputting compressed air and quantitative fuel oil, so that a good atomization effect is realized.
On the basis of the existing fuel dispenser 1, the fuel injector 2 and the air auxiliary injection nozzle 7, the invention connects independent accessories into the integral connecting block 6 and other auxiliary connecting pieces, and can integrate and uniformly input four sets of air auxiliary injection systems and independently control the four sets of air auxiliary injection systems.
The whole system is arranged in a mode shown in figure 1 and can be divided into an oil injection module, a connecting module, an air injection module and a fixing module according to main functions, wherein the oil injection module comprises a fuel oil distributor 1, a support ring 3 and an oil injector 2 and is responsible for matching with a high-pressure oil pump, maintaining the oil pressure of the system and completing the oil injection operation; the connecting module comprises a connecting block 6, a connector 8 and a gasket, and is responsible for connecting the fuel injector 2 and the air auxiliary injection nozzle 7, so that fuel sprayed by the fuel injector 2 is ensured to completely enter the air auxiliary injection nozzle 7, and fuel leakage is prevented, and fuel injection quantity deviation is caused; the air injection module mainly comprises an air auxiliary injection nozzle 7 which is responsible for mixing fuel oil and high-pressure gas and then injecting and realizing atomization; the fixing module comprises an oil sprayer fixing plate 5, a nozzle fixing plate 9 and bolts, and is responsible for fixing all parts of the system together, improving stability, guaranteeing sealing performance and preventing compressed gas and fuel oil from leaking.
The individual components of the present invention will be described in detail below.
(1) Fuel dispenser 1
The fuel distributor 1 used in the invention is the same as the existing engine model EA888, the external shape of which is shown in figures 2 and 3, the main body of the fuel distributor is a closed cavity formed by sealing two ends of a stainless steel pipe, and an oil inlet hole 11, a pressure sensor hole 12 and an oil delivery hole 13 of an oil injector are arranged on the fuel distributor. The metal plates used for fixing are welded on two sides of the main body, and holes are formed in the plates so that bolts can pass through and are fixed. Pressurized fuel from a high-pressure fuel pump enters the fuel dispenser 1 through the fuel inlet hole 11, so that stable high pressure is maintained in the fuel dispenser 1, a pressure sensor is arranged in the pressure sensor hole 12, the fuel in the fuel dispenser 1 is transmitted to an engine controller when being compacted, the high-pressure fuel pump is matched to adjust the oil pressure in the fuel dispenser 1, and the fuel dispenser 1 supplies high-pressure fuel to the fuel injector 2 through the fuel injector oil delivery hole 13 for fuel injection.
(2) Fuel injector 2
The fuel injector 2 used in the invention is the same as the existing engine model EA888, the outline of the fuel injector is shown in fig. 4, the main body is in a stepped shaft shape, a plug for supplying power to the fuel injector 2 is arranged on one side of the main body, an upper sealing ring 21 for being in sealing connection with the fuel distributor 1 is arranged on the upper side of the main body, and a lower sealing ring 22 for being in sealing connection with the connecting block 6 is arranged on the lower side of the main body. The fuel injector 2 is responsible for supplying high-pressure fuel in the fuel dispenser 1 to the air auxiliary injection nozzle 7 at regular time and quantity under the action of the controller.
(3) Support ring 3
The appearance of the supporting ring 3 in the invention is shown in fig. 5, and the supporting ring comprises an opening ring 32, wherein supporting rods 31 which are tilted upwards are respectively connected above the two open ends of the opening ring 32; the supporting ring 3 is a positioning element which is formed by bending a metal plate and is used for limiting the relative positions of the fuel dispenser 1 and the fuel injector 2, the arrangement position is shown in fig. 6, the lower side of the opening ring 32 is contacted with a boss of the fuel injector 2, the supporting rod 31 is contacted with a plane protrusion outside the fuel injector oil delivery hole 13 on the fuel dispenser 1, and the relative positions of the two are ensured to be fixed.
