Oil-saving oil injector assembly

Abstract

The utility model discloses an oil-saving type oil injector assembly which comprises an oil injector head, an oil injector body and an oil injection assembly, the oil injector head is fixedly installed at the top of the oil injector body, the oil injection assembly is arranged at the bottom end of the oil injector body, and an oil return cavity and an oil inlet channel are formed in the oil injector head. By arranging the rotating head, the oil distributing pipe, the oil spraying nozzle and other assemblies, high-pressure fuel oil enters the rotating head, passes through the oil distributing pipe and then is sprayed out of the oil spraying nozzle, the high-pressure fuel oil can exert acting force in the opposite direction on the oil distributing pipe when being sprayed out of the oil spraying nozzle, and the oil distributing pipe can push the rotating head to rotate on the outer side wall of the connecting nozzle; the fuel injection direction continuously changes along with rotation, the centrifugal force generated by rotation can throw the injected fuel to the periphery, the fuel atomization effect is better, the whole engine cylinder barrel can be filled with the fuel, the fuel combustion efficiency is high, waste caused by insufficient combustion is avoided, and fuel saving is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel injector assemblies, in particular to a fuel-saving fuel injector assembly. Background Art

[0002] Common rail injector is a new type of fuel injection system, which is mainly composed of injector body, injection nozzle, support, spring, etc. During the operation of the engine, the injector is responsible for spraying high-pressure fuel into the engine cylinder for combustion, thereby driving the piston to reciprocate.

[0003] In the prior art, the fuel injector directly sprays high-pressure fuel into the engine cylinder, but the sprayed fuel has poor atomization effect and a single spray angle, resulting in poor fuel combustion efficiency, incomplete combustion, and fuel waste. Utility Model Content

[0004] The technical problem to be solved by the utility model is that in the prior art, the fuel injector directly sprays high-pressure fuel into the engine cylinder, but the sprayed fuel has poor atomization effect and a single spray angle, resulting in poor fuel combustion efficiency, inability to fully burn, and causing fuel waste.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a fuel-saving fuel injector assembly, including a fuel injector head, a fuel injector body and a fuel injection assembly, the fuel injector head is fixedly installed on the top of the fuel injector body, the fuel injection assembly is arranged at the bottom of the fuel injector body, an oil return chamber and an oil inlet passage are provided inside the fuel injector head, a lifting chamber is provided at one end of the oil inlet passage, an opening connected to the lifting chamber is provided at the bottom of the fuel return chamber, an oil return control assembly is provided inside the fuel return chamber, a valve body is fixedly connected inside the fuel injector body, an oil delivery passage and a piston chamber are provided inside the valve body, the oil delivery passage is connected to the oil inlet passage, the piston chamber is connected to the lifting chamber, a needle valve chamber is provided at the bottom of the piston chamber, the needle valve chamber is respectively connected to the oil delivery passage and the piston chamber, an inner side wall of the needle valve chamber is slidably connected to a needle valve plug, a piston column is fixedly connected to the top of the needle valve plug, and the top end of the piston column slides through the piston chamber and extends to the inside of the lifting chamber;

[0006] The fuel injection assembly includes a rotating head, a connecting nozzle is fixedly connected to the bottom end of the fuel injector body, the outer wall of the needle valve plug is tightly against the inner wall of the connecting nozzle, the rotating head is sleeved on the outside of the connecting nozzle, and a plurality of oil distribution pipes are fixedly connected around the outer surface of the rotating head. A plurality of mounting grooves are provided on the outer surfaces of the plurality of oil distribution pipes at a downward angle of 45 degrees, and fuel injection nozzles are fixedly installed inside the plurality of mounting grooves. Spraying fuel at a downward angle of 45 degrees can generate a reaction force, thereby driving the rotating head to rotate.

[0007] Preferably, the inner side wall of the rotating head and the outer side wall of the connecting nozzle are rotatably connected, and the reaction force generated by the fuel injector when injecting fuel can drive the rotating head to rotate outside the connecting nozzle to change the fuel injection direction.

