CN115288886A - Micro-spraying integrated double-electromagnetic control type ammonia fuel injector - Google Patents
Micro-spraying integrated double-electromagnetic control type ammonia fuel injector Download PDFInfo
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- CN115288886A CN115288886A CN202210793121.0A CN202210793121A CN115288886A CN 115288886 A CN115288886 A CN 115288886A CN 202210793121 A CN202210793121 A CN 202210793121A CN 115288886 A CN115288886 A CN 115288886A
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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
- F02M21/0257—Details of the valve closing elements, e.g. valve seats, stems or arrangement of flow passages
- F02M21/026—Lift valves, i.e. stem operated valves
- F02M21/0263—Inwardly opening single or multi nozzle valves, e.g. needle valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/12—Arrangements for cooling other engine or machine parts
- F01P3/16—Arrangements for cooling other engine or machine parts for cooling fuel injectors or sparking-plugs
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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
- F02M21/0251—Details of actuators therefor
- F02M21/0254—Electric actuators, e.g. solenoid or piezoelectric
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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
- F02M21/0287—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers characterised by the transition from liquid to gaseous phase ; Injection in liquid phase; Cooling and low temperature storage
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Analytical Chemistry (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The utility model relates to an internal-combustion engine fuel injector technical field, specifically a collect two electromagnetic control formula ammonia fuel oil sprayers of spouting in an organic whole a little, including the injector body, the intermediate block, two high-speed solenoid valves, needle valve idol and lock cap, needle valve idol passes through the lock cap and fixes in the injector bottom, the intermediate block is installed between needle valve idol and the injector body, be equipped with two mounting holes in the intermediate block, high-speed solenoid valve installs in the mounting hole of intermediate block, needle valve idol includes fuel passage distribution piece, the needle valve body, outer needle valve reset spring, spring upper bracket, outer needle valve, interior needle valve reset spring, interior needle valve control lever, outer needle valve lift locating sleeve and end cap, through the setting of interior needle valve and outer needle valve in this scheme, ammonia fuel passageway and little fuel channel have been set up respectively, the independent injection of two kinds of fuel, can provide reliable prerequisite condition for the ignition of ammonia fuel, the injection system structure of ammonia fuel engine has been simplified greatly, the demand of external little system that spouts has been reduced.
Description
Technical Field
The invention relates to the technical field of fuel injectors of internal combustion engines, in particular to a dual-electromagnetic control type ammonia fuel injector integrating micro-injection.
Background
The International Maritime Organization (IMO) and various countries have set out corresponding policies and regulations to strictly limit the emission of ships, and the International Maritime Organization (IMO) plans to strictly control the emission of shipping greenhouse gases with the aim of decarburization: compared with 2008, it is specified that the carbon dioxide emission per transport unit is reduced by 40% by 2030 and 70% by 2050, which gradually moves towards the zero carbon target. The prior art has difficulty in meeting the requirement of energy efficiency base reduction, so that the development of the ship power system technology is urgent.
The ammonia fuel injector is the core of the overall ammonia fuel supply system and directly affects the injection quality of the fuel system, thereby affecting the combustion quality in the engine cylinder and further affecting the economy and emission thereof. The ammonia fuel can not realize compression ignition, and ignition measures must be taken, wherein the most common means for injecting the ignition fuel is to add a set of micro-injection system, the structure complexity is increased, the system reliability is reduced, and the injection capability of the micro-injection system is limited.
Disclosure of Invention
The invention aims to provide a micro-injection integrated double-electromagnetic control type ammonia fuel injector, which meets the special requirement of the property characteristic that ammonia fuel gas needs to be ignited on an injection system.
