CN111535955B - Quick-response dual-fuel injection valve - Google Patents
Quick-response dual-fuel injection valve Download PDFInfo
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- CN111535955B CN111535955B CN202010478509.2A CN202010478509A CN111535955B CN 111535955 B CN111535955 B CN 111535955B CN 202010478509 A CN202010478509 A CN 202010478509A CN 111535955 B CN111535955 B CN 111535955B
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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
- F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
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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
- F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
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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
- F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
- F02M21/0239—Pressure or flow regulators therefor
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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)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to the technical field of dual-fuel injection valves, and discloses a fast-response dual-fuel injection valve, which comprises: the valve body is provided with an air inlet channel; the nozzle sleeve is sleeved at one end of the valve body and limits a pressure regulating cavity, the nozzle sleeve is provided with a gas orifice and a communicating groove, the communicating groove is communicated with the gas inlet channel and comprises an annular groove and a plurality of gas grooves distributed at intervals, and the gas grooves are communicated with the annular groove and extend outwards along the circumferential direction of the annular groove; the pressure regulating subassembly is located the pressure regulating intracavity, and the fumarole is isolated with inlet channel when the tip butt of pressure regulating subassembly and nozzle cover, and the pressure regulating subassembly can remove so that inlet channel and fumarole intercommunication for the nozzle cover when inlet channel lets in gas. The gas groove additionally arranged on the quick-response dual-fuel injection valve disclosed by the invention enables the response speed of the pressure regulating assembly to be improved, and the injection effect of the quick-response dual-fuel injection valve is enhanced.
Description
Technical Field
The invention relates to the technical field of dual-fuel injection valves, in particular to a quick-response dual-fuel injection valve.
Background
The existing dual-fuel injection valve is generally an injection valve integrating combustible gas and combustible oil, and can inject oil or gas into a combustion chamber.
Disclosure of Invention
Based on the above, it is an object of the present invention to provide a fast response dual fuel injection valve, which can increase the response speed of the dual fuel injection valve, thereby enhancing the injection effect of the fast response dual fuel injection valve.
In order to achieve the purpose, the invention adopts the following technical scheme:
a fast response dual fuel injection valve comprising: the valve body is provided with an air inlet channel; the nozzle sleeve is sleeved at one end of the valve body and defines a pressure regulating cavity, the nozzle sleeve is provided with a gas orifice and a communicating groove, the communicating groove is communicated with the gas inlet channel and comprises an annular groove and a plurality of gas grooves distributed at intervals, the gas grooves are communicated with the annular groove, and the gas grooves extend outwards along the circumferential direction of the annular groove; the pressure regulating subassembly, the pressure regulating subassembly is located the pressure regulating intracavity, the pressure regulating subassembly with during the tip butt of nozzle cover the fumarole with inlet channel is isolated, when inlet channel lets in gas the pressure regulating subassembly can for the nozzle cover removes so that inlet channel with the fumarole intercommunication.
As a preferable scheme of the quick-response dual-fuel injection valve, the gas grooves are distributed at equal intervals along the circumferential direction of the annular groove, and the gas injection hole is arranged between every two adjacent gas grooves.
As a preferred option for a fast response dual fuel injection valve, the air groove is a scalloped annular groove.
As a preferred scheme of the dual-fuel injection valve with quick response, the dual-fuel injection valve with quick response further comprises an oil control valve, an oil control inlet channel and an oil control return channel which are respectively communicated with the pressure regulating cavity are arranged on the valve body, the oil control inlet channel is communicated with an oil return tank, and the oil control valve is arranged on the oil control return channel.
As a quick response's preferred scheme of dual fuel injection valve, the pressure regulating subassembly includes elastic component and nozzle coupling cover, the one end butt of elastic component in the valve body, the other end butt of elastic component in the one end of nozzle coupling cover, the other end butt of nozzle coupling cover in the nozzle cover, nozzle coupling cover respectively with the valve body with nozzle cover clearance fit, nozzle coupling cover can with nozzle cover butt is so that the fumarole with air intake duct is isolated.
As a preferable scheme of the dual-fuel injection valve with quick response, an end surface of the nozzle coupling sleeve abutted against the elastic member is a first circular ring, an end surface of the nozzle coupling sleeve capable of abutting against the valve body is a second circular ring, and the area of the first circular ring is larger than that of the second circular ring.
As a preferred option for a fast response dual fuel injection valve, the nozzle coupling sleeve is a thermally conductive nozzle coupling sleeve.
