Waste gas utilization device of automobile engine

Abstract

The invention relates to the technical field of engines, in particular to a waste gas utilization device of an automobile engine, which comprises a turbocharger shell, an exhaust pipe connected with the turbocharger shell, a worm gear rotating shaft arranged on the turbocharger shell, an aerostatic press rotating shaft, and a waste gas utilization device of the automobile engine, the bypass valve is not opened, the transmission proportion of the worm gear rotating shaft is reduced through the variable speed transmission assembly, then the rotating speed of the aerostatic press rotating shaft is reduced, and therefore the problem that the pressure is too high is avoided, and it is guaranteed that the aerostatic press can continuously and efficiently work; and after the air pressure in the high-pressure air tank reaches a certain value, the air is discharged from the spraying pipe through the air discharging assembly to flush the three-way catalyst in the exhaust pipe, so that the working effect of the three-way catalyst is improved, and meanwhile, the utilization efficiency of waste gas is improved.

Description

Technical Field

[0001] The invention relates to the technical field of engines, in particular to an exhaust gas utilization device of an automobile engine. Background Art

[0002] The exhaust gas utilization device of the automobile engine is a technical device that can effectively utilize the exhaust gas energy discharged by the engine, improve the thermal efficiency of the engine and reduce harmful emissions. For example, the exhaust gas turbocharger technical device mainly utilizes the exhaust gas discharged by the engine as a power source to drive the turbine to rotate. The rotation of the turbine then drives the compressor coaxial with the turbine to work, thereby increasing the intake volume. As the intake volume increases, the air in the combustion chamber increases, making the fuel burn more fully, thereby improving the power and fuel utilization of the engine. The turbocharger in the prior art is generally equipped with a bypass valve assembly, and its function is generally divided into two points. When the automobile engine is running at a low speed, the participation of the worm turbocharger is not required at this time, and the bypass valve is opened to allow the exhaust gas to be directly discharged. When the automobile engine is running at a high speed, the worm turbocharger is also running at a high speed. In order to avoid excessive pressure on the engine and the turbocharger, the bypass valve will also be opened at this time to directly discharge the exhaust gas. However, this type of design will cause the generator to be directly discharged during high-speed operation. Part of the high-pressure exhaust gas is not utilized, which is relatively wasteful. For this reason, we propose an exhaust gas utilization device for an automobile engine. Summary of the invention

[0003] A technical problem to be solved by the present application is: how to design a waste gas utilization device to improve the waste gas utilization rate.

[0004] In order to solve the above technical problems, the embodiment of the present application provides an exhaust gas utilization device for an automobile engine, comprising a turbocharger housing and an exhaust pipe connected to the turbocharger housing, and a worm gear shaft and an air compressor shaft arranged on the worm gear housing, and also comprising:

[0005] The speed transmission assembly is arranged on the turbocharger housing, and the worm gear shaft is connected to the air compressor shaft through the speed transmission assembly. The worm gear shaft is rotated to drive the air compressor shaft to rotate by the speed transmission assembly. When the engine pressure is too high, the speed transmission assembly is used to reduce the transmission ratio of the worm gear shaft.

[0006] A high-pressure gas tank is arranged on the exhaust pipe, and a nozzle is connected to the high-pressure gas tank, and one end of the nozzle is located in the exhaust pipe;

[0007] The charging assembly is arranged on the turbocharger housing and communicated with the high-pressure gas tank through a conduit. When the engine pressure is too high, the speed transmission assembly is connected with the charging assembly to drive the charging assembly to work, so that the high-pressure gas tank is continuously inflated;

[0008] The bleed assembly is arranged on the exhaust pipe. When the pressure in the high-pressure gas tank reaches a fixed value, the bleed assembly is used to discharge the gas in the high-pressure gas tank from the nozzle to flush the three-way catalytic converter in the exhaust pipe.

