Premixing type turbocharger

Abstract

The invention relates to the technical field of turbochargers, and discloses a premixing type turbocharger and an exhaust pipe, an exhaust gas turbine is arranged at the front end of the exhaust pipe, a premixing assembly is arranged between the exhaust pipe and the exhaust gas turbine, an oil injection mechanism is arranged on the exhaust gas turbine, and the premixing assembly comprises a mixing cavity formed between the exhaust pipe and the exhaust gas turbine; the front end of the exhaust pipe penetrates through and is fixed with the rear side of the mixing cavity. The mixing cavity is additionally formed in the exhaust pipe, when engine exhaust gas is sprayed into the main output gas pipe from the exhaust pipe, low pressure can be generated in the mixing cavity due to the airflow effect, external air can enter the mixing cavity under the differential pressure effect, the air and the exhaust gas are premixed and then enter the main output gas pipe, and then the exhaust gas turbine is pushed; the introduction of the air can also be pressed in through a pressure air source, so that the air mixing amount is further increased, and the introduction of the air increases the total air flow in the exhaust gas turbine, so that the exhaust gas turbine can intervene in work under the condition of less exhaust gas flow.

Description

Technical Field

[0001] The present invention relates to the technical field of turbochargers, in particular to a premixed turbocharger. Background Art

[0002] The main function of a turbocharger is to increase the amount of air intake into the engine, thereby increasing the power and torque of the engine. It is actually an air compressor that increases the amount of air intake by compressing air. It uses the inertial force of the exhaust gas discharged by the engine to drive the turbine in the turbine chamber, and the turbine drives the coaxial impeller, which presses the air sent from the air filter pipe to increase the pressure and enter the cylinder. When the engine speed increases, the exhaust gas discharge speed and the turbine speed also increase synchronously, and the impeller compresses more air into the cylinder. The increase in air pressure and density can burn more fuel. By increasing the amount of fuel and adjusting the engine speed accordingly, the engine output power can be increased.

[0003] An existing cooling device for a turbocharger (Announcement No.: CN219932306U) has at least the following disadvantages: since the turbine uses engine exhaust as a power source, when the engine is in a low-speed operation stage, the exhaust volume is small and is insufficient to drive the turbocharger to generate sufficient auxiliary intake air. In addition, when the accelerator is stepped on to accelerate, the turbocharger can only be increased after the engine speed is increased, resulting in the engine intake volume not being able to be increased immediately in the initial stage of acceleration. The engine can only obtain a significant power increase after the turbine speed is increased, that is, turbine lag. For this reason, the present invention is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a premixed turbocharger.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A premixing turbocharger comprises an exhaust pipe, an exhaust gas turbine is arranged at the front end of the exhaust pipe, a premixing assembly is arranged between the exhaust pipe and the exhaust gas turbine, an oil injection mechanism is arranged on the exhaust gas turbine, the premixing assembly comprises a mixing chamber arranged between the exhaust pipe and the exhaust gas turbine, the front end of the exhaust pipe and the rear side of the mixing chamber are penetrated and fixed, an adjustable non-powered air supply pipe is also penetrated and fixed on the rear side of the mixing chamber, the exhaust gas inlet end of the exhaust gas turbine is connected to the total output air pipe, and the total output air pipe is penetrated and fixed to the front side of the mixing chamber.

[0007] As a further solution of the present invention, the exhaust pipe and the adjustable non-powered air supply pipe are arranged side by side in the same direction, and a pressurizing pipe is fixed to one end of the exhaust pipe extending into the mixing chamber, and the pressurizing pipe is wide at both ends and narrow in the middle.

[0008] As a further solution of the present invention, an electromagnetic valve is fixed at one end of the adjustable non-powered air supply pipe away from the mixing chamber, an extension elbow is fixed at one end of the electromagnetic valve, one end of the extension elbow is a trumpet-shaped structure, a filter is fixed inside the extension elbow, and the electromagnetic valve is controlled by the vehicle driving computer.

