Self-balancing adjustable dual-channel oil-gas coupling low-pressure atomization common rail device

Abstract

The invention belongs to the technical field of special fuel combustion control of internal combustion engines, and particularly relates to a self-balancing adjustable double-channel oil-gas coupling low-pressure atomization common rail device which comprises a common rail pipe. The electromagnetic fuel injector is mounted in the fuel containing cavity; the electromagnetic compressed air ejector is mounted in the air containing cavity; the gas path sensor joint is inserted into the gas interface; the straight-through cooling water joint is connected with one end of the cooling channel; the bent cooling water joint is connected with the other end of the cooling channel; the oil pressure regulating device is mounted on the side surface of the common rail pipe; the air pressure regulating device is installed on the side face of the common rail pipe. Compressed air with a certain pressure value can be obtained by adjusting the air pressure adjusting device, then the compressed air is introduced into the oil pressure adjusting device, the oil pressure value based on the air pressure value is achieved, and then diesel oil is atomized and sprayed into a combustion chamber through the compressed air.

Description

Technical Field

[0001] The invention belongs to the technical field of special fuel combustion control for internal combustion engines, and in particular relates to a self-balancing and adjustable dual-channel oil-gas coupling low-pressure atomizing common rail device. Background Art

[0002] At present, with the progress of internal combustion engine technology and theoretical breakthroughs, the technical boundaries between the traditional gasoline engine and diesel engine combustion theory models have been broken. Whether the compression ratio of gasoline engine is 8:1-12:1 or the compression ratio of diesel engine is 16:1-22:1, it is difficult to meet the requirements of high power-to-weight ratio and high safety indicators in special applications. Spark-ignition diesel engine technology and lightweight technology are a hot topic in global internal combustion engine theoretical research. This technology can achieve oil-gas coupling at a lower fuel supply pressure, thereby improving the atomization effect of diesel, ensuring uniform ignition of diesel, improving diesel engine combustion efficiency, power, economy and power-to-weight ratio, and achieving diesel engine lightweighting.

[0003] The traditional electronically controlled diesel engine high-pressure supply system first extracts diesel from the fuel tank, passes through the coarse filter and fine filter, and then enters the injection pump. The fuel is pressurized to a predetermined high fuel pressure by the fuel high-pressure pump, and then the fuel is delivered to the high-pressure common rail pipe through the high-pressure oil pipe. After voltage stabilization and pressure regulation, the fuel is delivered to the injector through the high-pressure pipe for injection, and then the fuel is atomized. The high compression ratio compression ignition in the combustion chamber makes the diesel burn more fully. However, due to the high compression ratio, high explosion pressure, and high injection pressure, the engine structure strength must be increased, which will increase the requirements for the strength of the engine structure materials and the structural strength of the components, resulting in an overall increase in the engine weight and a decrease in the power-to-weight ratio. For a diesel engine that requires a high power-to-weight ratio, the above-mentioned high-pressure common rail device is difficult to meet the use requirements, mainly manifested in the following points: 1. A low-pressure injection diesel engine itself cannot provide high-temperature, high-pressure vortex intake and high compression ratio, which affects the full mixing and atomization of fuel and air and cannot be compressed and ignited; 2. The working pressure of the high-pressure common rail device is 160-200MPa. The structural strength requirements of the entire system are high, the weight is large, and the system is complex, which affects the power-to-weight ratio, reliability and lightweight characteristics of the engine. Summary of the invention The technical problem to be solved by the present invention is to provide a self-balancing and adjustable dual-channel oil-gas coupled constant-pressure atomization common rail device required for a low-pressure injection ignition three-cylinder diesel engine. The entire device is basically integrated on the dual-channel common rail. The device cleverly introduces air assistance and oil-gas coupling to achieve fully and evenly mixed atomization of low-pressure diesel and air for ignition. The device does not need to be equipped with structural parts required for high pressure, and while reducing the structural strength, it also greatly reduces the structural weight of the entire device, thereby meeting the high power-to-weight ratio requirements of the diesel engine, and the overall manufacturing cost is low.