[0009] In some embodiments, the speed transmission assembly includes a housing fixedly connected to the turbocharger housing, the air compressor shaft is rotatably connected to the housing, a hollow shaft 2 is provided on the worm shaft, a toothed disc 1 is fixedly connected to the hollow shaft 2, and a toothed disc 2 meshing with the toothed disc 1 is fixedly connected to the air compressor shaft;

[0010] A toothed disc three is fixedly connected to the hollow shaft two, a toothed disc four is fixedly connected to the rotating shaft of the air compressor, the toothed disc one and the toothed disc four are of the same design, the toothed disc two and the toothed disc three are of the same design, and the toothed disc three is designed to have a diameter smaller than that of the toothed disc four, a slide plate is arranged in the turbocharger housing, one end of the hollow shaft two passes through the slide plate and is rotatably connected thereto, and an electric push rod is fixedly connected between the other end of the slide plate and the turbocharger housing, and the electric push rod is started to drive the hollow shaft two to move, so as to drive the toothed disc three to engage with the toothed disc four while the toothed disc one is disengaged from the toothed disc two;

[0011] A sliding groove is provided on the worm gear shaft, a sliding protrusion is fixedly connected inside the second hollow shaft, and one end of the sliding protrusion is located in the sliding groove to guide and limit the sliding of the second hollow shaft.

[0012] In some embodiments, the inflation assembly includes an injection cylinder fixedly connected to the turbocharger housing, the injection cylinder is conductively connected to an air inlet pipe and an air outlet pipe, the air outlet pipe is conductively connected to a high-pressure gas tank through a conduit, and a one-way valve is installed in both the air inlet pipe and the air outlet pipe, a piston one is slidably connected in the injection cylinder, and a transmission member is provided between the piston one and the gear disc three, the gear disc three is moved and docked with the transmission member, and the gear disc three is rotated to drive the piston one to reciprocate using the transmission member.

[0013] In some embodiments, the transmission member includes an axis three rotatably connected to the shell, a bidirectional screw is fixedly connected to the axis three, and a guide rod is fixedly connected to the shell, a push plate is slidably connected to the guide rod, one end of the bidirectional screw passes through the push plate and is connected to the push plate, and a push rod is fixedly connected between one end of the push plate and piston one, one end of the axis three is fixedly connected to a toothed disk five, and the toothed disk three is meshed with the toothed disk five after being moved, and the rotation of the toothed disk three drives the piston one to perform reciprocating motion.

[0014] In some embodiments, the deflation assembly includes a hollow tube connected to the nozzle, a piston 2 is slidably connected in the hollow tube, a push rod is fixedly connected to one end of the piston 2, a spring 1 is sleeved on the push rod, and air is inflated into the high-pressure gas tank to push the push rod to move and compress the spring 1 at the same time;

[0015] A hollow cylinder is arranged on the nozzle, and a valve assembly is arranged inside the hollow cylinder for blocking the nozzle. A cylindrical body is rotatably connected to one side of the hollow cylinder, and the cylindrical body is connected to the valve assembly. Rotating the cylindrical body drives the valve assembly to work to open the nozzle;

[0016] A guide groove is provided on the cylinder, and a cylindrical protrusion with one end located in the guide groove is provided on the push rod. The movement of the push rod drives the cylindrical protrusion to move along the guide groove to drive the cylinder to rotate.

[0017] In some embodiments, the valve assembly includes a rotating cylinder rotatably connected in a hollow cylinder, a through hole is provided on the rotating cylinder, and a shaft 4 is fixedly connected to the rotating cylinder, and rotating the shaft 4 drives the rotating cylinder to rotate so that the through hole is connected to the nozzle;

[0018] One end of the shaft four passes through the cylinder and is fixedly connected thereto, and the other end of the shaft four is sleeved with a torsion spring, and the two ends of the torsion spring are respectively fixed to the shaft four and the hollow cylinder. Rotating the shaft four drives the rotating cylinder to rotate, so that the through hole is staggered and the nozzle is blocked. At the same time, the torsion spring is twisted under force to provide it with self-restoring elastic force.