[0009] As a further solution of the present invention, one end of the total output air pipe extending into the mixing chamber is a trumpet-shaped structure, and the opening ends of the exhaust pipe and the adjustable unpowered air supply pipe both correspond to the positions of the trumpet-shaped opening of the total output air pipe.

[0010] As a further solution of the present invention, the exhaust gas turbine includes a driving casing, the exhaust gas inlet end of the exhaust gas turbine is located on the driving casing, an exhaust gas outlet end is arranged on the right side of the driving casing, a connecting casing is fixed on one side of the driving casing, a driven casing is fixed on the side of the connecting casing away from the driving casing, an air outlet end and an air inlet end are respectively arranged on the top surface and the right side of the driven casing, bearing seats are installed on both sides of the connecting casing, a driving shaft is arranged inside the connecting casing, both ends of the driving shaft are fixed to the inside of the bearing seat, and impellers are fixed on both ends of the driving shaft.

[0011] As a further solution of the present invention, the oil filling mechanism includes a lubricating oil tank fixed on the outer wall of the connecting casing, an input cylinder is fixed inside the lubricating oil tank, one end of the input cylinder extends through and into the interior of the connecting casing, an oil delivery rod is slidably arranged inside the input cylinder, an oil inlet groove is provided on the outer wall of the oil delivery rod, and oil delivery pipes are fixedly connected to the left and right sides of the input cylinder respectively.

[0012] As a further solution of the present invention, the middle section of the drive shaft is a U-shaped structure, and the oil delivery rod extends to one end connected to the inside of the casing and is rotatably connected to the U-shaped structure of the drive shaft.

[0013] As a further solution of the present invention, the outer wall of the oil delivery rod is provided with connecting grooves at the front and rear of the oil inlet groove, and a rubber ring is fixed inside the connecting groove.

[0014] As a further solution of the present invention, a sealing cap is threadedly connected to the top surface of the lubricating oil tank.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] During the low-speed operation of the engine, the amount of exhaust gas discharged from the cylinder is small, which is not enough to drive the exhaust turbine to generate intake air with sufficient pressure. By adding a mixing chamber to the exhaust pipe, when the engine exhaust gas is sprayed from the exhaust pipe into the total output air pipe, low pressure will be generated in the mixing chamber due to the action of airflow. At this time, the adjustable unpowered air supply pipe is opened, and external air can enter the mixing chamber under the action of differential pressure. After premixing with exhaust gas, the air enters the total output air pipe, thereby driving the exhaust turbine. The introduction of air can also be pressed in through a pressure air source to further increase the amount of mixed air. The introduction of air increases the total air flow in the exhaust turbine, so that the exhaust turbine can intervene at a lower exhaust flow rate.

[0017] By introducing air during the engine refueling and speed-up project, the exhaust gas turbine can be accelerated faster, reducing the speed-up turbine lag of the existing turbocharger.

[0018] The introduction of air reduces the exhaust gas temperature and improves the working conditions of the exhaust gas turbine, which is beneficial to extending the turbine life or using lower-cost materials to manufacture the exhaust gas turbine.

[0019] When the exhaust gas turbine is started, the oil delivery rod can be continuously driven to continuously input a small amount of lubricating oil in the lubricating oil tank into the bearing seat, thereby ensuring the lubrication effect on the bearing seat and ensuring the stable operation of the exhaust gas turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the three-dimensional structure of the premixed turbocharger proposed by the present invention;

[0021] Figure 2 This is a schematic diagram of the three-dimensional split structure of the premixed turbocharger proposed by the present invention;

[0022] Figure 3 for Figure 2 A is an enlarged schematic diagram of the local three-dimensional structure;

[0023] Figure 4 A schematic diagram of the three-dimensional structure of the driving housing of the premixed turbocharger proposed by the present invention;

[0024] Figure 5 for Figure 4 Schematic diagram of the planar cross-sectional structure in the AA direction;

[0025] Figure 6 for Figure 5 The enlarged schematic diagram of the local planar structure of B in the middle;

[0026] Figure 7 for Figure 5 A magnified schematic diagram of the local planar structure of C in the middle.