[0005] The technical solution of the present invention is: a self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device, comprising: a common rail pipe, including an oil channel, a cooling channel, an air channel, an oil containing cavity, an air containing cavity, an A air intake channel, an A throttle valve installation port, an oil discharge port, an oil intake channel, an air pressure collection port, an air interface, a B throttle valve installation port, a B air intake channel and an air discharge port; An electromagnetic fuel injector is installed in the oil containing cavity; An electromagnetic compressed air ejector is installed in the air chamber; Gas path sensor connector, which is inserted into the gas interface; A straight cooling water joint, which is connected to one end of the cooling channel; A bent cooling water joint, which is connected to the other end of the cooling channel; The oil pressure regulating device is installed on the side of the common rail pipe; The air pressure regulating device is installed on the side of the common rail pipe.

[0006] As a preference, it also includes: Electromagnetic fuel injector straight pressing piece, the upper end of the electromagnetic fuel injector is pressed and connected with the electromagnetic fuel injector straight pressing piece; An electromagnetic compressed air ejector rubber pad is sleeved on the lower end of the electromagnetic compressed air ejector; Gas path sensor connector pressing piece: the upper end of the gas path sensor connector is pressed and connected with the gas path sensor connector pressing piece; Cooling water interface pressing piece, the straight cooling water joint and the bent cooling water joint are respectively pressed and connected with the cooling water interface pressing piece; The electromagnetic fuel injector bending and pressing piece, the lower end of the electromagnetic compressed air injector is pressed and connected with the electromagnetic fuel injector bending and pressing piece.

[0007] Preferably, the oil pressure regulating device comprises: Oil throttle valve; the oil throttle valve is installed in the throttle valve installation port A; The oil film is placed above the oil throttle valve; The oil pressure spring presses on the upper surface of the oil film; The oil pressure adjusting screw presses against the upper cover of the oil film spring; The oil film spring upper cover presses the upper end of the oil pressure spring; The upper cover of the oil pressure regulating device is pressed tightly against the side of the common rail pipe.

[0008] Preferably, the air pressure regulating device comprises: Air throttle valve, installed in the B throttle valve installation port; Air diaphragm, the upper end of the air throttle valve is covered with an air diaphragm; The gas pressure spring presses on the upper surface of the gas diaphragm; The air pressure regulating screw presses against the inner cavity of the upper cover of the air diaphragm spring; The upper cover of the air diaphragm spring presses the upper end of the air pressure spring; The upper cover of the air pressure regulating device is pressed tightly against the side of the common rail pipe; Preferably, the electromagnetic fuel injector is provided with an A sealing ring and a B sealing ring, and the electromagnetic compressed air injector is provided with a C sealing ring.

[0009] Preferably, an electric fuel pump is provided on one side of the common rail pipe, and the common rail pipe also includes an oil channel at one end connected to the outlet end of the electric fuel pump, and a compressed air pump is provided on one side of the air channel, and one end of the air channel is connected to the outlet end of the compressed air pump.

[0010] Preferably, the upper cover of the oil pressure regulating device includes an inner cavity, a B screw through hole, an air inlet cavity and a B pressure plane, and the upper cover of the air pressure regulating device includes an A pressure plane, a vent hole F and an A screw through hole.

[0011] Preferably, the air throttle valve comprises a cylindrical surface, an end surface and a throttle port.

[0012] Preferably, the air film comprises an elastic film, a lower pressure plate, a flat steel ball and an upper pressure plate; the lower pressure plate presses the elastic film onto the upper pressure plate; and the flat steel ball is spun into the inner cavity of the upper pressure plate.

[0013] Preferably, the upper cover of the air diaphragm spring includes a centering feature, a flange and a spring inner cavity surface; the upper cover of the air pressure regulating device includes an A pressure plane, a vent and a screw through hole; the A pressure plane presses the elastic diaphragm; the air pressure regulating screw passes through the A screw through hole and presses on the centering feature.

