Flow regulating valve, control method thereof and double-flow-channel turbocharger

Abstract

The invention relates to a flow regulating valve and a control method thereof and a double-runner turbocharger, the flow regulating valve comprises a valve body, a valve plate and a driving device, a valve cavity is formed in the valve body, a first flow guide channel and a second flow guide channel are formed in the valve cavity, the valve plate is rotatably arranged in the valve cavity within a preset angle range, and the first flow guide channel is communicated with the second flow guide channel. The driving device is arranged outside the valve body and is in transmission connection with the valve plate, the driving device is used for driving the valve plate to rotate between a first flow guide position and a second flow guide position relative to the valve body, and when the valve plate is located at the first flow guide position, the first flow guide channel is cut off, and when the valve plate is located at the second flow guide position, the second flow guide channel is cut off; when the valve plate is located at the first flow guide position, the second flow guide channel is conducted, and when the valve plate is located at the second flow guide position, the first flow guide channel and the second flow guide channel are conducted.

Description

Technical Field

[0001] The present invention relates to the technical field of engines, and particularly relates to a flow regulating valve, a control method thereof, and a dual-flow turbocharger. Background Art

[0002] With the increasing average effective pressure of marine diesel engines, how to improve the low-speed performance of diesel engines has become one of the key factors in diesel engine development. In addition to measures such as valve timing optimization and air charging, compared with single-flow turbochargers, selecting a suitable dual-flow turbocharger can make more full use of exhaust energy, thereby improving its low-speed performance. Due to the split of its volute into two parts, the dual-flow turbocharger is similar to being equipped with a smaller volute, which accelerates the exhaust gas entering the volute under low-speed conditions and further weakens the influence of exhaust interference of each cylinder, thereby improving the utilization efficiency of exhaust gas energy under low-speed conditions and having better low-speed steady-state performance. At the same time, the volute flow passage area of the dual-flow turbocharger is small, and the exhaust pipe pressure rises faster when the main engine suddenly accelerates at low speed, and the turbine power increases relatively fast, making the boost pressure rise faster, thereby improving the transient sudden acceleration performance. Due to its small flow passage area, the dual-flow turbocharger has greater exhaust resistance and higher pumping losses under high-speed and high-load conditions, sacrificing a certain amount of economy. Summary of the Invention

[0003] The first object of the present invention is to provide a flow regulating valve to efficiently utilize exhaust gas energy at small flow rates, effectively increase the speed of the turbocharger, and improve the utilization efficiency of the turbocharger.

[0004] The second object of the present invention is to provide a control method based on the above flow regulating valve and a dual-flow turbocharger.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A flow regulating valve, the flow regulating valve includes:

[0007] A valve body, a valve cavity is arranged in the valve body, and a first diversion channel and a second diversion channel are formed in the valve cavity;

[0008] A valve plate, the valve plate is rotatably arranged in the valve cavity within a preset angle range to adjust the flow cross-sectional areas of the first diversion channel and the second diversion channel;

[0009] A driving device, the driving device is arranged outside the valve body and is in transmission connection with the valve plate, the driving device is used to drive the valve plate to rotate relative to the valve body between a first diversion position and a second diversion position. When the valve plate is in the first diversion position, the first diversion channel is cut off and the second diversion channel is conducted. When the valve plate is in the second diversion position, both the first diversion channel and the second diversion channel are conducted.

[0010] In an embodiment of the present application, an inlet and an outlet communicating with the valve cavity are provided at both ends of the valve body, and the valve plate always maintains an attitude of inclining from the end extending into the first diversion channel towards a direction away from the inlet, so as to guide all or part of the gas in the first diversion channel to the second diversion channel.

[0011] In an embodiment of the present application, when the valve plate rotates between the first diversion position and the second diversion position, the flow cross-sectional area of the first diversion channel is always not greater than the flow cross-sectional area of the second diversion channel;

[0012] During the rotation of the valve plate from the first diversion position to the second diversion position, the flow cross-sectional areas of both the first diversion channel and the second diversion channel gradually increase.

[0013] In an embodiment of the present application, the rotating shaft of the valve plate is located at a position in the first diversion channel close to the second diversion channel, and the valve plate is symmetric about the rotating shaft.

[0014] In an embodiment of the present application, the driving device includes:

[0015] A driving motor, which is installed outside the valve body through a heightening bracket;

[0016] A four-bar linkage mechanism, the driving end of the driving motor is connected to the input end of the four-bar linkage mechanism, and the output end of the four-bar linkage mechanism is connected to the rotating shaft of the valve plate.