In order to achieve the above object, the basic scheme of the invention is as follows: a double-electromagnetic control type ammonia fuel injector integrating micro-injection comprises an injector body, a middle block, two high-speed electromagnetic valves, a needle valve matching part and a tightening cap, wherein the needle valve matching part is fixed at the bottom of the injector through the tightening cap, the middle block is arranged between the needle valve matching part and the injector body, two mounting holes are arranged in the middle block, the high-speed electromagnetic valves are arranged in the mounting holes of the middle block,
the needle valve matching part comprises a fuel channel distribution block, a needle valve body, an outer needle valve return spring, a spring upper seat, an outer needle valve, an inner needle valve return spring, an inner needle valve control rod, an outer needle valve lift positioning sleeve and a plug, the fuel channel distribution block is fixed at the top of the needle valve body, and the fuel channel distribution block and the needle valve body are both of hollow structures;
the outer needle valve is arranged in a needle valve body, the outer needle valve reset spring and the upper spring seat are sleeved on the outer needle valve, the upper spring seat is fixed at the bottom of a fuel channel distribution block, a boss is arranged on the outer needle valve, the outer needle valve reset spring is arranged between the boss and the upper spring seat, a micro-injection fuel channel is formed between the outer needle valve and the needle valve body, a micro-injection fuel inlet is formed in the fuel channel distribution block and communicated with the micro-injection fuel channel, a micro-injection fuel sealing strip is formed between the outer needle valve and the needle valve body in a conical surface sealing mode, a micro-injection fuel gap seal is formed between the bottom of the outer needle valve and the needle valve body, a plurality of micro-injection fuel injection holes are formed in the needle valve body, and the micro-injection fuel injection holes are located between the micro-injection fuel sealing strip and the micro-injection fuel gap seal;
the outer needle valve is of a hollow structure, the plug, the inner needle valve control rod and the inner needle valve are sequentially installed in the outer needle valve from top to bottom, the upper end face of the plug is flush with the upper end face of the outer needle valve, the inner needle valve is fixedly connected with the inner needle valve control rod, the inner wall of the outer needle valve is provided with a stepped groove, the inner needle valve reset spring is sleeved outside the inner needle valve, the top end of the inner needle valve reset spring abuts against the inner needle valve control rod, the bottom end of the inner needle valve reset spring abuts against the bottom of the stepped groove of the inner wall of the outer needle valve, the bottom of the inner needle valve extends out of the outer needle valve, the bottom of the inner needle valve is of an inverted cone, the bottom of the needle valve body is an inverted cone matched with the inner needle valve, an ammonia fuel channel is formed between the inner wall of the outer needle valve and the inner needle valve control rod and the inner needle valve, an ammonia fuel inlet is arranged on the fuel channel distribution block, an ammonia fuel through hole is formed in the side wall of the outer needle valve, and the ammonia fuel inlet is communicated with the ammonia fuel channel;
the outer needle valve lift control sleeve is installed on a fuel channel distribution block, the plug is installed in the outer needle valve lift control sleeve, an inner needle valve control oil duct and an outer needle valve control oil duct are arranged in the outer needle valve lift control sleeve and the plug, an inner needle valve control cavity is formed between the upper end face of an inner needle valve control rod and the lower end face of the plug, the inner needle valve control oil duct is communicated with the inner needle valve control cavity, the upper end face of the outer needle valve lift control sleeve is higher than the upper end face of the plug, an outer needle valve control cavity is formed by enclosing the inner wall of the outer needle valve lift control sleeve and the upper end face of the plug, the outer needle valve control oil duct is communicated with the outer needle valve control cavity, and the outer needle valve control oil duct are controlled by the high-speed electromagnetic valve respectively.
Further, the needle valve matching part further comprises a cooling sleeve, the cooling sleeve is installed on the outer side of the needle valve body, an annular cooling cavity is formed between the cooling sleeve and the outer wall of the needle valve body, a cooling oil inlet channel and a cooling oil return channel are arranged in the needle valve body, and the cooling oil inlet channel and the cooling oil return channel are communicated with the annular cooling cavity.
Further, the cooling jacket inner wall and the needle valve body outer wall are equipped with assorted screw thread, cooling jacket and needle valve body threaded connection, the needle valve body bottom sets up to the toper, the cooling bottom be with needle valve body bottom toper assorted conical surface.
Further, be provided with a plurality of wedge arch on the back taper of interior needle valve bottom, be provided with the wedge recess that matches each other with the wedge arch on the back taper of needle valve body.
Further, interior needle valve control lever bottom is provided with the screw hole, interior needle valve upper end be provided with screw hole assorted external screw thread, interior needle valve threaded connection is in needle valve control lever bottom.
Furthermore, four arc-shaped grooves are formed in the outer wall of the inner needle valve control rod, an ammonia fuel channel is formed between the four arc-shaped grooves and the outer needle valve, and an ammonia fuel channel is formed between the four arc-shaped grooves and the inner needle valve.
