A fuel injection integrated control system

Abstract

The present invention relates to a fuel injection integrated control system, comprising: a fuel injector and an air-assisted injector, the air-assisted fuel injection integrated control system further comprising a composite chamber, and the fuel injector and the air-assisted injector are respectively fixedly connected to the composite chamber; wherein the fuel is injected through the fuel injector, and the gas is injected through the air-assisted injector in a mixed atomized manner. This fuel injection integrated control system realizes the injection effect of the fuel through the fuel injector, and realizes the injection effect of the air through the air-assisted injector, and the above-mentioned devices are integrated into one through the composite chamber, and the structure is stable.

Description

Technical Field

[0001] The present invention relates to the field of engines, and in particular to a fuel injection integrated control system. Background Art

[0002] Generally speaking, conventional fuel injectors deliver a certain amount of fuel into the cylinders of an engine. In order to improve combustion efficiency and reduce pollutants, the delivered fuel needs to be atomized. Fuel atomization can be achieved by supplying high-pressure fuel to conventional fuel injectors or by atomizing low-pressure fuel with pressurized gas, i.e., air-assisted fuel injection systems.

[0003] Low-pressure air-assisted injection technology uses the supersonic flow aerodynamic force of auxiliary air to overcome the surface tension of fuel droplets and promote fuel atomization. Therefore, it is insensitive to the type of fuel and can use fuels including gasoline, kerosene, light diesel, natural gas, etc., especially kerosene or light diesel fuel with a higher flash point. This is of great significance for special applications with fuel safety, engine size and weight requirements.

[0004] As we all know, compression ignition diesel engines are large in size and heavy in weight. Although the fuel is safe to use, they are not suitable for light aviation power, seaplane or motor airship power, sled power, home or portable auxiliary generator power, etc., which require fuel safety. This is especially true for certain military applications that emphasize compact engine size and light weight.

[0005] However, in the equipment in the prior art, the air-assisted injector and the fuel injector are mostly compressed and injected separately through pipelines. This form has a poor atomization effect. Therefore, it is necessary to provide a fuel injection integrated control system with good atomization effect. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a fuel injection integrated control system with good atomization effect.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a fuel injection integrated control system, including: a fuel injector and an air-assisted injector,

[0008] The air-assisted fuel injection integrated control system also includes a composite chamber, and

[0009] The fuel injector and the air-assisted injector are respectively fixedly connected to the composite chamber; wherein

[0010] The fuel is injected through the fuel injector, and the gas is injected through the air-assisted injector for mixed atomization.

[0011] Preferably, the fuel injector passes through the mixing chamber of the composite chamber and is fixed at the fuel chamber of the composite chamber, and the air-assisted injector is fixed in the mixing chamber;

[0012] The mixing chamber and the fuel chamber are communicated with each other.

[0013] Preferably, the air inlet is communicated with the mixing chamber;

[0014] The mixing chamber is L-shaped, and the annular barrel surrounding the fuel chamber is fixed at the corner of the mixing chamber. The nozzle of the fuel injector extends from the side wall of the barrel, and the oil outlet and the air inlet of the fuel chamber are staggered with each other.

[0015] Preferably, the air inlet is communicated with the transverse cavity of the mixing cavity, and the oil outlet is arranged on the bottom wall of the bin barrel.

[0016] Preferably, a bonding plate is fixed on the fuel injector;

[0017] The fuel injection integrated control system further comprises a left buckle plate, on which a left socket is provided;

[0018] A left ear plate is fixed on the composite bin at the outer edge of the fuel cavity, each of the left ear plates is provided with a left mating opening, and the fitting plate is pressed between the left buckle plate and the left ear plate; and

[0019] Each of the left sockets cooperates with one of the left matching ports and fixes the fuel injector in position by means of screws.

[0020] Preferably, the fuel injection integrated control system further comprises a right buckle plate, and a right socket is formed on the right buckle plate;

[0021] An air inlet pipe is fixed at the air inlet, and an air inlet joint is fixed on the outer wall of the air inlet pipe.