[0019] In some embodiments, a mounting plate is fixedly connected to one side of the high-pressure gas tank, one end of the push rod passes through the mounting plate and is fixedly connected to a sliding frame, and both ends of the spring are respectively in contact with piston 2 and the mounting plate, a hollow column is fixedly connected to the sliding frame, and one end of the cylindrical protrusion is located in the hollow column and is fixedly connected to spring 2.

[0020] In some embodiments, the guide groove member includes a straight guide groove 1 opened on a cylinder, one end of the cylindrical protrusion is located in the straight guide groove 1 and is slidably connected to its inner wall, and the high-pressure gas tank is inflated and the piston 2 is pushed to move, so as to drive the cylindrical protrusion to slide along the straight guide groove;

[0021] The cylinder is provided with a spiral guide groove which is connected to the straight guide groove, and the straight guide groove is designed to have a deeper opening than the spiral guide groove. The cylinder is also provided with an arc-shaped transition groove which is connected to the straight guide groove and is used to connect the straight guide groove and the spiral guide groove. The cylindrical convex slides along the arc-shaped transition groove, and the torsion spring drives the cylinder to rotate.

[0022] In some embodiments, one end of the shaft 4 slides through the sliding frame to guide the movement of the limiting sliding frame.

[0023] In some embodiments, a second straight guide groove is provided on the cylinder, and two ends of the second straight guide groove are respectively connected to the arc transition groove and the spiral guide groove.

[0024] The present invention has at least the following beneficial effects:

[0025] 1. When the pressure of the engine and turbocharger is too high, this device will not open the bypass valve, but reduce the transmission ratio of the worm gear shaft through the speed transmission component, thereby reducing the speed of the air compressor shaft, thereby avoiding the problem of excessive pressure and ensuring that the air compressor can work continuously and efficiently;

[0026] 2. The rotation of the worm gear shaft will drive the inflation component to work, and then continue to inflate the high-pressure gas tank. When the air pressure in the high-pressure gas tank reaches a certain value, the gas will be released from the nozzle through the venting component to flush the three-way catalytic converter in the exhaust pipe, thereby improving its working effect and the utilization efficiency of the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0028] Figure 2 For the present invention Figure 1 Another structural diagram;

[0029] Figure 3 For the present invention Figure 2 Schematic diagram of the local cross-section structure;

[0030] Figure 4 For the present invention Figure 3 Schematic diagram of the local cross-section structure;

[0031] Figure 5 For the present invention Figure 4 Schematic diagram of the structure of the middle A area;

[0032] Figure 6 For the present invention Figure 4 Schematic diagram of the local cross-section structure;

[0033] Figure 7 For the present invention Figure 6 Schematic diagram of the local cross-section structure;

[0034] Figure 8 This is a structural diagram of Example 2 of the present invention.

[0035] In the figure: 1. worm gear supercharger housing; 11-exhaust pipe; 12-worm gear shaft; 13-air compressor shaft; 2-speed transmission assembly; 3-high-pressure gas tank; 4-nozzle; 5-inflating assembly; 6-deflation assembly; 21-housing; 22-hollow shaft 2; 23-toothed disc 1; 24-toothed disc 2; 25-toothed disc 3; 26-toothed disc 4; 27-slide plate; 28-electric push rod; 29-slide groove; 31-slide convex; 32-injection cylinder; 33-intake pipe; 34-exhaust pipe; 35-check valve; 36-piston 1; 37-transmission member; 38-shaft Three; 39-bidirectional screw; 41-guide rod; 42-push plate; 43-push rod; 44-toothed disc five; 45-hollow tube; 46-piston two; 47-push rod; 48-spring one; 49-hollow cylinder; 51-valve assembly; 52-cylinder; 53-guide groove piece; 54-cylindrical convex; 55-rotating cylinder; 56-through hole; 57-axis four; 58-torsion spring; 59-mounting plate; 61-sliding frame; 62-hollow column; 63-spring two; 64-straight guide groove one; 65-spiral guide groove; 66-arc transition groove; 67-straight guide groove two. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example 1: Please refer to Figure 1-Figure 7 The present invention provides a technical solution: an exhaust gas utilization device for an automobile engine, comprising a turbocharger housing 1 and an exhaust pipe 11 connected to the turbocharger housing 1, and a worm gear shaft 12 and an air compressor shaft 13 arranged on the turbocharger housing 1, and also comprising:

[0038] The speed transmission assembly 2 is arranged on the turbocharger housing 1, and the worm gear shaft 12 is connected to the air compressor shaft 13 through the speed transmission assembly 2. The air compressor shaft 13 is driven to rotate by the speed transmission assembly 2 by rotating the worm gear shaft 12. When the engine pressure is too high, the speed transmission assembly 2 is used to reduce the transmission ratio of the worm gear shaft 12.