Furthermore, a spiral fuel groove is arranged at the lower part of the boss at the outer side of the outer needle valve, and a matching part gap between the outer side of the spiral fuel groove and the needle valve body is 15-20 microns.
Furthermore, matching coupler piece gaps of 4-6 microns are arranged between the outer needle valve and the spring upper seat, between the fuel channel distribution block and between the inner needle valve and the outer needle valve, and between the inner needle valve control rod and the outer needle valve, matching coupler piece gaps of 3-5 microns are arranged.
The beneficial effect of this scheme: (1) According to the scheme, the inner needle valve and the outer needle valve are arranged, the ammonia fuel channel and the micro-injection fuel channel are respectively arranged, the ammonia fuel channel can independently realize the super-atomization injection of ammonia fuel, the micro-injection fuel channel can independently realize the injection of micro-injection fuel, the ammonia fuel channel and the micro-injection fuel channel are not influenced by each other and are completely independent, two sets of high-speed electromagnetic valves are adopted for independent control, and the injection time and the injection rule of two sets of injection systems can be flexibly adjusted according to requirements. The two fuels are independently injected, so that reliable preconditions can be provided for the ignition of the ammonia fuel, the structure of an injection system of an ammonia fuel engine is greatly simplified, and the requirement of an external micro-injection system is reduced.
(2) A micro-injection fuel sealing strip is formed between the outer needle valve and the needle valve body in a conical surface sealing mode; the bottom of the inner needle valve is an inverted cone, the plane of the upper part of the inverted cone surface forms a wedge-shaped sealing strip of the ammonia fuel in a plane sealing mode, and a micro-injection fuel gap seal is arranged between the outer needle valve and the needle valve body and separates a micro-injection fuel channel from the ammonia fuel channel; on one hand, the ammonia fuel wedge-shaped sealing belt separates the ammonia fuel channel from the cylinder and forms effective sealing for the ammonia fuel in the ammonia fuel channel; adopt the back taper between needle valve and the needle valve body sealed in the on the other hand, can be when the cylinder burning detonation, more effectual separates the high temperature high pressure gas is sealed in the cylinder, firstly can effectively prevent the influence of high temperature high pressure gas to the high pressure seal face, improve the life and the use reliability of needle valve idol piece, secondly can effectively prevent scurring back of high temperature high pressure gas, get into fuel room, cause the gasification aggravation of ammonia fuel, promote the safety in utilization and the reliability of needle valve idol piece greatly.
(3) Processing has a plurality of evenly distributed's wedge recess on the back taper of needle valve body, processing has the wedge arch that a plurality of matches with it on the back taper of interior needle valve, when interior needle valve goes upward to take a seat, the wedge arch forms ammonia fuel wedge sealing area with wedge recess matching, when interior needle valve is opened down, the wedge arch forms wedge ammonia fuel injection runner with the wedge recess, a plurality of injection runner can realize ammonia fuel's super atomizing and spray, and can satisfy the injection requirement of the different forms of ammonia fuel simultaneously, realize the double-phase injection of gas-liquid, provide feasible route for ammonia fuel's use on the diesel engine.
(4) The cooling jacket is installed outside the needle valve body through threaded connection's mode to adopt the sealed mode of conical surface to carry out the sealed of coolant oil, threaded connection's cooling jacket can be more nimble examine, adjust and restore the cooling chamber on the one hand, and can change the cooling effect in cooling chamber according to the demand, and on the other hand, the overall structure of needle valve body can be simplified to the combination formula cooling chamber, improves the intensity and the reliability of needle valve body.
(5) The inner needle valve is connected with the inner needle valve control rod through threads, an inner needle valve lift pre-adjustment gap is formed in the inner needle valve control rod due to the arrangement of the threaded holes, the relative position of the inner needle valve and the inner needle valve control rod can be adjusted during assembly, the inner needle valve lift control gap is adjusted, adjustment control over the inner needle valve lift is achieved, and the opening degree of a fuel injection flow channel is further controlled. The structure can meet the series design of products, and in the series design process, the requirement of different powers on the fuel injection quantity can be met by pre-adjusting the inner needle valve lift during assembly and adjusting the opening degree of a fuel injection flow channel, so that the improvement requirement of the series power requirement of the diesel engine of the same model on an injection device is greatly simplified.
