Turbocharger based on linkage of inlet guide vanes and bypass valve

Abstract

The application relates to a turbocharger based on linkage of inlet guide vanes and bypass valves, and relates to the field of turbochargers. The turbocharger based on linkage of inlet guide vanes and bypass valves provided by the technical scheme can control the rotation angle of the inlet guide vanes of a compressor according to the opening degree of the bypass valve in real time when the turbocharger is running, so that the circumferential angle of air entering the compressor is changed, and the compressor is kept running in a high-efficiency area as much as possible. In addition, the overall structure of the turbocharger is simple and easy to implement, and the cost is low; only the rotation angle of the guide vanes needs to be controlled through the opening degree of the bypass valve, and the operation signals of an engine or the turbocharger do not need to be specially collected, and the control method is simple and reliable.

Description

Technical Field

[0001] This invention relates to the field of turbocharger technology, and in particular to a turbocharger based on the linkage between the inlet guide vane and the bypass valve. Background Technology

[0002] Turbochargers cleverly utilize the high-temperature exhaust gases from internal combustion engines to drive a turbine inside the turbine housing, which in turn drives a coaxial compressor impeller to rotate at high speed. This enables the intake and compression of fresh air, significantly increasing the intake pressure, density, and mass of the internal combustion engine, effectively improving power and torque, while reducing fuel consumption and harmful pollutant emissions.

[0003] In existing technologies, rotatable guide vanes are installed at the compressor inlet to change the circumferential angle of air entering the compressor, thereby adjusting the compressor's flow rate and pressure ratio to meet the needs of different turbocharger operating conditions. A bypass passage is installed inside the turbine housing, and a bypass valve is installed at the outlet to release some exhaust gas under high-speed, high-power conditions with large exhaust gas flow, preventing turbocharger overspeed. However, a common problem is that the control of the compressor inlet guide vanes and the turbine bypass valve is independent. The bypass valve opening is adjusted only based on the compressor boost pressure; while the adjustment of the inlet guide vane angle is based on multiple signals such as compressor air flow rate and turbocharger speed, the coordination of control is poor.

[0004] Specifically, patent documents such as CN101929381B control the angle of the inlet guide vanes based on compressor inlet flow signals and turbocharger speed signals; CN110691900B controls the guide vane angle by detecting "load increase transient events"; and CN119102869A monitors multiple engine performance parameters to control the guide vane angle. These existing technologies not only require dedicated acquisition of engine or turbocharger operating signals, increasing system complexity and cost, but also employ relatively cumbersome control methods, making it difficult to ensure the compressor operates continuously and stably in its high-efficiency range, thus failing to fully leverage the performance advantages of the turbocharger. Summary of the Invention

[0005] The purpose of this invention is to provide a turbocharger based on the linkage between the inlet guide vane and the bypass valve, so as to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A turbocharger based on the linkage between the inlet guide vane and the bypass valve, comprising: A compressor has an inlet cylinder at its air inlet. Inside the inlet cylinder is a set of guide vanes that rotate relative to the compressor. These guide vanes guide the airflow direction. Outside the inlet cylinder is a linkage ring for driving the guide vanes to rotate. A turbine is located on one side of the compressor. A turbine is installed in the main flow channel between the exhaust gas inlet and the exhaust gas outlet. A bypass flow channel is also provided between the exhaust gas inlet and the exhaust gas outlet. A bypass valve is provided at the bypass outlet of the bypass flow channel leading to the exhaust gas outlet. The bypass valve is hinged to the turbine via a rocker arm. A bypass actuator is provided on the outside of the turbine. The bypass actuator is hinged to the end of the rocker arm away from the bypass valve via a bypass telescopic rod. When the bypass actuator drives the bypass valve to open, the linkage ring can drive the guide vane to move in conjunction with the bypass valve, so as to control the rotation angle of the guide vane by the opening degree of the bypass valve.

[0007] In one possible implementation, the turbocharger based on the linkage between the inlet guide vane and the bypass valve further includes a linkage; the outer circle of the linkage ring has an extended handle; the two ends of the linkage are respectively hinged to the end of the extended handle and the bypass telescopic rod. When the bypass actuator drives the bypass valve to open via the bypass telescopic rod, the linkage drives the linkage ring to rotate, and the linkage ring drives the guide vane to move in conjunction with the bypass valve, so as to control the rotation angle of the guide vane by the opening degree of the bypass valve.

[0008] In one possible implementation, the end of the protruding handle has a linkage ball head, and the bypass telescopic rod is provided with a bypass rod ball head; The linkage ring is hinged to the linkage ring head and the bypass rod head through ball sockets at both ends.