(4) Air-assisted spray nozzle 7
The air auxiliary injection nozzle 7 is internally provided with a nozzle coil, the front end of the air auxiliary injection nozzle is provided with a spray hole 71, the middle of the air auxiliary injection nozzle is provided with a wire outlet hole 73, the rear end of the air auxiliary injection nozzle is provided with an oil inlet hole 72 and an air inlet hole 74, and the rear end of the air auxiliary injection nozzle is also provided with a sealing ring 75; wherein the oil inlet hole 72 and the air inlet hole 74 are communicated with the connecting holes on the connecting block 6, so that the fuel and the compressed gas are ensured to enter the air auxiliary injection nozzle 7; the wire outlet hole 73 is used for connecting the nozzle coil with the controller to realize the opening and closing of the nozzle; the sealing ring 75 is used for sealing the air-assisted spray nozzle 7 and the connection block 6.
(5) Injector fixing plate 5
In the invention, the appearance of the oil sprayer fixing plate 5 is shown in fig. 8, the main body of the oil sprayer fixing plate is a metal plate, stainless steel is selected for ensuring strength, four bolt through holes for fixing the relative positions of the oil sprayer fixing plate 5 and the fuel dispenser 1 are formed in the stainless steel, and three thread through holes for fixing the relative positions of the oil sprayer fixing plate 5 and the connecting block 6 are formed in the stainless steel.
(6) Nozzle fixing plate 9
In the invention, the shape of the nozzle fixing plate 9 is shown in fig. 9, the main body of the nozzle fixing plate is a metal plate, stainless steel is selected for ensuring strength, four through holes for fixing the air auxiliary spraying nozzles 7 are formed in the stainless steel, and three through holes for fixing the relative positions of the nozzle fixing plate 9 and the connecting block 6 are formed in the stainless steel.
(7) Connector 8
The external shape and the sectional view of the connector 8 in the invention are shown in fig. 10, and the connector has the function of guiding the fuel sprayed from the fuel sprayer 2 to completely enter the air auxiliary spray nozzle 7 so as to prevent the fuel spraying amount error caused by the overflow of the fuel. The outside of the connector 8 can be divided into a cylindrical lower part and a cylindrical upper part provided with four ventilation grooves 84, three holes are formed in the connector 8, namely a fuel injector mounting hole 81, a flow guide hole 82 with a conical chamfer and a nozzle mounting hole 83 from top to bottom, the head of the fuel injector 2 is added with a gasket and then is placed in the fuel injector mounting hole 81, the tail of the air auxiliary injection nozzle 7 is protruded and then is placed in the nozzle mounting hole 83, and the fuel injector 2, the air auxiliary injection nozzle 7 and the connector 8 are coaxially arranged.
(8) Connecting block 6
The connecting block 6 is designed as a core structure of the invention, the shape of the connecting block is shown in fig. 11, and the connecting block is an aluminum strip structure, and various functional holes are formed in the connecting block. As shown in fig. 12, the front sectional view of the connection block 6 is shown, and all the functional holes formed in the connection block 6 are located on the symmetry plane, so that the internal structure of the connection block 6 can be completely seen in the front sectional view. All hole sites of the connecting block 6 can be divided into threaded holes, air inlet through holes 64 and connecting holes according to functions, and the threaded holes are positioned on the upper surface and the lower surface of the connecting block 6 and are used for fastening and connecting fixing bolts; the air inlet through hole 64 transversely penetrates through the whole connecting block 6, compressed air is input from one end, and the compressed air is supplied to four connecting holes for use; the connecting holes comprise four groups, each group corresponds to a fuel injector positioning hole 61, a fuel injector sealing hole 62 and a nozzle sealing hole 63, and each group of connecting holes is used for one fuel injector 2 and the matched air auxiliary injection nozzle 7. The cross-sectional side view of the connection block 6 is shown in fig. 13, and it can be seen that all functional holes are located on the front symmetry plane. Fig. 14 is a layout diagram of the connection block 6 after assembly, in which it can be seen that after the fuel injector 2 is inserted into the fuel injector positioning hole 61, the upper surface of the connection block 6 contacts with the annular boss of the fuel injector 2 to limit the further movement of the fuel injector 2, and at the same time, the sealing ring at the front end of the fuel injector 2 is inserted into the fuel injector sealing hole 62 in the connection block 6 to seal with the annular surface of the hole wall surface, so as to prevent high pressure oil and gas from leaking from the upper side. The front end of the fuel injector 2 stretches into the fuel injector positioning hole 61 and forms surface seal with the connector 8 positioned in the nozzle sealing hole 63 through a gasket, the lower part of the connector 8 is contacted and positioned with the tail part of the air auxiliary injection nozzle 7, and the sealing ring 75 at the tail part of the air auxiliary injection nozzle 7 seals the air auxiliary injection nozzle 7 and the nozzle sealing hole 63 to prevent high-pressure oil and gas from leaking. The lower surface of the connecting block 6 is positioned in contact with the annulus of the air-assisted spray nozzle 7.