Drawings
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view of A in FIG. 1;
FIG. 3 is an enlarged view of B in FIG. 1;
FIG. 4 is a schematic view of a cooling oil passage in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Reference numerals in the drawings of the specification include: the device comprises an oil injector body 1, a middle block 2, a high-speed electromagnetic valve 3, a tightening cap 4, a fuel channel distribution block 5, a needle valve body 6, an outer needle valve return spring 7, a spring upper seat 8, an outer needle valve 9, an inner needle valve 10, an inner needle valve return spring 11, an inner needle valve control rod 12, an outer needle valve lift positioning sleeve 13, a plug 14, a cooling sleeve 15, a micro-injection fuel inlet 16, a micro-injection fuel spray hole 17, an ammonia fuel inlet 18, an inner needle valve control oil passage 19, an outer needle valve control oil passage 20, an inner needle valve control cavity 21, an outer needle valve control cavity 22, a cooling oil inlet channel 23 and a cooling oil return channel 24.
Examples
Substantially as shown in figure 1: a double electromagnetic control type ammonia fuel injector integrating micro-injection comprises an injector body 1, a middle block 2, two high-speed electromagnetic valves 3, a needle valve matching part and a tightening cap 4, wherein the needle valve matching part is fixed at the bottom of the injector through the tightening cap 4, the middle block 2 is arranged between the needle valve matching part and the injector body 1, two mounting holes are arranged in the middle block 2, the high-speed electromagnetic valves 3 are arranged in the mounting holes of the middle block 2,
the needle valve matching part comprises a fuel channel distribution block 5, a needle valve body 6, an outer needle valve return spring 7, a spring upper seat 8, an outer needle valve 9, an inner needle valve 10, an inner needle valve return spring 11, an inner needle valve control rod 12, an outer needle valve lift positioning sleeve 13, a plug 14 and a cooling sleeve 15, wherein the fuel channel distribution block 5 is fixed at the top of the needle valve body 6, and the fuel channel distribution block 5 and the needle valve body 6 are both of a hollow structure;
an outer needle valve 9 is arranged in a needle valve body 6, an outer needle valve return spring 7 and an upper spring seat 8 are sleeved on the outer side of the outer needle valve 9, the upper spring seat 8 is fixed at the bottom of a fuel channel distribution block 5, a boss is arranged on the outer side of the outer needle valve 9, the outer needle valve return spring 7 is arranged between the boss and the upper spring seat 8, a micro-injection fuel channel is formed between the outer needle valve 9 and the needle valve body 6, a micro-injection fuel inlet 16 is arranged on an oil injector body 1, a middle block 2 and the fuel channel distribution block 5, the micro-injection fuel inlet 16 is communicated with the micro-injection fuel channel, a micro-injection fuel sealing strip is formed by the outer needle valve 9 and the needle valve body 6 in a conical surface sealing mode, a micro-injection fuel gap seal is formed between the bottom of the outer needle valve 9 and the needle valve body 6, a plurality of micro-injection fuel spray orifices 17 are arranged on the needle valve body 6, and the micro-injection fuel gap seal is positioned between the micro-injection fuel sealing strip and the micro-injection fuel gap seal;
the outer needle valve 9 is of a hollow structure, a plug 14, an inner needle valve control rod 12 and an inner needle valve 10 are sequentially installed in the outer needle valve 9 from top to bottom, the upper end surface of the plug 14 is flush with the upper end surface of the outer needle valve 9, a threaded hole is formed in the bottom of the inner needle valve control rod 12, an external thread matched with the threaded hole is arranged at the upper end of the inner needle valve 10, the inner needle valve 10 is in threaded connection with the bottom of the inner needle valve control rod 12, a stepped groove is formed in the inner wall of the outer needle valve 9, an inner needle valve reset spring 11 is sleeved outside the inner needle valve 10, the top end of the inner needle valve reset spring 11 abuts against the inner needle valve control rod 12, the bottom end of the inner needle valve reset spring 11 abuts against the bottom of the stepped groove in the inner wall of the outer needle valve 9, and as shown in a combined view 2, the bottom of the inner needle valve 10 extends out of the outer needle valve 9, the bottom of the inner needle valve 10 is inverted cone-shaped, the bottom of the needle valve body 6 is inverted cone-shaped matched with the inner needle valve 10, a plurality of wedge-shaped protrusions are arranged on the inverted cone-shaped surface at the bottom of the inner needle valve 10, wedge-shaped grooves matched with the wedge-shaped protrusions are formed in the inverted cone-shaped surface of the needle valve body 6, four arc-shaped grooves are formed in the outer wall of the inner needle valve control rod 12, an ammonia fuel channel is formed between the four arc-shaped grooves and the outer needle valve 9, an ammonia fuel channel is formed between the four arc-shaped grooves and the inner needle valve 10 at the lower part of the inner wall of the outer needle valve 9, ammonia fuel inlets 18 are formed in the oil injector body 1, the middle block 2 and the fuel channel distribution block 5, ammonia fuel through holes are formed in the side wall of the outer needle valve 9, and the ammonia fuel inlets 18 are communicated with the ammonia fuel channel; the lower part of the boss at the outer side of the outer needle valve 9 is provided with a spiral fuel groove, and a matching part clearance of 15-20 μm is arranged between the outer side of the spiral fuel groove and the needle valve body 6.