As a preferred scheme of the dual-fuel injection valve with quick response, the dual-fuel injection valve with quick response further comprises an oil injection valve and a valve rod, an oil cavity, an oil injection hole and an oil injection oil duct are arranged on the valve body, the oil injection hole and the oil injection oil duct are respectively communicated with the oil cavity, the valve rod is arranged in the oil cavity, one end of the valve rod is connected with the oil injection valve, the other end of the valve rod can abut against the valve body, the oil injection hole is isolated from the oil injection oil duct when the valve rod abuts against the valve body, and the oil injection hole is communicated with the oil injection oil duct when the valve rod is separated from the valve body.
As a preferred scheme of the quick-response dual-fuel injection valve, a first inclined plane is arranged on the valve body, and a second inclined plane matched with the first inclined plane is arranged on the valve rod.
As a preferred scheme of the quick-response dual-fuel injection valve, the oil injection holes are formed in the end portion of the valve body, the number of the oil injection holes is a plurality, and the oil injection holes are distributed at equal intervals along the circumferential direction of the valve body.
The invention has the beneficial effects that: in the time period from an isolated state to a communicated state of the air inlet channel and the gas orifice, the added air groove increases the action area of the gas entering through the air inlet channel on the nozzle sleeve, so that the thrust of the gas on the pressure regulating assembly is increased, the moving speed of the pressure regulating assembly is increased, namely once the gas is introduced from the air inlet channel, the pressure regulating assembly can be quickly separated from the valve body, the response speed of the pressure regulating assembly is improved, the air inlet channel is communicated with the gas orifice, and the injection effect of the quick-response double-fuel injection valve is enhanced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a cross-sectional view of a fast response dual fuel injection valve provided by a specific embodiment of the present invention;
FIG. 2 is a top view of a nozzle sleeve provided in accordance with an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a nozzle sleeve provided in accordance with an embodiment of the present invention;
fig. 4 is a partial enlarged view of fig. 1 at a.
In the figure:
101. an air intake passage; 102. controlling oil to enter the channel; 103. an oil chamber; 104. an oil spray hole; 105. an oil injection duct; 106. an oil control and return passage; 11. a first valve body; 12. a second valve body; 13. a third valve body;
2. a nozzle sleeve; 201. a pressure regulating cavity; 202. a gas injection hole; 203. a communicating groove; 2031. an annular groove; 2032. an air tank;
3. a voltage regulating component; 31. an elastic member; 32. a nozzle coupling sleeve;
41. an oil control valve; 42. an oil injection valve; 43. a valve stem; 44. an oil control connector; 440. an oil control inlet;
51. a first locking cap; 52. a second locking cap; 53. and (5) sealing rings.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment provides a quick response's dual fuel injection valve, as shown in fig. 1 to 4, this dual fuel injection valve includes the valve body, nozzle bush 2 and pressure regulating assembly 3, be equipped with inlet channel 101 on the valve body, the one end of valve body is located to nozzle bush 2 cover and both inject pressure regulating chamber 201, be equipped with fumarole 202 and intercommunication groove 203 on the nozzle bush 2, intercommunication groove 203 and inlet channel 101 intercommunication, intercommunication groove 203 includes annular groove 2031 and nine interval distribution's gas groove 2032, gas groove 2032 communicates with annular groove 2031 and gas groove 2032 outwards extends along the circumference of annular groove 2031, pressure regulating assembly 3 locates in pressure regulating chamber 201, fumarole 202 is isolated with inlet channel 101 when pressure regulating assembly 3 and the tip butt of nozzle bush 2, pressure regulating assembly 3 can remove so that inlet channel 101 communicates with fumarole 202 for nozzle bush 2 when inlet channel 101 lets in gas.
In the time period from the isolated state to the communicated state of the intake channel 101 and the gas injection hole 202, the added gas groove 2032 increases the acting area of the gas entering through the intake channel 101 on the nozzle sleeve 2, thereby increasing the thrust of the gas on the pressure regulating assembly 3 and increasing the moving speed of the pressure regulating assembly 3. That is, once gas is introduced from the gas inlet channel 101, the pressure regulating assembly 3 can be rapidly separated from the valve body, so that the gas inlet channel 101 is communicated with the gas injection hole 202, and the injection effect of the dual fuel injection valve with rapid response is enhanced.