[0039] The high-pressure gas tank 3 is arranged on the exhaust pipe 11, and the high-pressure gas tank 3 is connected with a nozzle 4, and one end of the nozzle 4 is located in the exhaust pipe 11;

[0040] The charging assembly 5 is arranged on the turbocharger housing 1 and communicated with the high-pressure gas tank 3 through a conduit. When the engine pressure is too high, the speed transmission assembly 2 is connected to the charging assembly 5 to drive the charging assembly 5 to work, so that the high-pressure gas tank 3 is continuously inflated;

[0041] The air release component 6 is arranged on the exhaust pipe 11. When the pressure in the high-pressure gas tank 3 reaches a fixed value, the air release component 6 is used to discharge the gas in the high-pressure gas tank 3 from the nozzle 4 to flush the three-way catalytic converter in the exhaust pipe 11;

[0042] Specifically, when the pressure of the engine and the turbocharger is too high, the device will not open the bypass valve, but will reduce the transmission ratio of the worm gear shaft 12 through the speed transmission component 2, thereby reducing the rotation speed of the air compressor shaft 13, so as to avoid the problem of excessive pressure. At the same time, the rotation of the worm gear shaft 12 will drive the inflation component 5 to work, and then continue to inflate the high-pressure gas tank 3. After the air pressure in the high-pressure gas tank 3 reaches a certain value, the gas will be released from the nozzle 4 through the venting component 6 to flush the three-way catalytic converter in the exhaust pipe 11, thereby improving its working effect and improving the utilization efficiency of the exhaust gas.

[0043] The speed transmission assembly 2 includes a housing 21 fixedly connected to the turbocharger housing 1, the air compressor shaft 13 is rotatably connected to the housing 21 through a bearing, a hollow shaft 22 is provided on the worm shaft 12, a toothed disc 1 23 is fixedly connected to the hollow shaft 22, and a toothed disc 24 meshing with the toothed disc 1 23 is fixedly connected to the air compressor shaft 13;

[0044] A toothed disc three 25 is fixedly connected to the hollow shaft two 22, and a toothed disc four 26 is fixedly connected to the air compressor shaft 13. The toothed disc one 23 and the toothed disc four 26 are of the same design, and the toothed disc two 24 and the toothed disc three 25 are of the same design, and the toothed disc three 25 is designed to have a diameter smaller than that of the toothed disc four 26. A slide plate 27 is arranged in the turbocharger housing 1, and one end of the hollow shaft two 22 passes through the slide plate 27 and is rotatably connected thereto, and an electric push rod 28 is fixedly connected between the other end of the slide plate 27 and the turbocharger housing 1. When the pressure of the engine and the turbocharger is too high, the electric push rod 28 is started through program control to drive the slide plate 27 to move, thereby driving the hollow shaft two 22 to move, so as to drive the toothed disc three 25 to engage with the toothed disc four 26 while the toothed disc one 23 is disengaged from the toothed disc two 24, thereby reducing the rotation speed of the air compressor shaft 13;

[0045] A slide groove 29 is provided on the worm shaft 12 , and a sliding protrusion 31 is fixedly connected inside the hollow shaft 22 . One end of the sliding protrusion 31 is located in the slide groove 29 and is slidably connected to the inner wall thereof to guide and limit the sliding of the hollow shaft 22 .