[0017] A two-flow turbocharger includes:

[0018] A volute, an outer intake passage and an inner intake passage are arranged inside the volute, and the inner intake passage and the outer intake passage are arranged in sequence from near to far with respect to the axis of rotation of the volute;

[0019] A flow regulating valve, which is the flow regulating valve described in any one of the above, the outlet of the valve body of the flow regulating valve is connected to the volute, the first diversion channel is correspondingly communicated with the inner intake passage, and the second diversion channel is correspondingly communicated with the outer intake passage.

[0020] A control method for a flow regulating valve described in any one of the above, including the steps of:

[0021] 1) Obtain the working state of the engine, and adjust the position of the valve plate of the flow regulating valve according to the flow regulating valve control MAP diagram calibrated by tests for the obtained working state of the engine;

[0022] 2) Acquire valve plate position information and perform closed-loop control on the valve plate.

[0023] In one embodiment of the present application, before step 1), the method further includes:

[0024] When the engine is powered on but not started, the flow regulating valve performs a self-check to obtain the limit position of the valve plate of the flow regulating valve, and compares the obtained limit position information with the first flow guide position and the second flow guide position pre-stored in the control system. If the limit position information matches the pre-stored first flow guide position and the second flow guide position, the control system does not report an error and allows the engine to start. If the limit position information does not match the pre-stored first flow guide position and the second flow guide position, the flow regulating valve is controlled to perform self-cleaning until the limit position information matches the pre-stored first flow guide position and the second flow guide position.

[0025] In one embodiment of the present application, if the valve plate position cannot be adjusted after the valve plate position information is obtained in step 2), the output torque of the driving device of the flow regulating valve is increased to move the valve plate of the flow regulating valve to the second diversion position or close to the second diversion position, and the engine enters the limp home mode.

[0026] In one embodiment of the present application, the steps are further included:

[0027] 3) After the engine is shut down, the flow control valve performs self-cleaning and self-learning during the retention time window of the engine power-off. The self-learning includes obtaining the limit position of the valve plate and storing it in the control system.

[0028] It can be seen from the above technical scheme that the present invention discloses a flow control valve, and the design method includes a valve body, a valve plate and a driving device, wherein a valve cavity is arranged in the valve body, and a first guide channel and a second guide channel are formed in the valve cavity. The valve plate is rotatably arranged in the valve cavity within a preset angle range to adjust the flow cross-sectional area of ​​the first guide channel and the second guide channel. The driving device is arranged outside the valve body and is transmission-connected to the valve plate. The driving device is used to drive the valve plate to rotate relative to the valve body between a first guide position and a second guide position. When the valve plate is in the first guide position, the first guide channel is cut off and the second guide channel is connected. When the valve plate is in the second guide position, both the first guide channel and the second guide channel are connected.

[0029] During application, the valve plate of the above-mentioned flow regulating valve is in the first diversion position when the engine stops, the first diversion channel is closed, the flow regulating valve starts to open at idle speed, and as the speed and load increase, the opening of the flow regulating valve gradually increases, that is, it gradually moves towards the second diversion position. When a certain speed and load are reached, for example, 80% load, the flow regulating valve can be fully opened, that is, the valve plate is in the second diversion position. At this time, the exhaust gas flow is relatively large, which can promote the improvement of the efficiency of the turbocharger. Through the above-mentioned flow regulating valve, the exhaust gas energy can be efficiently utilized at low flow rates, effectively increasing the speed of the turbocharger and improving the utilization efficiency of the turbocharger. Brief Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0031] Figure 1 Structural schematic diagram of the flow regulating valve provided by the embodiment of the present invention;

[0032] Figure 2 Cross-sectional view of the flow regulating valve provided by the embodiment of the present invention;

[0033] Figure 3 Flowchart of the control method of the flow regulating valve provided by the first embodiment of the present invention;

[0034] Figure 4 Flowchart of the control method of the flow regulating valve provided by the second embodiment of the present invention;

[0035] Figure 5 Flowchart of the control method of the flow regulating valve provided by the third embodiment of the present invention.

[0036] In the figure:

[0037] 100 is the flow regulating valve; 110 is the valve body; 120 is the valve plate; 130 is the driving device; 131 is the driving motor; 132 is the first connecting rod; 133 is the second connecting rod; 134 is the third connecting rod; 140 is the rotating shaft; 150 is the rib plate; 100a is the first diversion channel; 100b is the second diversion channel; 100c is the inlet; 100d is the outlet. Detailed Embodiments

[0038] One of the cores of the present invention is to provide a flow regulating valve, and the structural design of this flow regulating valve can achieve efficient utilization of exhaust gas energy at low flow rates, effectively increasing the speed of the turbocharger and improving the utilization efficiency of the turbocharger.