[0014] The present invention can achieve the following beneficial effects after adopting the above technical scheme: through a self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device provided by the scheme, suitable compressed air is introduced into the air channel, and then the oil outlet of the electric oil pump is connected to the oil channel, and then by adjusting the air pressure regulating device, compressed air with a certain pressure value can be obtained, and then the compressed air is introduced into the oil pressure regulating device, thereby realizing the oil pressure value based on the air pressure value, and then the compressed air is used to atomize the diesel and spray it into the combustion chamber.

[0015] The invention provides a self-balancing and adjustable dual-channel oil-gas coupled constant-pressure atomization common rail device required for a low-pressure injection ignition three-cylinder diesel engine, which can solve the problem that a low-pressure injection diesel engine itself cannot provide high-temperature, high-pressure vortex intake and high compression ratio, thereby affecting the problem that fuel and air cannot be fully mixed and atomized and cannot be compressed and ignited; at the same time, an oil pressure regulating device and an air pressure regulating device are installed on the side of the common rail, which can adjust the oil pressure and air pressure to the required values, and the oil film and the air film can absorb pressure fluctuations. The whole linkage pressure regulating device is simple and reliable, the structural weight and manufacturing cost of the low-pressure device are greatly reduced, and the cost of the whole device is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the assembly structure of a self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device of the present invention; Figure 2 It is a schematic diagram of the assembly structure of a self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device after the angle is changed; Figure 3 A schematic diagram of the common rail structure of a self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of a common rail pipe in a self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device of the present invention; Figure 5 It is a schematic diagram of the common rail pipe joint structure in a self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device of the present invention; Figure 6 It is a structural schematic diagram of an oil pressure regulating device in a self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device of the present invention; Figure 7 It is a structural schematic diagram of a gas pressure regulating device in a self-balancing and adjustable dual-channel oil-gas coupling low-pressure atomizing common rail device of the present invention; Figure 8 It is a schematic diagram of the structure of an air throttle valve in a self-balancing and adjustable dual-channel oil-gas coupling low-pressure atomizing common rail device of the present invention; Fig. 9 It is a schematic diagram of the structure of an air diaphragm in a self-balancing and adjustable dual-channel oil-gas coupling low-pressure atomizing common rail device of the present invention; Fig.10 It is a schematic diagram of the gas diaphragm spring upper cover structure in a self-balancing and adjustable dual-channel oil-gas coupling low-pressure atomizing common rail device of the present invention; Fig.11 It is a schematic diagram of the upper cover structure of a gas pressure regulating device in a self-balancing and adjustable dual-channel oil-gas coupling low-pressure atomizing common rail device of the present invention; Fig.12It is a structural schematic diagram of an upper cover of an oil pressure regulating device in a self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device of the present invention; Fig.13 The present invention is a schematic diagram of the three-dimensional installation structure of an electromagnetic fuel injector and an electromagnetic compressed air injector in a self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device.

