Engine system, engine and exhaust section adjusting device

Abstract

The utility model discloses an engine system, an engine and an exhaust section adjusting device. The exhaust section adjusting device comprises a rotating shaft, a transmission crank and a drive receiving shaft. The transmission crank is connected with the drive receiving shaft and the rotating shaft. The drive receiving shaft drives the rotating shaft to rotate through the transmission crank. N section molded lines are arranged on the rotating shaft, N is a positive integer, the section molded lines are matched with the exhaust pipe of the engine to form the exhaust section, and the size of the exhaust section of the exhaust pipe can be changed through matching of different section molded lines on the rotating shaft and the exhaust pipe. The problems that the exhaust flow speed and the exhaust flow direction of high-temperature exhaust cannot be intervened, exhaust cannot be intervened according to the working condition of an engine, and absorption and utilization of exhaust energy by the turbine end of an exhaust gas turbocharger are seriously affected are solved.

Description

Technical Field

[0001] The present application relates to the field of exhaust control technology, and in particular to an engine system, an engine, and an exhaust cross-section adjustment device. Background Art

[0002] Engine exhaust is characterized by high temperature, high velocity, and a flow rate that varies continuously with engine operating conditions. The energy of the supercharged and intercooled exhaust turbocharger in the engine system comes from the utilization of exhaust energy, and the efficiency of this energy utilization is closely related to the exhaust flow rate and direction within the exhaust pipe.

[0003] The inventors have discovered that the existing exhaust pipe has a fixed cross-section. Due to the fixed exhaust cross-section, it is impossible to intervene in the exhaust flow rate and exhaust direction of the high-temperature exhaust, nor is it possible to intervene in the exhaust according to the engine operating conditions, which seriously affects the absorption and utilization of exhaust energy by the turbine end of the exhaust gas turbocharger. Utility Model Content

[0004] Based on the above-mentioned deficiencies in the prior art, the present application provides an engine system, an engine, and an exhaust cross-section adjustment device to solve the problem that the exhaust cross-section of the existing exhaust pipe is fixed, the exhaust flow rate and exhaust flow direction of the high-temperature exhaust cannot be intervened, and the exhaust cannot be intervened according to the engine operating conditions, which seriously affects the absorption and utilization of exhaust energy by the turbine end of the exhaust gas turbocharger.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A first aspect of the present application provides an exhaust cross-section adjustment device, comprising: a rotating shaft, a transmission crank, and a drive receiving shaft;

[0007] The transmission crank is connected to the drive receiving shaft and the rotating shaft respectively;

[0008] The rotating shaft is provided with N cross-sectional profiles, where N is a positive integer. The cross-sectional profiles cooperate with the exhaust pipe of the engine to form an exhaust cross-section.

[0009] Optionally, in the above-mentioned exhaust cross-section adjustment device, a first mounting bottom hole and a second mounting bottom hole are opened on the exhaust pipe, and the exhaust cross-section adjustment device further includes: a first bearing, a second bearing, a first sealing ring and a second sealing ring;

[0010] One end of the rotating shaft is sealed and connected to the first mounting bottom hole through the first bearing and the first sealing ring, and the other end of the rotating shaft is sealed and connected to the second mounting bottom hole through the second bearing and the second sealing ring.

[0011] Optionally, in the above-mentioned exhaust cross-section adjustment device, the first bearing and the second bearing are sliding bearings or rolling bearings.

[0012] Optionally, the above-mentioned exhaust cross-section adjustment device further includes: a thrust mechanism, which is arranged at the drive input end of the rotating shaft.

[0013] Optionally, in the above-mentioned exhaust cross-section adjustment device, the thrust mechanism is a stop gauge.

[0014] Optionally, the above-mentioned exhaust cross-section adjustment device further includes: a drive motor, and the drive motor is connected to the drive receiving shaft.

[0015] Optionally, in the above-mentioned exhaust cross-section adjustment device, the connection between the drive receiving shaft and the transmission crank is a rigid connection, and the connection between the transmission crank and the rotating shaft is a rigid connection.

[0016] A second aspect of the present application provides an engine, wherein the exhaust pipe of the engine is equipped with an exhaust cross-section adjustment device as described in any one of the items disclosed in the first aspect.