[0009] In one possible implementation, the annular wall of the inlet cylinder has a plurality of evenly spaced guide vane holes, each guide vane hole corresponding to a journal of the guide vane, enabling the guide vane to rotate relative to the compressor; the annular wall of the linkage ring has a plurality of evenly spaced linkage grooves on the side near the journal, each linkage groove corresponding to a journal; the journal extends from the guide vane hole and is movably connected to the linkage groove through a guide vane ball head; When the linkage ring rotates, the linkage groove drives the journal to rotate within the guide vane hole through the guide vane ball head, thereby causing the guide vane to rotate.

[0010] In one possible implementation, the guide vane ball head is offset from the central axis of the journal.

[0011] In one possible implementation, the bypass telescopic rod is parallel to the central axis of the linkage ring.

[0012] In one possible implementation, the bypass actuator is mounted on the turbine housing via a bracket.

[0013] In one possible implementation, the bypass actuator includes at least a pneumatic telescopic actuator or an electric telescopic actuator.

[0014] The beneficial effects of the technical solution provided by this invention include at least the following: This technical solution provides a turbocharger based on the linkage between the inlet guide vanes and the bypass valve. During operation, the opening degree of the bypass valve can be used to control the rotation angle of the compressor inlet guide vanes in real time according to the operating conditions, thereby changing the circumferential angle of air entering the compressor and keeping the compressor operating in its high-efficiency range as much as possible. Furthermore, the overall structure of this turbocharger is simple, easy to implement, and low in cost. It only requires controlling the guide vane angle through the bypass valve opening, without the need to specifically collect operating signals from the engine or turbocharger, making the control method simple and reliable. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0016] Figure 1 This diagram illustrates the internal structure of a turbocharger based on the linkage between the inlet guide vane and the bypass valve, provided by an exemplary embodiment of the present invention.

[0017] Figure 2 A schematic diagram of the shaft side structure of a turbocharger based on the linkage between the inlet guide vane and the bypass valve, provided by an exemplary embodiment of the present invention, is shown.

[0018] Figure 3 The diagram shows a schematic of the structure of the guide vane and linkage ring of a turbocharger based on the linkage between the inlet guide vane and the bypass valve, provided by an exemplary embodiment of the present invention.

[0019] In the diagram: 1. Compressor; 2. Turbine; 3. Exhaust gas inlet; 4. Bypass channel; 5. Bypass outlet; 6. Bypass actuator; 7. Bypass telescopic rod; 8. Exhaust gas outlet; 9. Rocker arm; 10. Bypass valve; 11. Turbine; 12. Extended handle; 13. Ball socket; 14. Linkage ring; 15. Guide vane; 16. Air inlet; 17. Linkage device; 18. Bypass rod ball head; 19. Inlet cylinder; 20. Guide vane ball head; 21. Linkage ring head; 22. Guide vane hole; 23. Journal; 24. Linkage groove; 25. Support. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In this specification, identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions towards or away from a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "multiple" means two or more.

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This diagram illustrates the internal structure of a turbocharger based on the linkage between the inlet guide vane and the bypass valve, according to an exemplary embodiment of the present invention. Figure 2 This diagram illustrates a shaft side view of a turbocharger based on the linkage between inlet guide vanes and a bypass valve, provided by an exemplary embodiment of the present invention. The turbocharger includes: a compressor 1 with an inlet cylinder 19 at its air inlet 16; a set of guide vanes 15 rotating relative to the compressor 1 on the inner side of the inlet cylinder 19, the guide vanes 15 guiding the airflow direction; and a linkage ring 14 for driving the guide vanes 15 to rotate on the outer side of the inlet cylinder 19; and a turbine 2 located on one side of the compressor 1, with a turbine housing a main duct between its exhaust gas inlet 3 and exhaust gas outlet 8. A bypass channel 4 is provided between the turbine 11, the exhaust gas inlet 3 and the exhaust gas outlet 8. A bypass valve 10 is provided at the bypass outlet 5 of the bypass channel 4 leading to the exhaust gas outlet 8. The bypass valve 10 is hinged to the turbine 2 by a rocker arm 9. A bypass actuator 6 is provided on the outside of the turbine 2. The bypass actuator 6 is hinged to the end of the rocker arm 9 away from the bypass valve 10 by a bypass telescopic rod 7. When the bypass actuator 6 drives the bypass valve 10 to open, the linkage ring 14 can drive the guide vane 15 to move in linkage with the bypass valve 10, so as to control the rotation angle of the guide vane 15 by the opening degree of the bypass valve 10.