[0027] In the figure: 1. exhaust pipe; 2. adjustable non-powered air supply pipe; 201. solenoid valve; 202. extension elbow; 203. filter; 3. mixing chamber; 301. pressurizing pipe; 4. total output air pipe; 5. exhaust turbine; 501. drive housing; 502. connecting housing; 503. drive shaft; 504. impeller; 505. driven housing; 506. bearing seat; 6. lubricating oil tank; 601. input cylinder; 602. oil delivery rod; 603. oil inlet tank; 604. oil delivery pipe; 605. rubber ring; 606. filling hole; 607. sealing cap; 608. connecting groove. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figure 1As shown, a premixing turbocharger comprises an exhaust pipe 1, an exhaust gas turbine 5 is arranged at the front end of the exhaust pipe 1, a premixing component is arranged between the exhaust pipe 1 and the exhaust gas turbine 5, an oil injection mechanism is arranged on the exhaust gas turbine 5, the premixing component comprises a mixing chamber 3 arranged between the exhaust pipe 1 and the exhaust gas turbine 5, the front end of the exhaust pipe 1 and the rear side of the mixing chamber 3 are penetrated and fixed, the rear side of the mixing chamber 3 is also penetrated and fixed with an adjustable non-powered air supply pipe 2, the exhaust gas inlet end of the exhaust gas turbine 5 is connected to a total output air pipe 4, the total output air pipe 4 is penetrated and fixed with the front side of the mixing chamber 3, during the low-speed operation stage of the engine, the amount of exhaust gas discharged by the cylinder is small, which is not enough to drive the exhaust gas turbine 5 to generate an intake with sufficient pressure, and by adding a mixing chamber 3 to the exhaust pipe 1, the engine exhaust gas is sprayed from the exhaust pipe 1 into the total output air pipe 4 , low pressure will be generated in the mixing chamber 3 due to the action of airflow. At this time, the adjustable non-powered air supply pipe 2 is opened, and the external air can enter the mixing chamber 3 under the action of the differential pressure. The air and the exhaust gas are premixed and then enter the total output air pipe 4, thereby driving the exhaust gas turbine 5. The introduction of air can also be pressed in through a pressure air source to further increase the amount of mixed air. The introduction of air increases the total air flow in the exhaust gas turbine 5, so that the exhaust gas turbine 5 can be involved in the work with a smaller exhaust gas flow. In the engine refueling and speed-up project, the introduction of air can make the exhaust gas turbine 5 accelerate faster and reduce the speed-up turbine lag of the existing turbocharger. The introduction of air reduces the exhaust gas temperature and improves the working conditions of the exhaust gas turbine 5, which is beneficial to extending the life of the turbine or using lower-cost materials to manufacture the exhaust gas turbine 5.

[0032] like Figure 1-Figure 4 As shown, in this embodiment, the exhaust pipe 1 and the adjustable non-powered air supply pipe 2 are arranged side by side in the same direction, and a pressurizing pipe 301 is fixed to one end of the exhaust pipe 1 extending into the mixing chamber 3. The pressurizing pipe 301 is wide at both ends and narrow in the middle. The exhaust pipe 1 and the adjustable non-powered air supply pipe 2 are arranged side by side in the same direction, so that when the exhaust gas inside the adjustable non-powered air supply pipe 2 flows at a high speed, the opening of the exhaust pipe 1 maintains a lower negative pressure, thereby better introducing air from the outer wall. The pressurizing pipe 301 is wide at both ends and narrow in the middle, the flow rate of the exhaust gas discharged from the exhaust pipe 1 can be increased over a certain length, and the negative pressure at the opening of the exhaust pipe 1 can be further increased.