[0008] Preferably, the oil return control assembly includes an electromagnetic coil, which is fixedly connected to the inner top of the oil return chamber, and a first spring is fixedly connected to the inner top of the oil return chamber and located at the center of the electromagnetic coil, and a slide is fixedly connected to the bottom end of the first spring, and the outer wall of the slide is slidably connected to the inner wall of the electromagnetic coil, and an armature is fixedly connected to the bottom of the slide, and a blocking block is fixedly connected to the bottom of the armature, and the blocking block is tightly pressed against an opening formed at the bottom of the oil return chamber. When the electromagnetic coil is energized, it can generate an attraction on the armature to cause the armature to rise.

[0009] Preferably, the outer sleeve of the piston column is provided with a second spring, the top end of the second spring is fixedly connected to the inner top of the needle valve chamber, and the bottom end of the second spring is fixedly connected to the top of the needle valve plug. When the block blocks the opening at the bottom of the return oil chamber, the pressure in the lifting chamber increases, and the rebound of the second spring can cause the needle valve plug to block the connecting nozzle.

[0010] Preferably, a plurality of oil return holes are formed around and through the bottom of the slide plate, and an oil return pipe is fixedly connected to the top of the injector head.

[0011] Preferably, an oil inlet pipe is fixedly connected to one side of the surface of the injector head.

[0012] The beneficial effects of the utility model are as follows:

[0013] The utility model provides components such as a rotating head, an oil distribution pipe and a fuel injection nozzle. High-pressure fuel enters the rotating head and passes through the oil distribution pipe before being ejected from the fuel injection nozzle. When the high-pressure fuel is ejected from the fuel injection nozzle, it exerts a force in the opposite direction on the oil distribution pipe. The oil distribution pipe can push the rotating head to rotate on the outer wall of the connecting nozzle. The fuel injection direction changes continuously with the rotation. The centrifugal force generated by the rotation can also throw the ejected fuel to the surroundings. The fuel atomization effect is better, the fuel can fill the entire engine cylinder, the fuel combustion efficiency is high, and waste caused by insufficient combustion is avoided, thereby achieving fuel saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of a fuel-saving fuel injector assembly of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of a fuel-saving fuel injector assembly of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the position of the fuel injection component of a fuel-saving fuel injector assembly of the utility model;

[0017] Figure 4 The utility model is a bottom view of the slide plate position of a fuel-saving fuel injector assembly.

[0018] In the figure: 1. injector head; 2. injector body; 3. injection assembly; 301. rotating head; 302. oil distribution pipe; 303. mounting groove; 304. injection nozzle; 4. return oil chamber; 5. oil inlet passage; 6. lifting chamber; 7. valve body; 8. oil delivery passage; 9. piston chamber; 10. needle valve chamber; 11. needle valve plug; 12. piston rod; 13. connecting nozzle; 14. electromagnetic coil; 15. first spring; 16. slide plate; 1601. oil return hole; 17. armature; 18. block; 19. second spring; 20. return oil pipe; 21. oil inlet pipe. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0020] See also Figures 1 to 3 A fuel-saving fuel injector assembly includes a fuel injector head 1, a fuel injector body 2 and a fuel injection assembly 3. The fuel injector head 1 is fixedly mounted on the top of the fuel injector body 2, and the fuel injection assembly 3 is arranged at the bottom of the fuel injector body 2. An oil return chamber 4 and an oil inlet passage 5 are provided inside the fuel injector head 1. A lifting chamber 6 is provided at one end of the oil inlet passage 5. An opening connected to the lifting chamber 6 is provided at the bottom of the fuel return chamber 4. An oil return control assembly is provided inside the fuel return chamber 4. A valve body 7 is fixedly connected inside the fuel injector body 2. An oil delivery passage 8 and a piston chamber 9 are provided inside the valve body 7. The oil delivery passage 8 is connected to the oil inlet passage 5, and the piston chamber 9 is connected to the lifting chamber 6. A needle valve chamber 10 is provided at the bottom of the piston chamber 9. ， The needle valve chamber 10 is connected to the oil delivery channel 8 and the piston chamber 9 respectively. The inner wall of the needle valve chamber 10 is slidably connected with a needle valve plug 11. The top of the needle valve plug 11 is fixedly connected with a piston rod 12. The top of the piston rod 12 slides through the piston chamber 9 and extends to the inside of the lifting chamber 6.