[0039] Another core of the present invention is to provide a control method based on the above flow regulating valve and a dual-flow turbocharger.

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0041] Please refer to Figure 1 and Figure 2 , Figure 1 , which is a schematic structural diagram of the flow regulating valve provided by the embodiment of the present invention, Figure 2 , which is a sectional view of the flow regulating valve provided by the embodiment of the present invention.

[0042] A flow regulating valve 100 is disclosed in the embodiment of the present invention. The flow regulating valve 100 includes a valve body 110, a valve plate 120, and a driving device 130.

[0043] Among them, a valve cavity is provided in the valve body 110. A first flow guiding channel 100a and a second flow guiding channel 100b are formed in the valve cavity. The first flow guiding channel 100a and the second flow guiding channel 100b are communicated with each other. The valve plate 120 is rotatably disposed in the valve cavity within a preset angle range to adjust the flow cross-sectional areas of the first flow guiding channel 100a and the second flow guiding channel 100b. The driving device 130 is disposed outside the valve body 110 and is in transmission connection with the valve plate 120. The driving device 130 is used to drive the valve plate 120 to rotate relative to the valve body 110 between a first flow guiding position and a second flow guiding position. When the valve plate 120 is in the first flow guiding position, the first flow guiding channel 100a is truncated and the second flow guiding channel 100b is conducted. At this time, the flow cross-sectional area of the second flow guiding channel 100b is the smallest. When the valve plate 120 is in the second flow guiding position, both the first flow guiding channel 100a and the second flow guiding channel 100b are conducted, and at this time, the flow cross-sectional areas of both the first flow guiding channel 100a and the second flow guiding channel 100b are the largest.

[0044] Compared with the prior art, when the flow control valve 100 provided in the embodiment of the present invention is applied, the flow control valve 100 is connected to the intake end of the dual-flow turbocharger, so that the first diversion channel 100a of the flow control valve 100 is correspondingly communicated with the inner intake channel of the dual-flow turbocharger, and the second diversion channel 100b is correspondingly communicated with the outer intake channel of the dual-flow turbocharger. The valve plate 120 of the flow control valve 100 is in the first diversion position when the engine is stopped and just started. The first diversion channel 100a is closed, and all the intake air passes through the second diversion channel 100b and enters the outer intake channel of the dual-flow turbocharger, maximizing the kinetic energy of the exhaust gas and effectively increasing the exhaust gas driving torque.

[0045] The flow control valve 100 starts to open at idle speed. As the engine speed and load increase, the opening degree of the flow control valve 100 gradually increases, that is, it gradually moves towards the second diversion position. When a certain engine speed and load are reached, for example, 80% load, the flow control valve 100 can be fully opened, that is, the valve plate 120 is in the second diversion position. At this time, the exhaust gas flow is relatively large, which can promote the improvement of the efficiency of the turbocharger.

[0046] Through the above-mentioned flow control valve 100, the flow in the inner intake channel of the dual-flow turbocharger can be adjusted, and most of the gas flow is guided into the outer intake flow channel. When the valve plate 120 is fully closed, a suitable flow channel area can also be ensured to effectively increase the speed of the turbocharger at a certain engine speed and part load, rationally utilize the exhaust gas energy, realize the efficient utilization of the exhaust gas energy at a small flow rate, effectively increase the speed of the turbocharger, and improve the utilization efficiency of the turbocharger.

[0047] Preferably, in an embodiment of the present application, the two ends of the valve body 110 are provided with an inlet 100c and an outlet 100d that are communicated with the valve cavity. The inlet 100c is respectively communicated with the first diversion channel 100a and the second diversion channel 100b, and the outlet 100d is respectively communicated with the first diversion channel 100a and the second diversion channel 100b. The valve plate 120 always maintains an attitude of tilting away from the inlet 100c starting from the end extending into the first diversion channel 100a, so as to guide all or part of the gas in the first diversion channel 100a to the second diversion channel 100b.