[0046] The charging assembly 5 includes an injection cylinder 32 fixedly connected to the turbocharger housing, and the injection cylinder 32 is connected with an air inlet pipe 33 and an air outlet pipe 34. The air outlet pipe 34 is connected with the high-pressure gas tank 3 through a conduit, and a one-way valve 35 is installed in the air inlet pipe 33 and the air outlet pipe 34. The one-way valve 35 in the air inlet pipe 33 only allows air to enter the injection cylinder 32, and the one-way valve 35 in the air outlet pipe 34 only allows air to flow out of the injection cylinder 32. A piston 36 is slidably connected in the injection cylinder 32, and a transmission member 37 is provided between the piston 36 and the gear disc three 25. After the gear disc three 25 is moved, it is docked with the transmission member 37. The gear disc three 25 is rotated to drive the piston 36 to reciprocate using the transmission member 37, so that air is continuously charged into the high-pressure gas tank 3.

[0047] The transmission member 37 includes a shaft 38 rotatably connected to the housing 21 through a bearing, a bidirectional screw 39 is fixedly connected to the shaft 38, and a guide rod 41 is fixedly connected to the housing 21, a push plate 42 is slidably connected to the guide rod 41, one end of the bidirectional screw 39 passes through the push plate 42 and is connected with the push plate, and a push rod 43 is fixedly connected between one end of the push plate 42 and the piston 1 36, and a toothed disc 5 44 is fixedly connected to one end of the shaft 38, and the toothed disc 3 25 is moved and meshed with the toothed disc 5 44, and the toothed disc 3 25 rotates to drive the toothed disc 5 44 to rotate, thereby driving the shaft 38 to rotate, and then driving the bidirectional screw 39 to rotate, thereby driving the push plate 42 to move, and then hitting the piston 1 36 fixedly connected to the push rod 43 to do reciprocating motion.

[0048] The deflation assembly 6 includes a hollow tube 45 connected to the nozzle 4, a piston 46 is slidably connected in the hollow tube 45, a push rod 47 is fixedly connected to one end of the piston 46, and a spring 48 is sleeved on the push rod 47. Inflate the high-pressure gas tank 3 to push the push rod 47 to move and compress the spring 48 at the same time. Specifically, the greater the gas pressure in the high-pressure gas tank 3, the greater the compression of the spring 48.

[0049] A hollow cylinder 49 is provided on the nozzle 4, and a valve assembly 51 is provided inside the hollow cylinder 49 for blocking the nozzle 4. A cylindrical body 52 is rotatably connected to one side of the hollow cylinder 49, and the cylindrical body 52 is connected to the valve assembly 51. The rotating cylindrical body 52 drives the valve assembly 51 to work to open the nozzle 4.

[0050] A guide groove 53 is provided on the cylinder 52 , and a cylindrical protrusion 54 with one end located in the guide groove 53 is provided on the push rod 47 . The movement of the push rod 47 drives the cylindrical protrusion 54 to move along the guide groove 53 to drive the cylinder 52 to rotate.

[0051] The valve assembly 51 includes a rotating cylinder 55 rotatably connected in the hollow cylinder 49, a through hole 56 is opened on the rotating cylinder 55, and a shaft 57 is fixedly connected to the rotating cylinder 55, and the rotating shaft 57 drives the rotating cylinder 55 to rotate so that the through hole 56 is connected to the nozzle 4;

[0052] One end of shaft four 57 passes through cylinder 52 and is fixedly connected thereto, and the other end of shaft four 57 is sleeved with a torsion spring 58, and the two ends of torsion spring 58 are respectively fixedly connected to shaft four 57 and hollow cylinder 49. Specifically, when nozzle 4 is in a closed state, through hole 56 is offset from nozzle 4, and torsion spring 58 is also in a torsion state under force. By rotating shaft four 57, rotating cylinder 55 is driven to rotate, so that through hole 56 is offset and nozzle 4 is blocked, and torsion spring 58 is torsion under force to provide self-restoring elastic force for it.