[0021] The fuel injection assembly 3 includes a rotating head 301, and the bottom end of the fuel injector body 2 is fixedly connected to the connecting nozzle 13, the outer wall of the needle valve plug 11 is tightly against the inner wall of the connecting nozzle 13, and the rotating head 301 is sleeved on the outside of the connecting nozzle 13. A plurality of oil distribution pipes 302 are fixedly connected around the outer surface of the rotating head 301, and a plurality of mounting grooves 303 are provided on the outer surfaces of the plurality of oil distribution pipes 302 at a downward angle of 45 degrees. A fuel injection nozzle 304 is fixedly installed inside the plurality of mounting grooves 303. Spraying fuel at a downward angle of 45 degrees can generate a reaction force, thereby driving the rotating head 301 to rotate.

[0022] like Figures 1 to 4As shown, an oil inlet pipe 21 is fixedly connected to one side of the surface of the injector head 1, a plurality of oil return holes 1601 are opened around and through the bottom of the slide plate 16, an oil return pipe 20 is fixedly connected to the top of the injector head 1, a second spring 19 is sleeved on the outside of the piston column 12, the top of the second spring 19 is fixedly connected to the inner top of the needle valve chamber 10, and the bottom of the second spring 19 is fixedly connected to the top of the needle valve plug 11. When the block 18 blocks the opening at the bottom of the oil return chamber 4, the pressure at the lifting chamber 6 increases, and the rebound of the second spring 19 can make the needle valve plug 11 block the connecting nozzle 13. The oil return control component includes an electromagnetic coil 14, which is fixedly connected to the inner top of the oil return chamber 4. A first spring 15 is fixedly connected to the inner top and at the center of the electromagnetic coil 14, and a slide plate 16 is fixedly connected to the bottom end of the first spring 15. The outer wall of the slide plate 16 is slidably connected to the inner wall of the electromagnetic coil 14, and an armature 17 is fixedly connected to the bottom of the slide plate 16. A blocking block 18 is fixedly connected to the bottom of the armature 17, and the blocking block 18 is tightly pressed against the opening at the bottom of the oil return chamber 4. When the electromagnetic coil 14 is energized, an attraction is generated on the armature 17 to make the armature 17 rise. The inner wall of the rotating head 301 is rotatably connected to the outer wall of the connecting nozzle 13. The reaction force generated when the fuel injector 304 injects fuel can drive the rotating head 301 to rotate outside the connecting nozzle 13 to change the direction of fuel injection.

[0023] When the utility model is in use, high-pressure fuel is introduced from the fuel inlet pipe 21, and the electromagnetic coil 14 is energized to generate magnetism, which adsorbs the armature 17, and the block 18 is separated from the opening at the bottom of the oil return chamber 4. The fuel can flow from the opening into the oil return chamber 4 and out through the oil return pipe 20. At this time, the oil pressure at the lifting chamber 6 is reduced, and the pressure in the needle valve chamber 10 is greater than that in the lifting chamber 6. The high-pressure fuel lifts the needle valve plug 11, and the needle valve plug 11 is separated from the inner wall of the connecting nozzle 13. The high-pressure fuel can enter the rotating head 301 from the connecting nozzle 13. The high-pressure fuel flows through the oil distribution pipe 302 and is sprayed out from the fuel injector 304 which is tilted downward at 45 degrees. While being sprayed out, the high-pressure fuel will exert a force in the opposite direction on the oil distribution pipe 302. The oil distribution pipe 302 can drive the rotating head 301 which is rotatably connected to the outer wall of the connecting nozzle 13 to rotate, thereby changing the spray direction of the fuel injector 304. The centrifugal force generated by the rotation can also cause the sprayed high-pressure fuel to be thrown around, and the oil mist fills the entire engine cylinder, so that the fuel combustion efficiency is higher and the combustion is more complete, thereby avoiding fuel waste.