The assembly process comprises the following steps:
(1) On the basis of the fuel dispenser 1, a fuel injector fixing plate 5, a fuel injector 2 fixing bolt and a nut are installed.
(2) After the support ring 3 is placed on the fuel injector 2, the tail of the fuel injector 2 is placed in the fuel injector delivery hole 13 of the fuel dispenser 1, so that the support ring 3 is in contact with the fuel dispenser 1.
(3) After the fuel injector 2 and the support ring 3 are sequentially installed, the connecting block 6 is installed in place in the correct direction, so that the positioning ring surface of the fuel injector 2 is contacted with the connecting block 6, and then the fixing bolt is screwed in.
(4) The gasket is placed in the connector 8 and oriented into the nozzle seal hole 63 in the lower portion of the connection block 6 to ensure that the head of the injector 2 enters the predetermined position of the connector 8.
(5) The air-assisted spray nozzle 7 is placed in the nozzle seal hole 63 in the lower part of the connection block 6, ensuring that the nozzle tail enters the connector 8 at a predetermined position, and the nozzle positioning annulus is in contact with the lower surface of the connection block 6.
(6) After all the air auxiliary spray nozzles 7 are mounted, a nozzle fixing plate 9 and fixing bolts are mounted.
(7) After the fixing bolts of the air auxiliary spraying nozzles 7 are installed, the whole system is assembled.
The working process of the system comprises the following steps:
the invention relates to an integrated coaxial air-assisted injection system structure, which does not contain an energy source and a control signal, so that high-pressure oil, high-pressure air and the control signal are required to be externally input. The system connection diagram is shown in fig. 15, and the system connection diagram is that a high-pressure air path is externally connected to an air inlet through hole 64 of the connecting block 6, a high-pressure air path is externally connected to an oil inlet hole 11 of the fuel dispenser 1, a fuel pressure sensor is externally connected to a pressure sensor hole 12 of the fuel dispenser 1, and a controller signal is externally connected to a joint of the fuel injector 2 and a wiring hole of the air auxiliary injection nozzle 7. After the external circuit works normally, the controller sends a signal to the fuel injector 2 to open the fuel injector, high-pressure fuel is sprayed out through the fuel injector 2 and sprayed into the connector 8 in the connecting block 6, after a certain time (fuel injection pulse width), the fuel injector 2 is closed, after a certain oil-gas interval time, the controller sends a signal to the air auxiliary spray nozzle 7 to open the fuel injector, high-pressure gas is wrapped with fuel to spray out from the air auxiliary spray nozzle 7, so that the fuel is atomized, after a certain time (fuel injection pulse width), the air auxiliary spray nozzle 7 is closed, and the spraying process is finished.