Referring to fig. 3, the lift control sleeve of the outer needle valve 9 is installed on the fuel channel distribution block 5, the plug 14 is installed in the lift control sleeve of the outer needle valve 9, an inner needle valve control oil passage 19 and an outer needle valve control oil passage 20 are arranged in the lift control sleeve of the outer needle valve 9 and the plug 14, an inner needle valve control cavity 21 is formed between the upper end surface of the inner needle valve control rod 12 and the lower end surface of the plug 14, the inner needle valve control oil passage 19 is communicated with the inner needle valve control cavity 21, the upper end surface of the lift control sleeve of the outer needle valve 9 is higher than the upper end surface of the plug 14, an outer needle valve control cavity 22 is formed by enclosing the inner wall of the lift control sleeve of the outer needle valve 9 and the upper end surface of the plug 14, the outer needle valve control oil passage 20 is communicated with the outer needle valve control cavity 22, and the two high-speed electromagnetic valves 3 respectively control the inner needle valve control oil passage 19 and the outer needle valve control oil passage 20. The clearance of the matching parts arranged between the outer needle valve 9 and the spring upper seat 8, the fuel channel distribution block 5 and the outer needle valve lift positioning sleeve 13 is 4-6 mu m, and the clearance of the matching parts arranged between the inner needle valve 10 and the outer needle valve 9 and between the inner needle valve control rod 12 and the outer needle valve 9 is 3-5 mu m.
As shown in fig. 4, the cooling jacket 15 is installed outside the needle valve body 6, an annular cooling cavity is formed between the cooling jacket 15 and the outer wall of the needle valve body 6, the oil injector body 1, the middle block 2, the fuel channel distribution block 5 and the needle valve body 6 are internally provided with a cooling oil inlet channel 23 and a cooling oil return channel 24, the cooling oil inlet channel 23 and the cooling oil return channel 24 are both communicated with the annular cooling cavity, the inner wall of the cooling jacket 15 and the outer wall of the needle valve body 6 are provided with matched threads, the cooling jacket 15 is in threaded connection with the needle valve body 6, the bottom of the needle valve body 6 is conical, and the cooling bottom is a conical surface matched with the conical surface at the bottom of the needle valve body 6.