[0024] In this embodiment, the opening degree of the bypass valve 10 is directly converted into the rotation angle of the guide vane 15, forming a linkage mechanism of actuator action - bypass valve opening - linkage ring transmission - guide vane angle adjustment. This adjusts the circumferential angle of air entering the compressor 1, ensuring that the compressor 1 can operate efficiently under different operating conditions. Furthermore, this design achieves linkage adjustment solely through mechanical structure, eliminating the need for additional sensors or complex electronic control systems, thus offering advantages such as simple structure, low cost, and high control reliability.

[0025] In one possible implementation, Figure 2 A schematic diagram of the shaft side structure of a turbocharger based on the linkage between the inlet guide vane and the bypass valve provided in an exemplary embodiment of the present invention is shown. The turbocharger based on the linkage between the inlet guide vane and the bypass valve also includes a linkage 17; the outer circle of the linkage ring 14 has an extended handle 12; the two ends of the linkage 17 are respectively hinged to the end of the extended handle 12 and the bypass telescopic rod 7; wherein, when the bypass actuator 6 drives the bypass valve 10 to open through the bypass telescopic rod 7, the linkage 17 drives the linkage ring 14 to rotate, and the linkage ring 14 drives the guide vane 15 to be linked with the bypass valve 10, so as to control the rotation angle of the guide vane 15 by the opening degree of the bypass valve 10.

[0026] In this embodiment, when the bypass actuator 6 drives the bypass telescopic rod 7, the bypass telescopic rod 7 pulls or pushes the linkage 17. Since the two ends of the linkage 17 are respectively hinged to the end of the extended handle 12 and the bypass telescopic rod 7, its swing will drive the linkage ring 14 to rotate. The extended handle 12 on the outer circle of the linkage ring 14 serves as the force transmission fulcrum, converting the mechanical motion of the linkage 17 into the rotation of the linkage ring 14, thereby driving the inner guide vane 15 to rotate. In this case, by utilizing the hinged structure of the linkage 17, the opening change of the bypass valve 10 is linearly transmitted to the guide vane 15, so that the rotation angle of the guide vane 15 and the opening degree of the bypass valve 10 form a precise mechanical linkage. Only through the coordinated action of mechanical components such as the linkage 17, linkage ring 14, and extended handle 12, the guide vane angle can be adjusted in real time according to the opening degree of the bypass valve, ensuring that the compressor 1 is always in the high-efficiency operating range, and combining the advantages of structural simplification and reliable control.

[0027] Furthermore, Figure 2 The diagram shows a schematic of the shaft side structure of a turbocharger based on the linkage of an inlet guide vane and a bypass valve provided in an exemplary embodiment of the present invention. The end of the protruding shank 12 has a linkage ring head 21, and the bypass telescopic rod 7 is provided with a bypass rod ball head 18. The linkage ring 14 is hinged to the linkage ring head 21 and the bypass rod ball head 18 through the ball sockets 13 at both ends of the ring.

[0028] In this embodiment, the linkage ring head 21 and the bypass rod ball head 18 are respectively embedded in the ball sockets 13 at both ends of the linkage ring 14, forming universal joint points. When the bypass telescopic rod 7 is activated, the ball head rotates in the ball socket, driving the linkage ring 14 to rotate, achieving seamless mechanical linkage, ensuring that the guide vane 15 is precisely adjusted with the opening degree of the bypass valve 10, and improving the reliability and flexibility of the transmission.

[0029] In one possible implementation, Figure 2 This diagram illustrates a shaftside structure of a turbocharger based on the linkage between the inlet guide vane and the bypass valve, according to an exemplary embodiment of the present invention. Figure 3 This diagram illustrates the structure of a turbocharger based on the linkage between an inlet guide vane and a bypass valve, according to an exemplary embodiment of the present invention. The inlet cylinder 19 has multiple evenly spaced guide vane holes 22 on its annular wall. Each guide vane hole 22 corresponds to and is fitted with a journal 23 of a guide vane 15, allowing the guide vane 15 to rotate relative to the compressor 1. The linkage ring 14 has multiple evenly spaced linkage grooves 24 on its annular wall near the journal 23. Each linkage groove 24 corresponds to and is fitted with a journal 23. The journal 23 extends from the guide vane hole 22 and is movably connected to the linkage groove 24 via a guide vane ball head 20. When the linkage ring 14 rotates, the linkage groove 24 drives the journal 23 to rotate within the guide vane hole 22 via the guide vane ball head 20, thereby causing the guide vane 15 to rotate.