[0053] A mounting plate 59 is fixedly connected to one side of the high-pressure gas tank 3, one end of the push rod 47 passes through the mounting plate 59 and is fixedly connected to a sliding frame 61, and both ends of the spring 1 48 are respectively in contact with the piston 2 46 and the mounting plate 59, a hollow column 62 is fixedly connected to the sliding frame 61, one end of the cylindrical protrusion 54 is located in the hollow column 62 and is fixedly connected to the spring 2 63, and both ends of the spring 2 63 are respectively fixedly connected to the hollow column 62 and the cylindrical protrusion 54.

[0054] The guide groove member 53 includes a straight guide groove 1 64 provided on the cylindrical body 52. ​​One end of the cylindrical protrusion 54 is located in the straight guide groove 1 64 and is slidably connected to the inner wall thereof. The high-pressure gas tank 3 is inflated and the piston 2 46 is pushed to move, so as to drive the cylindrical protrusion 54 to slide along the straight guide groove.

[0055] The cylindrical body 52 is provided with a spiral guide groove 65 which is in communication with the straight guide groove 1 64, and the straight guide groove is designed to have a greater depth than the spiral guide groove 65, and the cylindrical body 52 is provided with an arc-shaped transition groove 66 which is in communication with the straight guide groove and is used to connect the straight guide groove and the spiral guide groove 65, and the cylindrical protrusion 54 slides along the arc-shaped transition groove 66, and at the same time, the torsion spring 58 drives the cylindrical body 52 to rotate;

[0056] Specifically, the air is continuously filled into the high-pressure gas tank 3, causing the pressure of the high-pressure gas tank 3 to increase, thereby pushing the piston 2 46 to move, and compressing the spring 1 48 at the same time. At the same time, the cylindrical protrusion 54 slides along the straight guide groove 1 64. At this time, the cylinder 52 does not rotate. Only when the cylindrical protrusion 54 is aligned with the arc transition groove 66, the cylinder 52 loses the rotation limit, thereby driving the shaft 4 57 and the cylinder 52 to rotate through the torsion spring 58 reset, and at the same time, the cylindrical protrusion 54 slides along the arc transition groove 66, and the rotating cylinder 55 rotates. The through hole 56 is connected to the nozzle 4, so that the air in the high-pressure gas tank 3 can be ejected from the nozzle 4, and when the cylindrical protrusion 54 slides along the arc-shaped transition groove 66, the cylindrical protrusion 54 simultaneously moves relative to the hollow column 62 to compress the spring 2 63, and then the air pressure in the high-pressure gas tank 3 suddenly drops, so that the cylindrical protrusion 54 is driven to slide along the spiral guide groove 65 through the spring 1 48 reset, and then the cylinder 52 and the shaft 4 57 are driven to rotate, thereby driving the rotating cylinder 55 to rotate, so that the through hole 56 is staggered to re-close the nozzle 4 repeatedly in sequence.

[0057] One end of shaft four 57 slides through the sliding frame 61 to guide the movement of the limiting sliding frame 61, thereby improving the stability of the device during operation.

[0058] Example 2: Please refer to Figure 1-Figure 8 , the present invention provides a technical solution: Example 2 is optimized on the basis of Example 1;

[0059] A straight guide groove 2 67 is provided on the cylinder 52, and the two ends of the straight guide groove 2 67 are respectively connected to the arc transition groove 66 and the spiral guide groove 65, so that when the cylindrical protrusion 54 is reset by the spring 1 48, it will first move along the straight guide groove 2 67 for a distance and then enter the spiral guide groove 65, thereby extending the time for the nozzle 4 to be fully opened and improving the utilization rate of the gas in the high-pressure gas tank 3.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0061] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. An exhaust gas utilization device for an automobile engine, comprising a turbocharger housing (1), an exhaust pipe (11) connected to the turbocharger housing (1), and a worm gear shaft (12) and an air compressor shaft (13) arranged on the worm gear housing (1), characterized in that: Also included are: The speed transmission assembly (2) is arranged on the turbocharger housing (1), and the worm gear shaft (12) is connected to the air compressor shaft (13) through the speed transmission assembly (2). The worm gear shaft (12) is rotated to drive the air compressor shaft (13) to rotate by utilizing the speed transmission assembly (2). When the engine pressure is too high, the speed transmission assembly (2) is utilized to reduce the transmission ratio of the worm gear shaft (12); A high-pressure gas tank (3) is arranged on the exhaust pipe (11); a nozzle (4) is conductively connected to the high-pressure gas tank (3); one end of the nozzle (4) is located in the exhaust pipe (11); The charging assembly (5) is arranged on the turbocharger housing (1) and is connected to the high-pressure gas tank (3) through a conduit. When the engine pressure is too high, the speed change transmission assembly (2) is connected to the charging assembly (5) to drive the charging assembly (5) to work, so that the high-pressure gas tank (3) is continuously charged. The air release component (6) is arranged on the exhaust pipe (11). When the pressure in the high-pressure gas tank (3) reaches a fixed value, the air release component (6) is used to discharge the gas in the high-pressure gas tank (3) from the nozzle (4) to flush the three-way catalytic converter in the exhaust pipe (11).