[0017] A third aspect of the present application provides an engine system, comprising: an exhaust gas turbocharger, a controller, and the engine disclosed in the second aspect;

[0018] The air inlet of the exhaust gas turbocharger is connected to the exhaust manifold of the engine, and the exhaust port of the exhaust gas turbocharger is connected to the exhaust pipe of the engine;

[0019] The controller is connected to a driving motor of an exhaust cross-section adjusting device in the engine, and the driving motor is controlled by the controller.

[0020] Optionally, in the above-mentioned engine system, the exhaust cross-section adjustment device in the engine is installed on the exhaust pipe between the intersection of the exhaust manifold of the engine and the air inlet of the exhaust gas turbocharger.

[0021] The present application provides an exhaust cross-section adjustment device, comprising: a rotating shaft, a transmission crank and a drive receiving shaft; the transmission crank is connected to the drive receiving shaft and the rotating shaft respectively, and the drive receiving shaft drives the rotating shaft to rotate through the transmission crank; N cross-sectional profiles are provided on the rotating shaft, N is a positive integer, and the cross-sectional profile cooperates with the exhaust pipe of the engine to form an exhaust cross-section. The exhaust cross-section size of the exhaust pipe can be changed by cooperating with the exhaust pipe of the engine through different cross-sectional profiles on the rotating shaft, thereby solving the problem that the exhaust cross-section of the existing exhaust pipe is fixed, the exhaust flow rate and exhaust flow direction of high-temperature exhaust cannot be intervened, and the exhaust cannot be intervened according to the engine operating conditions, which seriously affects the absorption and utilization of exhaust energy by the turbine end of the exhaust gas turbocharger. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0023] Figure 1 A schematic structural diagram of an exhaust cross-section adjustment device provided in an embodiment of the present application;

[0024] Figure 2 and Figure 3 Schematic diagram of the application of two exhaust cross-section adjustment devices provided in an embodiment of the present application in an exhaust pipe of an engine;

[0025] Figure 4 A cross-sectional view of an exhaust cross-section adjustment device provided in an embodiment of the present application applied to an exhaust pipe of an engine;

[0026] Figure 5 A schematic diagram of a cross-sectional profile provided in an embodiment of the present application;

[0027] Figure 6 A schematic diagram of a reference cross section of an exhaust pipe provided in an embodiment of the present application;

[0028] Figure 7 A schematic diagram of the installation position of an exhaust cross-section adjustment device provided in another embodiment of the present application;

[0029] Among them, there are a drive receiving shaft 1, a rotation axis 2, a cross-sectional profile 3, a second sealing ring 4, a rotation shaft 5, a transmission crank 6, a thrust mechanism 7, an exhaust pipe 10, a first mounting bottom hole 11, and a second mounting bottom hole 12. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0031] In this application, relational terms such as first and second, etc., are used only 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 "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0032] The present application provides an engine system, an engine, and an exhaust cross-section adjustment device to solve the problem that the exhaust cross-section of the existing exhaust pipe is fixed, the exhaust flow rate and exhaust flow direction of the high-temperature exhaust cannot be intervened, and the exhaust cannot be intervened according to the engine operating conditions, which seriously affects the absorption and utilization of exhaust energy by the turbine end of the exhaust gas turbocharger.

[0033] See Figures 1 to 4 , the exhaust cross-section adjustment device mainly includes: a rotating shaft 5, a transmission crank 6 and a drive receiving shaft 1;

[0034] The transmission crank 6 is connected to the drive receiving shaft 1 and the rotating shaft 5 respectively, and the drive receiving shaft 1 drives the rotating shaft 5 to rotate through the transmission crank 6;

[0035] One end of the transmission crank 6 is connected to the drive receiving shaft 1 , and the other end of the transmission crank 6 is connected to the rotating shaft 5 .

[0036] In practical applications, the drive receiving shaft 1 can drive the rotating shaft 5 to rotate around the rotation axis 2 of the rotating shaft 5 itself through the transmission crank 6 .