Claims (1)
1. The integrated coaxial air-assisted injection system structure is characterized by comprising four oil injectors (2), wherein the upper end of each oil injector (2) is connected with a fuel oil distributor (1), and the integrated coaxial air-assisted injection system structure is characterized by also comprising a connecting block (6), and the lower end of each oil injector (2) is connected to a connecting hole in the connecting block (6);
the fuel injector (2) is arranged on the fuel injector fixing plate (5) through the supporting ring (3), and the fuel distributor (1) is fixedly arranged on the fuel injector fixing plate (5);
the oil sprayer fixing plate (5) is fixed on the connecting block (6);
the air-assisted spraying device further comprises an air-assisted spraying nozzle (7), wherein the air-assisted spraying nozzle (7) is arranged on a nozzle fixing plate (9), and the nozzle fixing plate (9) is fixedly arranged on the connecting block (6);
the air auxiliary injection nozzle (7) is coaxially connected with the oil injector (2) through a connecting hole in the connecting block (6) and a connector (8) in the connecting hole;
an air inlet through hole (64) is longitudinally formed in the connecting block (6), an opening of the air inlet through hole (64) is positioned at one end of the connecting block (6), and a high-pressure air channel is externally connected;
four connecting holes are also formed in the connecting block (6); the four connecting holes are communicated with the air inlet through hole (64);
the connecting holes comprise an oil sprayer positioning hole (61), an oil sprayer sealing hole (62) and a nozzle sealing hole (63); the oil sprayer positioning hole (61), the oil sprayer sealing hole (62) and the nozzle sealing hole (63) are sequentially connected from top to bottom;
the connector (8) is mounted in the nozzle sealing bore (63);
the oil sprayer locating hole (61) and the oil sprayer sealing hole (62) are connected with the oil sprayer (2);
the nozzle sealing hole (63) is connected with the air auxiliary spraying nozzle (7) and is sealed by a sealing ring (75);
the connector (8) comprises a cylindrical lower part and a cylindrical upper part provided with four ventilation grooves (84), three holes are formed in the connector (8), an oil sprayer placing hole (81), a flow guiding hole (82) with a conical chamfer and a nozzle placing hole (83) are formed in the connector from top to bottom, the head of the oil sprayer (2) is placed in the oil sprayer placing hole (81) after a gasket is added, the tail of the air auxiliary spraying nozzle (7) is placed in the nozzle placing hole (83) in a protruding mode, and the oil sprayer (2), the air auxiliary spraying nozzle (7) and the connector (8) are coaxially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111542290.9A CN114215672B (en) | 2021-12-16 | 2021-12-16 | Integrated coaxially arranged air auxiliary injection system structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111542290.9A CN114215672B (en) | 2021-12-16 | 2021-12-16 | Integrated coaxially arranged air auxiliary injection system structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114215672A CN114215672A (en) | 2022-03-22 |
| CN114215672B true CN114215672B (en) | 2024-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111542290.9A Active CN114215672B (en) | 2021-12-16 | 2021-12-16 | Integrated coaxially arranged air auxiliary injection system structure |
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| Country | Link |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000161187A (en) * | 1998-11-27 | 2000-06-13 | Mitsubishi Motors Corp | Air assist type fuel injection device |
| CN108488018A (en) * | 2018-05-29 | 2018-09-04 | 重庆隆鑫发动机有限公司 | The Heavy End Aviation Fuel engine and aircraft of in-cylinder direct-jet |
| CN211448872U (en) * | 2020-01-09 | 2020-09-08 | 无锡雅佳德音科技有限公司 | Air-assisted fuel injection integrated control system |
| CN215141085U (en) * | 2021-03-30 | 2021-12-14 | 三一汽车制造有限公司 | Internal mixing type spray gun |
-
2021
- 2021-12-16 CN CN202111542290.9A patent/CN114215672B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000161187A (en) * | 1998-11-27 | 2000-06-13 | Mitsubishi Motors Corp | Air assist type fuel injection device |
| CN108488018A (en) * | 2018-05-29 | 2018-09-04 | 重庆隆鑫发动机有限公司 | The Heavy End Aviation Fuel engine and aircraft of in-cylinder direct-jet |
| CN211448872U (en) * | 2020-01-09 | 2020-09-08 | 无锡雅佳德音科技有限公司 | Air-assisted fuel injection integrated control system |
| CN215141085U (en) * | 2021-03-30 | 2021-12-14 | 三一汽车制造有限公司 | Internal mixing type spray gun |
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| CN114215672A (en) | 2022-03-22 |
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