2. The exhaust gas utilization device of an automobile engine according to claim 1, characterized in that: The speed change transmission assembly (2) comprises a housing (21) fixedly connected to the turbocharger housing (1); the air compressor shaft (13) is rotatably connected to the housing (21); a hollow shaft (22) is provided on the worm shaft (12); a toothed disc (23) is fixedly connected to the hollow shaft (22); and a toothed disc (24) meshing with the toothed disc (23) is fixedly connected to the air compressor shaft (13); A toothed disc three (25) is fixedly connected to the hollow shaft two (22), and a toothed disc four (26) is fixedly connected to the air compressor rotating shaft (13). The toothed disc one (23) and the toothed disc four (26) are of the same design, and the toothed disc two (24) and the toothed disc three (25) are of the same design, and the toothed disc three (25) is of a design with a diameter smaller than that of the toothed disc four (26). A slide plate (27) is arranged in the turbocharger housing (1), and one end of the hollow shaft two (22) passes through the slide plate (27) and is rotatably connected thereto, and an electric push rod (28) is fixedly connected between the other end of the slide plate (27) and the turbocharger housing (1). When the electric push rod (28) is started, the hollow shaft two (22) is driven to move, so as to drive the toothed disc three (25) to engage with the toothed disc four (26), and at the same time the toothed disc one (23) is disengaged from the toothed disc two (24); A sliding groove (29) is provided on the worm gear shaft (12), a sliding protrusion (31) is fixedly connected inside the hollow shaft (22), and one end of the sliding protrusion (31) is located in the sliding groove (29) to guide and limit the sliding of the hollow shaft (22).

3. The exhaust gas utilization device of an automobile engine according to claim 2, characterized in that: The inflation assembly (5) comprises an injection cylinder (32) fixedly connected to the turbocharger housing, the injection cylinder (32) being connected to an air inlet pipe (33) and an air outlet pipe (34), the air outlet pipe (34) being connected to the high-pressure gas tank (3) through a conduit, and a one-way valve (35) being installed in each of the air inlet pipe (33) and the air outlet pipe (34), a piston one (36) being slidably connected in the injection cylinder (32), and a transmission member (37) being arranged between the piston one (36) and the toothed disc three (25), the toothed disc three (25) being moved to dock with the transmission member (37), and the toothed disc three (25) being rotated to drive the piston one (36) to perform reciprocating motion by utilizing the transmission member (37).

4. The exhaust gas utilization device of an automobile engine according to claim 3, characterized in that: The transmission member (37) comprises a shaft three (38) rotatably connected to the housing (21), a bidirectional screw rod (39) being fixedly connected to the shaft three (38), and a guide rod (41) being fixedly connected to the housing (21), a push plate (42) being slidably connected to the guide rod (41), one end of the bidirectional screw rod (39) passing through the push plate (42) and being connected thereto, and a push rod (43) being fixedly connected between one end of the push plate (42) and the piston one (36), one end of the shaft three (38) being fixedly connected to a toothed disc five (44), meshing with the toothed disc five (44) after moving the toothed disc three (25), and rotating the toothed disc three (25) to drive the piston one (36) to make a reciprocating motion.