[0037] It should be noted that in order to ensure the accuracy of exhaust control, the drive receiving shaft 1 and the transmission crank 6 can be rigidly connected, and the transmission crank 6 and the rotating shaft 5 can also be rigidly connected; of course, it is not limited to this, and can also be determined according to the application environment and user needs, all within the scope of protection of this application.

[0038] The rotating shaft 5 is provided with N cross-sectional profiles 3 , where N is a positive integer. The cross-sectional profiles 3 cooperate with the exhaust pipe 10 to form an exhaust cross section.

[0039] The cross-sectional profile 3 on the rotation axis 5 can be a concave cross-sectional profile, such as Figure 1 and Figure 5As shown, it can also be an outwardly convex cross-sectional profile; of course, it is not limited to this, and can also be determined according to the user's needs in the application situation, all within the scope of protection of this application.

[0040] In practical applications, the cross-sectional profile 3 is generally pre-designed. The number of cross-sectional profiles 3 provided on the rotating shaft 5 is related to the accuracy of the exhaust cross-sectional adjustment device. The more cross-sectional profiles 3 there are, the higher the control accuracy is and the more complex it is.

[0041] Specifically, different cross-sectional profiles 3 and exhaust pipe 10 form different exhaust cross-sections. For example, the cross-sectional differences of different cross-sectional profiles 3 can be as follows: Figure 5 shown.

[0042] Furthermore, when different cross-sectional profiles 3 in the exhaust cross-sectional adjustment device cooperate with the exhaust pipe 10 to form different exhaust cross-sectional areas, the position opening of the exhaust cross-sectional adjustment device is different. Each exhaust cross-sectional area formed by the cross-sectional profile 3 and the exhaust pipe 10 cooperates with one position opening.

[0043] It should be noted that the cross-sectional profile 3 can form an exhaust cross-sectional area with the reference cross-sectional area of ​​the exhaust pipe 10. The reference cross-sectional area is the cross-sectional shape of the original design of the exhaust pipe 10 used for original calibration, and is also a cross-sectional profile on the rotating shaft 5. For example, Figure 6 As shown, the reference cross section of the exhaust pipe may be the cross-sectional shape of the exhaust pipe 10 .

[0044] When the cross-sectional profile 3 is the same as the cross-sectional profile of the reference cross-section, the area of ​​the exhaust cross-section formed by the cross-sectional profile 3 and the reference cross-section of the exhaust pipe 10 is 0, that is, when the exhaust cross-sectional adjustment device is in the open position at this time, the exhaust cross-sectional adjustment device is in a completely closed state.

[0045] It should also be noted that the cross-sectional profile 3 on the rotating shaft 5 can serve as a valve plate for the exhaust cross-section adjustment device, cooperating with the engine's exhaust pipe 10 to form different exhaust cross-sections. Specifically, the greater the inward curvature of the cross-sectional profile 3 on the rotating shaft 5, the larger the exhaust cross-sectional area formed by the cross-sectional profile 3 in conjunction with the engine's exhaust pipe 10; conversely, the greater the outward curvature of the cross-sectional profile 3 on the rotating shaft 5, the smaller the exhaust cross-sectional area formed by the cross-sectional profile 3 in conjunction with the engine's exhaust pipe 10.

[0046] In some embodiments, combined Figures 1 to 3 The exhaust pipe 10 is provided with a first mounting bottom hole 11 and a second mounting bottom hole 12. The exhaust cross-section adjustment device further includes: a first bearing (not shown in the figure), a second bearing (not shown in the figure), a first sealing ring (not shown in the figure) and a second sealing ring 4;

[0047] One end of the rotating shaft 5 is sealed and connected to the first mounting bottom hole 11 through a first bearing and a first sealing ring, and the other end of the rotating shaft 5 is sealed and connected to the second mounting bottom hole 12 through a second bearing and a second sealing ring 4 .

[0048] Among them, the first bearing and the second bearing can be sliding bearings or rolling bearings; of course, it is not limited to this, and can also be other existing types of bearings. This application does not limit them and they are all within the scope of protection of this application.