[0048] For the convenience of matching installation with the dual-flow turbocharger and the dual intake pipes, in an embodiment of the present application, as Figure 1 and Figure 2As shown, rib plates 150 are respectively arranged at the inlet 100c and the outlet 100d. The rib plate 150 divides the inlet 100c into a first inlet and a second inlet, and the rib plate 150 divides the outlet 100d into a first outlet and a second outlet. The first inlet and the first outlet are respectively communicated with the first diversion channel 100a, and the second inlet and the second outlet are respectively communicated with the second diversion channel 100b.

[0049] To further optimize the above technical solution, since in the actual application process, the inner intake channel of the two - flow turbocharger is correspondingly communicated with the first diversion channel 100a, and the outer intake channel of the two - flow turbocharger is correspondingly communicated with the second diversion channel 100b. Therefore, in order to ensure that more intake air enters from the outer intake channel of the two - flow turbocharger, in an embodiment of the present application, when the valve plate 120 rotates between the first diversion position and the second diversion position, the flow - through cross - sectional area of the first diversion channel 100a is always not greater than that of the second diversion channel 100b, so that more intake air enters from the outer intake channel of the two - flow turbocharger.

[0050] During the process of the valve plate 120 rotating from the first diversion position to the second diversion position, the flow - through cross - sectional areas of both the first diversion channel 100a and the second diversion channel 100b gradually increase.

[0051] The rotation axis of the valve plate 120 is located at a position in the first diversion channel 100a close to the second diversion channel 100b. The valve plate 120 is symmetric about the rotation axis. In this way, it can be ensured that when the flow regulating valve 100 is in the fully - closed position, the flow regulating valve 100 has a sufficient flow - through cross - sectional area to ensure the normal operation of the turbocharger and the engine.

[0052] As Figure 1 and Figure 2 shown, in an embodiment of the present application, before the valve plate 120 reaches the second diversion position, the first diversion channel 100a and the second diversion channel 100b always remain connected on the side of the valve plate 120 facing the inlet 100c. When the valve plate 120 reaches the second diversion position, the edge of the valve plate 120 contacts the rib plate 150 at the inlet 100c, and the first diversion channel 100a and the second diversion channel 100b are separated on the side of the valve plate 120 facing the inlet 100c.

[0053] Preferably, a limiting structure is arranged in the valve cavity. The limiting structure is used to contact and cooperate with one end of the valve plate 120 extending into the second diversion channel 100b when the valve plate 120 is in the second diversion position to maintain the stability of the valve plate 120. The limiting structure can be the rib plate 150 or be set separately according to the rotation angle of the valve plate 120, and no limitation is made here.

[0054] As Figure 1As shown in the figure, the driving device 130 includes a driving motor 131 and a four-bar linkage mechanism. The driving motor 131 is installed on the outside of the valve body 110 through a heightening bracket. The driving end of the driving motor 131 is connected to the input end of the four-bar linkage mechanism. The output end of the four-bar linkage mechanism is connected to the rotating shaft of the valve plate 120. The four-bar linkage mechanism includes a first connecting rod 132, a second connecting rod 133 and a third connecting rod 134. Among them, the first end of the first connecting rod 132 is connected to the driving end of the driving motor 131, the second end of the first connecting rod 132 is rotatably connected to the first end of the second connecting rod 133, the second end of the second connecting rod 133 is rotatably connected to the first end of the third connecting rod 134, and the second end of the third connecting rod 134 is fixedly connected to the rotating shaft 140. When the driving motor 131 drives the first connecting rod 132 to swing, the first connecting rod 132 drives the third connecting rod 134 through the second connecting rod 133, and the third connecting rod 134 drives the valve plate 120 to rotate through the rotating shaft 140.

[0055] The present application also provides a two-flow turbocharger, which includes a volute and a flow regulating valve 100. Among them, an outer intake passage and an inner intake passage are provided inside the volute. The inner intake passage and the outer intake passage are arranged in sequence from near to far relative to the axis of rotation of the volute. The flow regulating valve 100 is the flow regulating valve 100 described in the above embodiment. The outlet 100d of the valve body 110 of the flow regulating valve 100 is connected to the volute. The first diversion passage 100a is correspondingly communicated with the inner intake passage, and the second diversion passage 100b is correspondingly communicated with the outer intake passage. Since the two-flow turbocharger adopts the flow regulating valve 100 in the above embodiment, the technical effects of the two-flow turbocharger can be referred to the above embodiment.