[0030] In this embodiment, the guide vane hole 22 of the inlet cylinder 19 provides a rotation fulcrum for the journal 23 of the guide vane 15. After the journal 23 extends, it is movably connected to the linkage groove 24 of the linkage ring 14 through the guide vane ball head 20. When the linkage ring 14 rotates, the inner wall of the linkage groove 24 pushes the guide vane ball head 20, causing the journal 23 to rotate within the guide vane hole 22, thereby causing the guide vane 15 to rotate synchronously. In this case, the flexible rotation of the guide vane 15 is achieved by utilizing the matching structure between the guide vane hole 22 and the journal 23. Through the movable connection between the guide vane ball head 20 and the linkage groove 24, the rotational motion of the linkage ring 14 is accurately transmitted to the guide vane 15. The evenly distributed guide vane holes 22 and linkage grooves 24 ensure balanced force transmission, making the rotation of the guide vane 15 more stable, thereby adjusting the airflow guidance angle in real time according to the bypass valve opening and ensuring the intake efficiency of the compressor 1.

[0031] It is worth mentioning that the guide vane ball head 20 is offset from the central axis of the journal 23. The bypass telescopic rod 7 is parallel to the central axis of the linkage ring 14.

[0032] In this embodiment, the guide vane ball head 20 is offset from the central axis of the journal 23, forming an eccentric structure, so that the guide vane ball head 20 can drive the journal 23 to rotate when the linkage ring 14 rotates. The bypass telescopic rod 7 is parallel to the central axis of the linkage ring 14, ensuring that the linkage ring 14 rotates evenly under force when the bypass telescopic rod 7 moves linearly. The two work together to achieve precise angle adjustment of the guide vane 15, improving transmission efficiency and stability.

[0033] In one possible implementation, see [reference] Figure 2 The bypass actuator 6 is mounted on the turbine housing 2 via a bracket 25. The bypass actuator 6 includes at least a pneumatic or electric telescopic actuator.

[0034] In this embodiment, the bypass actuator 6 is a pneumatic or electric telescopic actuator. The telescopic power is transmitted to the bypass telescopic rod 7 through the bracket 25, which drives the bypass valve 10 to operate and meet the adjustment requirements under different working conditions.

[0035] Next, the working principle of a turbocharger based on the linkage between the inlet guide vane and the bypass valve involved in the embodiments of the present invention will be explained.

[0036] First, the high-temperature exhaust gas from the engine enters through the exhaust gas inlet 3 of the turbine 2. Part of it drives the turbine 11 to rotate through the main flow channel, and the other part flows to the bypass outlet 5 through the bypass flow channel 4. When the actual operating condition reaches the point where the bypass valve 10 opens, the bypass actuator 6 begins to perform the extension and retraction action.

[0037] Secondly, the bypass actuator 6 pushes the bypass telescopic rod 7 to move axially, causing the rocker arm 9 to rotate around the hinge point, thereby driving the bypass valve 10 to open the bypass flow channel 4. At this time, the linear motion of the bypass telescopic rod 7 is transmitted to the linkage ring 14 through the bypass rod ball head 18. Since the bypass rod ball head 18 is hinged to the ball sockets 13 at both ends of the linkage ring 14, and the bypass telescopic rod 7 is parallel to the central axis of the linkage ring 14, the telescopic force is converted into the rotational torque of the linkage ring 14.

[0038] Next, the extended handle 12 of the outer circle of the linkage ring 14 is hinged to the linkage 17 through the linkage ring head 21. When the linkage ring 14 rotates, the linkage 17 pulls the extended handle 12, causing the linkage groove 24 on the inner side of the linkage ring 14 to rotate synchronously. The inner wall of the linkage groove 24 pushes the guide vane ball head 20, causing the journal 23 of the guide vane 15 to rotate in the guide vane hole 22 of the inlet cylinder 19. Since the guide vane hole 22 and the journal 23 are evenly matched, multiple guide vanes 15 deflect synchronously, changing the circumferential angle of air entering the compressor 1.

[0039] Finally, the rotation angle of the guide vane 15 changes in real time with the opening of the bypass valve 10. The larger the opening of the bypass valve 10, the larger the rotation angle of the linkage ring 14, the larger the deflection angle of the guide vane 15, and the airflow guidance angle is adjusted accordingly to ensure that the compressor 1 is in the high-efficiency range under different operating conditions. By utilizing the direct mapping between the bypass valve opening and the guide vane angle, an adaptive adjustment closed loop is formed.