[0017] In the figure: 1. Common rail pipe; 2. Electromagnetic fuel injector; 3. Electromagnetic fuel injector straight pressure piece; 4. Gas path sensor connector; 5. Straight cooling water connector; 6. Electromagnetic compressed air injector; 7. Electromagnetic compressed air injector rubber pad; 8. Gas path sensor connector pressure piece; 9. Electromagnetic fuel injector bent pressure piece; 10. Cooling water interface pressure piece; 11. Oil pressure regulating device; 12. Air pressure regulating device; 13. Bent cooling water connector; 1A. Oil channel; 1B. Cooling channel; 1C. Gas channel; 1D. Oil storage cavity; 1E. Air storage cavity; 1F. A air intake channel; 1G. A throttle valve installation port; 1H. Oil discharge port; 1I. Oil intake channel; 1J. Air pressure collection port; 1K. Gas interface; 1L. B throttle valve installation port; 1M. B air intake channel; 1N. Air discharge port; 2A. A sealing ring; 2B. B sealing ring; 6A. C sealing ring; 11 A, oil throttle valve; 11B, oil film; 11C, oil pressure spring; 11D, oil pressure adjusting screw; 11E, oil film spring upper cover; 11F, oil pressure regulating device upper cover; 12A, air throttle valve; 12B, air film; 12C, air pressure spring; 12D, air pressure adjusting screw; 12E, air film spring upper cover; 12F, air pressure regulating device upper cover; 11F1, inner cavity; 11F2, B screw through hole; 11F3, air bleed cavity; 11F4, B pressure plane; 12A1, cylindrical surface; 12A2, end face; 12A3, throttle; 12B1, elastic diaphragm; 12B2, lower pressure plate; 12B3, upper pressure plate; 12B4, flat steel ball; 12E1, self-aligning feature; 12E2, flange; 12E3, spring inner cavity surface; 12F1, A pressure plane; 12F2, vent hole; 12F3, screw through hole. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0019] Example: Figure 1-13 As shown, A self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device, comprising: The common rail pipe 1 includes an oil channel 1A, a cooling channel 1B, an air channel 1C, an oil containing cavity 1D, an air containing cavity 1E, an A air intake channel 1F, an A throttle valve installation port 1G, an oil discharge port 1H, an oil intake channel 1I, an air pressure collection port 1J, an air interface 1K, a B throttle valve installation port 1L, a B air intake channel 1M and an air discharge port 1N; The electromagnetic fuel injector 2 is installed in the oil containing chamber 1D; The electromagnetic compressed air ejector 6 is installed in the air chamber 1E; Gas path sensor connector 4, the gas path sensor connector 4 is inserted into the gas interface 1K; A straight cooling water connector 5, which is connected to one end of the cooling channel 1B; A bent cooling water connector 13, the bent cooling water connector 13 is connected to the other end of the cooling channel 1B; The oil pressure regulating device 11 is installed on the side of the common rail pipe 1; The air pressure regulating device 12 is installed on the side of the common rail pipe 1.

[0020] A self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device also includes: The electromagnetic fuel injector straight pressing piece 3, the upper end of the electromagnetic fuel injector 2 is pressed and connected by the electromagnetic fuel injector straight pressing piece 3; The electromagnetic compressed air ejector rubber pad 7 is sleeved on the lower end of the electromagnetic compressed air ejector 6; The upper end of the gas path sensor connector 4 is pressed and connected by the gas path sensor connector pressing piece 8; The cooling water interface pressing piece 10, the straight cooling water joint 5 and the bent cooling water joint 13 are respectively pressed and connected by the cooling water interface pressing piece 10; The electromagnetic fuel injector bending and pressing piece 9, the lower end of the electromagnetic compressed air injector 6 is pressed and connected with the electromagnetic fuel injector bending and pressing piece 9.

[0021] The oil pressure regulating device 11 comprises: Oil throttle valve 11A; Oil throttle valve 11A, installed in throttle valve installation port 1G of A; The oil film 11B is placed above the oil throttle valve 11A; The oil pressure spring 11C presses on the upper surface of the oil film 11B; The oil pressure adjusting screw 11D presses against the oil film spring upper cover 11E; The oil film spring upper cover 11E presses the upper end of the oil pressure spring 11C; The oil pressure regulating device upper cover 11F is pressed tightly against the side surface of the common rail pipe 1 .

[0022] The air pressure regulating device 12 comprises: The air throttle valve 12A is installed in the B throttle valve installation port 1L; The air film 12B is covered on the upper end of the air throttle valve 12A; The gas pressure spring 12C presses on the upper surface of the gas film 12B; The air pressure regulating screw 12D presses against the inner cavity of the upper cover 12E of the air diaphragm spring; The gas diaphragm spring upper cover 12E presses the upper end of the gas pressure spring 12C; The upper cover 12F of the air pressure regulating device is pressed tightly against the side surface of the common rail pipe 1 .

[0023] The electromagnetic fuel injector 2 is provided with an A seal ring 2A and a B seal ring 2B, and the electromagnetic compressed air injector 6 is provided with a C seal ring 6A.

[0024] The common rail pipe 1 also includes an oil channel 1A, one end of which is connected to the outlet of the electric fuel pump, and one side of the air channel 1C is provided with a connection to a compressed air pump, and one end of the air channel 1C is connected to the outlet of the compressed air pump.