[0056] Please refer to Figure 3 , an embodiment of the present application also provides a control method for the flow regulating valve 100 as described in the above embodiment, including the steps of:

[0057] 1) Obtain the working state of the engine, and adjust the position of the valve plate 120 of the flow regulating valve 100 according to the control MAP of the flow regulating valve 100 calibrated by the test for the obtained working state of the engine;

[0058] If the engine is at idle speed, the control valve can be in a closed state. At this time, the inner channel is basically in a fully closed state, while the outer channel still ensures smooth gas flow. All the low-flow exhaust gas of the engine enters the outer channel, which can increase the energy of the exhaust gas impacting the turbocharger turbine, increase the turbocharger speed, and thus improve the efficiency of the turbocharger. At low engine speeds and small loads, the regulating valve opens at a certain angle to direct most of the exhaust gas into the outer channel and a small part of the gas into the inner channel, taking into account the air flow distribution between the inner and outer sides. As the engine speed increases and the load increases, the opening of the regulating valve gradually increases to ensure the air flow distribution between the inner and outer sides and ensure that the turbocharger can obtain the best driving energy.

[0059] 2) Obtain the position information of the valve plate 120 and perform closed-loop control on the valve plate 120.

[0060] When in a steady state, the position of the valve plate 120 of the regulating valve is required to be maintained at a certain position. This requires the control valve to achieve closed-loop control. The control motor or other driving facilities are required to have a position sensor that can feedback the opening of the valve plate 120. After the position is fed back to the control system for calculation, a micro-adjustment of the relative position of the valve plate 120 is performed to ensure that a stable state can be achieved.

[0061] Please refer to Figure 4 , in the second embodiment provided in the embodiments of the present application, before step 1), it further includes:

[0062] When the engine is powered on but not started, the flow regulating valve 100 performs self-check to detect the state of the flow regulating valve 100.

[0063] The self-check process includes obtaining the limit positions of the valve plate 120 of the flow regulating valve 100 and comparing the obtained limit position information with the first diversion position and the second diversion position pre-stored in the control system. If the limit position information matches the pre-stored first diversion position and the second diversion position, the control system does not report an error and allows the engine to start. If the limit position information does not match the pre-stored first diversion position and the second diversion position, the flow regulating valve 100 is controlled to perform self-cleaning until the limit position information matches the pre-stored first diversion position and the second diversion position.

[0064] In the above control method, controlling the flow regulating valve 100 to perform self-cleaning includes:

[0065] At least one of making the valve plate 120 of the flow regulating valve 100 rotate a preset number of times repeatedly, increasing the rotation speed of the valve plate 120 of the flow regulating valve 100, and increasing the output torque of the driving device 130 of the flow regulating valve 100.

[0066] By repeatedly rotating the valve disc 120 of the flow control valve 100, the repeated rotation of the valve disc 120 will shake off the impurity particles causing jamming, or the rotation and seating speed of the valve disc 120 can be increased, and the seating buffer measure of the valve disc 120 can be inhibited. Through the vibration generated by the seating of the valve disc 120, the impurity particles are shaken off. Of course, the impurity particles hindering the valve disc 120 can also be scraped off by increasing the output torque of the driving device 130 of the flow control valve 100.

[0067] If the position of the valve disc 120 cannot be adjusted after obtaining the position information of the valve disc 120 in step 2), the output torque of the driving device 130 of the flow control valve 100 is increased to move the valve disc 120 of the flow control valve 100 to the second diversion position or close to the second diversion position, and the engine enters the limp home mode.

[0068] Please refer to Figure 5 , in the third embodiment provided by the embodiment of the present application, the above control method further includes the steps:

[0069] 3) After the engine stops, within the retention time window of the engine power-off, the flow control valve 100 performs self-cleaning and self-learning. The self-cleaning shakes off the impurities and particles adhering to the valve disc 120 and the shaft. The self-learning includes obtaining the current limit position of the valve disc 120 and storing it in the control system for comparison during the next engine start self-check.

[0070] As shown in the present application and the claims, unless the context clearly indicates an exception, words such as "a", "one", "a kind of" and / or "the" are not specifically singular and may also include plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. An element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, commodity or device including the element.

[0071] In the description of the present application, unless otherwise clearly defined, words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present application in combination with the specific content of the technical solution.