[0040] In summary, the turbocharger based on the linkage between the inlet guide vanes and the bypass valve provided by this technical solution can control the angle of the compressor inlet guide vanes in real time according to the operating conditions by adjusting the opening degree of the bypass valve. This changes the circumferential angle of air entering the compressor, thus keeping the compressor operating in its high-efficiency range as much as possible. Furthermore, the overall structure of this turbocharger is simple, easy to implement, and low in cost. It only requires controlling the guide vane angle through the bypass valve opening, eliminating the need for dedicated acquisition of engine or turbocharger operating signals, making the control method simple and reliable.

[0041] In the embodiments disclosed in this invention, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this invention according to the specific circumstances.

[0042] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A turbocharger based on the linkage between the inlet guide vane and the bypass valve, characterized in that, include: A compressor (1) has an inlet cylinder (19) at its air inlet (16). Inside the inlet cylinder (19) is a set of guide vanes (15) that rotate relative to the compressor (1). The guide vanes (15) guide the airflow direction. Outside the inlet cylinder (19) is a linkage ring (14) for driving the guide vanes (15) to rotate. A turbine (2) is located on one side of the compressor (1). A turbine (11) is installed in the main channel between the exhaust gas inlet (3) and the exhaust gas outlet (8). A bypass channel (4) is also provided between the exhaust gas inlet (3) and the exhaust gas outlet (8). A bypass valve (10) capable of opening and closing the bypass channel (4) is provided at the bypass outlet (5) of the bypass channel (4) leading to the exhaust gas outlet (8). The bypass valve (10) is hinged to the turbine (2) by a rocker arm (9). A bypass actuator (6) is provided on the outside of the turbine (2). The bypass actuator (6) is hinged to the rocker arm (9) away from the bypass valve (10) by a bypass telescopic rod (7). When the bypass actuator (6) drives the bypass valve (10) to open, the linkage ring (14) can drive the guide vane (15) to link with the bypass valve (10) so as to control the rotation angle of the guide vane (15) by the opening degree of the bypass valve (10). The turbocharger based on the linkage between the inlet guide vane and the bypass valve also includes a linkage (17); the outer circle of the linkage ring (14) has an extended handle (12); the two ends of the linkage (17) are respectively hinged to the end of the extended handle (12) and the bypass telescopic rod (7); When the bypass actuator (6) drives the bypass valve (10) to open via the bypass telescopic rod (7), the linkage (17) drives the linkage ring (14) to rotate, and the linkage ring (14) drives the guide vane (15) to be linked with the bypass valve (10) so as to control the rotation angle of the guide vane (15) by the opening degree of the bypass valve (10).

2. The turbocharger based on the linkage between the inlet guide vane and the bypass valve according to claim 1, characterized in that, The end of the extended handle (12) has a linkage ring head (21), and the bypass telescopic rod (7) is provided with a bypass rod ball head (18). The linkage ring (14) is hinged to the linkage ring head (21) and the bypass rod head (18) respectively through the ball sockets (13) at both ends.

3. The turbocharger based on the linkage between the inlet guide vane and the bypass valve according to claim 1, characterized in that, The inlet cylinder (19) has a plurality of uniformly spaced guide vane holes (22) on its annular wall. Each guide vane hole (22) is adapted to a journal (23) of a guide vane (15), so that the guide vane (15) can rotate relative to the compressor (1). The linkage ring (14) has a plurality of uniformly spaced linkage grooves (24) on its annular wall near the journal (23). Each linkage groove (24) is adapted to a journal (23). The journal (23) extends out from the guide vane hole (22) and is movably connected to the linkage groove (24) through the guide vane ball head (20). When the linkage ring (14) rotates, the linkage groove (24) drives the journal (23) to rotate in the guide vane hole (22) through the guide vane ball head (20), so that the guide vane (15) rotates.

4. The turbocharger based on the linkage between the inlet guide vane and the bypass valve according to claim 3, characterized in that, The guide vane ball head (20) is offset from the central axis of the journal (23).

5. The turbocharger based on the linkage between the inlet guide vane and the bypass valve according to claim 1, characterized in that, The bypass telescopic rod (7) is parallel to the central axis of the linkage ring (14).

6. The turbocharger based on the linkage between the inlet guide vane and the bypass valve according to claim 1, characterized in that, The bypass actuator (6) is mounted on the turbine (2) housing via a bracket (25).

7. The turbocharger based on the linkage between the inlet guide vane and the bypass valve according to claim 1, characterized in that, The bypass actuator (6) includes at least a pneumatic telescopic actuator or an electric telescopic actuator.

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