[0025] The upper cover 11F of the oil pressure regulating device includes an inner cavity 11F1, a B screw through hole 11F2, an air inlet cavity 11F3 and a B pressure plane 11F4, and the upper cover 12F of the air pressure regulating device includes an A pressure plane 12F1, a vent hole 12F2 and an A screw through hole 12F3.

[0026] The air throttle valve 12A includes a cylindrical surface 12A1, an end surface 12A2, and a throttle port 12A3.

[0027] The air film 12B includes an elastic film 12B1, a lower pressing plate 12B2, a flat steel ball 12B4 and an upper pressing plate 12B3; the lower pressing plate 12B2 presses the elastic film 12B1 onto the upper pressing plate 12B3; the flat steel ball 12B4 is spun into the inner cavity of the upper pressing plate 12B3.

[0028] The upper cover 12E of the air diaphragm spring includes a centering feature 12E1, a flange 12E2 and a spring inner cavity surface 12E3; the upper cover 12F of the air pressure regulating device includes an A pressure plane 12F1, an air vent 12F2 and a screw through hole 12F3; the A pressure plane 12F1 presses the elastic diaphragm 12B1; the air pressure regulating screw 12D passes through the A screw through hole 12F3 and presses on the centering feature 12E1.

[0029] Working principle: There is an oil channel 1A on the common rail pipe 1, one end of which is connected to the outlet end of the electric fuel pump to introduce a certain pressure oil into the common rail pipe, and the other end of the oil channel is blocked with a plug; similarly, there is an air channel 1C on the common rail pipe 1, one end of which is connected to the outlet end of the compressed air pump to introduce a certain pressure compressed air into the common rail pipe, and the other end of the air channel is blocked with a plug; one end of the cooling channel 1B is connected to the straight cooling water joint 5, and the other end is connected to the bent cooling water joint 13; then the cooling water interface pressing sheet 10 is used to press the relevant joints at both ends of the common rail pipe 1 to prevent the oil pressure, air pressure and water pressure from opening the corresponding connecting parts. The electromagnetic fuel injector 2 is installed in the oil chamber 1D, and the upper end is pressed by the electromagnetic fuel injector straight pressure plate 3. One end of the electromagnetic compressed air injector 6 is installed in the air chamber 1E. The oil chamber 1D is connected to the oil channel 1A, and the air chamber 1E is connected to the air channel 1C. Then the A sealing ring 2A and the B sealing ring 2B, the oil chamber 1D and the oil channel 1A form an oil pressure chamber as a whole, so that the electromagnetic fuel injector 2 can accurately spray oil into the electromagnetic compressed air injector 6; the B sealing ring 2B and the C sealing ring 6A, the air channel 1C and the air chamber 1E form an air pressure chamber as a whole, so that the electromagnetic compressed air injector 6 can accurately spray the fuel, and the fuel injected by the electromagnetic fuel injector 2 inside is sprayed out in the form of air assistance, which greatly improves the atomization effect and realizes low-pressure diesel atomization. Then, the atomized oil-gas mixture is ignited by the ignition device, thereby solving the problem that the low-pressure injection diesel engine cannot provide high-temperature, high-pressure vortex intake and high compression ratio, resulting in the inability to fully atomize and mix the fuel and air and the inability to compress and ignite.