[0049] It should be noted that the first and second bearings are primarily used to support the rotating shaft 5 in the exhaust cross-section adjustment device, reducing the friction coefficient during the movement of the rotating shaft 5 and ensuring the rotational accuracy of the rotating shaft 5. The first and second sealing rings 4 are used to achieve exhaust sealing between the rotating shaft 5 and the exhaust pipe 10 in the exhaust cross-section adjustment device to prevent exhaust leakage.

[0050] In some embodiments, also combined Figures 1 to 3 In order to prevent the exhaust cross-section adjustment device from falling out, the exhaust cross-section adjustment device further includes: a thrust mechanism 7, which is arranged at the drive input end of the rotating shaft 5.

[0051] In specific applications, the thrust mechanism 7 can be a stop gauge; of course, it is not limited to this, and can also be other existing devices that can achieve the thrust function. This application does not limit the type of thrust mechanism 7, and all are within the scope of protection of this application.

[0052] In some embodiments, in order to facilitate driving the rotating shaft 5 in the exhaust cross-section adjustment device to rotate around its own rotation axis 2, the exhaust cross-section adjustment device may also include: a driving motor, which is connected to the drive receiving shaft 1 to provide a rotational driving force for the drive receiving shaft 1 to drive the rotation of the rotating shaft 5 in the exhaust cross-section adjustment device.

[0053] In practical applications, the driving motor may be connected to the driving receiving shaft 1 via a connecting rod to provide a rotational driving force for the driving receiving shaft 1 .

[0054] It should be noted that the specific type of the drive motor can be determined according to the application environment and user needs, and this application does not limit it and all are within the scope of protection of this application.

[0055] It should also be noted that in actual applications, the thrust mechanism 7 and / or the drive motor can be selectively provided in the exhaust cross-section adjustment device depending on the application environment and user needs to meet different usage requirements.

[0056] In some embodiments, the exhaust cross-section adjustment device can be installed on the exhaust pipe 10 of the engine. The specific installation location can be: on the exhaust pipe between the intersection of the exhaust manifold in the engine and the turbine inlet of the exhaust gas turbocharger.

[0057] Furthermore, the installation position of the exhaust cross-section adjustment device can be at the turbine end inlet (air inlet) of the exhaust gas turbocharger after the exhaust manifold of the engine intersects. For example, the installation position can be as follows: Figure 7 shown.

[0058] It should be noted that within the engine system, an exhaust turbocharger is installed in the engine's exhaust pipe 10. Exhaust gas from the engine drives the turbine's turbine wheel, which in turn rotates the compressor's impeller, supercharging the intake system. By controlling the exhaust cross-section of the engine's exhaust pipe 10 before the exhaust gas enters the turbine, the exhaust cross-section adjustment device improves the utilization of exhaust energy at the turbine end of the exhaust turbocharger, thereby enhancing the efficiency of the exhaust turbocharger.

[0059] In actual applications, the operating conditions of the engine are not constant, causing the exhaust gas in the exhaust pipe 10 to change with changes in the engine operating conditions. These changes may include changes in flow rate, flow velocity, temperature, etc. These changes will affect the utilization of exhaust energy by the turbine end of the exhaust gas turbocharger, directly affecting the efficiency of the turbine end of the exhaust gas turbocharger. The exhaust cross-section adjustment device can change the exhaust cross-section of the exhaust pipe 10, and the shape of the flow channel of the exhaust pipe 10 can also be changed... These changes will affect the exhaust flow rate and exhaust flow direction in the exhaust pipe 10. According to the different operating conditions and changes of the engine, the driving receiving shaft 1 in the exhaust cross-section adjustment device drives the rotating shaft 5 to rotate to a specified position, so that the different cross-sectional profiles 3 on the shaft cooperate with the exhaust pipe 10, which can change the exhaust flow rate and exhaust flow direction of the exhaust pipe 10, thereby improving the efficiency of the exhaust gas turbocharger.

[0060] It should be noted that the exhaust cross-section adjustment device can be designed according to different engine models, and the specific installation position can also be designed according to the exhaust pipe 10 of the specific engine application, so as to optimize the efficiency of the exhaust gas turbocharger.