[0033] like Figure 2-Figure 4 As shown, in this embodiment, an electromagnetic valve 201 is fixed to one end of the adjustable non-powered air supply pipe 2 away from the mixing chamber 3, and an extension elbow 202 is fixed to one end of the electromagnetic valve 201. One end of the extension elbow 202 is a trumpet-shaped structure, and a filter 203 is fixed inside the extension elbow 202. The electromagnetic valve 201 is controlled by the vehicle's on-board computer. The introduced air can be filtered in advance through the filter 203 to prevent large particles of dust from entering the mixing chamber and affecting the service life of the device. The electromagnetic valve 201 is controlled by the on-board computer and the opening is adjusted according to the needs of the engine.

[0034] like Figure 1-Figure 4 As shown, in this embodiment, one end of the total output air pipe 4 extending into the mixing chamber 3 is a trumpet-shaped structure, and the opening ends of the exhaust pipe 1 and the adjustable unpowered air supply pipe 2 correspond to the positions of the trumpet-shaped opening of the total output air pipe 4, so as to facilitate the new air flow of mixed air and exhaust gas to better enter the interior of the total output air pipe 4.

[0035] like Figure 4-Figure 7 As shown, in this embodiment, the exhaust gas turbine 5 includes a driving housing 501, the exhaust gas inlet end of the exhaust gas turbine 5 is located on the driving housing 501, the exhaust gas outlet end is arranged on the right side of the driving housing 501, a connecting housing 502 is fixed on one side of the driving housing 501, a driven housing 505 is fixed on the side of the connecting housing 502 away from the driving housing 501, the top surface and the right side of the driven housing 505 are respectively provided with an air outlet end and an air inlet end, bearing seats 506 are installed on both sides of the connecting housing 502, and the connecting housing 5 A driving shaft 503 is provided inside 02, and both ends of the driving shaft 503 are fixed inside the bearing seat 506. Impellers 504 are fixed at both ends of the driving shaft 503. The exhaust gas is mixed with the air and introduced into the interior of the driving casing 501 through the total output air pipe 4. The airflow drives the impeller 504 inside the driving casing 501 to rotate rapidly, thereby causing the driving shaft 503 to rotate rapidly, and causing the impeller 504 inside the slave casing 505 to rotate. The impeller 504 inside the slave casing 505 rotates rapidly to compress the air and start working.

[0036] like Figure 5-Figure 7 As shown, in this embodiment, the oil filling mechanism includes a lubricating oil tank 6 fixed to the outer wall of the connecting shell 502, an input cylinder 601 is fixed inside the lubricating oil tank 6, one end of the input cylinder 601 extends through the inside of the connecting shell 502, an oil delivery rod 602 is slidably arranged inside the input cylinder 601, an oil inlet groove 603 is opened on the outer wall of the oil delivery rod 602, and the two bearing seats 506 are respectively connected to the left and right sides of the input cylinder 601 and fixed with oil delivery pipes 604. During the process of the oil delivery rod 602 sliding back and forth inside the input cylinder 601, when the oil inlet groove 603 moves to the inside of the lubricating oil tank 6, the lubricating oil enters the inside of the oil inlet groove 603, and then when the oil inlet groove 603 moves to the input cylinder 601, the lubricating oil enters the bearing seat 506 through the oil delivery pipe 604 under the action of gravity, thereby lubricating the bearing seat 506.

[0037] like Figure 5-Figure 7As shown, in this embodiment, the middle section of the driving shaft 503 is a U-shaped structure, and the oil delivery rod 602 extends to one end connected to the inside of the casing 502 and is rotatably connected to the U-shaped structure of the driving shaft 503. By rotatably connecting one end of the oil delivery rod 602 to the U-shaped structure of the driving shaft 503, when the driving shaft 503 rotates rapidly, the oil delivery rod 602 can be driven to slide back and forth inside the input cylinder 601.