The specific implementation process is as follows: through the arrangement of the inner needle valve 10 and the outer needle valve 9, an ammonia fuel channel and a micro-injection fuel channel are respectively arranged, the ammonia fuel channel can independently realize the super-atomized injection of ammonia fuel, the micro-injection fuel channel can independently realize the injection of micro-injection fuel, the ammonia fuel channel and the micro-injection fuel channel are not influenced by each other and are completely independent, two sets of high-speed electromagnetic valves 3 are adopted for independent control, and the injection time and the injection rule of the two sets of injection systems can be flexibly adjusted according to requirements. The two fuels are independently injected, so that reliable preconditions can be provided for ignition of the ammonia fuel, the structure of an injection system of the ammonia fuel engine is greatly simplified, and the requirement of an external micro-injection system is reduced.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (8)
1. The utility model provides a collect and spout two electromagnetic control formula ammonia fuel oil sprayers in an organic whole which characterized in that: the high-speed electromagnetic valve comprises an oil injector body, a middle block, two high-speed electromagnetic valves, a needle valve matching part and a tightening cap, wherein the needle valve matching part is fixed at the bottom of the oil injector through the tightening cap, the middle block is arranged between the needle valve matching part and the oil injector body, two mounting holes are arranged in the middle block, the high-speed electromagnetic valves are arranged in the mounting holes of the middle block,
the needle valve matching part comprises a fuel channel distribution block, a needle valve body, an outer needle valve return spring, a spring upper seat, an outer needle valve, an inner needle valve return spring, an inner needle valve control rod, an outer needle valve lift positioning sleeve and a plug, the fuel channel distribution block is fixed at the top of the needle valve body, and the fuel channel distribution block and the needle valve body are both of hollow structures;
the outer needle valve is arranged in a needle valve body, the outer needle valve reset spring and the upper spring seat are sleeved on the outer needle valve, the upper spring seat is fixed at the bottom of a fuel channel distribution block, a boss is arranged on the outer needle valve, the outer needle valve reset spring is arranged between the boss and the upper spring seat, a micro-injection fuel channel is formed between the outer needle valve and the needle valve body, a micro-injection fuel inlet is formed in the fuel channel distribution block and communicated with the micro-injection fuel channel, a micro-injection fuel sealing strip is formed between the outer needle valve and the needle valve body in a conical surface sealing mode, a micro-injection fuel gap seal is formed between the bottom of the outer needle valve and the needle valve body, a plurality of micro-injection fuel injection holes are formed in the needle valve body, and the micro-injection fuel injection holes are located between the micro-injection fuel sealing strip and the micro-injection fuel gap seal;
the outer needle valve is of a hollow structure, the plug, the inner needle valve control rod and the inner needle valve are sequentially installed in the outer needle valve from top to bottom, the upper end face of the plug is flush with the upper end face of the outer needle valve, the inner needle valve is fixedly connected with the inner needle valve control rod, the inner wall of the outer needle valve is provided with a stepped groove, the inner needle valve is sleeved outside the inner needle valve, the top end of the inner needle valve is abutted against the inner needle valve control rod, the bottom end of the inner needle valve is abutted against the bottom of the stepped groove of the inner wall of the outer needle valve, the outer needle valve is extended out of the bottom of the inner needle valve, the bottom of the inner needle valve is of an inverted cone, the bottom of the needle valve body is an inverted cone matched with the inner needle valve, an ammonia fuel channel is formed between the inner wall of the outer needle valve and the inner needle valve control rod and the inner needle valve, an ammonia fuel inlet is formed on the fuel channel distribution block, the side wall of the outer needle valve is provided with an ammonia fuel through hole, and the ammonia fuel inlet is communicated with the ammonia fuel channel;
the outer needle valve lift control sleeve is installed on a fuel channel distribution block, the plug is installed in the outer needle valve lift control sleeve, an inner needle valve control oil channel and an outer needle valve control oil channel are arranged in the outer needle valve lift control sleeve and the plug, an inner needle valve control cavity is formed between the upper end face of an inner needle valve control rod and the lower end face of the plug, the inner needle valve control oil channel is communicated with the inner needle valve control cavity, the upper end face of the outer needle valve lift control sleeve is higher than the upper end face of the plug, an outer needle valve control cavity is formed by enclosing the inner wall of the outer needle valve lift control sleeve and the upper end face of the plug, the outer needle valve control oil channel is communicated with the outer needle valve control cavity, and the outer needle valve control oil channel are controlled by the high-speed electromagnetic valve respectively.
2. The dual-electromagnetic control type ammonia fuel injector integrating micro-injection as claimed in claim 1, wherein: the needle valve matching part further comprises a cooling sleeve, the cooling sleeve is installed on the outer side of the needle valve body, an annular cooling cavity is formed between the cooling sleeve and the outer wall of the needle valve body, a cooling oil inlet channel and a cooling oil return channel are arranged in the needle valve body, and the cooling oil inlet channel and the cooling oil return channel are communicated with the annular cooling cavity.
3. The dual-electromagnetic control type ammonia fuel injector integrating micro-injection as claimed in claim 2, characterized in that: the needle valve body is characterized in that the inner wall of the cooling sleeve and the outer wall of the needle valve body are provided with matched threads, the cooling sleeve is in threaded connection with the needle valve body, the bottom of the needle valve body is conical, and the cooling bottom is a conical surface matched with the conical bottom of the needle valve body.