[0022] A right ear plate is fixed on the composite bin, each of the right ear plates is provided with a right mating opening, and the right buckle plate presses the air inlet connector onto the composite bin.

[0023] Preferably, the fuel injector sleeve is provided with a left-side sealing ring to seal the mixing chamber;

[0024] A partition seal ring is sleeved on the nozzle of the fuel injector to separate the mixing chamber and the fuel chamber;

[0025] The air-assisted ejector is sleeved with a lower abdominal sealing ring to seal the mixing chamber.

[0026] Preferably, a right-side sealing ring is sleeved on the air intake pipe to seal the connection port of the air intake pipe.

[0027] Preferably, the side wall of the composite bin is mirror-imaged with two mounting ears.

[0028] The beneficial effects of the present invention are:

[0029] The present invention provides such a fuel injection integrated control system, which realizes the fuel injection effect through the fuel injector, realizes the air injection effect through the air auxiliary injector, and combines the above-mentioned devices into one through the composite chamber, so that the structure is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0031] Figure 1 is a cross-sectional schematic diagram of a fuel injection integrated control system of the present invention;

[0032] Figure 2 is an exploded diagram of a fuel injection integrated control system of the present invention;

[0033] Figure 3 is a schematic cross-sectional view of a side view of a composite bin of the present invention;

[0034] Figure 4 is a schematic cross-sectional view of a top view of a composite bin of the present invention;

[0035] Figure 5 It is a three-dimensional schematic diagram of the composite warehouse of the present invention;

[0036] Figure 6 It is a schematic diagram of fuel and gas flow of a fuel injection integrated control system of the present invention;

[0037] In the figure:

[0038] Fuel injector 1, bonding plate 101;

[0039] Air-assisted ejector 2;

[0040] Composite bin 3, bin barrel 301, fuel chamber 302, mixing chamber 303, oil outlet 304, connecting port 305;

[0041] Left ear plate 306, left mating opening 3061;

[0042] Right ear plate 307, right matching opening 3071;

[0043] Mounting ears 308;

[0044] Inlet pipe 4, air inlet connector 401;

[0045] Left gusset plate 5, left socket 501;

[0046] Right buckle plate 6, right socket 601;

[0047] Left abdomen sealing ring 7, partition sealing ring 8, lower abdomen sealing ring 9, right abdomen sealing ring 10. DETAILED DESCRIPTION

[0048] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0049] like Figures 1 to 5 As shown, a fuel injection integrated control system includes: a fuel injector 1 and an air-assisted injector 2, the air-assisted fuel injection integrated control system also includes a composite chamber 3, and the fuel injector 1 and the air-assisted injector 2 are respectively fixedly connected to the composite chamber 3; wherein the fuel is injected through the fuel injector 1, and the gas is injected through the air-assisted injector 2 for mixed atomization.

[0050] This fuel injection integrated control system realizes the fuel injection effect through the fuel injector 1, realizes the air injection effect through the air auxiliary injector 2, and combines the above-mentioned devices into one through the composite chamber 3, so that the structure is stable.

[0051] Furthermore, the fuel injector 1 passes through the mixing chamber 303 of the composite chamber 3 and is fixed at the fuel chamber 302 of the composite chamber 3, and the air-assisted injector 2 is fixed in the mixing chamber 303; the mixing chamber 303 and the fuel chamber 302 are connected to each other.

[0052] The fuel chamber 302 is used to allow the fuel to enter, the mixing chamber 303 is used to allow the gas to enter, and the gas and fuel are mixed in the mixing chamber 303 .