[0061] In summary, by controlling the cross-sectional profile 3 provided on the rotating shaft 5 in the exhaust cross-sectional adjustment device to be at different positions, different cross-sectional shapes and sizes can be formed with the reference cross-sectional area and flow channel of the exhaust pipe 10, thereby controlling the exhaust flow rate and flow direction in the exhaust pipe 10 to improve the efficiency of the exhaust gas turbocharger.

[0062] The exhaust cross-section adjustment device provided in this embodiment includes: a rotating shaft 5, a transmission crank 6 and a drive receiving shaft 1; the transmission crank 6 is respectively connected to the drive receiving shaft 1 and the rotating shaft 5, and the drive receiving shaft 1 drives the rotating shaft 5 to rotate through the transmission crank 6; N cross-sectional profiles 3 are provided on the rotating shaft 5, N is a positive integer, and the cross-sectional profiles 3 cooperate with the exhaust pipe 10 of the engine to form an exhaust cross-section. The exhaust cross-section size of the exhaust pipe 10 can be changed by cooperating with different cross-sectional profiles 3 on the rotating shaft 5 and the exhaust pipe 10, which solves the problem that the exhaust cross-section of the existing exhaust pipe 10 is fixed, the exhaust flow rate and exhaust flow direction of the high-temperature exhaust cannot be intervened, and the exhaust cannot be intervened according to the engine operating conditions, which seriously affects the absorption and utilization of exhaust energy by the turbine end of the exhaust gas turbocharger.

[0063] On the basis of the exhaust cross-section adjustment device provided in the above embodiments, optionally, another embodiment of the present application further provides an engine, the exhaust pipe 10 of the engine is equipped with the exhaust cross-section adjustment device as described in any of the above embodiments.

[0064] In actual application, Figure 7 As shown, the installation position of the exhaust cross-section adjustment device includes: on the exhaust pipe between the intersection of the exhaust manifold in the engine and the turbine inlet of the exhaust gas turbocharger.

[0065] Specifically, the installation position of the exhaust cross-section adjustment device can be after the exhaust manifolds in the engine meet, near the turbine end inlet of the exhaust gas turbocharger.

[0066] It should be noted that an exhaust gas turbocharger is installed in the engine's exhaust pipe 10. Exhaust gas from the engine drives the turbine wheel of the turbine to rotate, which in turn drives the impeller of the compressor to rotate and boost the intake system. By controlling the exhaust cross-section of the engine's exhaust pipe 10 through the exhaust cross-section adjustment device, the exhaust gas turbocharger's turbine end can improve its utilization of exhaust energy and enhance its efficiency.

[0067] In some embodiments, the engine can be a diesel engine or a gasoline engine; of course, it is not limited to this, and it can be other existing types of engines. This application does not limit the specific type of engine, and all are within the scope of protection of this application.

[0068] It should be noted that, for the relevant description of the exhaust cross-section adjustment device, reference can be made to the above-mentioned embodiment, and for the relevant description of the engine, reference can be made to the prior art, which will not be repeated in this application.

[0069] Based on the exhaust cross-section adjustment device provided in the above embodiment, optionally, another embodiment of the present application further provides an engine system, mainly comprising: an exhaust gas turbocharger, a controller, and an engine as in any of the above embodiments;

[0070] The engine comprises at least an exhaust manifold and an exhaust pipe; the air inlet of the exhaust gas turbocharger is connected to the exhaust manifold of the engine, and the exhaust port of the exhaust gas turbocharger is connected to the exhaust pipe of the engine;

[0071] The controller is connected to a driving motor of an exhaust cross-section adjusting device in the engine, and the driving motor is controlled by the controller.

[0072] In actual applications, the exhaust gas turbocharger is installed between the exhaust manifold and the exhaust pipe of the engine, and mainly includes a turbine and a compressor; the exhaust gas discharged by the engine drives the turbine of the turbine, and the turbine drives the impeller of the coaxial compressor to rotate. The compressor compresses the inhaled air and increases the air pressure flowing through the internal combustion engine intake pipe, thereby increasing the intake volume of the engine cylinder, achieving the purpose of supercharging, and better meeting the engine's fuel combustion efficiency.