[0038] like Figure 5-Figure 7 As shown, in this embodiment, the outer wall of the oil delivery rod 602 is provided with connecting grooves 608 at the front and rear of the oil inlet groove 603, and a rubber ring 605 is fixed inside the connecting groove 608. The rubber ring 605 can prevent the lubricant inside the lubricating oil tank 6 from flowing into the input cylinder 601 and causing lubricant leakage.

[0039] like Figure 5-Figure 7 As shown, in this embodiment, a sealing cap 607 is threadedly connected to the top surface of the lubricating oil tank 6 , and the sealing cap 607 can be opened to facilitate filling of lubricating oil into the lubricating oil tank 6 .

[0040] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: during the low-speed operation stage of the engine, the amount of exhaust gas discharged from the cylinder is small, which is not enough to drive the exhaust gas turbine 5 to generate intake air with sufficient pressure. By adding a mixing chamber 3 to the exhaust pipe 1, when the engine exhaust gas is sprayed from the exhaust pipe 1 into the total output air pipe 4, low pressure will be generated in the mixing chamber 3 due to the action of the airflow. At this time, the adjustable unpowered air supply pipe 2 is opened, and the external air can enter the mixing chamber 3 under the action of the differential pressure. The air and the exhaust gas are premixed and then enter the total output air pipe 4, thereby driving the exhaust gas turbine 5. The exhaust gas is mixed with the air and then introduced into the total output air pipe 4. The airflow enters the driving housing 501, and the impeller 504 in the driving housing 501 rotates rapidly, thereby causing the driving shaft 503 to rotate rapidly, and causing the impeller 504 in the driven housing 505 to rotate. The impeller 504 in the driven housing 505 rotates rapidly, and the compressed air starts to work. One end of the oil delivery rod 602 is rotatably connected to the U-shaped structure of the driving shaft 503, so that when the driving shaft 503 rotates rapidly, the oil delivery rod 602 can be driven to slide back and forth inside the input cylinder 601. During the process of the oil delivery rod 602 sliding back and forth inside the input cylinder 601, when the oil inlet groove 603 moves to the lubricating oil tank 6 When the oil inlet groove 603 is moved to the input cylinder 601, the lubricating oil enters the bearing seat 506 through the oil delivery pipe 604 under the action of gravity, thereby lubricating the bearing seat 506. The introduction of air can also be pressed in through the pressure air source to further increase the mixed air volume. The introduction of air increases the total air flow in the exhaust gas turbine 5, so that the exhaust gas turbine 5 can be involved in the work under a smaller exhaust gas flow. In the engine refueling and speed-up project, the introduction of air can make the exhaust gas turbine 5 speed up faster, reduce the speed-up turbine lag of the existing turbocharger, and pass the air The introduction reduces the exhaust gas temperature, improves the working conditions of the exhaust gas turbine 5, and is beneficial to extending the turbine life, or using lower-cost materials to manufacture the exhaust gas turbine 5. The pressurized pipe 301 is wide at both ends and narrow in the middle, so that the flow rate of exhaust gas discharged from the exhaust pipe 1 can be increased over a certain length, and the negative pressure at the opening of the exhaust pipe 1 can be further increased. The electromagnetic valve 201 is controlled by the on-board computer and the opening is adjusted according to the needs of the engine. The rubber ring 605 can prevent the lubricant inside the lubricating oil tank 6 from flowing into the input tube 601 independently to cause lubricant leakage. The sealing cap 607 is opened to facilitate the filling of lubricating oil into the lubricating oil tank 6.