[0030] There is an installation position of the air pressure regulating device 12 on the side of the common rail pipe 1. The B throttle valve installation port 1L is interference fit with the cylindrical surface 12A1 on the air throttle valve 12A, and the end surface 12A2 is in contact with the flat steel ball 12B4 of the air diaphragm 12B, so that the lower part of the air diaphragm 12B forms a cavity with the air pressure collection port 1J and the B air intake channel 1M. The air path sensor connector 4 is inserted into the air interface 1K and is pressed with the air path sensor connector pressing piece 8 to facilitate the air pressure test. The throttle port 12A3 is connected to the air discharge port 1N, and the excess compressed air is discharged from here. The upper part of the air diaphragm 12B is equipped with an air pressure spring 12C and an air diaphragm spring upper cover 12E. The spring inner cavity surface 12E3 is installed in the spring, and the flange 12E2 is pressed on one end of the air pressure spring 12C, and then the air pressure is discharged. The upper cover 12F of the air pressure regulating device is pressed against the side of the common rail pipe 1 by screws to ensure that the A pressure plane 12F1 presses the elastic diaphragm 12B1, and the vent 12F2 is connected to the atmosphere. The air pressure regulating screw 12D passes through the A screw through hole 12F3 and presses on the centering feature 12E1, so that the compression amount of the regulating spring can be adjusted by the stroke of the air pressure regulating screw 12D, and combined with the effect of the throttle port 12A3, compressed air with a certain pressure is formed at the lower part of the air diaphragm 12B, and the air path sensor connector 4 collects the internal gas pressure value, so that the preset value of compressed air can be obtained. Since the upper part of the air diaphragm 12B is connected to the atmosphere, the value of the compressed air is a relative value to the atmospheric pressure.

[0031] There is an installation position for the oil pressure regulating device 11 on the side of the common rail pipe 1, such as Figure 6 As shown, the pressure regulating principle is similar to that of the gas pressure regulating device. The oil throttle valve 11A is installed in the A throttle valve installation port 1G, and the oil throttle valve hole is connected to the oil unloading port 1H to facilitate the unloading of excess diesel. The oil film 11B is placed above the oil throttle valve 11A, and the oil pressure spring 11C, the oil film spring upper cover 11D, and the oil pressure regulating device upper cover 11F are installed on it in sequence. The oil film 11B is compressed by using the B pressure plane 11F4, and the oil pressure adjusting screw 11E passes through the B screw through hole 11F2 to support the oil film spring upper cover 11D to compress the oil pressure spring 11C. Then the bottom of the oil film 11B is connected with the oil throttle valve 11A and the oil intake channel 1I to form a low-pressure oil chamber. Then the top of the oil film 11B forms a compressed air chamber with the A air intake channel 1F, the air inlet chamber 11F3, and the inner chamber 11F1. In this way, the oil pressure value based on the compressed air value can be adjusted by adjusting the oil pressure adjusting screw 11E.

[0032] Through the above-mentioned two pressure regulating devices, the oil pressure and air pressure can be adjusted to the required values, and the oil film and air film can absorb pressure fluctuations. The entire linked pressure regulating device is simple and reliable, and the structural weight of the low-pressure device is reduced. While greatly improving the power-to-weight ratio, the manufacturing cost of the device is greatly reduced.

[0033] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the essential features of the invention. The embodiments should therefore be considered in all respects as exemplary and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and range of equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0034] In summary, the above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. A self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device, characterized in that: include: The common rail pipe (1) comprises an oil passage (1A), a cooling passage (1B), an air passage (1C), an oil storage chamber (1D), an air storage chamber (1E), an A air intake passage (1F), an A throttle valve installation port (1G), an oil discharge port (1H), an oil intake passage (1I), an air pressure collection port (1J), an air interface (1K), a B throttle valve installation port (1L), a B air intake passage (1M) and an air discharge port (1N); An electromagnetic fuel injector (2) is installed in the oil containing chamber (1D); An electromagnetic compressed air ejector (6) is installed in the air chamber (1E); Gas path sensor connector (4), the gas path sensor connector (4) is inserted into the gas interface (1K); A straight cooling water joint (5), the straight cooling water joint (5) being connected to one end of the cooling channel (1B); A bent cooling water joint (13), the bent cooling water joint (13) being connected to the other end of the cooling channel (1B); An oil pressure regulating device (11) is installed on the side of the common rail pipe (1); The air pressure regulating device (12) is installed on the side of the common rail pipe (1).