[0073] In a specific application, the exhaust cross-section adjustment device in the engine is installed on the exhaust pipe between the intersection of the exhaust manifold of the engine and the air inlet of the exhaust gas turbocharger. Specifically, the installation position of the exhaust cross-section adjustment device can be after the intersection of the exhaust manifold of the engine and near the turbine end inlet (air inlet) of the exhaust gas turbocharger. For example, the installation position can be as follows: Figure 7 shown.

[0074] In practical applications, the controller may be an ECU (electronic control unit); of course, it is not limited thereto and may also be determined according to the application environment and user needs. This application does not limit this and all are within the scope of protection of this application.

[0075] It should be noted that the controller can control the drive motor to adjust the exhaust cross-section of the engine system according to the operating conditions of the engine system, so that the exhaust cross-section of the engine system matches the operating conditions of the engine system, thereby improving the absorption and utilization of the engine exhaust energy by the turbine end of the exhaust gas turbocharger.

[0076] It should also be noted that, for the relevant description of the engine, reference can be made to the above embodiments, and for the relevant description of the engine system, reference can be made to the prior art, which will not be repeated in this application.

[0077] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the components and steps of each example according to their functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0078] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An exhaust cross-section adjustment device, characterized in that: The exhaust cross-section adjustment device is installed on the exhaust pipe between the intersection of the exhaust manifold of the engine and the air inlet of the exhaust gas turbocharger, and the exhaust cross-section adjustment device includes: a rotating shaft, a transmission crank and a drive receiving shaft; The transmission crank is connected to the drive receiving shaft and the rotating shaft respectively; The rotating shaft is provided with N cross-sectional profiles, where N is a positive integer, and the cross-sectional profiles cooperate with the exhaust pipe of the engine to form an exhaust cross-section; The cross-sectional profile and the reference cross-sectional area of ​​the exhaust pipe form an exhaust cross-sectional area, and the reference cross-sectional area is the cross-sectional shape of the original design of the originally calibrated exhaust pipe. One end of the rotating shaft is sealed and connected to the first mounting bottom hole through a first bearing and a first sealing ring, and the other end of the rotating shaft is sealed and connected to the second mounting bottom hole through a second bearing and a second sealing ring.

2. The exhaust cross-section adjustment device according to claim 1, characterized in that: The exhaust pipe is provided with a first mounting bottom hole and a second mounting bottom hole, and the exhaust cross-section adjustment device further comprises: a first bearing, a second bearing, a first sealing ring and a second sealing ring; One end of the rotating shaft is sealed and connected to the first mounting bottom hole through the first bearing and the first sealing ring, and the other end of the rotating shaft is sealed and connected to the second mounting bottom hole through the second bearing and the second sealing ring.

3. The exhaust cross-section adjustment device according to claim 2, characterized in that: The first bearing and the second bearing are sliding bearings or rolling bearings.

4. The exhaust cross-section adjustment device according to claim 1, characterized in that: Also includes: A thrust mechanism is provided at the drive input end of the rotating shaft.

5. The exhaust cross-section adjustment device according to claim 4, characterized in that: The thrust mechanism is a stop gauge.

6. The exhaust cross-section adjustment device according to claim 1, characterized in that: Also includes: A driving motor is connected to the driving receiving shaft.

7. The exhaust cross-section adjustment device according to any one of claims 1 to 6, characterized in that: The connection between the drive receiving shaft and the transmission crank is a rigid connection, and the connection between the transmission crank and the rotating shaft is a rigid connection.

8. An engine, characterized in that: The exhaust pipe of the engine is equipped with an exhaust cross-section adjustment device as described in any one of claims 1-7.

9. An engine system, characterized in that: include: An exhaust gas turbocharger, a controller and an engine as claimed in claim 8; The air inlet of the exhaust gas turbocharger is connected to the exhaust manifold of the engine, and the exhaust port of the exhaust gas turbocharger is connected to the exhaust pipe of the engine; The controller is connected to a driving motor of an exhaust cross-section adjusting device in the engine, and the driving motor is controlled by the controller.

10. The engine system according to claim 9, characterized in that The exhaust cross-section adjusting device in the engine is installed on the exhaust pipe between the intersection of the exhaust manifold of the engine and the air inlet of the exhaust gas turbocharger.

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