5. The exhaust gas utilization device of an automobile engine according to claim 4, characterized in that: The deflation assembly (6) comprises a hollow tube (45) which is in communication with the nozzle (4), a piston (46) being slidably connected inside the hollow tube (45), a push rod (47) being fixedly connected to one end of the piston (46), a spring (48) being sleeved on the push rod (47), and air is inflated into the high-pressure gas tank (3) to push the push rod (47) to move and compress the spring (48) at the same time; A hollow cylinder (49) is arranged on the nozzle (4), a valve assembly (51) is arranged inside the hollow cylinder (49) for blocking the nozzle (4), a cylindrical body (52) is rotatably connected to one side of the hollow cylinder (49), the cylindrical body (52) is connected to the valve assembly (51), and the rotation of the cylindrical body (52) drives the valve assembly (51) to work so as to open the nozzle (4); A guide groove (53) is provided on the cylindrical body (52), and a cylindrical protrusion (54) with one end located in the guide groove (53) is provided on the push rod (47). The push rod (47) moves to drive the cylindrical protrusion (54) to move along the guide groove (53) to drive the cylindrical body (52) to rotate.

6. The exhaust gas utilization device of an automobile engine according to claim 5, characterized in that: The valve assembly (51) comprises a rotating cylinder (55) rotatably connected in the hollow cylinder (49), a through hole (56) is provided on the rotating cylinder (55), and a shaft (57) is fixedly connected to the rotating cylinder (55), and the rotating cylinder (55) is driven to rotate by rotating the shaft (57) so that the through hole (56) is connected to the nozzle (4); One end of the shaft four (57) passes through the cylinder (52) and is fixedly connected thereto, and the other end of the shaft four (57) is sleeved with a torsion spring (58), and the two ends of the torsion spring (58) are respectively fixed to the shaft four (57) and the hollow cylinder (49). Rotating the shaft four (57) drives the rotating cylinder (55) to rotate, so that the through hole (56) is offset and the nozzle (4) is blocked. At the same time, the torsion spring (58) is twisted under force to provide it with self-restoring elastic force.

7. The exhaust gas utilization device of an automobile engine according to claim 6, characterized in that: One side of the high-pressure gas tank (3) is fixedly connected to a mounting plate (59), one end of the push rod (47) passes through the mounting plate (59) and is fixedly connected to a sliding frame (61), and both ends of the spring one (48) are respectively in contact with the piston two (46) and the mounting plate (59), a hollow column (62) is fixedly connected to the sliding frame (61), and one end of the cylindrical protrusion (54) is located in the hollow column (62) and is fixedly connected to the spring two (63).

8. The exhaust gas utilization device of an automobile engine according to claim 7, characterized in that: The guide groove member (53) comprises a straight guide groove (64) formed on the cylindrical body (52); one end of the cylindrical protrusion (54) is located in the straight guide groove (64) and is slidably connected to the inner wall thereof, and the high-pressure gas tank (3) is inflated with gas and the piston (46) is pushed to move, thereby driving the cylindrical protrusion (54) to slide along the straight guide groove; The cylindrical body (52) is provided with a spiral guide groove (65) which is in communication with the straight guide groove (64), and the straight guide groove is designed to have a greater depth than the spiral guide groove (65). The cylindrical body (52) is provided with an arc-shaped transition groove (66) which is in communication with the straight guide groove and is used to connect the straight guide groove and the spiral guide groove (65). The cylindrical protrusion (54) slides along the arc-shaped transition groove (66), and the torsion spring (58) drives the cylindrical body (52) to rotate.

9. The exhaust gas utilization device of an automobile engine according to claim 8, characterized in that: One end of the shaft four (57) slides through the sliding frame (61) to guide the movement of the limiting sliding frame (61).

10. The exhaust gas utilization device of an automobile engine according to claim 9, characterized in that: The cylindrical body (52) is provided with a second straight guide groove (67), and the two ends of the second straight guide groove (67) are respectively connected to the arc-shaped transition groove (66) and the spiral guide groove (65).

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