Specifically, as shown in fig. 2 and fig. 3, the number of the gas injection holes 202 of this embodiment is nine, the gas injection holes 202 are circular holes, the gas grooves 2032 are fan-shaped annular grooves, the nine gas grooves 2032 are distributed at equal intervals along the circumferential direction of the annular groove 2031, the gas injection holes 202 are arranged between two adjacent gas grooves 2032, the gas injection holes 202 are arranged at equal intervals along the circumferential direction of the nozzle sleeve 2, the gas grooves 2032 and the gas injection holes 202 are arranged at equal intervals to ensure the pressure equalization of the nozzle sleeve 2 and to increase the uniformity of the injection, and the nozzle sleeve 2 is prevented from being subjected to the thrust of gas, so that the nozzle sleeve 2 has the oblique probability.
It should be noted that, in other embodiments of the present invention, the number and the shape of the air grooves 2032 are not limited to the limitation of this embodiment, the number of the air grooves 2032 may be other numbers, the shape of the air grooves 2032 may be other shapes, the time period from the isolated state to the communicated state of the air inlet channel 101 and the air injection holes 202 may be changed by changing the number of the air grooves 2032, and the number of the air grooves 2032 is specifically set according to actual needs.
Specifically, as shown in fig. 1, the valve body of the present embodiment includes a first valve body 11, a second valve body 12, and a third valve body 13 fixedly connected in sequence, the nozzle sleeve 2 is screwed to the third valve body 13, and a sealing ring 53 is provided between the nozzle sleeve 2 and the third valve body 13 to ensure the sealing property of the connection therebetween. In order to ensure the tight connection of the first valve body 11 and the second valve body 12, a first locking cap 51 is provided on the outer side of the connection between the first valve body 11 and the second valve body 12, and in order to ensure the tight connection between the second valve body 12 and the third valve body 13, a second locking cap 52 is provided on the outer side of the connection between the second valve body 12 and the third valve body 13, and the second locking cap 52 abuts against the nozzle sleeve 2 to firmly fix the nozzle sleeve 2 on the third valve body 13.
As shown in fig. 1, the dual fuel injection valve with fast response of this embodiment further includes an oil control valve 41 and an oil control connecting member 44 communicated with the oil return tank, the oil control valve 41 is a solenoid valve, the oil control connecting member 44 is provided with an oil control inlet 440, the oil control inlet 440 is directly communicated with the oil return tank, the valve body is provided with an oil control inlet passage 102 and an oil control oil return passage 106 respectively communicated with the pressure regulating cavity 201, the oil control valve 41 is disposed on the oil control oil return passage 106, one end of the oil control inlet passage 102 is communicated with the oil return tank through the oil control connecting member 44, the other end is directly communicated with the pressure regulating cavity 201, and oil in the oil return tank can sequentially enter the pressure regulating cavity 201 through the oil control connecting member 44 and the oil control inlet passage 102. When accuse fuel tap 41 was opened, the fluid in the pressure regulating chamber 201 can return to the oil return tank in through accuse oil return passageway 106 and accuse fuel tap 41 to the realization is to the recovery of fluid, and when accuse fuel tap 41 closed, the fluid in the pressure regulating chamber 201 increased, makes the pressure of pressure regulating chamber 201 upper end rise, and pressure regulating subassembly 3 and nozzle housing 2 butt, and inlet channel 101 and fumarole 202 are in isolated state this moment.
As shown in fig. 4, the pressure regulating assembly 3 of the present embodiment includes an elastic member 31 and a nozzle coupling sleeve 32, the elastic member 31 is a spring, the elastic member 31 and the nozzle coupling sleeve 32 are all sleeved on the valve body, the nozzle coupling sleeve 32 is in clearance fit with the valve body and the nozzle sleeve 2 respectively, one end of the elastic member 31 abuts against the valve body, the other end of the elastic member 31 abuts against one end of the nozzle coupling sleeve 32, the other end of the nozzle coupling sleeve 32 abuts against the nozzle sleeve 2, the nozzle coupling sleeve 32 is in clearance fit with the valve body and the nozzle sleeve 2 respectively, and the nozzle coupling sleeve 32 can abut against the nozzle sleeve 2 to isolate the air injection hole 202 from the air inlet channel 101.
Specifically, the elastic coefficient of the spring of this embodiment is 10N/mm, and after the elastic member 31 and the nozzle coupling sleeve 32 are installed in the pressure regulating cavity 201, the spring is in a compressed state, and the pretightening force of the spring is 40N, so as to ensure that a proper opening pressure exists when the air injection hole 202 is communicated with the air inlet channel 101. Of course, in other embodiments of the present invention, the elastic coefficient and the pre-tightening force of the spring are not limited to the limitations of the embodiment, and may also be other values, specifically related to the pressure of the injected gas, when the pressure of the gas is higher, the elastic coefficient and the pre-tightening force of the spring may be appropriately increased, and when the pressure of the gas is lower, the elastic coefficient and the pre-tightening force of the spring may be appropriately decreased, specifically set according to actual requirements.