[0053] Among them, because the mixing chamber 303 is set to be L-shaped, and the fuel injector 1 is transversely oriented to the transverse end of the L-shape, the air inlet is also oriented to the transverse end of the L-shape, that is, in the process of simultaneous air intake and oil intake, because the two directions are opposite, it is easy to cause impact between the air intake and the oil intake, thereby mutually reducing the pressure of the air intake and the oil intake, thereby reducing the atomization effect. In order to avoid the above problems to a certain extent, the following technical solutions are adopted:

[0054] The air inlet is communicated with the mixing chamber 303; the mixing chamber 303 is L-shaped, and the annular barrel 301 surrounding the fuel chamber 302 is fixed at the corner of the mixing chamber 303, the nozzle of the fuel injector 1 extends from the side wall of the barrel 301, and the oil outlet 304 of the fuel chamber 302 is staggered with the air inlet.

[0055] The oil outlet 304 and the air inlet are staggered to avoid mutual influence between the two. Specifically, the oil outlet 304 and the air inlet are staggered in the following technical solution:

[0056] The air inlet is connected to the transverse cavity of the mixing cavity 303, and the oil outlet 304 is arranged on the bottom wall of the bin barrel 301. The air inlet is sprayed horizontally, and the fuel is also sprayed horizontally. The horizontal spray of the gas first impacts the side wall of the bin barrel 301, and the side wall of the bin barrel 301 is a cylindrical surface, so it will scrape in the circumferential direction, thereby promoting the diffusion of the gas well. The fuel is sprayed in the fuel cavity 302, and enters the mixing cavity 303 through the vertical downward oil outlet 304, and then is well mixed with the diffused gas to achieve preliminary oil-gas mixing.

[0057] Furthermore, a bonding plate 101 is fixed on the fuel injector 1; the fuel injection integrated control system further comprises a left buckle plate 5, and a left socket 501 is formed on the left buckle plate 5;

[0058] A left ear plate 306 is fixed on the composite chamber 3 located at the outer edge of the fuel chamber 302, and each of the left ear plates 306 is provided with a left mating opening 3061. The fitting plate 101 is pressed between the left buckle plate 5 and the left ear plate 306; and each of the left sockets 501 cooperates with a left mating opening 3061 and the fuel injector 1 is positioned and fixed by screws.

[0059] The fitting plate 101 is pressed between the left buckle plate 5 and the left ear plate 306 , and the screws achieve a clamping effect, which can achieve good clamping and positioning, thereby fixing the fuel injector 1 .

[0060] Furthermore, the fuel injection integrated control system also includes a right buckle plate 6, which is provided with a right socket 601; an intake pipe 4 is fixed at the air inlet, and an intake connector 401 is fixed to the outer wall of the intake pipe 4; a right ear plate 307 is fixed on the composite chamber 3, and each right ear plate 307 is provided with a right mating port 3071, and the right buckle plate 6 presses the intake connector 401 onto the composite chamber 3.

[0061] Among them, the right buckle plate 6 presses the air intake connector 401 on the composite chamber 3, and the screws achieve the clamping effect, which can achieve good clamping positioning, thereby fixing the air intake pipe 4.

[0062] Furthermore, the fuel injector 1 is provided with a left-belly sealing ring 7 to seal the mixing chamber 303; a partition sealing ring 8 is provided on the nozzle of the fuel injector 1 to separate the mixing chamber 303 and the fuel chamber 302; and a lower-belly sealing ring 9 is provided on the air-assisted injector 2 to seal the mixing chamber 303.

[0063] The mixing chamber 303 is sealed and the fuel chamber 302 is separated from the mixing chamber 303 by the left abdominal sealing ring 7, the partition sealing ring 8 and the lower abdominal sealing ring 9, respectively, thereby ensuring the sealing of the overall equipment. The left abdominal sealing ring 7 and the lower abdominal sealing ring 9 can effectively prevent the leakage of fuel and gas, while the partition sealing ring 8 can effectively prevent the overflow of fuel.