2. The self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device according to claim 1 is characterized in that: Also includes: An electromagnetic fuel injector straight pressing piece (3), the upper end of the electromagnetic fuel injector (2) is pressed and connected with the electromagnetic fuel injector straight pressing piece (3); An electromagnetic compressed air ejector rubber pad (7), the lower end of the electromagnetic compressed air ejector (6) being sleeved with the electromagnetic compressed air ejector rubber pad (7); A gas path sensor connector pressing piece (8), the upper end of the gas path sensor connector (4) is pressed and connected by the gas path sensor connector pressing piece (8); A cooling water interface pressing piece (10), wherein the straight cooling water joint (5) and the bent cooling water joint (13) are respectively pressed and connected by the cooling water interface pressing piece (10); The electromagnetic fuel injector bending and pressing piece (9) is used to press and connect the lower end of the electromagnetic compressed air injector (6) with the electromagnetic fuel injector bending and pressing piece (9).

3. The self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device according to claim 1 is characterized in that: The oil pressure regulating device (11) comprises: Oil throttle valve (11A); the oil throttle valve (11A) is installed in the throttle valve installation port A (1G); An oil film (11B) is placed above the oil throttle valve (11A); The oil pressure spring (11C) presses on the upper surface of the oil film (11B); The oil pressure adjusting screw (11D) presses against the upper cover (11E) of the oil film spring; The oil film spring upper cover (11E) presses the upper end of the oil pressure spring (11C); The upper cover (11F) of the oil pressure regulating device is pressed tightly against the side surface of the common rail pipe 1.

4. The self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device according to claim 1 is characterized in that: The air pressure regulating device (12) comprises: The air throttle valve (12A) is installed in the B throttle valve installation port (1L); An air diaphragm (12B), the upper end of the air throttle valve 12A is covered with an air diaphragm (12B); A gas pressure spring (12C) presses on the upper surface of the gas diaphragm (12B); The air pressure regulating screw (12D) presses against the inner cavity of the upper cover (12E) of the air diaphragm spring; The gas diaphragm spring upper cover (12E) presses the upper end of the gas pressure spring (12C); The upper cover (12F) of the air pressure regulating device is pressed tightly against the side of the common rail pipe 1.

5. The self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device according to claim 1 is characterized in that: The electromagnetic fuel injector (2) is provided with an A sealing ring (2A) and a B sealing ring (2B), and the electromagnetic compressed air injector (6) is provided with a C sealing ring (6A).

6. The self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device according to claim 1 is characterized in that: An electric fuel pump is arranged on one side of the common rail pipe (1), and the common rail pipe (1) further comprises an oil channel (1A) having one end connected to an outlet of the electric fuel pump, and an air channel (1C) having one end connected to a compressed air pump.

7. The self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device according to claim 4 is characterized in that: The upper cover (11F) of the oil pressure regulating device comprises an inner cavity (11F1), a B screw through hole (11F2), an air inlet cavity (11F3) and a B pressure plane (11F4); the upper cover (12F) of the air pressure regulating device comprises an A pressure plane (12F1), a vent hole (12F2) and an A screw through hole (12F3).

8. The self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device according to claim 4 is characterized in that: The air throttle valve (12A) comprises a cylindrical surface (12A1), an end surface (12A2) and a throttle port (12A3).

9. The self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device according to claim 4 is characterized in that: The air film sheet (12B) comprises an elastic film sheet (12B1), a lower pressing plate (12B2), a flat steel ball (12B4) and an upper pressing plate (12B3); the lower pressing plate (12B2) presses the elastic film sheet (12B1) onto the upper pressing plate (12B3); and the flat steel ball (12B4) is spun into the inner cavity of the upper pressing plate (12B3).

10. The self-balancing and adjustable dual-channel oil-gas coupled low-pressure atomizing common rail device according to claim 9, characterized in that: The upper cover (12E) of the air diaphragm spring includes a centering feature (12E1), a flange (12E2) and a spring inner cavity surface (12E3); the upper cover (12F) of the air pressure regulating device includes a pressure plane A (12F1), a vent hole (12F2) and a screw through hole (12F3); the pressure plane A (12F1) presses the elastic diaphragm (12B1); the air pressure regulating screw (12D) passes through the screw through hole A (12F3) and presses against the centering feature (12E1).

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