Further, the nozzle coupling sleeve 32 and the third valve body 13 of the present embodiment form a first couple, the outer diameter of the first couple is 7mm, the length of the first couple is 5mm, and the gap between the nozzle coupling sleeve 32 and the third valve body 13 is 2 μm-4 μm. The nozzle coupling sleeve 32 and the nozzle sleeve 2 form a second matching part, the outer diameter of the second matching part is 9mm, the length of the second matching part is 5.5mm, and the gap between the nozzle coupling sleeve 32 and the nozzle sleeve 2 is 2-4 μm.
The terminal surface of the nozzle coupling cover 32 and the elastic component 31 butt of this embodiment is first ring, and the nozzle coupling cover 32 can be the second ring with the terminal surface of valve body butt, and fumarole 202 is located the middle part of second ring, and the area of first ring is greater than the area of second ring. Specifically, the width of the first ring is 1mm, and the width of the second ring is 0.6 mm. The nozzle coupling sleeve 32 is a heat-conducting nozzle coupling sleeve, that is, the nozzle coupling sleeve 32 is made of a heat-conducting material, and the nozzle coupling sleeve 32 can conduct heat so that oil in the pressure regulating cavity 201 can absorb heat of the nozzle coupling sleeve 32, so that the nozzle coupling sleeve 32 is cooled.
Specifically, the temperature of the nozzle coupling sleeve 32 is reduced because the oil can carry away some of the heat of the nozzle coupling sleeve 32. When gas is injected, the gas is combusted in the combustion chamber to release a large amount of heat, and the good heat conductivity of the nozzle coupling sleeve 32 is benefited, so that partial heat in the combustion chamber is transferred to the nozzle coupling sleeve 32, and part of heat of the nozzle coupling sleeve 32 can be taken out by the oil liquid flowing in a circulating mode, namely, the oil liquid takes away partial heat generated by the combustion chamber, and the heat load under a gas combustion working mode is reduced.
As shown in fig. 1, the fast-response dual fuel injection valve of the present embodiment further includes an injection valve 42 and a valve stem 43, and the injection valve 42 is a solenoid valve. As shown in fig. 4, an oil cavity 103, an oil injection hole 104 and an oil injection passage 105 are arranged on the valve body, the oil cavity 103 is arranged along the axial direction of the valve body, the oil injection passage 105 is arranged on the upper portion of the valve body, the oil injection hole 104 is arranged on the bottom of the valve body, the oil injection hole 104 and the oil injection passage 105 are respectively communicated with the oil cavity 103, the valve rod 43 is arranged in the oil cavity 103, one end of the valve rod 43 is connected with the oil injection valve 42, and the other end can. The number of nozzle opening 104 of this embodiment is a plurality of, and the equidistant distribution of circumference of valve body is followed to a plurality of nozzle opening 104, and nozzle opening 104 and oil spout oil duct 105 are isolated when valve rod 43 and valve body butt, and nozzle opening 104 and oil spout oil duct 105 communicate when valve rod 43 and valve body separation.
Specifically, a first inclined plane is arranged on the valve body, and a second inclined plane matched with the first inclined plane is arranged on the valve rod 43. When the valve rod 43 abuts against the valve body, the first inclined surface and the second inclined surface are abutted, the oil injection hole 104 and the oil injection oil duct 105 are in a disconnected state, and at the moment, the dual-fuel injection valve cannot inject combustible oil into the combustion chamber. When the fuel injection valve 42 controls the valve rod 43 to move upwards, the first inclined surface is separated from the second inclined surface, the fuel injection hole 104 is communicated with the fuel injection oil channel 105 through the oil cavity 103, and the dual-fuel injection valve can inject combustible oil into the combustion chamber.