[0041] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A premixing turbocharger, comprising an exhaust pipe (1), an exhaust gas turbine (5) being arranged at the front end of the exhaust pipe (1), a premixing assembly being arranged between the exhaust pipe (1) and the exhaust gas turbine (5), an oil injection mechanism being arranged on the exhaust gas turbine (5), the premixing assembly comprising a mixing chamber (3) being arranged between the exhaust pipe (1) and the exhaust gas turbine (5), the front end of the exhaust pipe (1) and the rear side of the mixing chamber (3) being penetrated and fixed, an adjustable non-powered air supply pipe (2) being penetrated and fixed on the rear side of the mixing chamber (3), an exhaust gas inlet end of the exhaust gas turbine (5) being connected to a total output air pipe (4), the total output air pipe (4) and the front side of the mixing chamber (3) being penetrated and fixed.

2. The premixed turbocharger according to claim 1, characterized in that: The exhaust pipe (1) and the adjustable non-powered air supply pipe (2) are arranged side by side in the same direction. A pressurizing pipe (301) is fixed to one end of the exhaust pipe (1) extending into the mixing chamber (3). The pressurizing pipe (301) is wide at both ends and narrow in the middle.

3. The premixed turbocharger according to claim 2, characterized in that: An electromagnetic valve (201) is fixed to one end of the adjustable non-powered air supply pipe (2) away from the mixing chamber (3); an extension elbow (202) is fixed to one end of the electromagnetic valve (201); one end of the extension elbow (202) is a trumpet-shaped structure; a filter screen (203) is fixed inside the extension elbow (202); and the electromagnetic valve (201) is controlled by a vehicle driving computer.

4. The premixed turbocharger according to claim 3, characterized in that: The end of the total output air pipe (4) extending into the interior of the mixing chamber (3) is a trumpet-shaped structure, and the opening ends of the exhaust pipe (1) and the adjustable non-powered air supply pipe (2) both correspond to the positions of the trumpet-shaped opening of the total output air pipe (4).

5. The premixed turbocharger according to claim 4, characterized in that: The exhaust gas turbine (5) comprises a driving housing (501), an exhaust gas inlet end of the exhaust gas turbine (5) is located on the driving housing (501), an exhaust gas outlet end is arranged on the right side of the driving housing (501), a connecting housing (502) is fixed on one side of the driving housing (501), a driven housing (505) is fixed on the side of the connecting housing (502) away from the driving housing (501), an air outlet end and an air inlet end are arranged on the top surface and the right side of the driven housing (505), bearing seats (506) are installed on both sides of the connecting housing (502), a driving shaft (503) is arranged inside the connecting housing (502), both ends of the driving shaft (503) are fixed to the inside of the bearing seat (506), and impellers (504) are fixed on both ends of the driving shaft (503).

6. The premixed turbocharger according to claim 5, characterized in that: The oil injection mechanism comprises a lubricating oil tank (6) fixed to the outer wall of the connecting housing (502), an input cylinder (601) is fixed inside the lubricating oil tank (6), one end of the input cylinder (601) extends through the inside of the connecting housing (502), an oil delivery rod (602) is slidably arranged inside the input cylinder (601), an oil inlet groove (603) is formed on the outer wall of the oil delivery rod (602), and oil delivery pipes (604) are fixed between the two bearing seats (506) and the left and right sides of the input cylinder (601), respectively.

7. The premixed turbocharger according to claim 7, characterized in that: The middle section of the driving shaft (503) is a U-shaped structure, and one end of the oil delivery rod (602) extending to the inside of the housing (502) is rotatably connected to the U-shaped structure of the driving shaft (503).

8. The premixed turbocharger according to claim 7, characterized in that: The outer wall of the oil delivery rod (602) is provided with connecting grooves (608) at the front and rear of the oil inlet groove (603), and a rubber ring (605) is fixed inside the connecting groove (608).

9. The premixed turbocharger according to claim 6, characterized in that: A filling hole (606) is provided on the top surface of the lubricating oil tank (6), and a sealing cap (607) is threadedly connected to the inside of the filling hole (606).

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