[0072] It should be noted that the embodiments in this specification are all described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0073] In this article, specific examples are used to illustrate the principles and implementation modes of the present invention. The description of the above embodiments is only used to help understand the core idea of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A flow regulating valve, characterized in that, The flow regulating valve (100) comprises: A valve body (110), wherein a valve cavity is arranged in the valve body (110), and a first flow guiding channel (100a) and a second flow guiding channel (100b) are formed in the valve cavity; a valve plate (120), the valve plate (120) being rotatably disposed in the valve cavity within a preset angle range so as to adjust the flow cross-sectional areas of the first flow guide channel (100a) and the second flow guide channel (100b); A driving device (130), the driving device (130) being arranged outside the valve body (110) and being transmission-connected to the valve plate (120), the driving device (130) being used to drive the valve plate (120) to rotate relative to the valve body (110) between a first flow guiding position and a second flow guiding position; when the valve plate (120) is in the first flow guiding position, the first flow guiding channel (100a) is cut off and the second flow guiding channel (100b) is connected; when the valve plate (120) is in the second flow guiding position, both the first flow guiding channel (100a) and the second flow guiding channel (100b) are connected.

2. The flow control valve according to claim 1, characterized in that, An inlet (100c) and an outlet (100d) communicating with the valve cavity are provided at both ends of the valve body (110), and the valve plate (120) always maintains a posture of being inclined from the end extending into the first flow guide channel (100a) in a direction away from the inlet (100c), so as to guide all or part of the gas in the first flow guide channel (100a) to the second flow guide channel (100b).

3. The flow control valve according to claim 2, wherein When the valve plate (120) rotates between the first flow guiding position and the second flow guiding position, the flow cross-sectional area of ​​the first flow guiding channel (100a) is always no greater than the flow cross-sectional area of ​​the second flow guiding channel (100b); During the process of the valve plate (120) rotating from the first flow guiding position to the second flow guiding position, the flow cross-sectional area of ​​the first flow guiding channel (100a) and the flow cross-sectional area of ​​the second flow guiding channel (100b) both gradually increase.

4. The flow control valve according to claim 2 or 3, characterized in that, The rotation axis of the valve plate (120) is located in the first flow guiding channel (100a) at a position close to the second flow guiding channel (100b), and the valve plate (120) is symmetrical about the rotation axis.

5. The flow control valve according to any one of claims 1-4, characterized in that, The driving device (130) comprises: a drive motor, the drive motor being mounted on the outside of the valve body (110) via a height-raising bracket; A four-bar linkage transmission mechanism, wherein the driving end of the driving motor is connected to the input end of the four-bar linkage transmission mechanism, and the output end of the four-bar linkage transmission mechanism is connected to the rotating shaft of the valve plate (120).

6. A two-flow turbocharger, characterized in that, include: A volute, wherein an outer air inlet passage and an inner air inlet passage are arranged inside the volute, and the inner air inlet passage and the outer air inlet passage are arranged in sequence from near to far relative to the rotation axis of the volute; Flow control valve (100), the flow control valve (100) being the flow control valve (100) according to any one of claims 1-5, the outlet (100d) of the valve body (110) of the flow control valve (100) being connected to the volute, the first diversion channel (100a) corresponding to and communicating with the inner air intake channel, and the second diversion channel (100b) corresponding to and communicating with the outer air intake channel.

7. A control method for a flow regulating valve according to any one of claims 1-5, characterized in that, Including the steps of: 1) Obtain the engine operating state, and adjust the position of the valve disc (120) of the flow control valve (100) according to the flow control valve control MAP diagram calibrated by tests for the obtained engine operating state; 2) Obtain the position information of the valve disc (120) and perform closed-loop control on the valve disc (120).

8. The control method according to claim 7, characterized in that, Before the step 1), it further includes: When the engine is powered on but not started, the flow control valve (100) performs self-check, obtains the limit position of the valve disc (120) of the flow control valve (100), and compares the obtained limit position information with the first diversion position and the second diversion position pre-stored in the control system. If the limit position information is consistent with the pre-stored first diversion position and the second diversion position, the control system does not report an error and allows the engine to start. If the limit position information is not consistent with the pre-stored first diversion position and the second diversion position, control the flow control valve (100) to perform self-cleaning until the limit position information is consistent with the pre-stored first diversion position and the second diversion position.

9. The control method according to claim 7, characterized in that, If the position of the valve disc (120) cannot be adjusted after obtaining the position information of the valve disc (120) in the step 2), increase the output torque of the driving device (130) of the flow control valve (100) to move the valve disc (120) of the flow control valve (100) to the second diversion position or close to the second diversion position, and the engine enters the limp-home mode.

10. The control method according to any one of claims 7-9, characterized in that, It further includes the steps of: 3) After the engine stops, within the dwell time window when the engine is powered off, the flow control valve (100) performs self-cleaning and self-learning. The self-learning includes obtaining the limit position of the valve disc (120) and storing it in the control system.

Images