The fast-response dual fuel injection valve of the present embodiment injects the combustible oil injected into the combustion chamber as diesel, and specifically the operation process of the fast-response dual fuel injection valve is as follows:
step one, an oil injection valve 42 is opened, the oil injection valve 42 drives a valve rod 43 to move upwards, a first inclined surface of a valve body is separated from a second inclined surface of the valve rod 43, diesel oil enters an oil cavity 103 through an oil injection oil duct 105 and then is injected into a combustion chamber through an oil injection hole 104, and the diesel oil is combusted in an environment with high pressure;
step two, the oil injection valve 42 is closed, when the oil control valve 41 is powered on, the oil control valve 41 is in an open state, oil liquid in the pressure regulating cavity 201 can enter an oil return tank through the oil control oil return passage 106 and the oil control valve 41 in sequence, at the moment, the pressure in the pressure regulating cavity 201 is reduced, gas reaches the communicating groove 203 at the bottom of the nozzle sleeve 2 through the air inlet passage 101, so that the acting force of the gas on the nozzle sleeve 2 is increased, correspondingly, the reaction force borne by the nozzle coupling sleeve 32 is increased, the nozzle coupling sleeve 32 overcomes the pre-tightening force of the elastic piece 31 and moves upwards, the nozzle coupling sleeve 32 is gradually separated from the nozzle sleeve 2, the air inlet passage 101 is communicated with the air injection hole 202, the gas is injected into a combustion chamber through the air injection hole 202, and the combusted diesel oil in the combustion chamber can rapidly ignite the gas to complete the;
and step three, when the oil control valve 41 is powered off, the oil control valve 41 is in a closed state, the oil control oil return passage 106 is cut off, the pressure of the upper part in the pressure regulating cavity 201 gradually rises, the pressure of the oil on the nozzle coupling sleeve 32 gradually increases, the nozzle coupling sleeve 32 gradually moves downwards, the nozzle coupling sleeve 32 is contacted with the nozzle sleeve 2, so that the residual quantity of the gas in the pressure regulating cavity 201 is basically zero, the gas orifice 202 is disconnected from the gas inlet passage 101, and the gas injection is finished.
The first step to the third step are a cycle process of the fast response dual fuel injection valve, that is, the dual fuel injection valve firstly injects diesel oil into the combustion chamber, then injects gas into the combustion chamber, then injects diesel oil into the combustion chamber, then injects gas into the combustion chamber, and the cycle is repeated.
It should be noted that the pressure of the diesel and the pressure of the gas injected by the fast-response dual-fuel injection valve of the present embodiment can be selected according to the actual needs of the user, and the applicability is strong. In other embodiments, the combustible oil injected by the dual-fuel injection valve is not limited to the diesel oil in the embodiment, and may be other oil, specifically according to actual needs.
Because the pressure of the injected gas is not changed, the deformation amount of the elastic element 31 compressed is relatively fixed when the gas is injected each time, namely the ascending distance of the nozzle coupling sleeve 32 is a fixed value, so that the lower end of the nozzle coupling sleeve 32 is in the same position when the dual-fuel injection valve injects the gas, and the injection consistency is ensured.
The quick response's of this embodiment dual fuel injection valve structural arrangement is more reasonable, a plurality of gas groove 2032 that adds has increased the removal speed of pressure regulating subassembly 3, the injection effect of quick response's dual fuel injection valve has been strengthened, heat conduction type nozzle coupling cover has reduced the heat load under the gas combustion mode of operation, it is comparatively steady to the working process's of the working mode of spraying gaseous working mode the switching by the working mode of spraying diesel oil, nozzle coupling cover 32, the structure setting of nozzle cover 2 and valve body, make gaseous residual volume in pressure regulating cavity 201 be zero basically, make this quick response's dual fuel injection valve's structure more excellent, it is better to spray the effect.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A fast response dual fuel injection valve comprising:
the air inlet valve comprises a valve body, wherein an air inlet channel (101) is arranged on the valve body;
the nozzle sleeve (2) is sleeved at one end of the valve body, the nozzle sleeve (2) and the valve body define a pressure regulating cavity (201), an air injection hole (202) and a communication groove (203) are formed in the nozzle sleeve (2), the communication groove (203) is communicated with the air inlet channel (101), the communication groove (203) comprises an annular groove (2031) and a plurality of air grooves (2032) distributed at intervals, the air grooves (2032) are communicated with the annular groove (2031), and the air grooves (2032) extend outwards along the circumferential direction of the annular groove (2031);
pressure regulating subassembly (3), pressure regulating subassembly (3) are located in pressure regulating chamber (201), pressure regulating subassembly (3) with during the tip butt of nozzle cover (2) fumarole (202) with admission passage (101) are isolated, admission passage (101) let in when gaseous pressure regulating subassembly (3) can for nozzle cover (2) remove so that admission passage (101) with fumarole (202) intercommunication, gas groove (2032) can increase gas is right the area of action of nozzle cover (2), thereby increase gas is right the thrust of pressure regulating subassembly (3).