4. The dual-electromagnetic control type ammonia fuel injector integrating micro-injection as claimed in claim 1, characterized in that: be provided with a plurality of wedge arch on the back taper of interior needle valve bottom, be provided with the wedge recess that matches each other with the wedge arch on the back taper of needle valve body.
5. The micro-injection integrated dual-electromagnetic control type ammonia fuel injector according to claim 4, characterized in that: the bottom of the inner needle valve control rod is provided with a threaded hole, the upper end of the inner needle valve is provided with an external thread matched with the threaded hole, and the inner needle valve is in threaded connection with the bottom of the inner needle valve control rod.
6. The dual-electromagnetic control type ammonia fuel injector integrating micro-injection as claimed in claim 1, characterized in that: the outer wall of the inner needle valve control rod is provided with four arc-shaped grooves and an ammonia fuel channel is formed between the four arc-shaped grooves and the outer needle valve, and the lower portion of the inner wall of the outer needle valve is provided with four arc-shaped grooves and an ammonia fuel channel is formed between the four arc-shaped grooves and the inner needle valve.
7. The dual-electromagnetic control type ammonia fuel injector integrating micro-injection as claimed in claim 6, characterized in that: the lower part of the lug boss at the outer side of the outer needle valve is provided with a spiral fuel groove, and a gap of a matching part between the outer side of the spiral fuel groove and the needle valve body is 15-20 microns.
8. The dual-electromagnetic control type ammonia fuel injector integrating micro-injection as claimed in claim 7, wherein: the gap between the outer needle valve and the matching parts arranged on the spring upper seat, the fuel channel distribution block and the outer needle valve lift positioning sleeve is 4-6 mu m, and the gap between the inner needle valve and the outer needle valve and the gap between the inner needle valve and the matching parts arranged between the inner needle valve control rod and the outer needle valve are 3-5 mu m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210793121.0A CN115288886B (en) | 2022-07-07 | 2022-07-07 | Two electromagnetic control formula ammonia fuel injector of collection micro-jetting in an organic whole |
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| CN202210793121.0A CN115288886B (en) | 2022-07-07 | 2022-07-07 | Two electromagnetic control formula ammonia fuel injector of collection micro-jetting in an organic whole |
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| CN115288886A true CN115288886A (en) | 2022-11-04 |
| CN115288886B CN115288886B (en) | 2023-09-26 |
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| CN202210793121.0A Active CN115288886B (en) | 2022-07-07 | 2022-07-07 | Two electromagnetic control formula ammonia fuel injector of collection micro-jetting in an organic whole |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009293385A (en) * | 2008-06-02 | 2009-12-17 | Mitsubishi Fuso Truck & Bus Corp | Fuel injection valve and fuel injection control device for engine using the same |
| CN106499555A (en) * | 2016-09-19 | 2017-03-15 | 哈尔滨工程大学 | Integrated form electromagnetism and double piezoelectricity hybrid fuel jet devices |
| CN111336048A (en) * | 2019-12-09 | 2020-06-26 | 天津大学 | Fuel injector for realizing diesel/natural gas dual-fuel injection |
| CN114151243A (en) * | 2021-11-19 | 2022-03-08 | 哈尔滨工程大学 | Super-atomized ammonia fuel injector |
-
2022
- 2022-07-07 CN CN202210793121.0A patent/CN115288886B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009293385A (en) * | 2008-06-02 | 2009-12-17 | Mitsubishi Fuso Truck & Bus Corp | Fuel injection valve and fuel injection control device for engine using the same |
| CN106499555A (en) * | 2016-09-19 | 2017-03-15 | 哈尔滨工程大学 | Integrated form electromagnetism and double piezoelectricity hybrid fuel jet devices |
| CN111336048A (en) * | 2019-12-09 | 2020-06-26 | 天津大学 | Fuel injector for realizing diesel/natural gas dual-fuel injection |
| CN114151243A (en) * | 2021-11-19 | 2022-03-08 | 哈尔滨工程大学 | Super-atomized ammonia fuel injector |
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| CN115288886B (en) | 2023-09-26 |
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