[0064] Furthermore, a right abdominal sealing ring 10 is sleeved on the air inlet pipe 4 to seal the connection port 305 of the air inlet pipe 4. Two mounting ears 308 are mirror-imaged on the side wall of the composite chamber 3. The mounting ears 308 are provided to facilitate the connection with external equipment.

[0065] Working process:

[0066] like Figure 6 As shown, first, the gas enters from the air inlet at the air inlet pipe 4, then hits the barrel 301, and then quickly diffuses into the mixing chamber along the barrel 301, while the fuel is injected from the fuel injector 1 into the fuel chamber 302, and then ejected along the oil outlet 304 and enters the air-assisted injector 2. While entering, it entrains the gas entering the mixing chamber 303, and realizes secondary pressurized injection in the air-assisted injector 2.

[0067] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A fuel injection integrated control system, comprising: A fuel injector (1) and an air-assisted injector (2), characterized in that: The air-assisted fuel injection integrated control system further comprises a composite chamber (3), and The fuel injector (1) and the air-assisted injector (2) are respectively fixedly connected to the composite chamber (3); wherein The fuel is injected through the fuel injector (1) and the gas is injected through the air-assisted injector (2) for mixed atomization; The fuel injector (1) passes through the mixing chamber (303) of the composite chamber (3) and is fixed at the fuel chamber (302) of the composite chamber (3), and the air-assisted injector (2) is fixed in the mixing chamber (303); The mixing chamber (303) and the fuel chamber (302) are in communication with each other; The air inlet is in communication with the mixing chamber (303); The mixing chamber (303) is L-shaped, and an annular barrel (301) surrounding the fuel chamber (302) is fixed at a corner of the mixing chamber (303); the side wall of the barrel (301) is a cylindrical surface, and the nozzle of the fuel injector (1) extends from the side wall of the barrel (301); the oil outlet (304) of the fuel chamber (302) and the air inlet are staggered.

2. The fuel injection integrated control system according to claim 1, characterized in that: The air inlet is in communication with the transverse cavity of the mixing cavity (303), and the oil outlet (304) is arranged on the bottom wall of the bin barrel (301).

3. The fuel injection integrated control system according to claim 1, characterized in that: A bonding plate (101) is fixed on the fuel injector (1); The fuel injection integrated control system further comprises a left buckle plate (5), and a left socket (501) is formed on the left buckle plate (5); A left ear plate (306) is fixed on the composite bin (3) at the outer edge of the fuel cavity (302), each of the left ear plates (306) is provided with a left mating opening (3061), and the fitting plate (101) is pressed between the left buckle plate (5) and the left ear plate (306); and Each of the left insertion openings (501) cooperates with a left mating opening (3061) and positions and fixes the fuel injector (1) via screws.

4. The fuel injection integrated control system according to claim 2, characterized in that: The fuel injection integrated control system further comprises a right buckle plate (6), and a right socket (601) is formed on the right buckle plate (6); An air intake pipe (4) is fixed at the air intake port, and an air intake connector (401) is fixed on the outer wall of the air intake pipe (4). A right ear plate (307) is fixed on the composite bin (3), each of the right ear plates (307) is provided with a right mating opening, and the right buckle plate (6) presses the air inlet connector (401) onto the composite bin (3).

5. The fuel injection integrated control system according to claim 1, characterized in that: The fuel injector (1) is sleeved with a left-side sealing ring (7) to seal the mixing chamber (303); A partition seal ring (8) is sleeved on the nozzle of the fuel injector (1) to separate the mixing chamber (303) and the fuel chamber (302); The air-assisted ejector (2) is sleeved with a lower abdominal sealing ring (9) to seal the mixing chamber (303).

6. The fuel injection integrated control system according to claim 4, characterized in that: A right abdominal sealing ring (10) is sleeved on the air intake pipe (4) to seal the connection port (305) of the air intake pipe (4).

7. The fuel injection integrated control system according to any one of claims 1 to 6, characterized in that: The side wall of the composite bin (3) is mirror-imaged with two mounting ears (308).

Images