2. The fast response dual fuel injection valve of claim 1, characterized in that the gas grooves (2032) are equally spaced along the circumference of the annular groove (2031), and the gas injection holes (202) are provided between two adjacent gas grooves (2032).
3. The fast response dual fuel injection valve of claim 1 wherein the gas groove (2032) is a sector annular groove.
4. The dual fuel injection valve with rapid response of claim 1, further comprising an oil control valve (41), wherein the valve body is provided with an oil control inlet passage (102) and an oil control return passage (106) which are respectively communicated with the pressure regulating cavity (201), the oil control inlet passage (102) is communicated with an oil return tank, oil in the oil return tank can sequentially enter the pressure regulating cavity (201) through an oil control connecting piece (44) and the oil control inlet passage (102), and the oil control valve (41) is arranged on the oil control return passage (106).
5. The dual fuel injection valve with rapid response according to any one of claims 1 to 4, wherein the pressure regulating assembly (3) comprises an elastic member (31) and a nozzle coupling sleeve (32), one end of the elastic member (31) abuts against the valve body, the other end of the elastic member (31) abuts against one end of the nozzle coupling sleeve (32), the other end of the nozzle coupling sleeve (32) abuts against the nozzle sleeve (2), the nozzle coupling sleeve (32) is in clearance fit with the valve body and the nozzle sleeve (2) respectively, and the nozzle coupling sleeve (32) can abut against the nozzle sleeve (2) to isolate the gas injection hole (202) from the air inlet channel (101).
6. The fast responding dual fuel injection valve according to claim 5, characterized in that the end surface of the nozzle coupling sleeve (32) abutting the spring (31) is a first circular ring, the end surface of the nozzle coupling sleeve (32) capable of abutting the valve body is a second circular ring, and the area of the first circular ring is larger than the area of the second circular ring.
7. The fast response dual fuel injection valve as recited in claim 5 wherein the nozzle coupling sleeve (32) is a thermally conductive nozzle coupling sleeve.
8. The quick response dual fuel injection valve as claimed in any one of claims 1 to 4, further comprising an oil injection valve (42) and a valve rod (43), wherein an oil cavity (103), an oil injection hole (104) and an oil injection passage (105) are formed in the valve body, the oil injection hole (104) and the oil injection passage (105) are respectively communicated with the oil cavity (103), the valve rod (43) is arranged in the oil cavity (103), one end of the valve rod (43) is connected with the oil injection valve (42), the other end of the valve rod can abut against the valve body, the oil injection hole (104) is isolated from the oil injection passage (105) when the valve rod (43) abuts against the valve body, and the oil injection hole (104) is communicated with the oil injection passage (105) when the valve rod (43) is separated from the valve body.
9. The fast response dual fuel injection valve as recited in claim 8 wherein a first ramp is provided on the valve body and a second ramp is provided on the valve stem (43) that mates with the first ramp.
10. The fast response dual fuel injection valve of claim 8 wherein the fuel injection orifices (104) are located at an end of the valve body, the number of fuel injection orifices (104) is several, and the several fuel injection orifices (104) are equally spaced along a circumference of the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010478509.2A CN111535955B (en) | 2020-05-29 | 2020-05-29 | Quick-response dual-fuel injection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010478509.2A CN111535955B (en) | 2020-05-29 | 2020-05-29 | Quick-response dual-fuel injection valve |
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| Publication Number | Publication Date |
|---|---|
| CN111535955A CN111535955A (en) | 2020-08-14 |
| CN111535955B true CN111535955B (en) | 2021-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010478509.2A Active CN111535955B (en) | 2020-05-29 | 2020-05-29 | Quick-response dual-fuel injection valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112065593B (en) * | 2020-09-03 | 2022-06-10 | 一汽解放汽车有限公司 | Dual-fuel injector and internal combustion engine |
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| GB2270346A (en) * | 1992-09-05 | 1994-03-09 | Lucas Ind Plc | I.C.engine dual fuel injection unit |
| JPH0874698A (en) * | 1994-09-12 | 1996-03-19 | Mitsubishi Heavy Ind Ltd | Binary injection valve of diesel engine |
| CN101117931A (en) * | 2007-09-04 | 2008-02-06 | 中国计量学院 | Double-layer injection fuel oil injector used for diesel oil and dimethyl ether |
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| CN111535955A (en) | 2020-08-14 |
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