[0024] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A fuel-saving fuel injector assembly, comprising a fuel injector head (1), a fuel injector body (2) and a fuel injection assembly (3), characterized in that: The injector head (1) is fixedly mounted on the top of the injector body (2); the injection assembly (3) is arranged at the bottom of the injector body (2); an oil return chamber (4) and an oil inlet passage (5) are provided inside the injector head (1); a lifting chamber (6) is provided at one end of the oil inlet passage (5); an opening communicating with the lifting chamber (6) is provided at the bottom of the oil return chamber (4); an oil return control assembly is provided inside the oil return chamber (4); a valve body (7) is fixedly connected inside the injector body (2); an oil delivery passage (8) and a piston chamber (9) are provided inside the valve body (7); the oil delivery passage (8) is communicated with the oil inlet passage (5); the piston chamber (9) is communicated with the lifting chamber (6); a needle valve chamber (10) is provided at the bottom of the piston chamber (9) ， The needle valve chamber (10) is respectively connected to the oil delivery passage (8) and the piston chamber (9); the inner side wall of the needle valve chamber (10) is slidably connected to a needle valve plug (11); the top of the needle valve plug (11) is fixedly connected to a piston column (12); the top end of the piston column (12) slides through the piston chamber (9) and extends to the interior of the lifting chamber (6); The fuel injection assembly (3) comprises a rotating head (301), the bottom end of the fuel injector body (2) is fixedly connected to a connecting nozzle (13), the outer wall of the needle valve plug (11) is tightly abutted against the inner wall of the connecting nozzle (13), the rotating head (301) is sleeved on the outside of the connecting nozzle (13), a plurality of fuel distribution pipes (302) are fixedly connected around the outer surface of the rotating head (301), a plurality of mounting grooves (303) are provided on the outer surfaces of the plurality of fuel distribution pipes (302) at a downward inclination of 45 degrees, and fuel injection nozzles (304) are fixedly installed inside the plurality of mounting grooves (303).

2. A fuel-saving fuel injector assembly according to claim 1, characterized in that: The inner side wall of the rotating head (301) and the outer side wall of the connecting nozzle (13) are rotatably connected.

3. A fuel-saving fuel injector assembly according to claim 1, characterized in that: The oil return control assembly comprises an electromagnetic coil (14), the electromagnetic coil (14) is fixedly connected to the inner top of the oil return chamber (4), a first spring (15) is fixedly connected to the inner top of the oil return chamber (4) and located at the center of the electromagnetic coil (14), a slide plate (16) is fixedly connected to the bottom end of the first spring (15), an outer wall of the slide plate (16) is slidably connected to the inner wall of the electromagnetic coil (14), an armature (17) is fixedly connected to the bottom of the slide plate (16), a blocking block (18) is fixedly connected to the bottom of the armature (17), and the blocking block (18) is tightly abutted against an opening opened at the bottom of the oil return chamber (4).

4. A fuel-saving fuel injector assembly according to claim 1, characterized in that: The piston column (12) is externally sleeved with a second spring (19), the top end of the second spring (19) is fixedly connected to the inner top of the needle valve chamber (10), and the bottom end of the second spring (19) is fixedly connected to the top of the needle valve plug (11).

5. The fuel-saving fuel injector assembly according to claim 3 is characterized in that: A plurality of oil return holes (1601) are formed around and through the bottom of the slide plate (16), and an oil return pipe (20) is fixedly connected to the top of the injector head (1).

6. A fuel-saving fuel injector assembly according to claim 1, characterized in that: One side of the surface of the fuel injector head (1) is fixedly connected with an oil inlet pipe (21).

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